Merge branch 'kinetic-animations' of git@scm.dev.nokia.troll.no:qt/kinetic into kinetic-animations

52 files changed, 1100 insertions, 720 deletions

diff --git a/src/corelib/animation/qabstractanimation.cpp b/src/corelib/animation/qabstractanimation.cpp
index 71ef45c..f5b9323 100644
--- a/src/corelib/animation/qabstractanimation.cpp
+++ b/src/corelib/animation/qabstractanimation.cpp
@@ -42,51 +42,58 @@
 /*!
     \class QAbstractAnimation
     \ingroup animation
-    \brief The QAbstractAnimation class provides an abstract base class for animations.
+    \brief The QAbstractAnimation class is the base of all animations.
     \since 4.5
     \preliminary
 
-    This class is part of \l{The Animation Framework}. It serves as a base class
-    for standard animations and groups, with functions for shared
-    functionality, and it also makes it easy for you to define custom
+    The class defines the functions for the functionality shared by
+    all animations. By inheriting this class, you can create custom
     animations that plug into the rest of the animation framework.
 
-    If you want to create an animation, you should look at the two subclasses,
-    QVariantAnimation and QAnimationGroup, instead.
-
-    QAbstractAnimation provides an interface for the current time and
-    duration, the loop count, and the state of an animation. These properties
-    define the base functionality common to all animations in Qt. The virtual
-    duration() function returns the local duration of the animation; i.e., for
-    how long the animation should update the current time before
-    looping. Subclasses can implement this function differently; for example,
-    QVariantAnimation returns the duration of a simple animated property, whereas
-    QAnimationGroup returns the duration of a set or sequence of
-    animations. You can also set a loop count by calling setLoopCount(); a
-    loop count of 2 will let the animation run twice (the default value is
-    1).
-
-    Like QTimeLine, QAbstractAnimation also provides an interface for starting
-    and stopping an animation, and for tracking its progress. You can call the
-    start() slot to start the animation. When the animation starts, the
-    stateChanged() signal is emitted, and state() returns Running. If you call the
-    stop() slot, the stateChanged() signal is emitted, and state() returns
-    Stopped. If you call the pause() slot, the stateChanged() signal is emitted
-    and state() returns Paused. If the animation reaches the end, the finished()
-    signal is emitted. You can check the current state by calling state().
-
-    QAbstractAnimation provides two functions that are pure virtual, and must
-    be reimplemented in a subclass: duration(), and updateCurrentTime(). The
-    duration() function lets you report a duration for the animation (a return
-    value of -1 signals that the animation runs forever until explicitly
-    stopped). The current time is delivered by the framework through calls to
-    updateCurrentTime(). By reimplementing this function, you can track the
-    animation progress and update your target objects accordingly. By
-    reimplementing updateState(), you can track the animation's state
-    changes, which is particularily useful for animations that are not driven
-    by time.
-
-    \sa QVariantAnimation, QAnimationGroup, {The Animation Framework}
+    The progress of an animation is given by its current time
+    (currentTime()), which is measured in milliseconds from the start
+    of the animation (0) to its end (duration()). The value is updated
+    automatically while the animation is running. It can also be set
+    directly with setCurrentTime().
+
+    At any point an animation is in one of three states:
+    \l{QAbstractAnimation::}{Running},
+    \l{QAbstractAnimation::}{Stopped}, or
+    \l{QAbstractAnimation::}{Paused}--as defined by the
+    \l{QAbstractAnimation::}{State} enum. The current state can be
+    changed by calling start(), stop(), pause(), or resume(). An
+    animation will always reset its \l{currentTime()}{current time}
+    when it is started. If paused, it will continue with the same
+    current time when resumed. When an animation is stopped, it cannot
+    be resumed, but will keep its current time (until started again).
+    QAbstractAnimation will emit stateChanged() whenever its state
+    changes.
+
+    An animation can loop any number of times by setting the loopCount
+    property. When an animation's current time reaches its duration(),
+    it will reset the current time and keep running. A loop count of 1
+    (the default value) means that the animation will run one time.
+    Note that a duration of -1 means that the animation will run until
+    stopped; the current time will increase indefinitely. When the
+    current time equals duration() and the animation is in its
+    final loop, the \l{QAbstractAnimation::}{Stopped} state is
+    entered, and the finished() signal is emitted.
+
+    QAbstractAnimation provides pure virtual functions used by
+    subclasses to track the progress of the animation: duration() and
+    updateCurrentTime(). The duration() function lets you report a
+    duration for the animation (as discussed above). The current time
+    is delivered by the animation framework through calls to
+    updateCurrentTime(). By reimplementing this function, you can
+    track the animation progress. Note that neither the interval
+    between calls nor the number of calls to this function are
+    defined; though, it will normally be 60 updates per second.
+
+    By reimplementing updateState(), you can track the animation's
+    state changes, which is particularly useful for animations that
+    are not driven by time.
+
+    \sa QVariantAnimation, QPropertyAnimation, QAnimationGroup, {The Animation Framework}
 */
 
 /*!
@@ -149,13 +156,13 @@
 #include <QtCore/qcoreevent.h>
 #include <QtCore/qpointer.h>
 
-#define TIMER_INTERVAL 16
+#define DEFAULT_TIMER_INTERVAL 16
 
 QT_BEGIN_NAMESPACE
 
 Q_GLOBAL_STATIC(QThreadStorage<QUnifiedTimer *>, unifiedTimer);
 
-QUnifiedTimer::QUnifiedTimer() : QObject(), lastTick(0)
+QUnifiedTimer::QUnifiedTimer() : QObject(), lastTick(0), timingInterval(DEFAULT_TIMER_INTERVAL), consistentTiming(false)
 {
 }
 
@@ -182,12 +189,38 @@ void QUnifiedTimer::updateRecentlyStartedAnimations()
     animationsToStart.clear();
 }
 
+/*
+  defines the timing interval. Default is DEFAULT_TIMER_INTERVAL
+*/
+void QUnifiedTimer::setTimingInterval(int interval)
+{
+    timingInterval = interval;
+    if (animationTimer.isActive()) {
+        //we changed the timing interval
+        animationTimer.start(timingInterval, this);
+    }
+}
+
+/*
+   this allows to have a consistent timer interval at each tick from the timer
+   not taking the real time that passed into account.
+*/
+void QUnifiedTimer::setConsistentTiming(bool b)
+{
+    consistentTiming = b;
+}
+
+int QUnifiedTimer::elapsedTime() const
+{
+    return lastTick;
+}
+
 void QUnifiedTimer::timerEvent(QTimerEvent *event)
 {
     //this is simply the time we last received a tick
-    int oldLastTick = lastTick;
+    const int oldLastTick = lastTick;
     if (time.isValid())
-        lastTick = time.elapsed();
+        lastTick = consistentTiming ? oldLastTick + timingInterval : time.elapsed();
 
     //we transfer the waiting animations into the "really running" state
     updateRecentlyStartedAnimations();
@@ -198,7 +231,7 @@ void QUnifiedTimer::timerEvent(QTimerEvent *event)
             animationTimer.stop();
             time = QTime();
         } else {
-            animationTimer.start(TIMER_INTERVAL, this);
+            animationTimer.start(timingInterval, this);
             lastTick = 0;
             time.start();
         }
diff --git a/src/corelib/animation/qabstractanimation_p.h b/src/corelib/animation/qabstractanimation_p.h
index 666e6a7..41983a5 100644
--- a/src/corelib/animation/qabstractanimation_p.h
+++ b/src/corelib/animation/qabstractanimation_p.h
@@ -110,7 +110,7 @@ private:
 };
 
 
-class QUnifiedTimer : public QObject
+class Q_CORE_EXPORT QUnifiedTimer : public QObject
 {
 private:
     QUnifiedTimer();
@@ -118,11 +118,17 @@ private:
 public:
     static QUnifiedTimer *instance();
 
-    void timerEvent(QTimerEvent *);
-    void updateTimer();
     void registerAnimation(QAbstractAnimation *animation);
     void unregisterAnimation(QAbstractAnimation *animation);
 
+    void setTimingInterval(int interval);
+    void setConsistentTiming(bool consistent);
+
+    int elapsedTime() const;
+
+protected:
+    void timerEvent(QTimerEvent *);
+    void updateTimer();
 
 private:
     void updateRecentlyStartedAnimations();
@@ -130,6 +136,8 @@ private:
     QBasicTimer animationTimer, startStopAnimationTimer;
     QTime time;
     int lastTick;
+    int timingInterval;
+    bool consistentTiming;
     QList<QAbstractAnimation*> animations, animationsToStart;
 };
 
diff --git a/src/corelib/animation/qanimationgroup.cpp b/src/corelib/animation/qanimationgroup.cpp
index 0d87527..e0be3f7 100644
--- a/src/corelib/animation/qanimationgroup.cpp
+++ b/src/corelib/animation/qanimationgroup.cpp
@@ -46,18 +46,46 @@
     \ingroup animation
     \preliminary
 
-    QAnimationGroup represents a group of animations, such as parallel or sequential,
-    and lets you combine different animations into one. The group manages any animation
-    that inherits QAbstractAnimation. By combining groups, you can easily construct
-    complex animation graphs.
-
-    The QAnimationGroup base class provides methods for adding and retrieving animations.
-    Besides that, you can remove animations by calling remove(), and clear the animation
-    group by calling clearAnimations(). You may keep track of changes in the group's animations by
-    listening to QEvent::ChildAdded and QEvent::ChildRemoved events.
-
-    QAnimationGroup takes ownership of the animations it manages, and ensures that they are
-    deleted when the animation group is deleted.
+    An animation group is a container for animations (subclasses of
+    QAbstractAnimation). A group is usually responsible for managing
+    the \l{QAbstractAnimation::State}{state} of its animations, i.e.,
+    it decides when to start, stop, resume, and pause them. Currently,
+    Qt provides two such groups: QParallelAnimationGroup and
+    QSequentialAnimationGroup. Look up their class descriptions for
+    details.
+
+    Since QAnimationGroup inherits from QAbstractAnimation, you can
+    combine groups, and easily construct complex animation graphs.
+    You can query QAbstractAnimation for the group it belongs to
+    (using the \l{QAbstractAnimation::}{group()} function).
+
+    To start a top-level animation group, you simply use the
+    \l{QAbstractAnimation::}{start()} function from
+    QAbstractAnimation. By a top-level animation group, we think of a
+    group that itself is not contained within another group. Starting
+    sub groups directly is not supported, and may lead to unexpected
+    behavior.
+
+    \omit OK, we'll put in a snippet on this here \endomit
+
+    QAnimationGroup provides methods for adding and retrieving
+    animations. Besides that, you can remove animations by calling
+    remove(), and clear the animation group by calling
+    clearAnimations(). You may keep track of changes in the group's
+    animations by listening to QEvent::ChildAdded and
+    QEvent::ChildRemoved events.
+
+    \omit OK, let's find a snippet here as well. \endomit
+
+    QAnimationGroup takes ownership of the animations it manages, and
+    ensures that they are deleted when the animation group is deleted.
+
+    You can also use a \l{The State Machine Framework}{state machine}
+    to create complex animations. The framework provides a special
+    state, QAnimationState, that plays an animation upon entry and
+    transitions to a new state when the animation has finished
+    playing. This technique can also be combined with using animation
+    groups.
 
     \sa QAbstractAnimation, QVariantAnimation, {The Animation Framework}
 */
diff --git a/src/corelib/animation/qparallelanimationgroup.cpp b/src/corelib/animation/qparallelanimationgroup.cpp
index 407ffde..e4bce6a 100644
--- a/src/corelib/animation/qparallelanimationgroup.cpp
+++ b/src/corelib/animation/qparallelanimationgroup.cpp
@@ -46,8 +46,27 @@
     \ingroup animation
     \preliminary
 
-    The animations are all started at the same time, and run in parallel. The animation group
-    finishes when the longest lasting animation has finished.
+    QParallelAnimationGroup--a \l{QAnimationGroup}{container for
+    animations}--starts all its animations when it is
+    \l{QAbstractAnimation::start()}{started} itself, i.e., runs all
+    animations in parallel. The animation group finishes when the
+    longest lasting animation has finished.
+
+    You can treat QParallelAnimation as any other QAbstractAnimation,
+    e.g., pause, resume, or add it to other animation groups.
+
+    \code
+        QParallelAnimationGroup *group = new QParallelAnimationGroup;
+        group->addAnimation(anim1);
+        group->addAnimation(anim2);
+
+        group->start();
+    \endcode
+    
+    In this example, \c anim1 and \c anim2 are two
+    \l{QPropertyAnimation}s that have already been set up.
+
+    \sa QAnimationGroup, QPropertyAnimation, {The Animation Framework}
 */
 
 #ifndef QT_NO_ANIMATION
diff --git a/src/corelib/animation/qpauseanimation.cpp b/src/corelib/animation/qpauseanimation.cpp
index 30ea92c..685fa98 100644
--- a/src/corelib/animation/qpauseanimation.cpp
+++ b/src/corelib/animation/qpauseanimation.cpp
@@ -45,6 +45,22 @@
     \since 4.5
     \ingroup animation
     \preliminary
+
+    If you wish to introduce a delay between animations in a
+    QSequentialAnimationGroup, you can insert a QPauseAnimation. This
+    class does not animate anything, but does not
+    \l{QAbstractAnimation::finished()}{finish} before a specified
+    number of milliseconds have elapsed from when it was started. You
+    specify the duration of the pause in the constructor. It can also
+    be set directly with setDuration().    
+
+    It is not necessary to construct a QPauseAnimation yourself.
+    QSequentialAnimationGroup provides the convenience functions
+    \l{QSequentialAnimationGroup::}{addPause()} and
+    \l{QSequentialAnimationGroup::}{insertPauseAt()}. These functions
+    simply take the number of milliseconds the pause should last.
+
+    \sa QSequentialAnimationGroup
 */
 
 #ifndef QT_NO_ANIMATION
diff --git a/src/corelib/animation/qpropertyanimation.cpp b/src/corelib/animation/qpropertyanimation.cpp
index 9a0c5bc..96cfa6b 100644
--- a/src/corelib/animation/qpropertyanimation.cpp
+++ b/src/corelib/animation/qpropertyanimation.cpp
@@ -41,27 +41,48 @@
 
 /*!
     \class QPropertyAnimation
-    \brief The QPropertyAnimation class animates properties for QObject(and QWidget)
+    \brief The QPropertyAnimation class animates Qt properties
     \ingroup animation
     \preliminary
 
-    This class is part of {The Animation Framework}.  You can use QPropertyAnimation
-    by itself as a simple animation class, or as part of more complex
-    animations through QAnimationGroup.
-
-    The most common way to use QPropertyAnimation is to construct an instance
-    of it by passing a pointer to a QObject or a QWidget, and the name of the
-    property you would like to animate to QPropertyAnimation's constructor.
-
-    The start value of the animation is optional. If you do not set any start
-    value, the animation will operate on the target's current property value
-    at the point when the animation was started. You can call setStartValue()
-    to set the start value, and setEndValue() to set the target value for
-    the animated property.
-
-    Animations can operate on QObjects and QWidgets. You can choose to assign a
-    target object by either calling setTargetObject() or by passing a QObject
-    pointer to QPropertyAnimation's constructor.
+    QPropertyAnimation interpolates over \l{Qt's Property System}{Qt
+    properties}. As property values are stored in \l{QVariant}s, the
+    class inherits QVariantAnimation, and supports animation of the
+    same \l{QVariant::Type}{variant types} as its super class. 
+
+    A class declaring properties must be a QObject. To make it
+    possible to animate a property, it must provide a setter (so that
+    QPropertyAnimation can set the property's value). Note that this
+    makes it possible to animate many of Qt's widgets. Let's look at
+    an example:
+    
+    \code
+        QPropertyAnimation animation(myWidget, "geometry");
+        animation.setDuration(10000);
+        animation.setStartValue(QRect(0, 0, 100, 30));
+        animation.setEndValue(QRect(250, 250, 100, 30));
+
+        animation.start();
+    \endcode
+
+    The property name and the QObject instance of which property
+    should be animated are passed to the constructor. You can then
+    specify the start and end value of the property. The procedure is
+    equal for properties in classes you have implemented
+    yourself--just check with QVariantAnimation that your QVariant
+    type is supported.
+
+    The QVariantAnimation class description explains how to set up the
+    animation in detail. Note, however, that if a start value is not
+    set, the property will start at the value it had when the
+    QPropertyAnimation instance was created.
+
+    QPropertyAnimation works like a charm on its own. For complex
+    animations that, for instance, contain several objects,
+    QAnimationGroup is provided. An animation group is an animation
+    that can contain other animations, and that can manage when its
+    animations are played. Look at QParallelAnimationGroup for an
+    example.
 
     \sa QVariantAnimation, QAnimationGroup, {The Animation Framework}
 */
@@ -97,6 +118,8 @@ void QPropertyAnimationPrivate::updateMetaProperty()
             property = mo->property(propertyIndex);
             propertyType = property.userType();
         } else {
+            if (!target->dynamicPropertyNames().contains(propertyName))
+                qWarning("QPropertyAnimation: you're trying to animate a non-existing property %s of your QObject", propertyName.constData());
             hasMetaProperty = 2;
         }
     }
diff --git a/src/corelib/animation/qsequentialanimationgroup.cpp b/src/corelib/animation/qsequentialanimationgroup.cpp
index 61ff98d..38f4818 100644
--- a/src/corelib/animation/qsequentialanimationgroup.cpp
+++ b/src/corelib/animation/qsequentialanimationgroup.cpp
@@ -46,13 +46,36 @@
     \ingroup animation
     \preliminary
 
-    The first animation in the group is started first, and when it finishes, the next animation
-    is started, and so on. The animation group finishes when the last animation has finished.
+    QSequentialAnimationGroup is a QAnimationGroup that runs its
+    animations in sequence, i.e., it starts one animation after
+    another has finished playing. The animations are played in the
+    order they are added to the group (using
+    \l{QAnimationGroup::}{addAnimation()} or
+    \l{QAnimationGroup::}{insertAnimationAt()}). The animation group
+    finishes when its last animation has finished.
 
-    At each moment there is at most one animation that is active in the group, called currentAnimation.
-    An empty group has no current animation.
+    At each moment there is at most one animation that is active in
+    the group; it is returned by currentAnimation(). An empty group
+    has no current animation.
 
-    You can call addPause() or insertPause() to add a pause to a sequential animation group.
+    A sequential animation group can be treated as any other
+    animation, i.e., it can be started, stopped, and added to other
+    groups. You can also call addPause() or insertPauseAt() to add a
+    pause to a sequential animation group.
+
+    \code
+        QSequentialAnimationGroup group;
+
+        group.addAnimation(anim1);
+        group.addAnimation(anim2);
+
+        group.start();
+    \endcode
+
+    In this example, \c anim1 and \c anim2 are two already set up
+    \l{QPropertyAnimation}s.
+
+    \sa QAnimationGroup, QAbstractAnimation, {The Animation Framework}
 */
 
 #ifndef QT_NO_ANIMATION
diff --git a/src/corelib/animation/qvariantanimation.cpp b/src/corelib/animation/qvariantanimation.cpp
index bb6cf1c..73ed0df 100644
--- a/src/corelib/animation/qvariantanimation.cpp
+++ b/src/corelib/animation/qvariantanimation.cpp
@@ -59,26 +59,68 @@ QT_BEGIN_NAMESPACE
     \since 4.5
     \preliminary
 
-    This class is part of {The Animation Framework}. It serves as a base class
-    for property and item animations, with functions for shared functionality.
-
-    If you want to create an animation, you should look at QPropertyAnimation instead.
-
+    This class is part of \l{The Animation Framework}. It serves as a
+    base class for property and item animations, with functions for
+    shared functionality.
+
+    QVariantAnimation cannot be used directly as it is an abstract
+    class; it does not implement
+    \l{QAbstractAnimation::}{updateCurrentValue()} from
+    QAbstractAnimation. The class performs interpolation over
+    \l{QVariant}s, but leaves using the interpolated values to its
+    subclasses. Currently, Qt provides QPropertyAnimation, which
+    animates Qt \l{Qt's Property System}{properties}. See the
+    QPropertyAnimation class description if you wish to animate such
+    properties.
+    
     You can then set start and end values for the property by calling
     setStartValue() and setEndValue(), and finally call start() to
-    start the animation. When control goes back to the event loop, QVariantAnimation
-    will interpolate the property of the target object and emit the valueChanged
-    signal. To react to a change in the current value you have to reimplement the
-    updateCurrentValue virtual method.
-
-    There are two ways to affect how QVariantAnimation interpolates the values.
-    You can set an easing curve by calling setEasingCurve(), and configure the
-    duration by calling setDuration(). You can change how the QVariants are
-    interpolated by creating a subclass of QVariantAnimation, and reimplementing the
-    virtual interpolated() function.
-
-
-    \sa QPropertyAnimation, {The Animation Framework}
+    start the animation. QVariantAnimation will interpolate the
+    property of the target object and emit valueChanged(). To react to
+    a change in the current value you have to reimplement the
+    updateCurrentValue() virtual function.
+
+    It is also possible to set values at specified steps situated
+    between the start and end value. The interpolation will then
+    touch these points at the specified steps. Note that the start and
+    end values are defined as the key values at 0.0 and 1.0.
+
+    There are two ways to affect how QVariantAnimation interpolates
+    the values. You can set an easing curve by calling
+    setEasingCurve(), and configure the duration by calling
+    setDuration(). You can change how the QVariants are interpolated
+    by creating a subclass of QVariantAnimation, and reimplementing
+    the virtual interpolated() function.
+
+    Subclassing QVariantAnimation can be an alternative if you have
+    \l{QVariant}s that you do not wish to declare as Qt properties.
+    Note, however, that you in most cases will be better off declaring
+    your QVariant as a property.
+
+    Not all QVariant types are supported. Below is a list of currently
+    supported QVariant types:
+
+    \list
+        \o \l{QMetaType::}{Int}
+        \o \l{QMetaType::}{Double}
+        \o \l{QMetaType::}{Float}
+        \o \l{QMetaType::}{QLine}
+        \o \l{QMetaType::}{QLineF}
+        \o \l{QMetaType::}{QPoint}
+        \o \l{QMetaType::}{QSize}
+        \o \l{QMetaType::}{QSizeF}
+        \o \l{QMetaType::}{QRect}
+        \o \l{QMetaType::}{QRectF}
+    \endlist 
+
+    If you need to interpolate other variant types, including custom
+    types, you have to implement interpolation for these yourself.
+    You do this by reimplementing interpolated(), which returns
+    interpolation values for the value being interpolated. 
+
+    \omit We need some snippets around here. \endomit
+
+    \sa QPropertyAnimation, QAbstractAnimation, {The Animation Framework}
 */
 
 /*!
@@ -261,16 +303,16 @@ QVariantAnimation::~QVariantAnimation()
     \property QVariantAnimation::easingCurve
     \brief the easing curve of the animation
 
-    This property defines the easing curve of the animation. By default, a
-    linear easing curve is used, resulting in linear interpolation of the
-    end property. For many animations, it's useful to try different easing
-    curves, including QEasingCurve::InCirc, which provides a circular entry curve,
-    and QEasingCurve::InOutElastic, which provides an elastic effect on the values
-    of the interpolated property.
+    This property defines the easing curve of the animation. By
+    default, a linear easing curve is used, resulting in linear
+    interpolation. Other curves are provided, for instance,
+    QEasingCurve::InCirc, which provides a circular entry curve.
+    Another example is QEasingCurve::InOutElastic, which provides an
+    elastic effect on the values of the interpolated variant.
 
-    The easing curve is used with the interpolator, the interpolated() virtual
-    function, the animation's duration, and loopCount, to control how the
-    current value changes as the animation progresses.
+    The easing curve is used with the interpolator, the interpolated()
+    virtual function, the animation's duration, and iterationCount, to
+    control how the current value changes as the animation progresses.
 */
 QEasingCurve QVariantAnimation::easingCurve() const
 {
@@ -372,8 +414,8 @@ QVariantAnimation::Interpolator QVariantAnimationPrivate::getInterpolator(int in
     \property QVariantAnimation::duration
     \brief the duration of the animation
 
-    This property describes the duration of the animation. The default
-    duration is 250 milliseconds.
+    This property describes the duration in milliseconds of the
+    animation. The default duration is 250 milliseconds.
 
     \sa QAbstractAnimation::duration()
  */
@@ -509,17 +551,22 @@ void QVariantAnimation::setKeyValues(const KeyValues &keyValues)
 
 /*!
     \property QVariantAnimation::currentValue
-    \brief the current value of the animation
+    \brief the current value of the animation.
 
-    This property describes the current value; an interpolation between the
-    start value and the end value, using the current time for progress.
+    This property describes the current value; an interpolated value
+    between the \l{startValue}{start value} and the \l{endValue}{end
+    value}, using the current time for progress. The value itself is
+    obtained from interpolated(), which is called repeatedly as the
+    animation is running.
 
-    QVariantAnimation calls the virtual updateCurrentValue() function when the
-    current value changes. This is particularily useful for subclasses that
-    need to track updates.
+    QVariantAnimation calls the virtual updateCurrentValue() function
+    when the current value changes. This is particularly useful for
+    subclasses that need to track updates. For example,
+    QPropertyAnimation uses this function to animate Qt \l{Qt's
+    Property System}{properties}.
 
     \sa startValue, endValue
- */
+*/
 QVariant QVariantAnimation::currentValue() const
 {
     Q_D(const QVariantAnimation);
@@ -549,13 +596,22 @@ void QVariantAnimation::updateState(QAbstractAnimation::State oldState,
 }
 
 /*!
-    This virtual function returns the linear interpolation between variants \a
-    from and \a to, at \a progress, usually a value between 0 and 1. You can reimplement
-    this function in a subclass of QVariantAnimation to provide your own interpolation
-    algorithm. Note that in order for the interpolation to work with a QEasingCurve
-    that return a value smaller than 0 or larger than 1 (such as QEasingCurve::InBack)
-    you should make sure that it can extrapolate. If the semantic of the datatype
-    does not allow extrapolation this function should handle that gracefully.
+
+    This virtual function returns the linear interpolation between
+    variants \a from and \a to, at \a progress, usually a value
+    between 0 and 1. You can reimplement this function in a subclass
+    of QVariantAnimation to provide your own interpolation algorithm.
+
+    Note that in order for the interpolation to work with a
+    QEasingCurve that return a value smaller than 0 or larger than 1
+    (such as QEasingCurve::InBack) you should make sure that it can
+    extrapolate. If the semantic of the datatype does not allow
+    extrapolation this function should handle that gracefully.
+
+    You should call the QVariantAnimation implementation of this
+    function if you want your class to handle the types already
+    supported by Qt (see class QVariantAnimation description for a
+    list of supported types).
 
     \sa QEasingCurve
  */
diff --git a/src/corelib/arch/qatomic_mips.h b/src/corelib/arch/qatomic_mips.h
index b263aab..ea9954b 100644
--- a/src/corelib/arch/qatomic_mips.h
+++ b/src/corelib/arch/qatomic_mips.h
@@ -103,16 +103,25 @@ Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree()
 
 #if defined(Q_CC_GNU) && !defined(Q_OS_IRIX)
 
+#if _MIPS_SIM == _ABIO32
+#define SET_MIPS2 ".set mips2\n\t"
+#else
+#define SET_MIPS2
+#endif
+
 inline bool QBasicAtomicInt::ref()
 {
     register int originalValue;
     register int newValue;
-    asm volatile("0:\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "0:\n"
                  "ll %[originalValue], %[_q_value]\n"
                  "addiu %[newValue], %[originalValue], %[one]\n"
                  "sc %[newValue], %[_q_value]\n"
                  "beqz %[newValue], 0b\n"
                  "nop\n"
+                 ".set pop\n"
                  : [originalValue] "=&r" (originalValue),
                    [_q_value] "+m" (_q_value),
                    [newValue] "=&r" (newValue)
@@ -125,12 +134,15 @@ inline bool QBasicAtomicInt::deref()
 {
     register int originalValue;
     register int newValue;
-    asm volatile("0:\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "0:\n"
                  "ll %[originalValue], %[_q_value]\n"
                  "addiu %[newValue], %[originalValue], %[minusOne]\n"
                  "sc %[newValue], %[_q_value]\n"
                  "beqz %[newValue], 0b\n"
                  "nop\n"
+                 ".set pop\n"
                  : [originalValue] "=&r" (originalValue),
                    [_q_value] "+m" (_q_value),
                    [newValue] "=&r" (newValue)
@@ -143,7 +155,9 @@ inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue)
 {
     register int result;
     register int tempValue;
-    asm volatile("0:\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "0:\n"
                  "ll %[result], %[_q_value]\n"
                  "xor %[result], %[result], %[expectedValue]\n"
                  "bnez %[result], 0f\n"
@@ -153,6 +167,7 @@ inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue)
                  "beqz %[tempValue], 0b\n"
                  "nop\n"
                  "0:\n"
+                 ".set pop\n"
                  : [result] "=&r" (result),
                    [tempValue] "=&r" (tempValue),
                    [_q_value] "+m" (_q_value)
@@ -166,7 +181,9 @@ inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
 {
     register int result;
     register int tempValue;
-    asm volatile("0:\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "0:\n"
                  "ll %[result], %[_q_value]\n"
                  "xor %[result], %[result], %[expectedValue]\n"
                  "bnez %[result], 0f\n"
@@ -177,6 +194,7 @@ inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
                  "nop\n"
                  "sync\n"
                  "0:\n"
+                 ".set pop\n"
                  : [result] "=&r" (result),
                    [tempValue] "=&r" (tempValue),
                    [_q_value] "+m" (_q_value)
@@ -190,7 +208,9 @@ inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
 {
     register int result;
     register int tempValue;
-    asm volatile("sync\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "sync\n"
                  "0:\n"
                  "ll %[result], %[_q_value]\n"
                  "xor %[result], %[result], %[expectedValue]\n"
@@ -201,6 +221,7 @@ inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
                  "beqz %[tempValue], 0b\n"
                  "nop\n"
                  "0:\n"
+                 ".set pop\n"
                  : [result] "=&r" (result),
                    [tempValue] "=&r" (tempValue),
                    [_q_value] "+m" (_q_value)
@@ -219,12 +240,15 @@ inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue)
 {
     register int originalValue;
     register int tempValue;
-    asm volatile("0:\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "0:\n"
                  "ll %[originalValue], %[_q_value]\n"
                  "move %[tempValue], %[newValue]\n"
                  "sc %[tempValue], %[_q_value]\n"
                  "beqz %[tempValue], 0b\n"
                  "nop\n"
+                 ".set pop\n"
                  : [originalValue] "=&r" (originalValue),
                    [tempValue] "=&r" (tempValue),
                    [_q_value] "+m" (_q_value)
@@ -237,13 +261,16 @@ inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue)
 {
     register int originalValue;
     register int tempValue;
-    asm volatile("0:\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "0:\n"
                  "ll %[originalValue], %[_q_value]\n"
                  "move %[tempValue], %[newValue]\n"
                  "sc %[tempValue], %[_q_value]\n"
                  "beqz %[tempValue], 0b\n"
                  "nop\n"
                  "sync\n"
+                 ".set pop\n"
                  : [originalValue] "=&r" (originalValue),
                    [tempValue] "=&r" (tempValue),
                    [_q_value] "+m" (_q_value)
@@ -256,13 +283,16 @@ inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue)
 {
     register int originalValue;
     register int tempValue;
-    asm volatile("sync\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "sync\n"
                  "0:\n"
                  "ll %[originalValue], %[_q_value]\n"
                  "move %[tempValue], %[newValue]\n"
                  "sc %[tempValue], %[_q_value]\n"
                  "beqz %[tempValue], 0b\n"
                  "nop\n"
+                 ".set pop\n"
                  : [originalValue] "=&r" (originalValue),
                    [tempValue] "=&r" (tempValue),
                    [_q_value] "+m" (_q_value)
@@ -280,12 +310,15 @@ inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd)
 {
     register int originalValue;
     register int newValue;
-    asm volatile("0:\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "0:\n"
                  "ll %[originalValue], %[_q_value]\n"
                  "addu %[newValue], %[originalValue], %[valueToAdd]\n"
                  "sc %[newValue], %[_q_value]\n"
                  "beqz %[newValue], 0b\n"
                  "nop\n"
+                 ".set pop\n"
                  : [originalValue] "=&r" (originalValue),
                    [_q_value] "+m" (_q_value),
                    [newValue] "=&r" (newValue)
@@ -298,13 +331,16 @@ inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd)
 {
     register int originalValue;
     register int newValue;
-    asm volatile("0:\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "0:\n"
                  "ll %[originalValue], %[_q_value]\n"
                  "addu %[newValue], %[originalValue], %[valueToAdd]\n"
                  "sc %[newValue], %[_q_value]\n"
                  "beqz %[newValue], 0b\n"
                  "nop\n"
                  "sync\n"
+                 ".set pop\n"
                  : [originalValue] "=&r" (originalValue),
                    [_q_value] "+m" (_q_value),
                    [newValue] "=&r" (newValue)
@@ -317,13 +353,16 @@ inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd)
 {
     register int originalValue;
     register int newValue;
-    asm volatile("sync\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "sync\n"
                  "0:\n"
                  "ll %[originalValue], %[_q_value]\n"
                  "addu %[newValue], %[originalValue], %[valueToAdd]\n"
                  "sc %[newValue], %[_q_value]\n"
                  "beqz %[newValue], 0b\n"
                  "nop\n"
+                 ".set pop\n"
                  : [originalValue] "=&r" (originalValue),
                    [_q_value] "+m" (_q_value),
                    [newValue] "=&r" (newValue)
@@ -350,7 +389,9 @@ Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValu
 {
     register T *result;
     register T *tempValue;
-    asm volatile("0:\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "0:\n"
                  LLP" %[result], %[_q_value]\n"
                  "xor %[result], %[result], %[expectedValue]\n"
                  "bnez %[result], 0f\n"
@@ -360,6 +401,7 @@ Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValu
                  "beqz %[tempValue], 0b\n"
                  "nop\n"
                  "0:\n"
+                 ".set pop\n"
                  : [result] "=&r" (result),
                    [tempValue] "=&r" (tempValue),
                    [_q_value] "+m" (_q_value)
@@ -374,7 +416,9 @@ Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValu
 {
     register T *result;
     register T *tempValue;
-    asm volatile("0:\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "0:\n"
                  LLP" %[result], %[_q_value]\n"
                  "xor %[result], %[result], %[expectedValue]\n"
                  "bnez %[result], 0f\n"
@@ -385,6 +429,7 @@ Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValu
                  "nop\n"
                  "sync\n"
                  "0:\n"
+                 ".set pop\n"
                  : [result] "=&r" (result),
                    [tempValue] "=&r" (tempValue),
                    [_q_value] "+m" (_q_value)
@@ -399,7 +444,9 @@ Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValu
 {
     register T *result;
     register T *tempValue;
-    asm volatile("sync\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "sync\n"
                  "0:\n"
                  LLP" %[result], %[_q_value]\n"
                  "xor %[result], %[result], %[expectedValue]\n"
@@ -410,6 +457,7 @@ Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValu
                  "beqz %[tempValue], 0b\n"
                  "nop\n"
                  "0:\n"
+                 ".set pop\n"
                  : [result] "=&r" (result),
                    [tempValue] "=&r" (tempValue),
                    [_q_value] "+m" (_q_value)
@@ -430,12 +478,15 @@ Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelaxed(T *newValue)
 {
     register T *originalValue;
     register T *tempValue;
-    asm volatile("0:\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "0:\n"
                  LLP" %[originalValue], %[_q_value]\n"
                  "move %[tempValue], %[newValue]\n"
                  SCP" %[tempValue], %[_q_value]\n"
                  "beqz %[tempValue], 0b\n"
                  "nop\n"
+                 ".set pop\n"
                  : [originalValue] "=&r" (originalValue),
                    [tempValue] "=&r" (tempValue),
                    [_q_value] "+m" (_q_value)
@@ -449,13 +500,16 @@ Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue)
 {
     register T *originalValue;
     register T *tempValue;
-    asm volatile("0:\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "0:\n"
                  LLP" %[originalValue], %[_q_value]\n"
                  "move %[tempValue], %[newValue]\n"
                  SCP" %[tempValue], %[_q_value]\n"
                  "beqz %[tempValue], 0b\n"
                  "nop\n"
                  "sync\n"
+                 ".set pop\n"
                  : [originalValue] "=&r" (originalValue),
                    [tempValue] "=&r" (tempValue),
                    [_q_value] "+m" (_q_value)
@@ -469,13 +523,16 @@ Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelease(T *newValue)
 {
     register T *originalValue;
     register T *tempValue;
-    asm volatile("sync\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "sync\n"
                  "0:\n"
                  LLP" %[originalValue], %[_q_value]\n"
                  "move %[tempValue], %[newValue]\n"
                  SCP" %[tempValue], %[_q_value]\n"
                  "beqz %[tempValue], 0b\n"
                  "nop\n"
+                 ".set pop\n"
                  : [originalValue] "=&r" (originalValue),
                    [tempValue] "=&r" (tempValue),
                    [_q_value] "+m" (_q_value)
@@ -495,12 +552,15 @@ Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelaxed(qptrdiff valueTo
 {
     register T *originalValue;
     register T *newValue;
-    asm volatile("0:\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "0:\n"
                  LLP" %[originalValue], %[_q_value]\n"
                  "addu %[newValue], %[originalValue], %[valueToAdd]\n"
                  SCP" %[newValue], %[_q_value]\n"
                  "beqz %[newValue], 0b\n"
                  "nop\n"
+                 ".set pop\n"
                  : [originalValue] "=&r" (originalValue),
                    [_q_value] "+m" (_q_value),
                    [newValue] "=&r" (newValue)
@@ -514,13 +574,16 @@ Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddAcquire(qptrdiff valueTo
 {
     register T *originalValue;
     register T *newValue;
-    asm volatile("0:\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "0:\n"
                  LLP" %[originalValue], %[_q_value]\n"
                  "addu %[newValue], %[originalValue], %[valueToAdd]\n"
                  SCP" %[newValue], %[_q_value]\n"
                  "beqz %[newValue], 0b\n"
                  "nop\n"
                  "sync\n"
+                 ".set pop\n"
                  : [originalValue] "=&r" (originalValue),
                    [_q_value] "+m" (_q_value),
                    [newValue] "=&r" (newValue)
@@ -534,13 +597,16 @@ Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueTo
 {
     register T *originalValue;
     register T *newValue;
-    asm volatile("sync\n"
+    asm volatile(".set push\n"
+                 SET_MIPS2
+                 "sync\n"
                  "0:\n"
                  LLP" %[originalValue], %[_q_value]\n"
                  "addu %[newValue], %[originalValue], %[valueToAdd]\n"
                  SCP" %[newValue], %[_q_value]\n"
                  "beqz %[newValue], 0b\n"
                  "nop\n"
+                 ".set pop\n"
                  : [originalValue] "=&r" (originalValue),
                    [_q_value] "+m" (_q_value),
                    [newValue] "=&r" (newValue)
diff --git a/src/corelib/codecs/qtsciicodec.cpp b/src/corelib/codecs/qtsciicodec.cpp
index 14d2c9c..0ec0567 100644
--- a/src/corelib/codecs/qtsciicodec.cpp
+++ b/src/corelib/codecs/qtsciicodec.cpp
@@ -180,8 +180,7 @@ QByteArray QTsciiCodec::name() const
 */
 int QTsciiCodec::mibEnum() const
 {
-  /* There is no MIBEnum for TSCII now */
-  return -3197;
+  return 2107;
 }
 
 static const int UnToTsLast = 124; // 125 items -- so the last will be 124
diff --git a/src/corelib/codecs/qutfcodec.cpp b/src/corelib/codecs/qutfcodec.cpp
index 281bf75..1ac592e 100644
--- a/src/corelib/codecs/qutfcodec.cpp
+++ b/src/corelib/codecs/qutfcodec.cpp
@@ -413,9 +413,7 @@ QByteArray QUtf16Codec::name() const
 
 QList<QByteArray> QUtf16Codec::aliases() const
 {
-    QList<QByteArray> list;
-    list << "ISO-10646-UCS-2";
-    return list;
+    return QList<QByteArray>();
 }
 
 int QUtf16BECodec::mibEnum() const
diff --git a/src/corelib/concurrent/qfutureinterface.h b/src/corelib/concurrent/qfutureinterface.h
index 85d03c9..345bebe 100644
--- a/src/corelib/concurrent/qfutureinterface.h
+++ b/src/corelib/concurrent/qfutureinterface.h
@@ -165,6 +165,8 @@ public:
 
     QFutureInterface &operator=(const QFutureInterface &other)
     {
+        if (referenceCountIsOne())
+            resultStore().clear();
         QFutureInterfaceBase::operator=(other);
         return *this;
     }
diff --git a/src/corelib/global/qfeatures.h b/src/corelib/global/qfeatures.h
index 6d55f7c..2189723 100644
--- a/src/corelib/global/qfeatures.h
+++ b/src/corelib/global/qfeatures.h
@@ -120,6 +120,9 @@
 // QMovie
 //#define QT_NO_MOVIE
 
+// QNetworkInterface
+//#define QT_NO_NETWORKINTERFACE
+
 // QNetworkProxy
 //#define QT_NO_NETWORKPROXY
 
@@ -198,12 +201,12 @@
 // Qt Prerendered Font Format
 //#define QT_NO_QWS_QPF
 
-// Raster Paint Engine callback functions
-//#define QT_NO_RASTERCALLBACKS
-
 // Qt Prerendered Font Format 2
 //#define QT_NO_QWS_QPF2
 
+// Raster Paint Engine callback functions
+//#define QT_NO_RASTERCALLBACKS
+
 // Resize Handler
 //#define QT_NO_RESIZEHANDLER
 
@@ -273,9 +276,6 @@
 // HtmlParser
 //#define QT_NO_TEXTHTMLPARSER
 
-// OdfWriter
-//#define QT_NO_TEXTODFWRITER
-
 // QTextStream
 //#define QT_NO_TEXTSTREAM
 
@@ -316,6 +316,11 @@
 #define QT_NO_BUTTONGROUP
 #endif
 
+// QClipboard
+#if !defined(QT_NO_CLIPBOARD) && (defined(QT_NO_QWS_PROPERTIES))
+#define QT_NO_CLIPBOARD
+#endif
+
 // Codecs
 #if !defined(QT_NO_CODECS) && (defined(QT_NO_TEXTCODEC))
 #define QT_NO_CODECS
@@ -376,11 +381,6 @@
 #define QT_NO_PHONON_VOLUMESLIDER
 #endif
 
-// QPrinter
-#if !defined(QT_NO_PRINTER) && (defined(QT_NO_TEXTSTREAM))
-#define QT_NO_PRINTER
-#endif
-
 // QProcess
 #if !defined(QT_NO_PROCESS) && (defined(QT_NO_THREAD))
 #define QT_NO_PROCESS
@@ -481,11 +481,6 @@
 #define QT_NO_XMLSTREAMWRITER
 #endif
 
-// Odf Writer 
-#if !defined(QT_NO_TEXTODFWRITER) && (defined(QT_NO_XMLSTREAMWRITER)) 
-#define QT_NO_TEXTODFWRITER 
-#endif 
-
 // Context menu
 #if !defined(QT_NO_CONTEXTMENU) && (defined(QT_NO_MENU))
 #define QT_NO_CONTEXTMENU
@@ -511,11 +506,21 @@
 #define QT_NO_LIBRARY
 #endif
 
+// QPrinter
+#if !defined(QT_NO_PRINTER) && (defined(QT_NO_TEXTSTREAM) || defined(QT_NO_PICTURE))
+#define QT_NO_PRINTER
+#endif
+
 // QScrollArea
 #if !defined(QT_NO_SCROLLAREA) && (defined(QT_NO_SCROLLBAR))
 #define QT_NO_SCROLLAREA
 #endif
 
+// OdfWriter
+#if !defined(QT_NO_TEXTODFWRITER) && (defined(QT_NO_XMLSTREAMWRITER))
+#define QT_NO_TEXTODFWRITER
+#endif
+
 // QToolButton
 #if !defined(QT_NO_TOOLBUTTON) && (defined(QT_NO_ICON) || defined(QT_NO_ACTION))
 #define QT_NO_TOOLBUTTON
@@ -636,16 +641,6 @@
 #define QT_NO_WHATSTHIS
 #endif
 
-// QClipboard
-#if !defined(QT_NO_CLIPBOARD) && (defined(QT_NO_QWS_PROPERTIES))
-#define QT_NO_CLIPBOARD
-#endif
-
-// Common UNIX Printing System
-#if !defined(QT_NO_CUPS) && (defined(QT_NO_PRINTER) || defined(QT_NO_LIBRARY))
-#define QT_NO_CUPS
-#endif
-
 // QDirModel
 #if !defined(QT_NO_DIRMODEL) && (defined(QT_NO_ITEMVIEWS))
 #define QT_NO_DIRMODEL
@@ -726,6 +721,11 @@
 #define QT_NO_COMPLETER
 #endif
 
+// Common UNIX Printing System
+#if !defined(QT_NO_CUPS) && (defined(QT_NO_PRINTER) || defined(QT_NO_LIBRARY))
+#define QT_NO_CUPS
+#endif
+
 // QDataWidgetMapper
 #if !defined(QT_NO_DATAWIDGETMAPPER) && (defined(QT_NO_ITEMVIEWS) || defined(QT_NO_PROPERTIES))
 #define QT_NO_DATAWIDGETMAPPER
@@ -757,7 +757,7 @@
 #endif
 
 // QPrintPreviewWidget
-#if !defined(QT_NO_PRINTPREVIEWWIDGET) && (defined(QT_NO_GRAPHICSVIEW) || defined(QT_NO_PRINTER) || defined(QT_NO_PICTURE))
+#if !defined(QT_NO_PRINTPREVIEWWIDGET) && (defined(QT_NO_GRAPHICSVIEW) || defined(QT_NO_PRINTER))
 #define QT_NO_PRINTPREVIEWWIDGET
 #endif
 
diff --git a/src/corelib/global/qglobal.h b/src/corelib/global/qglobal.h
index 025442a..a0ea68c 100644
--- a/src/corelib/global/qglobal.h
+++ b/src/corelib/global/qglobal.h
@@ -44,11 +44,11 @@
 
 #include <stddef.h>
 
-#define QT_VERSION_STR   "4.5.1"
+#define QT_VERSION_STR   "4.5.2"
 /*
    QT_VERSION is (major << 16) + (minor << 8) + patch.
 */
-#define QT_VERSION 0x040501
+#define QT_VERSION 0x040502
 /*
    can be used like #if (QT_VERSION >= QT_VERSION_CHECK(4, 4, 0))
 */
@@ -2281,9 +2281,9 @@ QT3_SUPPORT Q_CORE_EXPORT const char *qInstallPathSysconf();
                                  | QT_MODULE_GRAPHICSVIEW \
                                  | QT_MODULE_HELP \
                                  | QT_MODULE_TEST \
-                                 | QT_MODULE_DBUS)
-#define QT_EDITION_DESKTOP      (QT_EDITION_OPENSOURCE \
+                                 | QT_MODULE_DBUS \
                                  | QT_MODULE_ACTIVEQT)
+#define QT_EDITION_DESKTOP      (QT_EDITION_OPENSOURCE)
 #define QT_EDITION_UNIVERSAL    QT_EDITION_DESKTOP
 #define QT_EDITION_ACADEMIC     QT_EDITION_DESKTOP
 #define QT_EDITION_EDUCATIONAL  QT_EDITION_DESKTOP
diff --git a/src/corelib/global/qlibraryinfo.cpp b/src/corelib/global/qlibraryinfo.cpp
index ada08c7..29e356e 100644
--- a/src/corelib/global/qlibraryinfo.cpp
+++ b/src/corelib/global/qlibraryinfo.cpp
@@ -485,100 +485,27 @@ QT_END_NAMESPACE
 
 #if defined(Q_CC_GNU) && defined(Q_OS_LINUX) && !defined(QT_LINUXBASE) && !defined(QT_BOOTSTRAPPED)
 
-#  include <sys/syscall.h>
-#  include <unistd.h>
-
-static const char boilerplate[] =
-    "This is the QtCore library version " QT_VERSION_STR "\n"
-    "Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).\n"
-    "Contact: Qt Software Information (qt-info@nokia.com)\n"
-    "\n"
-    "Build key:           " QT_BUILD_KEY;
-
-extern "C" {
-void qt_core_init_boilerplate() __attribute__((noreturn));
-}
+#  include <stdio.h>
+#  include <stdlib.h>
 
-#  if defined(QT_ARCH_I386)
-#define sysinit() (void)0
-#define syswrite(msg, len)                                              \
-    ({ int res;                                                         \
-        asm volatile ("movl  %%ebx, %%edi\n"                            \
-                      "movl  $1, %%ebx\n"                               \
-                      "int   $0x80\n"                                   \
-                      "movl  %%edi, %%ebx\n"                            \
-                      : "=a" (res) : "0" (SYS_write), "c" (msg), "d" (len) : "edi"); res; })
-#define sysexit(c)                              \
-    asm ("xor   %%ebx, %%ebx\n"                 \
-         "int   $0x80\n"                        \
-         : : "a" (SYS_exit)); _exit(c)
-
-#  elif defined(QT_ARCH_X86_64)
-#define sysinit() (void)0
-#define syswrite(msg, len)                                              \
-    ({ int res;                                                         \
-        asm volatile ("syscall\n"                                       \
-                      : "=a" (res) : "0" (SYS_write), "D" (1), "S" (msg), "d" (len) : "rcx"); res; })
-#define sysexit(c)                              \
-    asm ("syscall\n"                            \
-         : : "a" (SYS_exit), "D" (0)); _exit(c)
-
-#  elif defined(QT_ARCH_IA64)
-#define sysinit()                                               \
-    asm volatile ("{.mlx\n"                                     \
-                  "      nop.m  0\n"                            \
-                  "      movl   r2  = @pcrel(boilerplate);;"    \
-                  "}\n"                                         \
-                  "{.mii\n"                                     \
-                  "      mov   r10 = @ltoffx(boilerplate)\n"    \
-                  "      mov   r1  = ip\n"                      \
-                  "      adds  r2  = -16, r2\n;;\n"             \
-                  "}\n"                                         \
-                  "      add   r1  = r2, r1;;\n"                \
-                  "      sub   r1  = r1, r10;;\n"               \
-                  : : : "r2", "r10")
-#define syswrite(msg, len)                                              \
-    ({ const char *_msg = msg;                                          \
-        asm ("mov    out0=%1\n"                                         \
-             "mov    out1=%2\n"                                         \
-             "mov    out2=%3\n"                                         \
-             ";;\n"                                                     \
-             "mov    r15=%0\n"                                          \
-             "break  0x100000;;\n"                                      \
-             : : "I" (SYS_write), "I" (1), "r" (_msg), "r" (len)); })
-#define sysexit(c)                                                      \
-    asm ("mov    out0=%1\n"                                             \
-         ";;\n"                                                         \
-         "mov    r15=%0\n"                                              \
-         "break  0x100000;;\n"                                          \
-         : : "I" (SYS_exit), "O" (0)); write(1, 0, 0); _exit(c)
-# else
-#define sysinit() (void)0
-#define syswrite(msg, len) (msg); (len)
-#define sysexit(c)         __builtin_exit(c)
-#  endif
-
-#define sysputs(msg) syswrite(msg, -1 + sizeof(msg))
-#define sysendl()    syswrite("\n", 1)
-#define print_qt_configure(_which)              \
-    ({const char *which = _which;               \
-        which += 12;                            \
-        int len = 0;                            \
-        while (which[len]) ++len;               \
-        syswrite(which, len); })
+extern const char qt_core_interpreter[] __attribute__((section(".interp")))
+    = "/lib/ld-linux.so.2";
 
+extern "C"
 void qt_core_init_boilerplate()
 {
-    sysinit();
-    sysputs(boilerplate);
-    sysputs("\nInstallation prefix: ");
-    print_qt_configure(qt_configure_prefix_path_str);
-    sysputs("\nLibrary path:        ");
-    print_qt_configure(qt_configure_libraries_path_str);
-    sysputs("\nInclude path:        ");
-    print_qt_configure(qt_configure_headers_path_str);
-    sysendl();
-    sysexit(0);
+    printf("This is the QtCore library version " QT_VERSION_STR "\n"
+           "Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).\n"
+           "Contact: Qt Software Information (qt-info@nokia.com)\n"
+           "\n"
+           "Build key:           " QT_BUILD_KEY "\n"
+           "Installation prefix: %s\n"
+           "Library path:        %s\n"
+           "Include path:        %s\n",
+           qt_configure_prefix_path_str + 12,
+           qt_configure_libraries_path_str + 12,
+           qt_configure_headers_path_str + 12);
+    exit(0);
 }
 
 #endif
diff --git a/src/corelib/io/qdatastream.cpp b/src/corelib/io/qdatastream.cpp
index 9990696..b203899 100644
--- a/src/corelib/io/qdatastream.cpp
+++ b/src/corelib/io/qdatastream.cpp
@@ -514,7 +514,7 @@ void QDataStream::setByteOrder(ByteOrder bo)
     \value Qt_4_2 Version 8 (Qt 4.2)
     \value Qt_4_3 Version 9 (Qt 4.3)
     \value Qt_4_4 Version 10 (Qt 4.4)
-    \value Qt_4_5 Version 10 (Qt 4.5)
+    \value Qt_4_5 Version 11 (Qt 4.5)
     \omitvalue Qt_4_6
 
     \sa setVersion(), version()
diff --git a/src/corelib/io/qdir.cpp b/src/corelib/io/qdir.cpp
index 6d75c59..b7861ba 100644
--- a/src/corelib/io/qdir.cpp
+++ b/src/corelib/io/qdir.cpp
@@ -50,6 +50,7 @@
 #include "qstring.h"
 #include "qregexp.h"
 #include "qvector.h"
+#include "qalgorithms.h"
 #ifdef QT_BUILD_CORE_LIB
 # include "qresource.h"
 #endif
@@ -190,32 +191,28 @@ QDirPrivate::~QDirPrivate()
 
 /* For sorting */
 struct QDirSortItem {
-    QString filename_cache;
-    QString suffix_cache;
+    mutable QString filename_cache;
+    mutable QString suffix_cache;
     QFileInfo item;
 };
-static int qt_cmp_si_sort_flags;
 
-#if defined(Q_C_CALLBACKS)
-extern "C" {
-#endif
 
-#ifdef Q_OS_WINCE
-static int __cdecl qt_cmp_si(const void *n1, const void *n2)
-#else
-static int qt_cmp_si(const void *n1, const void *n2)
-#endif
-{
-    if (!n1 || !n2)
-        return 0;
+class QDirSortItemComparator {
+    int qt_cmp_si_sort_flags;
+public:
+    QDirSortItemComparator(int flags) : qt_cmp_si_sort_flags(flags) {}
+    bool operator()(const QDirSortItem &, const QDirSortItem &);
+};
 
-    QDirSortItem* f1 = (QDirSortItem*)n1;
-    QDirSortItem* f2 = (QDirSortItem*)n2;
+bool QDirSortItemComparator::operator()(const QDirSortItem &n1, const QDirSortItem &n2)
+{
+    const QDirSortItem* f1 = &n1;
+    const QDirSortItem* f2 = &n2;
 
     if ((qt_cmp_si_sort_flags & QDir::DirsFirst) && (f1->item.isDir() != f2->item.isDir()))
-        return f1->item.isDir() ? -1 : 1;
+        return f1->item.isDir();
     if ((qt_cmp_si_sort_flags & QDir::DirsLast) && (f1->item.isDir() != f2->item.isDir()))
-        return f1->item.isDir() ? 1 : -1;
+        return !f1->item.isDir();
 
     int r = 0;
     int sortBy = (qt_cmp_si_sort_flags & QDir::SortByMask)
@@ -264,18 +261,11 @@ static int qt_cmp_si(const void *n1, const void *n2)
             : f1->filename_cache.compare(f2->filename_cache);
     }
 
-    if (r == 0) // Enforce an order - the order the items appear in the array
-        r = (char*)n1 - (char*)n2;
-
     if (qt_cmp_si_sort_flags & QDir::Reversed)
-        return -r;
-    return r;
+        return r > 0;
+    return r < 0;
 }
 
-#if defined(Q_C_CALLBACKS)
-}
-#endif
-
 inline void QDirPrivate::sortFileList(QDir::SortFlags sort, QStringList &l,
                                       QStringList *names, QFileInfoList *infos) const
 {
@@ -292,9 +282,8 @@ inline void QDirPrivate::sortFileList(QDir::SortFlags sort, QStringList &l,
                 path += QLatin1Char('/');
             si[i].item = QFileInfo(path + l.at(i));
         }
-        qt_cmp_si_sort_flags = sort;
         if ((sort & QDir::SortByMask) != QDir::Unsorted)
-            qsort(si, i, sizeof(si[0]), qt_cmp_si);
+            qStableSort(si, si+i, QDirSortItemComparator(sort));
         // put them back in the list(s)
         for (int j = 0; j<i; j++) {
             if(infos)
diff --git a/src/corelib/io/qfsfileengine_unix.cpp b/src/corelib/io/qfsfileengine_unix.cpp
index 0d88b06..18b92e2 100644
--- a/src/corelib/io/qfsfileengine_unix.cpp
+++ b/src/corelib/io/qfsfileengine_unix.cpp
@@ -780,7 +780,7 @@ QString QFSFileEngine::fileName(FileName file) const
 #endif
             if (len > 0) {
                 QString ret;
-                if (S_ISDIR(d->st.st_mode) && s[0] != '/') {
+                if (d->doStat() && S_ISDIR(d->st.st_mode) && s[0] != '/') {
                     QDir parent(d->filePath);
                     parent.cdUp();
                     ret = parent.path();
diff --git a/src/corelib/io/qfsfileengine_win.cpp b/src/corelib/io/qfsfileengine_win.cpp
index 522be20..63506c2 100644
--- a/src/corelib/io/qfsfileengine_win.cpp
+++ b/src/corelib/io/qfsfileengine_win.cpp
@@ -346,8 +346,15 @@ bool QFSFileEnginePrivate::uncListSharesOnServer(const QString &server, QStringL
 static bool isUncRoot(const QString &server)
 {
     QString localPath = QDir::toNativeSeparators(server);
-    QStringList parts = localPath.split(QLatin1Char('\\'), QString::SkipEmptyParts);
-    return localPath.startsWith(QLatin1String("\\\\")) && parts.count() <= 1;
+    if (!localPath.startsWith(QLatin1String("\\\\")))
+        return false;
+
+    int idx = localPath.indexOf(QLatin1Char('\\'), 2);
+    if (idx == -1 || idx + 1 == localPath.length())
+        return true;
+
+    localPath = localPath.right(localPath.length() - idx - 1).trimmed();
+    return localPath.isEmpty();
 }
 
 static bool isUncPath(const QString &path)
diff --git a/src/corelib/io/qtemporaryfile.cpp b/src/corelib/io/qtemporaryfile.cpp
index 6a7b067..6a9125c 100644
--- a/src/corelib/io/qtemporaryfile.cpp
+++ b/src/corelib/io/qtemporaryfile.cpp
@@ -105,100 +105,100 @@ QT_BEGIN_NAMESPACE
  */
 static int _gettemp(char *path, int *doopen, int domkdir, int slen)
 {
-	char *start, *trv, *suffp;
-	QT_STATBUF sbuf;
-	int rval;
+    char *start, *trv, *suffp;
+    QT_STATBUF sbuf;
+    int rval;
 #if defined(Q_OS_WIN)
     int pid;
 #else
-	pid_t pid;
+    pid_t pid;
 #endif
 
-	if (doopen && domkdir) {
-		errno = EINVAL;
-		return(0);
-	}
-
-	for (trv = path; *trv; ++trv)
-		;
-	trv -= slen;
-	suffp = trv;
-	--trv;
-	if (trv < path) {
-		errno = EINVAL;
-		return (0);
-	}
+    if (doopen && domkdir) {
+        errno = EINVAL;
+        return 0;
+    }
+
+    for (trv = path; *trv; ++trv)
+        ;
+    trv -= slen;
+    suffp = trv;
+    --trv;
+    if (trv < path) {
+        errno = EINVAL;
+        return 0;
+    }
 #if defined(Q_OS_WIN) && defined(_MSC_VER) && _MSC_VER >= 1400
-        pid = _getpid();
+    pid = _getpid();
 #else
-        pid = getpid();
+    pid = getpid();
 #endif
-	while (trv >= path && *trv == 'X' && pid != 0) {
-		*trv-- = (pid % 10) + '0';
-		pid /= 10;
-        }
+    while (trv >= path && *trv == 'X' && pid != 0) {
+        *trv-- = (pid % 10) + '0';
+        pid /= 10;
+    }
 
 #ifndef S_ISDIR
-#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
+#  define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
 #endif
 
-        while (trv >= path && *trv == 'X') {
-            char c;
-
-            // CHANGE arc4random() -> random()
-            pid = (qrand() & 0xffff) % (26+26);
-		if (pid < 26)
-			c = pid + 'A';
-		else
-			c = (pid - 26) + 'a';
-		*trv-- = c;
-	}
-	start = trv + 1;
-
-	/*
-	 * check the target directory; if you have six X's and it
-	 * doesn't exist this runs for a *very* long time.
-	 */
-	if (doopen || domkdir) {
-		for (;; --trv) {
-			if (trv <= path)
-				break;
-			if (*trv == '/') {
-				*trv = '\0';
+    while (trv >= path && *trv == 'X') {
+        char c;
+
+        // CHANGE arc4random() -> random()
+        pid = (qrand() & 0xffff) % (26+26);
+        if (pid < 26)
+            c = pid + 'A';
+        else
+            c = (pid - 26) + 'a';
+        *trv-- = c;
+    }
+    start = trv + 1;
+
+    /*
+     * check the target directory; if you have six X's and it
+     * doesn't exist this runs for a *very* long time.
+     */
+    if (doopen || domkdir) {
+        for (;; --trv) {
+            if (trv <= path)
+                break;
+            if (*trv == '/') {
+                *trv = '\0';
 #if defined (Q_OS_WIN) && !defined(Q_OS_WINCE)
-                                if (trv - path == 2 && path[1] == ':') {
-                                    // Special case for Windows drives
-                                    // (e.g., "C:" => "C:\").
-                                    // ### Better to use a Windows
-                                    // call for this.
-									char drive[] = "c:\\";
-                                    drive[0] = path[0];
-                                    rval = QT_STAT(drive, &sbuf);
-                                } else
+                if (trv - path == 2 && path[1] == ':') {
+                    // Special case for Windows drives
+                    // (e.g., "C:" => "C:\").
+                    // ### Better to use a Windows
+                    // call for this.
+                    char drive[] = "c:\\";
+                    drive[0] = path[0];
+                    rval = QT_STAT(drive, &sbuf);
+                } else
 #endif
-				rval = QT_STAT(path, &sbuf);
-				*trv = '/';
-				if (rval != 0)
-					return(0);
-				if (!S_ISDIR(sbuf.st_mode)) {
-					errno = ENOTDIR;
-					return(0);
-				}
-				break;
-			}
-		}
-	}
-
-	for (;;) {
-		if (doopen) {
+                    rval = QT_STAT(path, &sbuf);
+                *trv = '/';
+                if (rval != 0)
+                    return 0;
+                if (!S_ISDIR(sbuf.st_mode)) {
+                    errno = ENOTDIR;
+                    return 0;
+                }
+                break;
+            }
+        }
+    }
+
+    for (;;) {
+        if (doopen) {
 #if defined(Q_OS_WIN) && !defined(Q_OS_WINCE) && defined(_MSC_VER) && _MSC_VER >= 1400
-                        if (_sopen_s(doopen, path, QT_OPEN_CREAT|O_EXCL|QT_OPEN_RDWR|QT_OPEN_BINARY
-#ifdef QT_LARGEFILE_SUPPORT
-                                     |QT_OPEN_LARGEFILE
-#endif
-                                     , _SH_DENYNO, _S_IREAD | _S_IWRITE)== 0)
-#else
-#if defined(Q_OS_WINCE)
+            if (_sopen_s(doopen, path, QT_OPEN_CREAT|O_EXCL|QT_OPEN_RDWR|QT_OPEN_BINARY
+#  ifdef QT_LARGEFILE_SUPPORT
+                                       |QT_OPEN_LARGEFILE
+#  endif
+                         , _SH_DENYNO, _S_IREAD | _S_IWRITE)== 0)
+#else // WIN && !CE
+#  if defined(Q_OS_WINCE)
             QString targetPath;
             if (QDir::isAbsolutePath(QString::fromLatin1(path)))
                 targetPath = QLatin1String(path);
@@ -207,72 +207,82 @@ static int _gettemp(char *path, int *doopen, int domkdir, int slen)
 
             if ((*doopen =
                 QT_OPEN(targetPath.toLocal8Bit(), O_CREAT|O_EXCL|O_RDWR
-#else
-                        if ((*doopen =
-                            open(path, QT_OPEN_CREAT|O_EXCL|QT_OPEN_RDWR
-#endif
-#ifdef QT_LARGEFILE_SUPPORT
-                                 |QT_OPEN_LARGEFILE
-#endif
+#  else // CE
+            if ((*doopen =
+                open(path, QT_OPEN_CREAT|O_EXCL|QT_OPEN_RDWR
+#  endif
+#  ifdef QT_LARGEFILE_SUPPORT
+                           |QT_OPEN_LARGEFILE
+#  endif
 #  if defined(Q_OS_WINCE)
-                                                             |_O_BINARY
+                           |_O_BINARY
 #  elif defined(Q_OS_WIN)
-                                 |O_BINARY
+                           |O_BINARY
+#  endif
+#  ifdef O_CLOEXEC
+                           // supported on Linux >= 2.6.23; avoids one extra system call
+                           // and avoids a race condition: if another thread forks, we could
+                           // end up leaking a file descriptor...
+                           |O_CLOEXEC
 #  endif
-                                 , 0600)) >= 0)
+                     , 0600)) >= 0)
+#endif // WIN && !CE
+            {
+#if defined(Q_OS_UNIX) && !defined(O_CLOEXEC)
+                fcntl(*doopen, F_SETFD, FD_CLOEXEC);
 #endif
-
-                                return(1);
-                        if (errno != EEXIST)
-                                return(0);
-                } else if (domkdir) {
+                return 1;
+            }
+            if (errno != EEXIST)
+                return 0;
+        } else if (domkdir) {
 #ifdef Q_OS_WIN
-                    if (QT_MKDIR(path) == 0)
+            if (QT_MKDIR(path) == 0)
 #else
-                    if (mkdir(path, 0700) == 0)
+            if (mkdir(path, 0700) == 0)
 #endif
-                                return(1);
-                        if (errno != EEXIST)
-                                return(0);
-            }
+                return 1;
+            if (errno != EEXIST)
+                return 0;
+        }
 #ifndef Q_OS_WIN
-            else if (QT_LSTAT(path, &sbuf))
-			return(errno == ENOENT ? 1 : 0);
+        else if (QT_LSTAT(path, &sbuf))
+            return (errno == ENOENT) ? 1 : 0;
 #else
-            if (!QFileInfo(QLatin1String(path)).exists())
-                return 1;
+        if (!QFileInfo(QLatin1String(path)).exists())
+            return 1;
 #endif
 
-                /* tricky little algorwwithm for backward compatibility */
-                for (trv = start;;) {
-                        if (!*trv)
-                                return (0);
-                        if (*trv == 'Z') {
-                                if (trv == suffp)
-                                        return (0);
-                                *trv++ = 'a';
-                        } else {
-                                if (isdigit(*trv))
-                                        *trv = 'a';
-                                else if (*trv == 'z')	/* inc from z to A */
-                                        *trv = 'A';
-                                else {
-                                        if (trv == suffp)
-                                                return (0);
-                                        ++*trv;
-                                }
-                                break;
-                        }
+        /* tricky little algorwwithm for backward compatibility */
+        for (trv = start;;) {
+            if (!*trv)
+                return 0;
+            if (*trv == 'Z') {
+                if (trv == suffp)
+                    return 0;
+                *trv++ = 'a';
+            } else {
+                if (isdigit(*trv))
+                    *trv = 'a';
+                else if (*trv == 'z') /* inc from z to A */
+                    *trv = 'A';
+                else {
+                    if (trv == suffp)
+                        return 0;
+                    ++*trv;
                 }
+                break;
+            }
         }
-        /*NOTREACHED*/
+    }
+    /*NOTREACHED*/
 }
 
 #ifndef Q_WS_WIN
 static int qt_mkstemps(char *path, int slen)
 {
-        int fd = 0;
-        return (_gettemp(path, &fd, 0, slen) ? fd : -1);
+    int fd = 0;
+    return (_gettemp(path, &fd, 0, slen) ? fd : -1);
 }
 #endif
 
@@ -284,6 +294,8 @@ public:
     QTemporaryFileEngine(const QString &file) : QFSFileEngine(file) { }
     ~QTemporaryFileEngine();
 
+    void setFileName(const QString &file);
+
     bool open(QIODevice::OpenMode flags);
     bool remove();
     bool close();
@@ -294,6 +306,13 @@ QTemporaryFileEngine::~QTemporaryFileEngine()
     QFSFileEngine::close();
 }
 
+void QTemporaryFileEngine::setFileName(const QString &file)
+{
+    // Really close the file, so we don't leak
+    QFSFileEngine::close();
+    QFSFileEngine::setFileName(file);
+}
+
 bool QTemporaryFileEngine::open(QIODevice::OpenMode openMode)
 {
     Q_D(QFSFileEngine);
diff --git a/src/corelib/io/qtextstream.cpp b/src/corelib/io/qtextstream.cpp
index ed9d0aa..1167671 100644
--- a/src/corelib/io/qtextstream.cpp
+++ b/src/corelib/io/qtextstream.cpp
@@ -67,8 +67,10 @@ static const int QTEXTSTREAM_BUFFERSIZE = 16384;
     \snippet doc/src/snippets/code/src_corelib_io_qtextstream.cpp 1
 
     Note that you cannot use QTextStream::atEnd(), which returns true when you
-    have reached the end of the data stream, with stdin.
-
+    have reached the end of the data stream, with stdin. The reason for this is
+    that as long as stdin doesn't give any input to the QTextStream, \c atEnd()
+    will return true even if the stdin is open and waiting for more characters.
+    
     Besides using QTextStream's constructors, you can also set the
     device or string QTextStream operates on by calling setDevice() or
     setString(). You can seek to a position by calling seek(), and
diff --git a/src/corelib/kernel/qcoreevent.cpp b/src/corelib/kernel/qcoreevent.cpp
index fa2e7b0..d6b0174 100644
--- a/src/corelib/kernel/qcoreevent.cpp
+++ b/src/corelib/kernel/qcoreevent.cpp
@@ -260,6 +260,7 @@ QT_BEGIN_NAMESPACE
     \omitvalue ApplicationActivated
     \omitvalue ApplicationDeactivated
     \omitvalue MacGLWindowChange
+    \omitvalue MacGLClearDrawable
     \omitvalue NetworkReplyUpdated
     \omitvalue FutureCallOut
     \omitvalue CocoaRequestModal
diff --git a/src/corelib/kernel/qeventdispatcher_glib.cpp b/src/corelib/kernel/qeventdispatcher_glib.cpp
index 3fd768a..3c5b277 100644
--- a/src/corelib/kernel/qeventdispatcher_glib.cpp
+++ b/src/corelib/kernel/qeventdispatcher_glib.cpp
@@ -42,6 +42,7 @@
 #include "qeventdispatcher_glib_p.h"
 #include "qeventdispatcher_unix_p.h"
 
+#include <private/qmutexpool_p.h>
 #include <private/qthread_p.h>
 
 #include "qcoreapplication.h"
@@ -224,6 +225,8 @@ QEventDispatcherGlibPrivate::QEventDispatcherGlibPrivate(GMainContext *context)
     : mainContext(context)
 {
     if (qgetenv("QT_NO_THREADED_GLIB").isEmpty()) {
+        static int dummyValue = 0; // only used for its address
+        QMutexLocker locker(QMutexPool::instance()->get(&dummyValue));
         if (!g_thread_supported())
             g_thread_init(NULL);
     }
diff --git a/src/corelib/kernel/qeventloop.cpp b/src/corelib/kernel/qeventloop.cpp
index 92bdf73..600f787 100644
--- a/src/corelib/kernel/qeventloop.cpp
+++ b/src/corelib/kernel/qeventloop.cpp
@@ -188,8 +188,9 @@ int QEventLoop::exec(ProcessEventsFlags flags)
     d->threadData->eventLoops.push(this);
 
     // remove posted quit events when entering a new event loop
-    if (qApp->thread() == thread())
-        QCoreApplication::removePostedEvents(qApp, QEvent::Quit);
+    QCoreApplication *app = QCoreApplication::instance();
+    if (app && app->thread() == thread())
+        QCoreApplication::removePostedEvents(app, QEvent::Quit);
 
 #if defined(QT_NO_EXCEPTIONS)
     while (!d->exit)
diff --git a/src/corelib/statemachine/qabstractstate.cpp b/src/corelib/statemachine/qabstractstate.cpp
index cc6f0f9..3f84314 100644
--- a/src/corelib/statemachine/qabstractstate.cpp
+++ b/src/corelib/statemachine/qabstractstate.cpp
@@ -101,16 +101,16 @@ QStateMachine *QAbstractStatePrivate::machine() const
     return 0;
 }
 
-void QAbstractStatePrivate::callOnEntry()
+void QAbstractStatePrivate::callOnEntry(QEvent *e)
 {
     Q_Q(QAbstractState);
-    q->onEntry();
+    q->onEntry(e);
 }
 
-void QAbstractStatePrivate::callOnExit()
+void QAbstractStatePrivate::callOnExit(QEvent *e)
 {
     Q_Q(QAbstractState);
-    q->onExit();
+    q->onExit(e);
 }
 
 void QAbstractStatePrivate::emitEntered()
@@ -190,17 +190,19 @@ QStateMachine *QAbstractState::machine() const
 }
 
 /*!
-  \fn QAbstractState::onExit()
+  \fn QAbstractState::onExit(QEvent *event)
 
-  This function is called when the state is exited.  Reimplement this function
-  to perform custom processing when the state is exited.
+  This function is called when the state is exited. The given \a event is what
+  caused the state to be exited. Reimplement this function to perform custom
+  processing when the state is exited.
 */
 
 /*!
-  \fn QAbstractState::onEntry()
+  \fn QAbstractState::onEntry(QEvent *event)
 
-  This function is called when the state is entered. Reimplement this function
-  to perform custom processing when the state is entered.
+  This function is called when the state is entered. The given \a event is
+  what caused the state to be entered. Reimplement this function to perform
+  custom processing when the state is entered.
 */
 
 /*!
diff --git a/src/corelib/statemachine/qabstractstate.h b/src/corelib/statemachine/qabstractstate.h
index 30a68ff..f6b4b21 100644
--- a/src/corelib/statemachine/qabstractstate.h
+++ b/src/corelib/statemachine/qabstractstate.h
@@ -70,8 +70,8 @@ Q_SIGNALS:
 protected:
     QAbstractState(QState *parent = 0);
 
-    virtual void onEntry() = 0;
-    virtual void onExit() = 0;
+    virtual void onEntry(QEvent *event) = 0;
+    virtual void onExit(QEvent *event) = 0;
 
     bool event(QEvent *e);
 
diff --git a/src/corelib/statemachine/qabstractstate_p.h b/src/corelib/statemachine/qabstractstate_p.h
index bbe12d6..6c09696 100644
--- a/src/corelib/statemachine/qabstractstate_p.h
+++ b/src/corelib/statemachine/qabstractstate_p.h
@@ -77,8 +77,8 @@ public:
 
     QStateMachine *machine() const;
 
-    void callOnEntry();
-    void callOnExit();
+    void callOnEntry(QEvent *e);
+    void callOnExit(QEvent *e);
 
     void emitEntered();
     void emitExited();
diff --git a/src/corelib/statemachine/qabstracttransition.cpp b/src/corelib/statemachine/qabstracttransition.cpp
index 5fa1742..6ddb416 100644
--- a/src/corelib/statemachine/qabstracttransition.cpp
+++ b/src/corelib/statemachine/qabstracttransition.cpp
@@ -131,10 +131,10 @@ bool QAbstractTransitionPrivate::callEventTest(QEvent *e) const
     return q->eventTest(e);
 }
 
-void QAbstractTransitionPrivate::callOnTransition()
+void QAbstractTransitionPrivate::callOnTransition(QEvent *e)
 {
     Q_Q(QAbstractTransition);
-    q->onTransition();
+    q->onTransition(e);
 }
 
 QState *QAbstractTransitionPrivate::sourceState() const
@@ -179,8 +179,7 @@ QAbstractTransition::QAbstractTransition(const QList<QAbstractState*> &targets,
 #ifdef QT_STATEMACHINE_SOLUTION
     d_ptr->q_ptr = this;
 #endif
-    Q_D(QAbstractTransition);
-    d->targetStates = targets;
+    setTargetStates(targets);
 }
 
 /*!
@@ -220,8 +219,7 @@ QAbstractTransition::QAbstractTransition(QAbstractTransitionPrivate &dd,
 #ifdef QT_STATEMACHINE_SOLUTION
     d_ptr->q_ptr = this;
 #endif
-    Q_D(QAbstractTransition);
-    d->targetStates = targets;
+    setTargetStates(targets);
 }
 
 /*!
@@ -265,7 +263,7 @@ void QAbstractTransition::setTargetState(QAbstractState* target)
     if (!target)
         d->targetStates.clear();
     else
-        d->targetStates = QList<QAbstractState*>() << target;
+        setTargetStates(QList<QAbstractState*>() << target);
 }
 
 /*!
@@ -275,7 +273,13 @@ void QAbstractTransition::setTargetState(QAbstractState* target)
 QList<QAbstractState*> QAbstractTransition::targetStates() const
 {
     Q_D(const QAbstractTransition);
-    return d->targetStates;
+    QList<QAbstractState*> result;
+    for (int i = 0; i < d->targetStates.size(); ++i) {
+        QAbstractState *target = d->targetStates.at(i);
+        if (target)
+            result.append(target);
+    }
+    return result;
 }
 
 /*!
@@ -284,7 +288,22 @@ QList<QAbstractState*> QAbstractTransition::targetStates() const
 void QAbstractTransition::setTargetStates(const QList<QAbstractState*> &targets)
 {
     Q_D(QAbstractTransition);
-    d->targetStates = targets;
+
+    for (int i=0; i<targets.size(); ++i) {
+        QAbstractState *target = targets.at(i);
+        if (!target) {
+            qWarning("QAbstractTransition::setTargetStates: target state(s) cannot be null");
+            return;
+        }
+        if (target->machine() != 0 && target->machine()->rootState() == target) {
+            qWarning("QAbstractTransition::setTargetStates: root state cannot be target of transition");
+            return;
+        }
+    }
+
+    d->targetStates.clear();
+    for (int i = 0; i < targets.size(); ++i)
+        d->targetStates.append(targets.at(i));
 }
 
 /*!
@@ -353,10 +372,11 @@ QList<QAbstractAnimation*> QAbstractTransition::animations() const
 */
 
 /*!
-  \fn QAbstractTransition::onTransition()
+  \fn QAbstractTransition::onTransition(QEvent *event)
 
-  This function is called when the transition is triggered.  Reimplement this
-  function to perform custom processing when the transition is triggered.
+  This function is called when the transition is triggered. The given \a event
+  is what caused the transition to trigger. Reimplement this function to
+  perform custom processing when the transition is triggered.
 */
 
 /*!
diff --git a/src/corelib/statemachine/qabstracttransition.h b/src/corelib/statemachine/qabstracttransition.h
index 79ab808..e207944 100644
--- a/src/corelib/statemachine/qabstracttransition.h
+++ b/src/corelib/statemachine/qabstracttransition.h
@@ -90,7 +90,7 @@ public:
 protected:
     virtual bool eventTest(QEvent *event) const = 0;
 
-    virtual void onTransition() = 0;
+    virtual void onTransition(QEvent *event) = 0;
 
     bool event(QEvent *e);
 
diff --git a/src/corelib/statemachine/qabstracttransition_p.h b/src/corelib/statemachine/qabstracttransition_p.h
index a48a09c..eb0ec21 100644
--- a/src/corelib/statemachine/qabstracttransition_p.h
+++ b/src/corelib/statemachine/qabstracttransition_p.h
@@ -58,6 +58,7 @@
 #endif
 
 #include <QtCore/qlist.h>
+#include <QtCore/qpointer.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -79,11 +80,11 @@ public:
     static const QAbstractTransitionPrivate *get(const QAbstractTransition *q);
 
     bool callEventTest(QEvent *e) const;
-    void callOnTransition();
+    void callOnTransition(QEvent *e);
     QState *sourceState() const;
     QStateMachine *machine() const;
 
-    QList<QAbstractState*> targetStates;
+    QList<QPointer<QAbstractState> > targetStates;
 
 #ifndef QT_NO_ANIMATION
     QList<QAbstractAnimation*> animations;
diff --git a/src/corelib/statemachine/qeventtransition.cpp b/src/corelib/statemachine/qeventtransition.cpp
index cbd03bd..86259e4 100644
--- a/src/corelib/statemachine/qeventtransition.cpp
+++ b/src/corelib/statemachine/qeventtransition.cpp
@@ -270,8 +270,9 @@ bool QEventTransition::eventTest(QEvent *event) const
 /*!
   \reimp
 */
-void QEventTransition::onTransition()
+void QEventTransition::onTransition(QEvent *event)
 {
+    Q_UNUSED(event);
 }
 
 /*!
diff --git a/src/corelib/statemachine/qeventtransition.h b/src/corelib/statemachine/qeventtransition.h
index 484602c..a128cee 100644
--- a/src/corelib/statemachine/qeventtransition.h
+++ b/src/corelib/statemachine/qeventtransition.h
@@ -78,7 +78,7 @@ public:
 
 protected:
     bool eventTest(QEvent *event) const;
-    void onTransition();
+    void onTransition(QEvent *event);
 
     bool event(QEvent *e);
 
diff --git a/src/corelib/statemachine/qfinalstate.cpp b/src/corelib/statemachine/qfinalstate.cpp
index 6a1b608..0980336 100644
--- a/src/corelib/statemachine/qfinalstate.cpp
+++ b/src/corelib/statemachine/qfinalstate.cpp
@@ -55,9 +55,9 @@ QT_BEGIN_NAMESPACE
   A final state is used to communicate that (part of) a QStateMachine has
   finished its work. When a final top-level state is entered, the state
   machine's \l{QStateMachine::finished()}{finished}() signal is emitted. In
-  general, when a final substate (a child of a QState) is entered, a
-  QStateFinishedEvent is generated for the final state's parent
-  state. QFinalState is part of \l{The State Machine Framework}.
+  general, when a final substate (a child of a QState) is entered, the parent
+  state's \l{QState::finished()}{finished}() signal is emitted.  QFinalState
+  is part of \l{The State Machine Framework}.
 
   To use a final state, you create a QFinalState object and add a transition
   to it from another state. Example:
@@ -76,6 +76,8 @@ QT_BEGIN_NAMESPACE
   machine.setInitialState(s1);
   machine.start();
   \endcode
+
+  \sa QStateMachine::finished(), QState::finished()
 */
 
 class QFinalStatePrivate : public QAbstractStatePrivate
@@ -108,15 +110,17 @@ QFinalState::~QFinalState()
 /*!
   \reimp
 */
-void QFinalState::onEntry()
+void QFinalState::onEntry(QEvent *event)
 {
+    Q_UNUSED(event);
 }
 
 /*!
   \reimp
 */
-void QFinalState::onExit()
+void QFinalState::onExit(QEvent *event)
 {
+    Q_UNUSED(event);
 }
 
 /*!
diff --git a/src/corelib/statemachine/qfinalstate.h b/src/corelib/statemachine/qfinalstate.h
index 726a399..eb8aa0f 100644
--- a/src/corelib/statemachine/qfinalstate.h
+++ b/src/corelib/statemachine/qfinalstate.h
@@ -63,8 +63,8 @@ public:
     ~QFinalState();
 
 protected:
-    void onEntry();
-    void onExit();
+    void onEntry(QEvent *event);
+    void onExit(QEvent *event);
 
     bool event(QEvent *e);
 
diff --git a/src/corelib/statemachine/qhistorystate.cpp b/src/corelib/statemachine/qhistorystate.cpp
index 4e3db08..d1b2391 100644
--- a/src/corelib/statemachine/qhistorystate.cpp
+++ b/src/corelib/statemachine/qhistorystate.cpp
@@ -58,9 +58,8 @@ QT_BEGIN_NAMESPACE
   other child states of the parent state. QHistoryState is part of \l{The
   State Machine Framework}.
 
-  Use QState::addHistoryState() to construct a history state. Use the
-  setDefaultState() function to set the state that should be entered if the
-  parent state has never been entered.  Example:
+  Use the setDefaultState() function to set the state that should be entered
+  if the parent state has never been entered.  Example:
 
   \code
   QStateMachine machine;
@@ -69,7 +68,7 @@ QT_BEGIN_NAMESPACE
   QState *s11 = new QState(s1);
   QState *s12 = new QState(s1);
 
-  QState *s1h = s1->addHistoryState();
+  QHistoryState *s1h = new QHistoryState(s1);
   s1h->setDefaultState(s11);
 
   machine.addState(s1);
@@ -83,6 +82,9 @@ QT_BEGIN_NAMESPACE
   // state if s1 has never been entered.
   s1->addTransition(button, SIGNAL(clicked()), s1h);
   \endcode
+
+  By default a history state is shallow, meaning that it won't remember nested
+  states. This can be configured through the historyType property.
 */
 
 /*!
@@ -95,6 +97,8 @@ QT_BEGIN_NAMESPACE
   \property QHistoryState::historyType
 
   \brief the type of history that this history state records
+
+  The default value of this property is QHistoryState::ShallowHistory.
 */
 
 /*!
@@ -200,15 +204,17 @@ void QHistoryState::setHistoryType(HistoryType type)
 /*!
   \reimp
 */
-void QHistoryState::onEntry()
+void QHistoryState::onEntry(QEvent *event)
 {
+    Q_UNUSED(event);
 }
 
 /*!
   \reimp
 */
-void QHistoryState::onExit()
+void QHistoryState::onExit(QEvent *event)
 {
+    Q_UNUSED(event);
 }
 
 /*!
diff --git a/src/corelib/statemachine/qhistorystate.h b/src/corelib/statemachine/qhistorystate.h
index c7648bc..d0f75de 100644
--- a/src/corelib/statemachine/qhistorystate.h
+++ b/src/corelib/statemachine/qhistorystate.h
@@ -78,8 +78,8 @@ public:
     void setHistoryType(HistoryType type);
 
 protected:
-    void onEntry();
-    void onExit();
+    void onEntry(QEvent *event);
+    void onExit(QEvent *event);
 
     bool event(QEvent *e);
 
diff --git a/src/corelib/statemachine/qsignaltransition.cpp b/src/corelib/statemachine/qsignaltransition.cpp
index e9e248f..d5833bd 100644
--- a/src/corelib/statemachine/qsignaltransition.cpp
+++ b/src/corelib/statemachine/qsignaltransition.cpp
@@ -245,8 +245,9 @@ bool QSignalTransition::eventTest(QEvent *event) const
 /*!
   \reimp
 */
-void QSignalTransition::onTransition()
+void QSignalTransition::onTransition(QEvent *event)
 {
+    Q_UNUSED(event);
 }
 
 /*!
diff --git a/src/corelib/statemachine/qsignaltransition.h b/src/corelib/statemachine/qsignaltransition.h
index b8e8fc6..98a9ae7 100644
--- a/src/corelib/statemachine/qsignaltransition.h
+++ b/src/corelib/statemachine/qsignaltransition.h
@@ -77,7 +77,7 @@ public:
 
 protected:
     bool eventTest(QEvent *event) const;
-    void onTransition();
+    void onTransition(QEvent *event);
 
     bool event(QEvent *e);
 
diff --git a/src/corelib/statemachine/qstate.cpp b/src/corelib/statemachine/qstate.cpp
index 2d59ab8..f1528b8 100644
--- a/src/corelib/statemachine/qstate.cpp
+++ b/src/corelib/statemachine/qstate.cpp
@@ -68,22 +68,30 @@ QT_BEGIN_NAMESPACE
   The assignProperty() function is used for defining property assignments that
   should be performed when a state is entered.
 
+  Top-level states must be passed QStateMachine::rootState() as their parent
+  state, or added to a state machine using QStateMachine::addState().
+
   \section1 States with Child States
 
-  For non-parallel state groups, the setInitialState() function must be called
-  to set the initial state. The child states are mutually exclusive states,
-  and the state machine needs to know which child state to enter when the
-  parent state is the target of a transition.
+  The childMode property determines how child states are treated. For
+  non-parallel state groups, the setInitialState() function must be called to
+  set the initial state. The child states are mutually exclusive states, and
+  the state machine needs to know which child state to enter when the parent
+  state is the target of a transition.
+
+  The state emits the QState::finished() signal when a final child state
+  (QFinalState) is entered.
 
   The setErrorState() sets the state's error state. The error state is the
   state that the state machine will transition to if an error is detected when
   attempting to enter the state (e.g. because no initial state has been set).
+
 */
 
 /*!
     \property QState::initialState
 
-    \brief the initial state of this state
+    \brief the initial state of this state (one of its child states)
 */
 
 /*!
@@ -96,6 +104,8 @@ QT_BEGIN_NAMESPACE
     \property QState::childMode
 
     \brief the child mode of this state
+
+    The default value of this property is QState::ExclusiveStates.
 */
 
 /*!
@@ -235,6 +245,10 @@ void QState::assignProperty(QObject *object, const char *name,
                             const QVariant &value)
 {
     Q_D(QState);
+    if (!object) {
+        qWarning("QState::assignProperty: cannot assign property '%s' of null object", name);
+        return;
+    }
     for (int i = 0; i < d->propertyAssignments.size(); ++i) {
         QPropertyAssignment &assn = d->propertyAssignments[i];
         if ((assn.object == object) && (assn.propertyName == name)) {
@@ -266,11 +280,15 @@ QAbstractState *QState::errorState() const
 void QState::setErrorState(QAbstractState *state)
 {
     Q_D(QState);
-    if (state != 0 && QAbstractStatePrivate::get(state)->machine() != d->machine()) {
+    if (state != 0 && state->machine() != machine()) {
         qWarning("QState::setErrorState: error state cannot belong "
                  "to a different state machine");
         return;
     }
+    if (state != 0 && state->machine() != 0 && state->machine()->rootState() == state) {
+        qWarning("QStateMachine::setErrorState: root state cannot be error state");
+        return;
+    }
 
     d->errorState = state;
 }
@@ -287,7 +305,14 @@ QAbstractTransition *QState::addTransition(QAbstractTransition *transition)
         qWarning("QState::addTransition: cannot add null transition");
         return 0;
     }
-    const QList<QAbstractState*> &targets = QAbstractTransitionPrivate::get(transition)->targetStates;
+
+    // machine() will always be non-null for root state
+    if (machine() != 0 && machine()->rootState() == this) {
+        qWarning("QState::addTransition: cannot add transition from root state");
+        return 0;
+    }
+
+    const QList<QPointer<QAbstractState> > &targets = QAbstractTransitionPrivate::get(transition)->targetStates;
     for (int i = 0; i < targets.size(); ++i) {
         QAbstractState *t = targets.at(i);
         if (!t) {
@@ -302,6 +327,8 @@ QAbstractTransition *QState::addTransition(QAbstractTransition *transition)
         }
     }
     transition->setParent(this);
+    if (machine() != 0 && machine()->configuration().contains(this))
+        QStateMachinePrivate::get(machine())->registerTransitions(this);
     return transition;
 }
 
@@ -321,6 +348,15 @@ QSignalTransition *QState::addTransition(QObject *sender, const char *signal,
         qWarning("QState::addTransition: signal cannot be null");
         return 0;
     }
+    if (!target) {
+        qWarning("QState::addTransition: cannot add transition to null state");
+        return 0;
+    }
+    if (*signal && sender->metaObject()->indexOfSignal(signal+1) == -1) {
+        qWarning("QState::addTransition: no such signal %s::%s",
+                 sender->metaObject()->className(), signal+1);
+        return 0;
+    }
     QSignalTransition *trans = new QSignalTransition(sender, signal, QList<QAbstractState*>() << target);
     addTransition(trans);
     return trans;
@@ -335,7 +371,7 @@ public:
     UnconditionalTransition(QAbstractState *target)
         : QAbstractTransition(QList<QAbstractState*>() << target) {}
 protected:
-    void onTransition() {}
+    void onTransition(QEvent *) {}
     bool eventTest(QEvent *) const { return true; }
 };
 
@@ -347,9 +383,12 @@ protected:
 */
 QAbstractTransition *QState::addTransition(QAbstractState *target)
 {
+    if (!target) {
+        qWarning("QState::addTransition: cannot add transition to null state");
+        return 0;
+    }
     UnconditionalTransition *trans = new UnconditionalTransition(target);
-    addTransition(trans);
-    return trans;
+    return addTransition(trans);
 }
 
 /*!
@@ -380,15 +419,17 @@ void QState::removeTransition(QAbstractTransition *transition)
 /*!
   \reimp
 */
-void QState::onEntry()
+void QState::onEntry(QEvent *event)
 {
+    Q_UNUSED(event);
 }
 
 /*!
   \reimp
 */
-void QState::onExit()
+void QState::onExit(QEvent *event)
 {
+    Q_UNUSED(event);
 }
 
 /*!
@@ -450,6 +491,8 @@ bool QState::event(QEvent *e)
   \fn QState::finished()
 
   This signal is emitted when a final child state of this state is entered.
+
+  \sa QFinalState
 */
 
 /*!
diff --git a/src/corelib/statemachine/qstate.h b/src/corelib/statemachine/qstate.h
index 9faef26..73955d7 100644
--- a/src/corelib/statemachine/qstate.h
+++ b/src/corelib/statemachine/qstate.h
@@ -97,8 +97,8 @@ Q_SIGNALS:
     void polished();
 
 protected:
-    void onEntry();
-    void onExit();
+    void onEntry(QEvent *event);
+    void onExit(QEvent *event);
 
     bool event(QEvent *e);
 
diff --git a/src/corelib/statemachine/qstatemachine.cpp b/src/corelib/statemachine/qstatemachine.cpp
index 9060f0e..40a465a 100644
--- a/src/corelib/statemachine/qstatemachine.cpp
+++ b/src/corelib/statemachine/qstatemachine.cpp
@@ -163,6 +163,8 @@ QT_BEGIN_NAMESPACE
     \property QStateMachine::initialState
 
     \brief the initial state of this state machine
+
+    The initial state must be one of the rootState()'s child states.
 */
 
 /*!
@@ -181,6 +183,9 @@ QT_BEGIN_NAMESPACE
     \property QStateMachine::globalRestorePolicy
 
     \brief the restore policy for states of this state machine.
+
+    The default value of this property is
+    QStateMachine::DoNotRestoreProperties.
 */
 
 #ifndef QT_NO_ANIMATION
@@ -188,6 +193,10 @@ QT_BEGIN_NAMESPACE
     \property QStateMachine::animationsEnabled
 
     \brief whether animations are enabled
+
+    The default value of this property is true.
+
+    \sa QAbstractTransition::addAnimation()
 */
 #endif
 
@@ -369,18 +378,18 @@ QSet<QAbstractTransition*> QStateMachinePrivate::selectTransitions(QEvent *event
     return enabledTransitions;
 }
 
-void QStateMachinePrivate::microstep(const QList<QAbstractTransition*> &enabledTransitions)
+void QStateMachinePrivate::microstep(QEvent *event, const QList<QAbstractTransition*> &enabledTransitions)
 {
 #ifdef QSTATEMACHINE_DEBUG
     qDebug() << q_func() << ": begin microstep( enabledTransitions:" << enabledTransitions << ")";
     qDebug() << q_func() << ": configuration before exiting states:" << configuration;
 #endif
-    QList<QAbstractState*> exitedStates = exitStates(enabledTransitions);
+    QList<QAbstractState*> exitedStates = exitStates(event, enabledTransitions);
 #ifdef QSTATEMACHINE_DEBUG
     qDebug() << q_func() << ": configuration after exiting states:" << configuration;
 #endif
-    executeTransitionContent(enabledTransitions);
-    QList<QAbstractState*> enteredStates = enterStates(enabledTransitions);
+    executeTransitionContent(event, enabledTransitions);
+    QList<QAbstractState*> enteredStates = enterStates(event, enabledTransitions);
     applyProperties(enabledTransitions, exitedStates, enteredStates);
 #ifdef QSTATEMACHINE_DEBUG
     qDebug() << q_func() << ": configuration after entering states:" << configuration;
@@ -388,7 +397,7 @@ void QStateMachinePrivate::microstep(const QList<QAbstractTransition*> &enabledT
 #endif
 }
 
-QList<QAbstractState*> QStateMachinePrivate::exitStates(const QList<QAbstractTransition*> &enabledTransitions)
+QList<QAbstractState*> QStateMachinePrivate::exitStates(QEvent *event, const QList<QAbstractTransition*> &enabledTransitions)
 {
 //    qDebug() << "exitStates(" << enabledTransitions << ")";
     QSet<QAbstractState*> statesToExit;
@@ -400,6 +409,15 @@ QList<QAbstractState*> QStateMachinePrivate::exitStates(const QList<QAbstractTra
             continue;
         lst.prepend(t->sourceState());
         QAbstractState *lca = findLCA(lst);
+        if (lca == 0) {
+            setError(QStateMachine::NoCommonAncestorForTransitionError, t->sourceState());
+            lst = pendingErrorStates.toList();
+            lst.prepend(t->sourceState());
+            
+            lca = findLCA(lst);
+            Q_ASSERT(lca != 0);
+        }
+
         {
             QSet<QAbstractState*>::const_iterator it;
             for (it = configuration.constBegin(); it != configuration.constEnd(); ++it) {
@@ -440,25 +458,25 @@ QList<QAbstractState*> QStateMachinePrivate::exitStates(const QList<QAbstractTra
 #ifdef QSTATEMACHINE_DEBUG
         qDebug() << q_func() << ": exiting" << s;
 #endif
-        QAbstractStatePrivate::get(s)->callOnExit();
+        QAbstractStatePrivate::get(s)->callOnExit(event);
         configuration.remove(s);
         QAbstractStatePrivate::get(s)->emitExited();
     }
     return statesToExit_sorted;
 }
 
-void QStateMachinePrivate::executeTransitionContent(const QList<QAbstractTransition*> &enabledTransitions)
+void QStateMachinePrivate::executeTransitionContent(QEvent *event, const QList<QAbstractTransition*> &enabledTransitions)
 {
     for (int i = 0; i < enabledTransitions.size(); ++i) {
         QAbstractTransition *t = enabledTransitions.at(i);
 #ifdef QSTATEMACHINE_DEBUG
         qDebug() << q_func() << ": triggering" << t;
 #endif
-        QAbstractTransitionPrivate::get(t)->callOnTransition();
+        QAbstractTransitionPrivate::get(t)->callOnTransition(event);
     }
 }
 
-QList<QAbstractState*> QStateMachinePrivate::enterStates(const QList<QAbstractTransition*> &enabledTransitions)
+QList<QAbstractState*> QStateMachinePrivate::enterStates(QEvent *event, const QList<QAbstractTransition*> &enabledTransitions)
 {
 #ifdef QSTATEMACHINE_DEBUG
     Q_Q(QStateMachine);
@@ -467,21 +485,23 @@ QList<QAbstractState*> QStateMachinePrivate::enterStates(const QList<QAbstractTr
     QSet<QAbstractState*> statesToEnter;
     QSet<QAbstractState*> statesForDefaultEntry;
 
-    for (int i = 0; i < enabledTransitions.size(); ++i) {
-        QAbstractTransition *t = enabledTransitions.at(i);
-        QList<QAbstractState*> lst = t->targetStates();
-        if (lst.isEmpty())
-            continue;
-        lst.prepend(t->sourceState());
-        QState *lca = findLCA(lst);
-        for (int j = 1; j < lst.size(); ++j) {
-            QAbstractState *s = lst.at(j);
-			addStatesToEnter(s, lca, statesToEnter, statesForDefaultEntry);
-            if (isParallel(lca)) {
-                QList<QAbstractState*> lcac = QStatePrivate::get(lca)->childStates();
-                foreach (QAbstractState* child,lcac) {
-                    if (!statesToEnter.contains(child))
-                        addStatesToEnter(child,lca,statesToEnter,statesForDefaultEntry);                    
+    if (pendingErrorStates.isEmpty()) {
+        for (int i = 0; i < enabledTransitions.size(); ++i) {
+            QAbstractTransition *t = enabledTransitions.at(i);
+            QList<QAbstractState*> lst = t->targetStates();
+            if (lst.isEmpty())
+                continue;
+            lst.prepend(t->sourceState());
+            QState *lca = findLCA(lst);
+            for (int j = 1; j < lst.size(); ++j) {
+                QAbstractState *s = lst.at(j);
+			    addStatesToEnter(s, lca, statesToEnter, statesForDefaultEntry);
+                if (isParallel(lca)) {
+                    QList<QAbstractState*> lcac = QStatePrivate::get(lca)->childStates();
+                    foreach (QAbstractState* child,lcac) {
+                        if (!statesToEnter.contains(child))
+                            addStatesToEnter(child,lca,statesToEnter,statesForDefaultEntry);                    
+                    }
                 }
             }
         }
@@ -506,7 +526,7 @@ QList<QAbstractState*> QStateMachinePrivate::enterStates(const QList<QAbstractTr
 #endif
         configuration.insert(s);
         registerTransitions(s);
-        QAbstractStatePrivate::get(s)->callOnEntry();
+        QAbstractStatePrivate::get(s)->callOnEntry(event);
         QAbstractStatePrivate::get(s)->emitEntered();
         if (statesForDefaultEntry.contains(s)) {
             // ### executeContent(s.initial.transition.children())
@@ -573,8 +593,9 @@ void QStateMachinePrivate::addStatesToEnter(QAbstractState *s, QState *root,
 			QList<QAbstractState*> hlst;
 			if (QHistoryStatePrivate::get(h)->defaultState)
 				hlst.append(QHistoryStatePrivate::get(h)->defaultState);
+
 			if (hlst.isEmpty()) {
-				setError(QStateMachine::NoDefaultStateInHistoryState, h);
+				setError(QStateMachine::NoDefaultStateInHistoryStateError, h);
 			} else {
 				for (int k = 0; k < hlst.size(); ++k) {
 					QAbstractState *s0 = hlst.at(k);
@@ -656,6 +677,20 @@ void QStateMachinePrivate::applyProperties(const QList<QAbstractTransition*> &tr
             pendingRestorables.remove(RestorableId(assn.object, assn.propertyName));
             propertyAssignmentsForState[s].append(assn);
         }
+
+        // Remove pending restorables for all parent states to avoid restoring properties
+        // before the state that assigned them is exited. If state does not explicitly 
+        // assign a property which is assigned by the parent, it inherits the parent's assignment.
+        QState *parentState = s;
+        while ((parentState = parentState->parentState()) != 0) {
+            assignments = QStatePrivate::get(parentState)->propertyAssignments;
+            for (int j=0; j<assignments.size(); ++j) {
+                const QPropertyAssignment &assn = assignments.at(j);
+                int c = pendingRestorables.remove(RestorableId(assn.object, assn.propertyName));
+                if (c > 0)
+                    propertyAssignmentsForState[s].append(assn);                
+            }
+        }
     }
     if (!pendingRestorables.isEmpty()) {
         QAbstractState *s;
@@ -675,6 +710,14 @@ void QStateMachinePrivate::applyProperties(const QList<QAbstractTransition*> &tr
             QAbstractAnimation *anim = animations.at(j);
             QObject::disconnect(anim, SIGNAL(finished()), q, SLOT(_q_animationFinished()));
             stateForAnimation.remove(anim);
+
+            // Stop the (top-level) animation.
+            // ### Stopping nested animation has weird behavior.
+            QAbstractAnimation *topLevelAnim = anim;
+            while (QAnimationGroup *group = topLevelAnim->group())
+                topLevelAnim = group;
+            topLevelAnim->stop();
+
             if (resetAnimationEndValues.contains(anim)) {
                 qobject_cast<QVariantAnimation*>(anim)->setEndValue(QVariant()); // ### generalize
                 resetAnimationEndValues.remove(anim);
@@ -698,11 +741,6 @@ void QStateMachinePrivate::applyProperties(const QList<QAbstractTransition*> &tr
             if (!found) {
                 assn.object->setProperty(assn.propertyName, assn.value);
             }
-            // Stop the (top-level) animation.
-            // ### Stopping nested animation has weird behavior.
-            while (QAnimationGroup *group = anim->group())
-                anim = group;
-            anim->stop();
         }
     }
 
@@ -921,15 +959,15 @@ QAbstractState *QStateMachinePrivate::findErrorState(QAbstractState *context)
 
     // Find error state recursively in parent hierarchy if not set explicitly for context state
     QAbstractState *errorState = 0;
+    
     QState *s = qobject_cast<QState*>(context);
-    if (s) {
+    if (s)
         errorState = s->errorState();
-        if (!errorState)
-            errorState = findErrorState(s->parentState());
-        return errorState;
-    }
 
-    return errorState;
+    if (!errorState)
+        errorState = findErrorState(context->parentState());
+    
+    return errorState;   
 }
 
 void QStateMachinePrivate::setError(QStateMachine::Error errorCode, QAbstractState *currentContext)
@@ -944,12 +982,19 @@ void QStateMachinePrivate::setError(QStateMachine::Error errorCode, QAbstractSta
                         .arg(currentContext->objectName());
 
         break;
-    case QStateMachine::NoDefaultStateInHistoryState:
+    case QStateMachine::NoDefaultStateInHistoryStateError:
         Q_ASSERT(currentContext != 0);
 
         errorString = QStateMachine::tr("Missing default state in history state '%1'")
                         .arg(currentContext->objectName());
         break;
+
+    case QStateMachine::NoCommonAncestorForTransitionError:
+        Q_ASSERT(currentContext != 0);
+
+        errorString = QStateMachine::tr("No common ancestor for targets and source of transition from state '%1'")
+                        .arg(currentContext->objectName());
+        break;
     default:
         errorString = QStateMachine::tr("Unknown error");
     };
@@ -965,10 +1010,11 @@ void QStateMachinePrivate::setError(QStateMachine::Error errorCode, QAbstractSta
         currentErrorState = initialErrorStateForRoot;
     }
 
-    if (currentErrorState) {
-        QState *lca = findLCA(QList<QAbstractState*>() << currentErrorState << currentContext);
-        addStatesToEnter(currentErrorState, lca, pendingErrorStates, pendingErrorStatesForDefaultEntry);
-    }
+    Q_ASSERT(currentErrorState != 0);
+    Q_ASSERT(currentErrorState != rootState);
+    
+    QState *lca = findLCA(QList<QAbstractState*>() << currentErrorState << currentContext);
+    addStatesToEnter(currentErrorState, lca, pendingErrorStates, pendingErrorStatesForDefaultEntry);
 }
 
 #ifndef QT_NO_ANIMATION
@@ -994,13 +1040,6 @@ QStateMachinePrivate::initializeAnimation(QAbstractAnimation *abstractAnimation,
             && prop.object == animation->targetObject()
             && prop.propertyName == animation->propertyName()) {
 
-            if (!animation->startValue().isValid()) {
-                QByteArray propertyName = animation->propertyName();
-                QVariant currentValue = animation->targetObject()->property(propertyName);
-
-                QVariantAnimationPrivate::get(animation)->setDefaultStartValue(currentValue);
-            }
-
             // Only change end value if it is undefined
             if (!animation->endValue().isValid()) {
                 animation->setEndValue(prop.value);
@@ -1053,8 +1092,8 @@ public:
     StartState(QState *parent)
         : QState(parent) {}
 protected:
-    void onEntry() {}
-    void onExit() {}
+    void onEntry(QEvent *) {}
+    void onExit(QEvent *) {}
 };
 
 class InitialTransition : public QAbstractTransition
@@ -1064,7 +1103,7 @@ public:
         : QAbstractTransition(QList<QAbstractState*>() << target) {}
 protected:
     virtual bool eventTest(QEvent *) const { return true; }
-    virtual void onTransition() {}
+    virtual void onTransition(QEvent *) {}
 };
 
 } // namespace
@@ -1099,8 +1138,9 @@ void QStateMachinePrivate::_q_start()
     start->addTransition(initialTransition);
     QList<QAbstractTransition*> transitions;
     transitions.append(initialTransition);
-    executeTransitionContent(transitions);
-    enterStates(transitions);
+    QEvent nullEvent(QEvent::None);
+    executeTransitionContent(&nullEvent, transitions);
+    enterStates(&nullEvent, transitions);
     applyProperties(transitions, QList<QAbstractState*>() << start,
                     QList<QAbstractState*>() << initial);
     delete start;
@@ -1166,7 +1206,7 @@ void QStateMachinePrivate::_q_process()
         }
         if (!enabledTransitions.isEmpty()) {
             q->beginMicrostep(e);
-            microstep(enabledTransitions.toList());
+            microstep(e, enabledTransitions.toList());
             q->endMicrostep(e);
         }
 #ifdef QSTATEMACHINE_DEBUG
@@ -1184,10 +1224,12 @@ void QStateMachinePrivate::_q_process()
         break;
     case Finished:
         state = NotRunning;
+        unregisterAllTransitions();
         emit q->finished();
         break;
     case Stopped:
         state = NotRunning;
+        unregisterAllTransitions();
         emit q->stopped();
         break;
     }
@@ -1269,8 +1311,10 @@ void QStateMachinePrivate::registerSignalTransition(QSignalTransition *transitio
                  sender->metaObject()->className(), signal.constData());
         return;
     }
-    QList<int> &connectedSignalIndexes = connections[sender];
-    if (!connectedSignalIndexes.contains(signalIndex)) {
+    QVector<int> &connectedSignalIndexes = connections[sender];
+    if (connectedSignalIndexes.size() <= signalIndex)
+        connectedSignalIndexes.resize(signalIndex+1);
+    if (connectedSignalIndexes.at(signalIndex) == 0) {
 #ifndef QT_STATEMACHINE_SOLUTION
         if (!signalEventGenerator)
             signalEventGenerator = new QSignalEventGenerator(q);
@@ -1287,8 +1331,8 @@ void QStateMachinePrivate::registerSignalTransition(QSignalTransition *transitio
 #endif
             return;
         }
-        connectedSignalIndexes.append(signalIndex);
     }
+    ++connectedSignalIndexes[signalIndex];
     QSignalTransitionPrivate::get(transition)->signalIndex = signalIndex;
 #ifdef QSTATEMACHINE_DEBUG
     qDebug() << q << ": added signal transition from" << transition->sourceState()
@@ -1303,21 +1347,38 @@ void QStateMachinePrivate::unregisterSignalTransition(QSignalTransition *transit
     if (signalIndex == -1)
         return; // not registered
 #ifndef QT_STATEMACHINE_SOLUTION
+    QSignalTransitionPrivate::get(transition)->signalIndex = -1;
     const QObject *sender = QSignalTransitionPrivate::get(transition)->sender;
-    QList<int> &connectedSignalIndexes = connections[sender];
-    Q_ASSERT(connectedSignalIndexes.contains(signalIndex));
-    Q_ASSERT(signalEventGenerator != 0);
-    bool ok = QMetaObject::disconnect(sender, signalIndex, signalEventGenerator,
-                                      signalEventGenerator->metaObject()->methodOffset());
-    if (ok) {
-        connectedSignalIndexes.removeOne(signalIndex);
-        if (connectedSignalIndexes.isEmpty())
+    QVector<int> &connectedSignalIndexes = connections[sender];
+    Q_ASSERT(connectedSignalIndexes.size() > signalIndex);
+    Q_ASSERT(connectedSignalIndexes.at(signalIndex) != 0);
+    if (--connectedSignalIndexes[signalIndex] == 0) {
+        Q_ASSERT(signalEventGenerator != 0);
+        QMetaObject::disconnect(sender, signalIndex, signalEventGenerator,
+                                signalEventGenerator->metaObject()->methodOffset());
+        int sum = 0;
+        for (int i = 0; i < connectedSignalIndexes.size(); ++i)
+            sum += connectedSignalIndexes.at(i);
+        if (sum == 0)
             connections.remove(sender);
-        QSignalTransitionPrivate::get(transition)->signalIndex = -1;
     }
 #endif
 }
 
+void QStateMachinePrivate::unregisterAllTransitions()
+{
+    {
+        QList<QSignalTransition*> transitions = qFindChildren<QSignalTransition*>(rootState);
+        for (int i = 0; i < transitions.size(); ++i)
+            unregisterSignalTransition(transitions.at(i));
+    }
+    {
+        QList<QEventTransition*> transitions = qFindChildren<QEventTransition*>(rootState);
+        for (int i = 0; i < transitions.size(); ++i)
+            unregisterEventTransition(transitions.at(i));
+    }
+}
+
 #ifndef QT_NO_STATEMACHINE_EVENTFILTER
 void QStateMachinePrivate::registerEventTransition(QEventTransition *transition)
 {
@@ -1364,8 +1425,8 @@ void QStateMachinePrivate::unregisterEventTransition(QEventTransition *transitio
 void QStateMachinePrivate::handleTransitionSignal(const QObject *sender, int signalIndex,
                                                   void **argv)
 {
-    const QList<int> &connectedSignalIndexes = connections[sender];
-    Q_ASSERT(connectedSignalIndexes.contains(signalIndex));
+    const QVector<int> &connectedSignalIndexes = connections[sender];
+    Q_ASSERT(connectedSignalIndexes.at(signalIndex) != 0);
     const QMetaObject *meta = sender->metaObject();
     QMetaMethod method = meta->method(signalIndex);
     QList<QByteArray> parameterTypes = method.parameterTypes();
@@ -1441,7 +1502,7 @@ public:
         setObjectName(QString::fromLatin1("DefaultErrorState"));
     }
 
-    void onEntry()
+    void onEntry(QEvent *)
     {
         QAbstractStatePrivate *d = QAbstractStatePrivate::get(this);
         QStateMachine *machine = d->machine();
@@ -1450,7 +1511,7 @@ public:
                  qPrintable(machine->errorString()));
     }
 
-    void onExit() {}
+    void onExit(QEvent *) {}
 };
 
 class RootState : public QState
@@ -1461,8 +1522,8 @@ public:
     {                
     }
 
-    void onEntry() {}
-    void onExit() {}
+    void onEntry(QEvent *) {}
+    void onExit(QEvent *) {}
 };
 
 } // namespace
@@ -1531,9 +1592,14 @@ void QStateMachine::setErrorState(QAbstractState *state)
     \value NoInitialStateError The machine has entered a QState with children which does not have an
            initial state set. The context of this error is the state which is missing an initial
            state.
-    \value NoDefaultStateInHistoryState The machine has entered a QHistoryState which does not have 
+    \value NoDefaultStateInHistoryStateError The machine has entered a QHistoryState which does not have 
            a default state set. The context of this error is the QHistoryState which is missing a
-           default state.          
+           default state.
+    \value NoCommonAncestorForTransitionError The machine has selected a transition whose source 
+           and targets are not part of the same tree of states, and thus are not part of the same 
+           state machine. Commonly, this could mean that one of the states has not been given 
+           any parent or added to any machine. The context of this error is the source state of 
+           the transition.
 
     \sa setErrorState()
 */
@@ -1648,7 +1714,7 @@ void QStateMachine::setInitialState(QAbstractState *state)
   If the state is already in a different machine, it will first be removed
   from its old machine, and then added to this machine.
 
-  \sa removeState(), rootState()
+  \sa removeState(), rootState(), setInitialState()
 */
 void QStateMachine::addState(QAbstractState *state)
 {
@@ -1685,10 +1751,20 @@ void QStateMachine::removeState(QAbstractState *state)
 }
 
 /*!
-  Starts this state machine.
-  The machine will reset its configuration and transition to the initial
-  state.  When a final top-level state is entered, the machine will emit the
-  finished() signal.
+  Returns whether this state machine is running.
+
+  start(), stop()
+*/
+bool QStateMachine::isRunning() const
+{
+    Q_D(const QStateMachine);
+    return (d->state == QStateMachinePrivate::Running);
+}
+
+/*!
+  Starts this state machine.  The machine will reset its configuration and
+  transition to the initial state.  When a final top-level state (QFinalState)
+  is entered, the machine will emit the finished() signal.
 
   \sa started(), finished(), stop(), initialState()
 */
@@ -1715,9 +1791,10 @@ void QStateMachine::start()
 }
 
 /*!
-  Stops this state machine.
+  Stops this state machine. The state machine will stop processing events and
+  then emit the stopped() signal.
 
-  \sa stopped()
+  \sa stopped(), start()
 */
 void QStateMachine::stop()
 {
@@ -1798,7 +1875,8 @@ QSet<QAbstractState*> QStateMachine::configuration() const
 /*!
   \fn QStateMachine::started()
 
-  This signal is emitted when the state machine has entered its initial state.
+  This signal is emitted when the state machine has entered its initial state
+  (QStateMachine::initialState).
 
   \sa QStateMachine::finished(), QStateMachine::start()
 */
@@ -1807,7 +1885,7 @@ QSet<QAbstractState*> QStateMachine::configuration() const
   \fn QStateMachine::finished()
 
   This signal is emitted when the state machine has reached a top-level final
-  state.
+  state (QFinalState).
 
   \sa QStateMachine::started()
 */
@@ -1817,7 +1895,7 @@ QSet<QAbstractState*> QStateMachine::configuration() const
 
   This signal is emitted when the state machine has stopped.
 
-  \sa QStateMachine::stop()
+  \sa QStateMachine::stop(), QStateMachine::finished()
 */
 
 /*!
@@ -2095,7 +2173,7 @@ QSignalEvent::~QSignalEvent()
 
   Returns the index of the signal.
 
-  \sa QMetaObject::indexOfSignal()
+  \sa QMetaObject::indexOfSignal(), QMetaObject::method()
 */
 
 /*!
diff --git a/src/corelib/statemachine/qstatemachine.h b/src/corelib/statemachine/qstatemachine.h
index 10bd443..5dc6c0b 100644
--- a/src/corelib/statemachine/qstatemachine.h
+++ b/src/corelib/statemachine/qstatemachine.h
@@ -86,7 +86,8 @@ public:
     enum Error {
         NoError, 
         NoInitialStateError,
-        NoDefaultStateInHistoryState,
+        NoDefaultStateInHistoryStateError,
+        NoCommonAncestorForTransitionError
     };
 
     QStateMachine(QObject *parent = 0);
@@ -107,6 +108,8 @@ public:
     QString errorString() const;
     void clearError();
 
+    bool isRunning() const;
+
 #ifndef QT_NO_ANIMATION
     bool animationsEnabled() const;
     void setAnimationsEnabled(bool enabled);
diff --git a/src/corelib/statemachine/qstatemachine_p.h b/src/corelib/statemachine/qstatemachine_p.h
index b3707ea..4bf9ce2 100644
--- a/src/corelib/statemachine/qstatemachine_p.h
+++ b/src/corelib/statemachine/qstatemachine_p.h
@@ -61,6 +61,7 @@
 #include <QtCore/qlist.h>
 #include <QtCore/qpair.h>
 #include <QtCore/qset.h>
+#include <QtCore/qvector.h>
 
 #include "qstate.h"
 #include "qstate_p.h"
@@ -120,12 +121,12 @@ public:
     void _q_animationFinished();
 #endif
 
-    void microstep(const QList<QAbstractTransition*> &transitionList);
+    void microstep(QEvent *event, const QList<QAbstractTransition*> &transitionList);
     bool isPreempted(const QAbstractState *s, const QSet<QAbstractTransition*> &transitions) const;
     QSet<QAbstractTransition*> selectTransitions(QEvent *event) const;
-    QList<QAbstractState*> exitStates(const QList<QAbstractTransition*> &transitionList);
-    void executeTransitionContent(const QList<QAbstractTransition*> &transitionList);
-    QList<QAbstractState*> enterStates(const QList<QAbstractTransition*> &enabledTransitions);
+    QList<QAbstractState*> exitStates(QEvent *event, const QList<QAbstractTransition*> &transitionList);
+    void executeTransitionContent(QEvent *event, const QList<QAbstractTransition*> &transitionList);
+    QList<QAbstractState*> enterStates(QEvent *event, const QList<QAbstractTransition*> &enabledTransitions);
     void addStatesToEnter(QAbstractState *s, QState *root,
                           QSet<QAbstractState*> &statesToEnter,
                           QSet<QAbstractState*> &statesForDefaultEntry);
@@ -150,6 +151,7 @@ public:
     void unregisterEventTransition(QEventTransition *transition);
 #endif
     void unregisterTransition(QAbstractTransition *transition);
+    void unregisterAllTransitions();
     void handleTransitionSignal(const QObject *sender, int signalIndex,
                                 void **args);    
     void scheduleProcess();
@@ -201,7 +203,7 @@ public:
 #ifndef QT_STATEMACHINE_SOLUTION
     QSignalEventGenerator *signalEventGenerator;
 #endif
-    QHash<const QObject*, QList<int> > connections;
+    QHash<const QObject*, QVector<int> > connections;
 #ifndef QT_NO_STATEMACHINE_EVENTFILTER
     QHash<QObject*, QSet<QEvent::Type> > qobjectEvents;
 #endif
diff --git a/src/corelib/thread/qthread_unix.cpp b/src/corelib/thread/qthread_unix.cpp
index f602821..8f1c698 100644
--- a/src/corelib/thread/qthread_unix.cpp
+++ b/src/corelib/thread/qthread_unix.cpp
@@ -180,8 +180,7 @@ void *QThreadPrivate::start(void *arg)
     data->quitNow = false;
 
     // ### TODO: allow the user to create a custom event dispatcher
-    if (QCoreApplication::instance())
-        createEventDispatcher(data);
+    createEventDispatcher(data);
 
     emit thr->started();
     pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
diff --git a/src/corelib/thread/qthread_win.cpp b/src/corelib/thread/qthread_win.cpp
index 27193c6..7094e3d 100644
--- a/src/corelib/thread/qthread_win.cpp
+++ b/src/corelib/thread/qthread_win.cpp
@@ -292,8 +292,7 @@ unsigned int __stdcall QThreadPrivate::start(void *arg)
 
     data->quitNow = false;
     // ### TODO: allow the user to create a custom event dispatcher
-    if (QCoreApplication::instance())
-        createEventDispatcher(data);
+    createEventDispatcher(data);
 
 #if !defined(QT_NO_DEBUG) && defined(Q_CC_MSVC) && !defined(Q_OS_WINCE)
     // sets the name of the current thread.
diff --git a/src/corelib/tools/qbytearraymatcher.cpp b/src/corelib/tools/qbytearraymatcher.cpp
index cd4cf90..211d190 100644
--- a/src/corelib/tools/qbytearraymatcher.cpp
+++ b/src/corelib/tools/qbytearraymatcher.cpp
@@ -120,6 +120,7 @@ QByteArrayMatcher::QByteArrayMatcher()
     : d(0)
 {
     p.p = 0;
+    p.l = 0;
     qMemSet(p.q_skiptable, 0, sizeof(p.q_skiptable));
 }
 
@@ -170,7 +171,7 @@ QByteArrayMatcher::~QByteArrayMatcher()
 QByteArrayMatcher &QByteArrayMatcher::operator=(const QByteArrayMatcher &other)
 {
     q_pattern = other.q_pattern;
-    qMemCopy(p.q_skiptable, other.p.q_skiptable, sizeof(p.q_skiptable));
+    qMemCopy(&p, &other.p, sizeof(p));
     return *this;
 }
 
diff --git a/src/corelib/tools/qbytearraymatcher.h b/src/corelib/tools/qbytearraymatcher.h
index d7f2366..633e92c 100644
--- a/src/corelib/tools/qbytearraymatcher.h
+++ b/src/corelib/tools/qbytearraymatcher.h
@@ -67,7 +67,12 @@ public:
 
     int indexIn(const QByteArray &ba, int from = 0) const;
     int indexIn(const char *str, int len, int from = 0) const;
-    inline QByteArray pattern() const { return q_pattern; }
+    inline QByteArray pattern() const
+    {
+        if (q_pattern.isNull())
+            return QByteArray((const char*)p.p, p.l);
+        return q_pattern;
+    }
 
 private:
     QByteArrayMatcherPrivate *d;
diff --git a/src/corelib/tools/qhash.cpp b/src/corelib/tools/qhash.cpp
index 540f43d..b2512e1 100644
--- a/src/corelib/tools/qhash.cpp
+++ b/src/corelib/tools/qhash.cpp
@@ -91,7 +91,7 @@ static uint hash(const QChar *p, int n)
 
 uint qHash(const QByteArray &key)
 {
-    return hash(reinterpret_cast<const uchar *>(key.data()), key.size());
+    return hash(reinterpret_cast<const uchar *>(key.constData()), key.size());
 }
 
 uint qHash(const QString &key)
@@ -107,7 +107,7 @@ uint qHash(const QStringRef &key)
 uint qHash(const QBitArray &bitArray)
 {
     int m = bitArray.d.size() - 1;
-    uint result = hash(reinterpret_cast<const uchar *>(bitArray.d.data()), qMax(0, m));
+    uint result = hash(reinterpret_cast<const uchar *>(bitArray.d.constData()), qMax(0, m));
 
     // deal with the last 0 to 7 bits manually, because we can't trust that
     // the padding is initialized to 0 in bitArray.d
@@ -379,6 +379,107 @@ void QHashData::checkSanity()
 #endif
 
 /*!
+    \fn uint qHash(const QPair<T1, T2> &key)
+    \relates QHash
+    \since 4.3
+
+    Returns the hash value for the \a key.
+
+    Types \c T1 and \c T2 must be supported by qHash().
+*/
+
+/*! \fn uint qHash(char key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(uchar key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(signed char key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(ushort key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(short key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(uint key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(int key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(ulong key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(long key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(quint64 key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(qint64 key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(QChar key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(const QByteArray &key)
+    \fn uint qHash(const QBitArray &key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(const QString &key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(const T *key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*!
     \class QHash
     \brief The QHash class is a template class that provides a hash-table-based dictionary.
 
@@ -401,7 +502,7 @@ void QHashData::checkSanity()
        key. With QHash, the items are arbitrarily ordered.
     \i The key type of a QMap must provide operator<(). The key
        type of a QHash must provide operator==() and a global
-       \l{qHash()}{qHash}(Key) function.
+       \l{qHash()} {hash} function.
     \endlist
 
     Here's an example QHash with QString keys and \c int values:
@@ -732,7 +833,6 @@ void QHashData::checkSanity()
 */
 
 /*! \fn const T QHash::value(const Key &key, const T &defaultValue) const
-
     \overload
 
     If the hash contains no item with the given \a key, the function returns
@@ -1490,121 +1590,6 @@ void QHashData::checkSanity()
     \sa operator+=(), operator-()
 */
 
-/*! \fn uint qHash(char key)
-    \relates QHash
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(uchar key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(signed char key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(ushort key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(short key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(uint key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(int key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(ulong key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(long key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(quint64 key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(qint64 key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(QChar key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(const QByteArray &key)
-    \fn uint qHash(const QBitArray &key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(const QString &key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(const T *key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*!
-    \fn uint qHash(const QPair<T1, T2> &key)
-    \relates QHash
-    \since 4.3
-
-    Returns the hash value for the \a key.
-
-    Types \c T1 and \c T2 must be supported by qHash().
-*/
-
 /*! \fn QDataStream &operator<<(QDataStream &out, const QHash<Key, T>& hash)
     \relates QHash
 
diff --git a/src/corelib/tools/qlistdata.cpp b/src/corelib/tools/qlistdata.cpp
index d7c39a7..d40b6b6 100644
--- a/src/corelib/tools/qlistdata.cpp
+++ b/src/corelib/tools/qlistdata.cpp
@@ -764,6 +764,10 @@ void **QListData::erase(void **xi)
     This function requires the value type to have an implementation of
     \c operator==().
 
+    Note that QList uses 0-based indexes, just like C++ arrays. Negative
+    indexes are not supported with the exception of the value mentioned
+    above.
+
     \sa lastIndexOf(), contains()
 */
 
@@ -780,6 +784,10 @@ void **QListData::erase(void **xi)
     This function requires the value type to have an implementation of
     \c operator==().
 
+    Note that QList uses 0-based indexes, just like C++ arrays. Negative 
+    indexes are not supported with the exception of the value mentioned
+    above.
+
     \sa indexOf()
 */
 
diff --git a/src/corelib/tools/qstring.cpp b/src/corelib/tools/qstring.cpp
index 375d672..c3649e3 100644
--- a/src/corelib/tools/qstring.cpp
+++ b/src/corelib/tools/qstring.cpp
@@ -743,7 +743,9 @@ int QString::grow(int size)
 /*!
     \since 4.2
 
-    Returns a copy of the \a string string encoded in ucs4.
+    Returns a copy of the \a string, where the encoding of \a string depends on 
+    the size of wchar. If wchar is 4 bytes, the \a string is interpreted as ucs-4,
+    if wchar is 2 bytes it is interpreted as ucs-2.
 
     If \a size is -1 (default), the \a string has to be 0 terminated.
 
diff --git a/src/corelib/tools/qstring.h b/src/corelib/tools/qstring.h
index 1493dce..69c4f2f 100644
--- a/src/corelib/tools/qstring.h
+++ b/src/corelib/tools/qstring.h
@@ -113,7 +113,7 @@ public:
 
     int capacity() const;
     inline void reserve(int size);
-    inline void squeeze() { if (d->size < d->alloc) realloc(); d->capacity = 0;}
+    inline void squeeze() { if (d->size < d->alloc || d->ref != 1) realloc(); d->capacity = 0;}
 
     inline const QChar *unicode() const;
     inline QChar *data();
diff --git a/src/corelib/tools/qvector.h b/src/corelib/tools/qvector.h
index 3fd52ee..1f047b8 100644
--- a/src/corelib/tools/qvector.h
+++ b/src/corelib/tools/qvector.h
@@ -315,7 +315,7 @@ void QVector<T>::detach_helper()
 { realloc(d->size, d->alloc); }
 template <typename T>
 void QVector<T>::reserve(int asize)
-{ if (asize > d->alloc) realloc(d->size, asize); d->capacity = 1; }
+{ if (asize > d->alloc || d->ref != 1) realloc(d->size, asize); d->capacity = 1; }
 template <typename T>
 void QVector<T>::resize(int asize)
 { realloc(asize, (asize > d->alloc || (!d->capacity && asize < d->size && asize < (d->alloc >> 1))) ?