Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into 4.7-integration

* '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2:
  QFileDialog : Fix completer showing up on the MyComputer view.
  Amend previous commit 4e2eb2945dbc3865e2901f12d663ed89e8f0dfbf to fix compilation with QT_NO_DEBUG_STREAM
  Compile with QT_NO_DEBUG_STREAM
  Docs: HTML comments marks so Creator can extract data efficiently.
  Work around memory leak issue in grid and linear layouts.

7 files changed, 20 insertions, 12 deletions

diff --git a/src/gui/graphicsview/qgraphicsgridlayout.cpp b/src/gui/graphicsview/qgraphicsgridlayout.cpp
index 83db3ec..062b5ac 100644
--- a/src/gui/graphicsview/qgraphicsgridlayout.cpp
+++ b/src/gui/graphicsview/qgraphicsgridlayout.cpp
@@ -94,14 +94,13 @@ public:
 #endif
 };
 
+Q_GLOBAL_STATIC(QWidget, globalStyleInfoWidget);
+
 QLayoutStyleInfo QGraphicsGridLayoutPrivate::styleInfo() const
 {
-    static QWidget *wid = 0;
-    if (!wid)
-        wid = new QWidget;
     QGraphicsItem *item = parentItem();
     QStyle *style = (item && item->isWidget()) ? static_cast<QGraphicsWidget*>(item)->style() : QApplication::style();
-    return QLayoutStyleInfo(style, wid);
+    return QLayoutStyleInfo(style, globalStyleInfoWidget());
 }
 
 /*!
diff --git a/src/gui/graphicsview/qgraphicslinearlayout.cpp b/src/gui/graphicsview/qgraphicslinearlayout.cpp
index b828722..37408ef 100644
--- a/src/gui/graphicsview/qgraphicslinearlayout.cpp
+++ b/src/gui/graphicsview/qgraphicslinearlayout.cpp
@@ -171,14 +171,13 @@ int QGraphicsLinearLayoutPrivate::gridColumn(int index) const
     return int(qMin(uint(index), uint(engine.columnCount())));
 }
 
+Q_GLOBAL_STATIC(QWidget, globalStyleInfoWidget)
+
 QLayoutStyleInfo QGraphicsLinearLayoutPrivate::styleInfo() const
 {
-    static QWidget *wid = 0;
-    if (!wid)
-        wid = new QWidget;
     QGraphicsItem *item = parentItem();
     QStyle *style = (item && item->isWidget()) ? static_cast<QGraphicsWidget*>(item)->style() : QApplication::style();
-    return QLayoutStyleInfo(style, wid);
+    return QLayoutStyleInfo(style, globalStyleInfoWidget());
 }
 
 /*!
diff --git a/src/gui/styles/qstyle.cpp b/src/gui/styles/qstyle.cpp
index 4cfa93f..687e587 100644
--- a/src/gui/styles/qstyle.cpp
+++ b/src/gui/styles/qstyle.cpp
@@ -2421,9 +2421,10 @@ QT_BEGIN_INCLUDE_NAMESPACE
 #include <QDebug>
 QT_END_INCLUDE_NAMESPACE
 
+#if !defined(QT_NO_DEBUG_STREAM)
 QDebug operator<<(QDebug debug, QStyle::State state)
 {
-#if !defined(QT_NO_DEBUG) && !defined(QT_NO_DEBUG_STREAM)
+#if !defined(QT_NO_DEBUG)
     debug << "QStyle::State(";
 
     QStringList states;
@@ -2458,6 +2459,7 @@ QDebug operator<<(QDebug debug, QStyle::State state)
 #endif
     return debug;
 }
+#endif
 
 /*!
     \since 4.6
diff --git a/src/gui/styles/qstyle.h b/src/gui/styles/qstyle.h
index 439d626..439901a 100644
--- a/src/gui/styles/qstyle.h
+++ b/src/gui/styles/qstyle.h
@@ -878,7 +878,9 @@ private:
 Q_DECLARE_OPERATORS_FOR_FLAGS(QStyle::State)
 Q_DECLARE_OPERATORS_FOR_FLAGS(QStyle::SubControls)
 
+#if !defined(QT_NO_DEBUG_STREAM)
 Q_GUI_EXPORT QDebug operator<<(QDebug debug, QStyle::State state);
+#endif
 
 QT_END_NAMESPACE
 
diff --git a/src/gui/styles/qstyleoption.cpp b/src/gui/styles/qstyleoption.cpp
index c057a2b..4780edf 100644
--- a/src/gui/styles/qstyleoption.cpp
+++ b/src/gui/styles/qstyleoption.cpp
@@ -5419,9 +5419,10 @@ QStyleHintReturnVariant::QStyleHintReturnVariant() : QStyleHintReturn(Version, T
     Returns a T or 0 depending on the type of \a hint.
 */
 
+#if !defined(QT_NO_DEBUG_STREAM)
 QDebug operator<<(QDebug debug, const QStyleOption::OptionType &optionType)
 {
-#if !defined(QT_NO_DEBUG) && !defined(QT_NO_DEBUG_STREAM)
+#if !defined(QT_NO_DEBUG)
     switch (optionType) {
     case QStyleOption::SO_Default:
         debug << "SO_Default"; break;
@@ -5488,7 +5489,7 @@ QDebug operator<<(QDebug debug, const QStyleOption::OptionType &optionType)
 
 QDebug operator<<(QDebug debug, const QStyleOption &option)
 {
-#if !defined(QT_NO_DEBUG) && !defined(QT_NO_DEBUG_STREAM)
+#if !defined(QT_NO_DEBUG)
     debug << "QStyleOption(";
     debug << QStyleOption::OptionType(option.type);
     debug << ',' << (option.direction == Qt::RightToLeft ? "RightToLeft" : "LeftToRight");
@@ -5498,5 +5499,6 @@ QDebug operator<<(QDebug debug, const QStyleOption &option)
 #endif
     return debug;
 }
+#endif
 
 QT_END_NAMESPACE
diff --git a/src/gui/styles/qstyleoption.h b/src/gui/styles/qstyleoption.h
index 95de8d5..e79d9a4 100644
--- a/src/gui/styles/qstyleoption.h
+++ b/src/gui/styles/qstyleoption.h
@@ -958,8 +958,10 @@ T qstyleoption_cast(QStyleHintReturn *hint)
     return 0;
 }
 
+#if !defined(QT_NO_DEBUG_STREAM)
 Q_GUI_EXPORT QDebug operator<<(QDebug debug, const QStyleOption::OptionType &optionType);
 Q_GUI_EXPORT QDebug operator<<(QDebug debug, const QStyleOption &option);
+#endif
 
 QT_END_NAMESPACE
 
diff --git a/src/gui/util/qcompleter.cpp b/src/gui/util/qcompleter.cpp
index 1abc2d9..04d6de9 100644
--- a/src/gui/util/qcompleter.cpp
+++ b/src/gui/util/qcompleter.cpp
@@ -154,6 +154,7 @@
 #include "QtGui/qevent.h"
 #include "QtGui/qheaderview.h"
 #include "QtGui/qdesktopwidget.h"
+#include "QtGui/qlineedit.h"
 
 QT_BEGIN_NAMESPACE
 
@@ -920,8 +921,9 @@ void QCompleterPrivate::showPopup(const QRect& rect)
 void QCompleterPrivate::_q_fileSystemModelDirectoryLoaded(const QString &path)
 {
     Q_Q(QCompleter);
+    QLineEdit *lineEdit = qobject_cast<QLineEdit *>(widget);
     //the path given by QFileSystemModel does not end with /
-    if (!q->completionPrefix().isEmpty() && q->completionPrefix() != path + QLatin1Char('/'))
+    if (lineEdit && !lineEdit->text().isEmpty() && !q->completionPrefix().isEmpty() && q->completionPrefix() != path + QLatin1Char('/'))
         q->complete();
 }