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Diffstat (limited to 'src/declarative/util/qmlstategroup.cpp')
| -rw-r--r-- | src/declarative/util/qmlstategroup.cpp | 441 |
1 files changed, 0 insertions, 441 deletions
diff --git a/src/declarative/util/qmlstategroup.cpp b/src/declarative/util/qmlstategroup.cpp deleted file mode 100644 index 7e6dc58..0000000 --- a/src/declarative/util/qmlstategroup.cpp +++ /dev/null @@ -1,441 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtDeclarative module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the Technology Preview License Agreement accompanying -** this package. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** If you have questions regarding the use of this file, please contact -** Nokia at qt-info@nokia.com. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qmlstategroup_p.h" - -#include "qmltransition_p.h" -#include "qmlstate_p_p.h" - -#include <qmlbinding.h> -#include <qmlglobal_p.h> - -#include <QtCore/qdebug.h> - -#include <private/qobject_p.h> - -QT_BEGIN_NAMESPACE - -DEFINE_BOOL_CONFIG_OPTION(stateChangeDebug, STATECHANGE_DEBUG); - -class QmlStateGroupPrivate : public QObjectPrivate -{ - Q_DECLARE_PUBLIC(QmlStateGroup) -public: - QmlStateGroupPrivate(QmlStateGroup *p) - : nullState(0), componentComplete(true), - ignoreTrans(false), applyingState(false) {} - - QString currentState; - QmlState *nullState; - - static void append_state(QmlListProperty<QmlState> *list, QmlState *state); - static int count_state(QmlListProperty<QmlState> *list); - static QmlState *at_state(QmlListProperty<QmlState> *list, int index); - - QList<QmlState *> states; - QList<QmlTransition *> transitions; - - bool componentComplete; - bool ignoreTrans; - bool applyingState; - - QmlTransition *findTransition(const QString &from, const QString &to); - void setCurrentStateInternal(const QString &state, bool = false); - bool updateAutoState(); -}; - -/*! - \qmlclass StateGroup QmlStateGroup - \since 4.7 - \brief The StateGroup element provides state support for non-Item elements. - - Item (and all dervied elements) provides built in support for states and transitions - via its state, states and transitions properties. StateGroup provides an easy way to - use this support in other (non-Item-derived) elements. - - \qml - MyCustomObject { - StateGroup { - id: myStateGroup - states: State { - name: "state1" - ... - } - transitions: Transition { - ... - } - } - - onSomethingHappened: myStateGroup.state = "state1"; - } - \endqml - - \sa {qmlstate}{States} {state-transitions}{Transitions} -*/ - -QmlStateGroup::QmlStateGroup(QObject *parent) - : QObject(*(new QmlStateGroupPrivate(this)), parent) -{ -} - -QmlStateGroup::~QmlStateGroup() -{ - Q_D(const QmlStateGroup); - for (int i = 0; i < d->states.count(); ++i) - d->states.at(i)->setStateGroup(0); -} - -QList<QmlState *> QmlStateGroup::states() const -{ - Q_D(const QmlStateGroup); - return d->states; -} - -/*! - \qmlproperty list<State> StateGroup::states - This property holds a list of states defined by the state group. - - \qml - StateGroup { - states: [ - State { ... }, - State { ... } - ... - ] - } - \endqml - - \sa {qmlstate}{States} -*/ -QmlListProperty<QmlState> QmlStateGroup::statesProperty() -{ - Q_D(QmlStateGroup); - return QmlListProperty<QmlState>(this, &d->states, &QmlStateGroupPrivate::append_state, - &QmlStateGroupPrivate::count_state, - &QmlStateGroupPrivate::at_state); -} - -void QmlStateGroupPrivate::append_state(QmlListProperty<QmlState> *list, QmlState *state) -{ - QmlStateGroup *_this = static_cast<QmlStateGroup *>(list->object); - if (state) { - _this->d_func()->states.append(state); - state->setStateGroup(_this); - } - -} - -int QmlStateGroupPrivate::count_state(QmlListProperty<QmlState> *list) -{ - QmlStateGroup *_this = static_cast<QmlStateGroup *>(list->object); - return _this->d_func()->states.count(); -} - -QmlState *QmlStateGroupPrivate::at_state(QmlListProperty<QmlState> *list, int index) -{ - QmlStateGroup *_this = static_cast<QmlStateGroup *>(list->object); - return _this->d_func()->states.at(index); -} - -/*! - \qmlproperty list<Transition> StateGroup::transitions - This property holds a list of transitions defined by the state group. - - \qml - StateGroup { - transitions: [ - Transition { ... }, - Transition { ... } - ... - ] - } - \endqml - - \sa {state-transitions}{Transitions} -*/ -QmlListProperty<QmlTransition> QmlStateGroup::transitionsProperty() -{ - Q_D(QmlStateGroup); - return QmlListProperty<QmlTransition>(this, d->transitions); -} - -/*! - \qmlproperty string StateGroup::state - - This property holds the name of the current state of the state group. - - This property is often used in scripts to change between states. For - example: - - \qml - Script { - function toggle() { - if (button.state == 'On') - button.state = 'Off'; - else - button.state = 'On'; - } - } - \endqml - - If the state group is in its base state (i.e. no explicit state has been - set), \c state will be a blank string. Likewise, you can return a - state group to its base state by setting its current state to \c ''. - - \sa {qmlstates}{States} -*/ -QString QmlStateGroup::state() const -{ - Q_D(const QmlStateGroup); - return d->currentState; -} - -void QmlStateGroup::setState(const QString &state) -{ - Q_D(QmlStateGroup); - if (d->currentState == state) - return; - - d->setCurrentStateInternal(state); -} - -void QmlStateGroup::classBegin() -{ - Q_D(QmlStateGroup); - d->componentComplete = false; -} - -void QmlStateGroup::componentComplete() -{ - Q_D(QmlStateGroup); - d->componentComplete = true; - - if (d->updateAutoState()) { - return; - } else if (!d->currentState.isEmpty()) { - QString cs = d->currentState; - d->currentState = QString(); - d->setCurrentStateInternal(cs, true); - } -} - -/*! - Returns true if the state was changed, otherwise false. -*/ -bool QmlStateGroup::updateAutoState() -{ - Q_D(QmlStateGroup); - return d->updateAutoState(); -} - -bool QmlStateGroupPrivate::updateAutoState() -{ - Q_Q(QmlStateGroup); - if (!componentComplete) - return false; - - bool revert = false; - for (int ii = 0; ii < states.count(); ++ii) { - QmlState *state = states.at(ii); - if (state->isWhenKnown()) { - if (!state->name().isEmpty()) { - if (state->when() && state->when()->value().toBool()) { - if (stateChangeDebug()) - qWarning() << "Setting auto state due to:" - << state->when()->expression(); - if (currentState != state->name()) { - q->setState(state->name()); - return true; - } else { - return false; - } - } else if (state->name() == currentState) { - revert = true; - } - } - } - } - if (revert) { - bool rv = currentState != QString(); - q->setState(QString()); - return rv; - } else { - return false; - } -} - -QmlTransition *QmlStateGroupPrivate::findTransition(const QString &from, const QString &to) -{ - QmlTransition *highest = 0; - int score = 0; - bool reversed = false; - bool done = false; - - for (int ii = 0; !done && ii < transitions.count(); ++ii) { - QmlTransition *t = transitions.at(ii); - for (int ii = 0; ii < 2; ++ii) - { - if (ii && (!t->reversible() || - (t->fromState() == QLatin1String("*") && - t->toState() == QLatin1String("*")))) - break; - QStringList fromState; - QStringList toState; - - fromState = t->fromState().split(QLatin1Char(',')); - toState = t->toState().split(QLatin1Char(',')); - if (ii == 1) - qSwap(fromState, toState); - int tScore = 0; - if (fromState.contains(from)) - tScore += 2; - else if (fromState.contains(QLatin1String("*"))) - tScore += 1; - else - continue; - - if (toState.contains(to)) - tScore += 2; - else if (toState.contains(QLatin1String("*"))) - tScore += 1; - else - continue; - - if (ii == 1) - reversed = true; - else - reversed = false; - - if (tScore == 4) { - highest = t; - done = true; - break; - } else if (tScore > score) { - score = tScore; - highest = t; - } - } - } - - if (highest) - highest->setReversed(reversed); - - return highest; -} - -void QmlStateGroupPrivate::setCurrentStateInternal(const QString &state, - bool ignoreTrans) -{ - Q_Q(QmlStateGroup); - if (!componentComplete) { - currentState = state; - return; - } - - if (applyingState) { - qWarning() << "Can't apply a state change as part of a state definition."; - return; - } - - applyingState = true; - - QmlTransition *transition = (ignoreTrans || ignoreTrans) ? 0 : findTransition(currentState, state); - if (stateChangeDebug()) { - qWarning() << this << "Changing state. From" << currentState << ". To" << state; - if (transition) - qWarning() << " using transition" << transition->fromState() - << transition->toState(); - } - - QmlState *oldState = 0; - if (!currentState.isEmpty()) { - for (int ii = 0; ii < states.count(); ++ii) { - if (states.at(ii)->name() == currentState) { - oldState = states.at(ii); - break; - } - } - } - - currentState = state; - emit q->stateChanged(currentState); - - QmlState *newState = 0; - for (int ii = 0; ii < states.count(); ++ii) { - if (states.at(ii)->name() == currentState) { - newState = states.at(ii); - break; - } - } - - if (oldState == 0 || newState == 0) { - if (!nullState) { nullState = new QmlState; QmlGraphics_setParent_noEvent(nullState, q); } - if (!oldState) oldState = nullState; - if (!newState) newState = nullState; - } - - newState->apply(q, transition, oldState); - applyingState = false; - if (!transition) - static_cast<QmlStatePrivate*>(QObjectPrivate::get(newState))->complete(); -} - -QmlState *QmlStateGroup::findState(const QString &name) const -{ - Q_D(const QmlStateGroup); - for (int i = 0; i < d->states.count(); ++i) { - QmlState *state = d->states.at(i); - if (state->name() == name) - return state; - } - - return 0; -} - -void QmlStateGroup::removeState(QmlState *state) -{ - Q_D(QmlStateGroup); - d->states.removeOne(state); -} - -QT_END_NAMESPACE - -QML_DEFINE_TYPE(Qt,4,6,StateGroup,QmlStateGroup) |