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Diffstat (limited to 'src/declarative/util/qmlstate.cpp')
| -rw-r--r-- | src/declarative/util/qmlstate.cpp | 483 |
1 files changed, 0 insertions, 483 deletions
diff --git a/src/declarative/util/qmlstate.cpp b/src/declarative/util/qmlstate.cpp deleted file mode 100644 index c743e0b..0000000 --- a/src/declarative/util/qmlstate.cpp +++ /dev/null @@ -1,483 +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 "qmlstate_p_p.h" -#include "qmlstate_p.h" - -#include "qmltransition_p.h" -#include "qmlstategroup_p.h" -#include "qmlstateoperations_p.h" -#include "qmlanimation_p.h" -#include "qmlanimation_p_p.h" - -#include <qmlbinding.h> -#include <qmlglobal_p.h> - -#include <QtCore/qdebug.h> - -QT_BEGIN_NAMESPACE - -DEFINE_BOOL_CONFIG_OPTION(stateChangeDebug, STATECHANGE_DEBUG); - -QmlAction::QmlAction() -: restore(true), actionDone(false), reverseEvent(false), deletableToBinding(false), fromBinding(0), toBinding(0), event(0), - specifiedObject(0) -{ -} - -QmlAction::QmlAction(QObject *target, const QString &propertyName, - const QVariant &value) -: restore(true), actionDone(false), reverseEvent(false), deletableToBinding(false), toValue(value), fromBinding(0), - toBinding(0), event(0), specifiedObject(target), - specifiedProperty(propertyName) -{ - property = QmlMetaProperty::createProperty(target, propertyName); - if (property.isValid()) - fromValue = property.read(); -} - -QmlActionEvent::~QmlActionEvent() -{ -} - -QString QmlActionEvent::typeName() const -{ - return QString(); -} - -void QmlActionEvent::execute() -{ -} - -bool QmlActionEvent::isReversable() -{ - return false; -} - -void QmlActionEvent::reverse() -{ -} - -QList<QmlAction> QmlActionEvent::extraActions() -{ - return QList<QmlAction>(); -} - -bool QmlActionEvent::changesBindings() -{ - return false; -} - -void QmlActionEvent::clearForwardBindings() -{ -} - -void QmlActionEvent::clearReverseBindings() -{ -} - -bool QmlActionEvent::override(QmlActionEvent *other) -{ - Q_UNUSED(other); - return false; -} - -/*! - \internal -*/ -QmlStateOperation::QmlStateOperation(QObjectPrivate &dd, QObject *parent) - : QObject(dd, parent) -{ -} - -/*! - \qmlclass State QmlState - \since 4.7 - \brief The State element defines configurations of objects and properties. - - A state is specified as a set of batched changes from the default configuration. - - Note that setting the state of an object from within another state of the same object is - inadvisible. Not only would this have the same effect as going directly to the second state - it may cause the program to crash. - - \sa {qmlstates}{States}, {state-transitions}{Transitions} -*/ - -/*! - \internal - \class QmlState - \brief The QmlState class allows you to define configurations of objects and properties. - - \ingroup group_states - - QmlState allows you to specify a state as a set of batched changes from the default - configuration. - - \sa {states-transitions}{States and Transitions} -*/ - -QML_DEFINE_TYPE(Qt,4,6,State,QmlState) -QmlState::QmlState(QObject *parent) -: QObject(*(new QmlStatePrivate), parent) -{ - Q_D(QmlState); - d->transitionManager.setState(this); -} - -QmlState::~QmlState() -{ - Q_D(QmlState); - if (d->group) - d->group->removeState(this); -} - -/*! - \qmlproperty string State::name - This property holds the name of the state - - Each state should have a unique name. -*/ -QString QmlState::name() const -{ - Q_D(const QmlState); - return d->name; -} - -void QmlState::setName(const QString &n) -{ - Q_D(QmlState); - d->name = n; -} - -bool QmlState::isWhenKnown() const -{ - Q_D(const QmlState); - return d->when != 0; -} - -/*! - \qmlproperty bool State::when - This property holds when the state should be applied - - This should be set to an expression that evaluates to true when you want the state to - be applied. -*/ -QmlBinding *QmlState::when() const -{ - Q_D(const QmlState); - return d->when; -} - -void QmlState::setWhen(QmlBinding *when) -{ - Q_D(QmlState); - d->when = when; - if (d->group) - d->group->updateAutoState(); -} - -/*! - \qmlproperty string State::extend - This property holds the state that this state extends - - The state being extended is treated as the base state in regards to - the changes specified by the extending state. -*/ -QString QmlState::extends() const -{ - Q_D(const QmlState); - return d->extends; -} - -void QmlState::setExtends(const QString &extends) -{ - Q_D(QmlState); - d->extends = extends; -} - -/*! - \qmlproperty list<Change> State::changes - This property holds the changes to apply for this state - \default - - By default these changes are applied against the default state. If the state - extends another state, then the changes are applied against the state being - extended. -*/ -QmlListProperty<QmlStateOperation> QmlState::changes() -{ - Q_D(QmlState); - return QmlListProperty<QmlStateOperation>(this, &d->operations, QmlStatePrivate::operations_append, - QmlStatePrivate::operations_count, QmlStatePrivate::operations_at, - QmlStatePrivate::operations_clear); -} - -int QmlState::operationCount() const -{ - Q_D(const QmlState); - return d->operations.count(); -} - -QmlStateOperation *QmlState::operationAt(int index) const -{ - Q_D(const QmlState); - return d->operations.at(index); -} - -QmlState &QmlState::operator<<(QmlStateOperation *op) -{ - Q_D(QmlState); - d->operations.append(QmlStatePrivate::OperationGuard(op, &d->operations)); - return *this; -} - -void QmlStatePrivate::complete() -{ - Q_Q(QmlState); - - for (int ii = 0; ii < reverting.count(); ++ii) { - for (int jj = 0; jj < revertList.count(); ++jj) { - if (revertList.at(jj).property == reverting.at(ii)) { - revertList.removeAt(jj); - break; - } - } - } - reverting.clear(); - - emit q->completed(); -} - -// Generate a list of actions for this state. This includes coelescing state -// actions that this state "extends" -QmlStateOperation::ActionList -QmlStatePrivate::generateActionList(QmlStateGroup *group) const -{ - QmlStateOperation::ActionList applyList; - if (inState) - return applyList; - - // Prevent "extends" recursion - inState = true; - - if (!extends.isEmpty()) { - QList<QmlState *> states = group->states(); - for (int ii = 0; ii < states.count(); ++ii) - if (states.at(ii)->name() == extends) - applyList = static_cast<QmlStatePrivate*>(states.at(ii)->d_func())->generateActionList(group); - } - - foreach(QmlStateOperation *op, operations) - applyList << op->actions(); - - inState = false; - return applyList; -} - -QmlStateGroup *QmlState::stateGroup() const -{ - Q_D(const QmlState); - return d->group; -} - -void QmlState::setStateGroup(QmlStateGroup *group) -{ - Q_D(QmlState); - d->group = group; -} - -void QmlState::cancel() -{ - Q_D(QmlState); - d->transitionManager.cancel(); -} - -void QmlAction::deleteFromBinding() -{ - if (fromBinding) { - property.setBinding(0); - fromBinding->destroy(); - fromBinding = 0; - } -} - -void QmlState::apply(QmlStateGroup *group, QmlTransition *trans, QmlState *revert) -{ - Q_D(QmlState); - - qmlExecuteDeferred(this); - - cancel(); - if (revert) - revert->cancel(); - d->revertList.clear(); - d->reverting.clear(); - - if (revert) { - QmlStatePrivate *revertPrivate = - static_cast<QmlStatePrivate*>(revert->d_func()); - d->revertList = revertPrivate->revertList; - revertPrivate->revertList.clear(); - } - - // List of actions caused by this state - QmlStateOperation::ActionList applyList = d->generateActionList(group); - - // List of actions that need to be reverted to roll back (just) this state - QmlStatePrivate::SimpleActionList additionalReverts; - // First add the reverse of all the applyList actions - for (int ii = 0; ii < applyList.count(); ++ii) { - QmlAction &action = applyList[ii]; - - bool found = false; - - int jj; - if (action.event) { - if (!action.event->isReversable()) - continue; - for (jj = 0; jj < d->revertList.count(); ++jj) { - QmlActionEvent *event = d->revertList.at(jj).event; - if (event && event->typeName() == action.event->typeName()) { - if (action.event->override(event)) { - found = true; - break; - } - } - } - if (!found || action.event != d->revertList.at(jj).event) - action.event->saveOriginals(); - else if (action.event->isRewindable()) - action.event->saveCurrentValues(); - } else { - action.fromBinding = action.property.binding(); - - for (jj = 0; jj < d->revertList.count(); ++jj) { - if (d->revertList.at(jj).property == action.property) { - found = true; - break; - } - } - } - - if (!found) { - if (!action.restore) { - action.deleteFromBinding(); - } else { - // Only need to revert the applyList action if the previous - // state doesn't have a higher priority revert already - QmlSimpleAction r(action); - additionalReverts << r; - } - } else if (d->revertList.at(jj).binding != action.fromBinding) { - action.deleteFromBinding(); - } - } - - // Any reverts from a previous state that aren't carried forth - // into this state need to be translated into apply actions - for (int ii = 0; ii < d->revertList.count(); ++ii) { - bool found = false; - if (d->revertList.at(ii).event) { - QmlActionEvent *event = d->revertList.at(ii).event; - if (!event->isReversable()) - continue; - for (int jj = 0; !found && jj < applyList.count(); ++jj) { - const QmlAction &action = applyList.at(jj); - if (action.event && action.event->typeName() == event->typeName()) { - if (action.event->override(event)) - found = true; - } - } - } else { - for (int jj = 0; !found && jj < applyList.count(); ++jj) { - const QmlAction &action = applyList.at(jj); - if (action.property == d->revertList.at(ii).property) - found = true; - } - } - if (!found) { - QVariant cur = d->revertList.at(ii).property.read(); - QmlAbstractBinding *delBinding = d->revertList.at(ii).property.setBinding(0); - if (delBinding) - delBinding->destroy(); - - QmlAction a; - a.property = d->revertList.at(ii).property; - a.fromValue = cur; - a.toValue = d->revertList.at(ii).value; - a.toBinding = d->revertList.at(ii).binding; - a.specifiedObject = d->revertList.at(ii).specifiedObject; - a.specifiedProperty = d->revertList.at(ii).specifiedProperty; - a.event = d->revertList.at(ii).event; - a.reverseEvent = d->revertList.at(ii).reverseEvent; - if (a.event && a.event->isRewindable()) - a.event->saveCurrentValues(); - applyList << a; - // Store these special reverts in the reverting list - d->reverting << d->revertList.at(ii).property; - } - } - // All the local reverts now become part of the ongoing revertList - d->revertList << additionalReverts; - - // Output for debugging - if (stateChangeDebug()) { - foreach(const QmlAction &action, applyList) { - if (action.event) - qWarning() << " QmlAction event:" << action.event->typeName(); - else - qWarning() << " QmlAction:" << action.property.object() - << action.property.name() << "From:" << action.fromValue - << "To:" << action.toValue; - } - } - - d->transitionManager.transition(applyList, trans); -} - -QML_DEFINE_NOCREATE_TYPE(QmlStateOperation) -QmlStateOperation::ActionList QmlStateOperation::actions() -{ - return ActionList(); -} - -QT_END_NAMESPACE |