diff options
Diffstat (limited to 'src/declarative/util/qdeclarativepropertychanges.cpp')
| -rw-r--r-- | src/declarative/util/qdeclarativepropertychanges.cpp | 150 |
1 files changed, 89 insertions, 61 deletions
diff --git a/src/declarative/util/qdeclarativepropertychanges.cpp b/src/declarative/util/qdeclarativepropertychanges.cpp index 8d01b80..abbe4e2 100644 --- a/src/declarative/util/qdeclarativepropertychanges.cpp +++ b/src/declarative/util/qdeclarativepropertychanges.cpp @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** @@ -42,6 +42,9 @@ #include "private/qdeclarativepropertychanges_p.h" #include "private/qdeclarativeopenmetaobject_p.h" +#include "private/qdeclarativerewrite_p.h" +#include "private/qdeclarativeengine_p.h" +#include "private/qdeclarativecompiler_p.h" #include <qdeclarativeinfo.h> #include <qdeclarativecustomparser_p.h> @@ -115,12 +118,13 @@ QT_BEGIN_NAMESPACE \section2 Immediate property changes in transitions - When \l Transitions are used to animate state changes, they animate - properties from their values in the current state to those defined in the - new state (as defined by PropertyChanges objects). However, - it is sometimes desirable to set a property value \e immediately during a - \l Transition, without animation; in these cases, the PropertyAction - element can be used to force an immediate property change. + When \l{QML Animation and Transitions}{Transitions} are used to animate + state changes, they animate properties from their values in the current + state to those defined in the new state (as defined by PropertyChanges + objects). However, it is sometimes desirable to set a property value + \e immediately during a \l Transition, without animation; in these cases, + the PropertyAction element can be used to force an immediate property + change. See the PropertyAction documentation for more details. @@ -217,11 +221,22 @@ public: void decode(); - QList<QPair<QByteArray, QVariant> > properties; - QList<QPair<QByteArray, QDeclarativeExpression *> > expressions; + class ExpressionChange { + public: + ExpressionChange(const QString &_name, + QDeclarativeBinding::Identifier _id, + QDeclarativeExpression *_expr) + : name(_name), id(_id), expression(_expr) {} + QString name; + QDeclarativeBinding::Identifier id; + QDeclarativeExpression *expression; + }; + + QList<QPair<QString, QVariant> > properties; + QList<ExpressionChange> expressions; QList<QDeclarativeReplaceSignalHandler*> signalReplacements; - QDeclarativeProperty property(const QByteArray &); + QDeclarativeProperty property(const QString &); }; void @@ -267,6 +282,7 @@ QDeclarativePropertyChangesParser::compile(const QList<QDeclarativeCustomParserP QDeclarativeParser::Variant v = qvariant_cast<QDeclarativeParser::Variant>(data.at(ii).second); QVariant var; bool isScript = v.isScript(); + QDeclarativeBinding::Identifier id; switch(v.type()) { case QDeclarativeParser::Variant::Boolean: var = QVariant(v.asBoolean()); @@ -280,10 +296,17 @@ QDeclarativePropertyChangesParser::compile(const QList<QDeclarativeCustomParserP case QDeclarativeParser::Variant::Invalid: case QDeclarativeParser::Variant::Script: var = QVariant(v.asScript()); + { + // Pre-rewrite the expression + QString expression = v.asScript(); + id = rewriteBinding(expression, data.at(ii).first); //### recreates the AST, which is slow + } break; } - ds << data.at(ii).first << isScript << var; + ds << QString::fromUtf8(data.at(ii).first) << isScript << var; + if (isScript) + ds << id; } return rv; @@ -300,12 +323,15 @@ void QDeclarativePropertyChangesPrivate::decode() int count; ds >> count; for (int ii = 0; ii < count; ++ii) { - QByteArray name; + QString name; bool isScript; QVariant data; + QDeclarativeBinding::Identifier id = QDeclarativeBinding::Invalid; ds >> name; ds >> isScript; ds >> data; + if (isScript) + ds >> id; QDeclarativeProperty prop = property(name); //### better way to check for signal property? if (prop.type() & QDeclarativeProperty::SignalProperty) { @@ -322,7 +348,7 @@ void QDeclarativePropertyChangesPrivate::decode() QDeclarativeData *ddata = QDeclarativeData::get(q); if (ddata && ddata->outerContext && !ddata->outerContext->url.isEmpty()) expression->setSourceLocation(ddata->outerContext->url.toString(), ddata->lineNumber); - expressions << qMakePair(name, expression); + expressions << ExpressionChange(name, id, expression); } else { properties << qMakePair(name, data); } @@ -350,7 +376,7 @@ QDeclarativePropertyChanges::~QDeclarativePropertyChanges() { Q_D(QDeclarativePropertyChanges); for(int ii = 0; ii < d->expressions.count(); ++ii) - delete d->expressions.at(ii).second; + delete d->expressions.at(ii).expression; for(int ii = 0; ii < d->signalReplacements.count(); ++ii) delete d->signalReplacements.at(ii); } @@ -389,15 +415,15 @@ void QDeclarativePropertyChanges::setRestoreEntryValues(bool v) } QDeclarativeProperty -QDeclarativePropertyChangesPrivate::property(const QByteArray &property) +QDeclarativePropertyChangesPrivate::property(const QString &property) { Q_Q(QDeclarativePropertyChanges); - QDeclarativeProperty prop(object, QString::fromUtf8(property), qmlContext(q)); + QDeclarativeProperty prop(object, property, qmlContext(q)); if (!prop.isValid()) { - qmlInfo(q) << QDeclarativePropertyChanges::tr("Cannot assign to non-existent property \"%1\"").arg(QString::fromUtf8(property)); + qmlInfo(q) << QDeclarativePropertyChanges::tr("Cannot assign to non-existent property \"%1\"").arg(property); return QDeclarativeProperty(); } else if (!(prop.type() & QDeclarativeProperty::SignalProperty) && !prop.isWritable()) { - qmlInfo(q) << QDeclarativePropertyChanges::tr("Cannot assign to read-only property \"%1\"").arg(QString::fromUtf8(property)); + qmlInfo(q) << QDeclarativePropertyChanges::tr("Cannot assign to read-only property \"%1\"").arg(property); return QDeclarativeProperty(); } return prop; @@ -413,9 +439,7 @@ QDeclarativePropertyChanges::ActionList QDeclarativePropertyChanges::actions() for (int ii = 0; ii < d->properties.count(); ++ii) { - QByteArray property = d->properties.at(ii).first; - - QDeclarativeAction a(d->object, QString::fromUtf8(property), + QDeclarativeAction a(d->object, d->properties.at(ii).first, qmlContext(this), d->properties.at(ii).second); if (a.property.isValid()) { @@ -437,7 +461,7 @@ QDeclarativePropertyChanges::ActionList QDeclarativePropertyChanges::actions() for (int ii = 0; ii < d->expressions.count(); ++ii) { - QByteArray property = d->expressions.at(ii).first; + const QString &property = d->expressions.at(ii).name; QDeclarativeProperty prop = d->property(property); if (prop.isValid()) { @@ -446,16 +470,20 @@ QDeclarativePropertyChanges::ActionList QDeclarativePropertyChanges::actions() a.property = prop; a.fromValue = a.property.read(); a.specifiedObject = d->object; - a.specifiedProperty = QString::fromUtf8(property); + a.specifiedProperty = property; if (d->isExplicit) { - a.toValue = d->expressions.at(ii).second->evaluate(); + a.toValue = d->expressions.at(ii).expression->evaluate(); } else { - QDeclarativeExpression *e = d->expressions.at(ii).second; - QDeclarativeBinding *newBinding = - new QDeclarativeBinding(e->expression(), object(), qmlContext(this)); + QDeclarativeExpression *e = d->expressions.at(ii).expression; + + QDeclarativeBinding::Identifier id = d->expressions.at(ii).id; + QDeclarativeBinding *newBinding = id != QDeclarativeBinding::Invalid ? QDeclarativeBinding::createBinding(id, object(), qmlContext(this), e->sourceFile(), e->lineNumber()) : 0; + if (!newBinding) { + newBinding = new QDeclarativeBinding(e->expression(), object(), qmlContext(this)); + newBinding->setSourceLocation(e->sourceFile(), e->lineNumber()); + } newBinding->setTarget(prop); - newBinding->setSourceLocation(e->sourceFile(), e->lineNumber()); a.toBinding = newBinding; a.deletableToBinding = true; } @@ -498,10 +526,10 @@ void QDeclarativePropertyChanges::setIsExplicit(bool e) d->isExplicit = e; } -bool QDeclarativePropertyChanges::containsValue(const QByteArray &name) const +bool QDeclarativePropertyChanges::containsValue(const QString &name) const { Q_D(const QDeclarativePropertyChanges); - typedef QPair<QByteArray, QVariant> PropertyEntry; + typedef QPair<QString, QVariant> PropertyEntry; QListIterator<PropertyEntry> propertyIterator(d->properties); while (propertyIterator.hasNext()) { @@ -514,15 +542,15 @@ bool QDeclarativePropertyChanges::containsValue(const QByteArray &name) const return false; } -bool QDeclarativePropertyChanges::containsExpression(const QByteArray &name) const +bool QDeclarativePropertyChanges::containsExpression(const QString &name) const { Q_D(const QDeclarativePropertyChanges); - typedef QPair<QByteArray, QDeclarativeExpression *> ExpressionEntry; + typedef QDeclarativePropertyChangesPrivate::ExpressionChange ExpressionEntry; QListIterator<ExpressionEntry> expressionIterator(d->expressions); while (expressionIterator.hasNext()) { const ExpressionEntry &entry = expressionIterator.next(); - if (entry.first == name) { + if (entry.name == name) { return true; } } @@ -530,21 +558,21 @@ bool QDeclarativePropertyChanges::containsExpression(const QByteArray &name) con return false; } -bool QDeclarativePropertyChanges::containsProperty(const QByteArray &name) const +bool QDeclarativePropertyChanges::containsProperty(const QString &name) const { return containsValue(name) || containsExpression(name); } -void QDeclarativePropertyChanges::changeValue(const QByteArray &name, const QVariant &value) +void QDeclarativePropertyChanges::changeValue(const QString &name, const QVariant &value) { Q_D(QDeclarativePropertyChanges); - typedef QPair<QByteArray, QVariant> PropertyEntry; - typedef QPair<QByteArray, QDeclarativeExpression *> ExpressionEntry; + typedef QPair<QString, QVariant> PropertyEntry; + typedef QDeclarativePropertyChangesPrivate::ExpressionChange ExpressionEntry; QMutableListIterator<ExpressionEntry> expressionIterator(d->expressions); while (expressionIterator.hasNext()) { const ExpressionEntry &entry = expressionIterator.next(); - if (entry.first == name) { + if (entry.name == name) { expressionIterator.remove(); if (state() && state()->isStateActive()) { QDeclarativeAbstractBinding *oldBinding = QDeclarativePropertyPrivate::binding(d->property(name)); @@ -576,7 +604,7 @@ void QDeclarativePropertyChanges::changeValue(const QByteArray &name, const QVar action.property = d->property(name); action.fromValue = action.property.read(); action.specifiedObject = object(); - action.specifiedProperty = QString::fromUtf8(name); + action.specifiedProperty = name; action.toValue = value; propertyIterator.insert(PropertyEntry(name, value)); @@ -589,11 +617,11 @@ void QDeclarativePropertyChanges::changeValue(const QByteArray &name, const QVar } } -void QDeclarativePropertyChanges::changeExpression(const QByteArray &name, const QString &expression) +void QDeclarativePropertyChanges::changeExpression(const QString &name, const QString &expression) { Q_D(QDeclarativePropertyChanges); - typedef QPair<QByteArray, QVariant> PropertyEntry; - typedef QPair<QByteArray, QDeclarativeExpression *> ExpressionEntry; + typedef QPair<QString, QVariant> PropertyEntry; + typedef QDeclarativePropertyChangesPrivate::ExpressionChange ExpressionEntry; bool hadValue = false; @@ -610,8 +638,8 @@ void QDeclarativePropertyChanges::changeExpression(const QByteArray &name, const QMutableListIterator<ExpressionEntry> expressionIterator(d->expressions); while (expressionIterator.hasNext()) { const ExpressionEntry &entry = expressionIterator.next(); - if (entry.first == name) { - entry.second->setExpression(expression); + if (entry.name == name) { + entry.expression->setExpression(expression); if (state() && state()->isStateActive()) { QDeclarativeAbstractBinding *oldBinding = QDeclarativePropertyPrivate::binding(d->property(name)); if (oldBinding) { @@ -628,7 +656,7 @@ void QDeclarativePropertyChanges::changeExpression(const QByteArray &name, const } QDeclarativeExpression *newExpression = new QDeclarativeExpression(qmlContext(this), d->object, expression); - expressionIterator.insert(ExpressionEntry(name, newExpression)); + expressionIterator.insert(ExpressionEntry(name, QDeclarativeBinding::Invalid, newExpression)); if (state() && state()->isStateActive()) { if (hadValue) { @@ -647,7 +675,7 @@ void QDeclarativePropertyChanges::changeExpression(const QByteArray &name, const action.property = d->property(name); action.fromValue = action.property.read(); action.specifiedObject = object(); - action.specifiedProperty = QString::fromUtf8(name); + action.specifiedProperty = name; if (d->isExplicit) { @@ -670,11 +698,11 @@ void QDeclarativePropertyChanges::changeExpression(const QByteArray &name, const // what about the signal handler? } -QVariant QDeclarativePropertyChanges::property(const QByteArray &name) const +QVariant QDeclarativePropertyChanges::property(const QString &name) const { Q_D(const QDeclarativePropertyChanges); - typedef QPair<QByteArray, QVariant> PropertyEntry; - typedef QPair<QByteArray, QDeclarativeExpression *> ExpressionEntry; + typedef QPair<QString, QVariant> PropertyEntry; + typedef QDeclarativePropertyChangesPrivate::ExpressionChange ExpressionEntry; QListIterator<PropertyEntry> propertyIterator(d->properties); while (propertyIterator.hasNext()) { @@ -687,24 +715,24 @@ QVariant QDeclarativePropertyChanges::property(const QByteArray &name) const QListIterator<ExpressionEntry> expressionIterator(d->expressions); while (expressionIterator.hasNext()) { const ExpressionEntry &entry = expressionIterator.next(); - if (entry.first == name) { - return QVariant(entry.second->expression()); + if (entry.name == name) { + return QVariant(entry.expression->expression()); } } return QVariant(); } -void QDeclarativePropertyChanges::removeProperty(const QByteArray &name) +void QDeclarativePropertyChanges::removeProperty(const QString &name) { Q_D(QDeclarativePropertyChanges); - typedef QPair<QByteArray, QVariant> PropertyEntry; - typedef QPair<QByteArray, QDeclarativeExpression *> ExpressionEntry; + typedef QPair<QString, QVariant> PropertyEntry; + typedef QDeclarativePropertyChangesPrivate::ExpressionChange ExpressionEntry; QMutableListIterator<ExpressionEntry> expressionIterator(d->expressions); while (expressionIterator.hasNext()) { const ExpressionEntry &entry = expressionIterator.next(); - if (entry.first == name) { + if (entry.name == name) { expressionIterator.remove(); state()->removeEntryFromRevertList(object(), name); return; @@ -722,10 +750,10 @@ void QDeclarativePropertyChanges::removeProperty(const QByteArray &name) } } -QVariant QDeclarativePropertyChanges::value(const QByteArray &name) const +QVariant QDeclarativePropertyChanges::value(const QString &name) const { Q_D(const QDeclarativePropertyChanges); - typedef QPair<QByteArray, QVariant> PropertyEntry; + typedef QPair<QString, QVariant> PropertyEntry; QListIterator<PropertyEntry> propertyIterator(d->properties); while (propertyIterator.hasNext()) { @@ -738,16 +766,16 @@ QVariant QDeclarativePropertyChanges::value(const QByteArray &name) const return QVariant(); } -QString QDeclarativePropertyChanges::expression(const QByteArray &name) const +QString QDeclarativePropertyChanges::expression(const QString &name) const { Q_D(const QDeclarativePropertyChanges); - typedef QPair<QByteArray, QDeclarativeExpression *> ExpressionEntry; + typedef QDeclarativePropertyChangesPrivate::ExpressionChange ExpressionEntry; QListIterator<ExpressionEntry> expressionIterator(d->expressions); while (expressionIterator.hasNext()) { const ExpressionEntry &entry = expressionIterator.next(); - if (entry.first == name) { - return entry.second->expression(); + if (entry.name == name) { + return entry.expression->expression(); } } |