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Diffstat (limited to 'src/declarative/qml/qdeclarativebinding.cpp')
| -rw-r--r-- | src/declarative/qml/qdeclarativebinding.cpp | 551 |
1 files changed, 0 insertions, 551 deletions
diff --git a/src/declarative/qml/qdeclarativebinding.cpp b/src/declarative/qml/qdeclarativebinding.cpp deleted file mode 100644 index 39032e0ca6..0000000000 --- a/src/declarative/qml/qdeclarativebinding.cpp +++ /dev/null @@ -1,551 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the QtDeclarative module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** 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. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qdeclarativebinding_p.h" -#include "qdeclarativebinding_p_p.h" - -#include "qdeclarative.h" -#include "qdeclarativecontext.h" -#include "qdeclarativeinfo.h" -#include "qdeclarativecompiler_p.h" -#include "qdeclarativedata_p.h" -#include <private/qdeclarativeprofilerservice_p.h> -#include <private/qdeclarativetrace_p.h> - -#include <QVariant> -#include <QtCore/qdebug.h> - -QT_BEGIN_NAMESPACE - -QDeclarativeAbstractBinding::QDeclarativeAbstractBinding() -: m_prevBinding(0), m_nextBinding(0) -{ -} - -QDeclarativeAbstractBinding::~QDeclarativeAbstractBinding() -{ - Q_ASSERT(m_prevBinding == 0); - Q_ASSERT(*m_mePtr == 0); -} - -/*! -Destroy the binding. Use this instead of calling delete. - -Bindings are free to implement their own memory management, so the delete operator is not -necessarily safe. The default implementation clears the binding, removes it from the object -and calls delete. -*/ -void QDeclarativeAbstractBinding::destroy() -{ - removeFromObject(); - clear(); - - delete this; -} - -/*! -Add this binding to \a object. - -This transfers ownership of the binding to the object, marks the object's property as -being bound. - -However, it does not enable the binding itself or call update() on it. -*/ -void QDeclarativeAbstractBinding::addToObject() -{ - Q_ASSERT(!m_prevBinding); - - QObject *obj = object(); - Q_ASSERT(obj); - - int index = propertyIndex(); - - QDeclarativeData *data = QDeclarativeData::get(obj, true); - - if (index & 0xFF000000) { - // Value type - - int coreIndex = index & 0xFFFFFF; - - // Find the value type proxy (if there is one) - QDeclarativeValueTypeProxyBinding *proxy = 0; - if (data->hasBindingBit(coreIndex)) { - QDeclarativeAbstractBinding *b = data->bindings; - while (b && b->propertyIndex() != coreIndex) - b = b->m_nextBinding; - Q_ASSERT(b && b->bindingType() == QDeclarativeAbstractBinding::ValueTypeProxy); - proxy = static_cast<QDeclarativeValueTypeProxyBinding *>(b); - } - - if (!proxy) { - proxy = new QDeclarativeValueTypeProxyBinding(obj, coreIndex); - - Q_ASSERT(proxy->propertyIndex() == coreIndex); - Q_ASSERT(proxy->object() == obj); - - proxy->addToObject(); - } - - m_nextBinding = proxy->m_bindings; - if (m_nextBinding) m_nextBinding->m_prevBinding = &m_nextBinding; - m_prevBinding = &proxy->m_bindings; - proxy->m_bindings = this; - - } else { - m_nextBinding = data->bindings; - if (m_nextBinding) m_nextBinding->m_prevBinding = &m_nextBinding; - m_prevBinding = &data->bindings; - data->bindings = this; - - data->setBindingBit(obj, index); - } -} - -/*! -Remove the binding from the object. -*/ -void QDeclarativeAbstractBinding::removeFromObject() -{ - if (m_prevBinding) { - int index = propertyIndex(); - - *m_prevBinding = m_nextBinding; - if (m_nextBinding) m_nextBinding->m_prevBinding = m_prevBinding; - m_prevBinding = 0; - m_nextBinding = 0; - - if (index & 0xFF000000) { - // Value type - we don't remove the proxy from the object. It will sit their happily - // doing nothing until it is removed by a write, a binding change or it is reused - // to hold more sub-bindings. - } else if (QObject *obj = object()) { - QDeclarativeData *data = QDeclarativeData::get(obj, false); - if (data) data->clearBindingBit(index); - } - } -} - -static void bindingDummyDeleter(QDeclarativeAbstractBinding *) -{ -} - -QDeclarativeAbstractBinding::Pointer QDeclarativeAbstractBinding::weakPointer() -{ - if (m_mePtr.value().isNull()) - m_mePtr.value() = QSharedPointer<QDeclarativeAbstractBinding>(this, bindingDummyDeleter); - - return m_mePtr.value().toWeakRef(); -} - -void QDeclarativeAbstractBinding::clear() -{ - if (!m_mePtr.isNull()) { - **m_mePtr = 0; - m_mePtr = 0; - } -} - -void QDeclarativeAbstractBinding::retargetBinding(QObject *, int) -{ - qFatal("QDeclarativeAbstractBinding::retargetBinding() called on illegal binding."); -} - -QString QDeclarativeAbstractBinding::expression() const -{ - return QLatin1String("<Unknown>"); -} - -void QDeclarativeAbstractBinding::setEnabled(bool enabled, QDeclarativePropertyPrivate::WriteFlags flags) -{ - if (enabled) update(flags); -} - -QDeclarativeBinding::Identifier QDeclarativeBinding::Invalid = -1; - -void QDeclarativeBindingPrivate::refresh() -{ - Q_Q(QDeclarativeBinding); - q->update(); -} - -QDeclarativeBindingPrivate::QDeclarativeBindingPrivate() -: updating(false), enabled(false), target(), targetProperty(0) -{ -} - -QDeclarativeBindingPrivate::~QDeclarativeBindingPrivate() -{ -} - -QDeclarativeBinding * -QDeclarativeBinding::createBinding(Identifier id, QObject *obj, QDeclarativeContext *ctxt, - const QString &url, int lineNumber, QObject *parent) -{ - if (id < 0) - return 0; - - QDeclarativeContextData *ctxtdata = QDeclarativeContextData::get(ctxt); - - QDeclarativeEnginePrivate *engine = QDeclarativeEnginePrivate::get(ctxt->engine()); - QDeclarativeCompiledData *cdata = 0; - QDeclarativeTypeData *typeData = 0; - if (engine && ctxtdata && !ctxtdata->url.isEmpty()) { - typeData = engine->typeLoader.get(ctxtdata->url); - cdata = typeData->compiledData(); - } - QDeclarativeBinding *rv = cdata ? new QDeclarativeBinding(cdata->primitives.at(id), true, obj, ctxtdata, url, lineNumber, 0, parent) : 0; - if (cdata) - cdata->release(); - if (typeData) - typeData->release(); - return rv; -} - -QDeclarativeBinding::QDeclarativeBinding(const QString &str, QObject *obj, QDeclarativeContext *ctxt, - QObject *parent) -: QDeclarativeExpression(QDeclarativeContextData::get(ctxt), obj, str, *new QDeclarativeBindingPrivate) -{ - setParent(parent); - setNotifyOnValueChanged(true); -} - -QDeclarativeBinding::QDeclarativeBinding(const QString &str, QObject *obj, QDeclarativeContextData *ctxt, - QObject *parent) -: QDeclarativeExpression(ctxt, obj, str, *new QDeclarativeBindingPrivate) -{ - setParent(parent); - setNotifyOnValueChanged(true); -} - -QDeclarativeBinding::QDeclarativeBinding(const QString &str, bool isRewritten, QObject *obj, - QDeclarativeContextData *ctxt, - const QString &url, int lineNumber, int columnNumber, - QObject *parent) -: QDeclarativeExpression(ctxt, obj, str, isRewritten, url, lineNumber, columnNumber, *new QDeclarativeBindingPrivate) -{ - setParent(parent); - setNotifyOnValueChanged(true); -} - -/*! - \internal - - To avoid exposing v8 in the public API, functionPtr must be a pointer to a v8::Handle<v8::Function>. - For example: - v8::Handle<v8::Function> function; - new QDeclarativeBinding(&function, scope, ctxt); - */ -QDeclarativeBinding::QDeclarativeBinding(void *functionPtr, QObject *obj, QDeclarativeContextData *ctxt, - QObject *parent) -: QDeclarativeExpression(ctxt, obj, functionPtr, *new QDeclarativeBindingPrivate) -{ - setParent(parent); - setNotifyOnValueChanged(true); -} - -QDeclarativeBinding::~QDeclarativeBinding() -{ -} - -void QDeclarativeBinding::setTarget(const QDeclarativeProperty &prop) -{ - Q_D(QDeclarativeBinding); - d->property = prop; - d->target = d->property.object(); - d->targetProperty = QDeclarativePropertyPrivate::get(d->property)->core.encodedIndex(); - - update(); -} - -void QDeclarativeBinding::setTarget(QObject *object, - const QDeclarativePropertyData &core, - QDeclarativeContextData *ctxt) -{ - Q_D(QDeclarativeBinding); - d->property = QDeclarativePropertyPrivate::restore(object, core, ctxt); - d->target = d->property.object(); - d->targetProperty = QDeclarativePropertyPrivate::get(d->property)->core.encodedIndex(); - - update(); -} - -QDeclarativeProperty QDeclarativeBinding::property() const -{ - Q_D(const QDeclarativeBinding); - return d->property; -} - -void QDeclarativeBinding::setEvaluateFlags(EvaluateFlags flags) -{ - Q_D(QDeclarativeBinding); - d->setRequiresThisObject(flags & RequiresThisObject); -} - -QDeclarativeBinding::EvaluateFlags QDeclarativeBinding::evaluateFlags() const -{ - Q_D(const QDeclarativeBinding); - return d->requiresThisObject()?RequiresThisObject:None; -} - -void QDeclarativeBinding::update(QDeclarativePropertyPrivate::WriteFlags flags) -{ - Q_D(QDeclarativeBinding); - - if (!d->enabled || !d->context() || !d->context()->isValid()) - return; - - QDeclarativeTrace trace("General Binding Update"); - trace.addDetail("URL", d->url); - trace.addDetail("Line", d->line); - trace.addDetail("Column", d->columnNumber); - - if (!d->updating) { - QDeclarativeBindingProfiler prof(d->url, d->line, d->column); - prof.addDetail(expression()); - d->updating = true; - - QDeclarativeAbstractExpression::DeleteWatcher watcher(d); - - if (d->property.propertyType() == qMetaTypeId<QDeclarativeBinding *>()) { - - int idx = d->property.index(); - Q_ASSERT(idx != -1); - - QDeclarativeBinding *t = this; - int status = -1; - void *a[] = { &t, 0, &status, &flags }; - QMetaObject::metacall(d->property.object(), - QMetaObject::WriteProperty, - idx, a); - - } else { - QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(d->context()->engine); - ep->referenceScarceResources(); - - bool isUndefined = false; - - v8::HandleScope handle_scope; - v8::Context::Scope scope(ep->v8engine()->context()); - v8::Local<v8::Value> result = d->v8value(0, &isUndefined); - - trace.event("writing binding result"); - - bool needsErrorData = false; - if (!watcher.wasDeleted() && !d->hasError()) - needsErrorData = !QDeclarativePropertyPrivate::writeBinding(d->property, d->context(), - d, result, - isUndefined, flags); - - if (!watcher.wasDeleted()) { - - if (needsErrorData) { - QUrl url = QUrl(d->url); - int line = d->line; - if (url.isEmpty()) url = QUrl(QLatin1String("<Unknown File>")); - - d->delayedError()->error.setUrl(url); - d->delayedError()->error.setLine(line); - d->delayedError()->error.setColumn(-1); - } - - if (d->hasError()) { - if (!d->delayedError()->addError(ep)) ep->warning(this->error()); - } else { - d->clearError(); - } - - } - - ep->dereferenceScarceResources(); - } - - if (!watcher.wasDeleted()) - d->updating = false; - } else { - QDeclarativeBindingPrivate::printBindingLoopError(d->property); - } -} - -void QDeclarativeBindingPrivate::printBindingLoopError(QDeclarativeProperty &prop) -{ - qmlInfo(prop.object()) << QDeclarativeBinding::tr("Binding loop detected for property \"%1\"").arg(prop.name()); -} - -void QDeclarativeBindingPrivate::expressionChanged() -{ - Q_Q(QDeclarativeBinding); - q->update(); -} - -void QDeclarativeBinding::setEnabled(bool e, QDeclarativePropertyPrivate::WriteFlags flags) -{ - Q_D(QDeclarativeBinding); - d->enabled = e; - setNotifyOnValueChanged(e); - - if (e) - update(flags); -} - -bool QDeclarativeBinding::enabled() const -{ - Q_D(const QDeclarativeBinding); - - return d->enabled; -} - -QString QDeclarativeBinding::expression() const -{ - return QDeclarativeExpression::expression(); -} - -int QDeclarativeBinding::propertyIndex() const -{ - Q_D(const QDeclarativeBinding); - return d->targetProperty; -} - -QObject *QDeclarativeBinding::object() const -{ - Q_D(const QDeclarativeBinding); - return d->target; -} - -void QDeclarativeBinding::retargetBinding(QObject *t, int i) -{ - Q_D(QDeclarativeBinding); - d->target = t; - d->targetProperty = i; -} - -QDeclarativeValueTypeProxyBinding::QDeclarativeValueTypeProxyBinding(QObject *o, int index) -: m_object(o), m_index(index), m_bindings(0) -{ -} - -QDeclarativeValueTypeProxyBinding::~QDeclarativeValueTypeProxyBinding() -{ - while (m_bindings) { - QDeclarativeAbstractBinding *binding = m_bindings; - binding->setEnabled(false, 0); - binding->destroy(); - } -} - -void QDeclarativeValueTypeProxyBinding::setEnabled(bool e, QDeclarativePropertyPrivate::WriteFlags flags) -{ - if (e) { - QDeclarativeAbstractBinding *bindings = m_bindings; - recursiveEnable(bindings, flags); - } else { - QDeclarativeAbstractBinding *bindings = m_bindings; - recursiveDisable(bindings); - } -} - -void QDeclarativeValueTypeProxyBinding::recursiveEnable(QDeclarativeAbstractBinding *b, QDeclarativePropertyPrivate::WriteFlags flags) -{ - if (!b) - return; - - recursiveEnable(b->m_nextBinding, flags); - - if (b) - b->setEnabled(true, flags); -} - -void QDeclarativeValueTypeProxyBinding::recursiveDisable(QDeclarativeAbstractBinding *b) -{ - if (!b) - return; - - recursiveDisable(b->m_nextBinding); - - if (b) - b->setEnabled(false, 0); -} - -void QDeclarativeValueTypeProxyBinding::update(QDeclarativePropertyPrivate::WriteFlags) -{ -} - -QDeclarativeAbstractBinding *QDeclarativeValueTypeProxyBinding::binding(int propertyIndex) -{ - QDeclarativeAbstractBinding *binding = m_bindings; - - while (binding && binding->propertyIndex() != propertyIndex) - binding = binding->m_nextBinding; - - return binding; -} - -/*! -Removes a collection of bindings, corresponding to the set bits in \a mask. -*/ -void QDeclarativeValueTypeProxyBinding::removeBindings(quint32 mask) -{ - QDeclarativeAbstractBinding *binding = m_bindings; - while (binding) { - if (mask & (1 << (binding->propertyIndex() >> 24))) { - QDeclarativeAbstractBinding *remove = binding; - binding = remove->m_nextBinding; - *remove->m_prevBinding = remove->m_nextBinding; - if (remove->m_nextBinding) remove->m_nextBinding->m_prevBinding = remove->m_prevBinding; - remove->m_prevBinding = 0; - remove->m_nextBinding = 0; - remove->destroy(); - } else { - binding = binding->m_nextBinding; - } - } -} - -int QDeclarativeValueTypeProxyBinding::propertyIndex() const -{ - return m_index; -} - -QObject *QDeclarativeValueTypeProxyBinding::object() const -{ - return m_object; -} - -QT_END_NAMESPACE |