diff options
Diffstat (limited to 'src/qml/qml/qqmlbinding.cpp')
| -rw-r--r-- | src/qml/qml/qqmlbinding.cpp | 267 |
1 files changed, 148 insertions, 119 deletions
diff --git a/src/qml/qml/qqmlbinding.cpp b/src/qml/qml/qqmlbinding.cpp index 23f5abf5fd..f43822ed0e 100644 --- a/src/qml/qml/qqmlbinding.cpp +++ b/src/qml/qml/qqmlbinding.cpp @@ -40,7 +40,6 @@ ****************************************************************************/ #include "qqmlbinding_p.h" -#include "qqmlbinding_p_p.h" #include "qqml.h" #include "qqmlcontext.h" @@ -49,6 +48,8 @@ #include "qqmldata_p.h" #include <private/qqmlprofilerservice_p.h> #include <private/qqmltrace_p.h> +#include <private/qqmlexpression_p.h> +#include <private/qqmlrewrite_p.h> #include <QVariant> #include <QtCore/qdebug.h> @@ -57,24 +58,9 @@ QT_BEGIN_NAMESPACE QQmlBinding::Identifier QQmlBinding::Invalid = -1; -void QQmlBindingPrivate::refresh() -{ - Q_Q(QQmlBinding); - q->update(); -} - -QQmlBindingPrivate::QQmlBindingPrivate() -: updating(false), enabled(false), target(), targetProperty(0) -{ -} - -QQmlBindingPrivate::~QQmlBindingPrivate() -{ -} - QQmlBinding * QQmlBinding::createBinding(Identifier id, QObject *obj, QQmlContext *ctxt, - const QString &url, int lineNumber, QObject *parent) + const QString &url, int lineNumber) { if (id < 0) return 0; @@ -88,7 +74,8 @@ QQmlBinding::createBinding(Identifier id, QObject *obj, QQmlContext *ctxt, typeData = engine->typeLoader.get(ctxtdata->url); cdata = typeData->compiledData(); } - QQmlBinding *rv = cdata ? new QQmlBinding(cdata->primitives.at(id), true, obj, ctxtdata, url, lineNumber, 0, parent) : 0; + QQmlBinding *rv = cdata ? new QQmlBinding(cdata->primitives.at(id), true, obj, ctxtdata, + url, lineNumber, 0) : 0; if (cdata) cdata->release(); if (typeData) @@ -96,30 +83,62 @@ QQmlBinding::createBinding(Identifier id, QObject *obj, QQmlContext *ctxt, return rv; } -QQmlBinding::QQmlBinding(const QString &str, QObject *obj, QQmlContext *ctxt, - QObject *parent) -: QQmlExpression(QQmlContextData::get(ctxt), obj, str, *new QQmlBindingPrivate) +static QQmlJavaScriptExpression::VTable QQmlBinding_jsvtable = { + QQmlBinding::expressionIdentifier, + QQmlBinding::expressionChanged +}; + +QQmlBinding::QQmlBinding(const QString &str, QObject *obj, QQmlContext *ctxt) +: QQmlJavaScriptExpression(&QQmlBinding_jsvtable), m_lineNumber(-1), m_columnNumber(-1) { - setParent(parent); setNotifyOnValueChanged(true); + QQmlAbstractExpression::setContext(QQmlContextData::get(ctxt)); + setScopeObject(obj); + + QQmlRewrite::RewriteBinding rewriteBinding; + QString code = rewriteBinding(str); + + m_expression = str.toUtf8(); + v8function = evalFunction(context(), obj, code, QString(), 0); } -QQmlBinding::QQmlBinding(const QString &str, QObject *obj, QQmlContextData *ctxt, - QObject *parent) -: QQmlExpression(ctxt, obj, str, *new QQmlBindingPrivate) +QQmlBinding::QQmlBinding(const QString &str, QObject *obj, QQmlContextData *ctxt) +: QQmlJavaScriptExpression(&QQmlBinding_jsvtable), m_lineNumber(-1), m_columnNumber(-1) { - setParent(parent); setNotifyOnValueChanged(true); + QQmlAbstractExpression::setContext(ctxt); + setScopeObject(obj); + + QQmlRewrite::RewriteBinding rewriteBinding; + QString code = rewriteBinding(str); + + m_expression = str.toUtf8(); + v8function = evalFunction(ctxt, obj, code, QString(), 0); } QQmlBinding::QQmlBinding(const QString &str, bool isRewritten, QObject *obj, - QQmlContextData *ctxt, - const QString &url, int lineNumber, int columnNumber, - QObject *parent) -: QQmlExpression(ctxt, obj, str, isRewritten, url, lineNumber, columnNumber, *new QQmlBindingPrivate) + QQmlContextData *ctxt, + const QString &url, int lineNumber, int columnNumber) +: QQmlJavaScriptExpression(&QQmlBinding_jsvtable), m_lineNumber(-1), m_columnNumber(-1) { - setParent(parent); setNotifyOnValueChanged(true); + QQmlAbstractExpression::setContext(ctxt); + setScopeObject(obj); + + QString code; + if (isRewritten) { + code = str; + } else { + QQmlRewrite::RewriteBinding rewriteBinding; + code = rewriteBinding(str); + } + + m_url = url; + m_lineNumber = lineNumber; + m_columnNumber = columnNumber; + m_expression = str.toUtf8(); + + v8function = evalFunction(ctxt, obj, code, url, lineNumber); } /*! @@ -130,124 +149,100 @@ QQmlBinding::QQmlBinding(const QString &str, bool isRewritten, QObject *obj, v8::Handle<v8::Function> function; new QQmlBinding(&function, scope, ctxt); */ -QQmlBinding::QQmlBinding(void *functionPtr, QObject *obj, QQmlContextData *ctxt, - QObject *parent) -: QQmlExpression(ctxt, obj, functionPtr, *new QQmlBindingPrivate) +QQmlBinding::QQmlBinding(void *functionPtr, QObject *obj, QQmlContextData *ctxt, + const QString &url, int lineNumber, int columnNumber) +: QQmlJavaScriptExpression(&QQmlBinding_jsvtable), + m_url(url), m_lineNumber(lineNumber), m_columnNumber(columnNumber) { - setParent(parent); setNotifyOnValueChanged(true); -} - -QQmlBinding::~QQmlBinding() -{ -} + QQmlAbstractExpression::setContext(ctxt); + setScopeObject(obj); -void QQmlBinding::setTarget(const QQmlProperty &prop) -{ - Q_D(QQmlBinding); - d->property = prop; - d->target = d->property.object(); - d->targetProperty = QQmlPropertyPrivate::get(d->property)->core.encodedIndex(); - - update(); + v8function = qPersistentNew<v8::Function>(*(v8::Handle<v8::Function> *)functionPtr); } -void QQmlBinding::setTarget(QObject *object, - const QQmlPropertyData &core, - QQmlContextData *ctxt) +QQmlBinding::~QQmlBinding() { - Q_D(QQmlBinding); - d->property = QQmlPropertyPrivate::restore(object, core, ctxt); - d->target = d->property.object(); - d->targetProperty = QQmlPropertyPrivate::get(d->property)->core.encodedIndex(); - - update(); + qPersistentDispose(v8function); } -QQmlProperty QQmlBinding::property() const +void QQmlBinding::setEvaluateFlags(EvaluateFlags flags) { - Q_D(const QQmlBinding); - return d->property; + setRequiresThisObject(flags & RequiresThisObject); } -void QQmlBinding::setEvaluateFlags(EvaluateFlags flags) +QQmlBinding::EvaluateFlags QQmlBinding::evaluateFlags() const { - Q_D(QQmlBinding); - d->setRequiresThisObject(flags & RequiresThisObject); + return requiresThisObject()?RequiresThisObject:None; } -QQmlBinding::EvaluateFlags QQmlBinding::evaluateFlags() const +void QQmlBinding::setNotifyOnValueChanged(bool v) { - Q_D(const QQmlBinding); - return d->requiresThisObject()?RequiresThisObject:None; + QQmlJavaScriptExpression::setNotifyOnValueChanged(v); } void QQmlBinding::update(QQmlPropertyPrivate::WriteFlags flags) { - Q_D(QQmlBinding); - - if (!d->enabled || !d->context() || !d->context()->isValid()) + if (!enabledFlag() || !context() || !context()->isValid()) return; QQmlTrace trace("General Binding Update"); - trace.addDetail("URL", d->url); - trace.addDetail("Line", d->line); - trace.addDetail("Column", d->columnNumber); + trace.addDetail("URL", m_url); + trace.addDetail("Line", m_lineNumber); + trace.addDetail("Column", m_columnNumber); - if (!d->updating) { - QQmlBindingProfiler prof(d->url, d->line, d->column); + if (!updatingFlag()) { + QQmlBindingProfiler prof(m_url, m_lineNumber, m_columnNumber); if (prof.enabled) prof.addDetail(expression()); - d->updating = true; + setUpdatingFlag(true); - QQmlAbstractExpression::DeleteWatcher watcher(d); + QQmlAbstractExpression::DeleteWatcher watcher(this); - if (d->property.propertyType() == qMetaTypeId<QQmlBinding *>()) { + if (m_core.propType == qMetaTypeId<QQmlBinding *>()) { - int idx = d->property.index(); + int idx = m_core.coreIndex; Q_ASSERT(idx != -1); QQmlBinding *t = this; int status = -1; void *a[] = { &t, 0, &status, &flags }; - QMetaObject::metacall(d->property.object(), - QMetaObject::WriteProperty, - idx, a); + QMetaObject::metacall(*m_coreObject, QMetaObject::WriteProperty, idx, a); } else { - QQmlEnginePrivate *ep = QQmlEnginePrivate::get(d->context()->engine); + QQmlEnginePrivate *ep = QQmlEnginePrivate::get(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); + v8::Local<v8::Value> result = + QQmlJavaScriptExpression::evaluate(context(), v8function, &isUndefined); trace.event("writing binding result"); bool needsErrorData = false; - if (!watcher.wasDeleted() && !d->hasError()) - needsErrorData = !QQmlPropertyPrivate::writeBinding(d->property, d->context(), - d, result, - isUndefined, flags); + if (!watcher.wasDeleted() && !hasError()) + needsErrorData = !QQmlPropertyPrivate::writeBinding(*m_coreObject, m_core, context(), + this, result, isUndefined, flags); if (!watcher.wasDeleted()) { if (needsErrorData) { - QUrl url = QUrl(d->url); - int line = d->line; + QUrl url = QUrl(m_url); + if (url.isEmpty()) url = QUrl(QLatin1String("<Unknown File>")); - d->delayedError()->error.setUrl(url); - d->delayedError()->error.setLine(line); - d->delayedError()->error.setColumn(-1); + delayedError()->error.setUrl(url); + delayedError()->error.setLine(m_lineNumber); + delayedError()->error.setColumn(m_columnNumber); } - if (d->hasError()) { - if (!d->delayedError()->addError(ep)) ep->warning(this->error()); + if (hasError()) { + if (!delayedError()->addError(ep)) ep->warning(this->error()); } else { - d->clearError(); + clearError(); } } @@ -256,62 +251,96 @@ void QQmlBinding::update(QQmlPropertyPrivate::WriteFlags flags) } if (!watcher.wasDeleted()) - d->updating = false; + setUpdatingFlag(false); } else { - QQmlBindingPrivate::printBindingLoopError(d->property); + QQmlProperty p = property(); + QQmlAbstractBinding::printBindingLoopError(p); } } -void QQmlBindingPrivate::printBindingLoopError(QQmlProperty &prop) +QVariant QQmlBinding::evaluate() +{ + QQmlEnginePrivate *ep = QQmlEnginePrivate::get(context()->engine); + ep->referenceScarceResources(); + + bool isUndefined = false; + + v8::HandleScope handle_scope; + v8::Context::Scope scope(ep->v8engine()->context()); + v8::Local<v8::Value> result = + QQmlJavaScriptExpression::evaluate(context(), v8function, &isUndefined); + + ep->dereferenceScarceResources(); + + return ep->v8engine()->toVariant(result, qMetaTypeId<QList<QObject*> >()); +} + +QString QQmlBinding::expressionIdentifier(QQmlJavaScriptExpression *e) { - qmlInfo(prop.object()) << QQmlBinding::tr("Binding loop detected for property \"%1\"").arg(prop.name()); + QQmlBinding *This = static_cast<QQmlBinding *>(e); + + return QLatin1String("\"") + QString::fromUtf8(This->m_expression) + QLatin1String("\""); } -void QQmlBindingPrivate::expressionChanged() +void QQmlBinding::expressionChanged(QQmlJavaScriptExpression *e) { - Q_Q(QQmlBinding); - q->update(); + QQmlBinding *This = static_cast<QQmlBinding *>(e); + This->update(); +} + +void QQmlBinding::refresh() +{ + update(); } void QQmlBinding::setEnabled(bool e, QQmlPropertyPrivate::WriteFlags flags) { - Q_D(QQmlBinding); - d->enabled = e; + setEnabledFlag(e); setNotifyOnValueChanged(e); if (e) update(flags); } -bool QQmlBinding::enabled() const +QString QQmlBinding::expression() const { - Q_D(const QQmlBinding); - - return d->enabled; + return QString::fromUtf8(m_expression); } -QString QQmlBinding::expression() const +QObject *QQmlBinding::object() const { - return QQmlExpression::expression(); + if (m_coreObject.hasValue()) return m_coreObject.constValue()->target; + else return *m_coreObject; } int QQmlBinding::propertyIndex() const { - Q_D(const QQmlBinding); - return d->targetProperty; + if (m_coreObject.hasValue()) return m_coreObject.constValue()->targetProperty; + else return m_core.encodedIndex(); } -QObject *QQmlBinding::object() const +void QQmlBinding::retargetBinding(QObject *t, int i) { - Q_D(const QQmlBinding); - return d->target; + m_coreObject.value().target = t; + m_coreObject.value().targetProperty = i; } -void QQmlBinding::retargetBinding(QObject *t, int i) +void QQmlBinding::setTarget(const QQmlProperty &prop) +{ + setTarget(prop.object(), QQmlPropertyPrivate::get(prop)->core, + QQmlPropertyPrivate::get(prop)->context); +} + +void QQmlBinding::setTarget(QObject *object, const QQmlPropertyData &core, QQmlContextData *ctxt) +{ + m_coreObject = object; + m_core = core; + m_ctxt = ctxt; +} + +QQmlProperty QQmlBinding::property() const { - Q_D(QQmlBinding); - d->target = t; - d->targetProperty = i; + return QQmlPropertyPrivate::restore(object(), m_core, *m_ctxt); } QT_END_NAMESPACE |