QDeclarativeContextData Class Reference

#include <qdeclarativecontext_p.h>

Classes
struct	ContextGuard

Public Functions
void	addImportedScript (const QDeclarativeParser::Object::ScriptBlock &script)
void	addObject (QObject *)
QDeclarativeContext *	asQDeclarativeContext ()
QDeclarativeContextPrivate *	asQDeclarativeContextPrivate ()
void	clearContext ()
void	destroy ()
QString	findObjectId (const QObject *obj) const
void	invalidate ()
bool	isValid () const
	QDeclarativeContextData ()
	QDeclarativeContextData (QDeclarativeContext *)
void	refreshExpressions ()
QUrl	resolvedUrl (const QUrl &)
void	setIdProperty (int, QObject *)
void	setIdPropertyData (QDeclarativeIntegerCache *)
void	setParent (QDeclarativeContextData *)

Static Public Functions
static QDeclarativeContextData *	get (QDeclarativeContext *context)

Public Variables
QDeclarativeContextData *	childContexts
QDeclarativeComponentAttached *	componentAttached
QDeclarativeGuardedContextData *	contextGuards
QObject *	contextObject
QDeclarativeData *	contextObjects
QDeclarativeEngine *	engine
QDeclarativeAbstractExpression *	expressions
int	idValueCount
ContextGuard *	idValues
QList< QScriptValue >	importedScripts
QDeclarativeTypeNameCache *	imports
bool	isInternal
QDeclarativeContextData *	linkedContext
QDeclarativeContextData *	nextChild
QDeclarativeCompiledBindings *	optimizedBindings
QDeclarativeContextData *	parent
QDeclarativeContextData **	prevChild
QDeclarativeIntegerCache *	propertyNames
QDeclarativeContext *	publicContext
QUrl	url

Private Functions
	~QDeclarativeContextData ()

Detailed Description

Definition at line 110 of file qdeclarativecontext_p.h.

Constructors and Destructors

QDeclarativeContextData() [1/2]

QDeclarativeContextData::QDeclarativeContextData

(

)

Definition at line 503 of file qdeclarativecontext.cpp.

: parent(0), engine(0), isInternal(false), publicContext(0), propertyNames(0), contextObject(0),
  imports(0), childContexts(0), nextChild(0), prevChild(0), expressions(0), contextObjects(0),
  contextGuards(0), idValues(0), idValueCount(0), optimizedBindings(0), linkedContext(0),
  componentAttached(0)
{
}

QDeclarativeContextData() [2/2]

QDeclarativeContextData::QDeclarativeContextData

(

QDeclarativeContext *

ctxt

)

Definition at line 511 of file qdeclarativecontext.cpp.

: parent(0), engine(0), isInternal(false), publicContext(ctxt), propertyNames(0), contextObject(0),
  imports(0), childContexts(0), nextChild(0), prevChild(0), expressions(0), contextObjects(0),
  contextGuards(0), idValues(0), idValueCount(0), optimizedBindings(0), linkedContext(0),
  componentAttached(0)
{
}

~QDeclarativeContextData()

QDeclarativeContextData::~QDeclarativeContextData ( )

inlineprivate

Definition at line 208 of file qdeclarativecontext_p.h.

{}

Functions

addImportedScript()

void QDeclarativeContextData::addImportedScript

(

const QDeclarativeParser::Object::ScriptBlock &

script

)

Definition at line 668 of file qdeclarativecontext.cpp.

{
    if (!engine)
        return;

    QDeclarativeEnginePrivate *enginePriv = QDeclarativeEnginePrivate::get(engine);
    QScriptEngine *scriptEngine = QDeclarativeEnginePrivate::getScriptEngine(engine);

    const QString &code = script.code;
    const QString &url = script.file;
    const QDeclarativeParser::Object::ScriptBlock::Pragmas &pragmas = script.pragmas;

    Q_ASSERT(!url.isEmpty());

    if (pragmas & QDeclarativeParser::Object::ScriptBlock::Shared) {

        QHash<QString, QScriptValue>::Iterator iter = enginePriv->m_sharedScriptImports.find(url);
        if (iter == enginePriv->m_sharedScriptImports.end()) {
            QScriptContext *scriptContext = QScriptDeclarativeClass::pushCleanContext(scriptEngine);

            scriptContext->pushScope(enginePriv->contextClass->newUrlContext(url));
            scriptContext->pushScope(enginePriv->globalClass->staticGlobalObject());

            QScriptValue scope = QScriptDeclarativeClass::newStaticScopeObject(scriptEngine);
            scriptContext->pushScope(scope);

            scriptEngine->evaluate(code, url, 1);

            if (scriptEngine->hasUncaughtException()) {
                QDeclarativeError error;
                QDeclarativeExpressionPrivate::exceptionToError(scriptEngine, error);
                enginePriv->warning(error);
            }

            scriptEngine->popContext();

            iter = enginePriv->m_sharedScriptImports.insert(url, scope);
        }

        importedScripts.append(*iter);

    } else {

        QScriptContext *scriptContext = QScriptDeclarativeClass::pushCleanContext(scriptEngine);

        scriptContext->pushScope(enginePriv->contextClass->newUrlContext(this, 0, url));
        scriptContext->pushScope(enginePriv->globalClass->staticGlobalObject());

        QScriptValue scope = QScriptDeclarativeClass::newStaticScopeObject(scriptEngine);
        scriptContext->pushScope(scope);

        scriptEngine->evaluate(code, url, 1);

        if (scriptEngine->hasUncaughtException()) {
            QDeclarativeError error;
            QDeclarativeExpressionPrivate::exceptionToError(scriptEngine, error);
            enginePriv->warning(error);
        }

        scriptEngine->popContext();

        importedScripts.append(scope);

    }
}

addObject()

void QDeclarativeContextData::addObject

(

QObject *

o

)

Definition at line 652 of file qdeclarativecontext.cpp.

Referenced by QDeclarativeVME::run(), and QDeclarativeEngine::setContextForObject().

{
    QDeclarativeData *data = QDeclarativeData::get(o, true);

    Q_ASSERT(data->context == 0);

    data->context = this;
    data->outerContext = this;

    data->nextContextObject = contextObjects;
    if (data->nextContextObject)
        data->nextContextObject->prevContextObject = &data->nextContextObject;
    data->prevContextObject = &contextObjects;
    contextObjects = data;
}

asQDeclarativeContext()

QDeclarativeContext * QDeclarativeContextData::asQDeclarativeContext

(

)

Definition at line 765 of file qdeclarativecontext.cpp.

Referenced by QDeclarativeVMEMetaObject::aliasTarget(), asQDeclarativeContextPrivate(), QDeclarativeEngineDebugService::buildObjectList(), QDeclarativeVMEMetaObject::connectAlias(), QDeclarativeExpression::context(), QDeclarativeEngine::contextForObject(), QDeclarativeEnginePrivate::createQmlObject(), QDeclarativeCompiledBindingsPrivate::findgeneric(), QDeclarativeVMEMetaObject::metaCall(), and QDeclarativeContextScriptClass::property().

{
    if (!publicContext)
        publicContext = new QDeclarativeContext(this);
    return publicContext;
}

asQDeclarativeContextPrivate()

QDeclarativeContextPrivate * QDeclarativeContextData::asQDeclarativeContextPrivate

(

)

Definition at line 772 of file qdeclarativecontext.cpp.

Referenced by QDeclarativeComponentPrivate::begin(), QDeclarativeCompiledBindingsPrivate::findgeneric(), and QDeclarativeContextScriptClass::property().

{
    return QDeclarativeContextPrivate::get(asQDeclarativeContext());
}

clearContext()

void QDeclarativeContextData::clearContext

(

)

Definition at line 546 of file qdeclarativecontext.cpp.

Referenced by destroy(), and QDeclarativeVisualDataModel::release().

{
    if (engine) {
        while (componentAttached) {
            QDeclarativeComponentAttached *a = componentAttached;
            componentAttached = a->next;
            if (componentAttached) componentAttached->prev = &componentAttached;

            a->next = 0;
            a->prev = 0;

            emit a->destruction();
        }
    }

    QDeclarativeAbstractExpression *expression = expressions;
    while (expression) {
        QDeclarativeAbstractExpression *nextExpression = expression->m_nextExpression;

        expression->m_context = 0;
        expression->m_prevExpression = 0;
        expression->m_nextExpression = 0;

        expression = nextExpression;
    }
    expressions = 0;
}

destroy()

void QDeclarativeContextData::destroy

(

)

Definition at line 574 of file qdeclarativecontext.cpp.

Referenced by destroy(), and QDeclarativePrivate::qdeclarativeelement_destructor().

{
    if (linkedContext)
        linkedContext->destroy();

    if (engine) invalidate();

    clearContext();

    while (contextObjects) {
        QDeclarativeData *co = contextObjects;
        contextObjects = contextObjects->nextContextObject;

        co->context = 0;
        co->outerContext = 0;
        co->nextContextObject = 0;
        co->prevContextObject = 0;
    }

    QDeclarativeGuardedContextData *contextGuard = contextGuards;
    while (contextGuard) {
        QDeclarativeGuardedContextData *next = contextGuard->m_next;
        contextGuard->m_next = 0;
        contextGuard->m_prev = 0;
        contextGuard->m_contextData = 0;
        contextGuard = next;
    }
    contextGuards = 0;

    if (propertyNames)
        propertyNames->release();

    if (imports)
        imports->release();

    if (optimizedBindings)
        optimizedBindings->release();

    delete [] idValues;

    if (isInternal)
        delete publicContext;

    delete this;
}

findObjectId()

QString QDeclarativeContextData::findObjectId

(

const QObject *

obj

)

const

Definition at line 750 of file qdeclarativecontext.cpp.

Referenced by findObjectId(), and QDeclarativeEngineDebugService::objectData().

{
    if (!idValues || !propertyNames)
        return QString();

    for (int i=0; i<idValueCount; i++) {
        if (idValues[i] == obj)
            return propertyNames->findId(i);
    }

    if (linkedContext)
        return linkedContext->findObjectId(obj);
    return QString();
}

get()

static QDeclarativeContextData* QDeclarativeContextData::get ( QDeclarativeContext *  context )

inlinestatic

Definition at line 203 of file qdeclarativecontext_p.h.

Referenced by QDeclarativeComponent::beginCreate(), QDeclarativeEngineDebugService::buildObjectList(), QDeclarativeEngineDebugService::buildStatesList(), QDeclarativeBinding::createBinding(), QDeclarativeEngineDebugService::objectData(), QDeclarativeContext::QDeclarativeContext(), QDeclarativeExpression::QDeclarativeExpression(), QDeclarativeProperty::QDeclarativeProperty(), QDeclarativeEngine::setContextForObject(), and QDeclarativeEngineDebugService::setMethodBody().

                                                                      {
        return QDeclarativeContextPrivate::get(context)->data;
    }

invalidate()

void QDeclarativeContextData::invalidate

(

)

Definition at line 519 of file qdeclarativecontext.cpp.

Referenced by destroy(), and invalidate().

{
    while (childContexts)
        childContexts->invalidate();

    while (componentAttached) {
        QDeclarativeComponentAttached *a = componentAttached;
        componentAttached = a->next;
        if (componentAttached) componentAttached->prev = &componentAttached;

        a->next = 0;
        a->prev = 0;

        emit a->destruction();
    }

    if (prevChild) {
        *prevChild = nextChild;
        if (nextChild) nextChild->prevChild = prevChild;
        nextChild = 0;
        prevChild = 0;
    }

    engine = 0;
    parent = 0;
}

isValid()

bool QDeclarativeContextData::isValid ( ) const

inline

Definition at line 119 of file qdeclarativecontext_p.h.

Referenced by QDeclarativeComponentPrivate::beginCreate(), and QDeclarativeCompiledBindingsPrivate::run().

                                {
        return engine && (!isInternal || !contextObject || !QObjectPrivate::get(contextObject)->wasDeleted);
    }

refreshExpressions()

void QDeclarativeContextData::refreshExpressions

(

)

Definition at line 637 of file qdeclarativecontext.cpp.

Referenced by refreshExpressions(), and QDeclarativeContext::setContextProperty().

{
    QDeclarativeContextData *child = childContexts;
    while (child) {
        child->refreshExpressions();
        child = child->nextChild;
    }

    QDeclarativeAbstractExpression *expression = expressions;
    while (expression) {
        expression->refresh();
        expression = expression->m_nextExpression;
    }
}

resolvedUrl()

QUrl QDeclarativeContextData::resolvedUrl

(

const QUrl &

src

)

Definition at line 419 of file qdeclarativecontext.cpp.

Referenced by QDeclarativeEnginePrivate::createQmlObject(), QDeclarativeScriptEngine::resolvedUrl(), and QDeclarativePropertyPrivate::write().

{
    QDeclarativeContextData *ctxt = this;

    if (src.isRelative() && !src.isEmpty()) {
        if (ctxt) {
            while(ctxt) {
                if(ctxt->url.isValid())
                    break;
                else
                    ctxt = ctxt->parent;
            }

            if (ctxt)
                return ctxt->url.resolved(src);
            else if (engine)
                return engine->baseUrl().resolved(src);
        }
        return QUrl();
    } else {
        return src;
    }
}

setIdProperty()

void QDeclarativeContextData::setIdProperty	(	int	idx,
		QObject *	obj
	)

Definition at line 734 of file qdeclarativecontext.cpp.

Referenced by QDeclarativeVME::run().

{
    idValues[idx] = obj;
    idValues[idx].context = this;
}

setIdPropertyData()

void QDeclarativeContextData::setIdPropertyData

(

QDeclarativeIntegerCache *

data

)

Definition at line 740 of file qdeclarativecontext.cpp.

Referenced by QDeclarativeVME::run().

{
    Q_ASSERT(!propertyNames);
    propertyNames = data;
    propertyNames->addref();

    idValueCount = data->count();
    idValues = new ContextGuard[idValueCount];
}

setParent()

void QDeclarativeContextData::setParent

(

QDeclarativeContextData *

p

)

Definition at line 620 of file qdeclarativecontext.cpp.

Referenced by QDeclarativeComponentPrivate::begin().

{
    if (p) {
        parent = p;
        engine = p->engine;
        nextChild = p->childContexts;
        if (nextChild) nextChild->prevChild = &nextChild;
        prevChild = &p->childContexts;
        p->childContexts = this;
    }
}

Properties

childContexts

QDeclarativeContextData* QDeclarativeContextData::childContexts

Definition at line 158 of file qdeclarativecontext_p.h.

Referenced by QDeclarativeEngineDebugService::buildObjectList(), QDeclarativeEngineDebugService::buildStatesList(), invalidate(), refreshExpressions(), and setParent().

componentAttached

QDeclarativeComponentAttached* QDeclarativeContextData::componentAttached

Definition at line 198 of file qdeclarativecontext_p.h.

Referenced by clearContext(), QDeclarativeComponentPrivate::complete(), invalidate(), and QDeclarativeComponent::qmlAttachedProperties().

contextGuards

QDeclarativeGuardedContextData* QDeclarativeContextData::contextGuards

Definition at line 171 of file qdeclarativecontext_p.h.

Referenced by destroy(), and QDeclarativeGuardedContextData::setContextData().

contextObject

QObject* QDeclarativeContextData::contextObject

Definition at line 145 of file qdeclarativecontext_p.h.

Referenced by QDeclarativeContext::contextProperty(), QDeclarativeCompiledBindingsPrivate::findgeneric(), QDeclarativeContextScriptClass::queryProperty(), QDeclarativeVME::run(), QDeclarativeCompiledBindingsPrivate::run(), and QDeclarativeContext::setContextObject().

contextObjects

QDeclarativeData* QDeclarativeContextData::contextObjects

Definition at line 168 of file qdeclarativecontext_p.h.

Referenced by addObject(), destroy(), and QDeclarativeVME::run().

engine

QDeclarativeEngine* QDeclarativeContextData::engine

Definition at line 125 of file qdeclarativecontext_p.h.

Referenced by addImportedScript(), QDeclarativeComponentPrivate::begin(), QDeclarativeComponentPrivate::beginCreate(), clearContext(), QDeclarativeContext::contextProperty(), QDeclarativeBinding::createBinding(), destroy(), QDeclarativeExpressionPrivate::evalInObjectScope(), QDeclarativeCompiledBindingsPrivate::findgeneric(), QDeclarativeExpressionPrivate::init(), invalidate(), QDeclarativeVMEMetaObject::metaCall(), qmlExecuteDeferred(), QDeclarativeVMEMetaObject::readVarProperty(), QDeclarativeVMEMetaObject::readVarPropertyAsVariant(), QDeclarativePropertyPrivate::restore(), QDeclarativeVME::run(), QDeclarativeCompiledBindingsPrivate::run(), QDeclarativeContext::setContextProperty(), setParent(), and throwException().

expressions

QDeclarativeAbstractExpression* QDeclarativeContextData::expressions

Definition at line 165 of file qdeclarativecontext_p.h.

Referenced by clearContext(), refreshExpressions(), and QDeclarativeAbstractExpression::setContext().

idValueCount

int QDeclarativeContextData::idValueCount

Definition at line 186 of file qdeclarativecontext_p.h.

Referenced by findObjectId(), QDeclarativeContext::setContextProperty(), and setIdPropertyData().

idValues

ContextGuard* QDeclarativeContextData::idValues

Definition at line 185 of file qdeclarativecontext_p.h.

Referenced by QDeclarativeVMEMetaObject::aliasTarget(), QDeclarativeVMEMetaObject::connectAlias(), QDeclarativeContext::contextProperty(), destroy(), QDeclarativeCompiledBindingsPrivate::findgeneric(), findObjectId(), QDeclarativeVMEMetaObject::metaCall(), QDeclarativeContextScriptClass::property(), QDeclarativeCompiledBindingsPrivate::run(), setIdProperty(), setIdPropertyData(), and QDeclarativeCompiledBindingsPrivate::subscribeId().

importedScripts

QList<QScriptValue> QDeclarativeContextData::importedScripts

Definition at line 148 of file qdeclarativecontext_p.h.

Referenced by addImportedScript(), QDeclarativeComponentPrivate::begin(), and QDeclarativeContextScriptClass::property().

imports

QDeclarativeTypeNameCache* QDeclarativeContextData::imports

Definition at line 155 of file qdeclarativecontext_p.h.

Referenced by QDeclarativeComponentPrivate::begin(), destroy(), QDeclarativeContextScriptClass::queryProperty(), and QDeclarativeObjectScriptClass::queryProperty().

isInternal

bool QDeclarativeContextData::isInternal

Definition at line 138 of file qdeclarativecontext_p.h.

Referenced by QDeclarativeComponentPrivate::begin(), destroy(), QDeclarativeContext::setContextObject(), and QDeclarativeContext::setContextProperty().

linkedContext

QDeclarativeContextData* QDeclarativeContextData::linkedContext

Definition at line 194 of file qdeclarativecontext_p.h.

Referenced by destroy(), findObjectId(), and QDeclarativeVME::run().

nextChild

QDeclarativeContextData* QDeclarativeContextData::nextChild

Definition at line 161 of file qdeclarativecontext_p.h.

Referenced by QDeclarativeEngineDebugService::buildObjectList(), invalidate(), refreshExpressions(), and setParent().

optimizedBindings

QDeclarativeCompiledBindings* QDeclarativeContextData::optimizedBindings

Definition at line 191 of file qdeclarativecontext_p.h.

Referenced by destroy(), and QDeclarativeVME::run().

parent

QDeclarativeContextData* QDeclarativeContextData::parent

Definition at line 124 of file qdeclarativecontext_p.h.

Referenced by QDeclarativeContext::baseUrl(), QDeclarativeCompiledBindingsPrivate::findgeneric(), invalidate(), QDeclarativeContextScriptClass::queryProperty(), resolvedUrl(), QDeclarativeCompiledBindingsPrivate::run(), and setParent().

prevChild

QDeclarativeContextData** QDeclarativeContextData::prevChild

Definition at line 162 of file qdeclarativecontext_p.h.

Referenced by invalidate(), and setParent().

propertyNames

QDeclarativeIntegerCache* QDeclarativeContextData::propertyNames

Definition at line 142 of file qdeclarativecontext_p.h.

Referenced by QDeclarativeContext::contextProperty(), destroy(), QDeclarativeCompiledBindingsPrivate::findgeneric(), findObjectId(), QDeclarativeContextScriptClass::queryProperty(), QDeclarativeContext::setContextProperty(), and setIdPropertyData().

publicContext

QDeclarativeContext* QDeclarativeContextData::publicContext

Definition at line 139 of file qdeclarativecontext_p.h.

Referenced by asQDeclarativeContext(), and destroy().

url

QUrl QDeclarativeContextData::url

Definition at line 152 of file qdeclarativecontext_p.h.

Referenced by addImportedScript(), QDeclarativeContext::baseUrl(), QDeclarativeComponentPrivate::begin(), QDeclarativeConnections::connectSignals(), QDeclarativeBinding::createBinding(), QDeclarativeVMEMetaObject::method(), QDeclarativeEngineDebugService::objectData(), qmlExecuteDeferred(), resolvedUrl(), QDeclarativeEngineDebugService::setMethodBody(), throwException(), toUrl(), and QDeclarativeInfo::~QDeclarativeInfo().

---

The documentation for this class was generated from the following files:

• /src/declarative/qml/qdeclarativecontext_p.h
• /src/declarative/qml/qdeclarativecontext.cpp