src/quick/qtquick2.cpp

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  41
  42 #include "qtquick2_p.h"
  43 #include <private/qqmlengine_p.h>
  44 #include <private/qquickutilmodule_p.h>
  45 #include <private/qqmlvaluetype_p.h>
  46 #include <private/qquickitemsmodule_p.h>
  47 #include <private/qquickparticlesmodule_p.h>
  48 #include <private/qquickwindowmodule_p.h>
  49
  50 #include <private/qqmlenginedebugservice_p.h>
  51 #include <private/qqmldebugstatesdelegate_p.h>
  52 #include <private/qqmlbinding_p.h>
  53 #include <private/qqmlcontext_p.h>
  54 #include <QtQuick/private/qquickpropertychanges_p.h>
  55 #include <QtQuick/private/qquickstate_p.h>
  56 #include <qqmlproperty.h>
  57 #include <QtCore/QWeakPointer>
  58
  59 QT_BEGIN_NAMESPACE
  60
  61 class QQmlQtQuick2DebugStatesDelegate : public QQmlDebugStatesDelegate
  62 {
  63 public:
  64     QQmlQtQuick2DebugStatesDelegate();
  65     virtual ~QQmlQtQuick2DebugStatesDelegate();
  66     virtual void buildStatesList(QQmlContext *ctxt, bool cleanList);
  67     virtual void updateBinding(QQmlContext *context,
  68                                const QQmlProperty &property,
  69                                const QVariant &expression, bool isLiteralValue,
  70                                const QString &fileName, int line, int column,
  71                                bool *isBaseState);
  72     virtual bool setBindingForInvalidProperty(QObject *object,
  73                                               const QString &propertyName,
  74                                               const QVariant &expression,
  75                                               bool isLiteralValue);
  76     virtual void resetBindingForInvalidProperty(QObject *object,
  77                                                 const QString &propertyName);
  78
  79 private:
  80     void buildStatesList(QObject *obj);
  81
  82     QList<QWeakPointer<QQuickState> > m_allStates;
  83 };
  84
  85 QQmlQtQuick2DebugStatesDelegate::QQmlQtQuick2DebugStatesDelegate()
  86 {
  87 }
  88
  89 QQmlQtQuick2DebugStatesDelegate::~QQmlQtQuick2DebugStatesDelegate()
  90 {
  91 }
  92
  93 void QQmlQtQuick2DebugStatesDelegate::buildStatesList(QQmlContext *ctxt, bool cleanList)
  94 {
  95     if (cleanList)
  96         m_allStates.clear();
  97
  98     QQmlContextPrivate *ctxtPriv = QQmlContextPrivate::get(ctxt);
  99     for (int ii = 0; ii < ctxtPriv->instances.count(); ++ii) {
 100         buildStatesList(ctxtPriv->instances.at(ii));
 101     }
 102
 103     QQmlContextData *child = QQmlContextData::get(ctxt)->childContexts;
 104     while (child) {
 105         buildStatesList(child->asQQmlContext());
 106         child = child->nextChild;
 107     }
 108 }
 109
 110 void QQmlQtQuick2DebugStatesDelegate::buildStatesList(QObject *obj)
 111 {
 112     if (QQuickState *state = qobject_cast<QQuickState *>(obj)) {
 113         m_allStates.append(state);
 114     }
 115
 116     QObjectList children = obj->children();
 117     for (int ii = 0; ii < children.count(); ++ii) {
 118         buildStatesList(children.at(ii));
 119     }
 120 }
 121
 122 void QQmlQtQuick2DebugStatesDelegate::updateBinding(QQmlContext *context,
 123                                                             const QQmlProperty &property,
 124                                                             const QVariant &expression, bool isLiteralValue,
 125                                                             const QString &fileName, int line, int column,
 126                                                             bool *inBaseState)
 127 {
 128     QObject *object = property.object();
 129     QString propertyName = property.name();
 130     foreach (QWeakPointer<QQuickState> statePointer, m_allStates) {
 131         if (QQuickState *state = statePointer.data()) {
 132             // here we assume that the revert list on itself defines the base state
 133             if (state->isStateActive() && state->containsPropertyInRevertList(object, propertyName)) {
 134                 *inBaseState = false;
 135
 136                 QQmlBinding *newBinding = 0;
 137                 if (!isLiteralValue) {
 138                     newBinding = new QQmlBinding(expression.toString(), object, context);
 139                     newBinding->setTarget(property);
 140                     newBinding->setNotifyOnValueChanged(true);
 141                     newBinding->setSourceLocation(fileName, line, column);
 142                 }
 143
 144                 state->changeBindingInRevertList(object, propertyName, newBinding);
 145
 146                 if (isLiteralValue)
 147                     state->changeValueInRevertList(object, propertyName, expression);
 148             }
 149         }
 150     }
 151 }
 152
 153 bool QQmlQtQuick2DebugStatesDelegate::setBindingForInvalidProperty(QObject *object,
 154                                                                            const QString &propertyName,
 155                                                                            const QVariant &expression,
 156                                                                            bool isLiteralValue)
 157 {
 158     if (QQuickPropertyChanges *propertyChanges = qobject_cast<QQuickPropertyChanges *>(object)) {
 159         if (isLiteralValue)
 160             propertyChanges->changeValue(propertyName, expression);
 161         else
 162             propertyChanges->changeExpression(propertyName, expression.toString());
 163         return true;
 164     } else {
 165         return false;
 166     }
 167 }
 168
 169 void QQmlQtQuick2DebugStatesDelegate::resetBindingForInvalidProperty(QObject *object, const QString &propertyName)
 170 {
 171     if (QQuickPropertyChanges *propertyChanges = qobject_cast<QQuickPropertyChanges *>(object)) {
 172         propertyChanges->removeProperty(propertyName);
 173     }
 174 }
 175
 176
 177 void QQmlQtQuick2Module::defineModule()
 178 {
 179     QQuickUtilModule::defineModule();
 180     QQmlEnginePrivate::defineModule();
 181     QQuickItemsModule::defineModule();
 182     QQuickParticlesModule::defineModule();
 183     QQuickWindowModule::defineModule();
 184     QQmlValueTypeFactory::registerValueTypes();
 185
 186     if (QQmlEngineDebugService::isDebuggingEnabled()) {
 187         QQmlEngineDebugService::instance()->setStatesDelegate(
 188                     new QQmlQtQuick2DebugStatesDelegate);
 189     }
 190 }
 191
 192 QT_END_NAMESPACE
 193