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(), false, object,
 139                                                  QQmlContextData::get(context), fileName,
 140                                                  line, column);
 141                     newBinding->setTarget(property);
 142                     newBinding->setNotifyOnValueChanged(true);
 143                 }
 144
 145                 state->changeBindingInRevertList(object, propertyName, newBinding);
 146
 147                 if (isLiteralValue)
 148                     state->changeValueInRevertList(object, propertyName, expression);
 149             }
 150         }
 151     }
 152 }
 153
 154 bool QQmlQtQuick2DebugStatesDelegate::setBindingForInvalidProperty(QObject *object,
 155                                                                            const QString &propertyName,
 156                                                                            const QVariant &expression,
 157                                                                            bool isLiteralValue)
 158 {
 159     if (QQuickPropertyChanges *propertyChanges = qobject_cast<QQuickPropertyChanges *>(object)) {
 160         if (isLiteralValue)
 161             propertyChanges->changeValue(propertyName, expression);
 162         else
 163             propertyChanges->changeExpression(propertyName, expression.toString());
 164         return true;
 165     } else {
 166         return false;
 167     }
 168 }
 169
 170 void QQmlQtQuick2DebugStatesDelegate::resetBindingForInvalidProperty(QObject *object, const QString &propertyName)
 171 {
 172     if (QQuickPropertyChanges *propertyChanges = qobject_cast<QQuickPropertyChanges *>(object)) {
 173         propertyChanges->removeProperty(propertyName);
 174     }
 175 }
 176
 177
 178 void QQmlQtQuick2Module::defineModule()
 179 {
 180     QQuickUtilModule::defineModule();
 181     QQmlEnginePrivate::defineModule();
 182     QQuickItemsModule::defineModule();
 183     QQuickParticlesModule::defineModule();
 184     QQuickWindowModule::defineModule();
 185     QQmlValueTypeFactory::registerValueTypes();
 186
 187     if (QQmlEngineDebugService::isDebuggingEnabled()) {
 188         QQmlEngineDebugService::instance()->setStatesDelegate(
 189                     new QQmlQtQuick2DebugStatesDelegate);
 190     }
 191 }
 192
 193 QT_END_NAMESPACE
 194