src/declarative/qml/qdeclarativenotifier.cpp

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  41
  42 #include "private/qdeclarativenotifier_p.h"
  43 #include "private/qdeclarativeproperty_p.h"
  44
  45 QT_BEGIN_NAMESPACE
  46
  47 void QDeclarativeNotifier::emitNotify(QDeclarativeNotifierEndpoint *endpoint)
  48 {
  49     QDeclarativeNotifierEndpoint::Notifier *n = endpoint->asNotifier();
  50
  51     QDeclarativeNotifierEndpoint **oldDisconnected = n->disconnected;
  52     n->disconnected = &endpoint;
  53
  54     if (n->next)
  55         emitNotify(n->next);
  56
  57     if (endpoint) {
  58         void *args[] = { 0 };
  59
  60         QMetaObject::metacall(endpoint->target, QMetaObject::InvokeMetaMethod,
  61                               endpoint->targetMethod, args);
  62
  63         if (endpoint)
  64             endpoint->asNotifier()->disconnected = oldDisconnected;
  65     }
  66
  67     if (oldDisconnected) *oldDisconnected = endpoint;
  68 }
  69
  70 void QDeclarativeNotifierEndpoint::connect(QObject *source, int sourceSignal)
  71 {
  72     Signal *s = toSignal();
  73
  74     if (s->source == source && s->sourceSignal == sourceSignal)
  75         return;
  76
  77     disconnect();
  78
  79     QDeclarativePropertyPrivate::connect(source, sourceSignal, target, targetMethod);
  80
  81     s->source = source;
  82     s->sourceSignal = sourceSignal;
  83 }
  84
  85 void QDeclarativeNotifierEndpoint::copyAndClear(QDeclarativeNotifierEndpoint &other)
  86 {
  87     other.disconnect();
  88
  89     other.target = target;
  90     other.targetMethod = targetMethod;
  91
  92     if (!isConnected())
  93         return;
  94
  95     if (SignalType == type) {
  96         Signal *other_s = other.toSignal();
  97         Signal *s = asSignal();
  98
  99         other_s->source = s->source;
 100         other_s->sourceSignal = s->sourceSignal;
 101         s->source = 0;
 102     } else if(NotifierType == type) {
 103         Notifier *other_n = other.toNotifier();
 104         Notifier *n = asNotifier();
 105
 106         other_n->notifier = n->notifier;
 107         other_n->disconnected = n->disconnected;
 108         if (other_n->disconnected) *other_n->disconnected = &other;
 109
 110         if (n->next) {
 111             other_n->next = n->next;
 112             n->next->asNotifier()->prev = &other_n->next;
 113         }
 114         other_n->prev = n->prev;
 115         *other_n->prev = &other;
 116
 117         n->prev = 0;
 118         n->next = 0;
 119         n->disconnected = 0;
 120         n->notifier = 0;
 121     }
 122 }
 123
 124
 125 QT_END_NAMESPACE
 126