1 files changed, 30 insertions, 2 deletions

diff --git a/src/declarative/util/qdeclarativepropertychanges.cpp b/src/declarative/util/qdeclarativepropertychanges.cpp
index 4b2d5a0..a22c756 100644
--- a/src/declarative/util/qdeclarativepropertychanges.cpp
+++ b/src/declarative/util/qdeclarativepropertychanges.cpp
@@ -51,6 +51,7 @@
 #include <qdeclarativecontext.h>
 #include <qdeclarativeguard_p.h>
 #include <qdeclarativeproperty_p.h>
+#include <qdeclarativecontext_p.h>
 
 #include <QtCore/qdebug.h>
 
@@ -162,11 +163,15 @@ public:
 
     virtual void execute(Reason) {
         ownedExpression = QDeclarativePropertyPrivate::setSignalExpression(property, expression);
+        if (ownedExpression == expression)
+            ownedExpression = 0;
     }
 
     virtual bool isReversable() { return true; }
     virtual void reverse(Reason) {
         ownedExpression = QDeclarativePropertyPrivate::setSignalExpression(property, reverseExpression);
+        if (ownedExpression == reverseExpression)
+            ownedExpression = 0;
     }
 
     virtual void saveOriginals() {
@@ -174,11 +179,26 @@ public:
         reverseExpression = rewindExpression;
     }
 
+    virtual void copyOriginals(QDeclarativeActionEvent *other)
+    {
+        QDeclarativeReplaceSignalHandler *rsh = static_cast<QDeclarativeReplaceSignalHandler*>(other);
+        saveCurrentValues();
+        if (rsh == this)
+            return;
+        reverseExpression = rsh->reverseExpression;
+        if (rsh->ownedExpression == reverseExpression) {
+            ownedExpression = rsh->ownedExpression;
+            rsh->ownedExpression = 0;
+        }
+    }
+
     virtual void rewind() {
         ownedExpression = QDeclarativePropertyPrivate::setSignalExpression(property, rewindExpression);
+        if (ownedExpression == rewindExpression)
+            ownedExpression = 0;
     }
     virtual void saveCurrentValues() { 
-        rewindExpression = QDeclarativePropertyPrivate::signalExpression(property); 
+        rewindExpression = QDeclarativePropertyPrivate::signalExpression(property);
     }
 
     virtual bool override(QDeclarativeActionEvent*other) {
@@ -302,12 +322,18 @@ void QDeclarativePropertyChangesPrivate::decode()
         QDeclarativeProperty prop = property(name);      //### better way to check for signal property?
         if (prop.type() & QDeclarativeProperty::SignalProperty) {
             QDeclarativeExpression *expression = new QDeclarativeExpression(qmlContext(q), data.toString(), object);
+            QDeclarativeData *ddata = QDeclarativeData::get(q);
+            if (ddata && ddata->outerContext && !ddata->outerContext->url.isEmpty())
+                expression->setSourceLocation(ddata->outerContext->url.toString(), ddata->lineNumber);
             QDeclarativeReplaceSignalHandler *handler = new QDeclarativeReplaceSignalHandler;
             handler->property = prop;
             handler->expression = expression;
             signalReplacements << handler;
         } else if (isScript) {
             QDeclarativeExpression *expression = new QDeclarativeExpression(qmlContext(q), data.toString(), object);
+            QDeclarativeData *ddata = QDeclarativeData::get(q);
+            if (ddata && ddata->outerContext && !ddata->outerContext->url.isEmpty())
+                expression->setSourceLocation(ddata->outerContext->url.toString(), ddata->lineNumber);
             expressions << qMakePair(name, expression);
         } else {
             properties << qMakePair(name, data);
@@ -437,9 +463,11 @@ QDeclarativePropertyChanges::ActionList QDeclarativePropertyChanges::actions()
             if (d->isExplicit) {
                 a.toValue = d->expressions.at(ii).second->evaluate();
             } else {
+                QDeclarativeExpression *e = d->expressions.at(ii).second;
                 QDeclarativeBinding *newBinding = 
-                    new QDeclarativeBinding(d->expressions.at(ii).second->expression(), object(), qmlContext(this));
+                    new QDeclarativeBinding(e->expression(), object(), qmlContext(this));
                 newBinding->setTarget(prop);
+                newBinding->setSourceLocation(e->sourceFile(), e->lineNumber());
                 a.toBinding = newBinding;
                 a.deletableToBinding = true;
             }