Allow reference to signals using 'on' handler syntax.

This will allow APIs like the following:
trigger: mouseArea.onClicked

However, signal handlers will not be callable from QML:
mouseArea.onClicked() //throws exception

Change-Id: I2ef5cb4e1f3ed4814ef590962391e1b14e3f0c43
Reviewed-on: http://codereview.qt.nokia.com/3683
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Aaron Kennedy <aaron.kennedy@nokia.com>

1 files changed, 60 insertions, 0 deletions

diff --git a/tests/auto/declarative/qdeclarativeecmascript/data/signalHandlers.qml b/tests/auto/declarative/qdeclarativeecmascript/data/signalHandlers.qml
new file mode 100644
index 0000000000..975be1b2ad
--- /dev/null
+++ b/tests/auto/declarative/qdeclarativeecmascript/data/signalHandlers.qml
@@ -0,0 +1,60 @@
+import Qt.test 1.0
+import QtQuick 2.0
+
+QtObject {
+    id: root
+
+    property int count: 0
+    signal testSignal
+    onTestSignal: count++
+
+    property int funcCount: 0
+    function testFunction() {
+        funcCount++;
+    }
+
+    //should increment count
+    function testSignalCall() {
+        testSignal()
+    }
+
+    //should NOT increment count, and should throw an exception
+    property string errorString
+    function testSignalHandlerCall() {
+        try {
+            onTestSignal()
+        } catch (error) {
+            errorString = error.toString();
+        }
+    }
+
+    //should increment funcCount once
+    function testSignalConnection() {
+        testSignal.connect(testFunction)
+        testSignal();
+        testSignal.disconnect(testFunction)
+        testSignal();
+    }
+
+    //should increment funcCount once
+    function testSignalHandlerConnection() {
+        onTestSignal.connect(testFunction)
+        testSignal();
+        onTestSignal.disconnect(testFunction)
+        testSignal();
+    }
+
+    //should be defined
+    property bool definedResult: false
+    function testSignalDefined() {
+        if (testSignal !== undefined)
+            definedResult = true;
+    }
+
+    //should be defined
+    property bool definedHandlerResult: false
+    function testSignalHandlerDefined() {
+        if (onTestSignal !== undefined)
+            definedHandlerResult = true;
+    }
+}