Improve accessibility action support for Qt Quick

Add interface_cast for the action interface.
Implement actions for the following roles:
Button                           : Press
CheckBox, RadioButton            : Press, Check, Uncheck
Slider, Spinbox, Dial, ScrollBar : Increment, Decrement

Change-Id: Ic8e0d17c709ba51655f3f4b699092baf603b6f18
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@nokia.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/examples/quick/accessibility/content/Button.qml b/examples/quick/accessibility/content/Button.qml
index 2c203abe11..3d5086f741 100644
--- a/examples/quick/accessibility/content/Button.qml
+++ b/examples/quick/accessibility/content/Button.qml
@@ -49,6 +49,9 @@ Rectangle {
     Accessible.name: text
     Accessible.description: "This button does " + text
     Accessible.role: Accessible.Button
+    function accessiblePressAction() {
+        button.clicked()
+    }
 
     signal clicked
 
@@ -74,7 +77,7 @@ Rectangle {
         id: mouseArea
         anchors.fill: parent
         onClicked: {
-            checked = !checked;
+            parent.clicked()
         }
     }
 }