(bb10) How to cancel an opening from context menu

I have a strange behavior with context menus.

I have two lists in my application with two context menus, a menu for each list.

I have a logic to determine if the popup should be launched or not, and if I don't stop ContextMenuEvent.OPENING event, this menu is not started. Fine. But after that, the menu popup stops working for the other list.

I think that something in the ContexMenu classes must be left in a bad state after preventDefault on the opening ceremony.

What will be the best way to stop to open a context menu and still works for the other components?

See the example...

package
{
    import flash.display.Bitmap;
    import flash.display.BitmapData;
    import flash.display.Sprite;
    import flash.display.StageAlign;
    import flash.display.StageScaleMode;
    import flash.events.Event;

    import qnx.fuse.ui.actionbar.ActionBar;
    import qnx.fuse.ui.core.Action;
    import qnx.fuse.ui.core.ActionBase;
    import qnx.fuse.ui.core.ActionSet;
    import qnx.fuse.ui.core.TabAction;
    import qnx.fuse.ui.events.ContextMenuEvent;
    import qnx.fuse.ui.events.DragEvent;
    import qnx.fuse.ui.listClasses.List;
    import qnx.ui.data.DataProvider;

    public class TestPush extends Sprite
    {
        private var actionBarOverflow:Sprite;
        private var content:Sprite = new Sprite();

        private var slideX:Number = 0;

        public function TestPush()
        {

            super();

            // support autoOrients
            stage.align = StageAlign.TOP_LEFT;
            stage.scaleMode = StageScaleMode.NO_SCALE;
            stage.addEventListener( Event.RESIZE, function( e:Event ):void
            {
                actBar.y = stage.stageHeight - actBar.height;
            } );

            content.addChild( new Bitmap( new BitmapData( stage.stageWidth, stage.stageHeight, false, 0xffffff ) ) );
            // support autoOrients
            stage.align = StageAlign.TOP_LEFT;
            stage.scaleMode = StageScaleMode.NO_SCALE;

            var dp:DataProvider=new DataProvider();
            dp.addItem({"label":"item1"});
            dp.addItem({"label":"item2"});
            dp.addItem({"label":"item3"});
            dp.addItem({"label":"item4"});
            dp.addItem({"label":"item5"});
            dp.addItem({"label":"item6"});
            dp.addItem({"label":"item7"});
            dp.addItem({"label":"item8"});
            dp.addItem({"label":"item9"});
            dp.addItem({"label":"item10"});
            var list:List=new List();
            list.dataProvider=dp;

            actionBarOverflow = new Sprite();

            var actBar:ActionBar=new ActionBar();
            actBar.showTabsFirstOnBar(false);
            actBar.reserveActionSpace(true);
            actBar.backButton = null; 

            actBar.tabOverflowParent = actionBarOverflow;
            actBar.width=stage.stageWidth;
            actBar.showTabsFirstOnBar(false);
            actBar.addAction(new TabAction("TEST"));
            actBar.addAction(new TabAction("TEST2"));
            actBar.addAction(new Action("Test1"));
            actBar.addAction(new Action("Test2"));
            actBar.addAction(new Action("Test3"));

            var list2:List=new List();
            list2.dataProvider=dp;

            addChild(actionBarOverflow);
            addChild( content );
            content.addChild(list);
            content.addChild(list2);
            content.addChild(actBar);

            actBar.x=0;
            actBar.y=stage.stageHeight-actBar.height;

            list.width=list2.width=stage.stageWidth;
            list.x=list2.x=0;
            list.height=(stage.stageHeight-actBar.height)/2;
            list2.height=(stage.stageHeight-actBar.height)/2;
            list.y=0;
            list2.y=list.height;

            list.addEventListener(ContextMenuEvent.OPENING, contextOpening);

            var actionsForBar:Vector. = new Vector.;
            actionsForBar.push(new ActionBase("Action 1"));
            actionsForBar.push(new ActionBase("Action 2"));
            var actionset:ActionSet=new ActionSet(actionsForBar);
            var contextactions:Vector.=new Vector.();
            contextactions.push(actionset);

            var actionsForBar2:Vector. = new Vector.;
            actionsForBar2.push(new ActionBase("Action 3"));
            actionsForBar2.push(new ActionBase("Action 4"));
            var actionset2:ActionSet=new ActionSet(actionsForBar2);
            var contextactions2:Vector.=new Vector.();
            contextactions2.push(actionset2);

            list.contextActions=contextactions;
            list2.contextActions=contextactions2;

            actBar.addEventListener( DragEvent.DRAG_MOVE, onDragMove );
        }

        private function contextOpening(e:ContextMenuEvent):void{
            trace("CANCEL OPENING");
            e.preventDefault();
        }

        private function onDragMove( event:DragEvent ):void
        {
            slideX += event.deltaX;
            content.x = Math.round( slideX + stage.stageWidth );
        }
    }
}

Although strobejb could be a solution, it involves a lot of changes to my code at the moment, but I think I found a good solution.

Instead of dealing with ContextMenu I forget and override onLongPress extension from the list.

override protected function onLongPress (): void {}

}

And if I have to display the context menu I can make inside the method with:

showContextMenu()

Tags: BlackBerry Developers

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(bb10) How to cancel an opening from context menu

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