Change layer renderer on graphic click

ab1

Hi,

The goal is to change the symbol of the clicked graphic, and only the clicked graphic. So, I added a layer click listener to my feature layer:

protected function layer_clickHandler(event:MouseEvent):void    {     selectedGraphic = Graphic(event.target.parent.parent);     editTool.activate(EditTool.MOVE, [selectedGraphic]); // To detect when the graphic is moving          selectedGraphic.graphicsLayer.renderer = getRenderer(0x00FF00); // affects a custom renderer to the graphicsLayer. This is called each time a feature is clicked in order to set the symbol of previously clicked features to the original symbol.                                 // ... And then I change the symbol of the clicked graphic: selectedGraphic.    }

The behaviour I get is a bit awkward. When I click on a feature, its symbol changes. But when I click on a second feature, the symbol of the first feature doesn't change back to the original feature.

Am I missing something?

Regards.

YannCabon

Hi,

This is the normal behavior. To choose the right symbol to use to draw, the Graphic looks in this order:

• its symbol property
• Its owner layer renderer property
• Its owner layer symbol property
• or a default symbol

So to remove the selected symbol you have to explicitely set it to null on the previously selected Graphic.

Another good way to do it may be to create a renderer on the GraphicLayer and to implement the getSymbol function.
See the IRenderer interface.

As an example:

    public function getSymbol(graphic:Graphic):Symbol     {         if (graphic === mySelectedGraphic)         {             return selectedSymbol;         }         return otherSymbol;     }

Once you have changed the mySelectedGraphic value on this renderer, call refresh() on the layer or on the previously and newly selected Graphic.

Hope it helps.