mustella/tests/components/UIComponent/SWFs/UIComponent_Main.mxml

<?xml version="1.0" encoding="utf-8"?>
<!--

  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

-->
<mx:Application height="500" width="500"
    xmlns:mx="http://www.adobe.com/2006/mxml"
    xmlns:trix="*"
    backgroundColor="0xFFFFFF">

    <mx:Script>
        <![CDATA[

        import mx.core.DragSource;
        import mx.managers.DragManager;
        import mx.events.*;
        import mx.containers.Canvas;
        import mx.managers.ToolTipManager;

        // Initializes the drag and drop operation.
        public function mouseMoveHandler(event:MouseEvent):void {
            
            // Get the drag initiator component from the event object.
            var dragInitiator:Canvas=Canvas(event.currentTarget);
            
            // Get the color of the drag initiator component.
            var dragColor:int = dragInitiator.getStyle('backgroundColor');

            // Create a DragSource object.
            var ds:DragSource = new DragSource();

            // Add the data to the object.
            ds.addData(dragColor, 'color');

            // Call the DragManager doDrag() method to start the drag. 
            DragManager.doDrag(dragInitiator, ds, event);
        }

        // Called when the user moves the drag proxy onto the drop target.
        public function dragEnterHandler(event:DragEvent):void {

            // Accept the drag only if the user is dragging data 
            // identified by the 'color' format value.
            if (event.dragSource.hasFormat('color')) {

                // Get the drop target component from the event object.
                var dropTarget:Canvas=Canvas(event.currentTarget);
                // Accept the drop.
                DragManager.acceptDragDrop(dropTarget);
            }
        }
                
        // Called if the target accepts the dragged object and the user 
        // releases the mouse button while over the Canvas container. 
        public function dragDropHandler(event:DragEvent):void {

            // Get the data identified by the color format 
            // from the drag source.
            var data:Object = event.dragSource.dataForFormat('color');
            // Set the canvas color.
            myComponent.setStyle("backgroundColor", data);
        }
        
        public function dragOverHandler(event:DragEvent):void {
            //Do nothing
        }
        ]]>
    </mx:Script>

    <mx:states>
        <mx:State name="stateBlack">
            <mx:SetStyle target="{myComponent}" name="backgroundColor" value="#000000"/>
        </mx:State>
        <mx:State name="stateBlue">
            <mx:SetStyle target="{myComponent}" name="backgroundColor" value="#9999FF"/>
        </mx:State>
    </mx:states>


    <!-- Main app area -->
    <!-- A horizontal box with red and green canvases that the user can drag. -->
    <mx:HBox>
        <mx:Canvas id="myCanvas1"
            width="30" height="30"
            backgroundColor="red"
            borderStyle="solid"
            mouseMove="mouseMoveHandler(event);"/>
        <mx:Canvas id ="myCanvas2"
            width="30" height="30"
            backgroundColor="green"
            borderStyle="solid"
            mouseMove="mouseMoveHandler(event);"/>
    </mx:HBox>

    <!-- Handles dragEnter and dragDrop events to allow dropping. -->
    <trix:TrixUIComponent id="myComponent"
        width="100" 
        height="100" 
        backgroundColor="#9999FF" 
        borderStyle="solid" 
        borderColor="#000000" 
        dragEnter="dragEnterHandler(event);" 
        dragDrop="dragDropHandler(event);" />

</mx:Application>