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| package MyControls
{
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import mx.controls.Alert;
import mx.core.UIComponent;
public class itemSelector
{
public var _view:itemsSelector; // MVC (view connector)
public var _x1:uint; // selecting box start coordinates
public var _y1:uint;
public var _x2:uint; // selecting box end coordinates
public var _y2:uint;
public var _clickFlag:Boolean = false; // is Mousebutton down?
public var s:Sprite = new Sprite(); // to draw the rectangular box
public var c:UIComponent = new UIComponent(); // a surface to draw the sprite (box) inside
public var _SelectedItems:Array = new Array();
public var _totalItems:uint = 0; // number of items in the view
public var _ItemNo:uint;
// properties
public var _BoxColor:uint = 0x000000; // color of the Box (default = black)
public var _BoxThickness:uint = 1; // thickness of the Box (default = 1px)
public var _BoxAlpha:Number = 1.0; // alpha of the Box (default = 1.0)
// ------- Constructor -------
public function itemSelector(view:itemsSelector)
{
_x1 = 100;
_y1 = 100;
_x2 = 200;
_y2 = 200;
_view = view;
_view.addEventListener(MouseEvent.MOUSE_DOWN, mouseDownHandler);
_view.addEventListener(MouseEvent.MOUSE_UP, mouseUpHandler);
_view.addEventListener(MouseEvent.MOUSE_MOVE, mouseMove);
}
public function DrawSelectBox():void
{
s.graphics.clear();
s.graphics.lineStyle(_BoxThickness, _BoxColor, _BoxAlpha);
s.graphics.drawRect(_x1,_y1, (_x2-_x1), (_y2-_y1));
c.addChild(s);
//_view.myPanel.addElement(c);
_view.addElement(c);
}
///////////////////////// Listening Events CALLBACK functions //////////////////////////
////////////////////////////////////////////////////////////////////////////////////////
private function mouseDownHandler(e:MouseEvent):void
{
// get selection box start coordinates
_x1 = e.stageX;
_y1 = e.stageY;
_clickFlag = true;
}
private function mouseMove(e:MouseEvent):void
{
// get selection box start coordinates while Mouse is moving
_x2 = e.stageX;
_y2 = e.stageY;
if (_clickFlag == true)
DrawSelectBox(); // redraw this box, while mouse button is down
}
private function mouseUpHandler(e:MouseEvent):void
{
var i:uint = 0;
var j:uint = 0;
// clear selection box
_clickFlag = false;
s.graphics.clear();
// now get selected objects
_totalItems = _view.objArray.length;
_SelectedItems = []; // flush selected components array
for (i=0; i<_totalItems; i++)
{
if ( (_view.objArray[i].x > _x1 && _view.objArray[i].x < _x2 && _view.objArray[i].y > _y1 && _view.objArray[i].y < _y2)
|| (_view.objArray[i].x > _x1 && _view.objArray[i].x < _x2 && _view.objArray[i].y > _y2 && _view.objArray[i].y < _y1)
|| (_view.objArray[i].x > _x2 && _view.objArray[i].x < _x1 && _view.objArray[i].y > _y1 && _view.objArray[i].y < _y2)
|| (_view.objArray[i].x > _x2 && _view.objArray[i].x < _x1 && _view.objArray[i].y > _y2 && _view.objArray[i].y < _y1) )
{
_SelectedItems[j] = "Objet "+i.toString();
j++;
}
}
// fill datagrid with selected componenents...
_view.dgrid.dataProvider = _SelectedItems;
}
}
} |
