source: code/Website/open-flash-chart/elements/labels/Keys.as@ 7937

package elements.labels {
        import charts.Base;
        import charts.ObjectCollection;
        import flash.display.Sprite;
        import flash.text.TextField;
        import flash.text.TextFormat;
        import org.flashdevelop.utils.FlashConnect;
        
        public class Keys extends Sprite {
                private var _height:Number = 0;
                private var count:Number = 0;
                public var colours:Array;
                
                public function Keys( stuff:ObjectCollection )
                {
                        this.colours = new Array();
                        
                        var key:Number = 0;
                        for each( var b:Base in stuff.sets )
                        {
                                for each( var o:Object in b.get_keys() ) {
                                        
                                        this.make_key( o.text, o['font-size'], o.colour );
                                        this.colours.push( o.colour );
                                        key++;

                                }
                        }
                        
                        this.count = key;
                }
                
                // each key is a MovieClip with text on it
                private function make_key( text:String, font_size:Number, colour:Number ) : void
                {

                        var tf:TextField = new TextField();
                        
                        tf.text = text;
                        var fmt:TextFormat = new TextFormat();
                        fmt.color = colour;
                        fmt.font = "Verdana";
                        fmt.size = font_size;
                        fmt.align = "left";
                        
                        tf.setTextFormat(fmt);
                        tf.autoSize="left";
                
                        this.addChild(tf);
                }
                
                //
                // draw the colour block for the data set
                //
                private function draw_line( x:Number, y:Number, height:Number, colour:Number ):Number {
                        y += (height / 2);
                        this.graphics.beginFill( colour, 100 );
                        this.graphics.drawRect( x, y - 1, 10, 2 );
                        this.graphics.endFill();
                        return x+12;
                }

                // shuffle the keys into place, keeping note of the total
                // height the key block has taken up
                public function resize( x:Number, y:Number ):void {
                        if( this.count == 0 )
                                return;
                        
                        this.x = x;
                        this.y = y;
                        
                        var height:Number = 0;
                        var x:Number = 0;
                        var y:Number = 0;
                        
                        this.graphics.clear();
                        
                        for( var i:Number=0; i<this.numChildren; i++ )
                        {
                                var width:Number = this.getChildAt(i).width;
                                
                                if( ( this.x + x + width + 12 ) > this.stage.stageWidth )
                                {
                                        // it is past the edge of the stage, so move it down a line
                                        x = 0;
                                        y += this.getChildAt(i).height;
                                        height += this.getChildAt(i).height;
                                }
                                        
                                this.draw_line( x, y, this.getChildAt(i).height, this.colours[i] );
                                x += 12;

                                this.getChildAt(i).x = x;
                                this.getChildAt(i).y = y;
                                
                                // move next key to the left + some padding between keys
                                x += width + 10;
                        }
                        
                        // Ugly code:
                        height += this.getChildAt(0).height;
                        this._height = height;
                }
                
                public function get_height() : Number {
                        return this._height;
                }
                
                public function die(): void {
                        
                        this.colours = null;
                
                        this.graphics.clear();
                        while ( this.numChildren > 0 )
                                this.removeChildAt(0);
                }
                
        }
}