automation_tests/src/UnitTest/Helpers/SingleContainer.as

////////////////////////////////////////////////////////////////////////////////
//
//  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.
//
////////////////////////////////////////////////////////////////////////////////
package UnitTest.Helpers
{
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.events.MouseEvent;
    import flash.system.System;
    import flash.text.TextField;
    import flash.text.TextFormat;

    import flashx.textLayout.container.ContainerController;
    import flashx.textLayout.edit.EditManager;
    import flashx.textLayout.elements.DivElement;
    import flashx.textLayout.elements.InlineGraphicElement;
    import flashx.textLayout.elements.ParagraphElement;
    import flashx.textLayout.elements.SpanElement;
    import flashx.textLayout.elements.TextFlow;
    import flashx.textLayout.tlf_internal;
    import flashx.undo.UndoManager;

    use namespace tlf_internal;

    [SWF(width="500", height="700", backgroundColor="#FFFFFF")]

    public class SingleContainer extends Sprite
    {

        protected var tf:TextFlow;
        protected var em:EditManager;
        protected var um:UndoManager
        protected var _bg:Sprite;
        protected var _spr:Sprite;
        protected var _cc:ContainerController;
        protected var _btn:Sprite;
        protected var _playing:Boolean = false;
        protected var _count:int = 0;

        protected var _graph:Sprite;
        protected var _print_out:TextField;
        protected var _last_time:Date = new Date();
        protected var _last_five:Array = [];

        public function SingleContainer()
        {

            //			stage.scaleMode = StageScaleMode.NO_SCALE;
            //			stage.align = StageAlign.TOP_LEFT;

            var cw:Number = 200; // the container width
            var ch:Number = 600;  // the container height

            _bg = new Sprite();
            _bg.graphics.lineStyle(.25, 0);
            _bg.graphics.drawRect(0, 0, cw, ch);
            addChild(_bg);

            _spr = new Sprite();
            addChild(_spr);

            _graph = new Sprite();
            _graph.x = cw + 10;
            _graph.y = 250;
            addChild(_graph);

            _print_out = new TextField();
            var fmt:TextFormat = _print_out.defaultTextFormat;
            fmt.font = "_sans";
            _print_out.wordWrap = true;
            _print_out.multiline = true;
            //			_print_out.width = stage.stageWidth - (10 + _graph.x);
            _print_out.x = _graph.x;
            _print_out.y = _graph.y + 10;
            addChild(_print_out);

            //define TextFlow and manager objects
            tf = new TextFlow();
            um = new UndoManager();
            em = new EditManager(um);
            tf.interactionManager = em;

            //compose TextFlow to display
            _cc = new ContainerController(_spr, cw, ch);
            //_cc.verticalAlign = VerticalAlign.BOTTOM;
            //_cc.verticalScrollPolicy = ScrollPolicy.ON;
            tf.flowComposer.addController(_cc);
            tf.flowComposer.updateAllControllers();

            //make a button to add Inline Graphic elements
            _btn = new Sprite();
            _btn.graphics.beginFill(0xFF0000, 1);
            _btn.graphics.drawRect(0, 0, 120, 30);
            addChild(_btn);
            _btn.addEventListener(MouseEvent.CLICK, btnClicked);
            _btn.y = 600;

            addMessage("1");
            addMessage("2");
            addMessage("3", true);

        }

        public function addMessage(msg:String, add_image:Boolean = false):void
        {
            //define elements to contain text
            var d:DivElement = new DivElement();
            var p:ParagraphElement = new ParagraphElement();
            var s:SpanElement = new SpanElement();
            s.text = msg;
            //add these elements to the TextFlow
            p.addChild(s);
            d.addChild(p);
            if (add_image)
            {
                var sp:Sprite = new Sprite();
                sp.graphics.beginFill(0xFFCC00);
                sp.graphics.drawRect(0, 0, 100, 20);
                var i:InlineGraphicElement = new InlineGraphicElement();
                i.source = sp;
                i.width = 100;
                i.height = 20;
                p.addChild(i);
            }
            tf.addChild(d);
            tf.flowComposer.updateAllControllers();
            _cc.verticalScrollPosition = _cc.getContentBounds().height;
            tf.flowComposer.updateAllControllers();
        }

        protected function btnClicked(e:MouseEvent):void
        {
            _playing = !_playing;
            removeEventListener(Event.ENTER_FRAME, onEnterFrame);
            if (_playing)
            {
                addEventListener(Event.ENTER_FRAME, onEnterFrame);
            }
        }

        protected function onEnterFrame(e:Event):void
        {
            _count++;

            if (_count > 100)
            {
                tf.removeChildAt(0);
            }

            addMessage("Message Number: " + _count + " " + randomString());
            printOut()
        }

        protected function printOut():void
        {
            var now:Date = new Date();
            var tm:Number = (now.getTime() - _last_time.getTime());
            _last_five.push(tm);
            if (_last_five.length > 10) _last_five.shift();
            var avg_tm:Number = 0;
            for (var i:int = 0; i < _last_five.length; i++) avg_tm += _last_five[i];
            avg_tm = Math.round(avg_tm / _last_five.length);
            var elapsed_str:String = "message: \t\t\t" + _count
                    + "\ntime: \t\t\t\t" + tm + "ms"
                    + "\navg of last 10:\t\t" + avg_tm + "ms";
            //trace(elapsed_str );
            _print_out.text = elapsed_str;
            _last_time = now;
            drawGraph(tm);
        }

        protected function drawGraph(tm:Number):void
        {
            if (_count % 5 == 0)
            {
                _graph.graphics.beginFill(0x0);
                _graph.graphics.drawRect(_count / 10, -Math.round(tm / 10), 1, 1);
                _graph.graphics.beginFill(0xFF0000);
                _graph.graphics.drawRect(_count / 10, -Math.round(System.totalMemory / 1000000), 1, 1);
            }
        }

        protected function randomString():String
        {
            var chars:String = "abcdefghijklmnopqrstuvwzyz                    ";
            var chars_len:Number = chars.length;
            var random_str:String = "";
            var num_chars:Number = Math.round(Math.random() * 100);
            for (var i:int = 0; i < num_chars; i++)
            {
                random_str = random_str + chars.charAt(Math.round(Math.random() * chars_len));
            }
            return random_str;
        }
    }
}