[Laszlo-dev] [Laszlo-checkins] r12743 - in openlaszlo/trunk: WEB-INF/lps/config WEB-INF/lps/lfc/kernel/dhtml WEB-INF/lps/lfc/kernel/swf WEB-INF/lps/lfc/kernel/swf9 WEB-INF/lps/lfc/views lps/components/base lps/components/debugger lps/components/incubator lps/components/incubator/test

Max Carlson max at openlaszlo.org
Thu Feb 5 05:07:01 PST 2009


Also, did you mean to check in the change to lps.properties?

ptw at openlaszlo.org wrote:
> Author: ptw
> Date: 2009-02-03 20:06:10 -0800 (Tue, 03 Feb 2009)
> New Revision: 12743
> 
> Modified:
>    openlaszlo/trunk/WEB-INF/lps/config/lps.properties
>    openlaszlo/trunk/WEB-INF/lps/lfc/kernel/dhtml/LzInputTextSprite.js
>    openlaszlo/trunk/WEB-INF/lps/lfc/kernel/dhtml/LzSprite.js
>    openlaszlo/trunk/WEB-INF/lps/lfc/kernel/dhtml/LzTextSprite.js
>    openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf/LzSprite.as
>    openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf/LzTextSprite.as
>    openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf9/LzInputTextSprite.as
>    openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf9/LzSprite.as
>    openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf9/LzTextSprite.as
>    openlaszlo/trunk/WEB-INF/lps/lfc/views/LaszloCanvas.lzs
>    openlaszlo/trunk/WEB-INF/lps/lfc/views/LaszloView.lzs
>    openlaszlo/trunk/WEB-INF/lps/lfc/views/LzInputText.lzs
>    openlaszlo/trunk/WEB-INF/lps/lfc/views/LzText.lzs
>    openlaszlo/trunk/lps/components/base/basescrollbar.lzx
>    openlaszlo/trunk/lps/components/debugger/newcontent.lzx
>    openlaszlo/trunk/lps/components/incubator/scrolledittext.lzx
>    openlaszlo/trunk/lps/components/incubator/test/newvscrollbar-test.lzx
>    openlaszlo/trunk/lps/components/incubator/test/scrolledittext-test.lzx
> Log:
> Change 20090130-ptw-t by ptw at dueling-banjos.home on 2009-01-30 18:08:40 EST
>     in /Users/ptw/OpenLaszlo/trunk-4
>     for http://svn.openlaszlo.org/openlaszlo/trunk
> 
> Summary: Implement LFC end of kernel scrolling API
> 
> Bugs Fixed: LPP-6580  scrolledittext doesn't work in 4.1 (partial)
> 
> Technical Reviewer: max (pending)
> QA Reviewer: hminsky (Message-ID: <8c61fad60902031852s6489a342la9d5aa0aab396fd4 at mail.gmail.com>)
> 
> Details:
>     LzSprite.*, LaszloView, LaszloCanvas: Add linescrolling
>     capability, unify capabilities as a sprite instance var.
> 
>     swf/LzTextSprite.as: Turn on warnUndefinedReferences so we can
>     debug this.  Stop making all sorts of undefined references.
>     Actually compute `lineheight`.  Use that to implement the
>     pixel/line kernel API.  Convert __updatefieldsize to use the new
>     scrollevent kernel API.
> 
>     swf9/LzTextSprite: Add primitive version of setX/YScroll
> 
>     LzInputText: Set tsprite in __makeSprite
> 
>     LzText: Implement new kernel scrolling API.  Cache tsprite for
>     efficiency.
> 
>     newcontent, basescrollbar: Silence warnings.
> 
>     scrolledittext: Use new API's
> 
>     test/*: Max's improved tests
> 
> Tests:
>     Compiles in swf9, smokecheck in 3 runtimes, component debugger in
>     swf8/9, component sampler in 3 runtimes.
> 
> 
> 
> Modified: openlaszlo/trunk/WEB-INF/lps/config/lps.properties
> ===================================================================
> --- openlaszlo/trunk/WEB-INF/lps/config/lps.properties	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/WEB-INF/lps/config/lps.properties	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -165,7 +165,7 @@
>  compiler.swf9.warnings=false
>  compiler.swf9.execflex=false
>  # Tell swf9 compiler to catch errors in debug mode
> -#compiler.swf9.catcherrors=true
> +compiler.swf9.catcherrors=true
>  
>  
>  #===============================================================================
> 
> Modified: openlaszlo/trunk/WEB-INF/lps/lfc/kernel/dhtml/LzInputTextSprite.js
> ===================================================================
> --- openlaszlo/trunk/WEB-INF/lps/lfc/kernel/dhtml/LzInputTextSprite.js	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/WEB-INF/lps/lfc/kernel/dhtml/LzInputTextSprite.js	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -899,6 +899,14 @@
>      }    
>  }
>  
> +LzInputTextSprite.prototype.setYScroll = function (n){
> +  this.__LzInputDiv.scrollTop = (- n);
> +}
> +
> +LzInputTextSprite.prototype.setXScroll = function (n){
> +  this.__LzInputDiv.scrollLeft = (- n);
> +}
> +
>  LzInputTextSprite.prototype.setWidth = function (w) {
>      if (w == null || w < 0 || isNaN(w) || this.width == w) return;
>      // call LzSprite.setWidth();
> 
> Modified: openlaszlo/trunk/WEB-INF/lps/lfc/kernel/dhtml/LzSprite.js
> ===================================================================
> --- openlaszlo/trunk/WEB-INF/lps/lfc/kernel/dhtml/LzSprite.js	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/WEB-INF/lps/lfc/kernel/dhtml/LzSprite.js	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -383,6 +383,7 @@
>      ,runtimemenus: false
>      ,setclipboard: false
>      ,proxypolicy: false
> +    ,linescrolling: false
>  }
>  
>  LzSprite.prototype.__updateQuirks = function () {
> 
> Modified: openlaszlo/trunk/WEB-INF/lps/lfc/kernel/dhtml/LzTextSprite.js
> ===================================================================
> --- openlaszlo/trunk/WEB-INF/lps/lfc/kernel/dhtml/LzTextSprite.js	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/WEB-INF/lps/lfc/kernel/dhtml/LzTextSprite.js	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -438,6 +438,14 @@
>      }
>  }
>  
> +LzTextSprite.prototype.setYScroll = function (n){
> +  this.__LZtextdiv.scrollTop = (- n);
> +}
> +
> +LzTextSprite.prototype.setXScroll = function (n){
> +  this.__LZtextdiv.scrollLeft = (- n);
> +}
> +
>  LzTextSprite.prototype.__setWidth = LzSprite.prototype.setWidth;
>  LzTextSprite.prototype.setWidth = function (w, force){
>      if (w == null || w < 0 || isNaN(w) || (this.width == w && !force)) return;
> 
> Modified: openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf/LzSprite.as
> ===================================================================
> --- openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf/LzSprite.as	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf/LzSprite.as	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -70,6 +70,7 @@
>      ,runtimemenus: true
>      ,setclipboard: true
>      ,proxypolicy: true
> +    ,linescrolling: true
>  }
>  
>  /** Turns accessibility on by showing/hiding the global yellow flash focusrect
> 
> Modified: openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf/LzTextSprite.as
> ===================================================================
> --- openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf/LzTextSprite.as	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf/LzTextSprite.as	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -7,7 +7,8 @@
>    * @topic Kernel
>    * @subtopic AS2
>    */
> -
> +{
> +#pragma "warnUndefinedReferences=true"
>  var LzTextSprite = function(newowner, args) {
>      if (newowner == null) return this;
>      this.__LZdepth = newowner.immediateparent.sprite.__LZsvdepth++;
> @@ -17,9 +18,9 @@
>      this._accProps = {};
>  
>      //inherited attributes, documented in view
> -    this.fontname = args.font;
> -    this.fontsize = args.fontsize;
> -    this.fontstyle = args.fontstyle;
> +    if (args['font']) this.fontname = args.font;
> +    if (args['fontsize']) this.fontsize = args.fontsize;
> +    if (args['fontstyle']) this.fontstyle = args.fontstyle;
>      this.sizeToHeight = false;
>  
>      this.yscroll = 0;
> @@ -28,7 +29,7 @@
>      //@field Boolean resize:  text width automatically resizes when text is set.
>      // default: false
>      // 
> -    this.resize = (args.resize == true);
> +    this.resize = (args['resize'] == true);
>  
>      ////////////////////////////////////////////////////////////////
>  
> @@ -56,7 +57,7 @@
>      ///   textclip._highquality = 2;
>  
>      // default to bitmap caching being on 
> -    if (args.cachebitmap == null) args.cachebitmap = true;
> +    if (args['cachebitmap'] == null) args.cachebitmap = true;
>  }
>  
>  LzTextSprite.prototype = new LzSprite(null);
> @@ -69,7 +70,7 @@
>  LzTextSprite.prototype.textcolor = 0x0; // black
>  
>  LzTextSprite.prototype.__initTextProperties = function (args) {
> -    this.password = args.password  ? true : false;
> +    this.password = args['password']  ? true : false;
>      var textclip = this.__LZtextclip;
>      textclip.password = this.password;
>  
> @@ -79,7 +80,7 @@
>      textclip.selectable = args.selectable;
>      textclip.autoSize = false;
>  
> -    this.setMultiline( args.multiline );
> +    this.setMultiline( (!! args['multiline']) );
>  
>      //inherited attributes, documented in view
>      this.fontname = args.font;
> @@ -130,7 +131,7 @@
>      this.scrollheight = this.height;
>  
>      textclip.onScroller = this.__updatefieldsize;
> -
> +    textclip.onScroller();
>  }
>  
>  
> @@ -140,7 +141,7 @@
>    * @access private
>    */
>  LzTextSprite.prototype.getMCRef = function () {
> -    return this.__LZtextclip;
> +    return this['__LZtextclip'];
>  }
>  
>  
> @@ -174,6 +175,10 @@
>    * @access private
>    */
>  LzTextSprite.prototype.maxhscroll = 0;
> +/**
> + * @access private
> + */
> +LzTextSprite.prototype.lineheight = 1;
>  
>  // [todo: 2004-3-29 hqm] lines seem to get the ends clipped off if you use the TextField.textWidth
>  // from Flash, so I am adding a constant. Am I missing something here? 
> @@ -213,7 +218,10 @@
>    * @access private
>    */
>  LzTextSprite.prototype.setWidth = function ( val ){
> -    this.__LZtextclip._width = val;
> +    if (this['__LZtextclip']) {
> +      this.__LZtextclip._width = val;
> +      this.__LZforceScrollAttrs();
> +    }
>      this._viewsetWidth( val );
>      // recalculate height
>      if (this.sizeToHeight) {
> @@ -228,7 +236,10 @@
>    * @access private
>    */
>  LzTextSprite.prototype.setHeight = function ( val ){
> -    this.__LZtextclip._height = val;
> +    if (this['__LZtextclip']) {
> +      this.__LZtextclip._height = val;
> +      this.__LZforceScrollAttrs();
> +    }
>      this._viewsetHeight( val );
>  }
>  LzTextSprite.prototype._viewsetHeight = LzSprite.prototype.setHeight;
> @@ -402,6 +413,14 @@
>      if (this.onxscroll.ready) this.onxscroll.sendEvent(this.__LZtextclip._x);
>  }
>  
> +LzTextSprite.prototype.lineNoToPixel = function (n:Number):Number {
> +  return (n - 1) * this.lineheight;
> +}
> +
> +LzTextSprite.prototype.pixelToLineNo = function (n:Number):Number {
> +  return Math.ceil(n / this.lineheight) + 1;
> +}
> +
>  /**
>    * Set the y scroll position of the textfield.
>    * @param Number n: set the top line of the textfield to offset n pixels
> @@ -433,15 +452,15 @@
>          // and call the Flash line scroll function to scroll the rest of the way.
>          // compute how many lines to scroll the flash text field
>          var lh = this.lineheight;
> -        var dy = (rh - lh) - this.height;
> +        var dy = rh  - this.height;
>          var excess = (- this.yscroll) - dy;
>          var nlines = Math.floor(excess/lh);
>  
>          // pixels remainder of line height
>          var frac = Math.round(excess - (nlines * lh));
>          //Debug.write("fraction="+fraction);
> -        /// +++ CHECK THIS HOW YOU SCROLL TEXT6
> -        this.__LZtextclip.scroll = nlines;
> +        // lines are 1-based
> +        this.__LZtextclip.scroll = nlines + 1;
>          // need to figure out where to put the fraction (add or subtract??)
>          this.__LZtextclip._y = - Math.floor((dy + frac));
>      }
> @@ -554,7 +573,7 @@
>  
>      // If accessibility is enabled, hunt for <img alt="...."> tags and assign and
>      // put the alt tag somewhere a screen reader can find it.
> -    if (canvas.accessible) {
> +    if (canvas['accessible']) {
>          t = this.annotateAAimg(t);
>      }
>  
> @@ -582,9 +601,11 @@
>  
>      // Fix for lpp-5449 (reset the selection if the new text is not
>      // within it)
> -    var l = t.length;
> -    if (this._selectionstart > l || this._selectionend > l) {
> +    if (this['_selectionstart']) {
> +      var l = t.length;
> +      if (this._selectionstart > l || this._selectionend > l) {
>          this.setSelection(l);
> +      }
>      }
>  }
>  
> @@ -668,15 +689,16 @@
>      // We want to adjust the current contents, _and_ any new contents.
>      this.__LZtextclip.setNewTextFormat(tf);
>      this.__LZtextclip.setTextFormat(tf);
> +    var lh = tf.getTextExtent('__ypgSAMPLE__').height;
> +    if (lh !== this.lineheight) {
> +      this.lineheight = lh;
> +      // Tell the owner the linescale has changed
> +      this.owner.scrollevent('lineHeight', lh);
> +    }
>  }
>  
>  LzTextSprite.prototype.setFontInfo = function () {
>      this.font = LzFontManager.getFont( this.fontname , this.fontstyle );
> -
> -    if (this.font != null) {
> -        this.lineheight = this.font.leading + ( this.font.height *
> -                                                this.fontsize/ this.DEFAULT_SIZE );
> -    }
>  }
>  
>  /**
> @@ -851,22 +873,28 @@
>    * __LZtextclip from __LZforceScrollAttrs
>    */
>  LzTextSprite.prototype.__updatefieldsize = function ( ){
> -    if ( this.__lzview.scroll != this.scroll) {
> -        this.__lzview.scroll = this.scroll;
> -        if (this.__lzview.onscroll.ready) this.__lzview.onscroll.sendEvent(this.scroll)
> -    }
> -    if (this.__lzview.maxscroll != this.maxscroll) {
> -        this.__lzview.maxscroll = this.maxscroll;
> -        if (this.__lzview.onmaxscroll.ready) this.__lzview.onmaxscroll.sendEvent(this.maxscroll)
> -    }
> -    if (this.__lzview.hscroll != this.hscroll) {
> -        this.__lzview.hscroll = this.hscroll;
> -        if (this.__lzview.onhscroll.ready) this.__lzview.onhscroll.sendEvent(this.hscroll)
> -    }
> -    if (this.__lzview.maxhscroll != this.maxhscroll) {
> -        this.__lzview.maxhscroll = this.maxhscroll;
> -        if (this.__lzview.onmaxhscroll.ready) this.__lzview.onmaxhscroll.sendEvent(this.maxhscroll)
> -    }
> +  var lzv = this.__lzview;
> +  var tsprite = lzv.tsprite;
> +  var scroll = this.scroll;
> +  if ( tsprite.scroll !== scroll) {
> +    tsprite.scroll = scroll;
> +    lzv.scrollevent('scrollTop', tsprite.lineNoToPixel(scroll));
> +  }
> +  var maxscroll = this.maxscroll;
> +  if (tsprite.maxscroll !== maxscroll) {
> +    tsprite.maxscroll = maxscroll;
> +    lzv.scrollevent('scrollHeight', tsprite.lineNoToPixel(maxscroll) + tsprite.height);
> +  }
> +  var hscroll = this.hscroll;
> +  if (tsprite.hscroll !== hscroll) {
> +    tsprite.hscroll = hscroll;
> +    lzv.scrollevent('scrollLeft', hscroll);
> +  }
> +  var maxhscroll = this.maxhscroll;
> +  if (tsprite.maxhscroll !== maxhscroll) {
> +    tsprite.maxhscroll = maxhscroll;
> +    lzv.scrollevent('scrollWidth', maxhscroll + tsprite.width);
> +  }
>  }
>  
>  /**
> @@ -1021,3 +1049,4 @@
>      this.__setFormat();
>      // note: don't need to recompute dimensions here
>  }
> +}
> 
> Modified: openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf9/LzInputTextSprite.as
> ===================================================================
> --- openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf9/LzInputTextSprite.as	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf9/LzInputTextSprite.as	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -32,7 +32,6 @@
>      var enabled = true;
>      var focusable = true;
>      var hasFocus = false;
> -    var scroll = 0;
>  
>      override public function __initTextProperties (args:Object) {
>          super.__initTextProperties(args);
> 
> Modified: openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf9/LzSprite.as
> ===================================================================
> --- openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf9/LzSprite.as	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf9/LzSprite.as	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -105,7 +105,10 @@
>        // flag to track sprite the mouse went over while down to send mouseup event later -  see LPP-7300 and LPP-7335
>        private var __mouseoverInFront:LzSprite = null;
>  
> -      public static var capabilities:* = {
> +      // NOTE: [2009-02-01 ptw] This may look like it should be a static
> +      // var, but LFC code expects capabilities to be a
> +      // property of the sprite, so we copy it to an instance var
> +      static var capabilities:* = {
>        rotation: true
>        // Avoid scaling canvas to percentage values - SWF already scales the viewport size, so take window size literally to avoid scaling twice
>        ,scalecanvastopercentage: false
> @@ -125,7 +128,9 @@
>        ,runtimemenus: true
>        ,setclipboard: true
>        ,proxypolicy: true
> -      }
> +      ,linescrolling: true
> +      };
> +      var capabilities = LzSprite.capabilities;
>  
>        public function LzSprite (newowner = null, isroot = null) {
>            // owner:*, isroot:Boolean
> 
> Modified: openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf9/LzTextSprite.as
> ===================================================================
> --- openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf9/LzTextSprite.as	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/WEB-INF/lps/lfc/kernel/swf9/LzTextSprite.as	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -30,8 +30,28 @@
>          public static var DEFAULT_SIZE = 11;
>  
>          var font = null;
> -        public var lineheight = 11;
>  
> +        /**
> +        * @access private
> +        */
> +        public var scroll:Number = 0;
> +        /**
> +        * @access private
> +        */
> +        public var maxscroll:Number = 0;
> +        /**
> +        * @access private
> +        */
> +        public var hscroll:Number = 0;
> +        /**
> +        * @access private
> +        */
> +        public var maxhscroll:Number = 0;
> +        /**
> +        * @access private
> +        */
> +        public var lineheight:Number = 1;
> +
>          public var textcolor = 0;
>          public var text:String = "";
>  
> @@ -74,24 +94,28 @@
>              this.textfield.addEventListener(flash.events.Event.SCROLL, __handleScrollEvent);
>          }
>  
> -        function __handleScrollEvent(e:Event) {
> -            if ( this.owner.scroll != textfield.scrollV) {
> -                this.owner.scroll = textfield.scrollV;
> -                if (this.owner.onscroll.ready) this.owner.onscroll.sendEvent(textfield.scrollV);
> -            }
> -            if (this.owner.maxscroll != textfield.maxScrollV) {
> -                this.owner.maxscroll = textfield.maxScrollV;
> -                if (this.owner.onmaxscroll.ready) this.owner.onmaxscroll.sendEvent(textfield.maxScrollV);
> -            }
> -            if (this.owner.hscroll != textfield.scrollH) {
> -                this.owner.hscroll = textfield.scrollH;
> -                if (this.owner.onhscroll.ready) this.owner.onhscroll.sendEvent(textfield.scrollH);
> -            }
> -            if (this.owner.maxhscroll != textfield.maxScrollH) {
> -                this.owner.maxhscroll = textfield.maxScrollH;
> -                if (this.owner.onmaxhscroll.ready) this.owner.onmaxhscroll.sendEvent(textfield.maxScrollH);
> -            }
> -        }
> +    function __handleScrollEvent(e:Event = null) {
> +      if (scroll !== textfield.scrollV) {
> +        scroll = textfield.scrollV;
> +        //Debug.info('__handleScrollEvent', 'scrollTop', lineNoToPixel(textfield.scrollV));
> +        owner.scrollevent('scrollTop', lineNoToPixel(textfield.scrollV));
> +      }
> +      if (maxscroll !== textfield.maxScrollV) {
> +        maxscroll = textfield.maxScrollV;
> +        //Debug.info('__handleScrollEvent', 'scrollHeight', lineNoToPixel(textfield.maxScrollV));
> +        owner.scrollevent('scrollHeight', lineNoToPixel(textfield.maxScrollV) + height);
> +      }
> +      if (hscroll !== textfield.scrollH) {
> +        hscroll = textfield.scrollH;
> +        //Debug.info('__handleScrollEvent', 'scrollLeft', textfield.scrollH);
> +        owner.scrollevent('scrollLeft', textfield.scrollH);
> +      }
> +      if (maxhscroll !== textfield.maxScrollH) {
> +        maxhscroll = textfield.maxScrollH;
> +        //Debug.info('__handleScrollEvent', 'scrollWidth', textfield.maxScrollH);
> +        owner.scrollevent('scrollWidth', textfield.maxScrollH + width);
> +      }
> +    }
>  
>  
>        // turn on/off canceling of mouse event bubbling
> @@ -147,6 +171,7 @@
>              super.setWidth(w);
>              if (w) {
>                  this.textfield.width = w;
> +                this.__handleScrollEvent();
>              }
>          }
>  
> @@ -154,6 +179,7 @@
>              super.setHeight(h);
>              if (h) {
>                  this.textfield.height = h;
> +                this.__handleScrollEvent();
>              }
>          }
>  
> @@ -227,9 +253,7 @@
>              this.setText((args['text'] != null) ? String(args.text) : '');
>              
>              if (this.sizeToHeight) {
> -                //text and format is set, measure it
> -                var lm:TextLineMetrics = textclip.getLineMetrics(0);
> -                var h = lm.ascent + lm.descent + lm.leading;
> +                var h = this.lineheight;
>                  //TODO [anba 20080602] is this ok for multiline? 
>                  if (this.multiline) h *= textclip.numLines;
>                  h += 4;//2*2px gutter, see flash docs for flash.text.TextLineMetrics 
> @@ -237,7 +261,7 @@
>              }
>  
>              addScrollEventListener();
> -
> +            __handleScrollEvent();
>          }
>  
>  
> @@ -283,12 +307,6 @@
>          function setFontInfo () {
>              this.font = LzFontManager.getFont( this.fontname , this.fontstyle );
>              //Debug.write('setFontInfo this.font = ', this.font, 'this.fontname = ', this.fontname, this.fontstyle);
> -
> -            if (this.font != null) {
> -                //Debug.write('font.leading', this.font.leading, 'font.height = ',this.font.height, 'fontsize =',this.fontsize);
> -                this.lineheight = Number(this.font.leading) + ( Number(this.font.height) *
> -                                                        Number(this.fontsize) / DEFAULT_SIZE );
> -            }
>          }
>  
>          /**
> @@ -414,6 +432,14 @@
>              tf.letterSpacing = this.letterspacing;
>  
>              this.textfield.defaultTextFormat = tf;
> +
> +            var lm:TextLineMetrics = this.textfield.getLineMetrics(0);
> +            var lh = lm.ascent + lm.descent + lm.leading;
> +            if (lh !== this.lineheight) {
> +              this.lineheight = lh;
> +              // Tell the owner the linescale has changed
> +              this.owner.scrollevent('lineHeight', lh);
> +            }
>          }
>   
>        
> @@ -535,16 +561,24 @@
>      return this.textfield.bottomScrollV;
>  }
>  
> -function setXScroll ( n ){
> -    Debug.write("LzTextSprite.setXScroll not yet implemented");
> +function lineNoToPixel (n:Number):Number {
> +  return (n - 1) * lineheight;
>  }
>  
> +function pixelToLineNo (n:Number):Number {
> +  return Math.ceil(n / lineheight) + 1;
> +}
> +
>  function setYScroll ( n ){
> -    Debug.write("LzTextSprite.setYScroll not yet implemented");
> +  this.textfield.scrollV = this.pixelToLineNo((- n));
>  }
>  
> +function setXScroll ( n ){
> +  this.textfield.scrollH = (- n);
> +}
> +
>  function setWordWrap ( wrap ){
> -    Debug.write("LzTextSprite.setWordWrap not yet implemented");
> +    Debug.warn("LzTextSprite.setWordWrap not yet implemented");
>  }
>  
>  function getSelectionPosition() {
> 
> Modified: openlaszlo/trunk/WEB-INF/lps/lfc/views/LaszloCanvas.lzs
> ===================================================================
> --- openlaszlo/trunk/WEB-INF/lps/lfc/views/LaszloCanvas.lzs	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/WEB-INF/lps/lfc/views/LaszloCanvas.lzs	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -1,6 +1,6 @@
>  /**
>    *
> -  * @copyright Copyright 2001-2008 Laszlo Systems, Inc.  All Rights Reserved.
> +  * @copyright Copyright 2001-2009 Laszlo Systems, Inc.  All Rights Reserved.
>    *            Use is subject to license terms.
>    *
>    * @affects lzcanvas
> @@ -186,14 +186,8 @@
>        */
>      override function construct (parent , args) {
>          this.__makeSprite(null);
> +        var capabilities = this.sprite.capabilities;
>  
> -        // TODO [hqm 2008-04] how can we make this consistent across runtimes ? 
> -        if ($as3) {
> -            var capabilities = LzSprite.capabilities;
> -        } else {
> -            var capabilities = LzSprite.prototype.capabilities;
> -        }
> -
>          // TODO: [2006-05-19 ptw] The original did not do this, should we?
>          // super(null, args);
>          // No, we can't.  But you have to be aware that if you futz with
> 
> Modified: openlaszlo/trunk/WEB-INF/lps/lfc/views/LaszloView.lzs
> ===================================================================
> --- openlaszlo/trunk/WEB-INF/lps/lfc/views/LaszloView.lzs	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/WEB-INF/lps/lfc/views/LaszloView.lzs	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -397,14 +397,7 @@
>  /** @access private */
>  var DOUBLE_CLICK_TIME = 500;
>  
> -// TODO [hqm 2008-03] Will asking for LzSprite.prototype.xxx  work in SWF9?
> -if ($as3) {
> -    /** @access private */
> -    var capabilities = LzSprite.capabilities;
> -} else {
> -    /** @access private */
> -    var capabilities = LzSprite.prototype.capabilities;
> -}
> +var capabilities;
>  
>  /**
>    * Base level constructor for views. See LzNode.<method
> @@ -429,6 +422,8 @@
>      this.mask = ip.mask;
>  
>      this.__makeSprite(args);
> +    // Cache capabilities
> +    this.capabilities = this.sprite.capabilities;
>  
>      if (args['width'] != null || this.__LZhasConstraint('width')) {
>          this.hassetwidth = true;
> 
> Modified: openlaszlo/trunk/WEB-INF/lps/lfc/views/LzInputText.lzs
> ===================================================================
> --- openlaszlo/trunk/WEB-INF/lps/lfc/views/LzInputText.lzs	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/WEB-INF/lps/lfc/views/LzInputText.lzs	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -136,13 +136,15 @@
>      super.destroy();
>  }
>  
> +/** @access private */
> +var isprite:LzInputTextSprite;
>  /**
>    * Called to create the sprite object.  May be overridden to use a specific 
>    * version, e.g. LzTextSprite();
>    * @access private
>    */
>  override function __makeSprite(args) {
> -    this.sprite = new LzInputTextSprite(this, args);
> +    this.sprite = this.tsprite = this.isprite = new LzInputTextSprite(this, args);
>  }
>  
>  /** @access private */
> 
> Modified: openlaszlo/trunk/WEB-INF/lps/lfc/views/LzText.lzs
> ===================================================================
> --- openlaszlo/trunk/WEB-INF/lps/lfc/views/LzText.lzs	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/WEB-INF/lps/lfc/views/LzText.lzs	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -142,8 +142,7 @@
>    /** @access private */
>    function $lzc$set_selectable(isSel) {
>      this.selectable = isSel;
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setSelectable(isSel);
> +    this.tsprite.setSelectable(isSel);
>    }
>  
>    /*
> @@ -161,8 +160,7 @@
>      if (this.capabilities.advancedfonts) {
>        if ((aliasType == "normal") || (aliasType == "advanced")) {
>          this.antiAliasType = aliasType;
> -        var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -        tsprite.setAntiAliasType(aliasType);
> +        this.tsprite.setAntiAliasType(aliasType);
>        } else if ($debug) {
>          Debug.warn("antiAliasType invalid, must be 'normal' or 'advanced', but you said '" + aliasType + "'");
>        }
> @@ -182,8 +180,7 @@
>      if (this.capabilities.advancedfonts) {
>        if ((gridFit == "none") || (gridFit == "pixel") || (gridFit == "subpixel")) {
>          this.gridFit = gridFit;
> -        var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -        tsprite.setGridFit(gridFit);
> +        this.tsprite.setGridFit(gridFit);
>        } else if ($debug) {
>          Debug.warn("gridFit invalid, must be 'none', 'pixel', or 'subpixel' but you said '" + gridFit + "'");
>        }
> @@ -203,8 +200,7 @@
>      if (this.capabilities.advancedfonts) {
>        if  ((sharpness >= -400) && (sharpness <= 400)) {
>          this.sharpness = sharpness;
> -        var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -        tsprite.setSharpness(sharpness);
> +        this.tsprite.setSharpness(sharpness);
>        } else if ($debug) {
>          Debug.warn("sharpness out of range, must be -400 to 400");
>        }
> @@ -224,8 +220,7 @@
>      if (this.capabilities.advancedfonts) {
>        if  ((thickness >= -200) && (thickness <= 200)) {
>          this.thickness = thickness;
> -        var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -        tsprite.setThickness(thickness);
> +        this.tsprite.setThickness(thickness);
>        } else if ($debug) {
>          Debug.warn("thickness out of range, must be -200 to 200");
>        }
> @@ -244,14 +239,16 @@
>  
>    /** @access private */
>    override function $lzc$set_width(val) {
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> +    var tsprite = this.tsprite;
>      tsprite.setWidth(val);
> -    super.$lzc$set_width.apply(this, arguments);
> +    super.$lzc$set_width(val);
> +    // maxhscroll depends on width
> +    this.updateAttribute('maxhscroll', this.scrollwidth - this.width);
>      // recalculate height
>      if (this.sizeToHeight) {
>        var h = tsprite.getTextfieldHeight();
>        if (h > 0) {
> -        this.$lzc$set_height (h);
> +        this.$lzc$set_height(h);
>        }
>      }
>    }
> @@ -270,61 +267,291 @@
>     */
>  
>    /**
> -   * The y scroll position of the textfield in pixels.  Default 0.
> +   * Helper for updating an attribute from a sprite callback
> +   *
> +   * @access private
> +   *
> +   * @devnote NOTE: [2009-01-31 ptw] this probably could be merged
> +   * with resourceevent, but `resourceevent` is not the right name, it
> +   * needs to be generalized.  Also, I thought we decided the policy
> +   * was that events are always sent, whether the value changes or
> +   * not.
> +   */
> +  function updateAttribute(name:String, value):void {
> +    this[name] = value;
> +    var event:LzDeclaredEventClass = this['on' + name];
> +    if (event.ready) { event.sendEvent(value); }
> +  }
> +
> +  /*
> +   * Support for backward-compatible line-based interfaces.  This is
> +   * the same as updateAttribute but incorporates the vertical scale
> +   * conversion (if any).
> +   *
> +   * @devnote NOTW: [2009-01-31 ptw] Some sprites support accurate
> +   * conversion of pixel values to line numbers, considering interior
> +   * styling of the content.  If this is not supported, default to
> +   * converting assuming a uniform line height.
> +   *
> +   * @access private
> +   */
> +  function updateLineAttribute(name:String, value):void {
> +    var tsprite:LzTextSprite = this.tsprite;
> +    var lineNo:Number;
> +    if (this.capabilities.linescrolling) {
> +      lineNo = tsprite.pixelToLineNo(value);
> +    } else {
> +      lineNo = Math.floor(value / this.lineheight) + 1;
> +    }
> +    this.updateAttribute(name, lineNo);
> +  }
> +
> +  /**
> +   * The height of a line of text in the current style
> +   *
>     * @lzxtype Number
>     * @type Number
> +   * @keywords read-only
>     */
> -  var yscroll = 0;
> +  var lineheight:Number;
>    /** @access private */
> -  function $lzc$set_yscroll(n) {
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setYScroll(n);
> -    this.yscroll = n;
> -    this.onyscroll.sendEvent(n);
> +  function $lzc$set_lineheight(x:Number):void {
> +    if ($debug) { Debug.error("lineheight is read-only"); }
>    }
>    /** @lzxtype event */
> -  var onyscroll = LzDeclaredEvent;
> +  var onlineheight:LzDeclaredEventClass = LzDeclaredEvent;
>  
>    /**
> -   * The x scroll position of the textfield in pixels. Default 0.
> +   * The y scroll offset of the content in pixels (a negative number
> +   * specifying how many pixels the content should be scrolled
> +   * vertically).  Default 0.
> +   *
>     * @lzxtype Number
>     * @type Number
> +   *
> +   * @devnote NOTE [2009-01-31 ptw] For hysterical reasons this is
> +   * equivalent to DHTML scrolltop, but negated!
>     */
> -  var xscroll = 0;
> +  var yscroll:Number = 0;
>    /** @access private */
> -  function $lzc$set_xscroll(n) {
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setXScroll(n);
> -    this.xscroll = n;
> -    this.onxscroll.sendEvent(n);
> +  function $lzc$set_yscroll(n:Number):void {
> +    this.tsprite.setYScroll(n);
> +    this.updateAttribute('yscroll', n);
> +    this.updateLineAttribute('scroll', (- n));
>    }
>    /** @lzxtype event */
> -  var onxscroll = LzDeclaredEvent;
> +  var onyscroll:LzDeclaredEventClass = LzDeclaredEvent;
>  
> +  /**
> +   * The total height of the content in pixels.
> +   *
> +   * <code>this.setAttribute('height', this.scrollheight)</code> is
> +   * equivalent to <code>this.setAttribute('height', null)</code> (for
> +   * the current content: the former will not follow content changes
> +   * as the latter does). If <code>this.scrollheight &gt;
> +   * this.height</code>, <code>this.setAttribute('yscroll',
> +   * this.height - this.scrollheight)</code> will scroll the content
> +   * so that the bottom of the content appears in the bottom of the
> +   * view.
> +   *
> +   * @lzxtype Number
> +   * @type number
> +   * @keywords read-only
> +   */
> +  var scrollheight:Number;
>    /** @access private */
> -  var scroll = 0;
> +  function $lzc$set_scrollheight(x:Number):void {
> +    if ($debug) { Debug.error("scrollheight is read-only"); }
> +  }
>    /** @lzxtype event */
> -  var onscroll = LzDeclaredEvent;
> +  var onscrollheight:LzDeclaredEventClass = LzDeclaredEvent;
>  
> +  /**
> +   * The x scroll offset of the content in pixels (a negative number
> +   * specifying how many pixels the content should be scrolled
> +   * horizontally). Default 0.
> +   *
> +   * @lzxtype Number
> +   * @type Number
> +   *
> +   * @devnote NOTE [2009-01-31 ptw] For hysterical reasons this is
> +   * equivalent to DHTML scrollleft, but negated!
> +   */
> +  var xscroll:Number = 0;
>    /** @access private */
> -  var scrollheight;
> +  function $lzc$set_xscroll(n:Number):void {
> +    this.tsprite.setXScroll(n);
> +    this.updateAttribute('xscroll', n);
> +    this.updateAttribute('hscroll', (- n));
> +  }
> +  /** @lzxtype event */
> +  var onxscroll:LzDeclaredEventClass = LzDeclaredEvent;
>  
> +  /**
> +   * The total width of the content in pixels.
> +   *
> +   * <code>this.setAttribute('width', this.scrollwidth)</code> is
> +   * equivalent to <code>this.setAttribute('width', null)</code> (for
> +   * the current content: the former will not follow content changes
> +   * as the latter does). If <code>this.scrollwidth &gt;
> +   * this.width</code>, <code>this.setAttribute('yscroll', this.width
> +   * - this.scrollwidth)</code> will cause the end of content to be
> +   * visible at the edge of the view.  (The rightmost content will
> +   * appear at the right edge of the view for left-to-right scripts.)
> +   *
> +   * @lzxtype Number
> +   * @type number
> +   * @keywords read-only
> +   */
> +  var scrollwidth:Number;
>    /** @access private */
> -  var maxscroll = 0;
> +  function $lzc$set_scrollwidth(x:Number):void {
> +    if ($debug) { Debug.error("scrollwidth is read-only"); }
> +  }
>    /** @lzxtype event */
> -  var onmaxscroll = LzDeclaredEvent;
> +  var onscrollwidth:LzDeclaredEventClass = LzDeclaredEvent;
>  
> +  /*
> +   * Backward-compatible line/character-based interfaces
> +   */
> +
> +  /**
> +   * The vertical scroll position (in lines, 1-based). Default 1.
> +   * @lzxtype Number
> +   * @type Number
> +   *
> +   * @devnote NOTE: [2009-01-31 ptw] Some sprites support accurate
> +   * conversion of pixel values to line numbers, considering interior
> +   * styling of the content.  If this is not supported, default to
> +   * converting assuming a uniform line height.
> +   */
> +  var scroll:Number = 1;
>    /** @access private */
> -  var hscroll = 0;
> +  function $lzc$set_scroll(n:Number):void {
> +    var tsprite = this.tsprite;
> +    var pixel:Number;
> +    if (this.capabilities.linescrolling) {
> +      pixel = tsprite.lineNoToPixel(n);
> +    } else {
> +      pixel = (n - 1) * this.lineheight;
> +    }
> +    // Call the pixel interface which will update the attribute and
> +    // send the event
> +    this.$lzc$set_yscroll((- pixel));
> +  }
>    /** @lzxtype event */
> -  var onhscroll = LzDeclaredEvent;
> +  var onscroll:LzDeclaredEventClass = LzDeclaredEvent;
>  
> +  /**
> +   * The maximum vertical scroll position (in lines, 1-based).
> +   * <code>this.setAttribute('scroll', this.maxscroll)</code> will
> +   * cause the last line of the content to be visible at the bottom of
> +   * the view (hence this is the line number of the line that will
> +   * appear at the top of the view when scrolled all the way to the
> +   * bottom).
> +   *
> +   * @lzxtype Number
> +   * @type Number
> +   * @keywords read-only
> +   */
> +  var maxscroll:Number = 1;
>    /** @access private */
> -  var maxhscroll = 0;
> +  function $lzc$set_maxscroll(x:Number):void {
> +    if ($debug) { Debug.error("maxscroll is read-only"); }
> +  }
>    /** @lzxtype event */
> -  var onmaxhscroll = LzDeclaredEvent;
> +  var onmaxscroll:LzDeclaredEventClass = LzDeclaredEvent;
> +  /**
> +   * maxscroll depends on height
> +   * @access private
> +   */
> +  override function $lzc$set_height(v) {
> +    super.$lzc$set_height(v);
> +    this.updateLineAttribute('maxscroll', this.scrollheight - this.height);
> +  }
>  
> +  /**
> +   * The horizontal scroll position in pixels.  Default 0.
> +   * @lzxtype Number
> +   * @type Number
> +   */
> +  var hscroll:Number = 0;
> +  /** @access private */
> +  function $lzc$set_hscroll(n:Number):void {
> +    // Call the pixel interface which will update the attribute and
> +    // send the event
> +    this.$lzc$set_xscroll((- n));
> +  }
> +  /** @lzxtype event */
> +  var onhscroll:LzDeclaredEventClass = LzDeclaredEvent;
>  
> +  /**
> +   * The maximum horizontal scroll position in pixels.
> +   * <code>this.setAttribute('hscroll', this.maxhscroll)</code> will
> +   * cause the end of content to be visible at the edge of
> +   * the view.  (The rightmost content will appear at the right edge
> +   * of the view for left-to-right scripts, hence this is the pixel
> +   * position of the leftmost pixel that will appear in the view when
> +   * scrolled all the way to the right.)
> +   *
> +   * @lzxtype Number
> +   * @type Number
> +   * @keywords read-only
> +   */
> +  var maxhscroll:Number = 0;
> +  /** @access private */
> +  function $lzc$set_maxhscroll(x:Number):void {
> +    if ($debug) { Debug.error("maxhscroll is read-only"); }
> +  }
> +  /** @lzxtype event */
> +  var onmaxhscroll:LzDeclaredEventClass = LzDeclaredEvent;
> +  /**
> +   * maxhscroll depends on width
> +   * @devnote see $lzc$set_width
> +   */
> +
> +  /**
> +   * Kernel callback for scroll events.  This does not call the
> +   * setters (which would loop back to the kernel!).  It keeps the
> +   * pixel and line values 'in line' [:P]
> +   *
> +   * @access private
> +   */
> +  function scrollevent(name:String, value):void {
> +    switch (name) {
> +      case 'scrollTop':
> +        this.updateAttribute('yscroll', value);
> +        this.updateLineAttribute('scroll', value);
> +        break;
> +      case 'scrollLeft':
> +        this.updateAttribute('xscroll', value);
> +        this.updateAttribute('hscroll', value);
> +        break;
> +      case 'scrollHeight':
> +        this.updateAttribute('scrollheight', value);
> +        // This can't be negative
> +        this.updateLineAttribute('maxscroll', Math.max(0, value - this.height));
> +        break;
> +      case 'scrollWidth':
> +        this.updateAttribute('scrollwidth', value);
> +        // This can't be negative
> +        this.updateAttribute('maxhscroll', Math.max(0, value - this.width));
> +        break;
> +      case 'lineHeight':
> +        this.updateAttribute('lineheight', value);
> +        // Update all the line-based values...
> +        this.updateLineAttribute('scroll', this.yscroll);
> +        // This can't be negative
> +        this.updateLineAttribute('maxscroll', Math.max(0, this.scrollheight - this.height));
> +        break;
> +      default:
> +        if ($debug) {
> +          Debug.error("%w: Uknown scrollevent %s (%w)", arguments.callee, name, value);
> +        }
> +    }
> +  }
> +
> +
>    /*
>     * Resizing interface
>     */
> @@ -356,9 +583,8 @@
>    var multiline;
>    /** @access private */
>    function $lzc$set_multiline(ml) :void {
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setMultiline(ml);
> -    this.multiline = (ml == true);
> +    this.multiline = (ml = (!! ml));
> +    this.tsprite.setMultiline(ml);
>    }
>  
>    /**
> @@ -372,9 +598,8 @@
>    var resize = true;
>    /** @access private */
>    function $lzc$set_resize(val) {
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setResize(val);
>      this.resize = val;
> +    this.tsprite.setResize(val);
>    }
>  
>  
> @@ -400,7 +625,7 @@
>        if (this.ontext.ready) this.ontext.sendEvent(t);
>        return;
>      }
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> +    var tsprite = this.tsprite;
>      if (this.visible) tsprite.setVisible(this.visible);
>      if (this.maxlength != null && t.length > this.maxlength){
>        t = t.substring(0, this.maxlength);
> @@ -428,13 +653,13 @@
>      this._textrecompute = false;
>    }
>    /** * @lzxtype event */
> -  var ontext = LzDeclaredEvent;
> +  var ontext:LzDeclaredEventClass = LzDeclaredEvent;
>  
>    /** Sent when a clickable HTML link in the text field is clicked.
>     *  Event data is a string with the link value.
>     * @lzxtype event
>     */
> -  var ontextlink = LzDeclaredEvent;
> +  var ontextlink:LzDeclaredEventClass = LzDeclaredEvent;
>  
>    /** true forces $lzc$set_text to do a full update
>        @access private */
> @@ -449,9 +674,8 @@
>    /** @access private */
>    function $lzc$set_maxlength(val) {
>      if (val == null || val == '') return;
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setMaxLength(val);
>      this.maxlength = val;
> +    this.tsprite.setMaxLength(val);
>      if (this.onmaxlength.ready) this.onmaxlength.sendEvent(val);
>  
>      var t = this.getText();
> @@ -461,7 +685,7 @@
>      }
>    }
>    /** @lzxtype event */
> -  var onmaxlength = LzDeclaredEvent;
> +  var onmaxlength:LzDeclaredEventClass = LzDeclaredEvent;
>  
>    /**
>     * regexp describing set of characters allowed in this field Restrict the characters that can be entered to a pattern specified by a regular expression.
> @@ -473,26 +697,23 @@
>    /** @access private */
>    function $lzc$set_pattern(val) {
>      if (val == null || val == '') return;
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setPattern(val);
>      this.pattern = val;
> +    this.tsprite.setPattern(val);
>      if (this.onpattern.ready) this.onpattern.sendEvent(val);
>    }
>    /** @lzxtype event */
> -  var onpattern = LzDeclaredEvent;
> +  var onpattern:LzDeclaredEventClass = LzDeclaredEvent;
>  
>    /** @access private */
>    function $lzc$set_fontstyle(fstyle) {
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setFontStyle(fstyle);
>      this.fontstyle = fstyle;
> +    this.tsprite.setFontStyle(fstyle);
>    }
>  
>    /** @access private */
>    override function $lzc$set_font(fname) {
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setFontName(fname);
>      this.fontname = fname;
> +    this.tsprite.setFontName(fname);
>      // force recompute of height if needed
>      this._textrecompute = true;
>      this.$lzc$set_text(this.getText());
> @@ -500,9 +721,8 @@
>  
>    /** @access private */
>    function $lzc$set_fontsize(fsize) {
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setFontSize(fsize);
>      this.fontsize = fsize;
> +    this.tsprite.setFontSize(fsize);
>      // force recompute of height if needed
>      this._textrecompute = true;
>      this.$lzc$set_text(this.getText());
> @@ -524,7 +744,7 @@
>        align = "left";
>      }
>      this.textalign = align;
> -    (this.sprite cast LzTextSprite).setTextAlign(align);
> +    this.tsprite.setTextAlign(align);
>      // force recompute of height if needed
>      this._textrecompute = true;
>      this.$lzc$set_text(this.getText());
> @@ -538,7 +758,7 @@
>    /** @access private */
>    function $lzc$set_textindent (indent:Number) :void {
>      this.textindent = indent;
> -    (this.sprite cast LzTextSprite).setTextIndent(indent);
> +    this.tsprite.setTextIndent(indent);
>      // force recompute of height if needed
>      this._textrecompute = true;
>      this.$lzc$set_text(this.getText());
> @@ -552,7 +772,7 @@
>    /** @access private */
>    function $lzc$set_letterspacing (spacing:Number) :void {
>      this.letterspacing = spacing;
> -    (this.sprite cast LzTextSprite).setLetterSpacing(spacing);
> +    this.tsprite.setLetterSpacing(spacing);
>      // force recompute of height if needed
>      this._textrecompute = true;
>      this.$lzc$set_text(this.getText());
> @@ -575,7 +795,7 @@
>        decoration = "none";
>      }
>      this.textdecoration = decoration;
> -    (this.sprite cast LzTextSprite).setTextDecoration(decoration);
> +    this.tsprite.setTextDecoration(decoration);
>    }
>  
>  
> @@ -607,7 +827,7 @@
>        this[attr] = args[arg];
>      }
>  
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> +    var tsprite = this.tsprite;
>      // FIXME [2008-11-24 ptw] (LPP-7391) We should not be passing node
>      // init args across the kernel API, there should be a more
>      // explicit API that isolates the kernel from the node
> @@ -673,8 +893,6 @@
>      } else if (args['height'] != null) {
>        this.$lzc$set_height(args.height);
>      }
> -    // Default the scrollheight to the visible height.
> -    this.scrollheight = this.height;
>  
>      if (args['pattern'] != null) {
>        this.$lzc$set_pattern(args.pattern);
> @@ -703,8 +921,7 @@
>      // [max] had to do this because text fields don't have a height until they're attached into the DOM.
>      // multiline resizable fields adjust their height
>      if (this.sizeToHeight) {
> -      var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -      var h = tsprite.getTextfieldHeight();
> +      var h = this.tsprite.getTextfieldHeight();
>        if (h > 0) {
>          this.$lzc$set_height(h);
>        }
> @@ -716,6 +933,8 @@
>     *
>     */
>  
> +  /** @access private */
> +  var tsprite:LzTextSprite;
>    /**
>     * Called to create the sprite object.  May be overridden to use a specific
>     * version, e.g. LzTextSprite();
> @@ -723,7 +942,7 @@
>     */
>    override function __makeSprite(args) {
>      //Debug.write('__makeSprite', args);
> -    this.sprite = new LzTextSprite(this, args);
> +    this.sprite = this.tsprite = new LzTextSprite(this, args);
>    }
>  
>  
> @@ -732,8 +951,7 @@
>     * @access private
>     */
>    override function getMCRef () {
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    return tsprite.getMCRef();
> +    return this.tsprite.getMCRef();
>    }
>  
>  
> @@ -800,8 +1018,7 @@
>     * Calculates the current width of the text held by the text field.
>     */
>    function getTextWidth ( ){
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    return tsprite.getTextWidth();
> +    return this.tsprite.getTextWidth();
>    }
>    /** @access private */
>    function $lzc$getTextWidth_dependencies ( who , self){
> @@ -812,8 +1029,7 @@
>     * Calculates the current height of the text held by the text field.
>     */
>    function getTextHeight ( ){
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    return tsprite.getTextHeight();
> +    return this.tsprite.getTextHeight();
>      //return this.__LZtextclip.textHeight;
>    }
>    /** @access private */
> @@ -830,36 +1046,32 @@
>      }
>    }
>  
> -  /** Sets the vertical scroll position
> +  /** Sets the vertical scroll position in lines
>     * @param Number h: scroll position
> +   * @deprecated use `setAttribute('scroll', ...)` instead
>     */
>    function setScroll ( h ){
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setScroll(h);
> +    if ($debug) Debug.deprecated(this, arguments.callee, this.setAttribute);
> +    this.$lzc$set_scroll(h);
>    }
>  
>    /** @access private */
>    function getScroll ( ){
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    return tsprite.getScroll();
> +    return this.tsprite.getScroll();
>    }
>  
> -
>    /** @access private */
>    function getMaxScroll ( ){
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    return tsprite.getMaxScroll();
> +    return this.tsprite.getMaxScroll();
>    }
>    /** @access private */
>    function $lzc$getMaxScroll_dependencies ( who , self){
>      return [ self , "maxscroll" ];
>    }
>  
> -
>    /** @access private */
>    function getBottomScroll ( ){
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    return tsprite.getBottomScroll();
> +    return this.tsprite.getBottomScroll();
>    }
>  
>    /**
> @@ -874,7 +1086,6 @@
>      this.$lzc$set_xscroll(n);
>    }
>  
> -
>    /**
>     * Set the y scroll position of the textfield.
>     * @param Number n: set the top line of the textfield to offset n pixels
> @@ -886,7 +1097,16 @@
>      this.$lzc$set_yscroll(n);
>    }
>  
> +  /** Sets the horizontal scroll position
> +   * @param Number s: horizontal scroll position
> +   * @deprecated Use setAttribute('hscroll', ...) instead.
> +   */
> +  function setHScroll (s){
> +    if ($debug) Debug.deprecated(this, arguments.callee, this.setAttribute);
> +    this.$lzc$set_hscroll(s);
> +  }
>  
> +
>    /** @access private */
>    function annotateAAimg (txt) {
>      if (typeof(txt) == "undefined") { return; }
> @@ -1110,8 +1330,7 @@
>  
>    /** @access private */
>    function setBorder ( onroff ){
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setBorder(onroff);
> +    this.tsprite.setBorder(onroff);
>    }
>  
>    /**
> @@ -1119,15 +1338,13 @@
>     * @todo should wrapping be made orthogonal to the multiline flag?
>     */
>    function setWordWrap ( wrap ){
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setWordWrap(wrap);
> +    this.tsprite.setWordWrap(wrap);
>    }
>  
>  
>    /** @access private */
>    function setEmbedFonts ( onroff ){
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setEmbedFonts(onroff);
> +    this.tsprite.setEmbedFonts(onroff);
>    }
>  
>  
> @@ -1225,14 +1442,6 @@
>      }
>    }
>  
> -  /** Sets the horizontal scroll position
> -   * @param Number s: horizontal scroll position
> -   */
> -  function setHScroll (s){
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setHScroll(s);
> -  }
> -
>    /**
>     * Positions the text selection within the text field. If this object does
>     * not already have the focus, this has the ancillary effect of giving it the
> @@ -1245,8 +1454,7 @@
>     */
>    function setSelection ( start , end=null ){
>      if (end == null) { end = start; }
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    tsprite.setSelection(start, end);
> +    this.tsprite.setSelection(start, end);
>    }
>  
>    /**
> @@ -1256,8 +1464,7 @@
>     * based. If the text cursor is not in the textfield, this method returns -1.
>     */
>    function getSelectionPosition ( ){
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    return  tsprite.getSelectionPosition();
> +    return  this.tsprite.getSelectionPosition();
>    }
>  
>    /**
> @@ -1267,8 +1474,7 @@
>     * If the text cursor is not in the textfield, this method returns -1.
>     */
>    function getSelectionSize ( ){
> -    var tsprite:LzTextSprite = (this.sprite cast LzTextSprite);
> -    return tsprite.getSelectionSize();
> +    return this.tsprite.getSelectionSize();
>    }
>  
>    /**
> @@ -1282,7 +1488,7 @@
>     send an ontextlink event to the text view, with a value of VALUE.
>    */
>    public function makeTextLink(str, value) {
> -    return (this.sprite cast LzTextSprite).makeTextLink(str,value);
> +    return this.tsprite.makeTextLink(str,value);
>    }
>  
>  
> 
> Modified: openlaszlo/trunk/lps/components/base/basescrollbar.lzx
> ===================================================================
> --- openlaszlo/trunk/lps/components/base/basescrollbar.lzx	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/lps/components/base/basescrollbar.lzx	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -608,7 +608,9 @@
>              }
>  
>              var pos = Math.round(-thumbpos / this.trackscroll * this.targetscroll);
> -            this.target.setAttribute(this.classroot.scrollattr, pos);
> +            if (pos != this.target[this.classroot.scrollattr]) {
> +                this.target.setAttribute(this.classroot.scrollattr, pos);
> +            }
>  
>              return thumbpos;
>          ]]></method>
> @@ -678,7 +680,7 @@
>  
>  </library>
>  <!-- * X_LZ_COPYRIGHT_BEGIN ***************************************************
> -* Copyright 2001-2008 Laszlo Systems, Inc.  All Rights Reserved.              *
> +* Copyright 2001-2009 Laszlo Systems, Inc.  All Rights Reserved.              *
>  * Use is subject to license terms.                                            *
>  * X_LZ_COPYRIGHT_END ****************************************************** -->
>  <!-- @LZX_VERSION@                                                         -->
> 
> Modified: openlaszlo/trunk/lps/components/debugger/newcontent.lzx
> ===================================================================
> --- openlaszlo/trunk/lps/components/debugger/newcontent.lzx	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/lps/components/debugger/newcontent.lzx	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -3,7 +3,7 @@
>  
>   **************************************************************************-->
>  <!-- * X_LZ_COPYRIGHT_BEGIN ***************************************************
> -* Copyright 2001-2004, 2007, 2008 Laszlo Systems, Inc.  All Rights Reserved.              *
> +* Copyright 2001-2004, 2007, 2008, 2009 Laszlo Systems, Inc.  All Rights Reserved.              *
>  * Use is subject to license terms.                                            *
>  * X_LZ_COPYRIGHT_END ****************************************************** -->
>  
> @@ -325,11 +325,11 @@
>  
>  
>  <method name="setLine" args="n">
> -       this.textpane.setScroll(n);
> +       this.textpane.setAttribute('scroll', n);
>       </method>
>  
>  <method name="setLineNoScroll" args="n">
> -       this.textpane.setScroll(n);
> +       this.textpane.setAttribute('scroll', n);
>       </method>
>  
>  <method name="computeVisibleRegion" >
> @@ -352,17 +352,17 @@
>  
>  <method name="pageUp" args="n=null">
>           var tpane = this.textpane;
> -         tpane.setScroll(tpane.getScroll() - (tpane.getBottomScroll()  - tpane.getScroll()));
> +         tpane.setAttribute('scroll', tpane.getScroll() - (tpane.getBottomScroll()  - tpane.getScroll()));
>           this.updateDisplay();
>       </method>
>  <method name="pageDown" args="n=null">
>           var tpane = this.textpane;
> -         tpane.setScroll(tpane.getScroll() + (tpane.getBottomScroll()  - tpane.getScroll()));
> +         tpane.setAttribute('scroll', tpane.getScroll() + (tpane.getBottomScroll()  - tpane.getScroll()));
>           this.updateDisplay();
>       </method>
>  
>  <method name="incScroll" args="n">
> -       this.textpane.setScroll(this.textpane.getScroll() + n);
> +       this.textpane.setAttribute('scroll', this.textpane.getScroll() + n);
>         this.updateDisplay();
>       </method>
>  
> 
> Modified: openlaszlo/trunk/lps/components/incubator/scrolledittext.lzx
> ===================================================================
> --- openlaszlo/trunk/lps/components/incubator/scrolledittext.lzx	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/lps/components/incubator/scrolledittext.lzx	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -16,22 +16,19 @@
>  
>          <_newinternalinputtext name="inp" x="${parent.border}" 
>              y="${parent.border}">
> -            <attribute name="lineheight"
> -                       value="${this.getTextHeight()/this.getMaxScroll()}"/>
> -            <attribute name="maxtextheight"
> -                       value="${this.getTextHeight() - (this.getTextHeight()/this.getMaxScroll())}"/>
> -            <attribute name="maxheight" 
> -                       value="${this.height + this.maxtextheight}"/>
> -            <event name="onpos" />
> -            <attribute name="pos" value="0" setter="this.setPos(pos)"/>
> +            <attribute name="pos" value="0" type="number"/>
>              
> -            <method name="setPos" args="p">
> -                if (this.isinited) {
> -                    this.setScroll(Math.ceil(1 - (p / this.lineheight)));
> +            <setter name="pos" args="p">
> +                if (this.inited) {
> +                    var scroll = Math.ceil(1 - (p / this.lineheight));
> +                    if (scroll !== this.scroll) {
> +                        this.setAttribute('scroll', scroll);
> +                        //Debug.info('pos', p, this.scroll)
> +                    }
>                      this.pos = p;
>                      if (this.onpos) this.onpos.sendEvent(p);
>                  }
> -            </method>
> +            </setter>
>              
>              <method name="_constainWidth" args="IGNORE_THIS_ARG">
>                  this.setAttribute("width", parent.width - parent.vscrollwidth - parent.border*2 );
> @@ -47,7 +44,7 @@
>              </handler>
>              
>              <handler name="onscroll" args="IGNORE_THIS_ARG">
> -                this.setPos(-this.lineheight * (this.scroll - 1));
> +                this.setAttribute('pos', -this.lineheight * (this.scroll - 1));
>              </handler>
>          </_newinternalinputtext>
>  
> @@ -64,13 +61,13 @@
>              scrolltarget="parent.inp"
>              x="${parent.width - this.width - parent.border + 1}" 
>              stepsize="${parent.inp.lineheight}" 
> -            scrollmax="${parent.inp.maxheight}">
> +            scrollmax="${parent.inp.scrollheight}">
>          </vscrollbar>
>  -->
>  
>          <!--- Name of class to instantiate for vertical scroll bar.
>                @keywords public -->
> -        <attribute name="vscrollbarclassname" type="string" value="lz.vscrollbar"/>
> +        <attribute name="vscrollbarclassname" type="string" value="vscrollbar"/>
>          
>          <!--- Our vertical scrollbar
>                @keywords private -->
> @@ -85,13 +82,14 @@
>                  }
>                  if ($debug) {
>                      if (typeof(lz[classname]) == "undefined") {
> -                        Debug.write("scrollbarclassname undefined", this);
> +                        Debug.warn("scrollbarclassname undefined", this);
>                      }
>                  }
>                  if(typeof(lz[classname]) != "undefined"){
>                      this._vs = new lz[classname](this, 
>                                                   { axis: "y",
>                                                     scrollattr: "pos",
> +                                                   scrollmax: "0",
>                                                     scrolltarget: this.inp});
>                                                     
>                      var xDel = new lz.Delegate(this, 'updateX');
> @@ -99,28 +97,31 @@
>                      xDel.register(this, 'onwidth');
>                      xDel.register(this, 'onborder');
>                      
> -                    new lz.Delegate(this, 'updateScrollMax', this.inp, 'onmaxheight');
> +                    new lz.Delegate(this, 'updateScrollMax', this.inp, 'onscrollheight');
>                      new lz.Delegate(this, 'updateStepSize', this.inp, 'onlineheight');
> +                    // call once manually
> +                    this.updateX();
> +                    this.updateStepSize();
>                  }
>  
>              }
>          </method>
>          
> -        <method name="updateX" args="IGNORE_THIS_ARG">
> +        <method name="updateX" args="IGNORE_THIS_ARG = null">
>              if(this['_vs']){
>                  this._vs.setAttribute("x", this.width - this._vs.width );
>              }
>          </method>
>          
> -        <method name="updateStepSize" args="IGNORE_THIS_ARG">
> +        <method name="updateStepSize" args="IGNORE_THIS_ARG = null">
>              if(this['_vs']){
>                  this._vs.setAttribute("stepsize", this.inp.lineheight);
>              }
>          </method>
>          
> -        <method name="updateScrollMax" args="IGNORE_THIS_ARG">
> +        <method name="updateScrollMax" args="IGNORE_THIS_ARG = null">
>              if(this['_vs']){
> -                this._vs.setAttribute("scrollmax", this.inp.maxheight);
> +                this._vs.setAttribute("scrollmax", this.inp.scrollheight);
>              }
>          </method>
>          
> 
> Modified: openlaszlo/trunk/lps/components/incubator/test/newvscrollbar-test.lzx
> ===================================================================
> --- openlaszlo/trunk/lps/components/incubator/test/newvscrollbar-test.lzx	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/lps/components/incubator/test/newvscrollbar-test.lzx	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -4,9 +4,14 @@
>  <include href="incubator/newhscrollbar.lzx" />
>  
>  <view height="200" width="200" bgcolor="0x7F7F7F">
> -    <view height="800" width="800" />
> -    <newvscrollbar />
> -    <newhscrollbar />
> +    <view height="800" width="800" name="foo">
> +        <handler name="onclick">
> +            setAttribute('width', this.width > 100 ? 100 : 800); 
> +            setAttribute('height', this.height > 100 ? 100 : 800);
> +        </handler>
> +    </view>
> +    <newvscrollbar scrolltarget="$once{parent.foo}" axis="y" scrollattr="y"/>
> +    <newhscrollbar scrolltarget="$once{parent.foo}" axis="x" scrollattr="x"/>
>  </view>
>  </canvas>
>  <!-- * X_LZ_COPYRIGHT_BEGIN ***************************************************
> 
> Modified: openlaszlo/trunk/lps/components/incubator/test/scrolledittext-test.lzx
> ===================================================================
> --- openlaszlo/trunk/lps/components/incubator/test/scrolledittext-test.lzx	2009-02-04 02:40:23 UTC (rev 12742)
> +++ openlaszlo/trunk/lps/components/incubator/test/scrolledittext-test.lzx	2009-02-04 04:06:10 UTC (rev 12743)
> @@ -8,19 +8,25 @@
>  
>      <simplelayout axis="x" spacing="6"/>
>      
> -    <view>
> +    <view bgcolor="papayawhip">
>          <simplelayout axis="y" spacing="6"/>
> -        <scrolledittext name="set1" x="20" y="20" width="300" height="200" vscrollbarclassname="newvscrollbar">this is the fun scrolledittext</scrolledittext>
> +        <scrolledittext id="set1" x="20" y="20" width="300" height="100" vscrollbarclassname="newvscrollbar">this is the fun scrolledittext</scrolledittext>
>          <button>Wider
> -            <handler name="onclick">this.parent.set1.setAttribute("width", 350);</handler>
> +            <handler name="onclick">set1.setAttribute("width", set1.width + 20);</handler>
>          </button>
> +        <button>Taller
> +            <handler name="onclick">set1.setAttribute("height", set1.height + 20);</handler>
> +        </button>
> +        <button>Change style
> +            <handler name="onclick">set1.inp.setAttribute("fontsize", set1.inp.fontsize != 9 ? 9 : 11);</handler>
> +        </button>
>      </view>
>  
> -        <scrolledittext x="20" y="20" width="300" height="200" vscrollbarclassname="newvscrollbar">this is the fun scrolledittext</scrolledittext>
> +        <!--scrolledittext x="20" y="20" width="300" height="200" vscrollbarclassname="newvscrollbar">this is the fun scrolledittext</scrolledittext-->
>  
>  </canvas>
>  <!-- * X_LZ_COPYRIGHT_BEGIN ***************************************************
> -* Copyright 2006-2007 Laszlo Systems, Inc. All Rights Reserved.               *
> +* Copyright 2006-2007, 2009 Laszlo Systems, Inc. All Rights Reserved.               *
>  * Use is subject to license terms.                                            *
>  * X_LZ_COPYRIGHT_END ****************************************************** -->
>  <!-- @LZX_VERSION@                                                         -->
> 
> 
> _______________________________________________
> Laszlo-checkins mailing list
> Laszlo-checkins at openlaszlo.org
> http://www.openlaszlo.org/mailman/listinfo/laszlo-checkins

-- 
Regards,
Max Carlson
OpenLaszlo.org


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