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From: Saju Thankathurai <sathikeshjith@gmail.com>
Date: Mon, 9 Jun 2014 10:15:26 +0530
Message-ID: 
 <CAM9ROYsuRyXAnW1eJvsH0yqsWipA_aNs96KCQKw37rvivxqC=g@mail.gmail.com>
Subject: Re: Spark datagrid Issue.
To: "dev@flex.apache.org" <dev@flex.apache.org>
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Thanks, Have one runtime exception.

ReferenceError: Error #1069: Property
http://www.adobe.com/2006/flex/mx/internal::gridDimensions not found on
spark.components.Grid and there is no default value.

in the code

const dimensions:GridDimensions =3D grid.mx_internal::gridDimensions;


On Sat, Jun 7, 2014 at 8:34 PM, Fr=C3=A9d=C3=A9ric THOMAS <webdoublefx@hotm=
ail.com>
wrote:

> or even better:
>
>         private function separatorMouseDragHandler(event:GridEvent):void =
{
>             const headerGroup:GridColumnHeaderGroup =3D event.currentTarg=
et
> as GridColumnHeaderGroup;
>             if (headerGroup.dataGrid.columnsLength > 1 &&
> event.columnIndex < event.grid.columns.length -1) {
>                 dragging =3D true;
>             }
>         }
>
>         private static const BOUND_LIMIT:int =3D 5;
>
>         private function separatorMouseUpHandler(event:GridEvent):void {
>             if (dragging) {
>                 dragging =3D false;
>                 const columnIndex:int =3D event.columnIndex;
>                 const headerGroup:GridColumnHeaderGroup =3D
> event.currentTarget as GridColumnHeaderGroup;
>                 const grid:Grid =3D event.grid;
>                 const visibleColumnIndices:Vector.<int> =3D
> grid.getVisibleColumnIndices();
>                 const isVisible:Boolean =3D
> visibleColumnIndices.indexOf(columnIndex) > -1;
>                 if (visibleColumnIndices.length >=3D columnIndex + 1 &&
> isVisible) {
>                     const dimensions:GridDimensions =3D
> grid.mx_internal::gridDimensions;
>                     const visibleColumnsWidthBeforeOur:Number =3D
> dimensions.getContentWidth(columnIndex);
>                     const visibleColumnsWidthUpToOur:Number =3D
> dimensions.getContentWidth(columnIndex + 1);
>                     if (visibleColumnsWidthUpToOur + BOUND_LIMIT >
> grid.width) {
>                         const newWidth:Number =3D grid.width -
> visibleColumnsWidthBeforeOur - BOUND_LIMIT;
>                         event.column.width =3D newWidth;
>                     }
>                 }
>             }
>         }
>
> Note: I used const instead of var because I was doing java today but
> there's no differences in AS3, they are compiled in the same bytecode.
>
> Fr=C3=A9d=C3=A9ric THOMAS
>
> > From: webdoublefx@hotmail.com
> > To: dev@flex.apache.org
> > Subject: RE: Spark datagrid Issue.
> > Date: Sat, 7 Jun 2014 15:02:19 +0100
> >
> > Hi Saju,
> >
> > I guess this topic would fit better in the user mailing list, hower, no=
t
> sure I understood your question, anyway I assumed you meant drag (instead
> of scroll) the header because in a Spark DataGrid, the header is not
> drag-able, so, to restrict the size of the header to make at least one
> other column header to stay visible, I would do something like this:
> >
> > <?xml version=3D"1.0" encoding=3D"utf-8"?>
> > <s:WindowedApplication xmlns:fx=3D"http://ns.adobe.com/mxml/2009"
> >                        xmlns:s=3D"library://ns.adobe.com/flex/spark"
> >                        xmlns:mx=3D"library://ns.adobe.com/flex/mx"
> >                        initialize=3D"initData()">
> >     <fx:Script>
> > <![CDATA[
> >         import mx.collections.*;
> >         import mx.events.FlexEvent;
> >
> >         import spark.components.Grid;
> >
> >         import spark.components.GridColumnHeaderGroup;
> >         import spark.components.gridClasses.GridDimensions;
> >
> >         import spark.events.GridEvent;
> >
> >         import mx.core.mx_internal;
> >
> >         private var dgArray:Array =3D [
> >             {Artist: 'Pavement', Album: 'Slanted and Enchanted', Price:
> 11.99},
> >             {Artist: 'Pavement', Album: 'Brighten the Corners', Price:
> 11.99}
> >         ];
> >         [Bindable]
> >         public var initDG:ArrayCollection;
> >         private var dragging:Boolean;
> >         // Initialize initDG variable from the Array.
> >         public function initData():void {
> >             initDG =3D new ArrayCollection(dgArray);
> >         }
> >
> >         private function
> myGrid_creationCompleteHandler(event:FlexEvent):void {
> >             var dg:DataGrid =3D event.currentTarget as DataGrid;
> >             dg.removeEventListener(FlexEvent.CREATION_COMPLETE,
> myGrid_creationCompleteHandler);
> >
> >
> dg.columnHeaderGroup.addEventListener(GridEvent.SEPARATOR_MOUSE_DRAG,
> separatorMouseDragHandler);
> >
> dg.columnHeaderGroup.addEventListener(GridEvent.SEPARATOR_MOUSE_UP,
> separatorMouseUpHandler);
> >         }
> >
> >         private function separatorMouseDragHandler(event:GridEvent):voi=
d
> {
> >             const headerGroup:GridColumnHeaderGroup =3D
> event.currentTarget as GridColumnHeaderGroup;
> >             if (headerGroup.dataGrid.columnsLength > 1) {
> >                 dragging =3D true;
> >             }
> >         }
> >
> >         private static const BOUND_SPACE:int =3D 5;
> >
> >         private function separatorMouseUpHandler(event:GridEvent):void =
{
> >             if (dragging) {
> >                 dragging =3D false;
> >                 const columnIndex:int =3D event.columnIndex;
> >                 const headerGroup:GridColumnHeaderGroup =3D
> event.currentTarget as GridColumnHeaderGroup;
> >                 const grid:Grid =3D event.grid;
> >                 const visibleColumnIndices:Vector.<int> =3D
> grid.getVisibleColumnIndices();
> >                 const isVisible:Boolean =3D
> visibleColumnIndices.indexOf(columnIndex) > -1;
> >                 if (visibleColumnIndices.length >=3D columnIndex + 1 &&
> isVisible) {
> >                     const visibleColumnsWidthBeforeOur:Number =3D
> grid.mx_internal::gridDimensions.getContentWidth(columnIndex);
> >                     const visibleColumnsWidthUpToOur:Number =3D
> grid.mx_internal::gridDimensions.getContentWidth(columnIndex + 1);
> >                     if (visibleColumnsWidthUpToOur + BOUND_SPACE >
> grid.width) {
> >                         const newWidth:Number =3D
> visibleColumnsWidthUpToOur - visibleColumnsWidthBeforeOur - BOUND_SPACE;
> >                         event.column.width =3D newWidth;
> >                     }
> >                 }
> >             }
> >         }
> >         ]]>
> > </fx:Script>
> >     <s:DataGrid id=3D"myGrid"
> >                 width=3D"350" height=3D"200"
> >                 dataProvider=3D"{initDG}"
> >                 horizontalScrollPolicy=3D"off"
> >
> creationComplete=3D"myGrid_creationCompleteHandler(event)"/>
> > </s:WindowedApplication>
> >
> > HTH,
> > Fr=C3=A9d=C3=A9ric THOMAS
> >
> > > Date: Sat, 7 Jun 2014 16:23:16 +0530
> > > Subject: Fwd: Spark datagrid Issue.
> > > From: sathikeshjith@gmail.com
> > > To: dev@flex.apache.org
> > >
> > > Any help in this regard..
> > >
> > > --
> > > Saju Thankathurai
> > >
> > > Sent from my Samsung Galaxy Ace.
> > > ---------- Forwarded message ----------
> > > From: "Saju Thankathurai" <sathikeshjith@gmail.com>
> > > Date: 7 Jun 2014 08:06
> > > Subject: Spark datagrid Issue.
> > > To: "users@flex.apache.org" <users@flex.apache.org>
> > >
> > > Hi,
> > >
> > > I have a spark flex datagrid. I have set its horizontalscrollpolicy t=
o
> off.
> > > When i scroll the header towards right completely, the header is move=
d
> and
> > > is not visible. This makes an impression that there are no more
> columns in
> > > the grid.
> > >
> > > Is there a way to restrict the columns to a certain limit towards rig=
ht
> > > when scrolling
> > >
> > > Grid has 3 columns
> > > [1].
> > >
> https://drive.google.com/file/d/0ByEkeIgKzyCaOXlVaDJ0ckhHLWM/edit?usp=3Ds=
haring
> > >
> > >
> > > After scrolling the 2nd column towards right, It makes an impression
> that
> > > there is only one column available.
> > > [2]
> > >
> https://drive.google.com/file/d/0ByEkeIgKzyCaUkR4WV91cDE1Y0E/edit?usp=3Ds=
haring
> > >
> > > Code:
> > >
> > > <?xml version=3D"1.0" encoding=3D"utf-8"?>
> > > <s:WindowedApplication xmlns:fx=3D"http://ns.adobe.com/mxml/2009"
> > >    xmlns:s=3D"library://ns.adobe.com/flex/spark"
> > >    xmlns:mx=3D"library://ns.adobe.com/flex/mx"
> > >    initialize=3D"initData()">
> > >   <fx:Script>
> > > <![CDATA[
> > > import mx.collections.*;
> > >  private var dgArray:Array =3D [
> > > {Artist:'Pavement', Album:'Slanted and Enchanted', Price:11.99},
> > >  {Artist:'Pavement', Album:'Brighten the Corners', Price:11.99}];
> > >  [Bindable]
> > >  public var initDG:ArrayCollection;
> > >  // Initialize initDG variable from the Array.
> > >  public function initData():void {
> > > initDG =3D new ArrayCollection(dgArray);
> > > }
> > >  ]]>
> > > </fx:Script>
> > >  <s:DataGrid id=3D"myGrid"
> > >  width=3D"350" height=3D"200"
> > > dataProvider=3D"{initDG}"
> > > horizontalScrollPolicy=3D"off"/>
> > >  </s:WindowedApplication>
> > >
> > >
> > >
> > > --
> > >
> > > Regards
> > > Saju Thankathurai,
> >
>
>


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Regards

Saju Thankathurai,

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