Hi, Don't know if it can help but what I used to do was to build the datagrid dynamically when a relative to the data-structure I received, setting the headers in the same time, then display this new instance at the place of the last one.
Frédéric THOMAS > From: [email protected] > To: [email protected] > Subject: AW: AW: how to updateDisplayList() in custom headerRenderer? (help!) > Date: Tue, 2 Dec 2014 11:45:58 +0000 > > I tried it also and also tried some other ways but nothing works. I've no > idea how to get it working with an headerRenderer, sorry. > Perhaps Alex could help? > > Olaf > > > > > -----Ursprüngliche Nachricht----- > Von: [email protected] [mailto:[email protected]] > Gesendet: Montag, 1. Dezember 2014 21:06 > An: users, apache > Betreff: Re: AW: how to updateDisplayList() in custom headerRenderer? (help!) > > Thanks Olaf, > > I tried to implement by making a public bindable variable "myCondition" in > the header renderer and then binding it to the TextInput text property (e.g. > <s:TextInput text="{myCondition}".../>). > > but I get the same results -- the variable myCondition is correctly > transferred to the header renderer the FIRST time it is created, but after > that, changes to variable myCondition in the main application do not show up > in the header. Any idea what I'm doing wrong? > > ----- Original Message ----- > > From: "Olaf Krüger" <[email protected]> > To: "users, apache" <[email protected]> > Sent: Monday, December 1, 2014 6:59:35 AM > Subject: AW: how to updateDisplayList() in custom headerRenderer? (help!) > > If your question is "How to pass additional data to an item renderer" this > could work for you: > (Take a look at the links to understand how it works) > > /** > * Pass additional data to a Renderer > * > * @see > http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/mx/core/ClassFactory.html > * @see > http://stackoverflow.com/questions/528796/flex-sending-a-parameter-to-a-custom-itemrenderer > */ > public static function createHeaderRenderer (renderer:Class, > myCondition:Number):IFactory { var factory:ClassFactory = new > ClassFactory(renderer); factory.properties = { myCondition: myCondition }; > return factory; } > > … > <s:GridColumn headerRenderer="{createHeaderRenderer(MyHeaderRenderer, > myCondition)}"/> … > > > > > > -----Ursprüngliche Nachricht----- > Von: [email protected] [mailto:[email protected]] > Gesendet: Montag, 1. Dezember 2014 15:20 > An: users, apache > Betreff: Re: how to updateDisplayList() in custom headerRenderer? (help!) > > Hello again, I haven't got any response and was just hoping I could entice > someone to review my question below. > > The code implements a textbook method to update the client model when someone > changes the text in a spark TextInput located in a header renderer. This > works fine. I just need to know a textbook method to go the other direction > -- that is, how to programmatically update the text in the TextInput? I'm > sure there's some standard way to do this, but I can't figure it out. Any > hints much appreciated. I've tried to copy all the relevant code below. > > ----- Original Message ----- > > From: [email protected] > To: "users, apache" <[email protected]> > Sent: Saturday, November 29, 2014 7:12:47 PM > Subject: how to updateDisplayList() in custom headerRenderer? > > I'm using 4.12 SDK and trying to update a headerRenderer that includes a > TextInput. Things works fine when the component is initialized. But > thereafter, when I change the model such that the text showing in the > TextInput box should change, the text doesn't change. > > Can someone help me figure out how to programmatically refresh the header > renderer TextInput text using function updateCondition() in file MyView.mxml > below? > > I've tried create a temp IFactory for the header renderer, null the original > one, then save the temp back to the original, but this didn't work. Also > tried invalidateDisplayList() on myGrid (didn't work either). > > Here's MyHeaderRenderer.mxml: > > <?xml version="1.0" encoding="utf-8"?> > <s:GridItemRenderer > xmlns:fx="http://ns.adobe.com/mxml/2009"; > xmlns:s="library://ns.adobe.com/flex/spark" > xmlns:mx="library://ns.adobe.com/flex/mx" > xmlns:itemRenderers="com.example.views.itemRenderers.*"> > > <fx:Script> > <![CDATA[ > import mx.collections.ArrayCollection; > import com.example.views.components.MyGrid; > > public function ti_focusOut():void { > MyGrid(this.owner['parentDocument']).myCondition=Number(ti.text); > MyGrid(this.owner['parentDocument']).dispatchEvent(new > Event("myConditionChanged")); } > > override protected function updateDisplayList(unscaledWidth:Number, > unscaledHeight:Number):void { if (this.owner['parentDocument'] && ti && > MyGrid(this.owner['parentDocument']).myCondition) { > ti.text=String(MyGrid(this.owner['parentDocument']).myCondition); > } > super.updateDisplayList(unscaledWidth,unscaledHeight); > } > ]]> > </fx:Script> > <s:states> > <s:State name="normal"/> > </s:states> > <s:TextInput id="ti" width="40" focusOut="ti_focusOut();"/> > </s:GridItemRenderer> > > > and here's MyGrid.mxml: > > <?xml version="1.0" encoding="utf-8"?> > <s:Group xmlns:fx="http://ns.adobe.com/mxml/2009"; > xmlns:s="library://ns.adobe.com/flex/spark" > xmlns:mx="library://ns.adobe.com/flex/mx"> > > <fx:Metadata> > [Event(name="myConditionChanged", type="flash.events.Event")] </fx:Metadata> > > <fx:Script> > <![CDATA[ > ... > [Bindable] private var _myCondition:Number; public function set > myCondition(value:Number):void { _myCondition=value; if > (grid.columnHeaderGroup) { > grid.columnHeaderGroup.layout.clearVirtualLayoutCache(); > grid.columnHeaderGroup.invalidateDisplayList(); > } > grid.invalidateDisplayList(); > } > [Bindable] public function get myCondition():Number { return _myCondition; } > ... > ]]> > </fx:Script> > > <s:DataGrid id="grid"> > <s:columns> > <s:ArrayList> > <s:GridColumn .../> > <s:GridColumn id="myColumn" dataField="myCond" > headerRenderer="com.example.views.itemRenderers.MyHeaderRenderer"/> > <s:GridColumn .../> > </s:ArrayList> > </s:columns> > </s:DataGrid> > </s:Group> > > and finally, here is MyView.mxml: > > <?xml version="1.0" encoding="utf-8"?> > <views:View xmlns:fx="http://ns.adobe.com/mxml/2009"; > xmlns:s="library://ns.adobe.com/flex/spark" > xmlns:mx="library://ns.adobe.com/flex/mx" > xmlns:components="com.example.views.components.*"> > ... > <fx:Script> > <![CDATA[ > private function updateCondition():void { myGrid.myCondition=newValue; // how > to force refresh of TextInput in header renderer with newValue? > } > private function onChange():void { > ... > } > ]]> > </fx:Script> > <components:MyGrid id="myGrid" myConditionChanged="onChange();"/> > ... > </views:View> > > > ________________________________ > > Edscha Holding GmbH > Sitz der Gesellschaft: Remscheid > Registergericht: Wuppertal, HRB 22889 > Geschäftsführung: Francisco J. Riberas Mera, Francisco López Peña, David > Vázquez Pascual, Torsten Greiner, Markus Kirchner, Hans-Peter Schulz und > Volker Weiss > > Vertretungsberechtigt sind nur Geschäftsführer und schriftlich > Bevollmächtigte. > > Solely Managing Directors or employees with a written proxy have got power of > representation. > > Der Inhalt dieser E-Mail einschließlich etwaiger beigefügter Dateien ist > vertraulich und nur für den Empfänger bestimmt. Sollten Sie nicht der > bestimmungsgemäße Empfänger sein, ist Ihnen jegliche Offenlegung, > Vervielfältigung, Weitergabe oder Nutzung des Inhalts untersagt. Bitte > informieren Sie in diesem Fall unverzüglich den Absender und löschen Sie die > E-Mail einschließlich etwaiger beigefügter Dateien von Ihrem System. Vielen > Dank. > > The contents of this e-mail including any attachments are confidential and > may be legally privileged. If you are not the intended recipient, any > disclosure, copying, distribution or use of its contents is strictly > prohibited, and you should please notify the sender immediately and then > delete this e-mail including any attachments from your system. Thank you. > > > ________________________________ > > Edscha Holding GmbH > Sitz der Gesellschaft: Remscheid > Registergericht: Wuppertal, HRB 22889 > Geschäftsführung: Francisco J. Riberas Mera, Francisco López Peña, David > Vázquez Pascual, Torsten Greiner, Markus Kirchner, Hans-Peter Schulz und > Volker Weiss > > Vertretungsberechtigt sind nur Geschäftsführer und schriftlich > Bevollmächtigte. > > Solely Managing Directors or employees with a written proxy have got power of > representation. > > Der Inhalt dieser E-Mail einschließlich etwaiger beigefügter Dateien ist > vertraulich und nur für den Empfänger bestimmt. Sollten Sie nicht der > bestimmungsgemäße Empfänger sein, ist Ihnen jegliche Offenlegung, > Vervielfältigung, Weitergabe oder Nutzung des Inhalts untersagt. Bitte > informieren Sie in diesem Fall unverzüglich den Absender und löschen Sie die > E-Mail einschließlich etwaiger beigefügter Dateien von Ihrem System. Vielen > Dank. > > The contents of this e-mail including any attachments are confidential and > may be legally privileged. If you are not the intended recipient, any > disclosure, copying, distribution or use of its contents is strictly > prohibited, and you should please notify the sender immediately and then > delete this e-mail including any attachments from your system. Thank you.
