Mailing-List: contact users-help@flex.apache.org; run by ezmlm
Precedence: bulk
Reply-To: users@flex.apache.org
Received-SPF: pass (athena.apache.org: domain of modjklist@comcast.net
 designates 69.252.207.35 as permitted sender)
Date: Mon, 1 Dec 2014 20:06:21 +0000 (UTC)
From: modjklist@comcast.net
To: "users, apache" <users@flex.apache.org>
Message-ID: <161431994.5943375.1417464381556.JavaMail.zimbra@comcast.net>
In-Reply-To: 
 <812F1EBEEF9C1440A641A67CB91E793A01317CD782@DE00WS028.d1.edscha.org>
References: <1630280457.4732147.1417317167454.JavaMail.zimbra@comcast.net>
 <482006642.5611199.1417443626017.JavaMail.zimbra@comcast.net>
 <812F1EBEEF9C1440A641A67CB91E793A01317CD782@DE00WS028.d1.edscha.org>
Subject: Re: AW: how to updateDisplayList() in custom headerRenderer?
 (help!)
MIME-Version: 1.0
Content-Type: multipart/alternative;
	boundary="----=_Part_5943374_1127480046.1417464381555"
Thread-Topic: how to updateDisplayList() in custom headerRenderer? (help!)
Thread-Index: AQHQDXItmDQGtdKCxEyHjo0WYs8spZx60yUwbIjGk0o=

------=_Part_5943374_1127480046.1417464381555
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable

Thanks Olaf,=20

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=3D"{myCondition}".../>).=20

but I get the same results -- the variable myCondition is correctly transfe=
rred to the header renderer the FIRST time it is created, but after that, c=
hanges to variable myCondition in the main application do not show up in th=
e header. Any idea what I'm doing wrong?=20

----- Original Message -----

From: "Olaf Kr=C3=BCger" <OKrueger@edscha.com>=20
To: "users, apache" <users@flex.apache.org>=20
Sent: Monday, December 1, 2014 6:59:35 AM=20
Subject: AW: how to updateDisplayList() in custom headerRenderer? (help!)=
=20

If your question is "How to pass additional data to an item renderer" this =
could work for you:=20
(Take a look at the links to understand how it works)=20

/**=20
* Pass additional data to a Renderer=20
*=20
* @see http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/m=
x/core/ClassFactory.html=20
* @see http://stackoverflow.com/questions/528796/flex-sending-a-parameter-t=
o-a-custom-itemrenderer=20
*/=20
public static function createHeaderRenderer (renderer:Class, myCondition:Nu=
mber):IFactory=20
{=20
var factory:ClassFactory =3D new ClassFactory(renderer);=20
factory.properties =3D { myCondition: myCondition };=20
return factory;=20
}=20

=E2=80=A6=20
<s:GridColumn headerRenderer=3D"{createHeaderRenderer(MyHeaderRenderer, myC=
ondition)}"/>=20
=E2=80=A6=20


-----Urspr=C3=BCngliche Nachricht-----=20
Von: modjklist@comcast.net [mailto:modjklist@comcast.net]=20
Gesendet: Montag, 1. Dezember 2014 15:20=20
An: users, apache=20
Betreff: Re: how to updateDisplayList() in custom headerRenderer? (help!)=
=20

Hello again, I haven't got any response and was just hoping I could entice =
someone to review my question below.=20

The code implements a textbook method to update the client model when someo=
ne 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 directio=
n -- 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.=20

----- Original Message -----=20

From: modjklist@comcast.net=20
To: "users, apache" <users@flex.apache.org>=20
Sent: Saturday, November 29, 2014 7:12:47 PM=20
Subject: how to updateDisplayList() in custom headerRenderer?=20

I'm using 4.12 SDK and trying to update a headerRenderer that includes a Te=
xtInput. Things works fine when the component is initialized. But thereafte=
r, when I change the model such that the text showing in the TextInput box =
should change, the text doesn't change.=20

Can someone help me figure out how to programmatically refresh the header r=
enderer TextInput text using function updateCondition() in file MyView.mxml=
 below?=20

I've tried create a temp IFactory for the header renderer, null the origina=
l one, then save the temp back to the original, but this didn't work. Also =
tried invalidateDisplayList() on myGrid (didn't work either).=20

Here's MyHeaderRenderer.mxml:=20

<?xml version=3D"1.0" encoding=3D"utf-8"?>=20
<s:GridItemRenderer=20
xmlns:fx=3D"http://ns.adobe.com/mxml/2009"=20
xmlns:s=3D"library://ns.adobe.com/flex/spark"=20
xmlns:mx=3D"library://ns.adobe.com/flex/mx"=20
xmlns:itemRenderers=3D"com.example.views.itemRenderers.*">=20

<fx:Script>=20
<![CDATA[=20
import mx.collections.ArrayCollection;=20
import com.example.views.components.MyGrid;=20

public function ti_focusOut():void {=20
MyGrid(this.owner['parentDocument']).myCondition=3DNumber(ti.text);=20
MyGrid(this.owner['parentDocument']).dispatchEvent(new Event("myConditionCh=
anged")); }=20

override protected function updateDisplayList(unscaledWidth:Number, unscale=
dHeight:Number):void { if (this.owner['parentDocument'] && ti && MyGrid(thi=
s.owner['parentDocument']).myCondition) { ti.text=3DString(MyGrid(this.owne=
r['parentDocument']).myCondition);=20
}=20
super.updateDisplayList(unscaledWidth,unscaledHeight);=20
}=20
]]>=20
</fx:Script>=20
<s:states>=20
<s:State name=3D"normal"/>=20
</s:states>=20
<s:TextInput id=3D"ti" width=3D"40" focusOut=3D"ti_focusOut();"/> </s:GridI=
temRenderer>=20


and here's MyGrid.mxml:=20

<?xml version=3D"1.0" encoding=3D"utf-8"?>=20
<s:Group xmlns:fx=3D"http://ns.adobe.com/mxml/2009"=20
xmlns:s=3D"library://ns.adobe.com/flex/spark"=20
xmlns:mx=3D"library://ns.adobe.com/flex/mx">=20

<fx:Metadata>=20
[Event(name=3D"myConditionChanged", type=3D"flash.events.Event")] </fx:Meta=
data>=20

<fx:Script>=20
<![CDATA[=20
...=20
[Bindable] private var _myCondition:Number; public function set myCondition=
(value:Number):void { _myCondition=3Dvalue; if (grid.columnHeaderGroup) { g=
rid.columnHeaderGroup.layout.clearVirtualLayoutCache();=20
grid.columnHeaderGroup.invalidateDisplayList();=20
}=20
grid.invalidateDisplayList();=20
}=20
[Bindable] public function get myCondition():Number { return _myCondition; =
} ...=20
]]>=20
</fx:Script>=20

<s:DataGrid id=3D"grid">=20
<s:columns>=20
<s:ArrayList>=20
<s:GridColumn .../>=20
<s:GridColumn id=3D"myColumn" dataField=3D"myCond" headerRenderer=3D"com.ex=
ample.views.itemRenderers.MyHeaderRenderer"/>=20
<s:GridColumn .../>=20
</s:ArrayList>=20
</s:columns>=20
</s:DataGrid>=20
</s:Group>=20

and finally, here is MyView.mxml:=20

<?xml version=3D"1.0" encoding=3D"utf-8"?>=20
<views:View xmlns:fx=3D"http://ns.adobe.com/mxml/2009"=20
xmlns:s=3D"library://ns.adobe.com/flex/spark"=20
xmlns:mx=3D"library://ns.adobe.com/flex/mx"=20
xmlns:components=3D"com.example.views.components.*">=20
...=20
<fx:Script>=20
<![CDATA[=20
private function updateCondition():void { myGrid.myCondition=3DnewValue; //=
 how to force refresh of TextInput in header renderer with newValue?=20
}=20
private function onChange():void {=20
...=20
}=20
]]>=20
</fx:Script>=20
<components:MyGrid id=3D"myGrid" myConditionChanged=3D"onChange();"/>=20
...=20
</views:View>=20


________________________________=20

Edscha Holding GmbH=20
Sitz der Gesellschaft: Remscheid=20
Registergericht: Wuppertal, HRB 22889=20
Gesch=C3=A4ftsf=C3=BChrung: Francisco J. Riberas Mera, Francisco L=C3=B3pez=
 Pe=C3=B1a, David V=C3=A1zquez Pascual, Torsten Greiner, Markus Kirchner, H=
ans-Peter Schulz und Volker Weiss=20

Vertretungsberechtigt sind nur Gesch=C3=A4ftsf=C3=BChrer und schriftlich Be=
vollm=C3=A4chtigte.=20

Solely Managing Directors or employees with a written proxy have got power =
of representation.=20

Der Inhalt dieser E-Mail einschlie=C3=9Flich etwaiger beigef=C3=BCgter Date=
ien ist vertraulich und nur f=C3=BCr den Empf=C3=A4nger bestimmt. Sollten S=
ie nicht der bestimmungsgem=C3=A4=C3=9Fe Empf=C3=A4nger sein, ist Ihnen jeg=
liche Offenlegung, Vervielf=C3=A4ltigung, Weitergabe oder Nutzung des Inhal=
ts untersagt. Bitte informieren Sie in diesem Fall unverz=C3=BCglich den Ab=
sender und l=C3=B6schen Sie die E-Mail einschlie=C3=9Flich etwaiger beigef=
=C3=BCgter Dateien von Ihrem System. Vielen Dank.=20

The contents of this e-mail including any attachments are confidential and =
may be legally privileged. If you are not the intended recipient, any discl=
osure, 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.=20


------=_Part_5943374_1127480046.1417464381555--