Getting back to this issue ... As near as I can tell, when the DG gets an exception, DataGrid.focusOutHandler was never called.
Instead, calling _popup.setFocus(); in the creationComplete handler for my item-editor triggers a call to itemEditorFocusOutHandler, which ends up calling mx:DataGrid.contains() event.relatedObject which is equal to the UITextField which is owned by the TextField which is owned by my Popup class which is owned by the mx:DataGrid. But itemEditorFocusOutHandler() doesn't call owns() or itemRendererContains(); it just calls contains(). I tried moving the setFocus into the INITIALIZE event handler, but that's apparently too early to setFocus because then I get an exception trying to setFocus. I can't use my own FOCUS_OUT event handler on the item editor to cancel the event when the popup is receiving focus, because FOCUS_OUT is not cancelable. I can't override the DataGrid.itemEditorFocusOutHandler() because it's private. Any other suggestions? Thanks, Glenn On Tue, Jul 29, 2008 at 1:20 PM, Alex Harui <[EMAIL PROTECTED]> wrote: > focusOutHandler should have called itemRendererContains with your > custom class and that textfield and the owner chain should have gotten from > the textfield to the custom class. It shouldn't matter what the parent is, > you want it to be the systemManager. It should be the fifth "if" statement > > > ------------------------------ > > *From:* flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] *On > Behalf Of *Glenn Jones > *Sent:* Tuesday, July 29, 2008 9:16 AM > *To:* flexcoders@yahoogroups.com > > *Subject:* Re: [flexcoders] TextArea popup editor in DataGrid > > > > I trapped in DataGrid.itemEditorFocusOutHandler() - the chain of 'owner' > values for event.relatedObject > does goes back to the grid, but the chain of 'parent' values does not. > > The event.relatedObject is type UITTextField The owner & parent of > UITextField is an instance of TextArea. > This is the instance managed by PopUpManager. The TextArea.owner = > myCustomClass (the item editor instance), > but TextArea.parent is an instance of myApp_mx_managers_SystemManager. > > I tried calling addChild() with the popup TextArea instance, but it really > didn't lilke that - apparently PopUpManager > likes to parent all of the popups (which makes sense). > > Any other suggestions or have I reached a dead-end with this approach? > > Thanks for your help, > Glenn > > On Mon, Jul 28, 2008 at 11:41 PM, Alex Harui <[EMAIL PROTECTED]> wrote: > > Walk through the focusOutHandler on DataGrid. In theory, if the object > getting focus is owned by the itemeditor, it shouldn't try to end the edit > session. > > > ------------------------------ > > *From:* flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] *On > Behalf Of *Glenn Jones > *Sent:* Monday, July 28, 2008 3:41 PM > *To:* flexcoders@yahoogroups.com > *Subject:* Re: [flexcoders] TextArea popup editor in DataGrid > > > > I've tried using a popup TextArea but I'm having real problems trying to > get it to work as an item editor > within a datagrid. > > My business requirements are > > - someone can click in the DG cell to start editing. If the cell uses a > TextArea control, they should get popup-like TA that extends across rows to > enter longer blocks of text > - the user can enter data in any text-based editable cell without using a > mouse (but they can use a mouse if they want to) > - someone can tab across a row in the DG; our DG needs to move from one > editable cell to the next (and go to next editable row if they tab out of > the last editable cell in a row) > - the user can use shift-tab to go to previous editable cell > - the user can use ENTER to finish the edit and save the row > - the user can use ESCAPE to cancel the edit > > So I've already got all of the keyboard behavior working with a TextField > controls. It also works if I use a simple TextArea as the item editor (but > see if the beginning of the thread for my problem with a simple TextArea). > > However, when I open the TextArea with a PopUpManager I'm having problems. > My custom item editor is composed of a Canvas: > > public class PopUpTextArea extends Canvas > implements IDropInListItemRenderer, IFocusManagerComponent > > On creationComplete, the editor creates a new instance of TextArea, and > uses PopUpManager to open it. > > _popup = new TextArea(); > _popup.width= this.width; > _popup.height= EDIT_HEIGHT; > _popup.text = this._text; > _popup.owner = this; > > PopUpManager.addPopUp(_popup, this, false); > PopUpManager.bringToFront(_popup); > > But ... > > If I try to programmatically set focus on the popup, the DG crashes. > Apparently, it's getting wrapped around a pole somehow because setting focus > on the popup triggers an item-edit-end. If I click in the TA, it either > (A) goes in a little circle - item-edit-end is called because the Canvas > losses focus, so it > closes the TA, but the editedItemPosition doesn't move, so it creates a new > instance of the editor which opens the popup, or (B) it just closes the > item-editor > because the item-editor lost focus > > I also tried to capture keystrokes on the Canvas and pass them to the TA, > that didn't work either. But even if it did work, the user still needs the > ability > to use the mouse if they want to. > > So is it possible to use a TextArea in a PopUp as an item editor in a > DataGrid? > > On Fri, Jul 18, 2008 at 4:42 PM, Alex Harui <[EMAIL PROTECTED]> wrote: > > Well, you could popup a TextArea like PopUpButton does, but it sounds like > your real goal is to have the TA extend across rows and not be below the > lines. I assume you don't want the TA to fit within a single row? > > > > How will you handle the area at the bottom of the DG? If I click the last > row, should the TA extend two rows below the DG? > > > ------------------------------ > > *From:* flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] *On > Behalf Of *Glenn Jones > *Sent:* Friday, July 18, 2008 11:17 AM > *To:* flexcoders@yahoogroups.com > *Subject:* [flexcoders] TextArea popup editor in DataGrid > > > > I have a DataGrid where one of the columns is a TextArea control as the > itemEditor. > > When I edit a cell in the column with the TextArea editor, the TextArea > opens up to a height equivalent to > three rows of data in the grid. The editor works fine; in fact it's been > working this way for some time. > > But recently, we enabled horizontal and vertical grid lines on the grid. > When the TextArea editor opens up, > the datagrid horizontal grid lines are drawn across the top of the control. > > I've verified that the TextArea control is not inheriting the styles > related to grid lines > I've verified that the TextArea backgroundAlpha is 1; i.e. the text on the > rows underneath the editor is not > showing through. > > So as near as I can tell, the grid is drawing the gridlines on top of the > editor. > > Curiously, I also have a PopUpButton editor type - it does not have grid > lines drawn across when the dropdown > area that appears when the button is activated. > > Is this a known issue? Is there a workaround? > > Thanks > > > > > > >
