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  1. #1
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    Default HTMLTable getWidget/setWidget and ExtGWT Component

    HTMLTable getWidget/setWidget and ExtGWT Component


    Hi,

    I noticed that HTMLTable getWidget(int row, int column) always return null when the widget is a Ext GWT Component.

    Looking at the code it looks like HTMLTable is relying on getWidgetIndex(Element elem) to return the __widgetID attribute of the elem for it to find the widget in widgetMap.

    The problem occurs because Ext GWT Component getElement() method returns a dummy div when it's not rendered. It looks like the __widgetID is set on the dummy div but when you do a getWidget on HTMLTable it can't find the right widget since __widgetID is not set on the swapped in element.

    Code:
            final FlexTable foo = new FlexTable();
    
            final LayoutContainer bar = new LayoutContainer();
            bar.add(new HTML("<h1>HERE</h1>"));
    
    
            RootPanel.get().add(foo);
    
            foo.setWidget(0, 0, bar);
            foo.setWidget(1, 1, new HTML("<h2>THERE</h2>"));
    
            System.out.println(foo.getWidget(0, 0)); /* this is null but shouldn't be */
            System.out.println(foo.getWidget(1, 1));

  2. #2
    Sencha - GXT Dev Team darrellmeyer's Avatar
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    Default


    Thanks for looking into the problem. I have changed the code in Component to grab and set the widget id from the dummy element. I also changed getElement to only create the dummy element once, not every call to getElement. The test code now works, changes are in SVN.

  3. #3
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    Default GWT 1.6

    GWT 1.6


    Looks like they've changed it from "__widgetID" to "__uiObjectID" in GWT 1.6. Apparently they had two different ElementMapperImpl classes and they combined them (see http://www.mail-archive.com/google-w.../msg03129.html ).

    Consequently, this bug has now been reintroduced in GXT 2.0 (running on GWT 1.6).

  4. #4
    Software Architect
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    Changed in SVN