![]() ![]() Rather than write a new widget from scratch, here’s a shortcut for constructing a widget from an existing DOM element.įirst subclass AbsolutePanel. Thus the message generally reveals an actual problem that was going unnoticed. If the element can change arbitrarily, all kinds of things can go wrong.Ĭalling the setElement() method more than once almost always happens unintentionally (for example, extending a widget that calls setElement() in its constructor then calling it again from the subclass constructor). Setting a widget’s element to an arbitrary new element would break all sorts of assumptions made by most widgets that is, it makes it impossible for a widget to make any assumptions about the stability of its underlying element. This assertion was loosened in GWT 1.4 but is back in GWT 1.5. Trying to call the setElement() method on a widget after it’s already been initialized is illegal. The message indicates that some widget is calling the setElement() method more than once. International characters don’t display correctlyĬompiler AssertionError: Element may only be set onceĪfter upgrading to GWT 1.5, you might see this exception: Uncaught exception escaped. ![]() ImageBundle images not showing in Internet Explorer.Invalid memory access of location 00000000 rip=01160767, or similar.RuntimeException: Installation problem detected, please reinstall GWT.GWT History feature is broken in Safari 2.0.ServletException: Content-Type must be ‘text/plain’.InternalError: Can’t connect to X11 window. ![]()
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