Package org.eclipse.jface.text

Interface ITextViewerExtension4

  • All Known Implementing Classes:
    ProjectionViewer, SourceViewer, TextConsoleViewer, TextViewer
    public interface ITextViewerExtension4
    Extension interface for ITextViewer. Introduces the concept of text presentation listeners and improves focus handling among widget token keepers.

    A ITextPresentationListeneris a listener that is informed by the viewer that a text presentation is about to be applied. During this callback the listener is allowed to modify the presentation. Text presentation listeners are thus a mean to participate in the process of text presentation creation.

    Since:
    3.0

    • Method Detail

      • moveFocusToWidgetToken

        boolean moveFocusToWidgetToken()
        Instructs the receiver to request the IWidgetTokenKeeper currently holding the widget token to take the keyboard focus.
        Returns:
        true if there was any IWidgetTokenKeeper that was asked to take the focus, false otherwise

      • addTextPresentationListener

        void addTextPresentationListener​(ITextPresentationListener listener)
        Adds the given text presentation listener to this text viewer. This call has no effect if the listener is already registered with this text viewer.
        Parameters:
        listener - the text presentation listener

      • removeTextPresentationListener

        void removeTextPresentationListener​(ITextPresentationListener listener)
        Removes the given text presentation listener from this text viewer. This call has no effect if the listener is not registered with this text viewer.
        Parameters:
        listener - the text presentation listener