Package org.eclipse.jface.text
Interface ITextViewerExtension4
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- All Known Implementing Classes:
ProjectionViewer,SourceViewer,TextConsoleViewer,TextViewer
public interface ITextViewerExtension4Extension interface forITextViewer. 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
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description voidaddTextPresentationListener(ITextPresentationListener listener)Adds the given text presentation listener to this text viewer.booleanmoveFocusToWidgetToken()Instructs the receiver to request theIWidgetTokenKeepercurrently holding the widget token to take the keyboard focus.voidremoveTextPresentationListener(ITextPresentationListener listener)Removes the given text presentation listener from this text viewer.
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Method Detail
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moveFocusToWidgetToken
boolean moveFocusToWidgetToken()
Instructs the receiver to request theIWidgetTokenKeepercurrently holding the widget token to take the keyboard focus.- Returns:
trueif there was anyIWidgetTokenKeeperthat was asked to take the focus,falseotherwise
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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
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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
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