Package org.eclipse.gef.ui.parts
Class GraphicalViewerKeyHandler
java.lang.Object
org.eclipse.gef.KeyHandler
org.eclipse.gef.ui.parts.GraphicalViewerKeyHandler
- Direct Known Subclasses:
PaletteViewerKeyHandler
An extended KeyHandler which processes default keystrokes for common
navigation in a GraphicalViewer. This class can be used as a KeyHandler too;
Unrecognized keystrokes are sent to the super's implementation. This class
will process key events containing the following:
- Arrow Keys (UP, DOWN, LEFT, RIGHT) with optional SHIFT and CTRL modifiers to navigate between siblings.
- Arrow Keys (UP, DOWN) same as above, but with ALT modifier to navigate into or out of a container.
- '\'Backslash and '/' Slash keys with optional SHIFT and CTRL modifiers to traverse connections.
All processed key events will do nothing other than change the selection and/or focus editpart for the viewer.
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Constructor Summary
ConstructorsConstructorDescriptionConstructs a key handler for the given viewer. -
Method Summary
Modifier and TypeMethodDescriptionprotected GraphicalEditPart
protected List<? extends GraphicalEditPart>
Returns the list of editparts which are conceptually at the same level of navigation as the currently focused editpart.protected GraphicalViewer
Returns the viewer on which this key handler was created.protected boolean
boolean
keyPressed
(KeyEvent event) Extended to process key events described above.protected void
navigateTo
(EditPart part, KeyEvent event) Navigates to the given EditPartprotected void
processSelect
(KeyEvent event) This method is invoked when the user presses the space bar.Methods inherited from class org.eclipse.gef.KeyHandler
keyReleased, put, remove, setParent
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Constructor Details
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GraphicalViewerKeyHandler
Constructs a key handler for the given viewer.- Parameters:
viewer
- the viewer
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Method Details
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getFocusEditPart
- Returns:
- the EditPart that has focus
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getViewer
Returns the viewer on which this key handler was created.- Returns:
- the viewer
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isViewerMirrored
protected boolean isViewerMirrored()- Returns:
true
if the viewer is mirrored- Since:
- 3.4
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keyPressed
Extended to process key events described above.- Overrides:
keyPressed
in classKeyHandler
- Parameters:
event
- the KeyEvent- Returns:
true
if KeyEvent was handled in some way- See Also:
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processSelect
This method is invoked when the user presses the space bar. It toggles the selection of the EditPart that currently has focus.- Parameters:
event
- the key event received
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