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org.eclipse.gef.editpolicies
Class SelectionEditPolicy
java.lang.Object
org.eclipse.gef.editpolicies.AbstractEditPolicy
org.eclipse.gef.editpolicies.GraphicalEditPolicy
org.eclipse.gef.editpolicies.SelectionEditPolicy
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All Implemented Interfaces:
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EditPolicy,
RequestConstants
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Direct Known Subclasses:
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SelectionHandlesEditPolicy
- public abstract class SelectionEditPolicy
- extends
GraphicalEditPolicy
A GraphicalEditPolicy that is sensitive to the host's selection. The overall selection
of the host EditPart includes whether or not it has focus. Subclasses will typically
decorate the GraphicalEditPart with things like selection handles and/or focus
feedback.
This EditPolicy adds itself as an
EditPartListener so that it can observe
selection. When selection or focus changes, the EditPolicy will update itself and call
the appropriate methods.
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Since:
- 2.0
Fields inherited from interface org.eclipse.gef.
EditPolicy
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COMPONENT_ROLE,
CONNECTION_BENDPOINTS_ROLE,
CONNECTION_ENDPOINTS_ROLE,
CONNECTION_ROLE,
CONTAINER_ROLE,
DIRECT_EDIT_ROLE,
GRAPHICAL_NODE_ROLE,
LAYOUT_ROLE,
NODE_ROLE,
PRIMARY_DRAG_ROLE,
SELECTION_FEEDBACK_ROLE,
TREE_CONTAINER_ROLE
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Fields inherited from interface org.eclipse.gef.
RequestConstants
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REQ_ADD,
REQ_ALIGN,
REQ_ALIGN_CHILDREN,
REQ_CLONE,
REQ_CONNECTION_END,
REQ_CONNECTION_START,
REQ_CREATE,
REQ_CREATE_BENDPOINT,
REQ_DELETE,
REQ_DELETE_DEPENDANT,
REQ_DIRECT_EDIT,
REQ_MOVE,
REQ_MOVE_BENDPOINT,
REQ_MOVE_CHILDREN,
REQ_OPEN,
REQ_ORPHAN,
REQ_ORPHAN_CHILDREN,
REQ_RECONNECT_SOURCE,
REQ_RECONNECT_TARGET,
REQ_RESIZE,
REQ_RESIZE_CHILDREN,
REQ_SELECTION,
REQ_SELECTION_HOVER
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Method Summary
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void
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activate
()
Extends activate to hook the appropriate listener and to initialize the visual changes
for representing selection/focus. |
protected void
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addSelectionListener
()
Adds an EditPartListener to the host to observe selection/focus changes. |
void
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deactivate
()
Extends deactivate to unhook the seleciton listener and to remove the visual
changes for representing selection/focus. |
EditPart
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getTargetEditPart
(
Request request)
Returns null by default. |
protected void
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hideFocus
()
Override to hide focus |
protected abstract void
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hideSelection
()
Override to hide selection |
protected void
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removeSelectionListener
()
Removes the EditPartListener used to observe selection |
protected void
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setFocus
(boolean value)
Sets the internal focus value. |
protected void
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setSelectedState
(int type)
Sets the internal selection value. |
protected void
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showFocus
()
Override to show focus. |
protected void
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showPrimarySelection
()
Calls
showSelection() by default. |
protected abstract void
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showSelection
()
Override to show selection |
Methods inherited from class java.lang.Object
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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SelectionEditPolicy
public SelectionEditPolicy()
activate
public void activate()
- Extends activate to hook the appropriate listener and to initialize the visual changes
for representing selection/focus.
-
-
Specified by:
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activate
in interface
EditPolicy
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Overrides:
-
activate
in class
AbstractEditPolicy
-
-
See Also:
-
EditPolicy.activate()
addSelectionListener
protected void addSelectionListener()
- Adds an EditPartListener to the host to observe selection/focus changes.
-
deactivate
public void deactivate()
- Extends deactivate to unhook the seleciton listener and to remove the visual
changes for representing selection/focus.
-
-
Specified by:
-
deactivate
in interface
EditPolicy
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Overrides:
-
deactivate
in class
AbstractEditPolicy
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See Also:
-
EditPolicy.deactivate()
getTargetEditPart
public
EditPart getTargetEditPart(
Request request)
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Description copied from class:
AbstractEditPolicy
- Returns
null by default. null indicates that this policy is
unable to determine the target for the specified Request .
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Specified by:
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getTargetEditPart
in interface
EditPolicy
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Overrides:
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getTargetEditPart
in class
AbstractEditPolicy
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-
See Also:
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EditPolicy.getTargetEditPart(Request)
hideFocus
protected void hideFocus()
- Override to hide focus
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-
See Also:
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showFocus()
hideSelection
protected abstract void hideSelection()
- Override to hide selection
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removeSelectionListener
protected void removeSelectionListener()
- Removes the EditPartListener used to observe selection
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setFocus
protected void setFocus(boolean value)
- Sets the internal focus value. This method is called automatically by the listener. If
the focus value is changed, either
showFocus() or
hideFocus() will be
called.
-
-
Parameters:
-
value - true if the EditPolicy should show focus
setSelectedState
protected void setSelectedState(int type)
- Sets the internal selection value. This method is called automatically by the listener.
If the selection value is changed, the appropriate method is called to show the
specified selection type.
-
-
Parameters:
-
type - the type of selection the EditPolicy should display
showFocus
protected void showFocus()
- Override to show focus.
-
-
See Also:
-
hideFocus()
showPrimarySelection
protected void showPrimarySelection()
- Calls
showSelection() by default. Override to distinguish between primary and
normal selection.
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showSelection
protected abstract void showSelection()
- Override to show selection
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Copyright (c) IBM Corp. and others 2000, 2007. All Rights Reserved.
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