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java.lang.Object | +--org.eclipse.gef.editpolicies.AbstractEditPolicy | +--org.eclipse.gef.editpolicies.GraphicalEditPolicy | +--org.eclipse.gef.editpolicies.SelectionEditPolicy
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.
Field Summary |
Fields inherited from interface org.eclipse.gef.EditPolicy |
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 |
Fields inherited from interface org.eclipse.gef.RequestConstants |
REQ_ADD, REQ_ALIGN, REQ_ALIGN_CHILDREN, 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 |
Constructor Summary | |
SelectionEditPolicy()
|
Method Summary | |
void |
activate()
Extends activate to hook the appropriate listener and to initialize the visual changes for representing selection/focus. |
protected void |
addSelectionListener()
Adds an EditPartListener to the host to observe selection/focus changes. |
void |
deactivate()
Extends deactivate to unhook the seleciton listener and to remove the visual changes for representing selection/focus. |
EditPart |
getTargetEditPart(Request request)
Returns null by default. |
protected void |
hideFocus()
Override to hide focus |
protected abstract void |
hideSelection()
Override to hide selection |
protected void |
removeSelectionListener()
Removes the EditPartListener used to observe selection |
protected void |
setFocus(boolean value)
Sets the internal focus value. |
protected void |
setSelectedState(int type)
Sets the internal selection value. |
protected void |
showFocus()
Override to show focus. |
protected void |
showPrimarySelection()
Calls showSelection() by default. |
protected abstract void |
showSelection()
Override to show selection |
Methods inherited from class org.eclipse.gef.editpolicies.GraphicalEditPolicy |
addFeedback, getHostFigure, getLayer, removeFeedback |
Methods inherited from class org.eclipse.gef.editpolicies.AbstractEditPolicy |
debugFeedback, eraseSourceFeedback, eraseTargetFeedback, getCommand, getHost, setHost, showSourceFeedback, showTargetFeedback, toString, understandsRequest |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
public SelectionEditPolicy()
Method Detail |
public void activate()
activate
in interface EditPolicy
activate
in class AbstractEditPolicy
EditPolicy.activate()
protected void addSelectionListener()
public void deactivate()
deactivate
in interface EditPolicy
deactivate
in class AbstractEditPolicy
EditPolicy.deactivate()
public EditPart getTargetEditPart(Request request)
AbstractEditPolicy
null
by default. null
indicates that this policy is
unable to determine the target for the specified Request
.
getTargetEditPart
in interface EditPolicy
getTargetEditPart
in class AbstractEditPolicy
EditPolicy.getTargetEditPart(Request)
protected void hideFocus()
showFocus()
protected abstract void hideSelection()
protected void removeSelectionListener()
protected void setFocus(boolean value)
showFocus()
or hideFocus()
will be
called.
value
- true
if the EditPolicy should show focusprotected void setSelectedState(int type)
type
- the type of selection the EditPolicy should displayprotected void showFocus()
hideFocus()
protected void showPrimarySelection()
showSelection()
by default. Override to distinguish between primary and
normal selection.
protected abstract void showSelection()
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