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org.eclipse.gef.editpolicies
Class TreeContainerEditPolicy
java.lang.Object
org.eclipse.gef.editpolicies.AbstractEditPolicy
org.eclipse.gef.editpolicies.TreeContainerEditPolicy
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All Implemented Interfaces:
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EditPolicy,
RequestConstants
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Direct Known Subclasses:
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AbstractTreeContainerEditPolicy
- public abstract class TreeContainerEditPolicy
- extends
AbstractEditPolicy
An EditPolicy for handling ADDS, MOVES, and CREATES on a
TreeEditPart .
This EditPolicy is responsible for displaying the insertion feedback in the Tree during
the appropriate interactions.
This EditPolicy factors the
getCommand(Request) into three different abstract
methods which subclasses must implement.
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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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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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TreeContainerEditPolicy
public TreeContainerEditPolicy()
getAddCommand
protected abstract
Command getAddCommand(
ChangeBoundsRequest request)
- Returns a Command for adding the children to the container.
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Parameters:
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request - the Request to add.
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Returns:
- Command
null or a Command to perform the add
getCreateCommand
protected abstract
Command getCreateCommand(
CreateRequest request)
- Returns a Command for creating the object inside the container.
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Parameters:
-
request - the CreateRequest
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Returns:
- Command
null or a Command to perform the create
getMoveChildrenCommand
protected abstract
Command getMoveChildrenCommand(
ChangeBoundsRequest request)
- Returns a Command for moving the children within the container.
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Parameters:
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request - the Request to move
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Returns:
- Command
null or a Command to perform the move
eraseTargetFeedback
public void eraseTargetFeedback(
Request req)
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Description copied from class:
AbstractEditPolicy
- Does nothing by default.
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Specified by:
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eraseTargetFeedback
in interface
EditPolicy
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Overrides:
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eraseTargetFeedback
in class
AbstractEditPolicy
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See Also:
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EditPolicy.eraseTargetFeedback(Request)
findIndexOfTreeItemAt
protected final int findIndexOfTreeItemAt(
Point pt)
- Calculates the index of the TreeItem at given point.
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Parameters:
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pt - the Point in the Viewer
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Returns:
- the index of the TreeItem
findTreeItemAt
protected final TreeItem findTreeItemAt(
Point pt)
- Calculates the
TreeItem at a specified
Point .
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Parameters:
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pt - the draw2d Point
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Returns:
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null or the TreeItem
getCommand
public
Command getCommand(
Request req)
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Description copied from class:
AbstractEditPolicy
- Returns
null by default. null is used to indicate that the
EditPolicy does not contribute to the specified Request .
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Specified by:
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getCommand
in interface
EditPolicy
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Overrides:
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getCommand
in class
AbstractEditPolicy
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See Also:
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EditPolicy.getCommand(Request)
getTargetEditPart
public
EditPart getTargetEditPart(
Request req)
- Returns the host EditPart when appropriate. Targeting is done by checking if the mouse
is clearly over the host's TreeItem.
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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)
showTargetFeedback
public void showTargetFeedback(
Request req)
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Description copied from class:
AbstractEditPolicy
- Does nothing by default.
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Specified by:
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showTargetFeedback
in interface
EditPolicy
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Overrides:
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showTargetFeedback
in class
AbstractEditPolicy
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See Also:
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EditPolicy.showTargetFeedback(Request)
Copyright (c) IBM Corp. and others 2000, 2007. All Rights Reserved.
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