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org.eclipse.gef.editpolicies
Class XYLayoutEditPolicy
java.lang.Object
org.eclipse.gef.editpolicies.AbstractEditPolicy
org.eclipse.gef.editpolicies.GraphicalEditPolicy
org.eclipse.gef.editpolicies.LayoutEditPolicy
org.eclipse.gef.editpolicies.ConstrainedLayoutEditPolicy
org.eclipse.gef.editpolicies.XYLayoutEditPolicy
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All Implemented Interfaces:
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EditPolicy,
RequestConstants
- public abstract class XYLayoutEditPolicy
- extends
ConstrainedLayoutEditPolicy
An EditPolicy for use with Figures in
XYLayout. The constraint for
XYLayout is a
Rectangle.
Created on :Nov 12, 2002
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Since:
- 2.0
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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 org.eclipse.gef.editpolicies.
ConstrainedLayoutEditPolicy
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createAddCommand,
createChangeConstraintCommand,
createChangeConstraintCommand,
createChildEditPolicy,
getAddCommand,
getAlignChildrenCommand,
getCommand,
getConstraintFor,
getConstraintForClone,
getMoveChildrenCommand,
getResizeChildrenCommand,
translateToModelConstraint
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Methods inherited from class org.eclipse.gef.editpolicies.
LayoutEditPolicy
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activate,
createListener,
createSizeOnDropFeedback,
deactivate,
decorateChild,
decorateChildren,
eraseLayoutTargetFeedback,
eraseSizeOnDropFeedback,
eraseTargetFeedback,
getCloneCommand,
getCreateCommand,
getCreationFeedbackOffset,
getDeleteDependantCommand,
getLayoutContainer,
getOrphanChildrenCommand,
getSizeOnDropFeedback,
getSizeOnDropFeedback,
getTargetEditPart,
setListener,
showLayoutTargetFeedback,
showTargetFeedback,
undecorateChild,
undecorateChildren
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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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XYLayoutEditPolicy
public XYLayoutEditPolicy()
getConstraintFor
protected java.lang.Object getConstraintFor(
ChangeBoundsRequest request,
GraphicalEditPart child)
- Overridden to prevent sizes from becoming too small, and to prevent preferred sizes
from getting lost. If the Request is a MOVE, the existing width and height are
preserved. During RESIZE, the new width and height have a lower bound determined by
getMinimumSizeFor(GraphicalEditPart).
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Overrides:
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getConstraintFor
in class
ConstrainedLayoutEditPolicy
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Parameters:
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request - the ChangeBoundsRequest -
child - the child EditPart for which the constraint should be generated
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Returns:
- the draw2d constraint
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See Also:
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ConstrainedLayoutEditPolicy.getConstraintFor(ChangeBoundsRequest, GraphicalEditPart)
getConstraintFor
public java.lang.Object getConstraintFor(
Point p)
- Returns a Rectangle at the given Point with width and height of -1.
XYLayout uses width or height equal to '-1' to mean use the figure's
preferred size.
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Specified by:
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getConstraintFor
in class
ConstrainedLayoutEditPolicy
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Parameters:
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p - the input Point
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Returns:
- a Rectangle
getConstraintFor
public java.lang.Object getConstraintFor(
Rectangle r)
- Returns a new Rectangle equivalent to the passed Rectangle.
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Specified by:
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getConstraintFor
in class
ConstrainedLayoutEditPolicy
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Parameters:
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r - the input Rectangle
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Returns:
- a copy of the input Rectangle
getCurrentConstraintFor
protected
Rectangle getCurrentConstraintFor(
GraphicalEditPart child)
- Retrieves the child's current constraint from the
LayoutManager.
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Parameters:
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child - the child
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Returns:
- the current constraint
getLayoutOrigin
protected
Point getLayoutOrigin()
- Returns
XYLayout.getOrigin(IFigure).
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Overrides:
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getLayoutOrigin
in class
ConstrainedLayoutEditPolicy
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Returns:
- Point
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See Also:
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ConstrainedLayoutEditPolicy.getLayoutOrigin()
getMinimumSizeFor
protected
Dimension getMinimumSizeFor(
GraphicalEditPart child)
- Determines the minimum size that the specified child can be resized to. Called
from
getConstraintFor(ChangeBoundsRequest, GraphicalEditPart). By default,
a small Dimension is returned.
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Parameters:
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child - the child
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Returns:
- the minumum size
getXYLayout
protected
XYLayout getXYLayout()
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Returns:
- the XYLayout layout manager set on the
container
setXyLayout
public void setXyLayout(
XYLayout xyLayout)
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Parameters:
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xyLayout - The xyLayout to set.
showSizeOnDropFeedback
protected void showSizeOnDropFeedback(
CreateRequest request)
- Places the feedback rectangle where the User indicated.
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Overrides:
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showSizeOnDropFeedback
in class
LayoutEditPolicy
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Parameters:
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request - the CreateRequest -
See Also:
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LayoutEditPolicy.showSizeOnDropFeedback(CreateRequest)
Copyright (c) IBM Corp. and others 2000, 2007. All Rights Reserved.
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