Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions
Privacy Policy

  




 

 

Eclipse GEF
3.3

org.eclipse.gef.editparts
Class RootTreeEditPart

java.lang.Object
  extended by

org.eclipse.gef.editparts.AbstractEditPart
      extended by
org.eclipse.gef.editparts.RootTreeEditPart
All Implemented Interfaces:
EditPart, RequestConstants, RootEditPart, TreeEditPart

public class RootTreeEditPart
extends AbstractEditPart
implements RootEditPart, TreeEditPart

The root editpart for a TreeViewer. There is limited control of a Tree, so this root implementation should work for all purposes. This implementation does little more than hold onto the viewer, and pass the Tree to the contents as its widget.


Nested Class Summary
 
Nested classes inherited from class org.eclipse.gef.editparts. AbstractEditPart
AbstractEditPart.EditPolicyIterator
 
Field Summary
 
Fields inherited from class org.eclipse.gef.editparts. AbstractEditPart
children, FLAG_ACTIVE, FLAG_FOCUS, MAX_FLAG
 
Fields inherited from interface org.eclipse.gef. EditPart
SELECTED, SELECTED_NONE, SELECTED_PRIMARY
 
Fields inherited from interface org.eclipse.gef. RequestConstants
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
 
Constructor Summary
RootTreeEditPart ()
           
 
Method Summary
protected  void addChildVisual ( EditPart childEditPart, int index)
          This is where the child gets added.
protected  void createEditPolicies ()
          Creates the initial EditPolicies and/or reserves slots for dynamic ones.
  Command getCommand ( Request request)
          Returns the Command to perform the specified Request or null.
  EditPart getContents ()
          Returns the contents EditPart.
  DragTracker getDragTracker ( Request request)
          This method will never be called on a tree root.
  RootEditPart getRoot ()
          Returns this.
  EditPartViewer getViewer ()
          Returns the root's EditPartViewer.
 Widget getWidget ()
          The editpart holds onto the SWT Tree, which is also the contents' widget.
protected  void refreshChildren ()
          Overridden to do nothing since the child is explicitly set.
protected  void removeChildVisual ( EditPart childEditPart)
          This is where the child gets removed.
 void setContents ( EditPart editpart)
          Sets the contents EditPart.
 void setViewer ( EditPartViewer epviewer)
          Sets the root's EditPartViewer.
 void setWidget (Widget w)
          Called by TreeViewer to set the Tree into the root.
 
Methods inherited from class org.eclipse.gef.editparts. AbstractEditPart
activate, activateEditPolicies, addChild, addEditPartListener, addNotify, createChild, deactivate, deactivateEditPolicies, debug, debugFeedback, eraseSourceFeedback, eraseTargetFeedback, fireActivated, fireChildAdded, fireDeactivated, fireRemovingChild, fireSelectionChanged, getAccessibleEditPart, getAdapter, getChildren, getEditPolicy, getEditPolicyIterator, getEventListeners, getFlag, getModel, getModelChildren, getParent, getSelected, getTargetEditPart, hasFocus, installEditPolicy, isActive, isSelectable, performRequest, refresh, refreshVisuals, register, registerAccessibility, registerModel, registerVisuals, removeChild, removeEditPartListener, removeEditPolicy, removeNotify, reorderChild, setFlag, setFocus, setModel, setParent, setSelected, showSourceFeedback, showTargetFeedback, toString, understandsRequest, unregister, unregisterAccessibility, unregisterModel, unregisterVisuals
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface org.eclipse.gef. EditPart
activate, addEditPartListener, addNotify, deactivate, eraseSourceFeedback, eraseTargetFeedback, getChildren, getEditPolicy, getModel, getParent, getSelected, getTargetEditPart, hasFocus, installEditPolicy, isActive, isSelectable, performRequest, refresh, removeEditPartListener, removeEditPolicy, removeNotify, setFocus, setModel, setParent, setSelected, showSourceFeedback, showTargetFeedback, understandsRequest
 

Constructor Detail

RootTreeEditPart

public RootTreeEditPart()
Method Detail

addChildVisual

protected void addChildVisual(
EditPart childEditPart,
                              int index)
This is where the child gets added. No TreeItem is needed here because the contents is actually represented by the Tree iteself.

Specified by:
addChildVisual in class AbstractEditPart
Parameters:
childEditPart - EditPart of child to be added.
index - Position where it is to be added.
See Also:
AbstractEditPart.addChild(EditPart, int), AbstractGraphicalEditPart.removeChildVisual(EditPart)

createEditPolicies

protected void createEditPolicies()
Description copied from class: AbstractEditPart
Creates the initial EditPolicies and/or reserves slots for dynamic ones. Should be implemented to install the inital EditPolicies based on the model's initial state. null can be used to reserve a "slot", should there be some desire to guarantee the ordering of EditPolcies.

Specified by:
createEditPolicies in class AbstractEditPart
See Also:
AbstractEditPart.createEditPolicies()

getCommand

public 
Command getCommand(
Request request)
Description copied from interface: EditPart
Returns the Command to perform the specified Request or null.

Specified by:
getCommand in interface EditPart
Overrides:
getCommand in class AbstractEditPart
Parameters:
request - the Request
Returns:
a Command
See Also:
EditPart.getCommand(org.eclipse.gef.Request)

getContents

public 
EditPart getContents()
Description copied from interface: RootEditPart
Returns the contents EditPart. A RootEditPart only has a single child, called its contents.

Specified by:
getContents in interface RootEditPart
Returns:
the contents.
See Also:
RootEditPart.getContents()

getDragTracker

public 
DragTracker getDragTracker(
Request request)
This method will never be called on a tree root.

Specified by:
getDragTracker in interface EditPart
Parameters:
request - a Request indicating the context of the drag
Returns:
null or a DragTracker
See Also:
EditPart.getDragTracker(org.eclipse.gef.Request)

getRoot

public 
RootEditPart getRoot()
Returns this.

Specified by:
getRoot in interface EditPart
Overrides:
getRoot in class AbstractEditPart
See Also:
EditPart.getRoot()

getViewer

public 
EditPartViewer getViewer()
Description copied from interface: RootEditPart
Returns the root's EditPartViewer.

Specified by:
getViewer in interface RootEditPart
Overrides:
getViewer in class AbstractEditPart
See Also:
RootEditPart.getViewer()

getWidget

public Widget getWidget()
The editpart holds onto the SWT Tree, which is also the contents' widget.

Specified by:
getWidget in interface TreeEditPart
Returns:
the Widget
See Also:
TreeEditPart.getWidget()

refreshChildren

protected void refreshChildren()
Overridden to do nothing since the child is explicitly set.

Overrides:
refreshChildren in class AbstractEditPart
See Also:
AbstractEditPart.refreshChildren()

removeChildVisual

protected void removeChildVisual(
EditPart childEditPart)
This is where the child gets removed. This method is overridden here so that the AbstractTreeEditPart does not dispose the widget, which is the Tree in this case. The tree is owned by the viewer, not the child.

Specified by:
removeChildVisual in class AbstractEditPart
Parameters:
childEditPart - EditPart of child to be removed.

setContents

public void setContents(
EditPart editpart)
Description copied from interface: RootEditPart
Sets the contents EditPart. A RootEditPart only has a single child, called its contents.

Specified by:
setContents in interface RootEditPart
Parameters:
editpart - the contents
See Also:
RootEditPart.setContents(org.eclipse.gef.EditPart)

setViewer

public void setViewer(
EditPartViewer epviewer)
Description copied from interface: RootEditPart
Sets the root's EditPartViewer.

Specified by:
setViewer in interface RootEditPart
Parameters:
epviewer - the EditPartViewer
See Also:
RootEditPart.setViewer(org.eclipse.gef.EditPartViewer)

setWidget

public void setWidget(Widget w)
Called by TreeViewer to set the Tree into the root. The root simply holds onto this widget and passes it to the contents when the contents is added.

Specified by:
setWidget in interface TreeEditPart
Parameters:
w - the Widget
See Also:
org.eclipse.gef.TreeEditPart#setWidget(org.eclipse.swt.widgets.Widget)

Eclipse GEF
3.3

Copyright (c) IBM Corp. and others 2000, 2007. All Rights Reserved.

 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire