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org.eclipse.gef.tools
Class DragEditPartsTracker
java.lang.Object
org.eclipse.gef.util.FlagSupport
org.eclipse.gef.tools.AbstractTool
org.eclipse.gef.tools.TargetingTool
org.eclipse.gef.tools.SelectEditPartTracker
org.eclipse.gef.tools.DragEditPartsTracker
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All Implemented Interfaces:
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DragTracker,
RequestConstants,
Tool
- public class DragEditPartsTracker
- extends
SelectEditPartTracker
A DragTracker that moves
EditParts.
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Field Summary
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protected static int
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MAX_FLAG
Max flag |
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Fields inherited from class org.eclipse.gef.tools.
AbstractTool
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MAX_STATE,
MOUSE_BUTTON_ANY,
MOUSE_BUTTON1,
MOUSE_BUTTON2,
MOUSE_BUTTON3,
PROPERTY_UNLOAD_WHEN_FINISHED,
STATE_ACCESSIBLE_DRAG,
STATE_ACCESSIBLE_DRAG_IN_PROGRESS,
STATE_DRAG,
STATE_DRAG_IN_PROGRESS,
STATE_INITIAL,
STATE_INVALID,
STATE_TERMINAL
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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.tools.
SelectEditPartTracker
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calculateCursor,
getSourceEditPart,
handleButtonDown,
handleDoubleClick,
handleDragStarted,
hasSelectionOccurred,
performConditionalSelection,
performDirectEdit,
performOpen,
performSelection,
resetFlags,
setSourceEditPart
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Methods inherited from class org.eclipse.gef.tools.
TargetingTool
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doAutoexpose,
eraseTargetFeedback,
getAutoexposeHelper,
getTargetEditPart,
getTargetingConditional,
getTargetRequest,
handleEnteredEditPart,
handleExitingEditPart,
handleHoverStop,
handleLeavingEditPart,
handleViewerExited,
isShowingTargetFeedback,
isTargetLocked,
lockTargetEditPart,
resetHover,
setTargetRequest,
showTargetFeedback,
unlockTargetEditPart,
updateAutoexposeHelper,
updateTargetUnderMouse
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Methods inherited from class org.eclipse.gef.tools.
AbstractTool
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acceptArrowKey,
activate,
addFeedback,
applyProperty,
debug,
executeCommand,
executeCurrentCommand,
focusGained,
focusLost,
getCurrentCommand,
getCurrentInput,
getCurrentViewer,
getDebugNameForState,
getDisabledCursor,
getDomain,
getDragMoveDelta,
getLocation,
getOperationSet,
getStartLocation,
getState,
handleCommandStackChanged,
handleDrag,
handleFinished,
handleFocusGained,
handleFocusLost,
handleKeyTraversed,
handleMove,
handleNativeDragFinished,
handleNativeDragStarted,
handleViewerEntered,
isActive,
isHoverActive,
isInState,
isViewerImportant,
keyDown,
keyTraversed,
keyUp,
mouseDoubleClick,
mouseDown,
mouseDrag,
mouseHover,
mouseMove,
mouseUp,
mouseWheelScrolled,
movedPastThreshold,
nativeDragFinished,
nativeDragStarted,
performViewerMouseWheel,
placeMouseInViewer,
reactivate,
refreshCursor,
releaseToolCapture,
removeFeedback,
setCurrentCommand,
setCursor,
setDefaultCursor,
setDisabledCursor,
setEditDomain,
setHoverActive,
setProperties,
setStartLocation,
setToolCapture,
setUnloadWhenFinished,
setViewer,
stateTransition,
unloadWhenFinished,
viewerEntered,
viewerExited
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Methods inherited from class java.lang.Object
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.eclipse.gef.
Tool
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activate,
focusGained,
focusLost,
keyDown,
keyTraversed,
keyUp,
mouseDoubleClick,
mouseDown,
mouseDrag,
mouseHover,
mouseMove,
mouseUp,
mouseWheelScrolled,
nativeDragFinished,
nativeDragStarted,
setEditDomain,
setProperties,
setViewer,
viewerEntered,
viewerExited
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MAX_FLAG
protected static final int MAX_FLAG
- Max flag
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See Also:
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Constant Field Values
DragEditPartsTracker
public DragEditPartsTracker(
EditPart sourceEditPart)
- Constructs a new DragEditPartsTracker with the given source edit part.
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Parameters:
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sourceEditPart - the source edit part
getDefaultCursor
protected Cursor getDefaultCursor()
- Returns the cursor used under normal conditions.
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Overrides:
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getDefaultCursor
in class
AbstractTool
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Returns:
- the default cursor
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See Also:
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AbstractTool.setDefaultCursor(Cursor)
commitDrag
public void commitDrag()
- Erases feedback and calls
performDrag(). Sets the state to terminal.
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Specified by:
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commitDrag
in interface
DragTracker
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Overrides:
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commitDrag
in class
AbstractTool
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See Also:
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AbstractTool.commitDrag()
createOperationSet
protected java.util.List createOperationSet()
- Returns a List of top-level edit parts excluding dependants (by calling
ToolUtilities.getSelectionWithoutDependants(EditPartViewer) that understand the
current target request (by calling
ToolUtilities.filterEditPartsUnderstanding(List, Request).
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Overrides:
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createOperationSet
in class
AbstractTool
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Returns:
- a list of editparts being operated on
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See Also:
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AbstractTool.createOperationSet()
createTargetRequest
protected
Request createTargetRequest()
- Creates a
ChangeBoundsRequest. By default, the type is
RequestConstants.REQ_MOVE. Later on when the edit parts are asked to
contribute to the overall command, the request type will be either
RequestConstants.REQ_MOVE or
RequestConstants.REQ_ORPHAN, depending on
the result of
isMove().
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Overrides:
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createTargetRequest
in class
TargetingTool
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Returns:
- the new target request
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See Also:
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TargetingTool.createTargetRequest()
deactivate
public void deactivate()
- Erases source feedback and sets the autoexpose helper to
null.
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Specified by:
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deactivate
in interface
Tool
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Overrides:
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deactivate
in class
TargetingTool
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See Also:
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Tool.deactivate()
eraseSourceFeedback
protected void eraseSourceFeedback()
- Asks the edit parts in the
operation set to
erase their source feedback.
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getCommand
protected
Command getCommand()
- Asks each edit part in the
operation set to
contribute to a
CompoundCommand after first setting the request type to either
RequestConstants.REQ_MOVE or
RequestConstants.REQ_ORPHAN, depending on
the result of
isMove().
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Overrides:
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getCommand
in class
TargetingTool
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See Also:
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AbstractTool.getCommand()
getCommandName
protected java.lang.String getCommandName()
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Description copied from class:
AbstractTool
- Returns the identifier of the command that is being sought. This name is also the
named that will be logged in the debug view.
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Overrides:
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getCommandName
in class
SelectEditPartTracker
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See Also:
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AbstractTool.getCommandName()
getDebugName
protected java.lang.String getDebugName()
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Description copied from class:
AbstractTool
- Returns the debug name for this tool.
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Overrides:
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getDebugName
in class
SelectEditPartTracker
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See Also:
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AbstractTool.getDebugName()
getExclusionSet
protected java.util.Collection getExclusionSet()
- Returns a list of all the edit parts in the
operation set, plus the
ConnectionLayer.
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Overrides:
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getExclusionSet
in class
TargetingTool
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Returns:
- the list of objects to be excluded as targets
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See Also:
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TargetingTool.getExclusionSet()
handleAutoexpose
protected void handleAutoexpose()
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Description copied from class:
TargetingTool
- This method is called whenever an autoexpose occurs. When an autoexpose occurs, it is
possible that everything in the viewer has moved a little. Therefore, by default,
handleMove() is called to simulate the mouse moving
even though it didn't.
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Overrides:
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handleAutoexpose
in class
TargetingTool
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See Also:
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TargetingTool.handleAutoexpose()
handleButtonUp
protected boolean handleButtonUp(int button)
- Erases feedback and calls
performDrag().
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Overrides:
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handleButtonUp
in class
SelectEditPartTracker
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See Also:
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AbstractTool.handleButtonUp(int)
handleDragInProgress
protected boolean handleDragInProgress()
- Updates the target request and mouse target, asks to show feedback, and sets the
current command.
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Overrides:
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handleDragInProgress
in class
AbstractTool
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Returns:
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true if the drag was handled -
See Also:
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AbstractTool.handleDragInProgress()
handleHover
protected boolean handleHover()
- Calls
TargetingTool.updateAutoexposeHelper() if a drag is in progress.
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Overrides:
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handleHover
in class
AbstractTool
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Returns:
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true if the hover was handled -
See Also:
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AbstractTool.handleHover()
handleInvalidInput
protected boolean handleInvalidInput()
- Erases source feedback.
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Overrides:
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handleInvalidInput
in class
TargetingTool
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Returns:
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true
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See Also:
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TargetingTool.handleInvalidInput()
handleKeyDown
protected boolean handleKeyDown(KeyEvent e)
- Processes arrow keys used to move edit parts.
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Overrides:
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handleKeyDown
in class
AbstractTool
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Parameters:
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e - the key event
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Returns:
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true if the key down was handled. -
See Also:
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org.eclipse.gef.tools.AbstractTool#handleKeyDown(org.eclipse.swt.events.KeyEvent)
handleKeyUp
protected boolean handleKeyUp(KeyEvent e)
- Interprets and processes clone deactivation, constrained move deactivation, and
accessibility navigation reset.
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Overrides:
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handleKeyUp
in class
AbstractTool
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Parameters:
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e - the key event
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Returns:
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true if the event was handled -
See Also:
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org.eclipse.gef.tools.AbstractTool#handleKeyUp(org.eclipse.swt.events.KeyEvent)
isCloneActive
protected boolean isCloneActive()
- Returns true if the current drag is a clone operation.
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Returns:
- true if cloning is enabled and is currently active.
isMove
protected boolean isMove()
- Returns
true if the source edit part is being moved within its parent. If
the source edit part is being moved to another parent, this returns false.
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Returns:
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true if the source edit part is not being reparented
performDrag
protected void performDrag()
- Calls
AbstractTool.executeCurrentCommand().
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repairStartLocation
protected void repairStartLocation()
- If auto scroll (also called auto expose) is being performed, the start location moves
during the scroll. This method updates that location.
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setAutoexposeHelper
protected void setAutoexposeHelper(
AutoexposeHelper helper)
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Description copied from class:
TargetingTool
- Sets the active autoexpose helper to the given helper, or
null. If the
helper is not null, a runnable is queued on the event thread that will
trigger a subsequent
TargetingTool.doAutoexpose(). The helper is typically updated only on
a hover event.
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Overrides:
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setAutoexposeHelper
in class
TargetingTool
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Parameters:
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helper - the new autoexpose helper or null
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See Also:
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TargetingTool.setAutoexposeHelper(org.eclipse.gef.AutoexposeHelper)
setCloneActive
protected void setCloneActive(boolean cloneActive)
- Enables cloning if the value is true.
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Parameters:
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cloneActive - true if cloning should be active
setTargetEditPart
protected void setTargetEditPart(
EditPart editpart)
- Extended to update the current snap-to strategy.
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Overrides:
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setTargetEditPart
in class
TargetingTool
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Parameters:
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editpart - the new target -
See Also:
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TargetingTool.setTargetEditPart(org.eclipse.gef.EditPart)
showSourceFeedback
protected void showSourceFeedback()
- Asks the edit parts in the
operation set to
show source feedback.
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setState
protected void setState(int state)
- Extended to activate cloning and to update the captured source dimensions when
applicable.
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Overrides:
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setState
in class
AbstractTool
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Parameters:
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state - the new state -
See Also:
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AbstractTool.setState(int)
updateTargetRequest
protected void updateTargetRequest()
- Calls
repairStartLocation() in case auto scroll is being performed. Updates
the request with the current
operation set,
move delta, location and type.
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Overrides:
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updateTargetRequest
in class
TargetingTool
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See Also:
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TargetingTool.updateTargetRequest()
snapPoint
protected void snapPoint(
ChangeBoundsRequest request)
- This method can be overridden by clients to customize the snapping
behavior.
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Parameters:
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request - the ChangeBoundsRequest from which the move
delta can be extracted and updated -
Since:
- 3.4
Copyright (c) IBM Corp. and others 2000, 2007. All Rights Reserved.
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