Package org.eclipse.gef.tools
Class ResizeTracker
java.lang.Object
org.eclipse.gef.util.FlagSupport
org.eclipse.gef.tools.AbstractTool
org.eclipse.gef.tools.SimpleDragTracker
org.eclipse.gef.tools.ResizeTracker
- All Implemented Interfaces:
- DragTracker,- RequestConstants,- Tool
A Tracker for dragging a resize handle. The ResizeTracker will resize all of
 the selected editparts in the viewer which understand a RESIZE request. A
 
ChangeBoundsRequest is sent to each member of the operation set. The
 tracker allows for the resize direction to be specified in the constructor.- 
Nested Class SummaryNested classes/interfaces inherited from class org.eclipse.gef.tools.AbstractToolAbstractTool.Input
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Field SummaryFieldsModifier and TypeFieldDescriptionprotected static final intThe maximum flag used by this class.Fields inherited from class org.eclipse.gef.tools.AbstractToolMAX_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_TERMINALFields inherited from interface org.eclipse.gef.RequestConstantsREQ_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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Constructor SummaryConstructorsConstructorDescriptionResizeTracker(int direction) Deprecated.use ResizeTracker(GraphicalEditPart, int) insteadResizeTracker(GraphicalEditPart owner, int direction) Constructs a resize tracker that resizes in the specified direction.
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Method SummaryModifier and TypeMethodDescriptionvoidactivate()Activates the tool.voidAdded for compatibility.Returns all selected parts which understand resizing.protected RequestCreates and returns a new Request that is used during the drag.voidDeactivates the tool.protected voidenforceConstraintsForResize(ChangeBoundsRequest changeBoundsRequest) Ensures size constraints (by default minimum and maximum) are respected by the given request.protected voidenforceResizeConstraintsForBottomRightCorner(ChangeBoundsRequest changeBoundsRequest) Ensures that the in addition to the size constraints also the position is respected by the given request.protected voidThis method is invoked when the resize operation is complete.protected CommandReturns a new, updated command based on the tool's current properties.protected StringReturns the identifier of the command that is being sought.protected StringReturns the debug name for this tool.protected CursorReturns the cursor used under normal conditions.protected DimensiongetMaximumSizeFor(ChangeBoundsRequest request) Determines the maximum size that the host can be resized to for a given request.protected DimensiongetMinimumSizeFor(ChangeBoundsRequest request) Determines the minimum size that the specified child can be resized to.By default, a default value is returned.protected GraphicalEditPartgetOwner()Returns the owner of this resize tracker.protected intReturns the direction of the resize (NORTH, EAST, NORTH_EAST, etc.).protected GraphicalEditPartThe TargetEditPart is the parent of the EditPart being resized.protected booleanhandleButtonUp(int button) If dragging is in progress, cleans up feedback and calls performDrag().protected booleanUpdates the command and the source request, and shows feedback.protected voidThis method is invoked as the drag is happening.protected voidUpdates the source request.Methods inherited from class org.eclipse.gef.tools.SimpleDragTrackercalculateCursor, eraseSourceFeedback, getSourceRequest, handleButtonDown, handleDragStarted, handleInvalidInput, handleKeyDown, handleKeyUp, isShowingFeedback, performDrag, showSourceFeedbackMethods inherited from class org.eclipse.gef.tools.AbstractToolacceptArrowKey, accGetStep, accStepIncrement, accStepReset, addFeedback, applyProperty, debug, executeCommand, executeCurrentCommand, focusGained, focusLost, getCurrentCommand, getCurrentInput, getCurrentViewer, getDebugNameForState, getDisabledCursor, getDomain, getDragMoveDelta, getLocation, getOperationSet, getStartLocation, getState, handleCommandStackChanged, handleDoubleClick, handleDrag, handleFinished, handleFocusGained, handleFocusLost, handleHover, handleKeyTraversed, handleMove, handleNativeDragFinished, handleNativeDragStarted, handleViewerEntered, handleViewerExited, isActive, isHoverActive, isInState, isViewerImportant, keyDown, keyTraversed, keyUp, mouseDoubleClick, mouseDown, mouseDrag, mouseHover, mouseMove, mouseUp, mouseWheelScrolled, movedPastThreshold, nativeDragFinished, nativeDragStarted, performViewerMouseWheel, placeMouseInViewer, reactivate, refreshCursor, releaseToolCapture, removeFeedback, resetFlags, setCurrentCommand, setCursor, setDefaultCursor, setDisabledCursor, setEditDomain, setHoverActive, setProperties, setStartLocation, setState, setToolCapture, setUnloadWhenFinished, setViewer, stateTransition, unloadWhenFinished, viewerEntered, viewerExitedMethods inherited from class org.eclipse.gef.util.FlagSupportgetFlag, setFlagMethods inherited from class java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods inherited from interface org.eclipse.gef.ToolfocusGained, focusLost, keyDown, keyTraversed, keyUp, mouseDoubleClick, mouseDown, mouseDrag, mouseHover, mouseMove, mouseUp, mouseWheelScrolled, nativeDragFinished, nativeDragStarted, setEditDomain, setProperties, setViewer, viewerEntered, viewerExited
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Field Details- 
MAX_FLAGprotected static final int MAX_FLAGThe maximum flag used by this class.
 
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Constructor Details- 
ResizeTrackerDeprecated.use ResizeTracker(GraphicalEditPart, int) insteadConstructs a resize tracker that resizes in the specified direction. The direction is specified usingPositionConstants.NORTH,PositionConstants.NORTH_EAST, etc.- Parameters:
- direction- the direction
 
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ResizeTrackerConstructs a resize tracker that resizes in the specified direction. The direction is specified usingPositionConstants.NORTH,PositionConstants.NORTH_EAST, etc.- Parameters:
- owner- of the resize handle which returned this tracker
- direction- the direction
 
 
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Method Details- 
activatepublic void activate()Description copied from class:AbstractToolActivates the tool. Any initialization should be performed here. This method is called when a tool is selected.- Specified by:
- activatein interface- Tool
- Overrides:
- activatein class- AbstractTool
- See Also:
 
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commitDragpublic void commitDrag()Description copied from class:AbstractToolAdded for compatibility.DragTracker.commitDrag()was added for accessibility reasons. Since all tool implementations must inherit from this base class, then implementing this method here avoids breaking subclasses that implemented theDragTrackerinterface.- Specified by:
- commitDragin interface- DragTracker
- Overrides:
- commitDragin class- SimpleDragTracker
- See Also:
 
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createOperationSetReturns all selected parts which understand resizing.- Overrides:
- createOperationSetin class- AbstractTool
- Returns:
- a list of editparts being operated on
- See Also:
 
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createSourceRequestDescription copied from class:SimpleDragTrackerCreates and returns a new Request that is used during the drag.- Overrides:
- createSourceRequestin class- SimpleDragTracker
- Returns:
- a new source request
- See Also:
 
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deactivatepublic void deactivate()Description copied from class:AbstractToolDeactivates the tool. This method is called whenever the user switches to another tool. Use this method to do some clean-up when the tool is switched. The abstract tool allows cursors for viewers to be changed. When the tool is deactivated it must revert to normal the cursor of the last tool it changed.- Specified by:
- deactivatein interface- Tool
- Overrides:
- deactivatein class- SimpleDragTracker
- See Also:
 
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eraseTargetFeedbackprotected void eraseTargetFeedback()This method is invoked when the resize operation is complete. It notifies thetargetto erase target feedback.
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getCommandDescription copied from class:AbstractToolReturns a new, updated command based on the tool's current properties. The default implementation returns an unexecutable command. Some tools do not work commands and the model, but simply change the viewer's state in some way.- Overrides:
- getCommandin class- AbstractTool
- Returns:
- a newly obtained command
- See Also:
 
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getCommandNameDescription copied from class:AbstractToolReturns the identifier of the command that is being sought. This name is also the named that will be logged in the debug view.- Specified by:
- getCommandNamein class- AbstractTool
- Returns:
- the identifier for the command
- See Also:
 
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getDefaultCursorDescription copied from class:AbstractToolReturns the cursor used under normal conditions.- Overrides:
- getDefaultCursorin class- AbstractTool
- Returns:
- the default cursor
- See Also:
 
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getDebugNameDescription copied from class:AbstractToolReturns the debug name for this tool.- Overrides:
- getDebugNamein class- AbstractTool
- Returns:
- the debug name
- See Also:
 
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getOwnerReturns the owner of this resize tracker.- Since:
- 3.7
 
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getResizeDirectionprotected int getResizeDirection()Returns the direction of the resize (NORTH, EAST, NORTH_EAST, etc.). These constants are fromPositionConstants.- Returns:
- the resize direction.
 
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getTargetEditPartThe TargetEditPart is the parent of the EditPart being resized.- Returns:
- The target EditPart; may be nullin 2.1 applications that use the now deprecatedconstructor.
 
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handleButtonUpprotected boolean handleButtonUp(int button) If dragging is in progress, cleans up feedback and calls performDrag().- Overrides:
- handleButtonUpin class- SimpleDragTracker
- Parameters:
- button- the button being released
- Returns:
- trueif the button up was handled
- See Also:
 
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handleDragInProgressprotected boolean handleDragInProgress()Updates the command and the source request, and shows feedback.- Overrides:
- handleDragInProgressin class- SimpleDragTracker
- Returns:
- trueif the drag was handled
- See Also:
 
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showTargetFeedbackprotected void showTargetFeedback()This method is invoked as the drag is happening. It notifies thetargetto show target feedback.
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updateSourceRequestprotected void updateSourceRequest()Description copied from class:SimpleDragTrackerUpdates the source request.- Overrides:
- updateSourceRequestin class- SimpleDragTracker
- See Also:
 
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enforceConstraintsForResizeEnsures size constraints (by default minimum and maximum) are respected by the given request. May be overwritten by clients to enforce additional constraints.- Parameters:
- changeBoundsRequest- The request to validate
- Since:
- 3.7
 
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enforceResizeConstraintsForBottomRightCornerprotected void enforceResizeConstraintsForBottomRightCorner(ChangeBoundsRequest changeBoundsRequest) Ensures that the in addition to the size constraints also the position is respected by the given request. It ensure that on resize the bottom right corner is fixed when resized from any top/left direction. May be overwritten by clients to enforce additional constraints.- Parameters:
- changeBoundsRequest- The request to validate
- Since:
- 3.13
 
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getMaximumSizeForDetermines the maximum size that the host can be resized to for a given request. By default, a default value is returned. The value is interpreted to be a dimension in the host figure's coordinate system (i.e. relative to its bounds), so it is not affected by zooming affects.- Parameters:
- request- the ChangeBoundsRequest
- Returns:
- the minimum size
- Since:
- 3.7
 
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getMinimumSizeForDetermines the minimum size that the specified child can be resized to.By default, a default value is returned. The value is interpreted to be a dimension in the host figure's coordinate system (i.e. relative to its bounds), so it is not affected by zooming effects.- Parameters:
- request- the ChangeBoundsRequest
- Returns:
- the minimum size
- Since:
- 3.7
 
 
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