public abstract class SimpleDragTracker extends AbstractTool implements DragTracker
AbstractTool.Input| Modifier and Type | Field and Description |
|---|---|
protected static int |
MAX_FLAG
The maximum bit-mask used as a flag constant.
|
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_TERMINALREQ_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| Modifier | Constructor and Description |
|---|---|
protected |
SimpleDragTracker()
Null constructor.
|
| Modifier and Type | Method and Description |
|---|---|
protected Cursor |
calculateCursor()
Returns the appropriate cursor for the tools current state.
|
void |
commitDrag()
Added for compatibility.
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protected Request |
createSourceRequest()
Creates and returns a new Request that is used during the drag.
|
void |
deactivate()
Deactivates the tool.
|
protected void |
eraseSourceFeedback()
Show the source drag feedback for the drag occurring within the viewer.
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protected Request |
getSourceRequest()
Returns the request for the source of the drag, creating it if necessary.
|
protected boolean |
handleButtonDown(int button)
Looks for button 1, and goes into the drag state.
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protected boolean |
handleButtonUp(int button)
If dragging is in progress, cleans up feedback and calls performDrag().
|
protected boolean |
handleDragInProgress()
Called whenever a mouse is being dragged and the drag threshold has been
exceeded.
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protected boolean |
handleDragStarted()
Transitions Drag to Drag in progress state.
|
protected boolean |
handleInvalidInput()
Called when the mouse and/or keyboard input is invalid.
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protected boolean |
handleKeyDown(KeyEvent e)
Looks for keys which are used during accessible drags.
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protected boolean |
handleKeyUp(KeyEvent e)
Handles high-level processing of a key up event.
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protected boolean |
isShowingFeedback()
Returns
true if feedback is being shown. |
protected void |
performDrag()
Called once the drag has been interpreted.
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protected void |
showSourceFeedback()
Show the source drag feedback for the drag occurring within the viewer.
|
protected void |
updateSourceRequest()
Updates the source request.
|
acceptArrowKey, activate, addFeedback, applyProperty, createOperationSet, debug, executeCommand, executeCurrentCommand, focusGained, focusLost, getCommand, getCommandName, getCurrentCommand, getCurrentInput, getCurrentViewer, getDebugName, getDebugNameForState, getDefaultCursor, 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, viewerExitedgetFlag, setFlagclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitactivate, focusGained, focusLost, keyDown, keyTraversed, keyUp, mouseDoubleClick, mouseDown, mouseDrag, mouseHover, mouseMove, mouseUp, mouseWheelScrolled, nativeDragFinished, nativeDragStarted, setEditDomain, setProperties, setViewer, viewerEntered, viewerExitedprotected static final int MAX_FLAG
protected Cursor calculateCursor()
AbstractToolnull is returned. Otherwise,
either the default or disabled cursor is returned, based on the existence
of a current command, and whether that current command is executable.
Subclasses may override or extend this method to calculate the appropriate cursor based on other conditions.
calculateCursor in class AbstractToolnull or a cursor to be displayed.AbstractTool.calculateCursor()public void commitDrag()
AbstractToolDragTracker.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 the DragTracker interface.commitDrag in interface DragTrackercommitDrag in class AbstractToolDragTracker.commitDrag()protected Request createSourceRequest()
public void deactivate()
AbstractTooldeactivate in interface Tooldeactivate in class AbstractToolTool.deactivate()protected void eraseSourceFeedback()
protected Request getSourceRequest()
protected boolean handleButtonDown(int button)
handleButtonDown in class AbstractToolbutton - which button went downtrue if the buttonDown was handledAbstractTool.handleButtonDown(int)protected boolean handleButtonUp(int button)
handleButtonUp in class AbstractToolbutton - the button being releasedtrue if the button up was handledAbstractTool.handleButtonUp(int)protected boolean handleDragInProgress()
AbstractToolAbstractTool.handleDrag() is called. This method gets called repeatedly for
every mouse move during the drag. By default, nothing happens and
false is returned. Subclasses may override this method to
interpret the drag. Returning true indicates that the drag
was handled.handleDragInProgress in class AbstractTooltrue if the drag was handledAbstractTool.handleDragInProgress()protected boolean handleDragStarted()
handleDragStarted in class AbstractToolAbstractTool.handleDragStarted()protected boolean handleInvalidInput()
handleInvalidInput in class AbstractTooltrueprotected boolean handleKeyDown(KeyEvent e)
handleKeyDown in class AbstractToole - the key eventtrue if the key down was handled.AbstractTool.handleKeyDown(org.eclipse.swt.events.KeyEvent)protected boolean handleKeyUp(KeyEvent e)
AbstractToolfalse. Subclasses may extend this method to
process key up events. Returns true if the key up was
processed in some way.handleKeyUp in class AbstractToole - the key eventtrue if the event was handledAbstractTool.handleKeyUp(org.eclipse.swt.events.KeyEvent)protected boolean isShowingFeedback()
true if feedback is being shown.true if feedback is showingprotected void performDrag()
protected void showSourceFeedback()
protected void updateSourceRequest()
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