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Java™ Platform Standard Ed. 6 |
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java.lang.Objectjava.awt.dnd.DragGestureRecognizer
java.awt.dnd.MouseDragGestureRecognizer
public abstract class MouseDragGestureRecognizer
This abstract subclass of DragGestureRecognizer
defines a DragGestureRecognizer
for mouse-based gestures.
Each platform implements its own concrete subclass of this class,
available via the Toolkit.createDragGestureRecognizer() method,
to encapsulate
the recognition of the platform dependent mouse gesture(s) that initiate
a Drag and Drop operation.
Mouse drag gesture recognizers should honor the
drag gesture motion threshold, available through
DragSource.getDragThreshold().
A drag gesture should be recognized only when the distance
in either the horizontal or vertical direction between
the location of the latest mouse dragged event and the
location of the corresponding mouse button pressed event
is greater than the drag gesture motion threshold.
Drag gesture recognizers created with
DragSource.createDefaultDragGestureRecognizer(java.awt.Component, int, java.awt.dnd.DragGestureListener)
follow this convention.
DragGestureListener,
DragGestureEvent,
DragSource,
Serialized Form| Field Summary |
|---|
| Fields inherited from class java.awt.dnd.DragGestureRecognizer |
|---|
component, dragGestureListener, dragSource, events, sourceActions |
| Constructor Summary | |
|---|---|
protected |
MouseDragGestureRecognizer(DragSource ds)
Construct a new MouseDragGestureRecognizer
given the DragSource for the Component. |
protected |
MouseDragGestureRecognizer(DragSource ds,
Component c)
Construct a new MouseDragGestureRecognizer
given the DragSource for the
Component c, and the
Component to observe. |
protected |
MouseDragGestureRecognizer(DragSource ds,
Component c,
int act)
Construct a new MouseDragGestureRecognizer
given the DragSource for
the Component c,
the Component to observe, and the action(s)
permitted for this drag operation. |
protected |
MouseDragGestureRecognizer(DragSource ds,
Component c,
int act,
DragGestureListener dgl)
Construct a new MouseDragGestureRecognizer
given the DragSource for the
Component c, the Component
to observe, the action(s)
permitted for this drag operation, and
the DragGestureListener to
notify when a drag gesture is detected. |
| Method Summary | |
|---|---|
void |
mouseClicked(MouseEvent e)
Invoked when the mouse has been clicked on a component. |
void |
mouseDragged(MouseEvent e)
Invoked when a mouse button is pressed on a component. |
void |
mouseEntered(MouseEvent e)
Invoked when the mouse enters a component. |
void |
mouseExited(MouseEvent e)
Invoked when the mouse exits a component. |
void |
mouseMoved(MouseEvent e)
Invoked when the mouse button has been moved on a component (with no buttons no down). |
void |
mousePressed(MouseEvent e)
Invoked when a mouse button has been pressed on a Component. |
void |
mouseReleased(MouseEvent e)
Invoked when a mouse button has been released on a component. |
protected void |
registerListeners()
register this DragGestureRecognizer's Listeners with the Component |
protected void |
unregisterListeners()
unregister this DragGestureRecognizer's Listeners with the Component subclasses must override this method |
| Methods inherited from class java.awt.dnd.DragGestureRecognizer |
|---|
addDragGestureListener, appendEvent, fireDragGestureRecognized, getComponent, getDragSource, getSourceActions, getTriggerEvent, removeDragGestureListener, resetRecognizer, setComponent, setSourceActions |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
protected MouseDragGestureRecognizer(DragSource ds,
Component c,
int act,
DragGestureListener dgl)
MouseDragGestureRecognizer
given the DragSource for the
Component c, the Component
to observe, the action(s)
permitted for this drag operation, and
the DragGestureListener to
notify when a drag gesture is detected.
ds - The DragSource for the Component cc - The Component to observeact - The actions permitted for this Dragdgl - The DragGestureListener to notify when a gesture is detected
protected MouseDragGestureRecognizer(DragSource ds,
Component c,
int act)
MouseDragGestureRecognizer
given the DragSource for
the Component c,
the Component to observe, and the action(s)
permitted for this drag operation.
ds - The DragSource for the Component cc - The Component to observeact - The actions permitted for this drag
protected MouseDragGestureRecognizer(DragSource ds,
Component c)
MouseDragGestureRecognizer
given the DragSource for the
Component c, and the
Component to observe.
ds - The DragSource for the Component cc - The Component to observeprotected MouseDragGestureRecognizer(DragSource ds)
MouseDragGestureRecognizer
given the DragSource for the Component.
ds - The DragSource for the Component| Method Detail |
|---|
protected void registerListeners()
registerListeners in class DragGestureRecognizerprotected void unregisterListeners()
unregisterListeners in class DragGestureRecognizerpublic void mouseClicked(MouseEvent e)
mouseClicked in interface MouseListenere - the MouseEventpublic void mousePressed(MouseEvent e)
Component.
mousePressed in interface MouseListenere - the MouseEventpublic void mouseReleased(MouseEvent e)
mouseReleased in interface MouseListenere - the MouseEventpublic void mouseEntered(MouseEvent e)
mouseEntered in interface MouseListenere - the MouseEventpublic void mouseExited(MouseEvent e)
mouseExited in interface MouseListenere - the MouseEventpublic void mouseDragged(MouseEvent e)
mouseDragged in interface MouseMotionListenere - the MouseEventpublic void mouseMoved(MouseEvent e)
mouseMoved in interface MouseMotionListenere - the MouseEvent
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Java™ Platform Standard Ed. 6 |
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