Class MouseDragGestureRecognizer
- java.lang.Object
-
- java.awt.dnd.DragGestureRecognizer
-
- java.awt.dnd.MouseDragGestureRecognizer
- All Implemented Interfaces:
-
MouseListener
,MouseMotionListener
,Serializable
,EventListener
public abstract class MouseDragGestureRecognizer extends DragGestureRecognizer implements MouseListener, MouseMotionListener
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.
- See Also:
-
DragGestureListener
,DragGestureEvent
,DragSource
, Serialized Form
Field Summary
Fields declared in class java.awt.dnd.DragGestureRecognizer
component, dragGestureListener, dragSource, events, sourceActions
Constructor Summary
Modifier | Constructor | Description |
---|---|---|
protected | MouseDragGestureRecognizer(DragSource ds) | Construct a new |
protected | MouseDragGestureRecognizer(DragSource ds,
Component c) | Construct a new |
protected | MouseDragGestureRecognizer(DragSource ds,
Component c,
int act) | Construct a new |
protected | MouseDragGestureRecognizer(DragSource ds,
Component c,
int act,
DragGestureListener dgl) | Construct a new |
Method Summary
Modifier and Type | Method | Description |
---|---|---|
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 |
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 declared in class java.awt.dnd.DragGestureRecognizer
addDragGestureListener, appendEvent, fireDragGestureRecognized, getComponent, getDragSource, getSourceActions, getTriggerEvent, removeDragGestureListener, resetRecognizer, setComponent, setSourceActions
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Constructor Detail
MouseDragGestureRecognizer
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.
- Parameters:
-
ds
- The DragSource for the Component c -
c
- The Component to observe -
act
- The actions permitted for this Drag -
dgl
- The DragGestureListener to notify when a gesture is detected
MouseDragGestureRecognizer
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.
- Parameters:
-
ds
- The DragSource for the Component c -
c
- The Component to observe -
act
- The actions permitted for this drag
MouseDragGestureRecognizer
protected MouseDragGestureRecognizer(DragSource ds, Component c)
Construct a new MouseDragGestureRecognizer
given the DragSource
for the Component
c, and the Component
to observe.
- Parameters:
-
ds
- The DragSource for the Component c -
c
- The Component to observe
MouseDragGestureRecognizer
protected MouseDragGestureRecognizer(DragSource ds)
Construct a new MouseDragGestureRecognizer
given the DragSource
for the Component
.
- Parameters:
-
ds
- The DragSource for the Component
Method Detail
registerListeners
protected void registerListeners()
register this DragGestureRecognizer's Listeners with the Component
- Specified by:
-
registerListeners
in classDragGestureRecognizer
unregisterListeners
protected void unregisterListeners()
unregister this DragGestureRecognizer's Listeners with the Component subclasses must override this method
- Specified by:
-
unregisterListeners
in classDragGestureRecognizer
mouseClicked
public void mouseClicked(MouseEvent e)
Invoked when the mouse has been clicked on a component.
- Specified by:
-
mouseClicked
in interfaceMouseListener
- Parameters:
-
e
- theMouseEvent
mousePressed
public void mousePressed(MouseEvent e)
Invoked when a mouse button has been pressed on a Component
.
- Specified by:
-
mousePressed
in interfaceMouseListener
- Parameters:
-
e
- theMouseEvent
mouseReleased
public void mouseReleased(MouseEvent e)
Invoked when a mouse button has been released on a component.
- Specified by:
-
mouseReleased
in interfaceMouseListener
- Parameters:
-
e
- theMouseEvent
mouseEntered
public void mouseEntered(MouseEvent e)
Invoked when the mouse enters a component.
- Specified by:
-
mouseEntered
in interfaceMouseListener
- Parameters:
-
e
- theMouseEvent
mouseExited
public void mouseExited(MouseEvent e)
Invoked when the mouse exits a component.
- Specified by:
-
mouseExited
in interfaceMouseListener
- Parameters:
-
e
- theMouseEvent
mouseDragged
public void mouseDragged(MouseEvent e)
Invoked when a mouse button is pressed on a component.
- Specified by:
-
mouseDragged
in interfaceMouseMotionListener
- Parameters:
-
e
- theMouseEvent
mouseMoved
public void mouseMoved(MouseEvent e)
Invoked when the mouse button has been moved on a component (with no buttons no down).
- Specified by:
-
mouseMoved
in interfaceMouseMotionListener
- Parameters:
-
e
- theMouseEvent