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.
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Field Summary
Fields declared in class java.awt.dnd.DragGestureRecognizer
component, dragGestureListener, dragSource, events, sourceActions -
Constructor Summary
ConstructorsModifierConstructorDescriptionprotectedConstruct a newMouseDragGestureRecognizergiven theDragSourcefor theComponent.protectedConstruct a newMouseDragGestureRecognizergiven theDragSourcefor theComponentc, and theComponentto observe.protectedMouseDragGestureRecognizer(DragSource ds, Component c, int act) Construct a newMouseDragGestureRecognizergiven theDragSourcefor theComponentc, theComponentto observe, and the action(s) permitted for this drag operation.protectedMouseDragGestureRecognizer(DragSource ds, Component c, int act, DragGestureListener dgl) Construct a newMouseDragGestureRecognizergiven theDragSourcefor theComponentc, theComponentto observe, the action(s) permitted for this drag operation, and theDragGestureListenerto notify when a drag gesture is detected. -
Method Summary
Modifier and TypeMethodDescriptionvoidInvoked when the mouse has been clicked on a component.voidInvoked when a mouse button is pressed on a component.voidInvoked when the mouse enters a component.voidInvoked when the mouse exits a component.voidInvoked when the mouse button has been moved on a component (with no buttons no down).voidInvoked when a mouse button has been pressed on aComponent.voidInvoked when a mouse button has been released on a component.protected voidregister this DragGestureRecognizer's Listeners with the Componentprotected voidunregister this DragGestureRecognizer's Listeners with the Component subclasses must override this methodMethods declared in class java.awt.dnd.DragGestureRecognizer
addDragGestureListener, appendEvent, fireDragGestureRecognized, getComponent, getDragSource, getSourceActions, getTriggerEvent, removeDragGestureListener, resetRecognizer, setComponent, setSourceActions
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Constructor Details
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MouseDragGestureRecognizer
Construct a newMouseDragGestureRecognizergiven theDragSourcefor theComponentc, theComponentto observe, the action(s) permitted for this drag operation, and theDragGestureListenerto notify when a drag gesture is detected.- Parameters:
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
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MouseDragGestureRecognizer
Construct a newMouseDragGestureRecognizergiven theDragSourcefor theComponentc, theComponentto observe, and the action(s) permitted for this drag operation.- Parameters:
ds- The DragSource for the Component cc- The Component to observeact- The actions permitted for this drag
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MouseDragGestureRecognizer
Construct a newMouseDragGestureRecognizergiven theDragSourcefor theComponentc, and theComponentto observe.- Parameters:
ds- The DragSource for the Component cc- The Component to observe
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MouseDragGestureRecognizer
Construct a newMouseDragGestureRecognizergiven theDragSourcefor theComponent.- Parameters:
ds- The DragSource for the Component
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Method Details
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registerListeners
protected void registerListeners()register this DragGestureRecognizer's Listeners with the Component- Specified by:
registerListenersin classDragGestureRecognizer
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unregisterListeners
protected void unregisterListeners()unregister this DragGestureRecognizer's Listeners with the Component subclasses must override this method- Specified by:
unregisterListenersin classDragGestureRecognizer
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mouseClicked
Invoked when the mouse has been clicked on a component.- Specified by:
mouseClickedin interfaceMouseListener- Parameters:
e- theMouseEvent
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mousePressed
Invoked when a mouse button has been pressed on aComponent.- Specified by:
mousePressedin interfaceMouseListener- Parameters:
e- theMouseEvent
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mouseReleased
Invoked when a mouse button has been released on a component.- Specified by:
mouseReleasedin interfaceMouseListener- Parameters:
e- theMouseEvent
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mouseEntered
Invoked when the mouse enters a component.- Specified by:
mouseEnteredin interfaceMouseListener- Parameters:
e- theMouseEvent
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mouseExited
Invoked when the mouse exits a component.- Specified by:
mouseExitedin interfaceMouseListener- Parameters:
e- theMouseEvent
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mouseDragged
Invoked when a mouse button is pressed on a component.- Specified by:
mouseDraggedin interfaceMouseMotionListener- Parameters:
e- theMouseEvent
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mouseMoved
Invoked when the mouse button has been moved on a component (with no buttons no down).- Specified by:
mouseMovedin interfaceMouseMotionListener- Parameters:
e- theMouseEvent
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