下面列出了怎么用java.awt.dnd.DragSourceDragEvent的API类实例代码及写法，或者点击链接到github查看源代码。
protected final void postDragSourceDragEvent(final int targetAction,
final int modifiers,
final int x, final int y,
final int dispatchType) {
final int dropAction =
SunDragSourceContextPeer.convertModifiersToDropAction(modifiers,
sourceActions);
DragSourceDragEvent event =
new DragSourceDragEvent(getDragSourceContext(),
dropAction,
targetAction & sourceActions,
modifiers, x, y);
EventDispatcher dispatcher = new EventDispatcher(dispatchType, event);
SunToolkit.invokeLaterOnAppContext(
SunToolkit.targetToAppContext(getComponent()), dispatcher);
startSecondaryEventLoop();
}
EventDispatcher(int dispatchType, DragSourceEvent event) {
switch (dispatchType) {
case DISPATCH_ENTER:
case DISPATCH_MOTION:
case DISPATCH_CHANGED:
case DISPATCH_MOUSE_MOVED:
if (!(event instanceof DragSourceDragEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
case DISPATCH_EXIT:
break;
case DISPATCH_FINISH:
if (!(event instanceof DragSourceDropEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
default:
throw new IllegalArgumentException("Dispatch type: " +
dispatchType);
}
this.dispatchType = dispatchType;
this.event = event;
}
protected final void postDragSourceDragEvent(final int targetAction,
final int modifiers,
final int x, final int y,
final int dispatchType) {
final int dropAction =
SunDragSourceContextPeer.convertModifiersToDropAction(modifiers,
sourceActions);
DragSourceDragEvent event =
new DragSourceDragEvent(getDragSourceContext(),
dropAction,
targetAction & sourceActions,
modifiers, x, y);
EventDispatcher dispatcher = new EventDispatcher(dispatchType, event);
SunToolkit.invokeLaterOnAppContext(
SunToolkit.targetToAppContext(getComponent()), dispatcher);
startSecondaryEventLoop();
}
EventDispatcher(int dispatchType, DragSourceEvent event) {
switch (dispatchType) {
case DISPATCH_ENTER:
case DISPATCH_MOTION:
case DISPATCH_CHANGED:
case DISPATCH_MOUSE_MOVED:
if (!(event instanceof DragSourceDragEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
case DISPATCH_EXIT:
break;
case DISPATCH_FINISH:
if (!(event instanceof DragSourceDropEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
default:
throw new IllegalArgumentException("Dispatch type: " +
dispatchType);
}
this.dispatchType = dispatchType;
this.event = event;
}
protected final void postDragSourceDragEvent(final int targetAction,
final int modifiers,
final int x, final int y,
final int dispatchType) {
final int dropAction =
SunDragSourceContextPeer.convertModifiersToDropAction(modifiers,
sourceActions);
DragSourceDragEvent event =
new DragSourceDragEvent(getDragSourceContext(),
dropAction,
targetAction & sourceActions,
modifiers, x, y);
EventDispatcher dispatcher = new EventDispatcher(dispatchType, event);
SunToolkit.invokeLaterOnAppContext(
SunToolkit.targetToAppContext(getComponent()), dispatcher);
startSecondaryEventLoop();
}
EventDispatcher(int dispatchType, DragSourceEvent event) {
switch (dispatchType) {
case DISPATCH_ENTER:
case DISPATCH_MOTION:
case DISPATCH_CHANGED:
case DISPATCH_MOUSE_MOVED:
if (!(event instanceof DragSourceDragEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
case DISPATCH_EXIT:
break;
case DISPATCH_FINISH:
if (!(event instanceof DragSourceDropEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
default:
throw new IllegalArgumentException("Dispatch type: " +
dispatchType);
}
this.dispatchType = dispatchType;
this.event = event;
}
EventDispatcher(int dispatchType, DragSourceEvent event) {
switch (dispatchType) {
case DISPATCH_ENTER:
case DISPATCH_MOTION:
case DISPATCH_CHANGED:
case DISPATCH_MOUSE_MOVED:
if (!(event instanceof DragSourceDragEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
case DISPATCH_EXIT:
break;
case DISPATCH_FINISH:
if (!(event instanceof DragSourceDropEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
default:
throw new IllegalArgumentException("Dispatch type: " +
dispatchType);
}
this.dispatchType = dispatchType;
this.event = event;
}
protected final void postDragSourceDragEvent(final int targetAction,
final int modifiers,
final int x, final int y,
final int dispatchType) {
final int dropAction =
SunDragSourceContextPeer.convertModifiersToDropAction(modifiers,
sourceActions);
DragSourceDragEvent event =
new DragSourceDragEvent(getDragSourceContext(),
dropAction,
targetAction & sourceActions,
modifiers, x, y);
EventDispatcher dispatcher = new EventDispatcher(dispatchType, event);
SunToolkit.invokeLaterOnAppContext(
SunToolkit.targetToAppContext(getComponent()), dispatcher);
startSecondaryEventLoop();
}
EventDispatcher(int dispatchType, DragSourceEvent event) {
switch (dispatchType) {
case DISPATCH_ENTER:
case DISPATCH_MOTION:
case DISPATCH_CHANGED:
case DISPATCH_MOUSE_MOVED:
if (!(event instanceof DragSourceDragEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
case DISPATCH_EXIT:
break;
case DISPATCH_FINISH:
if (!(event instanceof DragSourceDropEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
default:
throw new IllegalArgumentException("Dispatch type: " +
dispatchType);
}
this.dispatchType = dispatchType;
this.event = event;
}
protected final void postDragSourceDragEvent(final int targetAction,
final int modifiers,
final int x, final int y,
final int dispatchType) {
final int dropAction =
SunDragSourceContextPeer.convertModifiersToDropAction(modifiers,
sourceActions);
DragSourceDragEvent event =
new DragSourceDragEvent(getDragSourceContext(),
dropAction,
targetAction & sourceActions,
modifiers, x, y);
EventDispatcher dispatcher = new EventDispatcher(dispatchType, event);
SunToolkit.invokeLaterOnAppContext(
SunToolkit.targetToAppContext(getComponent()), dispatcher);
startSecondaryEventLoop();
}
EventDispatcher(int dispatchType, DragSourceEvent event) {
switch (dispatchType) {
case DISPATCH_ENTER:
case DISPATCH_MOTION:
case DISPATCH_CHANGED:
case DISPATCH_MOUSE_MOVED:
if (!(event instanceof DragSourceDragEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
case DISPATCH_EXIT:
break;
case DISPATCH_FINISH:
if (!(event instanceof DragSourceDropEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
default:
throw new IllegalArgumentException("Dispatch type: " +
dispatchType);
}
this.dispatchType = dispatchType;
this.event = event;
}
EventDispatcher(int dispatchType, DragSourceEvent event) {
switch (dispatchType) {
case DISPATCH_ENTER:
case DISPATCH_MOTION:
case DISPATCH_CHANGED:
case DISPATCH_MOUSE_MOVED:
if (!(event instanceof DragSourceDragEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
case DISPATCH_EXIT:
break;
case DISPATCH_FINISH:
if (!(event instanceof DragSourceDropEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
default:
throw new IllegalArgumentException("Dispatch type: " +
dispatchType);
}
this.dispatchType = dispatchType;
this.event = event;
}
@NotNull
@Override
protected Point calculateViewRelativeLocation ( @NotNull final WebDockableFrame frame, @NotNull final DragSourceDragEvent event )
{
final Point location = super.calculateViewRelativeLocation ( frame, event );
final WebDockablePane pane = frame.getDockablePane ();
if ( pane != null )
{
final Dimension size = pane.getModel ().getElement ( frame.getId () ).getSize ();
final Dimension current = frame.getSize ();
if ( current.width > size.width && Math.abs ( location.x ) > size.width )
{
location.x = location.x * size.width / current.width;
}
return location;
}
else
{
throw new DragException ( "Unable to drag frame that is not attached to a WebDockablePane: " + frame.getId () );
}
}
EventDispatcher(int dispatchType, DragSourceEvent event) {
switch (dispatchType) {
case DISPATCH_ENTER:
case DISPATCH_MOTION:
case DISPATCH_CHANGED:
case DISPATCH_MOUSE_MOVED:
if (!(event instanceof DragSourceDragEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
case DISPATCH_EXIT:
break;
case DISPATCH_FINISH:
if (!(event instanceof DragSourceDropEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
default:
throw new IllegalArgumentException("Dispatch type: " +
dispatchType);
}
this.dispatchType = dispatchType;
this.event = event;
}
EventDispatcher(int dispatchType, DragSourceEvent event) {
switch (dispatchType) {
case DISPATCH_ENTER:
case DISPATCH_MOTION:
case DISPATCH_CHANGED:
case DISPATCH_MOUSE_MOVED:
if (!(event instanceof DragSourceDragEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
case DISPATCH_EXIT:
break;
case DISPATCH_FINISH:
if (!(event instanceof DragSourceDropEvent)) {
throw new IllegalArgumentException("Event: " + event);
}
break;
default:
throw new IllegalArgumentException("Dispatch type: " +
dispatchType);
}
this.dispatchType = dispatchType;
this.event = event;
}
protected final void postDragSourceDragEvent(final int targetAction,
final int modifiers,
final int x, final int y,
final int dispatchType) {
final int dropAction =
SunDragSourceContextPeer.convertModifiersToDropAction(modifiers,
sourceActions);
DragSourceDragEvent event =
new DragSourceDragEvent(getDragSourceContext(),
dropAction,
targetAction & sourceActions,
modifiers, x, y);
EventDispatcher dispatcher = new EventDispatcher(dispatchType, event);
SunToolkit.invokeLaterOnAppContext(
SunToolkit.targetToAppContext(getComponent()), dispatcher);
startSecondaryEventLoop();
}
public void run() {
DragSourceContext dragSourceContext =
SunDragSourceContextPeer.this.getDragSourceContext();
try {
switch (dispatchType) {
case DISPATCH_ENTER:
dragSourceContext.dragEnter((DragSourceDragEvent)event);
break;
case DISPATCH_MOTION:
dragSourceContext.dragOver((DragSourceDragEvent)event);
break;
case DISPATCH_CHANGED:
dragSourceContext.dropActionChanged((DragSourceDragEvent)event);
break;
case DISPATCH_EXIT:
dragSourceContext.dragExit(event);
break;
case DISPATCH_MOUSE_MOVED:
dragSourceContext.dragMouseMoved((DragSourceDragEvent)event);
break;
case DISPATCH_FINISH:
try {
dragSourceContext.dragDropEnd((DragSourceDropEvent)event);
} finally {
SunDragSourceContextPeer.this.cleanup();
}
break;
default:
throw new IllegalStateException("Dispatch type: " +
dispatchType);
}
} finally {
SunDragSourceContextPeer.this.quitSecondaryEventLoop();
}
}
public void run() {
DragSourceContext dragSourceContext =
SunDragSourceContextPeer.this.getDragSourceContext();
try {
switch (dispatchType) {
case DISPATCH_ENTER:
dragSourceContext.dragEnter((DragSourceDragEvent)event);
break;
case DISPATCH_MOTION:
dragSourceContext.dragOver((DragSourceDragEvent)event);
break;
case DISPATCH_CHANGED:
dragSourceContext.dropActionChanged((DragSourceDragEvent)event);
break;
case DISPATCH_EXIT:
dragSourceContext.dragExit(event);
break;
case DISPATCH_MOUSE_MOVED:
dragSourceContext.dragMouseMoved((DragSourceDragEvent)event);
break;
case DISPATCH_FINISH:
try {
dragSourceContext.dragDropEnd((DragSourceDropEvent)event);
} finally {
SunDragSourceContextPeer.this.cleanup();
}
break;
default:
throw new IllegalStateException("Dispatch type: " +
dispatchType);
}
} finally {
SunDragSourceContextPeer.this.quitSecondaryEventLoop();
}
}
public void run() {
DragSourceContext dragSourceContext =
SunDragSourceContextPeer.this.getDragSourceContext();
try {
switch (dispatchType) {
case DISPATCH_ENTER:
dragSourceContext.dragEnter((DragSourceDragEvent)event);
break;
case DISPATCH_MOTION:
dragSourceContext.dragOver((DragSourceDragEvent)event);
break;
case DISPATCH_CHANGED:
dragSourceContext.dropActionChanged((DragSourceDragEvent)event);
break;
case DISPATCH_EXIT:
dragSourceContext.dragExit(event);
break;
case DISPATCH_MOUSE_MOVED:
dragSourceContext.dragMouseMoved((DragSourceDragEvent)event);
break;
case DISPATCH_FINISH:
try {
dragSourceContext.dragDropEnd((DragSourceDropEvent)event);
} finally {
SunDragSourceContextPeer.this.cleanup();
}
break;
default:
throw new IllegalStateException("Dispatch type: " +
dispatchType);
}
} finally {
SunDragSourceContextPeer.this.quitSecondaryEventLoop();
}
}
public void run() {
DragSourceContext dragSourceContext =
SunDragSourceContextPeer.this.getDragSourceContext();
try {
switch (dispatchType) {
case DISPATCH_ENTER:
dragSourceContext.dragEnter((DragSourceDragEvent)event);
break;
case DISPATCH_MOTION:
dragSourceContext.dragOver((DragSourceDragEvent)event);
break;
case DISPATCH_CHANGED:
dragSourceContext.dropActionChanged((DragSourceDragEvent)event);
break;
case DISPATCH_EXIT:
dragSourceContext.dragExit(event);
break;
case DISPATCH_MOUSE_MOVED:
dragSourceContext.dragMouseMoved((DragSourceDragEvent)event);
break;
case DISPATCH_FINISH:
try {
dragSourceContext.dragDropEnd((DragSourceDropEvent)event);
} finally {
SunDragSourceContextPeer.this.cleanup();
}
break;
default:
throw new IllegalStateException("Dispatch type: " +
dispatchType);
}
} finally {
SunDragSourceContextPeer.this.quitSecondaryEventLoop();
}
}
public void dragEnter(DragSourceDragEvent dsde) {
if ((dsde.getDropAction() & DnDConstants.ACTION_MOVE) == DnDConstants.ACTION_MOVE) {
dsde.getDragSourceContext().setCursor(DragSource.DefaultLinkDrop);
} else {
dsde.getDragSourceContext().setCursor(DragSource.DefaultLinkNoDrop);
}
}
public final void dragEnter(DragSourceDragEvent dsde) {
int action = dsde.getDropAction();
if (action == DnDConstants.ACTION_COPY) {
dsde.getDragSourceContext().setCursor(DragSource.DefaultCopyDrop);
}
else {
if (action == DnDConstants.ACTION_MOVE) {
dsde.getDragSourceContext().setCursor(DragSource.DefaultMoveDrop);
}
else {
dsde.getDragSourceContext().setCursor(DragSource.DefaultMoveNoDrop);
}
}
}
public void run() {
DragSourceContext dragSourceContext =
SunDragSourceContextPeer.this.getDragSourceContext();
try {
switch (dispatchType) {
case DISPATCH_ENTER:
dragSourceContext.dragEnter((DragSourceDragEvent)event);
break;
case DISPATCH_MOTION:
dragSourceContext.dragOver((DragSourceDragEvent)event);
break;
case DISPATCH_CHANGED:
dragSourceContext.dropActionChanged((DragSourceDragEvent)event);
break;
case DISPATCH_EXIT:
dragSourceContext.dragExit(event);
break;
case DISPATCH_MOUSE_MOVED:
dragSourceContext.dragMouseMoved((DragSourceDragEvent)event);
break;
case DISPATCH_FINISH:
try {
dragSourceContext.dragDropEnd((DragSourceDropEvent)event);
} finally {
SunDragSourceContextPeer.this.cleanup();
}
break;
default:
throw new IllegalStateException("Dispatch type: " +
dispatchType);
}
} finally {
SunDragSourceContextPeer.this.quitSecondaryEventLoop();
}
}
@Override
public void started ( @NotNull final DragSourceDragEvent event )
{
/**
* No extra updates required on this event.
*/
}
private void setCursor(DragSourceDragEvent dsde) {
int action = dsde.getDropAction();
// @todo ACTION_NONE must be removed : but somehow no action is
// passed here for ACTION_COPY
if ((action == DnDConstants.ACTION_COPY) || (action == DnDConstants.ACTION_NONE)) {
// if (action == DnDConstants.ACTION_COPY) {
dsde.getDragSourceContext().setCursor(DragSource.DefaultCopyDrop);
} else {
if (action == DnDConstants.ACTION_MOVE) {
dsde.getDragSourceContext().setCursor(DragSource.DefaultMoveDrop);
} else {
dsde.getDragSourceContext().setCursor(DragSource.DefaultMoveNoDrop);
}
}
}
@NotNull
@Override
public WebDockableFrame getComponent ( @NotNull final FrameDragData object, @NotNull final DragSourceDragEvent event )
{
final WebDockablePane pane = dockablePane.get ();
if ( pane != null )
{
return pane.getFrame ( object.getId () );
}
else
{
final String msg = "Unable to resolve WebDockablePane for dragged frame with identifier: %s";
throw new DragException ( String.format ( msg, object.getId () ) );
}
}
@Override
public final void dragEnter(DragSourceDragEvent dsde) {
int action = dsde.getDropAction();
if (action == DnDConstants.ACTION_COPY) {
dsde.getDragSourceContext().setCursor(DragSource.DefaultCopyDrop);
} else {
if (action == DnDConstants.ACTION_MOVE) {
dsde.getDragSourceContext().setCursor(DragSource.DefaultMoveDrop);
} else {
dsde.getDragSourceContext().setCursor(DragSource.DefaultMoveNoDrop);
}
}
}
@Override
public void moved ( @NotNull final DragSourceDragEvent event )
{
/**
* No extra updates required on this event.
*/
}
public final void dragOver(DragSourceDragEvent dsde) {
int action = dsde.getDropAction();
if (action == DnDConstants.ACTION_COPY) {
dsde.getDragSourceContext().setCursor(DragSource.DefaultCopyDrop);
}
else {
if (action == DnDConstants.ACTION_MOVE) {
dsde.getDragSourceContext().setCursor(DragSource.DefaultMoveDrop);
}
else {
dsde.getDragSourceContext().setCursor(DragSource.DefaultMoveNoDrop);
}
}
}
public void run() {
DragSourceContext dragSourceContext =
SunDragSourceContextPeer.this.getDragSourceContext();
try {
switch (dispatchType) {
case DISPATCH_ENTER:
dragSourceContext.dragEnter((DragSourceDragEvent)event);
break;
case DISPATCH_MOTION:
dragSourceContext.dragOver((DragSourceDragEvent)event);
break;
case DISPATCH_CHANGED:
dragSourceContext.dropActionChanged((DragSourceDragEvent)event);
break;
case DISPATCH_EXIT:
dragSourceContext.dragExit(event);
break;
case DISPATCH_MOUSE_MOVED:
dragSourceContext.dragMouseMoved((DragSourceDragEvent)event);
break;
case DISPATCH_FINISH:
try {
dragSourceContext.dragDropEnd((DragSourceDropEvent)event);
} finally {
SunDragSourceContextPeer.this.cleanup();
}
break;
default:
throw new IllegalStateException("Dispatch type: " +
dispatchType);
}
} finally {
SunDragSourceContextPeer.this.quitSecondaryEventLoop();
}
}