Examples of java.awt.dnd.DragSourceDragEvent

java.awt.dnd.DragSourceDragEvent
The DragSourceDragEvent is delivered from the DragSourceContextPeer, via the DragSourceContext, to the DragSourceListener registered with that DragSourceContext and with its associated DragSource.
The DragSourceDragEvent reports the target drop action and the user drop action that reflect the current state of the drag operation.
Target drop action is one of DnDConstants that represents the drop action selected by the current drop target if this drop action is supported by the drag source or DnDConstants.ACTION_NONE if this drop action is not supported by the drag source.
User drop action depends on the drop actions supported by the drag source and the drop action selected by the user. The user can select a drop action by pressing modifier keys during the drag operation:
```
 Ctrl + Shift -> ACTION_LINK Ctrl         -> ACTION_COPY Shift        -> ACTION_MOVE 
```
If the user selects a drop action, the user drop action is one of DnDConstants that represents the selected drop action if this drop action is supported by the drag source or DnDConstants.ACTION_NONE if this drop action is not supported by the drag source.
If the user doesn't select a drop action, the set of DnDConstants that represents the set of drop actions supported by the drag source is searched for DnDConstants.ACTION_MOVE, then for DnDConstants.ACTION_COPY, then for DnDConstants.ACTION_LINK and the user drop action is the first constant found. If no constant is found the user drop action is DnDConstants.ACTION_NONE. @since 1.2

    }
    
    /** Get the currently requested drop action. */
    protected int getDropAction(DragSourceEvent ev) {
        if (ev instanceof DragSourceDragEvent) {
            DragSourceDragEvent e = (DragSourceDragEvent)ev;
            return e.getDropAction();
        }
        if (ev instanceof DragSourceDropEvent) {
            return ((DragSourceDropEvent)ev).getDropAction();
        }
        return NONE;

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     * one and there are no modifiers.
     */
    protected int adjustDropAction(DragSourceEvent ev) {
        int action = getDropAction(ev);
        if (ev instanceof DragSourceDragEvent) {
            DragSourceDragEvent e = (DragSourceDragEvent)ev;
            if (action == NONE) {
                int mods = e.getGestureModifiersEx() & KEY_MASK;
                if (mods == 0) {
                    action = getAcceptableDropAction(e.getTargetActions());
                }
            }
        }
        return action;
    }

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    private void describe(String type, DragSourceEvent e) {
        if (false) {
            DragSourceContext ds = e.getDragSourceContext();
            String msg = "drag: " + type;
            if (e instanceof DragSourceDragEvent) {
                DragSourceDragEvent ev = (DragSourceDragEvent)e;
                msg += ": src=" + actionString(ds.getSourceActions())
                    + " usr=" + actionString(ev.getUserAction())
                    + " tgt=" + actionString(ev.getTargetActions())
                    + " act=" + actionString(ev.getDropAction())
                    + " mods=" + ev.getGestureModifiersEx();
            }
            else {
                msg += ": e=" + e;
            }
            if (!msg.equals(lastAction)) {

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        final int dropAction =
            SunDragSourceContextPeer.convertModifiersToDropAction(modifiers,
                                                                  sourceActions);


        DragSourceDragEvent event =
            new DragSourceDragEvent(getDragSourceContext(),
                                    dropAction,
                                    targetAction & sourceActions,
                                    modifiers, x, y);
        EventDispatcher dispatcher = new EventDispatcher(dispatchType, event);

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            break;
        }
    }
    
    private DragSourceDragEvent newDragSourceDragEvent() {
        return new DragSourceDragEvent(
                context, userAction, targetActions, modifiers, x, y);
    }

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            break;
        }
    }
    
    private DragSourceDragEvent newDragSourceDragEvent() {
        return new DragSourceDragEvent(
                context, userAction, targetActions, modifiers, x, y);
    }

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    }
    
    /** Get the currently requested drop action. */
    protected int getDropAction(DragSourceEvent ev) {
        if (ev instanceof DragSourceDragEvent) {
            DragSourceDragEvent e = (DragSourceDragEvent)ev;
            return e.getDropAction();
        }
        if (ev instanceof DragSourceDropEvent) {
            return ((DragSourceDropEvent)ev).getDropAction();
        }
        return NONE;

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     * one and there are no modifiers.
     */
    protected int adjustDropAction(DragSourceEvent ev) {
        int action = getDropAction(ev);
        if (ev instanceof DragSourceDragEvent) {
            DragSourceDragEvent e = (DragSourceDragEvent)ev;
            if (action == NONE) {
                int mods = e.getGestureModifiersEx() & KEY_MASK;
                if (mods == 0) {
                    action = getAcceptableDropAction(e.getTargetActions());
                }
            }
        }
        return action;
    }

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    private void describe(String type, DragSourceEvent e) {
        if (false) {
            DragSourceContext ds = e.getDragSourceContext();
            String msg = "drag: " + type;
            if (e instanceof DragSourceDragEvent) {
                DragSourceDragEvent ev = (DragSourceDragEvent)e;
                msg += ": src=" + actionString(ds.getSourceActions())
                    + " usr=" + actionString(ev.getUserAction())
                    + " tgt=" + actionString(ev.getTargetActions())
                    + " act=" + actionString(ev.getDropAction())
                    + " mods=" + ev.getGestureModifiersEx();
            }
            else {
                msg += ": e=" + e;
            }
            if (!msg.equals(lastAction)) {

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    }
    
    /** Get the currently requested drop action. */
    protected int getDropAction(DragSourceEvent ev) {
        if (ev instanceof DragSourceDragEvent) {
            DragSourceDragEvent e = (DragSourceDragEvent)ev;
            return e.getDropAction();
        }
        if (ev instanceof DragSourceDropEvent) {
            return ((DragSourceDropEvent)ev).getDropAction();
        }
        return NONE;

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Related Classes of java.awt.dnd.DragSourceDragEvent

com.sun.jna.examples.dnd.DragHandler

com.sun.jna.platform.dnd.DragHandler

org.apache.harmony.awt.datatransfer.DragSourceEventProxy

sun.awt.dnd.SunDragSourceContextPeer

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