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ObjectComponent
Container
JComponent
JList
DnDList<T>
public class DnDList<T>
A sub-class of JList that supports drag and drop to reorder items within a single list and to copy or move items between lists. It is used by the MapLayerTable widget but has been written in a general fashion so that it may be used for other pusposes.
DnDListModel
,
Serialized Form
modules/unsupported/swing (gt-swing.jar)
Nested Class Summary |
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Nested classes/interfaces inherited from class JList |
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JList.AccessibleJList |
Nested classes/interfaces inherited from class JComponent |
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JComponent.AccessibleJComponent |
Nested classes/interfaces inherited from class Container |
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Container.AccessibleAWTContainer |
Nested classes/interfaces inherited from class Component |
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Component.AccessibleAWTComponent, Component.BltBufferStrategy, Component.FlipBufferStrategy |
Field Summary |
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Fields inherited from class JList |
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HORIZONTAL_WRAP, VERTICAL, VERTICAL_WRAP |
Fields inherited from class JComponent |
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accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW |
Fields inherited from class Component |
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BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT |
Fields inherited from interface ImageObserver |
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ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH |
Constructor Summary | |
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DnDList()
Default constructor. |
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DnDList(DnDListModel<T> model)
Constructor allowing the list model to be specified |
Method Summary | |
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void |
dragDropEnd(DragSourceDropEvent dsde)
Description copied from interface: This method is invoked to signify that the Drag and Drop operation is complete. |
void |
dragEnter(DragSourceDragEvent dsde)
DragSourceListener method - presently ignored Description copied from interface: Called as the cursor's hotspot enters a platform-dependent drop site. |
void |
dragEnter(DropTargetDragEvent dtde)
Records the index of the list item (if any) pointed to by the mouse cursor Description copied from interface: Called while a drag operation is ongoing, when the mouse pointer enters the operable part of the drop site for the DropTarget registered with this listener. |
void |
dragExit(DragSourceEvent dse)
DragSourceListener method - presently ignored Description copied from interface: Called as the cursor's hotspot exits a platform-dependent drop site. |
void |
dragExit(DropTargetEvent dte)
Description copied from interface: Called while a drag operation is ongoing, when the mouse pointer has exited the operable part of the drop site for the DropTarget registered with this listener. |
void |
dragGestureRecognized(DragGestureEvent dge)
Called by the system when a drag gesture starts |
void |
dragOver(DragSourceDragEvent dsde)
DragSourceListener method - presently ignored Description copied from interface: Called as the cursor's hotspot moves over a platform-dependent drop site. |
void |
dragOver(DropTargetDragEvent dtde)
Records the index of the list item (if any) pointed to by the mouse cursor Description copied from interface: Called when a drag operation is ongoing, while the mouse pointer is still over the operable part of the drop site for the DropTarget registered with this listener. |
void |
drop(DropTargetDropEvent dtde)
Handles the moving (for drag and drop actions within this list) or transfer (for actions between lists) of list items. |
void |
dropActionChanged(DragSourceDragEvent dsde)
DragSourceListener method - presently ignored Description copied from interface: Called when the user has modified the drop gesture. |
void |
dropActionChanged(DropTargetDragEvent dtde)
DropTargetListener method - presently ignored Description copied from interface: Called if the user has modified the current drop gesture. |
DnDListModel<T> |
getModel()
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Methods inherited from class Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public DnDList()
public DnDList(DnDListModel<T> model)
model
- an instance of DnDListModel
IllegalArgumentException
- if model is nullMethod Detail |
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public DnDListModel<T> getModel()
getModel
in class JList
public void dragGestureRecognized(DragGestureEvent dge)
dragGestureRecognized
in interface DragGestureListener
public void dragEnter(DragSourceDragEvent dsde)
Description copied from interface:
Called as the cursor's hotspot enters a platform-dependent drop site.
This method is invoked when all the following conditions are true:
dragEnter
in interface DragSourceListener
public void dragOver(DragSourceDragEvent dsde)
Description copied from interface:
Called as the cursor's hotspot moves over a platform-dependent drop site.
This method is invoked when all the following conditions are true:
dragOver
in interface DragSourceListener
public void dropActionChanged(DragSourceDragEvent dsde)
Description copied from interface:
Called when the user has modified the drop gesture. This method is invoked when
the state of the input device(s) that the user is interacting with changes.
Such devices are typically the mouse buttons or keyboard modifiers that the
user is interacting with.
dropActionChanged
in interface DragSourceListener
public void dragExit(DragSourceEvent dse)
Description copied from interface:
Called as the cursor's hotspot exits a platform-dependent drop site.
This method is invoked when any of the following conditions are true:
dragExit
in interface DragSourceListener
public void dragDropEnd(DragSourceDropEvent dsde)
dragDropEnd
in interface DragSourceListener
public void dragEnter(DropTargetDragEvent dtde)
Description copied from interface:
Called while a drag operation is ongoing, when the mouse pointer enters
the operable part of the drop site for the DropTarget registered with
this listener.
dragEnter
in interface DropTargetListener
public void dragOver(DropTargetDragEvent dtde)
Description copied from interface:
Called when a drag operation is ongoing, while the mouse pointer is still
over the operable part of the drop site for the DropTarget registered with
this listener.
dragOver
in interface DropTargetListener
public void dropActionChanged(DropTargetDragEvent dtde)
Description copied from interface:
Called if the user has modified the current drop gesture.
dropActionChanged
in interface DropTargetListener
public void dragExit(DropTargetEvent dte)
dragExit
in interface DropTargetListener
public void drop(DropTargetDropEvent dtde)
This method is responsible for undertaking the transfer of the data associated with the gesture. The DropTargetDropEvent provides a means to obtain a Transferable object that represents the data object(s) to be transfered.
From this method, the DropTargetListener shall accept or reject the drop via the acceptDrop(int dropAction) or rejectDrop() methods of the DropTargetDropEvent parameter.
Subsequent to acceptDrop(), but not before, DropTargetDropEvent's getTransferable() method may be invoked, and data transfer may be performed via the returned Transferable's getTransferData() method.
At the completion of a drop, an implementation of this method is required to signal the success/failure of the drop by passing an appropriate boolean to the DropTargetDropEvent's dropComplete(boolean success) method.
Note: The data transfer should be completed before the call to the DropTargetDropEvent's dropComplete(boolean success) method. After that, a call to the getTransferData() method of the Transferable returned by DropTargetDropEvent.getTransferable() is guaranteed to succeed only if the data transfer is local; that is, only if DropTargetDropEvent.isLocalTransfer() returns true. Otherwise, the behavior of the call is implementation-dependent.
drop
in interface DropTargetListener
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