Sirius.navigator.ui.dnd

Class MetaTreeNodeDnDHandler

java.lang.Object

Sirius.navigator.ui.dnd.MetaTreeNodeDnDHandler

All Implemented Interfaces:

de.cismet.connectioncontext.ConnectionContextProvider, DragGestureListener, DragSourceListener, DropTargetListener, EventListener

public class MetaTreeNodeDnDHandler
extends Object
implements DragGestureListener, DropTargetListener, DragSourceListener, de.cismet.connectioncontext.ConnectionContextProvider

DOCUMENT ME!

Version:

$Revision$, $Date$

Author:

pascal

Constructor Summary

Constructors

Constructor and Description
MetaTreeNodeDnDHandler(MetaCatalogueTree metaTree) Creates a new MetaTreeNodeDnDHandler object.

Method Summary

Modifier and Type	Method and Description
void	dragDropEnd(DragSourceDropEvent dsde)
void	dragEnter(DragSourceDragEvent dsde)
void	dragEnter(DropTargetDragEvent dtde)
void	dragExit(DragSourceEvent dse)
void	dragExit(DropTargetEvent dte)
void	dragGestureRecognized(DragGestureEvent dge)
void	dragOver(DragSourceDragEvent dsde)
void	dragOver(DropTargetDragEvent e)
void	drop(DropTargetDropEvent dtde)
void	dropActionChanged(DragSourceDragEvent dsde)
void	dropActionChanged(DropTargetDragEvent dtde)
de.cismet.connectioncontext.ConnectionContext	getConnectionContext()
BufferedImage	getDragImage() private BufferedImage getDragImage(TreePath treePath, TreeNode treeNode, Rectangle pathBounds) { // Get the cell renderer (which is a JLabel) for the path being dragged JLabel cellRenderer = (JLabel) this.metaTree.getCellRenderer().getTreeCellRendererComponent(this.metaTree, treeNode, false, this.metaTree.isExpanded(treePath), treeNode.isLeaf(), 0, false); cellRenderer.setSize((int)pathBounds.getWidth(), (int)pathBounds.getHeight()); // <-- The layout manager would normally do this // Get a buffered image of the selection for dragging a ghost image BufferedImage dragImage = new BufferedImage((int)pathBounds.getWidth(), (int)pathBounds.getHeight(), BufferedImage.TYPE_INT_ARGB_PRE); Graphics2D g2 = dragImage.createGraphics(); // Ask the cell renderer to paint itself into the BufferedImage g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC, 0.5f)); // Make the image ghostlike cellRenderer.paint(g2); // Now paint a gradient UNDER the ghosted JLabel text (but not under the icon if any) // Note: this will need tweaking if your icon is not positioned to the left of the text Icon icon = cellRenderer.getIcon(); int nStartOfText = (icon == null) ? 0 : icon.getIconWidth() + cellRenderer.getIconTextGap(); g2.setComposite(AlphaComposite.getInstance(AlphaComposite.DST_OVER, 0.5f)); // Make the gradient ghostlike g2.setPaint(new GradientPaint(nStartOfText, 0, SystemColor.controlShadow, this.metaTree.getWidth(), 0, new Color(255,255,255,0))); g2.fillRect(nStartOfText, 0, this.metaTree.getWidth(), dragImage.getHeight()); g2.dispose(); return dragImage; }
BufferedImage	getDragImage(JTree tree) DOCUMENT ME!
void	setDragImage(BufferedImage dragImage) DOCUMENT ME!
void	updateDragMark(JTree tree, Point location) DOCUMENT ME!

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MetaTreeNodeDnDHandler

public MetaTreeNodeDnDHandler(MetaCatalogueTree metaTree)

Creates a new MetaTreeNodeDnDHandler object.

Parameters:

metaTree - DOCUMENT ME!

Method Detail

dragGestureRecognized

public void dragGestureRecognized(DragGestureEvent dge)

Specified by:

dragGestureRecognized in interface DragGestureListener

drop

public void drop(DropTargetDropEvent dtde)

Specified by:

drop in interface DropTargetListener

dragDropEnd

public void dragDropEnd(DragSourceDropEvent dsde)

Specified by:

dragDropEnd in interface DragSourceListener

updateDragMark

public void updateDragMark(JTree tree,
                           Point location)

DOCUMENT ME!

Parameters:

tree - DOCUMENT ME!

location - DOCUMENT ME!

getDragImage

public BufferedImage getDragImage(JTree tree)

DOCUMENT ME!

Parameters:

tree - DOCUMENT ME!

Returns:

DOCUMENT ME!

dragOver

public void dragOver(DropTargetDragEvent e)

Specified by:

dragOver in interface DropTargetListener

dragOver

public void dragOver(DragSourceDragEvent dsde)

Specified by:

dragOver in interface DragSourceListener

dragEnter

public void dragEnter(DropTargetDragEvent dtde)

Specified by:

dragEnter in interface DropTargetListener

dragEnter

public void dragEnter(DragSourceDragEvent dsde)

Specified by:

dragEnter in interface DragSourceListener

dragExit

public void dragExit(DragSourceEvent dse)

Specified by:

dragExit in interface DragSourceListener

dragExit

public void dragExit(DropTargetEvent dte)

Specified by:

dragExit in interface DropTargetListener

dropActionChanged

public void dropActionChanged(DropTargetDragEvent dtde)

Specified by:

dropActionChanged in interface DropTargetListener

dropActionChanged

public void dropActionChanged(DragSourceDragEvent dsde)

Specified by:

dropActionChanged in interface DragSourceListener

getDragImage

public BufferedImage getDragImage()

private BufferedImage getDragImage(TreePath treePath, TreeNode treeNode, Rectangle pathBounds) { // Get the cell renderer (which is a JLabel) for the path being dragged JLabel cellRenderer = (JLabel) this.metaTree.getCellRenderer().getTreeCellRendererComponent(this.metaTree, treeNode, false, this.metaTree.isExpanded(treePath), treeNode.isLeaf(), 0, false); cellRenderer.setSize((int)pathBounds.getWidth(), (int)pathBounds.getHeight()); // <-- The layout manager would normally do this // Get a buffered image of the selection for dragging a ghost image BufferedImage dragImage = new BufferedImage((int)pathBounds.getWidth(), (int)pathBounds.getHeight(), BufferedImage.TYPE_INT_ARGB_PRE); Graphics2D g2 = dragImage.createGraphics(); // Ask the cell renderer to paint itself into the BufferedImage g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC, 0.5f)); // Make the image ghostlike cellRenderer.paint(g2); // Now paint a gradient UNDER the ghosted JLabel text (but not under the icon if any) // Note: this will need tweaking if your icon is not positioned to the left of the text Icon icon = cellRenderer.getIcon(); int nStartOfText = (icon == null) ? 0 : icon.getIconWidth() + cellRenderer.getIconTextGap(); g2.setComposite(AlphaComposite.getInstance(AlphaComposite.DST_OVER, 0.5f)); // Make the gradient ghostlike g2.setPaint(new GradientPaint(nStartOfText, 0, SystemColor.controlShadow, this.metaTree.getWidth(), 0, new Color(255,255,255,0))); g2.fillRect(nStartOfText, 0, this.metaTree.getWidth(), dragImage.getHeight()); g2.dispose(); return dragImage; }

Returns:

DOCUMENT ME!

setDragImage

public void setDragImage(BufferedImage dragImage)

DOCUMENT ME!

Parameters:

dragImage - DOCUMENT ME!

getConnectionContext

public final de.cismet.connectioncontext.ConnectionContext getConnectionContext()

Specified by:

getConnectionContext in interface de.cismet.connectioncontext.ConnectionContextProvider