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/*
* @(#)EditorGraph.java 3.3 23-APR-04
*
* Copyright (c) 2001-2005, Gaudenz Alder
*
* See LICENSE file in distribution for licensing details of this source file
*/
package com.jgraph.example;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.event.CellEditorListener;
import org.jgraph.JGraph;
import org.jgraph.graph.CellView;
import org.jgraph.graph.GraphCellEditor;
import org.jgraph.graph.GraphModel;
import org.jgraph.plaf.basic.BasicGraphUI;
/**
* An example that demonstrates how to use a JDialog
* as a CellEditor in JGraph.
*
* @version 1.1 23/12/02
* @author Gaudenz Alder
*/
public class EditorGraph extends JGraph {
/**
* Constructs a EditorGraph with a sample model.
*/
public EditorGraph() {
setInvokesStopCellEditing(true);
}
/**
* Constructs a EditorGraph for <code>model</code>.
*/
public EditorGraph(GraphModel model) {
super(model);
}
/**
* Override parent method with custom GraphUI.
*/
public void updateUI() {
setUI(new EditorGraphUI());
invalidate();
}
public static void main(String[] args) {
// Switch off D3D because of Sun XOR painting bug
// See http://www.jgraph.com/forum/viewtopic.php?t=4066
System.setProperty("sun.java2d.d3d", "false");
JFrame frame = new JFrame("EditorGraph");
frame.getContentPane().add(new EditorGraph());
frame.pack();
//frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
/**
* Definition of the custom GraphUI.
*/
public class EditorGraphUI extends BasicGraphUI {
protected CellEditorListener cellEditorListener;
protected JFrame editDialog = null;
/**
* Create the dialog using the cell's editing component.
*/
protected void createEditDialog(Object cell) {
Dimension editorSize = editingComponent.getPreferredSize();
editDialog = new JFrame("Edit " + graph.convertValueToString(cell));
editDialog.setSize(editorSize.width, editorSize.height);
editDialog.getContentPane().add(editingComponent);
editingComponent.validate();
editDialog.pack();
editDialog.setVisible(true);
// Invokes complete editing when the window is closing
editDialog.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
completeEditing();
}
});
}
/**
* Stops the editing session. If messageStop is true the editor
* is messaged with stopEditing, if messageCancel is true the
* editor is messaged with cancelEditing. If messageGraph is true
* the graphModel is messaged with valueForCellChanged.
*/
protected void completeEditing(
boolean messageStop,
boolean messageCancel,
boolean messageGraph) {
if (stopEditingInCompleteEditing
&& editingComponent != null
&& editDialog != null) {
Object oldCell = editingCell;
GraphCellEditor oldEditor = cellEditor;
Object newValue = oldEditor.getCellEditorValue();
boolean requestFocus =
(graph != null
&& (graph.hasFocus() || editingComponent.hasFocus()));
editingCell = null;
editingComponent = null;
if (messageStop)
oldEditor.stopCellEditing();
else if (messageCancel)
oldEditor.cancelCellEditing();
editDialog.dispose();
if (requestFocus)
graph.requestFocus();
if (messageGraph) {
graphLayoutCache.valueForCellChanged(oldCell, newValue);
}
updateSize();
// Remove Editor Listener
if (oldEditor != null && cellEditorListener != null)
oldEditor.removeCellEditorListener(cellEditorListener);
cellEditor = null;
editDialog = null;
}
}
/**
* Will start editing for cell if there is a cellEditor and
* shouldSelectCell returns true.<p>
* This assumes that cell is valid and visible.
*/
protected boolean startEditing(Object cell, MouseEvent event) {
completeEditing();
if (graph.isCellEditable(cell) && editDialog == null) {
// Create Editing Component **** *****
CellView tmp = graphLayoutCache.getMapping(cell, false);
cellEditor = tmp.getEditor();
editingComponent =
cellEditor.getGraphCellEditorComponent(
graph,
cell,
graph.isCellSelected(cell));
if (cellEditor.isCellEditable(event)) {
editingCell = cell;
// Create Wrapper Dialog **** *****
createEditDialog(cell);
// Add Editor Listener
if (cellEditorListener == null)
cellEditorListener = createCellEditorListener();
if (cellEditor != null && cellEditorListener != null)
cellEditor.addCellEditorListener(cellEditorListener);
if (cellEditor.shouldSelectCell(event)) {
stopEditingInCompleteEditing = false;
try {
graph.setSelectionCell(cell);
} catch (Exception e) {
System.err.println("Editing exception: " + e);
}
stopEditingInCompleteEditing = true;
}
if (event instanceof MouseEvent) {
/* Find the component that will get forwarded all the
mouse events until mouseReleased. */
Point componentPoint =
SwingUtilities.convertPoint(
graph,
new Point(event.getX(), event.getY()),
editingComponent);
/* Create an instance of BasicTreeMouseListener to handle
passing the mouse/motion events to the necessary
component. */
// We really want similiar behavior to getMouseEventTarget,
// but it is package private.
Component activeComponent =
SwingUtilities.getDeepestComponentAt(
editingComponent,
componentPoint.x,
componentPoint.y);
if (activeComponent != null) {
new MouseInputHandler(
graph,
activeComponent,
event);
}
}
return true;
} else
editingComponent = null;
}
return false;
}
}
}
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