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/*******************************************************************************
* Copyright (c) 2001, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.xsd.ui.internal.graph.editpolicies;
import java.util.Iterator;
import java.util.List;
import org.eclipse.draw2d.Label;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gef.tools.CellEditorLocator;
import org.eclipse.gef.tools.DirectEditManager;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ComboBoxCellEditor;
import org.eclipse.jface.viewers.ICellEditorListener;
import org.eclipse.swt.custom.CCombo;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
public abstract class ComboBoxCellEditorManager extends DirectEditManager implements DirectEditPolicyDelegate
{
protected Label label;
public ComboBoxCellEditorManager(GraphicalEditPart source, Label label)
{
super(source, ComboBoxCellEditor.class, new InternalCellEditorLocator(label));
this.label = label;
}
protected void initCellEditor()
{
String initialLabelText = label.getText();
CCombo combo = (CCombo)getCellEditor().getControl();
combo.setFont(label.getFont());
combo.setForeground(label.getForegroundColor());
combo.setBackground(label.getBackgroundColor());
/*
combo.addKeyListener(new KeyAdapter() {
// hook key pressed - see PR 14201
public void keyPressed(KeyEvent keyEvent) {
if (keyEvent.character == 'z') {
getCellEditor().applyEditorValue();
}
}
});
*/
ICellEditorListener cellEditorListener = new ICellEditorListener()
{
public void cancelEditor()
{
// System.out.println("cancelEditor");
}
public void applyEditorValue()
{
// System.out.println("applyEditorValue");
}
public void editorValueChanged(boolean old, boolean newState)
{
// System.out.println("editorValueChanged");
}
};
getCellEditor().addListener(cellEditorListener);
String[] item = combo.getItems();
for (int i = 0; i < item.length; i++)
{
if (item[i].equals(initialLabelText))
{
getCellEditor().setValue(new Integer(i));
break;
}
}
}
// hack... for some reason the ComboBoxCellEditor does't fire an editorValueChanged to set the dirty flag
// unless we overide this method to return true, the manager is not notified of changes made in the cell editor
protected boolean isDirty()
{
return true;
}
protected CellEditor createCellEditorOn(Composite composite)
{
boolean isLabelTextInList = false;
List list = computeComboContent();
for (Iterator i = list.iterator(); i.hasNext(); )
{
String string = (String)i.next();
if (string.equals(label.getText()))
{
isLabelTextInList = true;
break;
}
}
if (!isLabelTextInList)
{
list.add(label.getText());
}
List sortedList = computeSortedList(list);
String[] stringArray = new String[sortedList.size()];
for (int i = 0; i < stringArray.length; i++)
{
stringArray[i] = (String)sortedList.get(i);
}
return new ComboBoxCellEditor(composite, stringArray);
}
protected List computeSortedList(List list)
{
return list;
}
protected abstract List computeComboContent();
protected abstract void performModify(String value);
public static class InternalCellEditorLocator implements CellEditorLocator
{
protected Label label;
public InternalCellEditorLocator(Label label)
{
this.label = label;
}
public void relocate(CellEditor celleditor)
{
CCombo combo = (CCombo)celleditor.getControl();
Point pref = combo.computeSize(-1, -1);
Rectangle rect = label.getTextBounds().getCopy();
label.translateToAbsolute(rect);
combo.setBounds(rect.x-4, rect.y-1, pref.x+1, pref.y+1);
}
}
// implements DirectEditPolicyDelegate
//
public void performEdit(CellEditor cellEditor)
{
CCombo combo = (CCombo)getCellEditor().getControl();
int index = combo.getSelectionIndex();
if (index != -1)
{
performModify(combo.getItem(index));
}
else
{
String typedValue = combo.getText();
if (combo.indexOf(typedValue) != -1)
{
performModify(typedValue);
}
else
{
String closeMatch = getCloseMatch(typedValue, combo.getItems());
if (closeMatch != null)
{
performModify(closeMatch);
}
else
{
Display.getCurrent().beep();
}
}
}
}
protected String getCloseMatch(String value, String[] items)
{
int matchIndex = -1;
for (int i = 0; i < items.length; i++)
{
String item = items[i];
String a = getLocalName(value);
String b = getLocalName(item);
if (a.equalsIgnoreCase(b))
{
matchIndex = i;
break;
}
}
return matchIndex != -1 ? items[matchIndex] : null;
}
protected String getLocalName(String string)
{
int index = string.indexOf(":");
return (index != -1) ? string.substring(index + 1) : string;
}
}
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