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/*******************************************************************************
* Copyright (c) 2004, 2005 Sybase, Inc. 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:
* Sybase, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.jsf.facesconfig.ui.pageflow.editpart;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.Label;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gef.tools.CellEditorLocator;
import org.eclipse.gef.tools.DirectEditManager;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.VerifyEvent;
import org.eclipse.swt.events.VerifyListener;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Text;
/**
* DirectEditManager for Pageflow node
*
* @author - Xiaoguang Zhang
*/
public class PageflowDirectEditManager extends DirectEditManager {
/** text font */
protected Font scaledFont;
/** verify listener for the text control */
protected VerifyListener verifyListener;
/** the direct editor's parent label. */
protected Label label;
/**
* Creates a new PageflowDirectEditManager with the given attributes.
*
* @param source
* the source EditPart
* @param editorType
* type of editor
* @param locator
* the CellEditorLocator
*/
public PageflowDirectEditManager(GraphicalEditPart source,
Class editorType, CellEditorLocator locator, Label label) {
super(source, editorType, locator);
this.label = label;
}
/*
* (non-javadoc)
*
* @see org.eclipse.gef.tools.DirectEditManager#bringDown()
*/
protected void bringDown() {
// This method might be re-entered when super.bringDown() is called.
Font disposeFont = scaledFont;
scaledFont = null;
super.bringDown();
if (disposeFont != null) {
disposeFont.dispose();
}
}
/*
* (non-javadoc)
*
* @see org.eclipse.gef.tools.DirectEditManager#initCellEditor()
*/
protected void initCellEditor() {
Text text = (Text) getCellEditor().getControl();
verifyListener = new VerifyListener() {
public void verifyText(VerifyEvent event) {
Text text = (Text) getCellEditor().getControl();
String oldText = text.getText();
// get the left string of the new input character
String leftText = oldText.substring(0, event.start);
// get the right string of the new input charactor
String rightText = oldText.substring(event.end, oldText
.length());
GC gc = new GC(text);
Point size = gc.textExtent(leftText + event.text + rightText);
gc.dispose();
if (size.x != 0) {
size = text.computeSize(size.x, SWT.DEFAULT);
}
getCellEditor().getControl().setSize(size.x, size.y);
}
};
text.addVerifyListener(verifyListener);
// set the initial text, font, to the direct editor
String initialLabelText = label.getText();
getCellEditor().setValue(initialLabelText);
IFigure figure = ((GraphicalEditPart) getEditPart()).getFigure();
scaledFont = figure.getFont();
FontData data = scaledFont.getFontData()[0];
Dimension fontSize = new Dimension(0, data.getHeight());
label.translateToAbsolute(fontSize);
data.setHeight(fontSize.height);
if (scaledFont != null & !scaledFont.isDisposed())
scaledFont.dispose();
scaledFont = new Font(null, data);
text.setFont(scaledFont);
text.selectAll();
}
/*
* (non-javadoc)
*
* @see org.eclipse.gef.tools.DirectEditManager#unhookListeners()
*/
protected void unhookListeners() {
super.unhookListeners();
Text text = (Text) getCellEditor().getControl();
text.removeVerifyListener(verifyListener);
verifyListener = null;
}
}
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