/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.update.ui.forms.internal;

import org.eclipse.swt.events.*;
import org.eclipse.swt.widgets.*;
import java.util.*;

public class FormEntry {
	private Text text;
	private String value;
	private boolean dirty;
	private Vector listeners=new Vector();
	boolean ignoreModify=false;

public FormEntry(Text text) {
	this.text = text;
	this.value = text.getText();
	addListeners();
}
public void addFormTextListener(IFormTextListener listener) {
	listeners.addElement(listener);
}
private void addListeners() {
	text.addKeyListener(new KeyAdapter() {
		public void keyReleased(KeyEvent e) {
			keyReleaseOccured(e);
		}
	});
	text.addModifyListener(new ModifyListener() {
		public void modifyText(ModifyEvent e) {
			editOccured(e);
		}
	});
	text.addFocusListener (new FocusAdapter() {
		public void focusLost(FocusEvent e) {
			if (dirty) commit();
		}
	});
}
public void commit() {
	if (dirty) {
		value = text.getText();
		//notify
		for (Iterator iter = listeners.iterator(); iter.hasNext();) {
			((IFormTextListener) iter.next()).textValueChanged(this);
		}
	}
	dirty = false;
}
protected void editOccured(ModifyEvent e) {
	if (ignoreModify) return;
	dirty = true;
	for (Iterator iter = listeners.iterator(); iter.hasNext();) {
		((IFormTextListener) iter.next()).textDirty(this);
	}
}

public Text getControl() {
	return text;
}
public java.lang.String getValue() {
	return value;
}
public boolean isDirty() {
	return dirty;
}
protected void keyReleaseOccured(KeyEvent e) {
	if (e.character == '\r') {
		// commit value
		if (dirty) commit();
	}
	else if (e.character == '\u001b') { // Escape character
		text.setText(value!=null?value:""); // restore old
		dirty= false;
	}
}
public void removeFormTextListener(IFormTextListener listener) {
	listeners.removeElement(listener);
}
public void setDirty(boolean newDirty) {
	dirty = newDirty;
}
public void setValue(String value) {
	if (text!=null) text.setText(value!=null?value:"");
	this.value = value;
}

public void setValue(String value, boolean blockNotification) {
	ignoreModify = blockNotification;
	setValue(value);
	ignoreModify = false;
}

}