/*******************************************************************************
 * 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
 *     Jens Lukowski/Innoopract - initial renaming/restructuring
 *     
 *******************************************************************************/
package org.eclipse.wst.sse.ui.internal.contentproperties.ui;


import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;
import java.util.Map;

import org.eclipse.swt.events.FocusListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.wst.sse.ui.internal.Logger;


public class ComboList {
	private Combo combo;


	private List list;

	public ComboList(Composite parent, int style) {
		combo = new Combo(parent, style);
		list = new ArrayList();
	}


	/*
	 * following methods is original method of Combo class.
	 */
	public void add(String key) {
		checkError();
		combo.add(key);
		list.add(key);
	}

	public void add(String key, int index) {
		checkError();
		combo.add(key, index);
		list.add(index, key);
	}

	public void add(String key, String value) {
		checkError();
		combo.add(key);
		list.add(value);
	}

	public void add(String key, String value, int index) {
		checkError();
		combo.add(key, index);
		list.add(index, value);
	}

	public void addFocusListener(FocusListener listener) {
		combo.addFocusListener(listener);
	}

	public void addModifyListener(org.eclipse.swt.events.ModifyListener listener) {
		combo.addModifyListener(listener);
	}

	public void addSelectionListener(org.eclipse.swt.events.SelectionListener listener) {
		combo.addSelectionListener(listener);

	}

	private void checkError() {
		if (!isConsistency()) {
			Logger.log(Logger.WARNING, "Difference between the number of keys[" + combo.getItemCount() + "] and the number of values[" + list.size() + "] in ComboList"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
		}
	}

	public org.eclipse.swt.graphics.Point computeSize(int wHint, int hHint) {
		return combo.computeSize(wHint, hHint);
	}

	public Map createHashtable() {
		checkError();
		Map m = new Hashtable();
		for (int i = 0; i < list.size(); i++)
			m.put(combo.getItem(i), list.get(i));
		return m;
	}

	public void deselect(int i) {
		combo.deselect(i);
	}

	public void deselectAll() {
		combo.deselectAll();
	}

	public boolean equals(Object obj) {
		return combo.equals(obj);
	}

	private void exchangePosition(int i, int j) {
		String tmpKey = getItem(i);
		Object tmpValue = list.remove(i);

		combo.setItem(i, getItem(j));
		list.add(i, list.remove(j - 1));

		combo.setItem(j, tmpKey);
		list.add(j, tmpValue);
	}

	public boolean existsAsKey(String str) {
		if (combo.indexOf(str) >= 0)
			return true;
		else
			return false;
	}

	public boolean existsAsValue(String str) {
		if (list.indexOf(str) >= 0)
			return true;
		else
			return false;
	}

	public boolean getEnabled() {
		return combo.getEnabled();
	}

	public String getItem(int index) {
		return combo.getItem(index);
	}

	public int getItemCount() {
		return combo.getItemCount();
	}

	public String getKey(String value) {
		if (value == null)
			return null;
		int index = -1;
		checkError();
		for (int i = 0; i < list.size(); i++) {
			if (!list.get(i).equals(value))
				continue;
			index = i;
			break;
		}
		if (index != -1)
			return combo.getItem(index);
		else
			return null;
	}

	public Object getLayoutData() {
		return combo.getLayoutData();
	}

	public String getSelectedValue() {
		checkError();
		int index = getSelectionIndex();
		if (index < 0)
			return null;
		return getValue(getItem(index));
	}

	public int getSelectionIndex() {
		return combo.getSelectionIndex();
	}

	public String getText() {
		return combo.getText();
	}

	public String getValue(String key) {
		if (key == null)
			return null;
		int index = -1;
		checkError();
		for (int i = 0; i < combo.getItemCount(); i++) {
			if (!combo.getItem(i).equals(key))
				continue;
			index = i;
			break;
		}
		if (index != -1)
			return (String) list.get(index);
		else
			return null;
	}

	public int indexOf(String str) {
		return combo.indexOf(str);
	}


	public boolean isConsistency() {

		if (list.size() == combo.getItemCount())
			return true;
		else
			return false;
	}


	public void remove(int index) {
		checkError();
		combo.remove(index);
		list.remove(index);
	}

	public void remove(String str) {
		checkError();
		combo.remove(str);
		list.remove(str);
	}

	public void select(int index) {
		combo.select(index);
	}

	public void setEnabled(boolean enabled) {
		combo.setEnabled(enabled);
	}

	public boolean setFocus() {
		return combo.setFocus();
	}

	public void setItem(int index, String str) {
		checkError();
		combo.setItem(index, str);
		list.remove(index);
		list.add(index, str);
	}

	public void setItem(String[] strArray) {
		checkError();
		combo.setItems(strArray);
		for (int i = 0; i < strArray.length; i++)
			list.add(strArray[i]);
	}

	public void setLayout(org.eclipse.swt.widgets.Layout lo) {
		combo.setLayout(lo);
	}

	public void setLayoutData(Object layoutData) {
		combo.setLayoutData(layoutData);
	}

	public void setSelection(Point point) {
		combo.setSelection(point);
	}

	public void setText(String str) {
		combo.setText(str);
	}

	public void sortByKey(int offset) {
		if (offset < 0 || offset > this.combo.getItemCount() - 1)
			return;
		checkError();
		//
		for (int i = offset; i < combo.getItemCount() - 1; i++) {
			for (int j = i + 1; j < combo.getItemCount(); j++) {
				if (getItem(i).compareTo(getItem(j)) > 0) {
					exchangePosition(i, j);
				}
			}
		}
	}

}