/*******************************************************************************
 * Copyright (c) 2006 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.pagedesigner.meta.internal;

import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jst.pagedesigner.common.dialogfield.DialogField;
import org.eclipse.jst.pagedesigner.meta.EditorCreator;
import org.eclipse.jst.pagedesigner.meta.IAttributeDescriptor;
import org.eclipse.jst.pagedesigner.meta.IBindingHandler;
import org.eclipse.jst.pagedesigner.properties.celleditors.CellEditorWrapper;
import org.eclipse.jst.pagedesigner.ui.dialogfields.DialogFieldWrapper;
import org.eclipse.jst.pagedesigner.utils.CMUtil;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement;

/**
 * @author mengbo
 * @version 1.5
 */
public class DefaultEditorCreator extends EditorCreator {
	static IAttributeDescriptor _staticAttr;

	static IDOMElement _staticElement;

	static IBindingHandler _staticHandler;

	static CellEditorHolder _staticHolder;

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jst.pagedesigner.meta.EditorCreator#createCellEditor(org.eclipse.swt.widgets.Composite,
	 *      org.eclipse.jst.pagedesigner.meta.IAttributeDescriptor,
	 *      org.w3c.dom.Element)
	 */
	public CellEditor createCellEditor(Composite parent,
			IAttributeDescriptor attr, IDOMElement element) {
		return CellEditorFactoryRegistry.getInstance().createCellEditor(parent,
				attr, element);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jst.pagedesigner.meta.EditorCreator#createDialogField(org.eclipse.jst.pagedesigner.meta.IAttributeDescriptor)
	 */
	public DialogField createDialogField(IAttributeDescriptor attr) {
		return CellEditorFactoryRegistry.getInstance().createDialogField(attr);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jst.pagedesigner.meta.EditorCreator#createCellEditorWithWrapper(org.eclipse.swt.widgets.Composite,
	 *      org.eclipse.jst.pagedesigner.meta.IAttributeDescriptor,
	 *      org.w3c.dom.Element,
	 *      org.eclipse.jst.pagedesigner.meta.IBindingHandler,
	 *      org.eclipse.swt.graphics.Image)
	 */
	public CellEditor createCellEditorWithWrapper(Composite parent,
			IAttributeDescriptor attr, final IDOMElement element,
			IBindingHandler handler1) {
		final IBindingHandler handler = (handler1 == null ? getSystemDefaultBindingHandler()
				: handler1);
		String uri = CMUtil.getElementNamespaceURI(element);
		String tagName = element.getLocalName();
		if (!handler.isEnabled(element, element, uri, tagName, attr)) {
			// should not enabled, so directly return original cell editor
			return createCellEditor(parent, attr, element);
		}
		try {
			// since "createWrappedCellEditor()" and "getBindingImage()" is
			// called from the constructor of CellEditorWrapper, at that time,
			// can't reference this DefaultEditorCreator and final fields yet,
			// so use static variable for it.
			_staticAttr = attr;
			_staticElement = element;
			_staticHandler = handler;

			return new CellEditorWrapper(parent) {
				/*
				 * (non-Javadoc)
				 * 
				 * @see org.eclipse.jst.pagedesigner.properties.celleditors.CellEditorWrapper#createWrappedCellEditor(org.eclipse.swt.widgets.Composite)
				 */
				protected CellEditor createWrappedCellEditor(Composite cell) {
					return EditorCreator.getInstance().createCellEditor(cell,
							_staticAttr, _staticElement);
				}

				/*
				 * (non-Javadoc)
				 * 
				 * @see org.eclipse.jst.pagedesigner.properties.celleditors.CellEditorWrapper#openDialogBox(org.eclipse.swt.widgets.Control)
				 */
				protected Object openDialogBox(Control cellEditorWindow) {
					return handler.handleBinding(cellEditorWindow.getShell(),
							element, element, convertToString(this.getValue()));
				}

				/*
				 * (non-Javadoc)
				 * 
				 * @see org.eclipse.jst.pagedesigner.properties.celleditors.CellEditorWrapper#getBindingImage()
				 */
				protected Image getBindingImage() {
					return _staticHandler.getImage();
				}
			};
		} finally {
			_staticAttr = null;
			_staticElement = null;
			_staticHandler = null;
			_staticHolder = null;
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jst.pagedesigner.meta.EditorCreator#createCellEditorWithWrapper(org.eclipse.swt.widgets.Composite,
	 *      org.eclipse.jst.pagedesigner.meta.IAttributeDescriptor,
	 *      org.eclipse.jst.pagedesigner.meta.EditorCreator.CellEditorHolder,
	 *      org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement,
	 *      org.eclipse.jst.pagedesigner.meta.IBindingHandler)
	 */
	public CellEditor createCellEditorWithWrapper(Composite parent,
			IAttributeDescriptor attr, CellEditorHolder holder,
			final IDOMElement element, IBindingHandler handler1) {
		final IBindingHandler handler = (handler1 == null ? getSystemDefaultBindingHandler()
				: handler1);
		String uri = CMUtil.getElementNamespaceURI(element);
		String tagName = element.getLocalName();
		if (!handler.isEnabled(element, element, uri, tagName, attr)) {
			// should not enabled, so directly return original cell editor
			return holder.createCellEditor(parent);
		}
		try {
			// since "createWrappedCellEditor()" and "getBindingImage()" is
			// called from the constructor of CellEditorWrapper, at that time,
			// can't reference this DefaultEditorCreator and final fields yet,
			// so use static variable for it.
			_staticElement = element;
			_staticHandler = handler;
			_staticHolder = holder;

			return new CellEditorWrapper(parent) {
				/*
				 * (non-Javadoc)
				 * 
				 * @see org.eclipse.jst.pagedesigner.properties.celleditors.CellEditorWrapper#createWrappedCellEditor(org.eclipse.swt.widgets.Composite)
				 */
				protected CellEditor createWrappedCellEditor(Composite cell) {
					return _staticHolder.createCellEditor(cell);
				}

				/*
				 * (non-Javadoc)
				 * 
				 * @see org.eclipse.jst.pagedesigner.properties.celleditors.CellEditorWrapper#openDialogBox(org.eclipse.swt.widgets.Control)
				 */
				protected Object openDialogBox(Control cellEditorWindow) {
					return handler.handleBinding(cellEditorWindow.getShell(),
							element, element, convertToString(this.getValue()));
				}

				/*
				 * (non-Javadoc)
				 * 
				 * @see org.eclipse.jst.pagedesigner.properties.celleditors.CellEditorWrapper#getBindingImage()
				 */
				protected Image getBindingImage() {
					return _staticHandler.getImage();
				}
			};
		} finally {
			_staticAttr = null;
			_staticElement = null;
			_staticHandler = null;
			_staticHolder = null;
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jst.pagedesigner.meta.EditorCreator#createDialogFieldWithWrapper(java.lang.String,
	 *      java.lang.String,
	 *      org.eclipse.jst.pagedesigner.meta.IAttributeDescriptor,
	 *      org.eclipse.jst.pagedesigner.meta.IBindingHandler)
	 */
	public DialogField createDialogFieldWithWrapper(String uri, String tagName,
			IAttributeDescriptor attr, IBindingHandler handler1) {
		final IBindingHandler handler = (handler1 == null ? getSystemDefaultBindingHandler()
				: handler1);
		DialogField field = createDialogField(attr);
		// if (field instanceof StringButtonDialogField)
		// {
		// ((StringButtonDialogField) field).setButtonLabel("...");
		// }
		DialogFieldWrapper wrapper = new DialogFieldWrapper(field, handler
				.getImage(), handler.getDisabledImage(), uri, tagName, attr,
				handler);
		wrapper.setDatabindingEnabled(true);

		return wrapper;
	}

	private String convertToString(Object value) {
		if (value == null) {
			return null;
		} else {
			return value.toString();
		}
	}
}