/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.jmeter.testbeans.gui;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeListener;
import java.beans.PropertyEditor;
import java.beans.PropertyEditorSupport;
import java.io.File;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JPanel;

import org.apache.jmeter.gui.util.FileDialoger;

/**
 * A property editor for File properties.
 * <p>
 * Note that it never gives out File objects, but always Strings. This is
 * because JMeter is now too dumb to handle File objects (there's no
 * FileProperty).
 * 
 */
public class FileEditor implements PropertyEditor, ActionListener {

	/**
	 * The editor's panel.
	 */
	private JPanel panel;

	/**
	 * The editor handling the text field inside:
	 */
	private PropertyEditor editor;

	public FileEditor() {
		// Create a button to trigger the file chooser:
		JButton button = new JButton("Browse...");
		button.addActionListener(this);

		// Get a WrapperEditor to provide the field or combo -- we'll delegate
		// most methods to it:
		editor = new WrapperEditor(this, new SimpleFileEditor(), new ComboStringEditor(), true, true, true, null);

		// Create a panel containing the combo and the button:
		panel = new JPanel(new BorderLayout(5, 0));
		panel.add(editor.getCustomEditor(), BorderLayout.CENTER);
		panel.add(button, BorderLayout.EAST);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
	 */
	public void actionPerformed(ActionEvent e) {
		JFileChooser chooser = FileDialoger.promptToOpenFile();

		if (chooser == null){
		    return;
		}

		setValue(chooser.getSelectedFile().getPath());
	}

	/**
	 * @param listener
	 */
	public void addPropertyChangeListener(PropertyChangeListener listener) {
		editor.addPropertyChangeListener(listener);
	}

	/**
	 * @return the text
	 */
	public String getAsText() {
		return editor.getAsText();
	}

	/**
	 * @return custom editor panel
	 */
	public Component getCustomEditor() {
		return panel;
	}

	/**
	 * @return the Java initialisation string
	 */
	public String getJavaInitializationString() {
		return editor.getJavaInitializationString();
	}

	/**
	 * @return the editor tags
	 */
	public String[] getTags() {
		return editor.getTags();
	}

	/**
	 * @return the value
	 */
	public Object getValue() {
		return editor.getValue();
	}

	/**
	 * @return true if the editor is paintable
	 */
	public boolean isPaintable() {
		return editor.isPaintable();
	}

	/**
	 * @param gfx
	 * @param box
	 */
	public void paintValue(Graphics gfx, Rectangle box) {
		editor.paintValue(gfx, box);
	}

	/**
	 * @param listener
	 */
	public void removePropertyChangeListener(PropertyChangeListener listener) {
		editor.removePropertyChangeListener(listener);
	}

	/**
	 * @param text
	 * @throws java.lang.IllegalArgumentException
	 */
	public void setAsText(String text) throws IllegalArgumentException {
		editor.setAsText(text);
	}

	/**
	 * @param value
	 */
	public void setValue(Object value) {
		editor.setValue(value);
	}

	/**
	 * @return true if supports a custom editor
	 */
	public boolean supportsCustomEditor() {
		return editor.supportsCustomEditor();
	}

	private static class SimpleFileEditor extends PropertyEditorSupport {
		/*
		 * (non-Javadoc)
		 * 
		 * @see java.beans.PropertyEditor#getAsText()
		 */
		public String getAsText() {
			return ((File) super.getValue()).getPath();
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see java.beans.PropertyEditor#setAsText(java.lang.String)
		 */
		public void setAsText(String text) throws IllegalArgumentException {
			super.setValue(new File(text));
		}

		/*
		 * Oh, I forgot: JMeter doesn't support File properties yet. Need to
		 * work on this as a String :-(
		 */
		public Object getValue() {
			return getAsText(); // should be super.getValue();
		}

		/**
		 * Tsk, tsk... I need to handle Strings when setting too.
		 */
		public void setValue(Object file) {
			setAsText((String) file);
		}
	}
}