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 * 
 * 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
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package org.openoffice.accessibility.awb.view;

import java.awt.Color;
import java.awt.Dimension;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

import javax.swing.JLabel;

import com.sun.star.accessibility.AccessibleEventId;
import com.sun.star.accessibility.AccessibleEventObject;
import com.sun.star.accessibility.XAccessible;
import com.sun.star.accessibility.XAccessibleComponent;
import com.sun.star.accessibility.XAccessibleContext;
import com.sun.star.uno.UnoRuntime;

import org.openoffice.accessibility.misc.NameProvider;

/** The <type>ContextView</type> class displays information accessible over
    the <type>XAccessibleContext</type> interface.  This includes name, 
    description, and role.
*/
public class ComponentView
    extends ObjectView
{
    static public ObjectView Create (
        ObjectViewContainer aContainer,
        XAccessibleContext xContext)
    {
        if (UnoRuntime.queryInterface(
            XAccessibleComponent.class, xContext) != null)
            return new ComponentView (aContainer);
        else
            return null;
    }

    public ComponentView (ObjectViewContainer aContainer)
    {
        super (aContainer);

        ViewGridLayout aLayout = new ViewGridLayout (this);

        maRelativeLocationLabel = aLayout.AddLabeledEntry ("Relative Location: ");
        maAbsoluteLocationLabel = aLayout.AddLabeledEntry ("Location on Screen: ");
        maSizeLabel = aLayout.AddLabeledEntry ("Size");
        maBoundingBoxLabel = aLayout.AddLabeledEntry ("Bounding Box: ");
        maConsistencyLabel = aLayout.AddLabeledEntry ("Consistent: ");
        maForegroundColorLabel = aLayout.AddLabeledEntry ("Foreground Color: ");
        maBackgroundColorLabel = aLayout.AddLabeledEntry ("Background Color: ");
    }

     
    public void SetObject (XAccessibleContext xContext)
    {
        mxComponent = (XAccessibleComponent)UnoRuntime.queryInterface(
            XAccessibleComponent.class, xContext);
        super.SetObject (xContext);
    }

    public void Update ()
    {
        if (mxContext == null)
        {
			maRelativeLocationLabel.setText ("<null object>");
			maAbsoluteLocationLabel.setText ("<null object>");
			maSizeLabel.setText ("<null object>");
			maBoundingBoxLabel.setText ("<null object>");
			maConsistencyLabel.setText ("<null object>");
			maForegroundColorLabel.setText ("<null object>");
			maBackgroundColorLabel.setText ("<null object>");
        }
        else
        {
			com.sun.star.awt.Point aLocation = mxComponent.getLocation();
			maRelativeLocationLabel.setText (
				aLocation.X + ", " + aLocation.Y);
			com.sun.star.awt.Point aLocationOnScreen = 
				mxComponent.getLocationOnScreen();
			maAbsoluteLocationLabel.setText (
				aLocationOnScreen.X + ", " + aLocationOnScreen.Y);
			com.sun.star.awt.Size aSize = mxComponent.getSize();
			maSizeLabel.setText (
				aSize.Width + ", " + aSize.Height);
			com.sun.star.awt.Rectangle aBBox = mxComponent.getBounds();
			maBoundingBoxLabel.setText (
				aBBox.X + ", " + aBBox.Y + "," 
				+ aBBox.Width + ", " + aBBox.Height);
			int nColor = mxComponent.getForeground();
			maForegroundColorLabel.setText (
				"R"+ (nColor>>16&0xff)
				+ "G" + (nColor>>8&0xff)
				+ "B" + (nColor>>0&0xff)
				+ "A" + (nColor>>24&0xff));
			nColor = mxComponent.getBackground();
			maBackgroundColorLabel.setText (
				"R"+ (nColor>>16&0xff)
				+ "G" + (nColor>>8&0xff)
				+ "B" + (nColor>>0&0xff)
				+ "A" + (nColor>>24&0xff));

			// Check consistency of coordinates.
		    String sConsistency = new String ();
			if (aBBox.X!=aLocation.X || aBBox.Y!=aLocation.Y)
				sConsistency += (sConsistency.length()!=0?", ":"") +
					"Bounding box conflicts with relative location";
			if (aBBox.Width!=aSize.Width || aBBox.Height!=aSize.Height)
				sConsistency += (sConsistency.length()!=0?", ":"") +
					"Bounding box conflicts with size";
			XAccessible xParent = mxContext.getAccessibleParent();
			XAccessibleComponent xParentComponent = 
				(XAccessibleComponent)UnoRuntime.queryInterface(
					XAccessibleComponent.class, xParent);
			if (xParentComponent == null)
			{
				if (aLocation.X != aLocationOnScreen.X
					|| aLocation.Y != aLocationOnScreen.Y)
					sConsistency += (sConsistency.length()!=0?", ":"") +
						"location on screen does not equal "
						+ "relative location without parent";
			}
			else
			{
				com.sun.star.awt.Point aParentLocationOnScreen = 
					xParentComponent.getLocationOnScreen();
				if (aLocation.X+aParentLocationOnScreen.X 
					!= aLocationOnScreen.X
					|| aLocation.Y+aParentLocationOnScreen.Y
					!= aLocationOnScreen.Y)
					sConsistency += (sConsistency.length()!=0?", ":"") +
						"location on screen does not match "
						+ "relative location";
			}
			if (sConsistency.length() == 0)
				sConsistency += "yes";
            else
                maConsistencyLabel.setBackground (GetContainer().GetErrorColor());
			maConsistencyLabel.setText (sConsistency);
        }
    }

    public String GetTitle ()
    {
        return ("Component");
    }

    /** Listen for changes regarding displayed values.
    */
    public void notifyEvent (AccessibleEventObject aEvent)
    {
        switch (aEvent.EventId)
        {
            case AccessibleEventId.BOUNDRECT_CHANGED :
            case AccessibleEventId.VISIBLE_DATA_CHANGED :
                Update ();
        }
    }

	private XAccessibleComponent mxComponent;
    private JLabel
        maRelativeLocationLabel,
        maAbsoluteLocationLabel,
        maSizeLabel,
        maBoundingBoxLabel,
        maConsistencyLabel,
        maForegroundColorLabel,
        maBackgroundColorLabel;
}