AOO410/main/accessibility/workben/org/openoffice/accessibility/awb/view/ObjectViewContainer.java - openoffice - Git at Google

 /**************************************************************
  *
  * 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.openoffice.accessibility.awb.view;

 import java.awt.Color;
 import java.awt.Component;
 import java.awt.Font;
 import java.awt.GridBagLayout;
 import java.awt.GridBagConstraints;
 import java.awt.Insets;

 import java.util.Vector;

 import java.lang.reflect.Method;
 import java.lang.NoSuchMethodException;
 import java.lang.IllegalAccessException;
 import java.lang.reflect.InvocationTargetException;

 import javax.swing.JPanel;
 import javax.swing.JTree;
 import javax.swing.BorderFactory;
 import javax.swing.border.Border;
 import javax.swing.border.BevelBorder;
 import javax.swing.SwingUtilities;

 import com.sun.star.accessibility.AccessibleEventObject;
 import com.sun.star.accessibility.XAccessibleContext;
 import com.sun.star.accessibility.XAccessibleComponent;
 import com.sun.star.accessibility.XAccessibleEventBroadcaster;
 import com.sun.star.accessibility.XAccessibleEventListener;
 import com.sun.star.accessibility.XAccessibleSelection;
 import com.sun.star.lang.EventObject;
 import com.sun.star.uno.UnoRuntime;

 import org.openoffice.accessibility.awb.view.ObjectView;


 /** This container of specialized object views displays information about
     one accessible object.
     In this it plays several roles:
     1. Object container.
     2. Accessibility event dispatcher.
     3. Object view class registration manager.
     4. Swing widget.
 */
 public class ObjectViewContainer
     extends JPanel
     implements XAccessibleEventListener
 {
     public ObjectViewContainer ()
     {
         maFont = new Font ("Dialog", Font.PLAIN, 11);
         maViewTemplates = new Vector ();
         maViewBorder = BorderFactory.createBevelBorder (BevelBorder.RAISED);
         GridBagLayout aLayout = new GridBagLayout ();
         setLayout (aLayout);
         //        maLayoutManager = new LayoutManager (this);
         maLayoutManager = null;

         RegisterView (ContextView.class);
         RegisterView (ComponentView.class);
         RegisterView (ParentView.class);
         RegisterView (StateSetView.class);
         RegisterView (FocusView.class);
         RegisterView (TextView.class);
         RegisterView (EditableTextView.class);
         RegisterView (TableView.class);
         RegisterView (SelectionView.class);
         RegisterView (ServiceInterfaceView.class);
         RegisterView (EventMonitorView.class);

         mxContext = null;

         //        addMouseListener (maLayoutManager);
         //        addMouseMotionListener (maLayoutManager);
     }


     /** Remove all existing views and create new ones according to the
         interfaces supported by the given object.
     */
     public synchronized void SetObject (XAccessibleContext xContext)
     {
         // Call Destroy at all views to give them a chance to release their
         // resources.
         int n = getComponentCount();
         for (int i=0; i<n; i++)
             ((ObjectView)getComponent(i)).Destroy();
         // Remove existing views.
         removeAll ();

         mxContext = xContext;

         // Add new views.
         for (int i=0; i<maViewTemplates.size(); i++)
         {
             try
             {
                 Class aViewClass = (Class)maViewTemplates.elementAt (i);
                 Method aCreateMethod = aViewClass.getDeclaredMethod (
                     "Create", new Class[] {
                         ObjectViewContainer.class,
                         XAccessibleContext.class});
                 if (aCreateMethod != null)
                 {
                     ObjectView aView = (ObjectView)
                         aCreateMethod.invoke (
 							null, new Object[] {this, xContext});
                     Add (aView);
                 }
             }
             catch (NoSuchMethodException e)
             {System.err.println ("Caught exception while creating view "
                 + i + " : " + e);}
             catch (IllegalAccessException e)
             {System.err.println ("Caught exception while creating view "
                 + i + " : " + e);}
             catch (InvocationTargetException e)
             {System.err.println ("Caught exception while creating view "
                 + i + " : " + e);}
         }

         UpdateLayoutManager ();

         // Now set the object at all views.
         n = getComponentCount();
         for (int i=0; i<n; i++)
             ((ObjectView)getComponent(i)).SetObject (xContext);

         setPreferredSize (getLayout().preferredLayoutSize (this));
         ((GridBagLayout) getLayout()).invalidateLayout(this);
         validate();
     }


     /** Add the given class to the list of classes which will be
         instantiated the next time an accessible object is set.
     */
     public void RegisterView (Class aObjectViewClass)
     {
         maViewTemplates.addElement (aObjectViewClass);
     }


     /** Replace one view class with another.
     */
     public void ReplaceView (Class aObjectViewClass, Class aSubstitution)
     {
         int nIndex = maViewTemplates.indexOf (aObjectViewClass);
         if (nIndex >= 0)
             maViewTemplates.setElementAt (aSubstitution, nIndex);
     }


     /** Return a font that should be used for widgets in the views.
     */
     public Font GetViewFont ()
     {
         return maFont;
     }

     public Color GetErrorColor ()
     {
         return new Color (255,80,50);
     }

     /** Add an object view and place it below all previously added views.
         @param aView
             This argument may be null.  In this case nothing happens.
     */
     private void Add (ObjectView aView)
     {
         if (aView != null)
         {
             GridBagConstraints constraints = new GridBagConstraints ();
             constraints.gridx = 0;
             constraints.gridy = getComponentCount();
             constraints.gridwidth = 1;
             constraints.gridheight = 1;
             constraints.weightx = 1;
             constraints.weighty = 0;
             constraints.ipadx = 2;
             constraints.ipady = 5;
             constraints.insets = new Insets (5,5,5,5);
             constraints.anchor = GridBagConstraints.NORTH;
             constraints.fill = GridBagConstraints.HORIZONTAL;

             aView.setBorder (
                 BorderFactory.createTitledBorder (
                     maViewBorder, aView.GetTitle()));

             add (aView, constraints);
         }
     }

     /** Update the layout manager by setting the vertical weight of the
         bottom entry to 1 and so make it strech to over the available
         space.

     */
     private void UpdateLayoutManager ()
     {
         // Adapt the layout manager.
         if (getComponentCount() > 1000)
         {
             Component aComponent = getComponent (getComponentCount()-1);
             GridBagLayout aLayout = (GridBagLayout)getLayout();
             GridBagConstraints aConstraints = aLayout.getConstraints (aComponent);
             aConstraints.weighty = 1;
             aLayout.setConstraints (aComponent, aConstraints);
         }
     }


     /** Put the event just received into the event queue which will deliver
         it soon asynchronuously to the DispatchEvent method.
     */
     public void notifyEvent (final AccessibleEventObject aEvent)
     {
         SwingUtilities.invokeLater(
             new Runnable()
             {
                 public void run()
                 {
                     DispatchEvent (aEvent);
                 }
             }
         );
     }


     /** Forward accessibility events to all views without them being
         registered as event listeners each on their own.
     */
     private void DispatchEvent (AccessibleEventObject aEvent)
     {
         int n = getComponentCount();
         for (int i=0; i<n; i++)
             ((ObjectView)getComponent(i)).notifyEvent (aEvent);
     }


     /** When the object is disposed that is displayed by the views of this
         container then tell all views about this.
     */
     public void disposing (EventObject aEvent)
     {
         mxContext = null;
        SwingUtilities.invokeLater(
             new Runnable()
             {
                 public void run()
                 {
                     SetObject (null);
                 }
             }
             );
     }


     /// The current accessible context display by the views.
     private XAccessibleContext mxContext;

     /// Observe this tree for selection changes and notify them to all
     /// children.
     private JTree maTree;
     private Border maViewBorder;
     /// List of view templates which are instantiated when new object is set.
     private Vector maViewTemplates;
     private Font maFont;
     private LayoutManager maLayoutManager;
 }
	/**************************************************************
	*
	* 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.openoffice.accessibility.awb.view;

	import java.awt.Color;
	import java.awt.Component;
	import java.awt.Font;
	import java.awt.GridBagLayout;
	import java.awt.GridBagConstraints;
	import java.awt.Insets;

	import java.util.Vector;

	import java.lang.reflect.Method;
	import java.lang.NoSuchMethodException;
	import java.lang.IllegalAccessException;
	import java.lang.reflect.InvocationTargetException;

	import javax.swing.JPanel;
	import javax.swing.JTree;
	import javax.swing.BorderFactory;
	import javax.swing.border.Border;
	import javax.swing.border.BevelBorder;
	import javax.swing.SwingUtilities;

	import com.sun.star.accessibility.AccessibleEventObject;
	import com.sun.star.accessibility.XAccessibleContext;
	import com.sun.star.accessibility.XAccessibleComponent;
	import com.sun.star.accessibility.XAccessibleEventBroadcaster;
	import com.sun.star.accessibility.XAccessibleEventListener;
	import com.sun.star.accessibility.XAccessibleSelection;
	import com.sun.star.lang.EventObject;
	import com.sun.star.uno.UnoRuntime;

	import org.openoffice.accessibility.awb.view.ObjectView;



	/** This container of specialized object views displays information about
	one accessible object.
	In this it plays several roles:
	1. Object container.
	2. Accessibility event dispatcher.
	3. Object view class registration manager.
	4. Swing widget.
	*/
	public class ObjectViewContainer
	extends JPanel
	implements XAccessibleEventListener
	{
	public ObjectViewContainer ()
	{
	maFont = new Font ("Dialog", Font.PLAIN, 11);
	maViewTemplates = new Vector ();
	maViewBorder = BorderFactory.createBevelBorder (BevelBorder.RAISED);
	GridBagLayout aLayout = new GridBagLayout ();
	setLayout (aLayout);
	// maLayoutManager = new LayoutManager (this);
	maLayoutManager = null;

	RegisterView (ContextView.class);
	RegisterView (ComponentView.class);
	RegisterView (ParentView.class);
	RegisterView (StateSetView.class);
	RegisterView (FocusView.class);
	RegisterView (TextView.class);
	RegisterView (EditableTextView.class);
	RegisterView (TableView.class);
	RegisterView (SelectionView.class);
	RegisterView (ServiceInterfaceView.class);
	RegisterView (EventMonitorView.class);

	mxContext = null;

	// addMouseListener (maLayoutManager);
	// addMouseMotionListener (maLayoutManager);
	}



	/** Remove all existing views and create new ones according to the
	interfaces supported by the given object.
	*/
	public synchronized void SetObject (XAccessibleContext xContext)
	{
	// Call Destroy at all views to give them a chance to release their
	// resources.
	int n = getComponentCount();
	for (int i=0; i<n; i++)
	((ObjectView)getComponent(i)).Destroy();
	// Remove existing views.
	removeAll ();

	mxContext = xContext;

	// Add new views.
	for (int i=0; i<maViewTemplates.size(); i++)
	{
	try
	{
	Class aViewClass = (Class)maViewTemplates.elementAt (i);
	Method aCreateMethod = aViewClass.getDeclaredMethod (
	"Create", new Class[] {
	ObjectViewContainer.class,
	XAccessibleContext.class});
	if (aCreateMethod != null)
	{
	ObjectView aView = (ObjectView)
	aCreateMethod.invoke (
	null, new Object[] {this, xContext});
	Add (aView);
	}
	}
	catch (NoSuchMethodException e)
	{System.err.println ("Caught exception while creating view "
	+ i + " : " + e);}
	catch (IllegalAccessException e)
	{System.err.println ("Caught exception while creating view "
	+ i + " : " + e);}
	catch (InvocationTargetException e)
	{System.err.println ("Caught exception while creating view "
	+ i + " : " + e);}
	}

	UpdateLayoutManager ();

	// Now set the object at all views.
	n = getComponentCount();
	for (int i=0; i<n; i++)
	((ObjectView)getComponent(i)).SetObject (xContext);

	setPreferredSize (getLayout().preferredLayoutSize (this));
	((GridBagLayout) getLayout()).invalidateLayout(this);
	validate();
	}




	/** Add the given class to the list of classes which will be
	instantiated the next time an accessible object is set.
	*/
	public void RegisterView (Class aObjectViewClass)
	{
	maViewTemplates.addElement (aObjectViewClass);
	}




	/** Replace one view class with another.
	*/
	public void ReplaceView (Class aObjectViewClass, Class aSubstitution)
	{
	int nIndex = maViewTemplates.indexOf (aObjectViewClass);
	if (nIndex >= 0)
	maViewTemplates.setElementAt (aSubstitution, nIndex);
	}


	/** Return a font that should be used for widgets in the views.
	*/
	public Font GetViewFont ()
	{
	return maFont;
	}

	public Color GetErrorColor ()
	{
	return new Color (255,80,50);
	}

	/** Add an object view and place it below all previously added views.
	@param aView
	This argument may be null. In this case nothing happens.
	*/
	private void Add (ObjectView aView)
	{
	if (aView != null)
	{
	GridBagConstraints constraints = new GridBagConstraints ();
	constraints.gridx = 0;
	constraints.gridy = getComponentCount();
	constraints.gridwidth = 1;
	constraints.gridheight = 1;
	constraints.weightx = 1;
	constraints.weighty = 0;
	constraints.ipadx = 2;
	constraints.ipady = 5;
	constraints.insets = new Insets (5,5,5,5);
	constraints.anchor = GridBagConstraints.NORTH;
	constraints.fill = GridBagConstraints.HORIZONTAL;

	aView.setBorder (
	BorderFactory.createTitledBorder (
	maViewBorder, aView.GetTitle()));

	add (aView, constraints);
	}
	}

	/** Update the layout manager by setting the vertical weight of the
	bottom entry to 1 and so make it strech to over the available
	space.

	*/
	private void UpdateLayoutManager ()
	{
	// Adapt the layout manager.
	if (getComponentCount() > 1000)
	{
	Component aComponent = getComponent (getComponentCount()-1);
	GridBagLayout aLayout = (GridBagLayout)getLayout();
	GridBagConstraints aConstraints = aLayout.getConstraints (aComponent);
	aConstraints.weighty = 1;
	aLayout.setConstraints (aComponent, aConstraints);
	}
	}




	/** Put the event just received into the event queue which will deliver
	it soon asynchronuously to the DispatchEvent method.
	*/
	public void notifyEvent (final AccessibleEventObject aEvent)
	{
	SwingUtilities.invokeLater(
	new Runnable()
	{
	public void run()
	{
	DispatchEvent (aEvent);
	}
	}
	);
	}




	/** Forward accessibility events to all views without them being
	registered as event listeners each on their own.
	*/
	private void DispatchEvent (AccessibleEventObject aEvent)
	{
	int n = getComponentCount();
	for (int i=0; i<n; i++)
	((ObjectView)getComponent(i)).notifyEvent (aEvent);
	}



	/** When the object is disposed that is displayed by the views of this
	container then tell all views about this.
	*/
	public void disposing (EventObject aEvent)
	{
	mxContext = null;
	SwingUtilities.invokeLater(
	new Runnable()
	{
	public void run()
	{
	SetObject (null);
	}
	}
	);
	}




	/// The current accessible context display by the views.
	private XAccessibleContext mxContext;

	/// Observe this tree for selection changes and notify them to all
	/// children.
	private JTree maTree;
	private Border maViewBorder;
	/// List of view templates which are instantiated when new object is set.
	private Vector maViewTemplates;
	private Font maFont;
	private LayoutManager maLayoutManager;
	}