bundles/org.eclipse.wst.xsd.ui/src-common/org/eclipse/wst/xsd/ui/internal/common/properties/sections/AbstractExtensionsSection.java - sourceediting/webtools.sourceediting - Git at Google

 /*******************************************************************************
  * Copyright (c) 2001, 2008 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
  *******************************************************************************/
 package org.eclipse.wst.xsd.ui.internal.common.properties.sections;

 import java.util.List;

 import org.eclipse.draw2d.ColorConstants;
 import org.eclipse.gef.commands.Command;
 import org.eclipse.jface.action.MenuManager;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.viewers.ILabelProvider;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.ITreeContentProvider;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.jface.viewers.TreeViewer;
 import org.eclipse.jface.window.Window;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.SashForm;
 import org.eclipse.swt.custom.ScrolledComposite;
 import org.eclipse.swt.events.MouseTrackAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Tree;
 import org.eclipse.swt.widgets.TreeItem;
 import org.eclipse.ui.IEditorPart;
 import org.eclipse.ui.IWorkbenchPart;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.forms.widgets.ExpandableComposite;
 import org.eclipse.ui.forms.widgets.Section;
 import org.eclipse.ui.views.properties.PropertySheet;
 import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage;
 import org.eclipse.wst.sse.core.internal.provisional.INodeAdapter;
 import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier;
 import org.eclipse.wst.xsd.ui.internal.common.commands.AddExtensionCommand;
 import org.eclipse.wst.xsd.ui.internal.common.properties.sections.appinfo.AddExtensionsComponentDialog;
 import org.eclipse.wst.xsd.ui.internal.common.properties.sections.appinfo.DOMExtensionDetailsContentProvider;
 import org.eclipse.wst.xsd.ui.internal.common.properties.sections.appinfo.DOMExtensionItemMenuListener;
 import org.eclipse.wst.xsd.ui.internal.common.properties.sections.appinfo.ExtensionDetailsViewer;
 import org.eclipse.wst.xsd.ui.internal.common.properties.sections.appinfo.ExtensionsSchemasRegistry;
 import org.eclipse.wst.xsd.ui.internal.common.properties.sections.appinfo.SpecificationForExtensionsSchema;
 import org.eclipse.wst.xsd.ui.internal.common.util.Messages;
 import org.eclipse.wst.xsd.ui.internal.editor.XSDEditorCSHelpIds;
 import org.w3c.dom.Element;
 import org.w3c.dom.Node;

 public abstract class AbstractExtensionsSection extends AbstractSection
 {
   protected ExtensionDetailsViewer extensionDetailsViewer;
   protected TreeViewer extensionTreeViewer;
   protected ITreeContentProvider extensionTreeContentProvider;
   protected ILabelProvider extensionTreeLabelProvider;
   protected Label contentLabel;
   protected ISelectionChangedListener elementSelectionChangedListener;
   protected IDocumentChangedNotifier documentChangeNotifier;
   protected INodeAdapter internalNodeAdapter = new InternalNodeAdapter();

   private Composite page;
   protected Button addButton, removeButton;
   private Object prevInput;
   private SpecificationForExtensionsSchema prevCategory;

   /**
    *
    */
   public AbstractExtensionsSection()
   {
     super();
   }

   public void setInput(IWorkbenchPart part, ISelection selection)
   {
     super.setInput(part, selection);
     extensionDetailsViewer.setCommandStack(getCommandStack());
   }

   class InternalNodeAdapter implements INodeAdapter
   {

     public boolean isAdapterForType(Object type)
     {
       // this method should never be called
       // we don't use objects of this class as 'standard' adapters
       return true;
     }

     public void notifyChanged(INodeNotifier notifier, int eventType, Object changedFeature, Object oldValue, Object newValue, int pos)
     {
       boolean isRoot = false;
       if (notifier instanceof Element)
       {
         if (isTreeViewerInputElement((Element)notifier))// TODO
         {
           isRoot = true;
           extensionTreeViewer.refresh(extensionTreeViewer.getInput());
         }
       }
       if (!isRoot)
       {
         extensionTreeViewer.refresh(notifier);
         if ( newValue instanceof Element)
         {
           extensionTreeViewer.expandToLevel(notifier, 1);
           extensionTreeViewer.setSelection(new StructuredSelection(newValue));
         }
       }
     }
   }

   protected boolean isTreeViewerInputElement(Element element)
   {
     return false;
   }

   public void createContents(Composite parent)
   {
     // TODO (cs) add assertion
     if (extensionTreeContentProvider == null)
        return;

     IEditorPart editor = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActiveEditor();
     documentChangeNotifier = (IDocumentChangedNotifier)editor.getAdapter(IDocumentChangedNotifier.class);

     if (documentChangeNotifier != null)
     {
       documentChangeNotifier.addListener(internalNodeAdapter);
     }

     composite = getWidgetFactory().createFlatFormComposite(parent);

     GridLayout gridLayout = new GridLayout();
     gridLayout.marginTop = 0;
     gridLayout.marginBottom = 0;
     gridLayout.numColumns = 1;
     composite.setLayout(gridLayout);

     GridData gridData = new GridData();

     page = getWidgetFactory().createComposite(composite);
     gridLayout = new GridLayout();
     gridLayout.marginTop = 0;
     gridLayout.marginBottom = 0;
     gridLayout.numColumns = 1;
     page.setLayout(gridLayout);

     gridData = new GridData();
     gridData.grabExcessHorizontalSpace = true;
     gridData.grabExcessVerticalSpace = true;
     gridData.verticalAlignment = GridData.FILL;
     gridData.horizontalAlignment = GridData.FILL;
     page.setLayoutData(gridData);

     SashForm sashForm = new SashForm(page, SWT.HORIZONTAL);
     // Try to limit the initial width of the section

     int w = SWT.DEFAULT;
     try
     {
       IWorkbenchPart part = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActivePart();

       // Find the width of the Tabbed Property Sheet's composite excluding the tab
       if (part instanceof PropertySheet)
       {
         PropertySheet sheet = (PropertySheet)part;
         if (sheet.getCurrentPage() instanceof TabbedPropertySheetPage)
         {
           TabbedPropertySheetPage tabbedPage = (TabbedPropertySheetPage)sheet.getCurrentPage();
           Composite targetComposite = null;
           if (tabbedPage.getControl() instanceof Composite)
           {
             Composite c = (Composite)tabbedPage.getControl();
             int length = c.getChildren().length;
             for (int i = 0; i < length; i++)
             {
               Control ctrl = c.getChildren()[i];
               int length2  = (((Composite)ctrl).getChildren()).length;
               for (int j = 0; j < length2; j++ )
               {
                 if ((((Composite)ctrl).getChildren())[j] instanceof ScrolledComposite)
                 {
                   targetComposite = (Composite)(((Composite)ctrl).getChildren())[j];
                   break;
                 }
               }
             }
           }
           if (targetComposite != null)
           {
             w = targetComposite.getSize().x - 20;  // ensure scrollbars don't show
           }
           // The above can be accomplished by the following code
           // but because TabbedPropertyComposite is in an internal package, I will get a discouraged
           // access warning.
           // w = ((TabbedPropertyComposite)(tabbedPage.getControl())).getTabComposite().getSize().x;
         }
       }
     }
     catch(Exception e)
     {
       w = SWT.DEFAULT;
     }
     gridData = new GridData();
     gridData.grabExcessHorizontalSpace = true;
     gridData.grabExcessVerticalSpace = true;
     gridData.verticalAlignment = GridData.FILL;
     gridData.horizontalAlignment = GridData.FILL;
     // The initial size should be set, not the widthHint, which forces the width
     // to remain constant.
     sashForm.setSize(w, SWT.DEFAULT);
     sashForm.setLayoutData(gridData);
     sashForm.setForeground(ColorConstants.white);
     sashForm.setBackground(ColorConstants.white);
     Control[] children = sashForm.getChildren();
     for (int i = 0; i < children.length; i++)
     {
       children[i].setVisible(false);
     }
     Composite leftContent = getWidgetFactory().createComposite(sashForm, SWT.FLAT);
     gridLayout = new GridLayout();
     gridLayout.numColumns = 1;
     leftContent.setLayout(gridLayout);

     Section section = getWidgetFactory().createSection(leftContent, SWT.FLAT | ExpandableComposite.TITLE_BAR);
     section.setText(Messages._UI_LABEL_EXTENSIONS);
     section.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

     Composite tableAndButtonComposite = getWidgetFactory().createComposite(leftContent, SWT.FLAT);
     tableAndButtonComposite.setLayoutData(new GridData(GridData.FILL_BOTH));
     gridLayout = new GridLayout();
     gridLayout.numColumns = 2;
     tableAndButtonComposite.setLayout(gridLayout);

     extensionTreeViewer = new TreeViewer(tableAndButtonComposite, SWT.FLAT | SWT.SINGLE | SWT.H_SCROLL | SWT.V_SCROLL | SWT.LINE_SOLID);
     MenuManager menuManager = new MenuManager();
     extensionTreeViewer.getTree().setMenu(menuManager.createContextMenu(extensionTreeViewer.getTree()));
     menuManager.addMenuListener(new DOMExtensionItemMenuListener(extensionTreeViewer));

     gridLayout = new GridLayout();
     gridLayout.numColumns = 1;
     extensionTreeViewer.getTree().setLayout(gridLayout);
     gridData = new GridData();
     gridData.grabExcessHorizontalSpace = true;
     gridData.grabExcessVerticalSpace = true;
     gridData.verticalAlignment = GridData.FILL;
     gridData.horizontalAlignment = GridData.FILL;

     extensionTreeViewer.getTree().setLayoutData(gridData);
     extensionTreeViewer.setContentProvider(extensionTreeContentProvider);
     extensionTreeViewer.setLabelProvider(extensionTreeLabelProvider);
     elementSelectionChangedListener = new ElementSelectionChangedListener();
     extensionTreeViewer.addSelectionChangedListener(elementSelectionChangedListener);
     extensionTreeViewer.getTree().addMouseTrackListener(new MouseTrackAdapter()
     {
       public void mouseHover(org.eclipse.swt.events.MouseEvent e)
       {
         ISelection selection = extensionTreeViewer.getSelection();
         if (selection instanceof StructuredSelection)
         {
           Object obj = ((StructuredSelection) selection).getFirstElement();
           if (obj instanceof Element)
           {
             Element element = (Element) obj;
             ExtensionsSchemasRegistry registry = getExtensionsSchemasRegistry();
             // ApplicationSpecificSchemaProperties[] properties =
             // registry.getAllApplicationSpecificSchemaProperties();
             // ApplicationSpecificSchemaProperties[] properties =
             // (ApplicationSpecificSchemaProperties[])
             // registry.getAllApplicationSpecificSchemaProperties().toArray(new
             // ApplicationSpecificSchemaProperties[0]);
             List properties = registry.getAllExtensionsSchemasContribution();

             int length = properties.size();
             for (int i = 0; i < length; i++)
             {
               SpecificationForExtensionsSchema current = (SpecificationForExtensionsSchema) properties.get(i);
               if (current.getNamespaceURI().equals(element.getNamespaceURI()))
               {
                 extensionTreeViewer.getTree().setToolTipText(current.getDescription());
                 break;
               }
             }
           }
         }
       }

     });

     PlatformUI.getWorkbench().getHelpSystem().setHelp(extensionTreeViewer.getControl(),
     		XSDEditorCSHelpIds.EXTENSIONS_TAB__EXTENSIONS);

     Composite buttonComposite = getWidgetFactory().createComposite(tableAndButtonComposite, SWT.FLAT);
     //ColumnLayout columnLayout = new ColumnLayout();
     //buttonComposite.setLayout(columnLayout);
     buttonComposite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_BEGINNING));
     gridLayout = new GridLayout();
     gridLayout.marginTop = 0;
     gridLayout.marginBottom = 0;
     gridLayout.numColumns = 1;
     gridLayout.makeColumnsEqualWidth = true;
     buttonComposite.setLayout(gridLayout);

     addButton = getWidgetFactory().createButton(buttonComposite, Messages._UI_ACTION_ADD_WITH_DOTS, SWT.FLAT);
     addButton.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
     addButton.addSelectionListener(this);
     addButton.setToolTipText(Messages._UI_ACTION_ADD_EXTENSION_COMPONENT);
     //addButton.setLayoutData(new ColumnLayoutData(ColumnLayoutData.FILL));
     addButton.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

     PlatformUI.getWorkbench().getHelpSystem().setHelp(addButton,
     		XSDEditorCSHelpIds.EXTENSIONS_TAB__ADD);

     removeButton = getWidgetFactory().createButton(buttonComposite, Messages._UI_ACTION_DELETE, SWT.FLAT);
     removeButton.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
     removeButton.addSelectionListener(this);
     removeButton.setToolTipText(Messages._UI_ACTION_DELETE_EXTENSION_COMPONENT);

     PlatformUI.getWorkbench().getHelpSystem().setHelp(removeButton,
     		XSDEditorCSHelpIds.EXTENSIONS_TAB__DELETE);

     //removeButton.setLayoutData(new ColumnLayoutData(ColumnLayoutData.FILL));

     // TODO (cs) uncomment the up/down button when we have time to implement
     //
     //Button up = getWidgetFactory().createButton(buttonComposite, Messages._UI_LABEL_UP, SWT.FLAT);
     //up.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

     //Button down = getWidgetFactory().createButton(buttonComposite, Messages._UI_LABEL_DOWN, SWT.FLAT);
     //down.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

     Composite rightContent = getWidgetFactory().createComposite(sashForm, SWT.FLAT);
     Section section2 = getWidgetFactory().createSection(rightContent, SWT.FLAT | ExpandableComposite.TITLE_BAR);
     section2.setText(Messages._UI_LABEL_EXTENSION_DETAILS);
     section2.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
     //contentLabel = getWidgetFactory().createLabel(rightContent, "Content");

     Composite testComp = getWidgetFactory().createComposite(rightContent, SWT.FLAT);

     gridLayout = new GridLayout();
     gridLayout.marginTop = 0;
     gridLayout.marginBottom = 0;
     gridLayout.marginLeft = 0;
     gridLayout.marginRight = 0;
     gridLayout.numColumns = 1;
     gridLayout.marginHeight = 3;
     gridLayout.marginWidth = 3;
     rightContent.setLayout(gridLayout);

     gridData = new GridData();
     gridData.grabExcessHorizontalSpace = true;
     gridData.grabExcessVerticalSpace = true;
     gridData.verticalAlignment = GridData.FILL;
     gridData.horizontalAlignment = GridData.FILL;
     rightContent.setLayoutData(gridData);

     gridLayout = new GridLayout();
     gridLayout.marginTop = 0;
     gridLayout.marginLeft = 0;
     gridLayout.marginRight = 0;
     gridLayout.marginBottom = 0;
     gridLayout.marginHeight = 3;
     gridLayout.marginWidth = 3;
     gridLayout.numColumns = 2;
     testComp.setLayout(gridLayout);

     gridData = new GridData();
     gridData.grabExcessHorizontalSpace = true;
     gridData.grabExcessVerticalSpace = true;
     gridData.verticalAlignment = GridData.FILL;
     gridData.horizontalAlignment = GridData.FILL;
     testComp.setLayoutData(gridData);

     createElementContentWidget(testComp);

     int[] weights = { 40, 60 };
     sashForm.setWeights(weights);
   }

   protected void createElementContentWidget(Composite parent)
   {
     extensionDetailsViewer = new ExtensionDetailsViewer(parent, getWidgetFactory());
     extensionDetailsViewer.setContentProvider(new DOMExtensionDetailsContentProvider());
     extensionDetailsViewer.getControl().setLayoutData(new GridData(GridData.FILL_BOTH));

     PlatformUI.getWorkbench().getHelpSystem().setHelp(extensionDetailsViewer.getControl(),
     		XSDEditorCSHelpIds.EXTENSIONS_TAB__EXTENSIONS_DETAILS);
   }


   /*
    * @see org.eclipse.wst.common.ui.properties.internal.provisional.view.ITabbedPropertySection#refresh()
    */
   public void refresh()
   {
     setListenerEnabled(false);
     if (input != null)
     {
       if ( prevInput == input)
     	  return;
       else
     	  prevInput = input;

       Tree tree = extensionTreeViewer.getTree();
       extensionDetailsViewer.setInput(null);
       tree.removeAll();

       addButton.setEnabled(!isReadOnly);

       extensionTreeViewer.setInput(input);
       if (tree.getSelectionCount() == 0 && tree.getItemCount() > 0)
       {
         TreeItem treeItem = tree.getItem(0);
         extensionTreeViewer.setSelection(new StructuredSelection(treeItem.getData()));
       }
       removeButton.setEnabled(tree.getSelectionCount() > 0  && !isReadOnly);
       // Bugzilla 197315.  Make this bulletproof for maintenance release.
       Control detailsViewerControl = extensionDetailsViewer.getControl();
       if (detailsViewerControl != null && !detailsViewerControl.isDisposed())
       {
         detailsViewerControl.setEnabled(!isReadOnly);
       }
     }
     setListenerEnabled(true);
   }

   public Composite getPage()
   {
     return page;
   }

   protected abstract AddExtensionCommand getAddExtensionCommand(Object o);
   protected abstract Command getRemoveExtensionCommand(Object o);
   protected abstract ExtensionsSchemasRegistry getExtensionsSchemasRegistry();

   protected AddExtensionsComponentDialog createAddExtensionsComponentDialog()
   {
     return new AddExtensionsComponentDialog(composite.getShell(), getExtensionsSchemasRegistry());
   }

   public void widgetSelected(SelectionEvent event)
   {
     if (event.widget == addButton)
     {
       ExtensionsSchemasRegistry registry = getExtensionsSchemasRegistry();
       AddExtensionsComponentDialog dialog = createAddExtensionsComponentDialog();

       List properties = registry.getAllExtensionsSchemasContribution();

       dialog.setInput(properties);
       dialog.setBlockOnOpen(true);
       dialog.setPrefStore( getPrefStore() );

       if (prevCategory != null)
     	  dialog.setInitialCategorySelection(prevCategory);

       if (dialog.open() == Window.OK)
       {
         Object newSelection = null;
         Object[] result = dialog.getResult();
         if (result != null)
         {
           SpecificationForExtensionsSchema extensionsSchemaSpec = (SpecificationForExtensionsSchema) result[1];
           AddExtensionCommand addExtensionCommand = getAddExtensionCommand(result[0]);
           if (addExtensionCommand != null)
           {
             addExtensionCommand.setSchemaProperties(extensionsSchemaSpec);
             if (getCommandStack() != null)
             {
               getCommandStack().execute(addExtensionCommand);
               newSelection = addExtensionCommand.getNewObject();
             }
           }
         }
         //refresh();
         if (newSelection != null)
         {
           extensionTreeViewer.setSelection(new StructuredSelection(newSelection));
         }
       }

       prevCategory = dialog.getSelectedCategory();
     }
     else if (event.widget == removeButton)
     {
       ISelection selection = extensionTreeViewer.getSelection();

       if (selection instanceof StructuredSelection)
       {
         Object o = ((StructuredSelection) selection).getFirstElement();
         Command command = getRemoveExtensionCommand(o);
         if (getCommandStack() != null)
         {
           getCommandStack().execute(command);
         }
       }
     }
     else if (event.widget == extensionTreeViewer.getTree())
     {

     }
   }

   // TODO make this one an abstract method. XSDEditor and WSDLEditor should return
   // diferent IpreferenceStore objects
   protected IPreferenceStore getPrefStore() {
 	return null;
   }

   public void widgetDefaultSelected(SelectionEvent event)
   {

   }

   public boolean shouldUseExtraSpace()
   {
     return true;
   }

   public void dispose()
   {
     if (documentChangeNotifier != null)
       documentChangeNotifier.removeListener(internalNodeAdapter);
   }


   Node selectedNode;

   class ElementSelectionChangedListener implements ISelectionChangedListener
   {
     public void selectionChanged(SelectionChangedEvent event)
     {
       boolean isDeleteEnabled = false;
       ISelection selection = event.getSelection();
       if (selection instanceof StructuredSelection)
       {
         StructuredSelection structuredSelection = (StructuredSelection)selection;
         if (structuredSelection.size() > 0)
         {
           Object obj = structuredSelection.getFirstElement();
           if (obj instanceof Node)
           {
             selectedNode = (Node) obj;
             extensionDetailsViewer.setInput(obj);
             isDeleteEnabled = true;
           }
         }
         else
         {
           // if nothing is selected then don't show any details
           //
           extensionDetailsViewer.setInput(null);
         }

         // Upon element selection, the details view populates fine, but there is no vertical scrollbar,
         // so it misleads the user into thinking there are no other attributes available
         // See https://bugs.eclipse.org/bugs/show_bug.cgi?id=174073
         // This is a workaround to force a layout of the tab composite
         IWorkbenchPart part = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActivePart();
         if (part instanceof PropertySheet)
         {
           PropertySheet sheet = (PropertySheet)part;
           if (sheet.getCurrentPage() instanceof TabbedPropertySheetPage)
           {
             TabbedPropertySheetPage tabbedPage = (TabbedPropertySheetPage)sheet.getCurrentPage();
             if (tabbedPage.getControl() instanceof Composite)
             {
               Composite c = (Composite)tabbedPage.getControl();
               Point p = c.getSize();
               // c.layout(true, true) doesn't appear to work.
               // But this forces a relayout:
               c.setSize(p.x, p.y + 1);
               // Change the size back to the original
               c.setSize(p.x, p.y);
             }
           }
         }
       }
       removeButton.setEnabled(isDeleteEnabled && !isReadOnly);
     }
   }

   public ITreeContentProvider getExtensionTreeContentProvider()
   {
     return extensionTreeContentProvider;
   }

   public void setExtensionTreeContentProvider(ITreeContentProvider extensionTreeContentProvider)
   {
     this.extensionTreeContentProvider = extensionTreeContentProvider;
   }

   public ILabelProvider getExtensionTreeLabelProvider()
   {
     return extensionTreeLabelProvider;
   }

   public void setExtensionTreeLabelProvider(ILabelProvider extensionTreeLabelProvider)
   {
     this.extensionTreeLabelProvider = extensionTreeLabelProvider;
   }
 }
	/*******************************************************************************
	* Copyright (c) 2001, 2008 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
	*******************************************************************************/
	package org.eclipse.wst.xsd.ui.internal.common.properties.sections;

	import java.util.List;

	import org.eclipse.draw2d.ColorConstants;
	import org.eclipse.gef.commands.Command;
	import org.eclipse.jface.action.MenuManager;
	import org.eclipse.jface.preference.IPreferenceStore;
	import org.eclipse.jface.viewers.ILabelProvider;
	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.ITreeContentProvider;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.StructuredSelection;
	import org.eclipse.jface.viewers.TreeViewer;
	import org.eclipse.jface.window.Window;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.SashForm;
	import org.eclipse.swt.custom.ScrolledComposite;
	import org.eclipse.swt.events.MouseTrackAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.Point;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Tree;
	import org.eclipse.swt.widgets.TreeItem;
	import org.eclipse.ui.IEditorPart;
	import org.eclipse.ui.IWorkbenchPart;
	import org.eclipse.ui.PlatformUI;
	import org.eclipse.ui.forms.widgets.ExpandableComposite;
	import org.eclipse.ui.forms.widgets.Section;
	import org.eclipse.ui.views.properties.PropertySheet;
	import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage;
	import org.eclipse.wst.sse.core.internal.provisional.INodeAdapter;
	import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier;
	import org.eclipse.wst.xsd.ui.internal.common.commands.AddExtensionCommand;
	import org.eclipse.wst.xsd.ui.internal.common.properties.sections.appinfo.AddExtensionsComponentDialog;
	import org.eclipse.wst.xsd.ui.internal.common.properties.sections.appinfo.DOMExtensionDetailsContentProvider;
	import org.eclipse.wst.xsd.ui.internal.common.properties.sections.appinfo.DOMExtensionItemMenuListener;
	import org.eclipse.wst.xsd.ui.internal.common.properties.sections.appinfo.ExtensionDetailsViewer;
	import org.eclipse.wst.xsd.ui.internal.common.properties.sections.appinfo.ExtensionsSchemasRegistry;
	import org.eclipse.wst.xsd.ui.internal.common.properties.sections.appinfo.SpecificationForExtensionsSchema;
	import org.eclipse.wst.xsd.ui.internal.common.util.Messages;
	import org.eclipse.wst.xsd.ui.internal.editor.XSDEditorCSHelpIds;
	import org.w3c.dom.Element;
	import org.w3c.dom.Node;

	public abstract class AbstractExtensionsSection extends AbstractSection
	{
	protected ExtensionDetailsViewer extensionDetailsViewer;
	protected TreeViewer extensionTreeViewer;
	protected ITreeContentProvider extensionTreeContentProvider;
	protected ILabelProvider extensionTreeLabelProvider;
	protected Label contentLabel;
	protected ISelectionChangedListener elementSelectionChangedListener;
	protected IDocumentChangedNotifier documentChangeNotifier;
	protected INodeAdapter internalNodeAdapter = new InternalNodeAdapter();

	private Composite page;
	protected Button addButton, removeButton;
	private Object prevInput;
	private SpecificationForExtensionsSchema prevCategory;

	/**
	*
	*/
	public AbstractExtensionsSection()
	{
	super();
	}

	public void setInput(IWorkbenchPart part, ISelection selection)
	{
	super.setInput(part, selection);
	extensionDetailsViewer.setCommandStack(getCommandStack());
	}

	class InternalNodeAdapter implements INodeAdapter
	{

	public boolean isAdapterForType(Object type)
	{
	// this method should never be called
	// we don't use objects of this class as 'standard' adapters
	return true;
	}

	public void notifyChanged(INodeNotifier notifier, int eventType, Object changedFeature, Object oldValue, Object newValue, int pos)
	{
	boolean isRoot = false;
	if (notifier instanceof Element)
	{
	if (isTreeViewerInputElement((Element)notifier))// TODO
	{
	isRoot = true;
	extensionTreeViewer.refresh(extensionTreeViewer.getInput());
	}
	}
	if (!isRoot)
	{
	extensionTreeViewer.refresh(notifier);
	if ( newValue instanceof Element)
	{
	extensionTreeViewer.expandToLevel(notifier, 1);
	extensionTreeViewer.setSelection(new StructuredSelection(newValue));
	}
	}
	}
	}

	protected boolean isTreeViewerInputElement(Element element)
	{
	return false;
	}

	public void createContents(Composite parent)
	{
	// TODO (cs) add assertion
	if (extensionTreeContentProvider == null)
	return;

	IEditorPart editor = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActiveEditor();
	documentChangeNotifier = (IDocumentChangedNotifier)editor.getAdapter(IDocumentChangedNotifier.class);

	if (documentChangeNotifier != null)
	{
	documentChangeNotifier.addListener(internalNodeAdapter);
	}

	composite = getWidgetFactory().createFlatFormComposite(parent);

	GridLayout gridLayout = new GridLayout();
	gridLayout.marginTop = 0;
	gridLayout.marginBottom = 0;
	gridLayout.numColumns = 1;
	composite.setLayout(gridLayout);

	GridData gridData = new GridData();

	page = getWidgetFactory().createComposite(composite);
	gridLayout = new GridLayout();
	gridLayout.marginTop = 0;
	gridLayout.marginBottom = 0;
	gridLayout.numColumns = 1;
	page.setLayout(gridLayout);

	gridData = new GridData();
	gridData.grabExcessHorizontalSpace = true;
	gridData.grabExcessVerticalSpace = true;
	gridData.verticalAlignment = GridData.FILL;
	gridData.horizontalAlignment = GridData.FILL;
	page.setLayoutData(gridData);

	SashForm sashForm = new SashForm(page, SWT.HORIZONTAL);
	// Try to limit the initial width of the section

	int w = SWT.DEFAULT;
	try
	{
	IWorkbenchPart part = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActivePart();

	// Find the width of the Tabbed Property Sheet's composite excluding the tab
	if (part instanceof PropertySheet)
	{
	PropertySheet sheet = (PropertySheet)part;
	if (sheet.getCurrentPage() instanceof TabbedPropertySheetPage)
	{
	TabbedPropertySheetPage tabbedPage = (TabbedPropertySheetPage)sheet.getCurrentPage();
	Composite targetComposite = null;
	if (tabbedPage.getControl() instanceof Composite)
	{
	Composite c = (Composite)tabbedPage.getControl();
	int length = c.getChildren().length;
	for (int i = 0; i < length; i++)
	{
	Control ctrl = c.getChildren()[i];
	int length2 = (((Composite)ctrl).getChildren()).length;
	for (int j = 0; j < length2; j++ )
	{
	if ((((Composite)ctrl).getChildren())[j] instanceof ScrolledComposite)
	{
	targetComposite = (Composite)(((Composite)ctrl).getChildren())[j];
	break;
	}
	}
	}
	}
	if (targetComposite != null)
	{
	w = targetComposite.getSize().x - 20; // ensure scrollbars don't show
	}
	// The above can be accomplished by the following code
	// but because TabbedPropertyComposite is in an internal package, I will get a discouraged
	// access warning.
	// w = ((TabbedPropertyComposite)(tabbedPage.getControl())).getTabComposite().getSize().x;
	}
	}
	}
	catch(Exception e)
	{
	w = SWT.DEFAULT;
	}
	gridData = new GridData();
	gridData.grabExcessHorizontalSpace = true;
	gridData.grabExcessVerticalSpace = true;
	gridData.verticalAlignment = GridData.FILL;
	gridData.horizontalAlignment = GridData.FILL;
	// The initial size should be set, not the widthHint, which forces the width
	// to remain constant.
	sashForm.setSize(w, SWT.DEFAULT);
	sashForm.setLayoutData(gridData);
	sashForm.setForeground(ColorConstants.white);
	sashForm.setBackground(ColorConstants.white);
	Control[] children = sashForm.getChildren();
	for (int i = 0; i < children.length; i++)
	{
	children[i].setVisible(false);
	}
	Composite leftContent = getWidgetFactory().createComposite(sashForm, SWT.FLAT);
	gridLayout = new GridLayout();
	gridLayout.numColumns = 1;
	leftContent.setLayout(gridLayout);

	Section section = getWidgetFactory().createSection(leftContent, SWT.FLAT \| ExpandableComposite.TITLE_BAR);
	section.setText(Messages._UI_LABEL_EXTENSIONS);
	section.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	Composite tableAndButtonComposite = getWidgetFactory().createComposite(leftContent, SWT.FLAT);
	tableAndButtonComposite.setLayoutData(new GridData(GridData.FILL_BOTH));
	gridLayout = new GridLayout();
	gridLayout.numColumns = 2;
	tableAndButtonComposite.setLayout(gridLayout);

	extensionTreeViewer = new TreeViewer(tableAndButtonComposite, SWT.FLAT \| SWT.SINGLE \| SWT.H_SCROLL \| SWT.V_SCROLL \| SWT.LINE_SOLID);
	MenuManager menuManager = new MenuManager();
	extensionTreeViewer.getTree().setMenu(menuManager.createContextMenu(extensionTreeViewer.getTree()));
	menuManager.addMenuListener(new DOMExtensionItemMenuListener(extensionTreeViewer));

	gridLayout = new GridLayout();
	gridLayout.numColumns = 1;
	extensionTreeViewer.getTree().setLayout(gridLayout);
	gridData = new GridData();
	gridData.grabExcessHorizontalSpace = true;
	gridData.grabExcessVerticalSpace = true;
	gridData.verticalAlignment = GridData.FILL;
	gridData.horizontalAlignment = GridData.FILL;

	extensionTreeViewer.getTree().setLayoutData(gridData);
	extensionTreeViewer.setContentProvider(extensionTreeContentProvider);
	extensionTreeViewer.setLabelProvider(extensionTreeLabelProvider);
	elementSelectionChangedListener = new ElementSelectionChangedListener();
	extensionTreeViewer.addSelectionChangedListener(elementSelectionChangedListener);
	extensionTreeViewer.getTree().addMouseTrackListener(new MouseTrackAdapter()
	{
	public void mouseHover(org.eclipse.swt.events.MouseEvent e)
	{
	ISelection selection = extensionTreeViewer.getSelection();
	if (selection instanceof StructuredSelection)
	{
	Object obj = ((StructuredSelection) selection).getFirstElement();
	if (obj instanceof Element)
	{
	Element element = (Element) obj;
	ExtensionsSchemasRegistry registry = getExtensionsSchemasRegistry();
	// ApplicationSpecificSchemaProperties[] properties =
	// registry.getAllApplicationSpecificSchemaProperties();
	// ApplicationSpecificSchemaProperties[] properties =
	// (ApplicationSpecificSchemaProperties[])
	// registry.getAllApplicationSpecificSchemaProperties().toArray(new
	// ApplicationSpecificSchemaProperties[0]);
	List properties = registry.getAllExtensionsSchemasContribution();

	int length = properties.size();
	for (int i = 0; i < length; i++)
	{
	SpecificationForExtensionsSchema current = (SpecificationForExtensionsSchema) properties.get(i);
	if (current.getNamespaceURI().equals(element.getNamespaceURI()))
	{
	extensionTreeViewer.getTree().setToolTipText(current.getDescription());
	break;
	}
	}
	}
	}
	}

	});

	PlatformUI.getWorkbench().getHelpSystem().setHelp(extensionTreeViewer.getControl(),
	XSDEditorCSHelpIds.EXTENSIONS_TAB__EXTENSIONS);

	Composite buttonComposite = getWidgetFactory().createComposite(tableAndButtonComposite, SWT.FLAT);
	//ColumnLayout columnLayout = new ColumnLayout();
	//buttonComposite.setLayout(columnLayout);
	buttonComposite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_BEGINNING));
	gridLayout = new GridLayout();
	gridLayout.marginTop = 0;
	gridLayout.marginBottom = 0;
	gridLayout.numColumns = 1;
	gridLayout.makeColumnsEqualWidth = true;
	buttonComposite.setLayout(gridLayout);

	addButton = getWidgetFactory().createButton(buttonComposite, Messages._UI_ACTION_ADD_WITH_DOTS, SWT.FLAT);
	addButton.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
	addButton.addSelectionListener(this);
	addButton.setToolTipText(Messages._UI_ACTION_ADD_EXTENSION_COMPONENT);
	//addButton.setLayoutData(new ColumnLayoutData(ColumnLayoutData.FILL));
	addButton.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	PlatformUI.getWorkbench().getHelpSystem().setHelp(addButton,
	XSDEditorCSHelpIds.EXTENSIONS_TAB__ADD);

	removeButton = getWidgetFactory().createButton(buttonComposite, Messages._UI_ACTION_DELETE, SWT.FLAT);
	removeButton.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
	removeButton.addSelectionListener(this);
	removeButton.setToolTipText(Messages._UI_ACTION_DELETE_EXTENSION_COMPONENT);

	PlatformUI.getWorkbench().getHelpSystem().setHelp(removeButton,
	XSDEditorCSHelpIds.EXTENSIONS_TAB__DELETE);

	//removeButton.setLayoutData(new ColumnLayoutData(ColumnLayoutData.FILL));

	// TODO (cs) uncomment the up/down button when we have time to implement
	//
	//Button up = getWidgetFactory().createButton(buttonComposite, Messages._UI_LABEL_UP, SWT.FLAT);
	//up.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	//Button down = getWidgetFactory().createButton(buttonComposite, Messages._UI_LABEL_DOWN, SWT.FLAT);
	//down.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	Composite rightContent = getWidgetFactory().createComposite(sashForm, SWT.FLAT);
	Section section2 = getWidgetFactory().createSection(rightContent, SWT.FLAT \| ExpandableComposite.TITLE_BAR);
	section2.setText(Messages._UI_LABEL_EXTENSION_DETAILS);
	section2.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	//contentLabel = getWidgetFactory().createLabel(rightContent, "Content");

	Composite testComp = getWidgetFactory().createComposite(rightContent, SWT.FLAT);

	gridLayout = new GridLayout();
	gridLayout.marginTop = 0;
	gridLayout.marginBottom = 0;
	gridLayout.marginLeft = 0;
	gridLayout.marginRight = 0;
	gridLayout.numColumns = 1;
	gridLayout.marginHeight = 3;
	gridLayout.marginWidth = 3;
	rightContent.setLayout(gridLayout);

	gridData = new GridData();
	gridData.grabExcessHorizontalSpace = true;
	gridData.grabExcessVerticalSpace = true;
	gridData.verticalAlignment = GridData.FILL;
	gridData.horizontalAlignment = GridData.FILL;
	rightContent.setLayoutData(gridData);

	gridLayout = new GridLayout();
	gridLayout.marginTop = 0;
	gridLayout.marginLeft = 0;
	gridLayout.marginRight = 0;
	gridLayout.marginBottom = 0;
	gridLayout.marginHeight = 3;
	gridLayout.marginWidth = 3;
	gridLayout.numColumns = 2;
	testComp.setLayout(gridLayout);

	gridData = new GridData();
	gridData.grabExcessHorizontalSpace = true;
	gridData.grabExcessVerticalSpace = true;
	gridData.verticalAlignment = GridData.FILL;
	gridData.horizontalAlignment = GridData.FILL;
	testComp.setLayoutData(gridData);

	createElementContentWidget(testComp);

	int[] weights = { 40, 60 };
	sashForm.setWeights(weights);
	}

	protected void createElementContentWidget(Composite parent)
	{
	extensionDetailsViewer = new ExtensionDetailsViewer(parent, getWidgetFactory());
	extensionDetailsViewer.setContentProvider(new DOMExtensionDetailsContentProvider());
	extensionDetailsViewer.getControl().setLayoutData(new GridData(GridData.FILL_BOTH));

	PlatformUI.getWorkbench().getHelpSystem().setHelp(extensionDetailsViewer.getControl(),
	XSDEditorCSHelpIds.EXTENSIONS_TAB__EXTENSIONS_DETAILS);
	}


	/*
	* @see org.eclipse.wst.common.ui.properties.internal.provisional.view.ITabbedPropertySection#refresh()
	*/
	public void refresh()
	{
	setListenerEnabled(false);
	if (input != null)
	{
	if ( prevInput == input)
	return;
	else
	prevInput = input;

	Tree tree = extensionTreeViewer.getTree();
	extensionDetailsViewer.setInput(null);
	tree.removeAll();

	addButton.setEnabled(!isReadOnly);

	extensionTreeViewer.setInput(input);
	if (tree.getSelectionCount() == 0 && tree.getItemCount() > 0)
	{
	TreeItem treeItem = tree.getItem(0);
	extensionTreeViewer.setSelection(new StructuredSelection(treeItem.getData()));
	}
	removeButton.setEnabled(tree.getSelectionCount() > 0 && !isReadOnly);
	// Bugzilla 197315. Make this bulletproof for maintenance release.
	Control detailsViewerControl = extensionDetailsViewer.getControl();
	if (detailsViewerControl != null && !detailsViewerControl.isDisposed())
	{
	detailsViewerControl.setEnabled(!isReadOnly);
	}
	}
	setListenerEnabled(true);
	}

	public Composite getPage()
	{
	return page;
	}

	protected abstract AddExtensionCommand getAddExtensionCommand(Object o);
	protected abstract Command getRemoveExtensionCommand(Object o);
	protected abstract ExtensionsSchemasRegistry getExtensionsSchemasRegistry();

	protected AddExtensionsComponentDialog createAddExtensionsComponentDialog()
	{
	return new AddExtensionsComponentDialog(composite.getShell(), getExtensionsSchemasRegistry());
	}

	public void widgetSelected(SelectionEvent event)
	{
	if (event.widget == addButton)
	{
	ExtensionsSchemasRegistry registry = getExtensionsSchemasRegistry();
	AddExtensionsComponentDialog dialog = createAddExtensionsComponentDialog();

	List properties = registry.getAllExtensionsSchemasContribution();

	dialog.setInput(properties);
	dialog.setBlockOnOpen(true);
	dialog.setPrefStore( getPrefStore() );

	if (prevCategory != null)
	dialog.setInitialCategorySelection(prevCategory);

	if (dialog.open() == Window.OK)
	{
	Object newSelection = null;
	Object[] result = dialog.getResult();
	if (result != null)
	{
	SpecificationForExtensionsSchema extensionsSchemaSpec = (SpecificationForExtensionsSchema) result[1];
	AddExtensionCommand addExtensionCommand = getAddExtensionCommand(result[0]);
	if (addExtensionCommand != null)
	{
	addExtensionCommand.setSchemaProperties(extensionsSchemaSpec);
	if (getCommandStack() != null)
	{
	getCommandStack().execute(addExtensionCommand);
	newSelection = addExtensionCommand.getNewObject();
	}
	}
	}
	//refresh();
	if (newSelection != null)
	{
	extensionTreeViewer.setSelection(new StructuredSelection(newSelection));
	}
	}

	prevCategory = dialog.getSelectedCategory();
	}
	else if (event.widget == removeButton)
	{
	ISelection selection = extensionTreeViewer.getSelection();

	if (selection instanceof StructuredSelection)
	{
	Object o = ((StructuredSelection) selection).getFirstElement();
	Command command = getRemoveExtensionCommand(o);
	if (getCommandStack() != null)
	{
	getCommandStack().execute(command);
	}
	}
	}
	else if (event.widget == extensionTreeViewer.getTree())
	{

	}
	}

	// TODO make this one an abstract method. XSDEditor and WSDLEditor should return
	// diferent IpreferenceStore objects
	protected IPreferenceStore getPrefStore() {
	return null;
	}

	public void widgetDefaultSelected(SelectionEvent event)
	{

	}

	public boolean shouldUseExtraSpace()
	{
	return true;
	}

	public void dispose()
	{
	if (documentChangeNotifier != null)
	documentChangeNotifier.removeListener(internalNodeAdapter);
	}


	Node selectedNode;

	class ElementSelectionChangedListener implements ISelectionChangedListener
	{
	public void selectionChanged(SelectionChangedEvent event)
	{
	boolean isDeleteEnabled = false;
	ISelection selection = event.getSelection();
	if (selection instanceof StructuredSelection)
	{
	StructuredSelection structuredSelection = (StructuredSelection)selection;
	if (structuredSelection.size() > 0)
	{
	Object obj = structuredSelection.getFirstElement();
	if (obj instanceof Node)
	{
	selectedNode = (Node) obj;
	extensionDetailsViewer.setInput(obj);
	isDeleteEnabled = true;
	}
	}
	else
	{
	// if nothing is selected then don't show any details
	//
	extensionDetailsViewer.setInput(null);
	}

	// Upon element selection, the details view populates fine, but there is no vertical scrollbar,
	// so it misleads the user into thinking there are no other attributes available
	// See https://bugs.eclipse.org/bugs/show_bug.cgi?id=174073
	// This is a workaround to force a layout of the tab composite
	IWorkbenchPart part = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActivePart();
	if (part instanceof PropertySheet)
	{
	PropertySheet sheet = (PropertySheet)part;
	if (sheet.getCurrentPage() instanceof TabbedPropertySheetPage)
	{
	TabbedPropertySheetPage tabbedPage = (TabbedPropertySheetPage)sheet.getCurrentPage();
	if (tabbedPage.getControl() instanceof Composite)
	{
	Composite c = (Composite)tabbedPage.getControl();
	Point p = c.getSize();
	// c.layout(true, true) doesn't appear to work.
	// But this forces a relayout:
	c.setSize(p.x, p.y + 1);
	// Change the size back to the original
	c.setSize(p.x, p.y);
	}
	}
	}
	}
	removeButton.setEnabled(isDeleteEnabled && !isReadOnly);
	}
	}

	public ITreeContentProvider getExtensionTreeContentProvider()
	{
	return extensionTreeContentProvider;
	}

	public void setExtensionTreeContentProvider(ITreeContentProvider extensionTreeContentProvider)
	{
	this.extensionTreeContentProvider = extensionTreeContentProvider;
	}

	public ILabelProvider getExtensionTreeLabelProvider()
	{
	return extensionTreeLabelProvider;
	}

	public void setExtensionTreeLabelProvider(ILabelProvider extensionTreeLabelProvider)
	{
	this.extensionTreeLabelProvider = extensionTreeLabelProvider;
	}
	}