MtextOutlinePage.java

/**
 * <copyright>
 * </copyright>
 *
 * 
 */
package org.feature.multi.perspective.mapping.viewmapping.resource.mtext.ui;

/**
 * Simple Outline Page using the ReflectiveItemAdapters provided by EMF
 */
public class MtextOutlinePage extends org.eclipse.ui.part.Page implements org.eclipse.jface.viewers.ISelectionProvider, org.eclipse.jface.viewers.ISelectionChangedListener, org.eclipse.ui.views.contentoutline.IContentOutlinePage {
	
	public final static String CONTEXT_MENU_ID = "org.feature.multi.perspective.mapping.viewmapping.resource.mtext.ui.outlinecontext";
	
	/**
	 * The auto expand level determines the depth to which the outline tree is
	 * expanded by default.
	 */
	public static int AUTO_EXPAND_LEVEL = 2;
	
	/**
	 * The provider for the resource that is displayed in the outline page. Normally
	 * this is the current editor.
	 */
	private org.feature.multi.perspective.mapping.viewmapping.resource.mtext.IMtextResourceProvider resourceProvider;
	private org.feature.multi.perspective.mapping.viewmapping.resource.mtext.ui.MtextOutlinePageTreeViewer treeViewer;
	private org.eclipse.core.runtime.ListenerList selectionChangedListeners = new org.eclipse.core.runtime.ListenerList();
	
	public MtextOutlinePage(org.feature.multi.perspective.mapping.viewmapping.resource.mtext.IMtextResourceProvider resourceProvider) {
		super();
		this.resourceProvider = resourceProvider;
	}
	
	public void createControl(org.eclipse.swt.widgets.Composite parent) {
		treeViewer = new org.feature.multi.perspective.mapping.viewmapping.resource.mtext.ui.MtextOutlinePageTreeViewer(parent, org.eclipse.swt.SWT.MULTI | org.eclipse.swt.SWT.H_SCROLL | org.eclipse.swt.SWT.V_SCROLL);
		Object[] listeners = selectionChangedListeners.getListeners();
		for (int i = 0; i < listeners.length; ++i) {
			org.eclipse.jface.viewers.ISelectionChangedListener l = (org.eclipse.jface.viewers.ISelectionChangedListener) listeners[i];
			treeViewer.addSelectionChangedListener(l);
		}
		selectionChangedListeners.clear();
		org.eclipse.emf.edit.provider.ComposedAdapterFactory adapterFactory = new org.eclipse.emf.edit.provider.ComposedAdapterFactory(org.eclipse.emf.edit.provider.ComposedAdapterFactory.Descriptor.Registry.INSTANCE);
		adapterFactory.addAdapterFactory(new org.eclipse.emf.edit.provider.resource.ResourceItemProviderAdapterFactory());
		adapterFactory.addAdapterFactory(new org.eclipse.emf.ecore.provider.EcoreItemProviderAdapterFactory());
		adapterFactory.addAdapterFactory(new org.eclipse.emf.edit.provider.ReflectiveItemProviderAdapterFactory());
		org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider contentProvider = new org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider(adapterFactory);
		treeViewer.setAutoExpandLevel(AUTO_EXPAND_LEVEL);
		treeViewer.setContentProvider(contentProvider);
		treeViewer.setLabelProvider(new org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider(adapterFactory));
		org.eclipse.emf.ecore.resource.Resource resource = resourceProvider.getResource();
		treeViewer.setInput(resource);
		if (resource != null) {
			// Select the root object in the view.
			treeViewer.setSelection(new org.eclipse.jface.viewers.StructuredSelection(resource), true);
		}
		treeViewer.setComparator(new org.feature.multi.perspective.mapping.viewmapping.resource.mtext.ui.MtextOutlinePageTreeViewerComparator());
		createContextMenu();
		createActions();
	}
	
	private void createContextMenu() {
		// create menu manager
		org.eclipse.jface.action.MenuManager menuManager = new org.eclipse.jface.action.MenuManager();
		menuManager.setRemoveAllWhenShown(true);
		menuManager.addMenuListener(new org.eclipse.jface.action.IMenuListener() {
			public void menuAboutToShow(org.eclipse.jface.action.IMenuManager manager) {
				fillContextMenu(manager);
			}
		});
		// create menu
		org.eclipse.swt.widgets.Menu menu = menuManager.createContextMenu(treeViewer.getControl());
		treeViewer.getControl().setMenu(menu);
		// register menu for extension
		getSite().registerContextMenu("org.feature.multi.perspective.mapping.viewmapping.resource.mtext.ui.outlinecontext", menuManager, treeViewer);
	}
	
	private void fillContextMenu(org.eclipse.jface.action.IMenuManager manager) {
		manager.add(new org.eclipse.jface.action.GroupMarker(org.eclipse.ui.IWorkbenchActionConstants.MB_ADDITIONS));
	}
	
	private void createActions() {
		org.eclipse.ui.part.IPageSite site = getSite();
		org.eclipse.ui.IActionBars actionBars = site.getActionBars();
		org.eclipse.jface.action.IToolBarManager toolBarManager = actionBars.getToolBarManager();
		java.util.List<org.eclipse.jface.action.IAction> actions = new org.feature.multi.perspective.mapping.viewmapping.resource.mtext.ui.MtextOutlinePageActionProvider().getActions(treeViewer);
		for (org.eclipse.jface.action.IAction action : actions) {
			toolBarManager.add(action);
		}
	}
	
	public void addSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener listener) {
		if (getTreeViewer() == null) {
			selectionChangedListeners.add(listener);
		} else {
			getTreeViewer().addSelectionChangedListener(listener);
		}
	}
	
	public org.eclipse.swt.widgets.Control getControl() {
		if (treeViewer == null) {
			return null;
		}
		return treeViewer.getControl();
	}
	
	public org.eclipse.jface.viewers.ISelection getSelection() {
		if (treeViewer == null) {
			return org.eclipse.jface.viewers.StructuredSelection.EMPTY;
		}
		return treeViewer.getSelection();
	}
	
	/**
	 * Returns this page's tree viewer.
	 * 
	 * @return this page's tree viewer, or <code>null</code> if
	 * <code>createControl</code> has not been called yet
	 */
	protected org.eclipse.jface.viewers.TreeViewer getTreeViewer() {
		return treeViewer;
	}
	
	public void init(org.eclipse.ui.part.IPageSite pageSite) {
		super.init(pageSite);
	}
	
	public void removeSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener listener) {
		if (getTreeViewer() == null) {
			selectionChangedListeners.remove(listener);
		} else {
			getTreeViewer().removeSelectionChangedListener(listener);
		}
	}
	
	public void selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent event) {
		if (getTreeViewer() != null) {
			getTreeViewer().setSelection(event.getSelection(), true);
		}
	}
	
	/**
	 * Sets focus to a part in the page.
	 */
	public void setFocus() {
		treeViewer.getControl().setFocus();
	}
	
	public void setSelection(org.eclipse.jface.viewers.ISelection selection) {
		if (treeViewer != null) {
			treeViewer.setSelection(selection);
		}
	}
	
}