[jbosstools-commits] JBoss Tools SVN: r30123 - trunk/bpel/plugins/org.eclipse.bpel.common.ui/src/org/eclipse/bpel/common/ui/tray.

Author: bbrodt Date: 2011-03-29 17:16:05 -0400 (Tue, 29 Mar 2011) New Revision: 30123 Modified: trunk/bpel/plugins/org.eclipse.bpel.common.ui/src/org/eclipse/bpel/common/ui/tray/MultiViewerSelectionProvider.java Log: https://issues.jboss.org/browse/JBIDE-8541 Applied patch from Bugzilla 341200 Modified: trunk/bpel/plugins/org.eclipse.bpel.common.ui/src/org/eclipse/bpel/common/ui/tray/MultiViewerSelectionProvider.java =================================================================== --- trunk/bpel/plugins/org.eclipse.bpel.common.ui/src/org/eclipse/bpel/common/ui/tray/MultiViewerSelectionProvider.java 2011-03-29 21:08:44 UTC (rev 30122) +++ trunk/bpel/plugins/org.eclipse.bpel.common.ui/src/org/eclipse/bpel/common/ui/tray/MultiViewerSelectionProvider.java 2011-03-29 21:16:05 UTC (rev 30123) @@ -1,12 +1,9 @@ /******************************************************************************* - * Copyright (c) 2005 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 + * Copyright (c) 2005 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.bpel.common.ui.tray; @@ -18,6 +15,7 @@ import org.eclipse.gef.EditPart; import org.eclipse.gef.EditPartViewer; +import org.eclipse.jface.viewers.IPostSelectionProvider; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.ISelectionProvider; @@ -26,179 +24,196 @@ import org.eclipse.jface.viewers.StructuredSelection; /** - * @author IBM, Original Contribution. + * @author IBM, Original Contribution. * @author Michal Chmielewski (michal.chmielewski(a)oracle.com) * @date Jun 5, 2007 - * + * */ -public class MultiViewerSelectionProvider implements ISelectionProvider { +public class MultiViewerSelectionProvider implements ISelectionProvider, IPostSelectionProvider { - static ISelectionChangedListener[] EMPTY_LISTENERS = {}; - - protected List<EditPartViewer> viewers = new ArrayList<EditPartViewer>(); - protected List<ISelectionChangedListener> listeners; - protected boolean changingSelection = false; - protected boolean broadcastingSelectionChange = false; - protected IStructuredSelection cachedSelection; - - /** - * Brand new shiny MultiViewerSelectionProvider - * @param viewer - */ - - public MultiViewerSelectionProvider(EditPartViewer viewer) { - this(); - addViewer(viewer); - } - - /** - * Brand new shiny MultiViewerSelectionProvider - */ - - public MultiViewerSelectionProvider() { - this.listeners = new ArrayList<ISelectionChangedListener>(); - } - - /** - * @see org.eclipse.jface.viewers.ISelectionProvider#addSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener) - */ - public void addSelectionChangedListener(ISelectionChangedListener listener) { - listeners.add(listener); - } + static ISelectionChangedListener[] EMPTY_LISTENERS = {}; - - /** - * @see org.eclipse.jface.viewers.ISelectionProvider#removeSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener) - */ - public void removeSelectionChangedListener(ISelectionChangedListener listener) { - listeners.remove(listener); - } + protected List<EditPartViewer> viewers = new ArrayList<EditPartViewer>(); - /** - * Add the viewer to the list of viewers that are listening for selection changes. - * - * @param viewer - */ - - public void addViewer(EditPartViewer viewer) { - viewers.add(viewer); - viewer.addSelectionChangedListener(new ISelectionChangedListener() { - public void selectionChanged(SelectionChangedEvent event) { - if (changingSelection) { - return; - } - setSelection(event.getSelection()); - } - }); - } - - - /** - * Get the current selection - * - * @see org.eclipse.jface.viewers.ISelectionProvider#getSelection() - */ - - public ISelection getSelection() { - if (cachedSelection == null) { - List<EditPartViewer> result = new ArrayList<EditPartViewer>(); - for(EditPartViewer next : viewers) { - result.addAll( next.getSelectedEditParts() ); - } - cachedSelection = calculateSelection(new StructuredSelection(result)); - } - return cachedSelection; - } + protected List<ISelectionChangedListener> listeners = new ArrayList<ISelectionChangedListener>(); - /** - * @see org.eclipse.jface.viewers.ISelectionProvider#setSelection(org.eclipse.jface.viewers.ISelection) - */ - public void setSelection(ISelection selection) { - if (selection instanceof IStructuredSelection == false) { - return; - } - - cachedSelection = calculateSelection( (IStructuredSelection) selection); - internalSetSelection(cachedSelection); - fireSelectionChanged(this, cachedSelection); - } - - protected void fireSelectionChanged(ISelectionProvider provider, ISelection selection) { - SelectionChangedEvent event = new SelectionChangedEvent(provider, selection); - try { - broadcastingSelectionChange = true; - for(ISelectionChangedListener listener : this.listeners.toArray( EMPTY_LISTENERS ) ) { - listener.selectionChanged(event); - } - } finally { - broadcastingSelectionChange = false; - } - } - - protected IStructuredSelection calculateSelection (IStructuredSelection baseSelection) { - - List<EditPart> result = new ArrayList<EditPart>(); - for(EditPartViewer viewer : viewers) { - - Map<Object,EditPart> registry = viewer.getEditPartRegistry(); - - for( Object n : baseSelection.toArray() ) { - EditPart part = (EditPart) n; - Object model = part.getModel(); - EditPart viewerEditPart = registry.get(model); - if (viewerEditPart != null) { - result.add(viewerEditPart); - } - } - } - if (result.isEmpty()) { - return StructuredSelection.EMPTY; - } - return new StructuredSelection(result); - } - - // TODO: try getting rid of the isEmpty() check here and in the same - // place in AdaptingSelectionProvider. - - // Set selection to each of the viewers and make sure we ignore callbacks - - protected void internalSetSelection (IStructuredSelection selection) { - if (selection == null || selection.isEmpty() ) { - return; - } - - try { - changingSelection = true; - - for(EditPartViewer viewer : viewers) { - - Map<Object,EditPart> registry = viewer.getEditPartRegistry(); - List<EditPart> newList = new ArrayList<EditPart>(); - Set<EditPart> newSet = new HashSet<EditPart>(); - - for(Object n : selection.toArray() ) { - EditPart part = (EditPart) n; - Object model = part.getModel(); - EditPart viewerEditPart = registry.get(model); - if (viewerEditPart != null && newSet.add(viewerEditPart)) { - newList.add(viewerEditPart); - } - } - viewer.setSelection(new StructuredSelection(newList)); - } - } finally { - changingSelection = false; - } - } - - /** - * Answer true if we are broadcasting a selection change. - * - * @return answer true if we are broadcasting selection change. - */ - - public boolean isBroadcastingSelectionChange() { - return broadcastingSelectionChange; - } + protected List<ISelectionChangedListener> postListeners = new ArrayList<ISelectionChangedListener>(); + + protected boolean changingSelection = false; + + protected boolean broadcastingSelectionChange = false; + + protected IStructuredSelection cachedSelection; + + /** + * Brand new shiny MultiViewerSelectionProvider + */ + public MultiViewerSelectionProvider() { + // Empty constructor + } + + /** + * Brand new shiny MultiViewerSelectionProvider + * + * @param viewer + */ + public MultiViewerSelectionProvider(EditPartViewer viewer) { + addViewer(viewer); + } + + /** + * @see org.eclipse.jface.viewers.ISelectionProvider#addSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener) + */ + public void addSelectionChangedListener(ISelectionChangedListener listener) { + listeners.add(listener); + } + + /** + * @see org.eclipse.jface.viewers.ISelectionProvider#removeSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener) + */ + public void removeSelectionChangedListener(ISelectionChangedListener listener) { + listeners.remove(listener); + } + + /** + * @see org.eclipse.jface.viewers.IPostSelectionProvider#addPostSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener) + */ + public void addPostSelectionChangedListener(ISelectionChangedListener listener) { + postListeners.add(listener); + } + + /** + * @see org.eclipse.jface.viewers.IPostSelectionProvider#removePostSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener) + */ + public void removePostSelectionChangedListener(ISelectionChangedListener listener) { + postListeners.remove(listener); + } + + /** + * Add the viewer to the list of viewers that are listening for selection changes. + * + * @param viewer + */ + public void addViewer(EditPartViewer viewer) { + viewers.add(viewer); + viewer.addSelectionChangedListener(new ISelectionChangedListener() { + public void selectionChanged(SelectionChangedEvent event) { + if (changingSelection) { + return; + } + setSelection(event.getSelection()); + } + }); + } + + /** + * Get the current selection + * + * @see org.eclipse.jface.viewers.ISelectionProvider#getSelection() + */ + public ISelection getSelection() { + if (cachedSelection == null) { + List<EditPartViewer> result = new ArrayList<EditPartViewer>(); + for (EditPartViewer next : viewers) { + result.addAll(next.getSelectedEditParts()); + } + cachedSelection = calculateSelection(new StructuredSelection(result)); + } + return cachedSelection; + } + + /** + * @see org.eclipse.jface.viewers.ISelectionProvider#setSelection(org.eclipse.jface.viewers.ISelection) + */ + public void setSelection(ISelection selection) { + if (selection instanceof IStructuredSelection == false) { + return; + } + + cachedSelection = calculateSelection((IStructuredSelection) selection); + internalSetSelection(cachedSelection); + fireSelectionChanged(this, cachedSelection); + } + + protected void fireSelectionChanged(ISelectionProvider provider, ISelection selection) { + SelectionChangedEvent event = new SelectionChangedEvent(provider, selection); + try { + broadcastingSelectionChange = true; + for (ISelectionChangedListener listener : this.listeners.toArray(EMPTY_LISTENERS)) { + listener.selectionChanged(event); + } + for (ISelectionChangedListener listener : this.postListeners.toArray(EMPTY_LISTENERS)) { + listener.selectionChanged(event); + } + } finally { + broadcastingSelectionChange = false; + } + } + + protected IStructuredSelection calculateSelection(IStructuredSelection baseSelection) { + + List<EditPart> result = new ArrayList<EditPart>(); + for (EditPartViewer viewer : viewers) { + + Map<Object, EditPart> registry = viewer.getEditPartRegistry(); + + for (Object n : baseSelection.toArray()) { + EditPart part = (EditPart) n; + Object model = part.getModel(); + EditPart viewerEditPart = registry.get(model); + if (viewerEditPart != null) { + result.add(viewerEditPart); + } + } + } + if (result.isEmpty()) { + return StructuredSelection.EMPTY; + } + return new StructuredSelection(result); + } + + // TODO: try getting rid of the isEmpty() check here and in the same + // place in AdaptingSelectionProvider. + + // Set selection to each of the viewers and make sure we ignore callbacks + + protected void internalSetSelection(IStructuredSelection selection) { + if (selection == null || selection.isEmpty()) { + return; + } + + try { + changingSelection = true; + + for (EditPartViewer viewer : viewers) { + + Map<Object, EditPart> registry = viewer.getEditPartRegistry(); + List<EditPart> newList = new ArrayList<EditPart>(); + Set<EditPart> newSet = new HashSet<EditPart>(); + + for (Object n : selection.toArray()) { + EditPart part = (EditPart) n; + Object model = part.getModel(); + EditPart viewerEditPart = registry.get(model); + if (viewerEditPart != null && newSet.add(viewerEditPart)) { + newList.add(viewerEditPart); + } + } + viewer.setSelection(new StructuredSelection(newList)); + } + } finally { + changingSelection = false; + } + } + + /** + * Answer true if we are broadcasting a selection change. + * + * @return answer true if we are broadcasting selection change. + */ + + public boolean isBroadcastingSelectionChange() { + return broadcastingSelectionChange; + } }