| /******************************************************************************* |
| * Copyright (c) 2008, 2010 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.sse.ui.internal.handlers; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.eclipse.core.commands.AbstractHandler; |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.ITextSelection; |
| import org.eclipse.jface.text.ITypedRegion; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.ui.IEditorPart; |
| import org.eclipse.ui.IFileEditorInput; |
| import org.eclipse.ui.handlers.HandlerUtil; |
| import org.eclipse.ui.texteditor.ITextEditor; |
| import org.eclipse.wst.sse.ui.internal.ExtendedConfigurationBuilder; |
| import org.eclipse.wst.sse.ui.internal.SSEUIMessages; |
| import org.eclipse.wst.sse.ui.internal.search.FindOccurrencesProcessor; |
| import org.eclipse.wst.sse.ui.internal.util.PlatformStatusLineUtil; |
| |
| public abstract class FindOccurrencesHandler extends AbstractHandler { |
| |
| public Object execute(ExecutionEvent event) throws ExecutionException { |
| IEditorPart editorPart = HandlerUtil.getActiveEditor(event); |
| ITextEditor textEditor = null; |
| if (editorPart instanceof ITextEditor) |
| textEditor = (ITextEditor) editorPart; |
| else { |
| Object o = editorPart.getAdapter(ITextEditor.class); |
| if (o != null) |
| textEditor = (ITextEditor) o; |
| } |
| boolean okay = false; |
| if (textEditor != null) { |
| IDocument document = textEditor.getDocumentProvider().getDocument(textEditor.getEditorInput()); |
| if (document != null) { |
| ITextSelection textSelection = getTextSelection(textEditor); |
| FindOccurrencesProcessor findOccurrenceProcessor = getProcessorForCurrentSelection(document, textSelection); |
| if (findOccurrenceProcessor != null) { |
| if (textEditor.getEditorInput() instanceof IFileEditorInput) { |
| IFile file = ((IFileEditorInput) textEditor.getEditorInput()).getFile(); |
| okay = findOccurrenceProcessor.findOccurrences(document, textSelection, file); |
| } |
| } |
| } |
| } |
| if (okay) { |
| // clear status message |
| PlatformStatusLineUtil.clearStatusLine(); |
| } |
| else { |
| String errorMessage = SSEUIMessages.FindOccurrencesActionProvider_0; //$NON-NLS-1$ |
| PlatformStatusLineUtil.displayErrorMessage(errorMessage); |
| PlatformStatusLineUtil.addOneTimeClearListener(); |
| } |
| return null; |
| } |
| |
| /** |
| * Get the appropriate find occurrences processor |
| * |
| * @param document - |
| * assumes not null |
| * @param textSelection |
| * @return |
| */ |
| private FindOccurrencesProcessor getProcessorForCurrentSelection(IDocument document, ITextSelection textSelection) { |
| // check if we have an action that's enabled on the current partition |
| ITypedRegion tr = getPartition(document, textSelection); |
| String partition = tr != null ? tr.getType() : ""; //$NON-NLS-1$ |
| |
| Iterator it = getProcessors().iterator(); |
| FindOccurrencesProcessor processor = null; |
| while (it.hasNext()) { |
| processor = (FindOccurrencesProcessor) it.next(); |
| // we just choose the first action that can handle the partition |
| if (processor.enabledForParitition(partition)) |
| return processor; |
| } |
| |
| List extendedFindOccurrencesProcessors = ExtendedConfigurationBuilder.getInstance().getConfigurations(FindOccurrencesProcessor.class.getName(), partition); |
| for (int i = 0; i < extendedFindOccurrencesProcessors.size(); i++) { |
| Object o = extendedFindOccurrencesProcessors.get(i); |
| if (o instanceof FindOccurrencesProcessor) { |
| /* |
| * We just choose the first registered processor that |
| * explicitly says it can handle the partition |
| */ |
| processor = (FindOccurrencesProcessor) o; |
| if (processor.enabledForParitition(partition)) |
| return processor; |
| } |
| } |
| return null; |
| } |
| |
| private ITypedRegion getPartition(IDocument document, ITextSelection textSelection) { |
| ITypedRegion region = null; |
| if (textSelection != null) { |
| try { |
| region = document.getPartition(textSelection.getOffset()); |
| } |
| catch (BadLocationException e) { |
| region = null; |
| } |
| } |
| return region; |
| } |
| |
| private ITextSelection getTextSelection(ITextEditor textEditor) { |
| ITextSelection textSelection = null; |
| ISelection selection = textEditor.getSelectionProvider().getSelection(); |
| if (selection instanceof ITextSelection && !selection.isEmpty()) { |
| textSelection = (ITextSelection) selection; |
| } |
| return textSelection; |
| } |
| |
| abstract protected List getProcessors(); |
| } |