--- /dev/null
+/**********************************************************************
+Copyright (c) 2000, 2002 IBM Corp. and others.
+All rights reserved. This program and the accompanying materials
+are made available under the terms of the Common Public License v1.0
+which accompanies this distribution, and is available at
+http://www.eclipse.org/legal/cpl-v10.html
+
+Contributors:
+ IBM Corporation - Initial implementation
+ Klaus Hartlage - www.eclipseproject.de
+**********************************************************************/
+package net.sourceforge.phpdt.phphelp.actions;
+
+import net.sourceforge.phpeclipse.phpeditor.PHPEditor;
+import net.sourceforge.phpeclipse.phpeditor.php.PHPWordExtractor;
+import org.eclipse.help.IHelp;
+import org.eclipse.help.IHelpResource;
+import org.eclipse.jface.action.IAction;
+import org.eclipse.jface.text.BadLocationException;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.ITextSelection;
+import org.eclipse.jface.text.TextSelection;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.ui.IEditorActionDelegate;
+import org.eclipse.ui.IEditorPart;
+import org.eclipse.ui.IWorkbenchWindow;
+import org.eclipse.ui.actions.ActionDelegate;
+import org.eclipse.ui.help.WorkbenchHelp;
+
+public class PHPEclipseShowContextHelp extends ActionDelegate implements IEditorActionDelegate {
+
+ private IWorkbenchWindow window;
+ private PHPEditor editor;
+
+ public void dispose() {
+ }
+
+ public void init(IWorkbenchWindow window) {
+ this.window = window;
+ }
+
+ public void selectionChanged(IAction action, ISelection selection) {
+ if (!selection.isEmpty()) {
+ if (selection instanceof TextSelection) {
+ action.setEnabled(true);
+ } else if (window.getActivePage() != null && window.getActivePage().getActivePart() != null) {
+ //
+ }
+ }
+ }
+
+ public void run(IAction action) {
+ if (editor == null) {
+ IEditorPart targetEditor = window.getActivePage().getActiveEditor();
+ if (targetEditor != null && (targetEditor instanceof PHPEditor)) {
+ editor = (PHPEditor) targetEditor;
+ }
+ }
+ if (editor != null) {
+ editor.openContextHelp();
+ }
+ }
+
+ public void setActiveEditor(IAction action, IEditorPart targetEditor) {
+ if (targetEditor != null && (targetEditor instanceof PHPEditor)) {
+ editor = (PHPEditor) targetEditor;
+ IDocument doc = editor.getDocumentProvider().getDocument(editor.getEditorInput());
+ ITextSelection selection = (ITextSelection) editor.getSelectionProvider().getSelection();
+ int pos = selection.getOffset();
+ String word = getFunctionName(doc, pos);
+ openContextHelp(word);
+ }
+ }
+
+ public static void openContextHelp(String word) {
+ IHelp help = WorkbenchHelp.getHelpSupport();
+ if (help != null) {
+ IHelpResource helpResource = new PHPFunctionHelpResource(word);
+ WorkbenchHelp.getHelpSupport().displayHelpResource(helpResource);
+ } else {
+ // showMessage(shell, dialogTitle, ActionMessages.getString("Open help not available"), false); //$NON-NLS-1$
+ }
+ }
+
+ private String getFunctionName(IDocument doc, int pos) {
+ Point word = PHPWordExtractor.findWord(doc, pos);
+ if (word != null) {
+ try {
+ return doc.get(word.x, word.y).replace('_', '-');
+ } catch (BadLocationException e) {
+ }
+ }
+ return "";
+ }
+}