X-Git-Url: http://secure.phpeclipse.com

diff --git a/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/java/hover/JavaInformationProvider.java b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/java/hover/JavaInformationProvider.java
new file mode 100644
index 0000000..a8f3a8e
--- /dev/null
+++ b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/java/hover/JavaInformationProvider.java
@@ -0,0 +1,131 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2004 IBM Corporation 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 API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpdt.internal.ui.text.java.hover;
+
+import net.sourceforge.phpdt.internal.ui.text.JavaWordFinder;
+import net.sourceforge.phpdt.ui.text.java.hover.IJavaEditorTextHover;
+
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.ITextViewer;
+import org.eclipse.jface.text.information.IInformationProvider;
+import org.eclipse.ui.IEditorPart;
+import org.eclipse.ui.IPartListener;
+import org.eclipse.ui.IPerspectiveDescriptor;
+import org.eclipse.ui.IWorkbenchPage;
+import org.eclipse.ui.IWorkbenchPart;
+import org.eclipse.ui.IWorkbenchWindow;
+
+public class JavaInformationProvider implements IInformationProvider {
+
+	class EditorWatcher implements IPartListener {
+
+		/**
+		 * @see IPartListener#partOpened(IWorkbenchPart)
+		 */
+		public void partOpened(IWorkbenchPart part) {
+		}
+
+		/**
+		 * @see IPartListener#partDeactivated(IWorkbenchPart)
+		 */
+		public void partDeactivated(IWorkbenchPart part) {
+		}
+
+		/**
+		 * @see IPartListener#partClosed(IWorkbenchPart)
+		 */
+		public void partClosed(IWorkbenchPart part) {
+			if (part == fEditor) {
+				fEditor.getSite().getWorkbenchWindow().getPartService()
+						.removePartListener(fPartListener);
+				fPartListener = null;
+			}
+		}
+
+		/**
+		 * @see IPartListener#partActivated(IWorkbenchPart)
+		 */
+		public void partActivated(IWorkbenchPart part) {
+			update();
+		}
+
+		public void partBroughtToTop(IWorkbenchPart part) {
+			update();
+		}
+	}
+
+	protected IEditorPart fEditor;
+
+	protected IPartListener fPartListener;
+
+	protected String fCurrentPerspective;
+
+	protected IJavaEditorTextHover fImplementation;
+
+	public JavaInformationProvider(IEditorPart editor) {
+
+		fEditor = editor;
+
+		if (fEditor != null) {
+
+			fPartListener = new EditorWatcher();
+			IWorkbenchWindow window = fEditor.getSite().getWorkbenchWindow();
+			window.getPartService().addPartListener(fPartListener);
+
+			update();
+		}
+	}
+
+	protected void update() {
+
+		IWorkbenchWindow window = fEditor.getSite().getWorkbenchWindow();
+		IWorkbenchPage page = window.getActivePage();
+		if (page != null) {
+
+			IPerspectiveDescriptor perspective = page.getPerspective();
+			if (perspective != null) {
+				String perspectiveId = perspective.getId();
+
+				if (fCurrentPerspective == null
+						|| fCurrentPerspective != perspectiveId) {
+					fCurrentPerspective = perspectiveId;
+
+					fImplementation = new JavaTypeHover();
+					fImplementation.setEditor(fEditor);
+				}
+			}
+		}
+	}
+
+	/*
+	 * @see IInformationProvider#getSubject(ITextViewer, int)
+	 */
+	public IRegion getSubject(ITextViewer textViewer, int offset) {
+
+		if (textViewer != null)
+			return JavaWordFinder.findWord(textViewer.getDocument(), offset);
+
+		return null;
+	}
+
+	/*
+	 * @see IInformationProvider#getInformation(ITextViewer, IRegion)
+	 */
+	public String getInformation(ITextViewer textViewer, IRegion subject) {
+		if (fImplementation != null) {
+			String s = fImplementation.getHoverInfo(textViewer, subject);
+			if (s != null && s.trim().length() > 0)
+				return s;
+		}
+
+		return null;
+	}
+}