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

diff --git a/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/java/hover/BestMatchHover.java b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/java/hover/BestMatchHover.java
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+++ b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/text/java/hover/BestMatchHover.java
@@ -0,0 +1,141 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 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 java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import net.sourceforge.phpdt.ui.PreferenceConstants;
+import net.sourceforge.phpdt.ui.text.java.hover.IJavaEditorTextHover;
+import net.sourceforge.phpeclipse.ui.WebUI;
+//import net.sourceforge.phpeclipse.PHPeclipsePlugin;
+
+import org.eclipse.jface.text.IInformationControlCreator;
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.ITextHover;
+import org.eclipse.jface.text.ITextHoverExtension;
+import org.eclipse.jface.text.ITextViewer;
+import org.eclipse.jface.text.information.IInformationProviderExtension2;
+import org.eclipse.ui.IEditorPart;
+
+/**
+ * Caution: this implementation is a layer breaker and contains some "shortcuts"
+ */
+public class BestMatchHover extends AbstractJavaEditorTextHover implements
+		ITextHoverExtension, IInformationProviderExtension2 {
+
+	private List fTextHoverSpecifications;
+
+	private List fInstantiatedTextHovers;
+
+	private ITextHover fBestHover;
+
+	public BestMatchHover() {
+		installTextHovers();
+	}
+
+	public BestMatchHover(IEditorPart editor) {
+		this();
+		setEditor(editor);
+	}
+
+	/**
+	 * Installs all text hovers.
+	 */
+	private void installTextHovers() {
+
+		// initialize lists - indicates that the initialization happened
+		fTextHoverSpecifications = new ArrayList(2);
+		fInstantiatedTextHovers = new ArrayList(2);
+
+		// populate list
+		JavaEditorTextHoverDescriptor[] hoverDescs = WebUI
+				.getDefault().getJavaEditorTextHoverDescriptors();
+		for (int i = 0; i < hoverDescs.length; i++) {
+			// ensure that we don't add ourselves to the list
+			if (!PreferenceConstants.ID_BESTMATCH_HOVER.equals(hoverDescs[i]
+					.getId()))
+				fTextHoverSpecifications.add(hoverDescs[i]);
+		}
+	}
+
+	private void checkTextHovers() {
+		if (fTextHoverSpecifications.size() == 0)
+			return;
+
+		for (Iterator iterator = new ArrayList(fTextHoverSpecifications)
+				.iterator(); iterator.hasNext();) {
+			JavaEditorTextHoverDescriptor spec = (JavaEditorTextHoverDescriptor) iterator
+					.next();
+
+			IJavaEditorTextHover hover = spec.createTextHover();
+			if (hover != null) {
+				hover.setEditor(getEditor());
+				addTextHover(hover);
+				fTextHoverSpecifications.remove(spec);
+			}
+		}
+	}
+
+	protected void addTextHover(ITextHover hover) {
+		if (!fInstantiatedTextHovers.contains(hover))
+			fInstantiatedTextHovers.add(hover);
+	}
+
+	/*
+	 * @see ITextHover#getHoverInfo(ITextViewer, IRegion)
+	 */
+	public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {
+
+		checkTextHovers();
+		fBestHover = null;
+
+		if (fInstantiatedTextHovers == null)
+			return null;
+
+		for (Iterator iterator = fInstantiatedTextHovers.iterator(); iterator
+				.hasNext();) {
+			ITextHover hover = (ITextHover) iterator.next();
+
+			String s = hover.getHoverInfo(textViewer, hoverRegion);
+			if (s != null && s.trim().length() > 0) {
+				fBestHover = hover;
+				return s;
+			}
+		}
+
+		return null;
+	}
+
+	/*
+	 * @see org.eclipse.jface.text.ITextHoverExtension#getHoverControlCreator()
+	 * @since 3.0
+	 */
+	public IInformationControlCreator getHoverControlCreator() {
+		if (fBestHover instanceof ITextHoverExtension)
+			return ((ITextHoverExtension) fBestHover).getHoverControlCreator();
+
+		return null;
+	}
+
+	/*
+	 * @see org.eclipse.jface.text.information.IInformationProviderExtension2#getInformationPresenterControlCreator()
+	 * @since 3.0
+	 */
+	public IInformationControlCreator getInformationPresenterControlCreator() {
+		if (fBestHover instanceof IInformationProviderExtension2)
+			return ((IInformationProviderExtension2) fBestHover)
+					.getInformationPresenterControlCreator();
+
+		return null;
+	}
+}
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