+++ /dev/null
-/*******************************************************************************
- * 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.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 = PHPeclipsePlugin
- .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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