/*******************************************************************************
* Copyright (c) 2007-2012 Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.common.text.ext.hyperlink;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.search.IJavaSearchConstants;
import org.eclipse.jdt.core.search.IJavaSearchScope;
import org.eclipse.jdt.core.search.SearchEngine;
import org.eclipse.jdt.core.search.SearchMatch;
import org.eclipse.jdt.core.search.SearchParticipant;
import org.eclipse.jdt.core.search.SearchPattern;
import org.eclipse.jdt.core.search.SearchRequestor;
import org.eclipse.jdt.ui.JavaUI;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IRegion;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IStorageEditorInput;
import org.eclipse.ui.IWorkbenchPage;
import org.jboss.tools.common.text.ext.ExtensionsPlugin;
import org.jboss.tools.common.text.ext.util.StructuredModelWrapper;
import org.jboss.tools.common.text.ext.util.Utils;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
/**
* @author Jeremy
*/
public abstract class ClassMethodHyperlink extends AbstractHyperlink {
protected abstract String getMethodName(IRegion region);
protected abstract String getClassName(IRegion region);
/**
* @see com.ibm.sse.editor.AbstractHyperlink#doHyperlink(org.eclipse.jface.text.IRegion)
*/
protected void doHyperlink(IRegion region) {
try {
String className = getClassName(region);
String methodName = getMethodName(region);
IJavaElement classMethod = null;
if (className != null && className.trim().length() > 0) {
classMethod = searchForClassMethod(className, methodName);
}
if (classMethod != null) {
IEditorPart part = JavaUI.openInEditor(classMethod);
if (part != null) {
JavaUI.revealInEditor(part, classMethod);
}
else {
// could not open editor
openFileFailed();
}
} else {
openFileFailed();
}
} catch (CoreException x) {
openFileFailed();
}
}
protected IJavaElement searchForClassMethod(IJavaProject javaProject,
String className, String methodName) {
// Get the search pattern
SearchPattern pattern = SearchPattern
.createPattern(
className + "." + methodName, IJavaSearchConstants.METHOD, IJavaSearchConstants.DECLARATIONS, SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE); //$NON-NLS-1$
// Get the search scope
IJavaSearchScope scope = SearchEngine
.createJavaSearchScope(new IJavaElement[] { javaProject });
final List<SearchMatch> matches = new ArrayList<SearchMatch>();
// Get the search requestor
SearchRequestor requestor = new SearchRequestor() {
public void acceptSearchMatch(SearchMatch match)
throws CoreException {
matches.add(match);
}
};
// Search
SearchEngine searchEngine = new SearchEngine();
try {
searchEngine.search(pattern, new SearchParticipant[] { SearchEngine
.getDefaultSearchParticipant() }, scope, requestor, null);
} catch (CoreException ex) {
// ignore
}
for (Iterator i = matches.iterator(); i != null && i.hasNext();) {
return (IJavaElement) ((SearchMatch) i.next()).getElement();
}
return null;
}
protected IJavaElement searchForClassMethod(String className, String methodName) {
IFile documentFile = getFile();
IJavaElement result = null;
try {
IProject project = null;
if (documentFile == null) {
IWorkbenchPage workbenchPage = ExtensionsPlugin.getDefault().getWorkbench().getActiveWorkbenchWindow().getActivePage();
IEditorPart activeEditorPart = workbenchPage.getActiveEditor();
IEditorInput editorInput = activeEditorPart.getEditorInput();
if (editorInput instanceof IStorageEditorInput) {
IStorageEditorInput moeInput = (IStorageEditorInput)editorInput;
IPath p = moeInput.getStorage().getFullPath();
String s0 = p.segment(0);
project = ResourcesPlugin.getWorkspace().getRoot().getProject(s0);
}
} else {
project = documentFile.getProject();
}
if(project != null && project.isOpen() && project.hasNature(JavaCore.NATURE_ID)) {
IJavaProject javaProject = JavaCore.create(project);
result = searchForClassMethod(javaProject, className, methodName);
}
} catch (CoreException x) {
ExtensionsPlugin.getPluginLog().logError("Error while looking for method " + methodName + " of class " + className, x); //$NON-NLS-1$ //$NON-NLS-2$
}
return result;
}
protected String getAttributeValue(Node node, String attrName) {
try {
Attr attr = (Attr)node.getAttributes().getNamedItem(attrName);
return Utils.getTrimmedValue(getDocument(), attr);
} catch (BadLocationException x) {
//ignore
return null;
}
}
protected String getAttributeValue(IRegion region, String attrName) {
StructuredModelWrapper smw = new StructuredModelWrapper();
try {
smw.init(getDocument());
Document xmlDocument = smw.getDocument();
if (xmlDocument == null) return null;
Node n = Utils.findNodeForOffset(xmlDocument, region.getOffset());
if (n == null || !(n instanceof Attr)) return null;
Node node = ((Attr)n).getOwnerElement();
Attr attr = (Attr)node.getAttributes().getNamedItem(attrName);
return Utils.getTrimmedValue(getDocument(), attr);
} catch (BadLocationException x) {
//ignore
return null;
} finally {
smw.dispose();
}
}
}