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/*******************************************************************************
* Copyright (c) 2001, 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are 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:
* IBM Corporation - initial API and implementation
* Jens Lukowski/Innoopract - initial renaming/restructuring
*
*******************************************************************************/
package org.eclipse.wst.sse.ui.internal.search;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.IWorkspaceRunnable;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.ISchedulingRule;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.search.ui.ISearchQuery;
import org.eclipse.search.ui.ISearchResult;
import org.eclipse.search.ui.NewSearchUI;
import org.eclipse.search.ui.text.Match;
import org.eclipse.ui.texteditor.MarkerUtilities;
import org.eclipse.wst.sse.ui.internal.Logger;
/**
* @author pavery
*/
public class BasicSearchQuery implements ISearchQuery {
/** attribute to identify markers added by find occurrences */
public static final String ATTR_OCCURRENCES_MARKER = "occurrences_marker"; //$NON-NLS-1$
private static int LINE_LENGTH_LIMIT = 200;
/** the file we're searching * */
private IFile fFile = null;
/** occurrence search matches * */
private List fMatches = null;
public BasicSearchQuery(IFile file) {
this.fFile = file;
this.fMatches = new ArrayList();
}
public void addMatch(IDocument document, int matchStart, int matchEnd) {
try {
int lineNumber = document.getLineOfOffset(matchStart);
int lineStart = document.getLineOffset(lineNumber);
int lineLength = document.getLineLength(lineNumber);
String searchResultString = document.get().substring(lineStart, lineStart + lineLength).trim();
// create search marker (so annotations show up in editor)
IMarker marker = createSearchMarker(matchStart, matchEnd, lineNumber, searchResultString);
addMatch(new Match(marker, Match.UNIT_CHARACTER, matchStart, matchStart + matchEnd));
} catch (BadLocationException e) {
Logger.logException(e);
}
}
private void addMatch(Match match) {
if (match != null)
this.fMatches.add(match);
}
/**
* @see org.eclipse.search.ui.ISearchQuery#canRerun()
*/
public boolean canRerun() {
return false;
}
/**
* @see org.eclipse.search.ui.ISearchQuery#canRunInBackground()
*/
public boolean canRunInBackground() {
return true;
}
public void clearMatches() {
this.fMatches.clear();
}
protected IMarker createSearchMarker(int matchStart, int matchEnd, int lineNumber, String searchResultString) {
IMarker marker = null;
try {
if (getFile() != null) {
marker = getFile().createMarker(NewSearchUI.SEARCH_MARKER);
HashMap attributes = new HashMap(6);
MarkerUtilities.setCharStart(attributes, matchStart);
MarkerUtilities.setCharEnd(attributes, matchEnd);
MarkerUtilities.setLineNumber(attributes, lineNumber);
// this might be bad if line of text is VERY long?
if (searchResultString.length() > LINE_LENGTH_LIMIT)
searchResultString = searchResultString.substring(0, LINE_LENGTH_LIMIT) + "..."; //$NON-NLS-1$
MarkerUtilities.setMessage(attributes, searchResultString);
// so we can remove them later
attributes.put(ATTR_OCCURRENCES_MARKER, new Boolean(true));
marker.setAttributes(attributes);
}
} catch (CoreException e) {
Logger.logException(e);
}
return marker;
}
private void deleteOccurrencesMarkers() {
final List removals = new ArrayList();
try {
// clear all old find occurrences markers
IMarker[] searchMarkers = fFile.findMarkers(NewSearchUI.SEARCH_MARKER, false, IResource.DEPTH_ZERO);
for (int i = 0; i < searchMarkers.length; i++) {
Object o = searchMarkers[i].getAttribute(BasicSearchQuery.ATTR_OCCURRENCES_MARKER);
if (o != null && ((Boolean) o).booleanValue() == true)
removals.add(searchMarkers[i]);
}
if (removals.size() > 0) {
IWorkspaceRunnable runnable = new IWorkspaceRunnable() {
public void run(IProgressMonitor monitor) throws CoreException {
for (int i = 0; i < removals.size(); i++)
((IMarker) removals.get(i)).delete();
}
};
// BUG158846 - deadlock if lock up entire workspace, so only lock
// up the file we are searching on
ISchedulingRule markerRule = ResourcesPlugin.getWorkspace().getRuleFactory().markerRule(fFile);
ResourcesPlugin.getWorkspace().run(runnable, markerRule, IWorkspace.AVOID_UPDATE, null);
}
} catch (CoreException e) {
Logger.logException(e);
}
}
/**
* The acutal work of the query. Will be run in a background Job
* automatically if canRunInBackground(..) returns true.
*
* @return
*/
protected IStatus doQuery() {
return Status.OK_STATUS;
}
/*
* public to avoid synthetic method access from inner class
*/
public IFile getFile() {
return this.fFile;
}
/**
* @see org.eclipse.search.ui.ISearchQuery#getLabel()
*/
public String getLabel() {
return ""; //$NON-NLS-1$
}
public Match[] getMatches() {
// get rid of the old markers
if(fFile.exists()) {
deleteOccurrencesMarkers();
doQuery();
}
return (Match[]) this.fMatches.toArray(new Match[this.fMatches.size()]);
}
/**
* @see org.eclipse.search.ui.ISearchQuery#getSearchResult()
*/
public ISearchResult getSearchResult() {
return null;
}
/**
* used in search result display labels
*
* @return
*/
protected String getSearchText() {
return ""; //$NON-NLS-1$
}
/**
* @see org.eclipse.search.ui.ISearchQuery#run(org.eclipse.core.runtime.IProgressMonitor)
*/
public IStatus run(IProgressMonitor monitor) {
// defer to "get(...)"
return Status.OK_STATUS;
}
}
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