/*******************************************************************************
* Copyright (c) 2000, 2015 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
*******************************************************************************/
package org.eclipse.search.internal.ui;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Map;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IMarkerDelta;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.dialogs.ProgressMonitorDialog;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.ui.actions.WorkspaceModifyOperation;
import org.eclipse.search.internal.ui.util.ExceptionHandler;
import org.eclipse.search.ui.IGroupByKeyComputer;
import org.eclipse.search.ui.SearchUI;
/**
* Manage search results
* @deprecated old search
*/
@Deprecated
public class SearchManager implements IResourceChangeListener {
static SearchManager fgDefault;
Search fCurrentSearch= null;
private SearchManager() {
SearchPlugin.getWorkspace().addResourceChangeListener(this);
}
private HashSet<SearchResultViewer> fListeners= new HashSet<>();
private LinkedList<Search> fPreviousSearches= new LinkedList<>();
private boolean fIsRemoveAll= false;
public static synchronized SearchManager getDefault() {
if (fgDefault == null)
fgDefault= new SearchManager();
return fgDefault;
}
public void dispose() {
SearchPlugin.getWorkspace().removeResourceChangeListener(this);
}
/**
* Returns the list with previous searches (ISearch).
* @return previous searches
*/
LinkedList<Search> getPreviousSearches() {
return fPreviousSearches;
}
/**
* Returns the list with current (last) results
* @return the current results
*/
ArrayList<SearchResultViewEntry> getCurrentResults() {
if (fCurrentSearch == null)
return new ArrayList<>(0);
return (ArrayList<SearchResultViewEntry>)fCurrentSearch.getResults();
}
public Search getCurrentSearch() {
return fCurrentSearch;
}
void removeAllSearches() {
SearchPlugin.getWorkspace().removeResourceChangeListener(this);
WorkspaceModifyOperation op= new WorkspaceModifyOperation(null) {
@Override
protected void execute(IProgressMonitor monitor) throws CoreException {
monitor.beginTask(SearchMessages.SearchManager_updating, 100);
SearchPlugin.getWorkspace().getRoot().deleteMarkers(SearchUI.SEARCH_MARKER, true, IResource.DEPTH_INFINITE);
monitor.worked(100);
monitor.done();
}
};
boolean isAutoBuilding= SearchPlugin.setAutoBuilding(false);
try {
ProgressMonitorDialog dialog= new ProgressMonitorDialog(getShell());
dialog.run(true, true, op);
} catch (InvocationTargetException ex) {
ExceptionHandler.handle(ex, SearchMessages.Search_Error_deleteMarkers_title, SearchMessages.Search_Error_deleteMarkers_message);
} catch (InterruptedException e) {
// Do nothing. Operation has been canceled.
} finally {
SearchPlugin.getWorkspace().addResourceChangeListener(this);
SearchPlugin.setAutoBuilding(isAutoBuilding);
}
// clear searches
fPreviousSearches= new LinkedList<>();
fCurrentSearch= null;
// update viewers
Iterator<SearchResultViewer> iter= fListeners.iterator();
while (iter.hasNext()) {
SearchResultViewer viewer= iter.next();
handleAllSearchesRemoved(viewer);
}
}
private void handleAllSearchesRemoved(SearchResultViewer viewer) {
viewer.handleAllSearchesRemoved();
}
void setCurrentSearch(final Search search) {
if (fCurrentSearch == search)
return;
SearchPlugin.getWorkspace().removeResourceChangeListener(this);
WorkspaceModifyOperation op= new WorkspaceModifyOperation(null) {
@Override
protected void execute(IProgressMonitor monitor) throws CoreException {
internalSetCurrentSearch(search, monitor);
}
};
boolean isAutoBuilding= SearchPlugin.setAutoBuilding(false);
try {
ProgressMonitorDialog dialog= new ProgressMonitorDialog(getShell());
dialog.run(true, true, op);
} catch (InvocationTargetException ex) {
ExceptionHandler.handle(ex, SearchMessages.Search_Error_switchSearch_title, SearchMessages.Search_Error_switchSearch_message);
} catch (InterruptedException e) {
// Do nothing. Operation has been canceled.
} finally {
SearchPlugin.setAutoBuilding(isAutoBuilding);
}
getPreviousSearches().remove(search);
getPreviousSearches().addFirst(search);
}
void internalSetCurrentSearch(final Search search, IProgressMonitor monitor) {
if (fCurrentSearch != null)
fCurrentSearch.backupMarkers();
final Search previousSearch= fCurrentSearch;
fCurrentSearch= search;
monitor.beginTask(SearchMessages.SearchManager_updating, getCurrentResults().size() + 20);
// remove current search markers
try {
SearchPlugin.getWorkspace().getRoot().deleteMarkers(SearchUI.SEARCH_MARKER, true, IResource.DEPTH_INFINITE);
} catch (CoreException ex) {
ExceptionHandler.handle(ex, SearchMessages.Search_Error_deleteMarkers_title, SearchMessages.Search_Error_deleteMarkers_message);
}
monitor.worked(10);
// add search markers
Iterator<SearchResultViewEntry> iter= getCurrentResults().iterator();
ArrayList<SearchResultViewEntry> emptyEntries= new ArrayList<>(10);
boolean filesChanged= false;
boolean filesDeleted= false;
IGroupByKeyComputer groupByKeyComputer= getCurrentSearch().getGroupByKeyComputer();
while (iter.hasNext()) {
monitor.worked(1);
SearchResultViewEntry entry= iter.next();
Iterator<Map<String, Object>> attrPerMarkerIter= entry.getAttributesPerMarker().iterator();
entry.clearMarkerList();
if (entry.getResource() == null || !entry.getResource().exists()) {
emptyEntries.add(entry);
filesDeleted= true;
continue;
}
while (attrPerMarkerIter.hasNext()) {
IMarker newMarker= null;
try {
newMarker= entry.getResource().createMarker(entry.getMarkerType());
} catch (CoreException ex) {
ExceptionHandler.handle(ex, SearchMessages.Search_Error_createMarker_title, SearchMessages.Search_Error_createMarker_message);
continue;
}
try {
newMarker.setAttributes(attrPerMarkerIter.next());
if (groupByKeyComputer !=null && groupByKeyComputer.computeGroupByKey(newMarker) == null) {
filesDeleted= true;
newMarker.delete();
continue;
}
} catch (CoreException ex) {
ExceptionHandler.handle(ex, SearchMessages.Search_Error_markerAttributeAccess_title, SearchMessages.Search_Error_markerAttributeAccess_message);
}
entry.add(newMarker);
}
if (entry.getMatchCount() == 0)
emptyEntries.add(entry);
else if (!filesChanged && entry.getResource().getModificationStamp() != entry.getModificationStamp())
filesChanged= true;
}
getCurrentResults().removeAll(emptyEntries);
monitor.worked(10);
String warningMessage= null;
Display display= getDisplay();
if (filesChanged)
warningMessage= SearchMessages.SearchManager_resourceChanged;
if (filesDeleted) {
if (warningMessage == null)
warningMessage= ""; //$NON-NLS-1$
else
warningMessage += "\n"; //$NON-NLS-1$
warningMessage += SearchMessages.SearchManager_resourceDeleted;
}
if (warningMessage != null) {
if (display != null && !display.isDisposed()) {
final String warningTitle= SearchMessages.SearchManager_resourceChangedWarning;
final String warningMsg= warningMessage;
display.syncExec(new Runnable() {
@Override
public void run() {
MessageDialog.openWarning(getShell(), warningTitle, warningMsg);
}
});
}
}
// update viewers
Iterator<SearchResultViewer> iter2= fListeners.iterator();
if (display != null && !display.isDisposed()) {
final Viewer visibleViewer= ((SearchResultView)SearchUI.getSearchResultView()).getViewer();
while (iter2.hasNext()) {
final SearchResultViewer viewer= iter2.next();
display.syncExec(new Runnable() {
@Override
public void run() {
if (previousSearch != null && viewer == visibleViewer)
previousSearch.setSelection(viewer.getSelection());
viewer.setInput(null);
viewer.setPageId(search.getPageId());
viewer.setGotoMarkerAction(search.getGotoMarkerAction());
viewer.setContextMenuTarget(search.getContextMenuContributor());
viewer.setActionGroupFactory(null);
viewer.setInput(getCurrentResults());
viewer.setActionGroupFactory(search.getActionGroupFactory());
viewer.setSelection(fCurrentSearch.getSelection(), true);
}
});
}
}
monitor.done();
}
/**
* Returns the number of matches
* @return the number of matches
*/
int getCurrentItemCount() {
if (fCurrentSearch != null)
return fCurrentSearch.getItemCount();
return 0;
}
void removeAllResults() {
fIsRemoveAll= true;
try {
SearchPlugin.getWorkspace().getRoot().deleteMarkers(SearchUI.SEARCH_MARKER, true, IResource.DEPTH_INFINITE);
} catch (CoreException ex) {
ExceptionHandler.handle(ex, SearchMessages.Search_Error_deleteMarkers_title, SearchMessages.Search_Error_deleteMarkers_message);
fIsRemoveAll= false;
}
}
void addNewSearch(final Search newSearch) {
SearchPlugin.getWorkspace().removeResourceChangeListener(this);
// Clear the viewers
Iterator<SearchResultViewer> iter= fListeners.iterator();
Display display= getDisplay();
if (display != null && !display.isDisposed()) {
final Viewer visibleViewer= ((SearchResultView)SearchUI.getSearchResultView()).getViewer();
while (iter.hasNext()) {
final SearchResultViewer viewer= iter.next();
display.syncExec(new Runnable() {
@Override
public void run() {
if (fCurrentSearch != null && viewer == visibleViewer)
fCurrentSearch.setSelection(viewer.getSelection());
setNewSearch(viewer, newSearch);
}
});
}
}
if (fCurrentSearch != null) {
if (fCurrentSearch.isSameSearch(newSearch))
getPreviousSearches().remove(fCurrentSearch);
else
fCurrentSearch.backupMarkers();
}
fCurrentSearch= newSearch;
getPreviousSearches().addFirst(fCurrentSearch);
// Remove the markers
try {
SearchPlugin.getWorkspace().getRoot().deleteMarkers(SearchUI.SEARCH_MARKER, true, IResource.DEPTH_INFINITE);
} catch (CoreException ex) {
ExceptionHandler.handle(ex, SearchMessages.Search_Error_deleteMarkers_title, SearchMessages.Search_Error_deleteMarkers_message);
}
}
void searchFinished(ArrayList<SearchResultViewEntry> results) {
Assert.isNotNull(results);
getCurrentSearch().setResults(results);
Display display= getDisplay();
if (display == null || display.isDisposed())
return;
if (Thread.currentThread() == display.getThread())
handleNewSearchResult();
else {
display.syncExec(new Runnable() {
@Override
public void run() {
handleNewSearchResult();
}
});
}
SearchPlugin.getWorkspace().addResourceChangeListener(this);
}
//--- Change event handling -------------------------------------------------
void addSearchChangeListener(SearchResultViewer viewer) {
fListeners.add(viewer);
}
void removeSearchChangeListener(SearchResultViewer viewer) {
Assert.isNotNull(viewer);
fListeners.remove(viewer);
}
private final void handleSearchMarkersChanged(IMarkerDelta[] markerDeltas) {
if (fIsRemoveAll) {
handleRemoveAll();
fIsRemoveAll= false;
return;
}
Iterator<SearchResultViewer> iter= fListeners.iterator();
while (iter.hasNext())
iter.next().getControl().setRedraw(false);
for (int i=0; i < markerDeltas.length; i++) {
handleSearchMarkerChanged(markerDeltas[i]);
}
iter= fListeners.iterator();
while (iter.hasNext())
iter.next().getControl().setRedraw(true);
}
private void handleSearchMarkerChanged(IMarkerDelta markerDelta) {
int kind= markerDelta.getKind();
// don't listen for adds will be done by ISearchResultView.addMatch(...)
if (((kind & IResourceDelta.REMOVED) != 0))
handleRemoveMatch(markerDelta.getMarker());
else if ((kind & IResourceDelta.CHANGED) != 0)
handleUpdateMatch(markerDelta.getMarker());
}
private void handleRemoveAll() {
if (fCurrentSearch != null)
fCurrentSearch.removeResults();
Iterator<SearchResultViewer> iter= fListeners.iterator();
while (iter.hasNext())
iter.next().handleRemoveAll();
}
private void handleNewSearchResult() {
Iterator<SearchResultViewer> iter= fListeners.iterator();
while (iter.hasNext()) {
SearchResultViewer viewer= iter.next();
viewer.setInput(getCurrentResults());
}
}
private void setNewSearch(SearchResultViewer viewer, Search search) {
viewer.setInput(null);
viewer.clearTitle();
viewer.setPageId(search.getPageId());
viewer.setGotoMarkerAction(search.getGotoMarkerAction());
viewer.setContextMenuTarget(search.getContextMenuContributor());
viewer.setActionGroupFactory(search.getActionGroupFactory());
}
private void handleRemoveMatch(IMarker marker) {
SearchResultViewEntry entry= findEntry(marker);
if (entry != null) {
entry.remove(marker);
if (entry.getMatchCount() == 0) {
getCurrentResults().remove(entry);
Iterator<SearchResultViewer> iter= fListeners.iterator();
while (iter.hasNext())
iter.next().handleRemoveMatch(entry);
}
else {
Iterator<SearchResultViewer> iter= fListeners.iterator();
while (iter.hasNext())
iter.next().handleUpdateMatch(entry, true);
}
}
}
private void handleUpdateMatch(IMarker marker) {
SearchResultViewEntry entry= findEntry(marker);
if (entry != null) {
Iterator<SearchResultViewer> iter= fListeners.iterator();
while (iter.hasNext())
iter.next().handleUpdateMatch(entry, false);
}
}
private SearchResultViewEntry findEntry(IMarker marker) {
Iterator<SearchResultViewEntry> entries= getCurrentResults().iterator();
while (entries.hasNext()) {
SearchResultViewEntry entry= entries.next();
if (entry.contains(marker))
return entry;
}
return null;
}
/**
* Received a resource event. Since the delta could be created in a
* separate thread this methods post the event into the viewer's
* display thread.
* @param event the event
*/
@Override
public final void resourceChanged(final IResourceChangeEvent event) {
if (event == null)
return;
final IMarkerDelta[] markerDeltas= event.findMarkerDeltas(SearchUI.SEARCH_MARKER, true);
if (markerDeltas == null || markerDeltas.length < 1)
return;
Display display= getDisplay();
if (display == null || display.isDisposed())
return;
Runnable runnable= new Runnable() {
@Override
public void run() {
if (getCurrentSearch() != null) {
handleSearchMarkersChanged(markerDeltas);
// update title and actions
Iterator<SearchResultViewer> iter= fListeners.iterator();
while (iter.hasNext()) {
SearchResultViewer viewer= iter.next();
viewer.enableActions();
viewer.updateTitle();
}
}
}
};
display.syncExec(runnable);
}
/**
* Find and return a valid display
* @return the display
*/
private Display getDisplay() {
Iterator<SearchResultViewer> iter= fListeners.iterator();
while (iter.hasNext()) {
Control control= ((Viewer)iter.next()).getControl();
if (control != null && !control.isDisposed()) {
Display display= control.getDisplay();
if (display != null && !display.isDisposed())
return display;
}
}
return null;
}
/**
* Find and return a valid shell
* @return the shell
*/
private Shell getShell() {
return SearchPlugin.getActiveWorkbenchShell();
}
}