| /******************************************************************************* |
| * Copyright (c) 2000, 2016 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.help.ui.internal.views; |
| |
| import java.io.File; |
| import java.io.FilenameFilter; |
| import java.util.ArrayList; |
| import java.util.Observable; |
| |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.help.ui.internal.HelpUIPlugin; |
| import org.eclipse.jface.dialogs.IDialogSettings; |
| |
| /** |
| * Manages the scope for the federated search. |
| */ |
| public class ScopeSetManager extends Observable { |
| private ScopeSet activeSet; |
| |
| private ScopeSet lastExplicitSet; |
| |
| private static final String ACTIVE_SET = "activeScopeSet"; //$NON-NLS-1$ |
| |
| private ArrayList<ScopeSet> sets; |
| |
| private ScopeSet defSet; |
| |
| public ScopeSetManager() { |
| ensureLocation(); |
| loadScopeSets(); |
| } |
| |
| public void add(ScopeSet set) { |
| sets.add(set); |
| setChanged(); |
| } |
| |
| public void remove(ScopeSet set) { |
| sets.remove(set); |
| set.dispose(); |
| setChanged(); |
| } |
| |
| public void setActiveSet(ScopeSet set) { |
| if (this.activeSet != null) { |
| this.activeSet.save(); |
| } |
| this.activeSet = set; |
| if (!activeSet.isImplicit()) |
| lastExplicitSet = set; |
| setChanged(); |
| } |
| |
| public boolean restoreLastExplicitSet() { |
| if (activeSet != null && activeSet.isImplicit() |
| && lastExplicitSet != null) { |
| setActiveSet(lastExplicitSet); |
| setChanged(); |
| return true; |
| } |
| return false; |
| } |
| |
| public static void ensureLocation() { |
| IPath location = HelpUIPlugin.getDefault().getStateLocation(); |
| location = location.append(ScopeSet.SCOPE_DIR_NAME); |
| File dir = location.toFile(); |
| if (dir.exists() == false) |
| dir.mkdir(); |
| } |
| |
| public void save() { |
| ensureLocation(); |
| for (int i = 0; i < sets.size(); i++) { |
| ScopeSet set = sets.get(i); |
| set.save(); |
| } |
| IDialogSettings settings = HelpUIPlugin.getDefault() |
| .getDialogSettings(); |
| if (activeSet != null) |
| settings.put(ACTIVE_SET, activeSet.getName()); |
| } |
| |
| public ScopeSet[] getScopeSets(boolean implicit) { |
| ArrayList<ScopeSet> result = new ArrayList<>(); |
| for (int i = 0; i < sets.size(); i++) { |
| ScopeSet set = sets.get(i); |
| if (set.isImplicit() == implicit) |
| result.add(set); |
| if (!implicit && set.isImplicit() && activeSet==set) |
| result.add(set); |
| } |
| return result.toArray(new ScopeSet[result.size()]); |
| } |
| |
| private void loadScopeSets() { |
| sets = new ArrayList<>(); |
| IPath location = HelpUIPlugin.getDefault().getStateLocation(); |
| location = location.append("scope_sets"); //$NON-NLS-1$ |
| File dir = location.toFile(); |
| defSet = null; |
| if (dir.exists() && dir.isDirectory()) { |
| File[] files = dir.listFiles((FilenameFilter) (dir1, name) -> name.endsWith(ScopeSet.EXT) |
| || name.endsWith(HistoryScopeSet.EXT)); |
| if(files == null) { |
| files = new File[0]; |
| } |
| for (int i = 0; i < files.length; i++) { |
| File file = files[i]; |
| String name = file.getName(); |
| int loc = name.lastIndexOf(ScopeSet.EXT); |
| if (loc != -1) { |
| ScopeSet set = new ScopeSet(name.substring(0, loc)); |
| sets.add(set); |
| if (set.isDefault()) |
| defSet = set; |
| continue; |
| } |
| loc = name.lastIndexOf(HistoryScopeSet.EXT); |
| if (loc != -1) { |
| HistoryScopeSet set = new HistoryScopeSet(name.substring(0, |
| loc), null); |
| sets.add(set); |
| } |
| } |
| } |
| if (sets.size() == 1) { |
| activeSet = sets.get(0); |
| } |
| if (defSet == null) { |
| defSet = new ScopeSet(); |
| sets.add(defSet); |
| } |
| |
| } |
| |
| public ScopeSet getDefaultScope() { |
| return defSet; |
| } |
| |
| /** |
| * @return Returns the activeSet. |
| */ |
| public ScopeSet getActiveSet() { |
| if (activeSet == null) { |
| IDialogSettings settings = HelpUIPlugin.getDefault() |
| .getDialogSettings(); |
| String name = settings.get(ACTIVE_SET); |
| activeSet = findSet(name); |
| if (activeSet == null) { |
| return sets.get(0); |
| } |
| if (!activeSet.isImplicit()) |
| lastExplicitSet = activeSet; |
| } |
| return activeSet; |
| } |
| |
| public ScopeSet findSet(String name) { |
| return findSet(name, false); |
| } |
| |
| public HistoryScopeSet findSearchSet(String expression) { |
| for (int i = 0; i < sets.size(); i++) { |
| ScopeSet set = sets.get(i); |
| if (!set.isImplicit() || !(set instanceof HistoryScopeSet)) |
| continue; |
| HistoryScopeSet sset = (HistoryScopeSet) set; |
| if (sset.getExpression().equals(expression)) |
| return sset; |
| } |
| return null; |
| } |
| |
| public ScopeSet findSet(String name, boolean implicit) { |
| ScopeSet defaultSet = null; |
| for (int i = 0; i < sets.size(); i++) { |
| ScopeSet set = sets.get(i); |
| if (name != null && set.isImplicit() == implicit) { |
| if (set.getName().equals(name)) |
| return set; |
| } else if (set.isDefault()) |
| defaultSet = set; |
| } |
| if (!implicit) |
| return defaultSet; |
| return null; |
| } |
| } |