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1
11 package org.eclipse.help.ui.internal.views;
12
13 import java.io.*;
14 import java.util.ArrayList  ;
15
16 import org.eclipse.core.runtime.IPath;
17 import org.eclipse.help.ui.internal.HelpUIPlugin;
18 import org.eclipse.jface.dialogs.IDialogSettings;
19
20
23 public class ScopeSetManager {
24 private ScopeSet activeSet;
25
26 private ScopeSet lastExplicitSet;
27
28 private static final String ACTIVE_SET = "activeScopeSet";
30 private ArrayList sets;
31
32 public ScopeSetManager() {
33 ensureLocation();
34 loadScopeSets();
35 }
36
37 public void add(ScopeSet set) {
38 sets.add(set);
39 }
40
41 public void remove(ScopeSet set) {
42 sets.remove(set);
43 set.dispose();
44 }
45
46 public void setActiveSet(ScopeSet set) {
47 if (this.activeSet != null) {
48 this.activeSet.save();
49 }
50 this.activeSet = set;
51 if (!activeSet.isImplicit())
52 lastExplicitSet = set;
53 }
54
55 public boolean restoreLastExplicitSet() {
56 if (activeSet != null && activeSet.isImplicit()
57 && lastExplicitSet != null) {
58 setActiveSet(lastExplicitSet);
59 return true;
60 }
61 return false;
62 }
63
64 public static void ensureLocation() {
65 IPath location = HelpUIPlugin.getDefault().getStateLocation();
66 location = location.append(ScopeSet.SCOPE_DIR_NAME);
67 File dir = location.toFile();
68 if (dir.exists() == false)
69 dir.mkdir();
70 }
71
72 public void save() {
73 ensureLocation();
74 for (int i = 0; i < sets.size(); i++) {
75 ScopeSet set = (ScopeSet) sets.get(i);
76 set.save();
77 }
78 IDialogSettings settings = HelpUIPlugin.getDefault()
79 .getDialogSettings();
80 if (activeSet != null)
81 settings.put(ACTIVE_SET, activeSet.getName());
82 }
83
84 public ScopeSet[] getScopeSets(boolean implicit) {
85 ArrayList result = new ArrayList ();
86 for (int i = 0; i < sets.size(); i++) {
87 ScopeSet set = (ScopeSet) sets.get(i);
88 if (set.isImplicit() == implicit)
89 result.add(set);
90 if (!implicit && set.isImplicit() && activeSet==set)
91 result.add(set);
92 }
93 return (ScopeSet[]) result.toArray(new ScopeSet[result.size()]);
94 }
95
96 private void loadScopeSets() {
97 sets = new ArrayList ();
98 IPath location = HelpUIPlugin.getDefault().getStateLocation();
99 location = location.append("scope_sets"); File dir = location.toFile();
101 ScopeSet defSet = null;
102 if (dir.exists() && dir.isDirectory()) {
103 File[] files = dir.listFiles(new FilenameFilter() {
104 public boolean accept(File dir, String name) {
105 return name.endsWith(ScopeSet.EXT)
106 || name.endsWith(HistoryScopeSet.EXT);
107 }
108 });
109 for (int i = 0; i < files.length; i++) {
110 File file = files[i];
111 String name = file.getName();
112 int loc = name.lastIndexOf(ScopeSet.EXT);
113 if (loc != -1) {
114 ScopeSet set = new ScopeSet(name.substring(0, loc));
115 sets.add(set);
116 if (set.isDefault())
117 defSet = set;
118 continue;
119 }
120 loc = name.lastIndexOf(HistoryScopeSet.EXT);
121 if (loc != -1) {
122 HistoryScopeSet set = new HistoryScopeSet(name.substring(0,
123 loc), null);
124 sets.add(set);
125 }
126 }
127 }
128 if (sets.size() == 1) {
129 activeSet = (ScopeSet) sets.get(0);
130 }
131 if (defSet == null)
132 sets.add(new ScopeSet());
133 }
134
135
138 public ScopeSet getActiveSet() {
139 if (activeSet == null) {
140 IDialogSettings settings = HelpUIPlugin.getDefault()
141 .getDialogSettings();
142 String name = settings.get(ACTIVE_SET);
143 activeSet = findSet(name);
144 if (!activeSet.isImplicit())
145 lastExplicitSet = activeSet;
146 }
147 return activeSet;
148 }
149
150 public ScopeSet findSet(String name) {
151 return findSet(name, false);
152 }
153
154 public HistoryScopeSet findSearchSet(String expression) {
155 for (int i = 0; i < sets.size(); i++) {
156 ScopeSet set = (ScopeSet) sets.get(i);
157 if (!set.isImplicit() || !(set instanceof HistoryScopeSet))
158 continue;
159 HistoryScopeSet sset = (HistoryScopeSet) set;
160 if (sset.getExpression().equals(expression))
161 return sset;
162 }
163 return null;
164 }
165
166 public ScopeSet findSet(String name, boolean implicit) {
167 ScopeSet defaultSet = null;
168 for (int i = 0; i < sets.size(); i++) {
169 ScopeSet set = (ScopeSet) sets.get(i);
170 if (name != null && set.isImplicit() == implicit) {
171 if (set.getName().equals(name))
172 return set;
173 } else if (set.isDefault())
174 defaultSet = set;
175 }
176 if (!implicit)
177 return defaultSet;
178 return null;
179 }
180 } |
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