source: josm/src/org/openstreetmap/josm/data/Preferences.java@ 298

Last change on this file since 298 was 298, checked in by imi, 18 years ago
  • added license description to head of each source file
File size: 6.8 KB
Line 
1// License: GPL. Copyright 2007 by Immanuel Scholz and others
2package org.openstreetmap.josm.data;
3
4import java.io.BufferedReader;
5import java.io.File;
6import java.io.FileReader;
7import java.io.FileWriter;
8import java.io.IOException;
9import java.io.PrintWriter;
10import java.util.ArrayList;
11import java.util.Collection;
12import java.util.LinkedList;
13import java.util.Map;
14import java.util.SortedMap;
15import java.util.StringTokenizer;
16import java.util.TreeMap;
17import java.util.Map.Entry;
18
19import org.openstreetmap.josm.Main;
20
21
22/**
23 * This class holds all preferences for JOSM.
24 *
25 * Other classes can register their beloved properties here. All properties will be
26 * saved upon set-access.
27 *
28 * @author imi
29 */
30public class Preferences {
31
32 public static interface PreferenceChangedListener {
33 void preferenceChanged(String key, String newValue);
34 }
35
36 /**
37 * Class holding one bookmarkentry.
38 * @author imi
39 */
40 public static class Bookmark {
41 public String name;
42 public double[] latlon = new double[4]; // minlat, minlon, maxlat, maxlon
43 @Override public String toString() {
44 return name;
45 }
46 }
47
48 public final ArrayList<PreferenceChangedListener> listener = new ArrayList<PreferenceChangedListener>();
49
50 /**
51 * Map the property name to the property object.
52 */
53 protected final SortedMap<String, String> properties = new TreeMap<String, String>();
54
55 /**
56 * Return the location of the user defined preferences file
57 */
58 public String getPreferencesDir() {
59 if (System.getenv("APPDATA") != null)
60 return System.getenv("APPDATA")+"/JOSM/";
61 return System.getProperty("user.home")+"/.josm/";
62 }
63
64 /**
65 * @return A list of all existing directories, where ressources could be stored.
66 */
67 public Collection<String> getAllPossiblePreferenceDirs() {
68 LinkedList<String> locations = new LinkedList<String>();
69 locations.add(Main.pref.getPreferencesDir());
70 String s;
71 if ((s = System.getenv("JOSM_RESOURCES")) != null) {
72 if (!s.endsWith("/") && !s.endsWith("\\"))
73 s = s + "/";
74 locations.add(s);
75 }
76 if ((s = System.getProperty("josm.resources")) != null) {
77 if (!s.endsWith("/") && !s.endsWith("\\"))
78 s = s + "/";
79 locations.add(s);
80 }
81 String appdata = System.getenv("APPDATA");
82 if (System.getenv("ALLUSERSPROFILE") != null && appdata != null && appdata.lastIndexOf("\\") != -1) {
83 appdata = appdata.substring(appdata.lastIndexOf("\\"));
84 locations.add(System.getenv("ALLUSERSPROFILE")+appdata+"/JOSM/");
85 }
86 locations.add("/usr/local/share/josm/");
87 locations.add("/usr/local/lib/josm/");
88 locations.add("/usr/share/josm/");
89 locations.add("/usr/lib/josm/");
90 return locations;
91 }
92
93
94 synchronized public boolean hasKey(final String key) {
95 return properties.containsKey(key);
96 }
97 synchronized public String get(final String key) {
98 if (!properties.containsKey(key))
99 return "";
100 return properties.get(key);
101 }
102 synchronized public String get(final String key, final String def) {
103 final String prop = properties.get(key);
104 if (prop == null || prop.equals(""))
105 return def;
106 return prop;
107 }
108 synchronized public Map<String, String> getAllPrefix(final String prefix) {
109 final Map<String,String> all = new TreeMap<String,String>();
110 for (final Entry<String,String> e : properties.entrySet())
111 if (e.getKey().startsWith(prefix))
112 all.put(e.getKey(), e.getValue());
113 return all;
114 }
115 synchronized public boolean getBoolean(final String key) {
116 return getBoolean(key, false);
117 }
118 synchronized public boolean getBoolean(final String key, final boolean def) {
119 return properties.containsKey(key) ? Boolean.parseBoolean(properties.get(key)) : def;
120 }
121
122
123 synchronized public void put(final String key, final String value) {
124 if (value == null)
125 properties.remove(key);
126 else
127 properties.put(key, value);
128 save();
129 firePreferenceChanged(key, value);
130 }
131 synchronized public void put(final String key, final boolean value) {
132 properties.put(key, Boolean.toString(value));
133 save();
134 firePreferenceChanged(key, Boolean.toString(value));
135 }
136
137
138 private final void firePreferenceChanged(final String key, final String value) {
139 for (final PreferenceChangedListener l : listener)
140 l.preferenceChanged(key, value);
141 }
142
143 /**
144 * Called after every put. In case of a problem, do nothing but output the error
145 * in log.
146 */
147 protected void save() {
148 try {
149 final PrintWriter out = new PrintWriter(new FileWriter(getPreferencesDir() + "preferences"), false);
150 for (final Entry<String, String> e : properties.entrySet())
151 if (!e.getValue().equals(""))
152 out.println(e.getKey() + "=" + e.getValue());
153 out.close();
154 } catch (final IOException e) {
155 e.printStackTrace();
156 // do not message anything, since this can be called from strange
157 // places.
158 }
159 }
160
161 public void load() throws IOException {
162 properties.clear();
163 final BufferedReader in = new BufferedReader(new FileReader(getPreferencesDir()+"preferences"));
164 int lineNumber = 0;
165 for (String line = in.readLine(); line != null; line = in.readLine(), lineNumber++) {
166 final int i = line.indexOf('=');
167 if (i == -1 || i == 0)
168 throw new IOException("Malformed config file at line "+lineNumber);
169 properties.put(line.substring(0,i), line.substring(i+1));
170 }
171 }
172
173 public final void resetToDefault() {
174 properties.clear();
175 properties.put("laf", "javax.swing.plaf.metal.MetalLookAndFeel");
176 properties.put("projection", "org.openstreetmap.josm.data.projection.Epsg4326");
177 properties.put("propertiesdialog.visible", "true");
178 properties.put("osm-server.url", "http://www.openstreetmap.org/api");
179 save();
180 }
181
182 public Collection<Bookmark> loadBookmarks() throws IOException {
183 File bookmarkFile = new File(getPreferencesDir()+"bookmarks");
184 if (!bookmarkFile.exists())
185 bookmarkFile.createNewFile();
186 BufferedReader in = new BufferedReader(new FileReader(bookmarkFile));
187
188 Collection<Bookmark> bookmarks = new LinkedList<Bookmark>();
189 for (String line = in.readLine(); line != null; line = in.readLine()) {
190 StringTokenizer st = new StringTokenizer(line, ",");
191 if (st.countTokens() < 5)
192 continue;
193 Bookmark b = new Bookmark();
194 b.name = st.nextToken();
195 try {
196 for (int i = 0; i < b.latlon.length; ++i)
197 b.latlon[i] = Double.parseDouble(st.nextToken());
198 bookmarks.add(b);
199 } catch (NumberFormatException x) {
200 // line not parsed
201 }
202 }
203 in.close();
204 return bookmarks;
205 }
206
207 public void saveBookmarks(Collection<Bookmark> bookmarks) throws IOException {
208 File bookmarkFile = new File(Main.pref.getPreferencesDir()+"bookmarks");
209 if (!bookmarkFile.exists())
210 bookmarkFile.createNewFile();
211 PrintWriter out = new PrintWriter(new FileWriter(bookmarkFile));
212 for (Bookmark b : bookmarks) {
213 b.name.replace(',', '_');
214 out.print(b.name+",");
215 for (int i = 0; i < b.latlon.length; ++i)
216 out.print(b.latlon[i]+(i<b.latlon.length-1?",":""));
217 out.println();
218 }
219 out.close();
220 }
221}
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