Source Code Cross Referenced for LibrariesSettings.java in  » Testing » KeY » de » uka » ilkd » key » gui » configuration » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Testing » KeY » de.uka.ilkd.key.gui.configuration 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // This file is part of KeY - Integrated Deductive Software Design
002:        // Copyright (C) 2001-2007 Universitaet Karlsruhe, Germany
003:        //                         Universitaet Koblenz-Landau, Germany
004:        //                         Chalmers University of Technology, Sweden
005:        //
006:        // The KeY system is protected by the GNU General Public License. 
007:        // See LICENSE.TXT for details.
008:        //
009:        //
010:        package de.uka.ilkd.key.gui.configuration;
011:
012:        import java.io.File;
013:        import java.util.*;
014:
015:        import de.uka.ilkd.key.gui.GUIEvent;
016:
017:        /** This class encapsulates the information about the active
018:         * libraries settings
019:         */
020:        public class LibrariesSettings implements  Settings {
021:
022:            private static final String LIBRARIES_KEY = "[Libraries]Default";
023:            private static final String LIBRARIES_PATH = "libraries"
024:                    + File.separator;
025:            private LinkedList listenerList = new LinkedList();
026:
027:            /** keys:   the file names of the libraries,
028:             *          standard libraries are given by the library name
029:             *          and user libraries are given by the absolute path
030:             *  values: Booleans that indicate if a library is selected
031:             */
032:            private HashMap libToSel = new HashMap();
033:
034:            /** this boolean indicates that there was no "Libraries" properties section,
035:             *  we need this because the there at least the standard libraries in
036:             *  in the libaries settings*/
037:            private boolean emptyProperties = true;
038:
039:            private static String[] standardLibs = { "stringRules.key",
040:                    "deprecatedRules.key", "acc.key" };
041:
042:            public LibrariesSettings() {
043:                /*adds the standard libraries to libToSel, maybe they will be
044:                  replaced by readSettings  */
045:                for (int i = 0; i < standardLibs.length; i++) {
046:                    libToSel.put(standardLibs[i], new Boolean(false));
047:                }
048:            }
049:
050:            /** gets a Properties object and has to perform the necessary
051:             * steps in order to change this object in a way that it
052:             * represents the stored settings.
053:             */
054:            public void readSettings(Properties props) {
055:                String librariesSequence = props.getProperty(LIBRARIES_KEY);
056:                emptyProperties = false;
057:                if (librariesSequence != null) {
058:                    StringTokenizer st = new StringTokenizer(librariesSequence,
059:                            ",");
060:                    while (st.hasMoreTokens()) {
061:                        String token = st.nextToken().trim();
062:                        int sepIndex = token.lastIndexOf("-");
063:                        if ((sepIndex > 0) && (sepIndex < token.length() - 1))
064:                            libToSel.put(token.substring(0, sepIndex).trim(),
065:                                    new Boolean(token.substring(sepIndex + 1)
066:                                            .trim()));
067:                    }
068:                } else
069:                    emptyProperties = true;
070:            }
071:
072:            /** implements the method required by the Settings interface. The
073:             * settings are written to the given Properties object. Only entries of the form 
074:             * <key> = <value> (,<value>)* are allowed.
075:             * @param props the Properties object where to write the settings as (key, value) pair
076:             */
077:            public void writeSettings(Properties props) {
078:                String s = "";
079:                Iterator keyIt = libToSel.keySet().iterator();
080:                while (keyIt.hasNext()) {
081:                    String fileName = (String) keyIt.next();
082:                    String sel = libToSel.get(fileName).toString();
083:                    s += fileName + "-" + sel;
084:                    if (keyIt.hasNext())
085:                        s += ", ";
086:                }
087:                props.setProperty(LIBRARIES_KEY, s);
088:            }
089:
090:            /** sends the message that the state of this setting has been
091:             * changed to its registered listeners (not thread-safe)
092:             */
093:            protected void fireSettingsChanged() {
094:                Iterator it = listenerList.iterator();
095:                while (it.hasNext()) {
096:                    ((SettingsListener) it.next())
097:                            .settingsChanged(new GUIEvent(this ));
098:                }
099:            }
100:
101:            /** adds a listener to the settings object 
102:             * @param l the listener
103:             */
104:            public void addSettingsListener(SettingsListener l) {
105:                listenerList.add(l);
106:            }
107:
108:            public HashMap getLibraries() {
109:                return (HashMap) libToSel.clone();
110:            }
111:
112:            public void setLibraries(HashMap libraries) {
113:                HashMap oldLibToSel = this .libToSel;
114:                this .libToSel = libraries;
115:                if (oldLibToSel != null && !oldLibToSel.equals(libToSel)) {
116:                    fireSettingsChanged();
117:                }
118:
119:            }
120:
121:            public boolean emptyProperties() {
122:                return emptyProperties;
123:            }
124:
125:            /** @return the path of the libraries */
126:            public static String getLibrariesPath() {
127:                return LIBRARIES_PATH;
128:            }
129:
130:        }
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