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11 package org.eclipse.ui.internal.cheatsheets.views;
12
13 import java.util.ArrayList  ;
14 import java.util.HashSet ;
15 import java.util.Hashtable ;
16 import java.util.Iterator ;
17 import java.util.List ;
18 import java.util.Map ;
19 import java.util.Set ;
20
21 import org.eclipse.ui.cheatsheets.*;
22 import org.eclipse.ui.internal.cheatsheets.registry.CheatSheetElement;
23
24
27 public class CheatSheetManager implements ICheatSheetManager {
28
29 private static final String PARENT_PREFIX = "parent."; private static final String VARIABLE_END = "}"; private static final String VARIABLE_BEGIN = "${"; private String cheatsheetID;
33 private List listeners;
34 private Map dataTable = null;
35 private ICheatSheetManager parent;
36
37 public CheatSheetManager(CheatSheetElement element) {
38 cheatsheetID = element.getID();
39 listeners = new ArrayList ();
40 CheatSheetListener listener = element.createListenerInstance();
41 if (listener != null) {
42 addListener(listener);
43 }
44 }
45
46
49 public String getCheatSheetID() {
50 return cheatsheetID;
51 }
52
53 public void fireEvent(int eventType) {
54 for (Iterator iterator = listeners.iterator();iterator.hasNext();) {
56 ICheatSheetEvent event = new CheatSheetEvent(eventType, cheatsheetID, this);
57 CheatSheetListener listener = (CheatSheetListener)iterator.next();
58 listener.cheatSheetEvent(event);
59 }
60 }
61
62
65 public Map getData() {
66 return dataTable;
67 }
68
69
73 public void setData(Map data) {
74 dataTable = data;
75 }
76
77 public String getData(String key) {
78 if (dataTable == null)
79 return null;
80 return (String ) dataTable.get(key);
81 }
82
83
89 public String getDataQualified(String qualifiedKey) {
90 if (qualifiedKey.startsWith(PARENT_PREFIX) && parent != null) {
91 return parent.getData(qualifiedKey.substring(PARENT_PREFIX.length()));
92 } else {
93 return getData(qualifiedKey);
94 }
95 }
96
97 public String getVariableData(String variable) {
98 String result = variable;
99 if(variable != null && variable.startsWith(VARIABLE_BEGIN) && variable.endsWith(VARIABLE_END)) {
100 result = variable.substring(2,variable.length()-1);
101 result = getDataQualified(result);
102 }
103 return result;
104 }
105
106
113 public String performVariableSubstitution(String input)
114 {
115 String remaining = input;
116 String output = ""; while (remaining.length() > 0) {
118 int varIndex = remaining.indexOf(VARIABLE_BEGIN);
119 int endIndex = remaining.indexOf(VARIABLE_END, varIndex + 1);
120 if (varIndex < 0 || endIndex < 0) {
121 output += remaining;
122 remaining = ""; } else {
124 String varName = remaining.substring(varIndex + VARIABLE_BEGIN.length(),
125 endIndex);
126 String value = getDataQualified(varName);
127 output += remaining.substring(0, varIndex);
128 if (value != null) {
129 output += value;
130 }
131 remaining = remaining.substring(endIndex + VARIABLE_END.length());
132 }
133 }
134 return output;
135 }
136
137 void setData(Hashtable data) {
138 dataTable = data;
139 }
140
141
144 public void setData(String key, String data) {
145 if (key == null) {
146 throw new IllegalArgumentException ();
147 }
148
149 if(data == null && dataTable != null) {
150 dataTable.remove(key);
151 return;
152 }
153
154 if (dataTable == null) {
155 dataTable = new Hashtable (30);
156 }
157
158 dataTable.put(key, data);
159 }
160
161
167 public void setDataQualified(String qualifiedKey, String data) {
168 if (qualifiedKey == null) {
169 throw new IllegalArgumentException ();
170 }
171 if (qualifiedKey.startsWith(PARENT_PREFIX) && parent != null) {
172 parent.setData(qualifiedKey.substring(PARENT_PREFIX.length()), data);
173 } else {
174 setData(qualifiedKey, data);
175 }
176 }
177
178
182 public void addListener(CheatSheetListener listener) {
183 if (listener != null) {
184 listeners.add(listener);
185 }
186 }
187
188 public ICheatSheetManager getParent() {
189 return parent;
190 }
191
192 public void setParent(ICheatSheetManager parent) {
193 this.parent = parent;
194 }
195
196 public Set getKeySet() {
197 if (dataTable == null) {
198 return new HashSet ();
199 } else {
200 return dataTable.keySet();
201 }
202 }
203 }
204 |
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