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1
11 package org.eclipse.ui.internal.navigator.extensions;
12
13 import java.util.HashMap  ;
14 import java.util.Map ;
15
16 import org.eclipse.core.commands.common.EventManager;
17 import org.eclipse.jface.util.IPropertyChangeListener;
18 import org.eclipse.jface.util.PropertyChangeEvent;
19 import org.eclipse.ui.navigator.IExtensionStateModel;
20
21
27 public class ExtensionStateModel extends EventManager implements
28 IExtensionStateModel {
29
30 private final String id;
31
32 private final String viewerId;
33
34 private final Map values = new HashMap ();
35
36
45 public ExtensionStateModel(String anId, String aViewerId) {
46 id = anId;
47 viewerId = aViewerId;
48 }
49
50 public String getId() {
51 return id;
52 }
53
54 public String getViewerId() {
55 return viewerId;
56 }
57
58 public String getStringProperty(String aPropertyName) {
59 return (String ) values.get(aPropertyName);
60 }
61
62 public boolean getBooleanProperty(String aPropertyName) {
63
64 Boolean b = (Boolean ) values.get(aPropertyName);
65 return b != null ? b.booleanValue() : false;
66 }
67
68 public int getIntProperty(String aPropertyName) {
69 Integer i = (Integer ) values.get(aPropertyName);
70 return i != null ? i.intValue() : -1;
71 }
72
73 public void setStringProperty(String aPropertyName, String aPropertyValue) {
74 String oldValue = (String ) values.get(aPropertyName);
75 String newValue = aPropertyValue;
76 if (hasPropertyChanged(oldValue, newValue)) {
77 values.put(aPropertyName, newValue);
78 firePropertyChangeEvent(new PropertyChangeEvent(this,
79 aPropertyName, oldValue, newValue));
80 }
81 }
82
83 public void setBooleanProperty(String aPropertyName, boolean aPropertyValue) {
84 Boolean oldValue = (Boolean ) values.get(aPropertyName);
85 Boolean newValue = aPropertyValue ? Boolean.TRUE : Boolean.FALSE;
86 if (hasPropertyChanged(oldValue, newValue)) {
87
88 values.put(aPropertyName, aPropertyValue ? Boolean.TRUE
89 : Boolean.FALSE);
90 firePropertyChangeEvent(new PropertyChangeEvent(this,
91 aPropertyName, oldValue, newValue));
92 }
93 }
94
95 public void setIntProperty(String aPropertyName, int aPropertyValue) {
96 Integer oldValue = (Integer ) values.get(aPropertyName);
97 Integer newValue = new Integer (aPropertyValue);
98 if (hasPropertyChanged(oldValue, newValue)) {
99 values.put(aPropertyName, newValue);
100 firePropertyChangeEvent(new PropertyChangeEvent(this,
101 aPropertyName, oldValue, newValue));
102 }
103 }
104
105 public void addPropertyChangeListener(IPropertyChangeListener aListener) {
106 addListenerObject(aListener);
107 }
108
109 public void removePropertyChangeListener(IPropertyChangeListener aListener) {
110 removeListenerObject(aListener);
111 }
112
113 public Object getProperty(String aPropertyName) {
114 return values.get(aPropertyName);
115 }
116
117 public void setProperty(String aPropertyName, Object aPropertyValue) {
118
119 Object oldValue = values.get(aPropertyName);
120 Object newValue = aPropertyValue;
121 if (hasPropertyChanged(oldValue, newValue)) {
122 values.put(aPropertyName, newValue);
123 firePropertyChangeEvent(new PropertyChangeEvent(this,
124 aPropertyName, oldValue, newValue));
125 }
126 }
127
128 private boolean hasPropertyChanged(Object oldValue, Object newValue) {
129 return oldValue == null || !oldValue.equals(newValue);
130 }
131
132 protected void firePropertyChangeEvent(PropertyChangeEvent anEvent) {
133 Object [] listeners = getListeners();
134 for (int i = 0; i < listeners.length; ++i) {
135 ((IPropertyChangeListener) listeners[i]).propertyChange(anEvent);
136 }
137 }
138
139 }
140 |
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