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1
56 package org.objectstyle.cayenne.dataview;
57
58 import javax.swing.AbstractListModel  ;
59
60 import org.objectstyle.cayenne.DataObject;
61
62
67 public class DOListModel extends AbstractListModel implements DataObjectChangeListener,
68 FieldValueChangeListener {
69
70 protected ObjEntityViewField viewField;
71 protected DataObjectList dataObjects = new DataObjectList(1);
72
73 public DOListModel() {
74 }
75
76 public void setViewField(ObjEntityViewField field) {
77 if (this.viewField != null) {
78 this.viewField.getOwner().getOwner().removeFieldValueChangeListener(this);
79 }
80 this.viewField = field;
81 viewField.getOwner().getOwner().addFieldValueChangeListener(this);
82 fireContentsChanged(this, 0, getSize());
83 }
84
85 public void setDataObjects(DataObjectList dataObjects) {
86 this.dataObjects.removeDataObjectChangeListener(this);
87 this.dataObjects = dataObjects;
88 this.dataObjects.addDataObjectChangeListener(this);
89 fireContentsChanged(this, 0, getSize());
90 }
91
92 public int getSize() {
93 return dataObjects.size();
94 }
95
96 public DataObject getDataObject(int index) {
97 return (DataObject) dataObjects.get(index);
98 }
99
100 public Object getElementAt(int index) {
101 if (viewField == null)
102 return getDataObject(index);
103 return viewField.getValue(getDataObject(index));
104 }
105
106 public void dataChanged(DataObjectChangeEvent event) {
107 if (event.isMultiObjectChange()) {
108 fireContentsChanged(this, 0, getSize());
109 return;
110 }
111 int affectedRow = event.getAffectedDataObjectIndex();
112 switch (event.getId()) {
113 case DataObjectChangeEvent.DATAOBJECT_ADDED:
114 fireIntervalAdded(this, affectedRow, affectedRow);
115 break;
116 case DataObjectChangeEvent.DATAOBJECT_REMOVED:
117 fireIntervalRemoved(this, affectedRow, affectedRow);
118 break;
119 case DataObjectChangeEvent.DATAOBJECT_CHANGED:
120 fireContentsChanged(this, affectedRow, affectedRow);
121 break;
122 default:
123 fireContentsChanged(this, 0, getSize());
124 }
125 }
126
127 public ObjEntityViewField getViewField() {
128 return viewField;
129 }
130
131 public DataObjectList getDataObjects() {
132 return dataObjects;
133 }
134
135 public void fieldValueChanged(FieldValueChangeEvent event) {
136 if (viewField != null && viewField.isSameObjAttribute(event.getField())) {
137 int index = dataObjects.indexOf(event.getModifiedObject());
138 if (index >= 0)
139 fireContentsChanged(this, index, index);
140 }
141 }
142 } |
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