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56 package org.objectstyle.cayenne.dataview;
57
58 import java.util.ArrayList  ;
59 import java.util.Collections ;
60 import java.util.HashMap ;
61 import java.util.List ;
62 import java.util.Map ;
63
64 import org.apache.commons.lang.Validate;
65 import org.objectstyle.cayenne.map.ObjEntity;
66
67
73 public class ObjEntityView {
74
75 private DataView owner;
76 private ObjEntity objEntity;
77 private List fields = new ArrayList ();
78 private Map nameFieldMap = new HashMap ();
79 private List readOnlyFields = Collections.unmodifiableList(fields);
80 private String name;
81
82 public ObjEntityView() {
83 }
84
85 public String getName() {
86 return name;
87 }
88
89 public void setName(String name) {
90 Validate.notNull(name);
91 this.name = name;
92 }
93
94 public List getFields() {
95 return readOnlyFields;
96 }
97
98 public List getVisibleFields() {
99 int size = getFieldCount();
100 List dst = new ArrayList (size);
101 for (int i = 0; i < size; i++) {
102 ObjEntityViewField field = getField(i);
103 if (field.isVisible())
104 dst.add(field);
105 }
106 return dst;
107 }
108
109 public List getEditableFields() {
110 int size = getFieldCount();
111 List dst = new ArrayList (size);
112 for (int i = 0; i < size; i++) {
113 ObjEntityViewField field = getField(i);
114 if (field.isVisible() && field.isEditable())
115 dst.add(field);
116 }
117 return dst;
118 }
119
120 public ObjEntity getObjEntity() {
121 return objEntity;
122 }
123
124 public void setObjEntity(ObjEntity objEntity) {
125 Validate.notNull(objEntity);
126 this.objEntity = objEntity;
127 }
128
129 public ObjEntityViewField getField(int index) {
130 return (ObjEntityViewField) fields.get(index);
131 }
132
133 public ObjEntityViewField getField(String fieldName) {
134 return (ObjEntityViewField) nameFieldMap.get(fieldName);
135 }
136
137 public ObjEntityViewField getFieldForObjAttribute(String objAttributeName) {
138 for (int i = 0; i < fields.size(); i++) {
139 ObjEntityViewField field = getField(i);
140 if (objAttributeName.equals(field.getObjAttribute().getName()))
141 return field;
142 }
143 return null;
144 }
145
146 public int getFieldCount() {
147 return fields.size();
148 }
149
150 public boolean hasFields() {
151 return !fields.isEmpty();
152 }
153
154 public void clearFields() {
155 for (int i = 0; i < getFieldCount(); i++) {
156 ObjEntityViewField field = getField(i);
157 field.setOwner(null);
158 field.setIndex(-1);
159 }
160 fields.clear();
161 nameFieldMap.clear();
162 }
163
164 public boolean removeField(ObjEntityViewField field) {
165 if (field.getOwner() != this)
166 return false;
167 field.setOwner(null);
168 field.setIndex(-1);
169 nameFieldMap.remove(field.getName());
170 return fields.remove(field);
171 }
172
173 public int insertField(ObjEntityViewField field) {
174 if (field.getOwner() == this)
175 return field.getIndex();
176
177 Validate.notNull(field.getName());
178 Validate.isTrue(!nameFieldMap.containsKey(field.getName()));
179 field.setOwner(this);
180 nameFieldMap.put(field.getName(), field);
181
182 int prefIndex = field.getPreferredIndex();
183 int fieldCount = getFieldCount();
184
185 if (prefIndex < 0) {
186 int newIndex = fieldCount;
187 fields.add(field);
188 field.setIndex(newIndex);
189 return newIndex;
190 }
191
192 int index = 0;
193 int curPrefIndex = -1;
194 while (index < fieldCount
195 && ((curPrefIndex = getField(index++).getPreferredIndex()) <= prefIndex)
196 && curPrefIndex >= 0) {
197 }
199
200 fields.add(index, field);
201 field.setIndex(index);
202 fieldCount++;
203
204 for (int i = (index + 1); i < fieldCount; i++) {
205 getField(i).setIndex(i);
206 }
207
208 return index;
209 }
210
211 public DataView getOwner() {
212 return owner;
213 }
214
215 void setOwner(DataView owner) {
216 this.owner = owner;
217 }
218 } |
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