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1
24 package org.riotfamily.forms;
25
26 import java.beans.PropertyEditor  ;
27 import java.text.SimpleDateFormat ;
28 import java.util.Date ;
29 import java.util.Iterator ;
30 import java.util.LinkedList ;
31 import java.util.List ;
32
33 import org.apache.commons.logging.Log;
34 import org.apache.commons.logging.LogFactory;
35 import org.riotfamily.common.beans.ObjectWrapper;
36 import org.riotfamily.common.beans.propertyeditors.SqlDateEditor;
37 import org.springframework.beans.InvalidPropertyException;
38 import org.springframework.beans.PropertyEditorRegistrar;
39 import org.springframework.beans.PropertyEditorRegistrySupport;
40 import org.springframework.beans.propertyeditors.CustomDateEditor;
41
42
43
48 public class EditorBinder extends PropertyEditorRegistrySupport {
49
50 private Log log = LogFactory.getLog(EditorBinder.class);
51
52
53 private List bindings = new LinkedList ();
54
55 private ObjectWrapper objectWrapper;
56
57 private boolean editingExistingBean;
58
59 private EditorBinding parent;
60
61 public EditorBinder(ObjectWrapper objectWrapper) {
62 registerDefaultEditors();
63 registerCustomEditor(java.sql.Date .class,new SqlDateEditor());
64 registerCustomEditor(Date .class, new CustomDateEditor(
65 new SimpleDateFormat ("yyyy-MM-dd"), false));
66
67 this.objectWrapper = objectWrapper;
68 }
69
70 public Class getBeanClass() {
71 return objectWrapper.getObjectClass();
72 }
73
74 public Object getBackingObject() {
75 return objectWrapper.getObject();
76 }
77
78 public void setBackingObject(Object backingObject) {
79 editingExistingBean = backingObject != null;
80 if (backingObject != null) {
81 objectWrapper.setObject(backingObject);
82 }
83 }
84
85 public boolean isEditingExistingBean() {
86 return editingExistingBean;
87 }
88
89 public Object getPropertyValue(String property) {
90 return objectWrapper.getPropertyValue(property);
91 }
92
93 public void setPropertyValue(String property, Object value) {
94 objectWrapper.setPropertyValue(property, value);
95 }
96
97 public Class getPropertyType(String property) {
98 return objectWrapper.getPropertyType(property);
99 }
100
101
107 public void bind(Editor editor, String property) {
108 log.debug("Binding " + editor + " to property " + property);
109 EditorBinding eb = new EditorBindingImpl(editor, property);
110 bindings.add(eb);
111 editor.setEditorBinding(eb);
112 }
113
114
117 public Editor getEditor(String property) {
118 if (property != null) {
119 int i = property.indexOf('.');
120 if (i != -1) {
121 String nested = property.substring(i + 1);
122 property = property.substring(0, i);
123 Editor editor = findEditorByProperty(property);
124 if (editor instanceof BeanEditor) {
125 BeanEditor be = (BeanEditor) editor;
126 return be.getEditor(nested);
127 }
128 else {
129 throw new InvalidPropertyException(getBeanClass(),
130 property, "Nested editor must implement the " +
131 "BeanEditor interface");
132 }
133 }
134 return findEditorByProperty(property);
135 }
136 return null;
137 }
138
139 protected Editor findEditorByProperty(String property) {
140 Iterator it = bindings.iterator();
141 while (it.hasNext()) {
142 EditorBinding binding = (EditorBinding) it.next();
143 if (property.equals(binding.getProperty())) {
144 return binding.getEditor();
145 }
146 }
147 throw new InvalidPropertyException(getBeanClass(), property,
148 "No editor bound to property");
149 }
150
151
155 public String [] getBoundProperties() {
156 String [] props = new String [bindings.size()];
157 Iterator it = bindings.iterator();
158 for (int i = 0; it.hasNext(); i++) {
159 EditorBinding binding = (EditorBinding) it.next();
160 props[i] = binding.getProperty();
161 }
162 return props;
163 }
164
165 public void registerPropertyEditors(PropertyEditorRegistrar[] registrars) {
166 if (registrars != null) {
167 for (int i = 0; i < registrars.length; i++) {
168 registrars[i].registerCustomEditors(this);
169 }
170 }
171 }
172
173
179 public void initEditors() {
180 Iterator it = bindings.iterator();
181 while (it.hasNext()) {
182 EditorBinding binding = (EditorBinding) it.next();
183 Editor editor = binding.getEditor();
184 Object value = null;
185 if (editingExistingBean) {
186 value = getPropertyValue(binding.getProperty());
187 }
188 editor.setValue(value);
189 }
190 }
191
192
199 public Object populateBackingObject() {
200 Iterator it = bindings.iterator();
201 while (it.hasNext()) {
202 EditorBinding binding = (EditorBinding) it.next();
203 Object oldValue = binding.getValue();
204 Object newValue = binding.getEditor().getValue();
205
206
210 if (newValue != oldValue) {
211 setPropertyValue(binding.getProperty(), newValue);
212 }
213 }
214 return getBackingObject();
215 }
216
217 public EditorBinding getParent() {
218 return this.parent;
219 }
220
221 public void setParent(EditorBinding parent) {
222 this.parent = parent;
223 }
224
225 public PropertyEditor getPropertyEditor(Class type, String propertyPath) {
226 PropertyEditor pe = findCustomEditor(type, propertyPath);
227 if (pe == null) {
228 pe = getDefaultEditor(type);
229 }
230 return pe;
231 }
232
233 private class EditorBindingImpl implements EditorBinding {
234
235 private Editor editor;
236
237 private String property;
238
239 public EditorBindingImpl(Editor editor, String property) {
240 this.editor = editor;
241 this.property = property;
242 }
243
244 public EditorBinder getEditorBinder() {
245 return EditorBinder.this;
246 }
247
248 public Editor getEditor() {
249 return editor;
250 }
251
252 public String getProperty() {
253 return property;
254 }
255
256 public Object getValue() {
257 return getPropertyValue(property);
258 }
259
260 public Class getBeanClass() {
261 return EditorBinder.this.getBeanClass();
262 }
263
264 public String getPropertyPath() {
265 if (getParent() != null) {
266 return getParent().getPropertyPath()
267 + '.' + getProperty();
268 }
269 return getProperty();
270 }
271
272 public Class getPropertyType() {
273 return EditorBinder.this.getPropertyType(property);
274 }
275
276 public PropertyEditor getPropertyEditor() {
277 return EditorBinder.this.getPropertyEditor(
278 getPropertyType(), getPropertyPath());
279 }
280
281 }
282
283 } |
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