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1
14 package org.wings.plaf.css;
15
16
17 import org.wings.*;
18 import org.wings.io.Device;
19 import org.wings.plaf.CGManager;
20 import org.wings.script.JavaScriptEvent;
21 import org.wings.script.JavaScriptListener;
22
23 import java.io.IOException  ;
24
25 public class ListCG extends AbstractComponentCG implements
26 org.wings.plaf.ListCG {
27
28 public void installCG(final SComponent comp) {
29 super.installCG(comp);
30 final SList component = (SList) comp;
31 final CGManager manager = component.getSession().getCGManager();
32 Object value;
33 value = manager.getObject("SList.cellRenderer", SDefaultListCellRenderer.class);
34 if (value != null) {
35 component.setCellRenderer((SDefaultListCellRenderer) value);
36 }
37 }
38
39 private static final JavaScriptListener selectListener = new JavaScriptListener(JavaScriptEvent.ON_CHANGE, "submit()");
40
41 protected void writeFormList(Device device, SList list) throws IOException {
42
43 device.print("<select");
44 Utils.optAttribute(device, "name", Utils.event(list));
45 Utils.optAttribute(device, "tabindex", list.getFocusTraversalIndex());
46 Utils.optAttribute(device, "size", list.getVisibleRowCount());
47 Utils.optAttribute(device, "multiple", (list.getSelectionMode() == SList.MULTIPLE_SELECTION) ? "multiple" : null);
48
49 if (!list.isEnabled())
50 device.print(" disabled=\"true\"");
51 if (list.isFocusOwner())
52 Utils.optAttribute(device, "focus", list.getName());
53
54 list.removeScriptListener(selectListener);
55 if (list.getListSelectionListeners().length > 0) {
56 list.addScriptListener(selectListener);
57 }
58
59 Utils.printCSSInlineFullSize(device, list.getPreferredSize());
60 Utils.writeEvents(device, list);
61
62 device.print(">");
63 javax.swing.ListModel model = list.getModel();
64 int size = model.getSize();
65
66 SListCellRenderer cellRenderer = list.getCellRenderer();
67
68 for (int i = 0; i < size; i++) {
69 SComponent renderer = null;
70 if (cellRenderer != null) {
71 renderer = cellRenderer.getListCellRendererComponent(list, model.getElementAt(i), false, i);
72 }
73
74 device.print("\n<option");
75 Utils.optAttribute(device, "value", list.getSelectionParameter(i));
76 if (list.isSelectedIndex(i)) {
77 device.print(" selected=\"selected\"");
78 }
79
80 org.wings.io.StringBufferDevice stringBufferDevice = getStringBufferDevice();
81
82 Utils.printCSSInlineStyleAttributes(stringBufferDevice, renderer);
83
84 String styleString = stringBufferDevice.toString();
85 if (styleString != null && styleString.length() > 0) {
86 device.print(" style=\"");
87 Utils.write(device, styleString);
88 device.print("\"");
89 }
90 device.print(">");
91
92 if (renderer != null) {
93 org.wings.io.StringBufferDevice string = getStringBufferDevice();
95 renderer.write(string);
96 char[] chars = string.toString().toCharArray();
97 int pos = 0;
98 for (int c = 0; c < chars.length; c++) {
99 switch (chars[c]) {
100 case '<':
101 device.print(chars, pos, c - pos);
102 break;
103 case '>':
104 pos = c + 1;
105 }
106 }
107 device.print(chars, pos, chars.length - pos);
108 } else {
109 device.print(model.getElementAt(i).toString());
110 }
111
112 device.print("</option>");
113 }
114
115 device.print("</select>");
116 device.print("<input type=\"hidden\"");
117 Utils.optAttribute(device, "name", Utils.event(list));
118 Utils.optAttribute(device, "value", -1);
119 device.print("/>");
120 }
121
122 private org.wings.io.StringBufferDevice stringBufferDevice = null;
123
124 protected org.wings.io.StringBufferDevice getStringBufferDevice() {
125 if (stringBufferDevice == null) {
126 stringBufferDevice = new org.wings.io.StringBufferDevice();
127 }
128 stringBufferDevice.reset();
129 return stringBufferDevice;
130 }
131
132 public void writeAnchorList(Device device, SList list)
133 throws IOException {
134 boolean showAsFormComponent = list.getShowAsFormComponent();
135 boolean renderSelection = list.getSelectionMode() != SList.NO_SELECTION;
136
137 device.print("<");
138 device.print(list.getType());
139 Utils.optAttribute(device, "type", list.getOrderType());
140 Utils.optAttribute(device, "start", list.getStart());
141
142 Utils.printCSSInlineFullSize(device, list.getPreferredSize());
143 device.print(">");
144
145 javax.swing.ListModel model = list.getModel();
146 SListCellRenderer cellRenderer = list.getCellRenderer();
147 SCellRendererPane rendererPane = list.getCellRendererPane();
148
149 int start = 0;
150 int end = model.getSize();
151
152 java.awt.Rectangle viewport = list.getViewportSize();
153 if (viewport != null) {
154 start = viewport.y;
155 end = start + viewport.height;
156 }
157
158 for (int i = start; i < end; i++) {
159 boolean selected = list.isSelectedIndex(i);
160
161 if (renderSelection && selected)
162 device.print("<li class=\"SList_selected\"");
163 else
164 device.print("<li>");
165
166 SComponent renderer = cellRenderer.getListCellRendererComponent(list, model.getElementAt(i), selected, i);
167
168 if (renderSelection) {
169 if (showAsFormComponent) {
170 writeButtonStart(device, list, list.getToggleSelectionParameter(i));
171 device.print(" name=\"");
172 Utils.write(device, Utils.event(list));
173 device.print("\" value=\"");
174 Utils.write(device, list.getToggleSelectionParameter(i));
175 device.print("\"");
176 } else {
177 RequestURL selectionAddr = list.getRequestURL();
178 selectionAddr.addParameter(Utils.event(list), list.getToggleSelectionParameter(i));
179
180 writeLinkStart(device, selectionAddr);
181 }
182 Utils.optAttribute(device, "focus", renderer.getName());
183 device.print(">");
184 } else
185 device.print("<span>");
186
187 rendererPane.writeComponent(device, renderer, list);
188
189 if (renderSelection) {
190 if (showAsFormComponent)
191 device.print("</button>");
192 else
193 device.print("</a>");
194 } else
195 device.print("</span>");
196
197 device.print("</li>\n");
198 }
199
200 device.print("</");
201 Utils.write(device, list.getType());
202 device.print(">");
203 }
204
205
209 protected void writeButtonStart(Device device, SList list, String value) throws IOException {
210 device.print("<button");
211 }
212
213
220 protected void writeLinkStart(Device device, RequestURL selectionAddr) throws IOException {
221 device.print("<a HREF=\"");
222 Utils.write(device, selectionAddr.toString());
223 device.print("\"");
224 }
225
226
227 public void writeContent(final Device device,
228 final SComponent _c)
229 throws IOException {
230 final SList component = (SList) _c;
231
232 SList list = (SList) component;
233 if (list.getShowAsFormComponent()) {
234 writeFormList(device, list);
235 } else {
236 writeAnchorList(device, list);
237 }
238 }
239 }
240 |
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