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1
15 package org.apache.tapestry.form;
16
17 import java.text.DateFormatSymbols  ;
18 import java.text.SimpleDateFormat ;
19 import java.util.Calendar ;
20 import java.util.Date ;
21 import java.util.HashMap ;
22 import java.util.Locale ;
23 import java.util.Map ;
24
25 import org.apache.hivemind.Resource;
26 import org.apache.tapestry.IAsset;
27 import org.apache.tapestry.IMarkupWriter;
28 import org.apache.tapestry.IRequestCycle;
29 import org.apache.tapestry.IScript;
30 import org.apache.tapestry.PageRenderSupport;
31 import org.apache.tapestry.TapestryUtils;
32 import org.apache.tapestry.engine.IScriptSource;
33 import org.apache.tapestry.form.translator.DateTranslator;
34
35
46
47 public abstract class DatePicker extends AbstractValidatableField
48 {
49 public abstract Date getValue();
50
51 public abstract void setValue(Date value);
52
53 public abstract boolean isDisabled();
54
55 public abstract boolean getIncludeWeek();
56
57 public abstract IAsset getIcon();
58
59 private IScript _script;
60
61 private static final String SYM_NAME = "name";
62
63 private static final String SYM_FORMNAME = "formName";
64
65 private static final String SYM_MONTHNAMES = "monthNames";
66
67 private static final String SYM_SHORT_MONTHNAMES = "shortMonthNames";
68
69 private static final String SYM_WEEKDAYNAMES = "weekDayNames";
70
71 private static final String SYM_SHORT_WEEKDAYNAMES = "shortWeekDayNames";
72
73 private static final String SYM_FIRSTDAYINWEEK = "firstDayInWeek";
74
75 private static final String SYM_MINDAYSINFIRSTWEEK = "minimalDaysInFirstWeek";
76
77 private static final String SYM_FORMAT = "format";
78
79 private static final String SYM_INCL_WEEK = "includeWeek";
80
81 private static final String SYM_VALUE = "value";
82
83 private static final String SYM_BUTTONONCLICKHANDLER = "buttonOnclickHandler";
84
85
90 public abstract IScriptSource getScriptSource();
91
92
95 protected void finishLoad()
96 {
97 super.finishLoad();
98
99 IScriptSource source = getScriptSource();
100
101 Resource location = getSpecification().getSpecificationLocation().getRelativeResource(
102 "DatePicker.script");
103
104 _script = source.getScript(location);
105 }
106
107
111 public void render(IMarkupWriter writer, IRequestCycle cycle, String value)
112 {
113 PageRenderSupport pageRenderSupport = TapestryUtils.getPageRenderSupport(cycle, this);
114
115 boolean disabled = isDisabled();
116 DateTranslator translator = (DateTranslator) getTranslator();
117 Locale locale = getPage().getLocale();
118 SimpleDateFormat format = translator.getDateFormat(locale);
119
120 DateFormatSymbols dfs = format.getDateFormatSymbols();
121 Calendar cal = Calendar.getInstance(locale);
122
123 String name = getName();
124
125 Map symbols = new HashMap ();
126
127 symbols.put(SYM_NAME, name);
128 symbols.put(SYM_FORMAT, format.toPattern());
129 symbols.put(SYM_INCL_WEEK, getIncludeWeek() ? Boolean.TRUE : Boolean.FALSE);
130
131 symbols.put(SYM_MONTHNAMES, makeStringList(dfs.getMonths(), 0, 12));
132 symbols.put(SYM_SHORT_MONTHNAMES, makeStringList(dfs.getShortMonths(), 0, 12));
133 symbols.put(SYM_WEEKDAYNAMES, makeStringList(dfs.getWeekdays(), 1, 8));
134 symbols.put(SYM_SHORT_WEEKDAYNAMES, makeStringList(dfs.getShortWeekdays(), 1, 8));
135 symbols.put(SYM_FIRSTDAYINWEEK, new Integer (cal.getFirstDayOfWeek() - 1));
136 symbols.put(SYM_MINDAYSINFIRSTWEEK, new Integer (cal.getMinimalDaysInFirstWeek()));
137 symbols.put(SYM_FORMNAME, getForm().getName());
138 symbols.put(SYM_VALUE, getValue());
139
140 _script.execute(cycle, pageRenderSupport, symbols);
141
142 renderDelegatePrefix(writer, cycle);
143
144 writer.beginEmpty("input");
145 writer.attribute("type", "text");
146 writer.attribute("name", name);
147 writer.attribute("value", value);
148 writer.attribute("title", format.toLocalizedPattern());
149
150 if (disabled)
151 writer.attribute("disabled", "disabled");
152
153 renderIdAttribute(writer, cycle);
154
155 renderDelegateAttributes(writer, cycle);
156
157 renderContributions(writer, cycle);
158
159 renderInformalParameters(writer, cycle);
160
161 writer.printRaw(" ");
162
163 if (!disabled)
164 {
165 writer.begin("a");
166 writer.attribute("href", (String ) symbols.get(SYM_BUTTONONCLICKHANDLER));
167 }
168
169 IAsset icon = getIcon();
170
171 writer.beginEmpty("img");
172 writer.attribute("src", icon.buildURL(cycle));
173 writer.attribute("border", 0);
174
175 if (!disabled)
176 writer.end();
177
178 renderDelegateSuffix(writer, cycle);
179 }
180
181
184 public Object readValue()
185 {
186 return getValue();
187 }
188
189
192 public void writeValue(Object value)
193 {
194 setValue((Date ) value);
195 }
196
197
200 private String makeStringList(String [] a, int offset, int length)
201 {
202 StringBuffer b = new StringBuffer ();
203 for (int i = offset; i < length; i++)
204 {
205 b.append('"');
208 char[] ch = a[i].toCharArray();
209 for (int j = 0; j < ch.length; j++)
210 {
211 if (ch[j] < 128)
212 {
213 b.append(ch[j]);
214 }
215 else
216 {
217 b.append(escape(ch[j]));
218 }
219 }
220
221 b.append('"');
222 if (i < length - 1)
223 {
224 b.append(", ");
225 }
226 }
227 return b.toString();
228
229 }
230
231
237 private static String escape(char c)
238 {
239 StringBuffer b = new StringBuffer ();
240 for (int i = 0; i < 4; i++)
241 {
242 b.append(Integer.toHexString(c & 0x000F).toUpperCase());
243 c >>>= 4;
244 }
245 b.append("u\\");
246 return b.reverse().toString();
247 }
248
249 } |
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