|
1 package fr.improve.struts.taglib.layout.field;
2
3 import java.text.DateFormat  ;
4 import java.text.DateFormatSymbols ;
5 import java.text.ParsePosition ;
6 import java.text.SimpleDateFormat ;
7 import java.util.Calendar ;
8 import java.util.Date ;
9 import java.util.HashMap ;
10 import java.util.Locale ;
11 import java.util.Map ;
12
13 import javax.servlet.jsp.JspException ;
14
15 import org.apache.struts.Globals;
16 import org.apache.struts.taglib.html.Constants;
17 import org.apache.struts.taglib.html.FormTag;
18
19 import fr.improve.struts.taglib.layout.el.Expression;
20 import fr.improve.struts.taglib.layout.event.StaticCodeIncludeLayoutEvent;
21 import fr.improve.struts.taglib.layout.util.LayoutUtils;
22 import fr.improve.struts.taglib.layout.util.TagUtils;
23
28 public class DateFieldTag extends TextFieldTag {
29 public static final String CALENDAR_KEY = "fr.improve.struts.taglib.layout.field.DateFieldTag.CLANDER_KEY";
30 private static final Map dateSymbols = new HashMap ();
31
32
35 protected String patternKey;
36 protected String pattern;
37 protected String startYear;
38 protected String endYear;
39 protected String calendarTooltip;
40
41 public DateFieldTag() {
42 }
44 protected void doAfterValue() throws JspException {
45 if (getFieldDisplayMode() == MODE_EDIT) {
46 Locale lc_locale = findLocale();
47 StringBuffer buffer = new StringBuffer ();
48 buffer.append("<a HREF=\"javascript://\" onclick=\"showCalendar(");
49
50 Object lc_value = getFieldValue();
51 Calendar lc_date = parseDate(lc_value==null ? "" : lc_value.toString(), lc_locale);
52 String lc_year = String.valueOf(Calendar.getInstance().get(Calendar.YEAR));
53
54 buffer.append(lc_date.get(Calendar.YEAR));
55 buffer.append(",");
56 buffer.append(lc_date.get(Calendar.MONTH) + 1);
57 buffer.append(",");
58 buffer.append(lc_date.get(Calendar.DAY_OF_MONTH));
59 buffer.append(",");
60 if (pattern==null) {
61 buffer.append("null");
62 } else {
63 buffer.append("'");
64 buffer.append(pattern);
65 buffer.append("'");
66 }
67 buffer.append(",'");
68 FormTag lc_formTag = (FormTag) pageContext.findAttribute(Constants.FORM_KEY);
69 if (lc_formTag==null) {
70 throw new JspException ("<layout:date> tag is not nested into a <html:form> or <layout:form> tag");
71 }
72 String lc_formName = lc_formTag.getBeanName(); buffer.append(lc_formName);
74 buffer.append("','");
75 buffer.append(property);
76 buffer.append("',event,");
77 buffer.append(startYear==null ? String.valueOf(lc_date.get(Calendar.YEAR)) : Expression.evaluate(startYear,pageContext));
78 buffer.append(",");
79 buffer.append(endYear==null ? (startYear==null ? String.valueOf(lc_date.get(Calendar.YEAR)+2) : lc_year) : Expression.evaluate(endYear, pageContext));
80 buffer.append(");");
81
82 buffer.append("\"><img alt=\"");
83 buildCalendarTooltip(buffer);
84 buffer.append("\" border=\"0\" SRC=\"");
85
86 buffer.append(getSkin().getImageDirectory(pageContext.getRequest()));
87 buffer.append("/");
88 buffer.append(getSkin().getProperty("layout.calendar"));
89 buffer.append("\"></a>");
90
91 if (pageContext.getRequest().getAttribute(CALENDAR_KEY)==null) {
92 StringBuffer lc_buffer2 = new StringBuffer ();
94 includeClientCode(lc_buffer2, lc_date, lc_locale);
95 buffer.append(new StaticCodeIncludeLayoutEvent(this, lc_buffer2.toString()).send());
96 pageContext.getRequest().setAttribute(CALENDAR_KEY, "");
97 }
98 TagUtils.write(pageContext, buffer.toString());
99 }
100 }
101
102
106 protected Locale findLocale() {
107 Locale lc_locale = (Locale ) pageContext.findAttribute(Globals.LOCALE_KEY);
108 if (lc_locale==null) {
109 lc_locale = pageContext.getRequest().getLocale();
110 }
111 return lc_locale;
112 }
113
114 protected void buildCalendarTooltip(StringBuffer buffer) throws JspException {
115 if (calendarTooltip==null) {
116 buffer.append("pick up a date");
117 } else {
118 buffer.append(LayoutUtils.getLabel(pageContext, bundle, calendarTooltip, null, false));
119 }
120 }
121
122
125 protected void includeClientCode(StringBuffer out_buffer, Calendar in_calendar, Locale in_locale) {
126 out_buffer.append("<div id=\"slcalcod\" style=\"position:absolute; left:100px; top:100px; z-index:10; visibility:hidden;\"><script>printCalendar(");
127
128 DateFormatSymbols lc_symbols = (DateFormatSymbols ) dateSymbols.get(in_locale);
129 if (lc_symbols==null) {
130 lc_symbols = new DateFormatSymbols (in_locale);
131 dateSymbols.put(in_locale, lc_symbols);
132 }
133 String [] lc_daySymbols = lc_symbols.getShortWeekdays();
134 String [] lc_monthSymbols = lc_symbols.getShortMonths();
135
136 out_buffer.append("\"").append(lc_daySymbols[Calendar.SUNDAY]).append("\",");
138 out_buffer.append("\"").append(lc_daySymbols[Calendar.MONDAY]).append("\",");
139 out_buffer.append("\"").append(lc_daySymbols[Calendar.TUESDAY]).append("\",");
140 out_buffer.append("\"").append(lc_daySymbols[Calendar.WEDNESDAY]).append("\",");
141 out_buffer.append("\"").append(lc_daySymbols[Calendar.THURSDAY]).append("\",");
142 out_buffer.append("\"").append(lc_daySymbols[Calendar.FRIDAY]).append("\",");
143 out_buffer.append("\"").append(lc_daySymbols[Calendar.SATURDAY]).append("\",");
144 out_buffer.append(in_calendar.getFirstDayOfWeek()).append(",");
145
146 out_buffer.append("\"").append(lc_monthSymbols[Calendar.JANUARY]).append("\",");
147 out_buffer.append("\"").append(lc_monthSymbols[Calendar.FEBRUARY]).append("\",");
148 out_buffer.append("\"").append(lc_monthSymbols[Calendar.MARCH]).append("\",");
149 out_buffer.append("\"").append(lc_monthSymbols[Calendar.APRIL]).append("\",");
150 out_buffer.append("\"").append(lc_monthSymbols[Calendar.MAY]).append("\",");
151 out_buffer.append("\"").append(lc_monthSymbols[Calendar.JUNE]).append("\",");
152 out_buffer.append("\"").append(lc_monthSymbols[Calendar.JULY]).append("\",");
153 out_buffer.append("\"").append(lc_monthSymbols[Calendar.AUGUST]).append("\",");
154 out_buffer.append("\"").append(lc_monthSymbols[Calendar.SEPTEMBER]).append("\",");
155 out_buffer.append("\"").append(lc_monthSymbols[Calendar.OCTOBER]).append("\",");
156 out_buffer.append("\"").append(lc_monthSymbols[Calendar.NOVEMBER]).append("\",");
157 out_buffer.append("\"").append(lc_monthSymbols[Calendar.DECEMBER]).append("\",");
158 out_buffer.append(in_calendar.get(Calendar.DAY_OF_MONTH)).append(",");
159 out_buffer.append(in_calendar.get(Calendar.MONTH)+1).append(",");
160 out_buffer.append(in_calendar.get(Calendar.YEAR));
161 out_buffer.append(");</script></div>");
162 }
163
164
165 public void release() {
166 super.release();
167 patternKey = null;
169 pattern = null;
170 startYear = null;
171 endYear = null;
172 calendarTooltip = null;
173 }
174
175
178 protected Calendar parseDate(Object in_date, Locale in_locale) throws JspException {
179 Calendar lc_calendar = Calendar.getInstance(in_locale);
180 SimpleDateFormat lc_format = null;
181 if (patternKey==null) {
182 lc_format = (SimpleDateFormat ) SimpleDateFormat.getDateInstance(DateFormat.SHORT, in_locale);
184 pattern = lc_format.toPattern();
185 } else {
186 pattern = LayoutUtils.getLabel(pageContext, bundle, patternKey, null, true);
188 if (pattern==null) {
189 pattern = LayoutUtils.getLabel(pageContext, patternKey, null);
191 }
192 lc_format = new SimpleDateFormat (pattern);
193 }
194 if (in_date!=null && in_date.toString().length()>0) {
195 ParsePosition lc_position = new ParsePosition (0);
196 Date lc_date = lc_format.parse(in_date.toString(), lc_position);
197 if (lc_position.getIndex()==in_date.toString().length() && lc_date!=null) {
198 lc_calendar.setTime(lc_date);
199 }
200 }
201 return lc_calendar;
202 }
203
207 public void setPatternKey(String patternKey) {
208 this.patternKey = patternKey;
209 }
210
211 public void setEndYear(String in_string) {
212 endYear = in_string;
213 }
214
215 public void setStartYear(String in_string) {
216 startYear = in_string;
217 }
218
219 public void setCalendarTooltip(String in_string) {
220 calendarTooltip = in_string;
221 }
222
223 }
224 |
Popular Tags |
Java API By Example, From Geeks To Geeks.