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1
25 package org.snipsnap.date;
26
27 import org.radeox.util.i18n.ResourceManager;
28 import org.snipsnap.app.Application;
29 import org.snipsnap.config.Configuration;
30 import org.snipsnap.snip.Snip;
31 import org.snipsnap.snip.SnipLink;
32 import org.snipsnap.snip.SnipSpace;
33 import org.snipsnap.snip.SnipSpaceFactory;
34
35 import java.text.DateFormatSymbols  ;
36 import java.util.Calendar ;
37 import java.util.GregorianCalendar ;
38 import java.util.HashSet ;
39 import java.util.Iterator ;
40 import java.util.List ;
41 import java.util.Locale ;
42 import java.util.Set ;
43
44
50 public class Month {
51
52
53 private String [] monthsValue = {
59 "01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12"
60 };
61
62 private String [] months;
64 private String [] weekDaysShort;
65 private String [] weekDaysLong;
66 private Locale locale;
67
68
71 public final static int dom[] = {
72 31, 28, 31, 30,
73 31, 30, 31, 31,
74 30, 31, 30, 31
75 };
76
77 public Month() {
78 locale = ResourceManager.getLocale("i18n.messages");
79 DateFormatSymbols symbols = new DateFormatSymbols (locale);
80 months = symbols.getMonths();
81 weekDaysLong = symbols.getWeekdays();
82 weekDaysShort = symbols.getShortWeekdays();
83 }
84
85 public static String toKey(Calendar calendar) {
86 return toKey(calendar.get(Calendar.YEAR),
87 calendar.get(Calendar.MONTH) + 1,
88 calendar.get(Calendar.DAY_OF_MONTH));
89 }
90
91 public static String toKey(int year, int month, int day) {
92 return year + "-" + (month < 10 ? "0" + month : "" + month) + "-" + (day < 10 ? "0" + day : "" + day);
93 }
94
95
99 public Set getDays(String namespace, int month, int year) {
100 String start = toKey(year, month, 1);
101 String end = toKey(year, month, 31);
102 List snips = SnipSpaceFactory.getInstance().getByDate(namespace, start, end);
103 Iterator iterator = snips.iterator();
104
105 Set days = new HashSet ();
106
107 while (iterator.hasNext()) {
108 Snip snip = (Snip) iterator.next();
109 days.add(snip.getName());
110 }
111 return days;
112 }
113
114 public String getView(boolean navigation) {
115 Calendar today = new GregorianCalendar (locale);
116 today.setTime(new java.util.Date ());
117 return getView(today.get(Calendar.MONTH) + 1, today.get(Calendar.YEAR), navigation);
118 }
119
120 public String getView(int month, int year, boolean navigation) {
121
122 int nextYear = year;
123 int nextMonth = month + 1;
124 if (nextMonth == 13) {
125 nextYear++;
126 nextMonth = 1;
127 }
128 int prevYear = year;
129 int prevMonth = month - 1;
130 if (prevMonth == 0) {
131 prevYear--;
132 prevMonth = 12;
133 }
134
135 Application app = Application.get();
136 Configuration config = app.getConfiguration();
137 Snip viewedSnip = (Snip) app.getParameters().get("viewed");
138 String weblogName = (String ) app.getParameters().get("calsnip");
139 if (weblogName != null) {
140 SnipSpace space = SnipSpaceFactory.getInstance();
141 if (space.exists(weblogName)) {
142 viewedSnip = SnipSpaceFactory.getInstance().load(weblogName);
143 }
144 }
145 String viewed = viewedSnip != null && viewedSnip.isWeblog() ? viewedSnip.getName() : config.getStartSnip();
146
147 StringBuffer view = new StringBuffer ();
148 view.append("<div class=\"calendar\">");
149 view.append("<table summary=\"");
150 view.append(ResourceManager.getString("i18n.messages", "month.summary"));
151 view.append("\">");
152 view.append("<caption>");
153
154
155 if (navigation) {
156 view.append("<a HREF=\"");
157 view.append(SnipLink.getSpaceRoot()).append("/");
158 view.append(viewed);
159 view.append("?calsnip=");
160 view.append(SnipLink.encode(viewed));
161 view.append("&calmonth=");
162 view.append(prevMonth);
163 view.append("&calyear=");
164 view.append(prevYear);
165 view.append("\"><</a> ");
166 }
167 view.append(months[month - 1]);
168 view.append(" ");
169 view.append(year);
170 view.append(" ");
171 if (navigation) {
172 view.append("<a HREF=\"");
173 view.append(SnipLink.getSpaceRoot()).append("/");
174 view.append(viewed);
175 view.append("?calsnip=");
176 view.append(SnipLink.encode(viewed));
177 view.append("&calmonth=");
178 view.append(nextMonth);
179 view.append("&calyear=");
180 view.append(nextYear);
181 view.append("\">></a>");
182 }
183 if (viewedSnip != null && !viewed.equals(config.getStartSnip())) {
184 view.append(" (");
185 view.append(SnipLink.cutLength(viewedSnip.getTitle(), 20));
186 view.append(")");
187 }
188 view.append("</caption>");
189
190 if (month < 1 || month > 12) {
191 throw new IllegalArgumentException ("Month " + month + " bad, must be 1-12");
192 }
193
194 Calendar today = new GregorianCalendar (locale);
195 today.setTime(new java.util.Date ());
196 int todayNumber = today.get(Calendar.DAY_OF_MONTH);
197
198 GregorianCalendar calendar = new GregorianCalendar (locale);
199 calendar.set(year, month - 1, 1);
200
201 int leadGap = calendar.get(Calendar.DAY_OF_WEEK);
204 leadGap = leadGap - calendar.getFirstDayOfWeek();
205 if (leadGap < 0) {
206 leadGap = 6;
207 }
208
209 int daysInMonth = dom[month - 1];
210 if (calendar.isLeapYear(calendar.get(Calendar.YEAR)) && month == 2) {
211 ++daysInMonth;
212 }
213
214 view.append(getHeader(calendar.getFirstDayOfWeek()));
215
217 StringBuffer week = new StringBuffer ();
218 for (int i = 0; i < leadGap; i++) {
220 week.append("<td></td>");
221 }
222
223 Set days = getDays(viewed, month, year);
225
226 for (int i = 1; i <= daysInMonth; i++) {
227 String day = "" + i;
228
229 String calBlogOld = toKey(year, month, i);
230 String calBlogNew = viewed + "/" + calBlogOld + "/1";
231
232 if (days.contains(calBlogNew)) {
233 day = makeLink(SnipLink.encode(calBlogNew) + "?calsnip=" + SnipLink.encode(viewed) + "&calmonth=" + month + "&calyear=" + year, day);
234 } else if (days.contains(calBlogOld)) {
235 day = makeLink(SnipLink.encode(calBlogOld) + "?calsnip=" + SnipLink.encode(viewed) + "&calmonth=" + month + "&calyear=" + year, day);
236 }
237
238 if (i == todayNumber && month == today.get(Calendar.MONTH) + 1 && year == today.get(Calendar.YEAR)) {
239 day = "<span class=\"today\">" + day + "</span>";
240 }
241 week.append("<td>");
242 week.append(day);
243 week.append("</td>");
244
245 if ((leadGap + i) % 7 == 0) {
247 view.append("<tr>");
248 view.append(week.toString());
249 week.setLength(0);
250 view.append("</tr>");
251 }
252
253 }
254 view.append("<tr>");
255 view.append(week);
256 view.append("</tr>");
257 view.append("</table></div>");
258 return view.toString();
259 }
260
261 private String getHeader(int offset) {
262 StringBuffer buffer = new StringBuffer ();
263 buffer.append("<tr>");
264 for (int i = offset - 1; i < weekDaysShort.length - 2 + offset; i++) {
265 buffer.append("<th abbr=\"");
266 buffer.append(weekDaysLong[i % 7 + 1]);
267 buffer.append("\">");
268 buffer.append(weekDaysShort[i % 7 + 1]);
269 buffer.append("</th>");
270 }
271 buffer.append("</tr>");
272 return buffer.toString();
273 }
274
275 private String makeLink(String snipName, String view) {
276 StringBuffer linkBuffer = new StringBuffer ();
277 return SnipLink.appendLinkWithRoot(linkBuffer, SnipLink.getSpaceRoot(), snipName, view).toString();
278 }
279 }
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