war/src/main/java/pnews/servlet/HTML.java

   1 package pnews.servlet;
   2
   3 import java.io.UnsupportedEncodingException;
   4 import java.net.URLEncoder;
   5 import java.util.List;
   6 import java.util.logging.Level;
   7 import java.util.logging.Logger;
   8
   9 import pnews.Article;
  10 import pnews.Category;
  11
  12 public class HTML {
  13         private static final String CLASS_NAME= HTML.class.getName();
  14         private static final Logger LOG = Logger.getLogger(CLASS_NAME);
  15
  16         private static void appendA(StringBuffer buf, String child, String href, String cl) {
  17                 buf.append("<a href='");
  18                 buf.append(href);
  19                 buf.append("'");
  20                 if (cl != null) {
  21                         buf.append(" class='");
  22                         buf.append(cl);
  23                         buf.append('\'');
  24                 }
  25                 buf.append('>');
  26                 buf.append(child);
  27                 buf.append("</a>");
  28         }
  29
  30         private static void appendDiv(StringBuffer buf, String child) {
  31                 buf.append("<div>");
  32                 buf.append(child);
  33                 buf.append("</div>\n");
  34         }
  35
  36         private static void appendP(StringBuffer buf, String child) {
  37                 buf.append("<p>");
  38                 buf.append(child);
  39                 buf.append("</p>\n");
  40         }
  41
  42         private static void append(StringBuffer buf, Article a) throws UnsupportedEncodingException {
  43                 buf.append("<div class='article'>\n");
  44
  45                 buf.append("<div class='article-image'>\n");
  46                 if (a.thumbnail != null) {
  47                         buf.append("<img class='left' src='");
  48                         buf.append(a.thumbnail);
  49                         buf.append("'/>\n");
  50                 }
  51                 buf.append("</div>\n");
  52
  53                 buf.append("<div class='article-content'>\n");
  54
  55                 buf.append("<div class='article-title'>\n");
  56                 appendA(buf, a.title, "/redirect?url=" + URLEncoder.encode(a.link, "UTF-8"), null);
  57                 buf.append("</div>\n");
  58
  59                 buf.append("<div class='article-info'>" + a.website + " - " + a.publicationDate + "</div>");
  60
  61                 buf.append("<div class='article-description'>\n");
  62                 if (a.description != null) {
  63                         buf.append("<p>");
  64                         buf.append(a.description);
  65                         buf.append("</p>");
  66                 }
  67                 buf.append("</div>\n");
  68
  69                 buf.append("</div>\n");
  70
  71                 buf.append("</div>\n");
  72         }
  73
  74         private static void appendMenu(StringBuffer buf, Category catActive, Category[] cats) {
  75                 String cl;
  76
  77                 buf.append("<nav>\n");
  78                 buf.append("<ul>\n");
  79
  80                 for (Category cat: cats) {
  81                         buf.append("<li>");
  82
  83                         if (cat.equals(catActive))
  84                                 cl = "active";
  85                         else
  86                                 cl = null;
  87
  88                         appendA(buf, cat.getName(), cat.getURL(), cl);
  89                         buf.append("</li>");
  90                 }
  91
  92                 buf.append("</ul>\n");
  93                 buf.append("</nav>\n");
  94         }
  95
  96         public static String toHTML(List<Article> articles, Category catActive, Category[] cats) {
  97                 StringBuffer buf;
  98                 int i;
  99
 100                 buf = new StringBuffer();
 101                 buf.append("<!DOCTYPE html>\n");
 102                 buf.append("<html lang='fr'>\n");
 103                 buf.append("<head>\n");
 104                 buf.append("<meta charset=\"UTF-8\">\n");
 105                 buf.append("<link rel='stylesheet' href='/style.css' />\n");
 106                 buf.append("<title>");
 107                 buf.append(catActive.getTitle());
 108                 buf.append(" - PNews</title>\n");
 109                 buf.append("</head>\n");
 110                 buf.append("<body>\n");
 111
 112                 appendMenu(buf, catActive, cats);
 113
 114                 i = 0;
 115                 for (Article e: articles) {
 116                         try {
 117                                 append(buf, e);
 118                         } catch (UnsupportedEncodingException e1) {
 119                                 LOG.log(Level.SEVERE, "fail to convert article to HTML", e1);
 120                         }
 121                         if (i == 100)
 122                                 break;
 123                         else
 124                                 i++;
 125                 }
 126
 127                 buf.append("</body>\n");
 128                 buf.append("</html>\n");
 129
 130                 return buf.toString();
 131         }
 132 }