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1 <%
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2 package nabble.view.lib;
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3
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4 import java.io.IOException;
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5 import java.io.PrintWriter;
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6 import javax.servlet.http.HttpServletRequest;
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7 import javax.servlet.http.HttpServletResponse;
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8
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9
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10 // used outside nabble, so do not use Init
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11 public final class HtmlViewUtils {
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12
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13 private HtmlViewUtils() {} // never
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14
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15
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16 /** Number of pages to be displayed before/after the current page*/
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17 public static final int NEIGHBOR_PAGES = 3;
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18
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19 public static interface PagingPath {
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20 public String path(int row);
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21 }
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22
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23 public static final class GenericPagingPath implements PagingPath {
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24 private final String url;
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25
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26 public GenericPagingPath(String url) {
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27 this.url = url;
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28 }
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29
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30 public String path(int row) {
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31 return url + (row==0 ? "" : "&i=" + row);
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32 }
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33 }
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34
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35 public static void genericPaging(HttpServletRequest request,HttpServletResponse response, int count, int currentRecord, int maxRows, PagingPath pagingPath, String margins)
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36 throws IOException
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37 {
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38 genericPaging(request, response, count, currentRecord, maxRows, pagingPath, margins, false, NEIGHBOR_PAGES);
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39 }
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40
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41 public static void genericPaging(HttpServletRequest request,HttpServletResponse response, int count, int currentRecord, int maxRows, PagingPath pagingPath, String margins, boolean hideLastPage,int NEIGHBOR_PAGES)
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42 throws IOException
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43 {
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44 PrintWriter out = response.getWriter();
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45 if (count > maxRows) {
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46 %>
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47 <style type="text/css">
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48 span.page { padding: .1em .3em }
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49 span.current-page { border-width:1px; border-style:solid; }
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50 </style>
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51 <span style="float:right;white-space:nowrap;padding:<%=margins%>;font-weight:normal">
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52 <%
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53 int currentPage = (currentRecord / maxRows) + 1;
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54 int lastPage = count / maxRows;
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55 // If there are more items on the next page...
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56 if (count % maxRows > 0)
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57 lastPage++; // ... I increment the last page.
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58
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59 int before = currentPage - NEIGHBOR_PAGES;
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60 int after = currentPage + NEIGHBOR_PAGES;
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61 if (before <= 1) {
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62 // Among the first pages
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63 int limit = Math.min(currentPage + NEIGHBOR_PAGES, lastPage);
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64
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65 for (int i = 1; i <= limit; i++) {
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66 if (i == currentPage) {
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67 %>
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68 <span class="current-page page medium-border-color"><%=i%></span>
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69 <%
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70 } else {
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71 int page = (i-1) * maxRows;
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72 %>
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73 <span class="page">
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74 <a href="<%=pagingPath.path(page)%>" title="page <%=i%>"><%=i%></a>
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75 </span>
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76 <%
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77 }
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78 }
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79
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80 if (limit < lastPage) {
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81 int page = (lastPage-1) * maxRows;
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82 boolean atEnd = after == lastPage-1;
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83 %>
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84 <%=atEnd? "" : "..."%>
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85 <% if (!hideLastPage || atEnd) { %>
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86 <span class="page">
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87 <a href="<%=pagingPath.path(page)%>" title="page <%=lastPage%>"<%=atEnd? "" : " rel=\"nofollow\""%>><%=lastPage%></a>
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88 </span>
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89 <% } %>
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90 <%
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91 }
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92 } else if (before > 1 && after < lastPage) {
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93 // In the middle pages
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94 %>
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95 <span class="page">
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96 <a href="<%=pagingPath.path(0)%>" title="page 1">1</a>
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97 </span>
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98 <%=before == 2? "" : "..."%>
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99 <%
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100 int limit = before + 2 * NEIGHBOR_PAGES;
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101 for (int i = before; i <= limit; i++) {
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102 if (i == currentPage) {
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103 %><span class="current-page page medium-border-color"><%=i%></span><%
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104 } else {
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105 int page = (i-1) * maxRows;
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106 %>
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107 <span class="page">
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108 <a href="<%=pagingPath.path(page)%>" title="page <%=i%>"><%=i%></a>
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109 </span>
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110 <%
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111 }
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112 }
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113
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114 if (limit < lastPage) {
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115 int page = (lastPage-1) * maxRows;
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116 boolean atEnd = after == lastPage-1;
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117 %>
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118 <%=atEnd? "" : "..."%>
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119 <% if (!hideLastPage || atEnd) { %>
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120 <span class="page">
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121 <a href="<%=pagingPath.path(page)%>" title="page <%=lastPage%>"<%=atEnd? "" : " rel=\"nofollow\""%>><%=lastPage%></a>
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122 </span>
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123 <% } %>
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124 <%
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125 }
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126 } else {
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127 // Among the last pages
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128 %>
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129 <span class="page">
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130 <a href="<%=pagingPath.path(0)%>" title="page 1">1</a>
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131 </span>
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132 <%=before == 2? "" : "..."%>
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133 <%
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134 for (int i = before; i <= lastPage; i++) {
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135 if (i == currentPage) {
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136 %><span class="current-page page medium-border-color"><%=i%></span><%
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137 } else {
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138 int page = (i-1) * maxRows;
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139 %>
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140 <span class="page">
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141 <a href="<%=pagingPath.path(page)%>" title="page <%=i%>"><%=i%></a>
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142 </span>
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143 <%
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144 }
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145 }
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146 }
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147 %>
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148 </span>
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149 <%
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150 }
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151 }
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152
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153 public static void googleAnalytics(PrintWriter out) {
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154 %>
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155 <script>
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156 (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
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157 (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
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158 m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
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159 })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
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160
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161 ga('create', 'UA-91855-9', 'auto', 'nabble');
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162 ga('nabble.send', 'pageview');
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163 </script>
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164 <%
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165 }
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166
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167 }
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168 %>
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