routeSQL : Add paginator

git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@2000 bf3deb0d-5f1a-0410-827f-c0cc1f45334c

routeSQL.php

@@ -96,6 +96,45 @@ class routeSQL
     return $dataflash;
   }
 
+  /** Display a paginator
+      $nbentries is the total number of elements
+      num is the number of elements displayed by page
+      page is the page to display */
+  private function paginator ($nbentries, $page, $num)
+  {
+    // The maximum of links available in the paginator
+    $maxClickPaginator = 10;
+    $prePage = false;
+    $postPage = false;
+    $content = "<div>";
+    $displayedNumbers = 0;
+    for ($i = 1 ; $i < ($nbentries/$num) ; $i++)
+    {
+      if ($i < ($page - $maxClickPaginator/2))
+      {
+        if ($prePage === false)
+          $content .= "... ";
+        $prePage = true;
+        continue;
+      }
+      if ($displayedNumbers >= $maxClickPaginator)
+      {
+        if ($postPage === false)
+          $content .= "... ";
+        $postPage = true;
+        continue;
+      }
+      $displayedNumbers++;
+      $content .= "<a href='".$this->url_prefix."?page=$i&amp;num=$num'";
+      if ($page == $i)
+        $content .= "style='background-color:#FFFF66;'";
+      $content .= ">$i</a> ";
+    }
+    $content .= "</div>";
+    return $content;
+  }
+
+  /** Create the routes and the associated actions */
   public function routes ()
   {
 	  /** Add HTML routes */
@@ -105,18 +144,34 @@ class routeSQL
       $route->redirect ("/".$this->url_prefix, "");
     });
 
-	  $route->get ($this->url_prefix, function () use ($route)
+	  $route->get ($this->url_prefix."(\?(page={page})?&?(num={num})?)?",
+      function ($page, $num) use ($route)
 	  {
 	    // LIST ALL THE OBJECTS OF THE TABLE
+      // num is the number of elements displayed by page
+      // page is the page to display
 	    $this->connect();
       $csrf = new csrf ();
       $token = $csrf->createToken ();
       $datas = $this->objectDB->read ();
       $titles = $this->objectDB->titles ();
+      if ($page === null || $page === "") $page = 1;
+      if ($num === null || $num === "") $num = 10;
+      if ($num > 1000)
+        $route->redirect ("/".$this->url_prefix."?page=$page&num=1000", "");
+      if ($page < 1)
+        $route->redirect ("/".$this->url_prefix."?page=1&num=$num", "");
+      // TODO : Push on the last page
+      if ($page*$num > count ($datas))
+      {
+        $route->redirect ("/".$this->url_prefix, "");
+      }
+      
       $content = $this->showflash ();
       if ($this->displayActions)
         $content .= "<a href='".$route->baseURL().$this->url_prefix."/add'>".
                    dgettext("domframework","Add new entry")."</a>\n";
+      $content .= $this->paginator(count ($datas), $page, $num);
       $content .= "<table>\n";
       $content .= "  <thead>\n";
       if ($this->displayActions && $this->actionsAtEnd === false)
@@ -135,8 +190,14 @@ class routeSQL
       }
       else
       {
+        $i = 1;
         foreach ($datas as $line)
         {
+          if ($i <= (($page-1)*$num) || $i > (($page-1)*$num + $num))
+          {
+            $i++;
+            continue;
+          }
           $content .= "    <tr>";
           if ($this->displayActions && $this->actionsAtEnd === false)
           {
@@ -171,6 +232,7 @@ class routeSQL
             $content .= "</td>";
           }
           $content .= "</tr>\n";
+          $i++;
         }
       }
       $content .= "  </tbody>\n";