ajax based add/remove/reset tag list

[phpfspot.git] / phpfspot.class.php

diff --git a/phpfspot.class.php b/phpfspot.class.php
index 1a344f465e66bd1b75b01a3a138e03bf59b1c4bb..379ad98f5c8b28354cc5a95b48549a443e0d5eff 100644 (file)
--- a/phpfspot.class.php
+++ b/phpfspot.class.php
@@ -10,8 +10,9 @@ class PHPFSPOT {
    var $db;
    var $tmpl;
    var $tags;
-   var $avail_photos;
+   var $avail_tags;
    var $photos;
+   var $avail_photos;
    var $current_photo;
    var $current_tags;
 
@@ -47,6 +48,9 @@ class PHPFSPOT {
 
    private function get_tags()
    {
+      $this->avail_tags = Array();
+      $count = 0;
+   
       $result = $this->db->db_query("
          SELECT id,name
          FROM tags
@@ -59,8 +63,12 @@ class PHPFSPOT {
          $tag_name = $row['name'];
 
          $this->tags[$tag_id] = $tag_name; 
+         $this->avail_tags[$count] = $tag_id;
+
+         $count++;
 
       }
+
    } // get_tags()
 
    private function get_photos()
@@ -125,6 +133,59 @@ class PHPFSPOT {
 
    } // prepare_single_photo()
 
+   public function getAvailableTags()
+   {
+      foreach($this->avail_tags as $tag)
+      {
+         if(isset($_SESSION['selected_tags']) && in_array($tag, $_SESSION['selected_tags']))
+            continue;
+
+         // return all available (= not selected) tags
+         print "<a href=\"javascript:Tags('add', ". $tag .");\">". $this->tags[$tag] ."</a>&nbsp;";
+
+      }
+
+   } // getAvailableTags()
+
+   public function getSelectedTags()
+   {
+      foreach($this->avail_tags as $tag)
+      {
+         // return all selected tags
+         if(isset($_SESSION['selected_tags']) && in_array($tag, $_SESSION['selected_tags'])) {
+            print "<a href=\"javascript:Tags('del', ". $tag .");\">". $this->tags[$tag] ."</a>&nbsp;";
+         }
+
+      }
+
+      print "<a href=\"javascript:Tags('reset', 0);\">Reset Tags</a>";
+
+   } // getSelectedTags()
+
+   public function addTag($tag)
+   {
+      if(!isset($_SESSION['selected_tags']))
+         $_SESSION['selected_tags'] = Array();
+
+      array_push($_SESSION['selected_tags'], $tag);
+   
+   } // addTag()
+
+   public function delTag($tag)
+   {
+      if(isset($_SESSION['selected_tags'])) {
+         $key = array_search($tag, $_SESSION['selected_tags']);
+         unset($_SESSION['selected_tags'][$key]);
+      }
+
+   } // delTag()
+
+   public function resetTags()
+   {
+      unset($_SESSION['selected_tags']);
+
+   } // resetTags()
+
 }
 
 ?>