removed mods directory from the ATutor codebase

[atutor.git] / mods / cpref_switch / ajax_save.php

diff --git a/mods/cpref_switch/ajax_save.php b/mods/cpref_switch/ajax_save.php
deleted file mode 100644 (file)
index e426e01..0000000
--- a/mods/cpref_switch/ajax_save.php
+++ /dev/null
@@ -1,88 +0,0 @@
-<?php
-include_once('module.inc.php');
-include_once(AT_INCLUDE_PATH."vitals.inc.php");
-
-/**
- * Performs input validation by confirming that the posted variable is one of the 
- * expected input variables. Returns a default variable AT_PREF_NONE if the input is invalid.
- * 
- * @param $post_var The posted variable
- * @param $expected An array of expected variables
- * @return Either the correct posted variable or AT_PREF_NONE if the posted variable is invalid
- */
-function check_post_var($post_var, $expected) {
-    $var = AT_PREF_NONE;
-    if (isset($post_var) && in_array($post_var, $expected)) {
-        $var = $post_var;
-    }
-    return $var;
-}
-
-/**
- * Checks if the content preference type changed from the user's current settings.
- * 
- * @param $post_var The content preference type posted.
- * @param $use_pref_name The name of the 'use content' preference (ie. PREF_USE_ALTERNATIVE_TO_TEXT).
- * @param $alternative_pref The name of the 'alternative content' preference (ie. PREF_ALT_TO_TEXT).
- * @return A boolean value false if the preference has not changed, true otherwise.
- */
-function isPrefChanged($post_var, $use_pref_name, $alternative_pref) {
-    if ($_SESSION['prefs'][$use_pref_name] == 0 && $post_var == AT_PREF_NONE) {
-        return false;
-    }
-    if ($_SESSION['prefs'][$use_pref_name] == 1 && $post_var == $_SESSION['prefs'][$alternative_pref]) {
-        return false;
-    }
-    return true;
-}
-
-/**
- * Changes a temporary array of preferences to reflect the new settings. Returns false if the preferences
- * have not changed and true otherwise.
- * 
- * @param $temp_prefs An array of preferences passed by reference.
- * @param $post_var The content preference posted.
- * @param $pref_type The type of content preference alternative to set, either "TEXT", "AUDIO" or "VISUAL".
- * @return A boolean value false if the preference has not changed, true otherwise.
- */
-function changePreference(&$temp_prefs, $post_var, $pref_type) {
-    $pref_changed = false;
-    if (isPrefChanged($post_var, 'PREF_USE_ALTERNATIVE_TO_'.$pref_type, 'PREF_ALT_TO_'.$pref_type)) {
-        $pref_changed = true;
-        if ($post_var == AT_PREF_NONE) {
-            //change the first setting and leave the rest as chosen by the user
-            $temp_prefs['PREF_USE_ALTERNATIVE_TO_'.$pref_type] = 0;
-            $temp_prefs['PREF_ALT_TO_'.$pref_type] = $_SESSION['prefs']['PREF_ALT_TO_'.$pref_type];
-            $temp_prefs['PREF_ALT_TO_'.$pref_type.'_APPEND_OR_REPLACE'] = $_SESSION['prefs']['PREF_ALT_TO_'.$pref_type.'_APPEND_OR_REPLACE'];
-            $temp_prefs['PREF_ALT_'.$pref_type.'_PREFER_LANG'] = $_SESSION['prefs']['PREF_ALT_'.$pref_type.'_PREFER_LANG'];
-        } else {
-            //change first two settings and leave the rest as chosen by the user
-            $temp_prefs['PREF_USE_ALTERNATIVE_TO_'.$pref_type] = 1;
-            $temp_prefs['PREF_ALT_TO_'.$pref_type] = $post_var;
-            $temp_prefs['PREF_ALT_TO_'.$pref_type.'_APPEND_OR_REPLACE'] = $_SESSION['prefs']['PREF_ALT_TO_'.$pref_type.'_APPEND_OR_REPLACE'];
-            $temp_prefs['PREF_ALT_'.$pref_type.'_PREFER_LANG'] = $_SESSION['prefs']['PREF_ALT_'.$pref_type.'_PREFER_LANG'];
-        }
-    }
-    return $pref_changed;
-}
-
-//do post variable input validation
-$alt_to_text = check_post_var($addslashes($_POST[AT_POST_ALT_TO_TEXT]), array(AT_PREF_NONE, AT_PREF_AUDIO, AT_PREF_VISUAL, AT_PREF_SIGN));
-$alt_to_audio = check_post_var($addslashes($_POST[AT_POST_ALT_TO_AUDIO]), array(AT_PREF_NONE, AT_PREF_TEXT, AT_PREF_VISUAL, AT_PREF_SIGN));
-$alt_to_visual = check_post_var($addslashes($_POST[AT_POST_ALT_TO_VISUAL]), array(AT_PREF_NONE, AT_PREF_TEXT, AT_PREF_AUDIO, AT_PREF_SIGN));
-
-//if preferences have changed then change $_SESSION variable
-//save settings if user is student
-$temp_prefs = $_SESSION['prefs'];
-$text_prefs_changed = changePreference($temp_prefs, $alt_to_text, "TEXT");
-$audio_prefs_changed = changePreference($temp_prefs, $alt_to_audio, "AUDIO");
-$visual_prefs_changed = changePreference($temp_prefs, $alt_to_visual, "VISUAL");
-
-$is_preferences_changed = $text_prefs_changed || $audio_prefs_changed || $visual_prefs_changed;
-if ($is_preferences_changed) {
-    assign_session_prefs($temp_prefs);
-    save_prefs(); 
-}
-
-echo $is_preferences_changed;
-?>
\ No newline at end of file