Merge branch 'dialog'

33 files changed, 276 insertions, 179 deletions

diff --git a/lib/gallery.dialog.js b/lib/gallery.dialog.js
index cc35f5cd..f1d146ab 100644
--- a/lib/gallery.dialog.js
+++ b/lib/gallery.dialog.js
@@ -27,19 +27,42 @@
 
        $("#g-dialog").gallery_show_loading();
 
-       $.getJSON(sHref, function(data) {
-         $("#g-dialog").html(unescape(data.form)).gallery_show_loading();
+       $.ajax({
+         url: sHref,
+         type: "GET",
+         beforeSend: function(xhr) {
+           // Until we convert to jquery 1.4, we need to save the XMLHttpRequest object so that we
+	   // can detect the mime type of the reply
+           this.xhrData = xhr;
+         },
+         success: function(data, textStatus, xhr) {
+           // Pre jquery 1.4, get the saved XMLHttpRequest object
+           if (xhr == undefined) {
+             xhr = this.xhrData;
+           }
+           var mimeType = /^(\w+\/\w+)\;?/.exec(xhr.getResponseHeader("Content-Type"));
+
+           var content = "";
+           if (mimeType[1] == "application/json") {
+             data = JSON.parse(data);
+             content = unescape(data.form);
+           } else {
+             content = data;
+           }
 
-         if ($("#g-dialog form").length) {
-           self.form_loaded(null, $("#g-dialog form"));
-         }
-         self._layout();
+           $("#g-dialog").html(content).gallery_show_loading();
+
+           if ($("#g-dialog form").length) {
+             self.form_loaded(null, $("#g-dialog form"));
+           }
+           self._layout();
 
-         $("#g-dialog").dialog("open");
-         self._set_title();
+           $("#g-dialog").dialog("open");
+           self._set_title();
 
-         if ($("#g-dialog form").length) {
-           self._ajaxify_dialog();
+           if ($("#g-dialog form").length) {
+             self._ajaxify_dialog();
+           }
          }
        });
        $("#g-dialog").dialog("option", "self", self);
@@ -99,17 +122,42 @@
      _ajaxify_dialog: function() {
        var self = this;
        $("#g-dialog form").ajaxForm({
-         dataType: "json",
          beforeSubmit: function(formData, form, options) {
            form.find(":submit")
              .addClass("ui-state-disabled")
              .attr("disabled", "disabled");
            return true;
          },
+         beforeSend: function(xhr) {
+           // Until we convert to jquery 1.4, we need to save the XMLHttpRequest object so that we
+	   // can detect the mime type of the reply
+           this.xhrData = xhr;
+         },
          success: function(data) {
-           if (data.form) {
-             var formData = unescape(data.form);
-             $("#g-dialog form").replaceWith(formData);
+           // Pre jquery 1.4, get the saved XMLHttpRequest object
+           xhr = this.xhrData;
+	   if (xhr) {
+	     var mimeType = /^(\w+\/\w+)\;?/.exec(xhr.getResponseHeader("Content-Type"));
+
+	     var content = "";
+	     if (mimeType[1] == "application/json") {
+	       data = JSON.parse(data);
+	     } else {
+	       data = {"html": escape(data)};
+	     }
+	   } else {
+	     // Uploading files (eg: watermark) uses a fake xhr in jquery.form.js so
+	     // all we have is in the data field, which should be some very simple JSON.
+	     // Weirdly enough in Chrome the result gets wrapped in a <pre> element and
+	     // looks like this:
+	     //   <pre style="word-wrap: break-word; white-space: pre-wrap;">{"result":"success",
+	     //   "location":"\/~bharat\/gallery3\/index.php\/admin\/watermarks"}</pre>
+	     // bizarre.  Strip that off before parsing.
+	     data = JSON.parse(data.match("({.*})")[0]);
+	   }
+
+           if (data.html) {
+             $("#g-dialog").html(unescape(data.html));
              $("#g-dialog").dialog("option", "position", "center");
              $("#g-dialog form :submit").removeClass("ui-state-disabled")
                .attr("disabled", null);
diff --git a/lib/gallery.panel.js b/lib/gallery.panel.js
index b94df223..e0605ca3 100644
--- a/lib/gallery.panel.js
+++ b/lib/gallery.panel.js
@@ -31,15 +31,37 @@
 	 if (should_open) {
 	   $(parent).after(ePanel);
 	   $("#g-panel td").html(sHref);
-	   $.getJSON(sHref, function(data) {
-	     $("#g-panel td").html(unescape(data.form));
-	     self._ajaxify_panel();
-	     if ($(element).attr("open_text")) {
-	       $(element).attr("orig_text", $(element).children(".g-button-text").text());
-	       $(element).children(".g-button-text").text($(element).attr("open_text"));
+	   $.ajax({
+             url: sHref,
+             type: "GET",
+             beforeSend: function(xhr) {
+               // Until we convert to jquery 1.4, we need to save the
+               // XMLHttpRequest object
+               this.xhrData = xhr;
+             },
+             success: function(data, textStatus, xhr) {
+	       // Pre jquery 1.4, get the saved XMLHttpRequest object
+               if (xhr == undefined) {
+                 xhr = this.xhrData;
+               }
+               var mimeType = /^(\w+\/\w+)\;?/.exec(xhr.getResponseHeader("Content-Type"));
+               var content = "";
+               if (mimeType[1] == "application/json") {
+                 data = JSON.parse(data);
+                 content = unescape(data.html);
+               } else {
+                 content = data;
+               }
+
+	       $("#g-panel td").html(content);
+	       self._ajaxify_panel();
+	       if ($(element).attr("open_text")) {
+	         $(element).attr("orig_text", $(element).children(".g-button-text").text());
+	         $(element).children(".g-button-text").text($(element).attr("open_text"));
+	       }
+	       $("#g-panel").addClass(parentClass).show().slideDown("slow");
 	     }
-	     $("#g-panel").addClass(parentClass).show().slideDown("slow");
-	   });
+           });
 	 }
 
          return false;
@@ -57,8 +79,8 @@
            return true;
          },
          success: function(data) {
-           if (data.form) {
-             $("#g-panel td form").replaceWith(data.form);
+           if (data.html) {
+             $("#g-panel td").html(data.html);
              self._ajaxify_panel();
            }
            if (data.result == "success") {
diff --git a/modules/comment/controllers/admin_manage_comments.php b/modules/comment/controllers/admin_manage_comments.php
index bc1c9e64..e451791f 100644
--- a/modules/comment/controllers/admin_manage_comments.php
+++ b/modules/comment/controllers/admin_manage_comments.php
@@ -34,10 +34,10 @@ class Admin_Manage_Comments_Controller extends Admin_Controller {
 
   public function menu_labels() {
     $menu = $this->_menu($this->_counts());
-    print json_encode(array((string) $menu->get("unpublished")->label,
-                            (string) $menu->get("published")->label,
-                            (string) $menu->get("spam")->label,
-                            (string) $menu->get("deleted")->label));
+    json::reply(array((string) $menu->get("unpublished")->label,
+		      (string) $menu->get("published")->label,
+		      (string) $menu->get("spam")->label,
+		      (string) $menu->get("deleted")->label));
   }
 
   public function queue($state) {
diff --git a/modules/comment/controllers/comments.php b/modules/comment/controllers/comments.php
index c42ad24e..6ec4132b 100644
--- a/modules/comment/controllers/comments.php
+++ b/modules/comment/controllers/comments.php
@@ -56,13 +56,12 @@ class Comments_Controller extends Controller {
       $view = new Theme_View("comment.html", "other", "comment-fragment");
       $view->comment = $comment;
 
-      print json_encode(
-        array("result" => "success",
-              "view" => (string) $view,
-              "form" => (string) comment::get_add_form($item)));
+      json::reply(array("result" => "success",
+			"view" => (string)$view,
+			"form" => (string)comment::get_add_form($item)));
     } else {
       $form = comment::prefill_add_form($form);
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "form" => (string)$form));
     }
   }
 
diff --git a/modules/exif/controllers/exif.php b/modules/exif/controllers/exif.php
index fe5b2ff4..2fe875e3 100644
--- a/modules/exif/controllers/exif.php
+++ b/modules/exif/controllers/exif.php
@@ -28,6 +28,6 @@ class Exif_Controller extends Controller {
     $view = new View("exif_dialog.html");
     $view->details = exif::get($item);
 
-    print json_encode(array("form" => (string) $view));
+    print $view;
   }
 }
diff --git a/modules/gallery/controllers/admin.php b/modules/gallery/controllers/admin.php
index eacacb28..8fc5432d 100644
--- a/modules/gallery/controllers/admin.php
+++ b/modules/gallery/controllers/admin.php
@@ -78,7 +78,7 @@ class Admin_Controller extends Controller {
       $result->location = url::abs_site("");
     }
 
-    print json_encode($result);
+    json::reply($result);
   }
 
   private static function _prompt_for_reauth($controller_name, $args) {
@@ -86,7 +86,8 @@ class Admin_Controller extends Controller {
       // Avoid anti-phishing protection by passing the url as session variable.
       Session::instance()->set("continue_url", url::abs_current(true));
     }
-
+    // Save the is_ajax value as we lose it, if set, when we redirect
+    Session::instance()->set("is_ajax_request", request::is_ajax());
     url::redirect("reauthenticate");
   }
 }
diff --git a/modules/gallery/controllers/admin_advanced_settings.php b/modules/gallery/controllers/admin_advanced_settings.php
index 2bbbdf50..cf197743 100644
--- a/modules/gallery/controllers/admin_advanced_settings.php
+++ b/modules/gallery/controllers/admin_advanced_settings.php
@@ -39,7 +39,7 @@ class Admin_Advanced_Settings_Controller extends Admin_Controller {
     $group->input("var_name")->label(t("Setting"))->value($var_name)->disabled(1);
     $group->textarea("value")->label(t("Value"))->value($value);
     $group->submit("")->value(t("Save"));
-    print json_encode(array("form" => (string) $form));
+    print $form;
   }
 
   public function save($module_name, $var_name) {
@@ -50,6 +50,6 @@ class Admin_Advanced_Settings_Controller extends Admin_Controller {
       t("Saved value for %var (%module_name)",
         array("var" => $var_name, "module_name" => $module_name)));
 
-    print json_encode(array("result" => "success"));
+    json::reply(array("result" => "success"));
   }
 }
diff --git a/modules/gallery/controllers/admin_languages.php b/modules/gallery/controllers/admin_languages.php
index 2e993816..573ededf 100644
--- a/modules/gallery/controllers/admin_languages.php
+++ b/modules/gallery/controllers/admin_languages.php
@@ -51,7 +51,7 @@ class Admin_Languages_Controller extends Admin_Controller {
     }
     module::set_var("gallery", "default_locale", $new_default_locale);
 
-    print json_encode(array("result" => "success"));
+    json::reply(array("result" => "success"));
   }
 
   public function share() {
diff --git a/modules/gallery/controllers/admin_maintenance.php b/modules/gallery/controllers/admin_maintenance.php
index 489f5d54..3567b4f0 100644
--- a/modules/gallery/controllers/admin_maintenance.php
+++ b/modules/gallery/controllers/admin_maintenance.php
@@ -64,7 +64,7 @@ class Admin_Maintenance_Controller extends Admin_Controller {
     log::info("tasks", t("Task %task_name started (task id %task_id)",
                          array("task_name" => $task->name, "task_id" => $task->id)),
               html::anchor("admin/maintenance", t("maintenance")));
-    print json_encode(array("form" => (string) $view));
+    print $view;
   }
 
   /**
@@ -86,7 +86,7 @@ class Admin_Maintenance_Controller extends Admin_Controller {
     log::info("tasks", t("Task %task_name resumed (task id %task_id)",
                          array("task_name" => $task->name, "task_id" => $task->id)),
               html::anchor("admin/maintenance", t("maintenance")));
-    print json_encode(array("form" => (string) $view));
+    print $view;
   }
 
   /**
@@ -103,7 +103,7 @@ class Admin_Maintenance_Controller extends Admin_Controller {
     $view = new View("admin_maintenance_show_log.html");
     $view->task = $task;
 
-    print json_encode(array("form" => (string) $view));
+    print $view;
   }
 
   /**
@@ -211,19 +211,19 @@ class Admin_Maintenance_Controller extends Admin_Controller {
         break;
       }
       // Using sprintf("%F") to avoid comma as decimal separator.
-      print json_encode(array("result" => "success",
-                              "task" => array(
-                                "percent_complete" => sprintf("%F", $task->percent_complete),
-                                "status" => (string) $task->status,
-                                "done" => (bool) $task->done),
-                              "location" => url::site("admin/maintenance")));
+      json::reply(array("result" => "success",
+                        "task" => array(
+                          "percent_complete" => sprintf("%F", $task->percent_complete),
+                          "status" => (string) $task->status,
+                          "done" => (bool) $task->done),
+                        "location" => url::site("admin/maintenance")));
 
     } else {
-      print json_encode(array("result" => "in_progress",
-                              "task" => array(
-                                "percent_complete" => sprintf("%F", $task->percent_complete),
-                                "status" => (string) $task->status,
-                                "done" => (bool) $task->done)));
+      json::reply(array("result" => "in_progress",
+                        "task" => array(
+                          "percent_complete" => sprintf("%F", $task->percent_complete),
+                          "status" => (string) $task->status,
+                          "done" => (bool) $task->done)));
     }
   }
 }
diff --git a/modules/gallery/controllers/admin_modules.php b/modules/gallery/controllers/admin_modules.php
index bf638a37..f5af9a5a 100644
--- a/modules/gallery/controllers/admin_modules.php
+++ b/modules/gallery/controllers/admin_modules.php
@@ -57,7 +57,7 @@ class Admin_Modules_Controller extends Admin_Controller {
       $result["dialog"] = (string)$v;
       $result["allow_continue"] = empty($messages["error"]);
     }
-    print json_encode($result);
+    json::reply($result);
   }
 
   public function save() {
diff --git a/modules/gallery/controllers/admin_sidebar.php b/modules/gallery/controllers/admin_sidebar.php
index fb857e4e..2e49097a 100644
--- a/modules/gallery/controllers/admin_sidebar.php
+++ b/modules/gallery/controllers/admin_sidebar.php
@@ -50,7 +50,7 @@ class Admin_Sidebar_Controller extends Admin_Controller {
     $result["active"] = $v->render();
     $message = t("Updated sidebar blocks");
     $result["message"] = (string) $message;
-    print json_encode($result);
+    json::reply($result);
   }
 
   private function _get_blocks() {
diff --git a/modules/gallery/controllers/admin_themes.php b/modules/gallery/controllers/admin_themes.php
index b1bd438f..e59eadaf 100644
--- a/modules/gallery/controllers/admin_themes.php
+++ b/modules/gallery/controllers/admin_themes.php
@@ -52,7 +52,7 @@ class Admin_Themes_Controller extends Admin_Controller {
     } else {
       $view->url = item::root()->url("theme=$theme_name");
     }
-    print json_encode(array("form" => (string) $view));
+    print $view;
   }
 
   public function choose($type, $theme_name) {
diff --git a/modules/gallery/controllers/albums.php b/modules/gallery/controllers/albums.php
index 8aed1341..f3f5dee3 100644
--- a/modules/gallery/controllers/albums.php
+++ b/modules/gallery/controllers/albums.php
@@ -113,9 +113,9 @@ class Albums_Controller extends Items_Controller {
       message::success(t("Created album %album_title",
                          array("album_title" => html::purify($album->title))));
 
-      print json_encode(array("result" => "success", "location" => $album->url()));
+      json::reply(array("result" => "success", "location" => $album->url()));
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      print $form;
     }
   }
 
@@ -153,13 +153,13 @@ class Albums_Controller extends Items_Controller {
 
       if ($form->from_id->value == $album->id) {
         // Use the new url; it might have changed.
-        print json_encode(array("result" => "success", "location" => $album->url()));
+        json::reply(array("result" => "success", "location" => $album->url()));
       } else {
         // Stay on the same page
-        print json_encode(array("result" => "success"));
+        json::reply(array("result" => "success"));
       }
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "html" => (string)$form));
     }
   }
 
@@ -168,7 +168,7 @@ class Albums_Controller extends Items_Controller {
     access::required("view", $album);
     access::required("add", $album);
 
-    print json_encode(array("form" => (string) album::get_add_form($album)));
+    print album::get_add_form($album);
   }
 
   public function form_edit($album_id) {
@@ -176,6 +176,6 @@ class Albums_Controller extends Items_Controller {
     access::required("view", $album);
     access::required("edit", $album);
 
-    print json_encode(array("form" => (string) album::get_edit_form($album)));
+    print album::get_edit_form($album);
   }
 }
diff --git a/modules/gallery/controllers/l10n_client.php b/modules/gallery/controllers/l10n_client.php
index d5b322ef..6833a9ae 100644
--- a/modules/gallery/controllers/l10n_client.php
+++ b/modules/gallery/controllers/l10n_client.php
@@ -91,7 +91,7 @@ class L10n_Client_Controller extends Controller {
 
     Gallery_I18n::clear_cache($locale);
 
-    print json_encode(new stdClass());
+    json::reply(new stdClass());
   }
 
   public function toggle_l10n_mode() {
diff --git a/modules/gallery/controllers/login.php b/modules/gallery/controllers/login.php
index b823504b..62d33345 100644
--- a/modules/gallery/controllers/login.php
+++ b/modules/gallery/controllers/login.php
@@ -22,7 +22,7 @@ class Login_Controller extends Controller {
   public function ajax() {
     $view = new View("login_ajax.html");
     $view->form = auth::get_login_form("login/auth_ajax");
-    print json_encode(array("form" => (string) $view));
+    print $view;
   }
 
   public function auth_ajax() {
@@ -30,10 +30,11 @@ class Login_Controller extends Controller {
 
     list ($valid, $form) = $this->_auth("login/auth_ajax");
     if ($valid) {
-      print json_encode(
-        array("result" => "success"));
+      json::reply(array("result" => "success"));
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      $view = new View("login_ajax.html");
+      $view->form = $form;
+      json::reply(array("result" => "error", "html" => (string)$view));
     }
   }
 
diff --git a/modules/gallery/controllers/move.php b/modules/gallery/controllers/move.php
index a99ef341..7b2d6165 100644
--- a/modules/gallery/controllers/move.php
+++ b/modules/gallery/controllers/move.php
@@ -26,7 +26,7 @@ class Move_Controller extends Controller {
     $view = new View("move_browse.html");
     $view->source = $source;
     $view->tree = $this->_get_tree_html($source, ORM::factory("item", 1));
-    print json_encode(array("form" => (string) $view));
+    print $view;
   }
 
   public function save($source_id) {
@@ -41,9 +41,7 @@ class Move_Controller extends Controller {
 
     item::move($source, $target);
 
-    print json_encode(
-      array("result" => "success",
-            "location" => $target->url()));
+    json::reply(array("result" => "success", "location" => $target->url()));
   }
 
   public function show_sub_tree($source_id, $target_id) {
diff --git a/modules/gallery/controllers/movies.php b/modules/gallery/controllers/movies.php
index c18dbcde..02d2a497 100644
--- a/modules/gallery/controllers/movies.php
+++ b/modules/gallery/controllers/movies.php
@@ -87,13 +87,13 @@ class Movies_Controller extends Items_Controller {
 
       if ($form->from_id->value == $movie->id) {
         // Use the new url; it might have changed.
-        print json_encode(array("result" => "success", "location" => $movie->url()));
+        json::reply(array("result" => "success", "location" => $movie->url()));
       } else {
         // Stay on the same page
-        print json_encode(array("result" => "success"));
+        json::reply(array("result" => "success"));
       }
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "html" => (string) $form));
     }
   }
 
@@ -102,6 +102,6 @@ class Movies_Controller extends Items_Controller {
     access::required("view", $movie);
     access::required("edit", $movie);
 
-    print json_encode(array("form" => (string) movie::get_edit_form($movie)));
+    print movie::get_edit_form($movie);
   }
 }
diff --git a/modules/gallery/controllers/permissions.php b/modules/gallery/controllers/permissions.php
index 8fdda7b2..fc06cb44 100644
--- a/modules/gallery/controllers/permissions.php
+++ b/modules/gallery/controllers/permissions.php
@@ -33,7 +33,7 @@ class Permissions_Controller extends Controller {
     $view->parents = $item->parents();
     $view->form = $this->_get_form($item);
 
-    print json_encode(array("form" => (string) $view));
+    print $view;
   }
 
   function form($id) {
diff --git a/modules/gallery/controllers/photos.php b/modules/gallery/controllers/photos.php
index 9f17cebb..8377e6c7 100644
--- a/modules/gallery/controllers/photos.php
+++ b/modules/gallery/controllers/photos.php
@@ -87,13 +87,13 @@ class Photos_Controller extends Items_Controller {
 
       if ($form->from_id->value == $photo->id) {
         // Use the new url; it might have changed.
-        print json_encode(array("result" => "success", "location" => $photo->url()));
+        json::reply(array("result" => "success", "location" => $photo->url()));
       } else {
         // Stay on the same page
-        print json_encode(array("result" => "success"));
+        json::reply(array("result" => "success"));
       }
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "html" => (string)$form));
     }
   }
 
@@ -102,6 +102,6 @@ class Photos_Controller extends Items_Controller {
     access::required("view", $photo);
     access::required("edit", $photo);
 
-    print json_encode(array("form" => (string) photo::get_edit_form($photo)));
+    print photo::get_edit_form($photo);
   }
 }
diff --git a/modules/gallery/controllers/quick.php b/modules/gallery/controllers/quick.php
index 253a279b..fee601d9 100644
--- a/modules/gallery/controllers/quick.php
+++ b/modules/gallery/controllers/quick.php
@@ -58,12 +58,12 @@ class Quick_Controller extends Controller {
     }
 
     if (Input::instance()->get("page_type") == "collection") {
-      print json_encode(
+      json::reply(
         array("src" => $item->thumb_url(),
               "width" => $item->thumb_width,
               "height" => $item->thumb_height));
     } else {
-      print json_encode(
+      json::reply(
         array("src" => $item->resize_url(),
               "width" => $item->resize_width,
               "height" => $item->resize_height));
@@ -83,7 +83,7 @@ class Quick_Controller extends Controller {
     item::make_album_cover($item);
     message::success($msg);
 
-    print json_encode(array("result" => "success", "reload" => 1));
+    json::reply(array("result" => "success", "reload" => 1));
   }
 
   public function form_delete($id) {
@@ -94,7 +94,7 @@ class Quick_Controller extends Controller {
     $v = new View("quick_delete_confirm.html");
     $v->item = $item;
     $v->form = item::get_delete_form($item);
-    print json_encode(array("form" => (string) $v));
+    print $v;
   }
 
   public function delete($id) {
@@ -125,10 +125,9 @@ class Quick_Controller extends Controller {
     $from_id = Input::instance()->get("from_id");
     if (Input::instance()->get("page_type") == "collection" &&
         $from_id != $id /* deleted the item we were viewing */) {
-      print json_encode(array("result" => "success", "reload" => 1));
+      json::reply(array("result" => "success", "reload" => 1));
     } else {
-      print json_encode(array("result" => "success",
-                              "location" => $parent->url()));
+      json::reply(array("result" => "success", "location" => $parent->url()));
     }
   }
 
@@ -154,6 +153,6 @@ class Quick_Controller extends Controller {
     // Pass on the source item where this form was generated, so we have an idea where to return to.
     $form->hidden("from_id")->value((int)Input::instance()->get("from_id", 0));
 
-    print json_encode(array("form" => (string) $form));
+    print $form;
   }
 }
diff --git a/modules/gallery/controllers/reauthenticate.php b/modules/gallery/controllers/reauthenticate.php
index 3cff2b6a..0486c0fe 100644
--- a/modules/gallery/controllers/reauthenticate.php
+++ b/modules/gallery/controllers/reauthenticate.php
@@ -18,12 +18,18 @@
  * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
  */
 class Reauthenticate_Controller extends Controller {
-  public function index($share_translations_form=null) {
+  public function index() {
     if (!identity::active_user()->admin) {
       access::forbidden();
     }
-    if (request::is_ajax()) {
-      print json_encode(array("form" => (string) self::_form()));
+    // On redirects from the admin controller, the ajax request indicator is lost,
+    // so we store it in the session.
+    $is_ajax = Session::instance()->get_once("is_ajax_request", request::is_ajax());
+    if ($is_ajax) {
+      $v = new View("reauthenticate.html");
+      $v->form = self::_form();
+      $v->user_name = identity::active_user()->name;
+      print $v;
     } else {
       self::_show_form(self::_form());
     }
@@ -48,10 +54,13 @@ class Reauthenticate_Controller extends Controller {
       $name = $user->name;
       log::warning("user", t("Failed re-authentication for %name", array("name" => $name)));
       module::event("user_auth_failed", $name);
-      if (empty($reauthenticate["in_dialog"])) {
-        self::_show_form($form);
+      if (request::is_ajax()) {
+        $v = new View("reauthenticate.html");
+        $v->form = $form;
+        $v->user_name = identity::active_user()->name;
+        json::reply(array("html" => (string)$v));
       } else {
-        print json_encode(array("form" => (string) $form));
+        self::_show_form($form);
       }
     }
   }
diff --git a/modules/gallery/controllers/uploader.php b/modules/gallery/controllers/uploader.php
index 38e22cee..87520032 100644
--- a/modules/gallery/controllers/uploader.php
+++ b/modules/gallery/controllers/uploader.php
@@ -26,8 +26,7 @@ class Uploader_Controller extends Controller {
       $item = $item->parent();
     }
 
-    print json_encode(array("form" => (string)$this->_get_add_form($item)));
-    //print $this->_get_add_form($item);
+    print $this->_get_add_form($item);
   }
 
   public function start() {
@@ -106,7 +105,7 @@ class Uploader_Controller extends Controller {
     access::verify_csrf();
 
     batch::stop();
-    print json_encode(array("result" => "success"));
+    json::reply(array("result" => "success"));
   }
 
   private function _get_add_form($album)  {
diff --git a/modules/gallery/controllers/user_profile.php b/modules/gallery/controllers/user_profile.php
index 431918ff..726d3e51 100644
--- a/modules/gallery/controllers/user_profile.php
+++ b/modules/gallery/controllers/user_profile.php
@@ -44,7 +44,7 @@ class User_Profile_Controller extends Controller {
 
   public function contact($id) {
     $user = identity::lookup_user($id);
-    print json_encode(array("form" => (string) user_profile::get_contact_form($user)));
+    print user_profile::get_contact_form($user);
   }
 
   public function send($id) {
@@ -61,9 +61,9 @@ class User_Profile_Controller extends Controller {
         ->message(html::purify($form->message->message->value))
         ->send();
       message::success(t("Sent message to %user_name", array("user_name" => $user->display_name())));
-      print json_encode(array("result" => "success"));
+      json::reply(array("result" => "success"));
     } else {
-      print json_encode(array("result" => "error", "form" => (string)$form));
+      json::reply(array("result" => "error", "html" => (string)$form));
     }
   }
 }
diff --git a/modules/gallery/helpers/json.php b/modules/gallery/helpers/json.php
new file mode 100644
index 00000000..a39db27a
--- /dev/null
+++ b/modules/gallery/helpers/json.php
@@ -0,0 +1,33 @@
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2000-2010 Bharat Mediratta
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+class json_Core {
+  /**
+   * JSON Encode a reply to the browser and set the content type to specify that it's a JSON
+   * payload.
+   *
+   * @param  mixed $message string or object to json encode and print
+   */
+  static function reply($message) {
+    if (!headers_sent()) {
+      header("Content-Type: application/json; charset=" . Kohana::CHARSET);
+    }
+    print json_encode($message);
+  }
+}
\ No newline at end of file
diff --git a/modules/organize/controllers/organize.php b/modules/organize/controllers/organize.php
index 0e647e09..3005eb67 100644
--- a/modules/organize/controllers/organize.php
+++ b/modules/organize/controllers/organize.php
@@ -47,14 +47,14 @@ class Organize_Controller extends Controller {
     $v->controller_uri = url::site("organize") . "/";
     $v->swf_uri = url::file("modules/organize/lib/Gallery3WebClient.swf?") .
       filemtime(MODPATH . "organize/lib/Gallery3WebClient.swf");
-    print json_encode(array("form" => (string) $v));
+    print $v;
   }
 
   function add_album_fields() {
-    print json_encode(array("title" => (string)t("Title"),
-                            "description" => (string)t("Description"),
-                            "name" => (string)t("Directory name"),
-                            "slug" => (string)t("Internet Address")));
+    json::reply(array("title" => (string)t("Title"),
+                      "description" => (string)t("Description"),
+                      "name" => (string)t("Directory name"),
+                      "slug" => (string)t("Internet Address")));
   }
 
 }
diff --git a/modules/rest/helpers/rest.php b/modules/rest/helpers/rest.php
index bcb12d58..644779da 100644
--- a/modules/rest/helpers/rest.php
+++ b/modules/rest/helpers/rest.php
@@ -35,8 +35,7 @@ class rest_Core {
       }
       print "<pre>$html</pre>";
     } else {
-      header("Content-type: application/json");
-      print json_encode($data);
+      json::reply($data);
     }
   }
 
diff --git a/modules/server_add/controllers/server_add.php b/modules/server_add/controllers/server_add.php
index e91d9dd9..e4c3e69c 100644
--- a/modules/server_add/controllers/server_add.php
+++ b/modules/server_add/controllers/server_add.php
@@ -30,7 +30,7 @@ class Server_Add_Controller extends Admin_Controller {
     $view->tree = new View("server_add_tree.html");
     $view->tree->files = $files;
     $view->tree->parents = array();
-    print json_encode(array("form" => (string) $view));
+    print $view;
   }
 
   public function children() {
@@ -91,7 +91,7 @@ class Server_Add_Controller extends Admin_Controller {
       ->name(t("Add from server"));
     $task = task::create($task_def, array("item_id" => $item->id, "queue" => $paths));
 
-    print json_encode(
+    json::reply(
       array("result" => "started",
             "status" => (string)$task->status,
             "url" => url::site("server_add/run/$task->id?csrf=" . access::csrf_token())));
@@ -111,9 +111,9 @@ class Server_Add_Controller extends Admin_Controller {
     $task = task::run($task_id);
     // Prevent the JavaScript code from breaking by forcing a period as
     // decimal separator for all locales with sprintf("%F", $value).
-    print json_encode(array("done" => (bool)$task->done,
-                            "status" => (string)$task->status,
-                            "percent_complete" => sprintf("%F", $task->percent_complete)));
+    json::reply(array("done" => (bool)$task->done,
+                      "status" => (string)$task->status,
+                      "percent_complete" => sprintf("%F", $task->percent_complete)));
   }
 
   /**
diff --git a/modules/tag/controllers/admin_tags.php b/modules/tag/controllers/admin_tags.php
index c2da7bc3..0c82579b 100644
--- a/modules/tag/controllers/admin_tags.php
+++ b/modules/tag/controllers/admin_tags.php
@@ -37,7 +37,7 @@ class Admin_Tags_Controller extends Admin_Controller {
   public function form_delete($id) {
     $tag = ORM::factory("tag", $id);
     if ($tag->loaded()) {
-      print json_encode(array("form" => (string) tag::get_delete_form($tag)));
+      print tag::get_delete_form($tag);
     }
   }
 
@@ -57,11 +57,9 @@ class Admin_Tags_Controller extends Admin_Controller {
       message::success(t("Deleted tag %tag_name", array("tag_name" => $name)));
       log::success("tags", t("Deleted tag %tag_name", array("tag_name" => $name)));
 
-      print json_encode(
-        array("result" => "success",
-              "location" => url::site("admin/tags")));
+      json::reply(array("result" => "success", "location" => url::site("admin/tags")));
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      print $form;
     }
   }
 
@@ -93,15 +91,14 @@ class Admin_Tags_Controller extends Admin_Controller {
       $tag->name = $in_place_edit->value();
       $tag->save();
 
-      $message = t("Renamed tag %old_name to %new_name",
+      $message = t("Renamed tag <b>%old_name</b> to <b>%new_name</b>",
                    array("old_name" => $old_name, "new_name" => $tag->name));
       message::success($message);
       log::success("tags", $message);
 
-      print json_encode(array("result" => "success",
-              "location" => url::site("admin/tags")));
+      json::reply(array("result" => "success", "location" => url::site("admin/tags")));
     } else {
-      print json_encode(array("result" => "error", "form" => $in_place_edit->render()));
+      json::reply(array("result" => "error", "form" => (string)$in_place_edit->render()));
     }
   }
 
diff --git a/modules/tag/controllers/tags.php b/modules/tag/controllers/tags.php
index f3d456d3..bc657644 100644
--- a/modules/tag/controllers/tags.php
+++ b/modules/tag/controllers/tags.php
@@ -67,11 +67,9 @@ class Tags_Controller extends Controller {
         }
       }
 
-      print json_encode(
-        array("result" => "success",
-              "cloud" => (string)tag::cloud(30)));
+      json::reply(array("result" => "success", "cloud" => (string)tag::cloud(30)));
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "html" => (string)$form));
     }
   }
 
diff --git a/modules/user/controllers/admin_users.php b/modules/user/controllers/admin_users.php
index a882eb2b..24478aa5 100644
--- a/modules/user/controllers/admin_users.php
+++ b/modules/user/controllers/admin_users.php
@@ -54,14 +54,14 @@ class Admin_Users_Controller extends Admin_Controller {
       $user->save();
       module::event("user_add_form_admin_completed", $user, $form);
       message::success(t("Created user %user_name", array("user_name" => $user->name)));
-      print json_encode(array("result" => "success"));
+      json::reply(array("result" => "success"));
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      print json::reply(array("result" => "error", "html" => (string)$form));
     }
   }
 
   public function add_user_form() {
-    print json_encode(array("form" => (string) $this->_get_user_add_form_admin()));
+    print $this->_get_user_add_form_admin();
   }
 
   public function delete_user($id) {
@@ -81,13 +81,13 @@ class Admin_Users_Controller extends Admin_Controller {
       $name = $user->name;
       $user->delete();
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "html" => (string)$form));
     }
 
     $message = t("Deleted user %user_name", array("user_name" => $name));
     log::success("user", $message);
     message::success($message);
-    print json_encode(array("result" => "success"));
+    json::reply(array("result" => "success"));
   }
 
   public function delete_user_form($id) {
@@ -95,7 +95,7 @@ class Admin_Users_Controller extends Admin_Controller {
     if (empty($user)) {
       throw new Kohana_404_Exception();
     }
-    print json_encode(array("form" => (string) $this->_get_user_delete_form_admin($user)));
+    print $this->_get_user_delete_form_admin($user);
   }
 
   public function edit_user($id) {
@@ -134,9 +134,9 @@ class Admin_Users_Controller extends Admin_Controller {
       $user->save();
       module::event("user_edit_form_admin_completed", $user, $form);
       message::success(t("Changed user %user_name", array("user_name" => $user->name)));
-      print json_encode(array("result" => "success"));
+      json::reply(array("result" => "success"));
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "html" => (string) $form));
     }
   }
 
@@ -146,7 +146,7 @@ class Admin_Users_Controller extends Admin_Controller {
       throw new Kohana_404_Exception();
     }
 
-    print json_encode(array("form" => (string) $this->_get_user_edit_form_admin($user)));
+    print $this->_get_user_edit_form_admin($user);
   }
 
   public function add_user_to_group($user_id, $group_id) {
@@ -192,14 +192,14 @@ class Admin_Users_Controller extends Admin_Controller {
       $group->save();
       message::success(
         t("Created group %group_name", array("group_name" => $group->name)));
-      print json_encode(array("result" => "success"));
+      json::reply(array("result" => "success"));
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "html" => (string)$form));
     }
   }
 
   public function add_group_form() {
-    print json_encode(array("form" => (string) $this->_get_group_add_form_admin()));
+    print $this->_get_group_add_form_admin();
   }
 
   public function delete_group($id) {
@@ -215,13 +215,13 @@ class Admin_Users_Controller extends Admin_Controller {
       $name = $group->name;
       $group->delete();
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "html" => (string) $form));
     }
 
     $message = t("Deleted group %group_name", array("group_name" => $name));
     log::success("group", $message);
     message::success($message);
-    print json_encode(array("result" => "success"));
+    json::reply(array("result" => "success"));
   }
 
   public function delete_group_form($id) {
@@ -230,7 +230,7 @@ class Admin_Users_Controller extends Admin_Controller {
       throw new Kohana_404_Exception();
     }
 
-    print json_encode(array("form" => (string) $this->_get_group_delete_form_admin($group)));
+    print $this->_get_group_delete_form_admin($group);
   }
 
   public function edit_group($id) {
@@ -258,12 +258,12 @@ class Admin_Users_Controller extends Admin_Controller {
       $group->save();
       message::success(
         t("Changed group %group_name", array("group_name" => $group->name)));
-      print json_encode(array("result" => "success"));
+      json::reply(array("result" => "success"));
     } else {
       $group->reload();
       message::error(
         t("Failed to change group %group_name", array("group_name" => $group->name)));
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "html" => (string) $form));
     }
   }
 
@@ -273,7 +273,7 @@ class Admin_Users_Controller extends Admin_Controller {
       throw new Kohana_404_Exception();
     }
 
-    print json_encode(array("form" => (string) $this->_get_group_edit_form_admin($group)));
+    print $this->_get_group_edit_form_admin($group);
   }
 
   /* User Form Definitions */
@@ -310,7 +310,7 @@ class Admin_Users_Controller extends Admin_Controller {
     }
 
     module::event("user_edit_form_admin", $user, $form);
-    $group->submit("")->value(t("Modify User"));
+    $group->submit("")->value(t("Modify user"));
     return $form;
   }
 
@@ -355,7 +355,7 @@ class Admin_Users_Controller extends Admin_Controller {
     $locales = array_merge(array("" => t("« none »")), $locales);
     $selected_locale = ($user && $user->locale) ? $user->locale : "";
     $form->dropdown("locale")
-      ->label(t("Language Preference"))
+      ->label(t("Language preference"))
       ->options($locales)
       ->selected($selected_locale);
   }
diff --git a/modules/user/controllers/password.php b/modules/user/controllers/password.php
index 522b6b35..575720a8 100644
--- a/modules/user/controllers/password.php
+++ b/modules/user/controllers/password.php
@@ -27,8 +27,7 @@ class Password_Controller extends Controller {
       if ($form->validate()) {
         $this->_send_reset($form);
       } else {
-        print json_encode(array("result" => "error",
-                                "form" => (string) $form));
+        json::reply(array("result" => "error", "html" => (string)$form));
       }
     } else {
       print $form;
@@ -83,8 +82,7 @@ class Password_Controller extends Controller {
     // Always pretend that an email has been sent to avoid leaking
     // information on what user names are actually real.
     message::success(t("Password reset email sent"));
-    print json_encode(
-      array("result" => "success"));
+    json::reply(array("result" => "success"));
   }
 
   private static function _reset_form() {
diff --git a/modules/user/controllers/users.php b/modules/user/controllers/users.php
index 4ddfb47c..d13cccb2 100644
--- a/modules/user/controllers/users.php
+++ b/modules/user/controllers/users.php
@@ -54,11 +54,10 @@ class Users_Controller extends Controller {
       $user->save();
       module::event("user_edit_form_completed", $user, $form);
       message::success(t("User information updated"));
-      print json_encode(
-        array("result" => "success",
-              "resource" => url::site("users/{$user->id}")));
+      json::reply(array("result" => "success",
+			"resource" => url::site("users/{$user->id}")));
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "html" => (string)$form));
     }
   }
 
@@ -87,14 +86,13 @@ class Users_Controller extends Controller {
       message::success(t("Password changed"));
       module::event("user_auth", $user);
       module::event("user_password_change", $user);
-      print json_encode(
-        array("result" => "success",
-              "resource" => url::site("users/{$user->id}")));
+      json::reply(array("result" => "success",
+			"resource" => url::site("users/{$user->id}")));
     } else {
       log::warning("user", t("Failed password change for %name", array("name" => $user->name)));
       $name = $user->name;
       module::event("user_auth_failed", $name);
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "html" => (string)$form));
     }
   }
 
@@ -122,14 +120,13 @@ class Users_Controller extends Controller {
       module::event("user_change_email_form_completed", $user, $form);
       message::success(t("Email address changed"));
       module::event("user_auth", $user);
-      print json_encode(
-        array("result" => "success",
-              "resource" => url::site("users/{$user->id}")));
+      json::reply(array("result" => "success",
+			"resource" => url::site("users/{$user->id}")));
     } else {
       log::warning("user", t("Failed email change for %name", array("name" => $user->name)));
       $name = $user->name;
       module::event("user_auth_failed", $name);
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "html" => (string)$form));
     }
   }
 
@@ -139,7 +136,7 @@ class Users_Controller extends Controller {
       access::forbidden();
     }
 
-    print json_encode(array("form" => (string) $this->_get_edit_form($user)));
+    print $this->_get_edit_form($user);
   }
 
   public function form_change_password($id) {
@@ -148,7 +145,7 @@ class Users_Controller extends Controller {
       access::forbidden();
     }
 
-    print json_encode(array("form" => (string) $this->_get_change_password_form($user)));
+    print $this->_get_change_password_form($user);
   }
 
   public function form_change_email($id) {
@@ -157,7 +154,7 @@ class Users_Controller extends Controller {
       access::forbidden();
     }
 
-    print json_encode(array("form" => (string) $this->_get_change_email_form($user)));
+    print $this->_get_change_email_form($user);
   }
 
   private function _get_change_password_form($user) {
@@ -234,7 +231,7 @@ class Users_Controller extends Controller {
     $locales = array_merge(array("" => t("« none »")), $locales);
     $selected_locale = ($user && $user->locale) ? $user->locale : "";
     $form->dropdown("locale")
-      ->label(t("Language Preference"))
+      ->label(t("Language preference"))
       ->options($locales)
       ->selected($selected_locale);
   }
diff --git a/modules/watermark/controllers/admin_watermarks.php b/modules/watermark/controllers/admin_watermarks.php
index 8b217b4a..0652b13c 100644
--- a/modules/watermark/controllers/admin_watermarks.php
+++ b/modules/watermark/controllers/admin_watermarks.php
@@ -35,7 +35,7 @@ class Admin_Watermarks_Controller extends Admin_Controller {
   }
 
   public function form_edit() {
-    print json_encode(array("form" => (string) watermark::get_edit_form()));
+    print watermark::get_edit_form();
   }
 
   public function edit() {
@@ -49,16 +49,16 @@ class Admin_Watermarks_Controller extends Admin_Controller {
 
       log::success("watermark", t("Watermark changed"));
       message::success(t("Watermark changed"));
-      print json_encode(
+      json::reply(
         array("result" => "success",
               "location" => url::site("admin/watermarks")));
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "html" => (string)$form));
     }
   }
 
   public function form_delete() {
-    print json_encode(array("form" => (string) watermark::get_delete_form()));
+    print watermark::get_delete_form();
   }
 
   public function delete() {
@@ -79,16 +79,14 @@ class Admin_Watermarks_Controller extends Admin_Controller {
         log::success("watermark", t("Watermark deleted"));
         message::success(t("Watermark deleted"));
       }
-      print json_encode(
-        array("result" => "success",
-              "location" => url::site("admin/watermarks")));
+      json::reply(array("result" => "success", "location" => url::site("admin/watermarks")));
     } else {
-      print json_encode(array("result" => "error", "form" => (string) $form));
+      json::reply(array("result" => "error", "html" => (string)$form));
     }
   }
 
   public function form_add() {
-    print json_encode(array("form" => (string) watermark::get_add_form()));
+    print watermark::get_add_form();
   }
 
   public function add() {
@@ -120,11 +118,12 @@ class Admin_Watermarks_Controller extends Admin_Controller {
 
       message::success(t("Watermark saved"));
       log::success("watermark", t("Watermark saved"));
-      print json_encode(
-        array("result" => "success",
-              "location" => url::site("admin/watermarks")));
+      json::reply(array("result" => "success", "location" => url::site("admin/watermarks")));
     } else {
-      print json_encode(array("result" => "error", "form" => rawurlencode((string) $form)));
+      // rawurlencode the results because the JS code that uploads the file buffers it in an
+      // iframe which entitizes the HTML and makes it difficult for the JS to process.  If we url
+      // encode it now, it passes through cleanly.  See ticket #797.
+      json::reply(array("result" => "error", "html" => rawurlencode((string)$form)));
     }
   }