[epiphany] Don't use DOM bindings to delete a web application from about:applications

[Carlos Garcia Campos <carlosgc src gnome org>]

commit f256d7fc2dac4f1a3abbcc594be51f62b6f13496
Author: Carlos Garcia Campos <cgarcia igalia com>
Date:   Fri Sep 21 18:42:12 2012 +0200

    Don't use DOM bindings to delete a web application from about:applications
    
    Use a different form for every web application with a hidden value
    containing the application id. Then use the policy client to ignore any form
    submission from about:applications and delete the application instead,
    reloading the about:applications page. This solution will work for
    WebKit2 too.

 embed/ephy-about-handler.c |   15 +++++--
 embed/ephy-web-view.c      |   89 +-------------------------------------------
 src/ephy-window.c          |   32 ++++++++++++++++
 3 files changed, 44 insertions(+), 92 deletions(-)
---
diff --git a/embed/ephy-about-handler.c b/embed/ephy-about-handler.c
index 9f4caf6..e9328a1 100644
--- a/embed/ephy-about-handler.c
+++ b/embed/ephy-about-handler.c
@@ -210,7 +210,7 @@ ephy_about_handler_handle_applications (GString *data_str)
                           _("Applications"),
                           _("List of installed web applications"));
 
-  g_string_append (data_str, "<form><table>");
+  g_string_append (data_str, "<table>");
 
   applications = ephy_web_application_get_application_list ();
   for (p = applications; p; p = p->next) {
@@ -220,16 +220,21 @@ ephy_about_handler_handle_applications (GString *data_str)
 
     if (g_file_get_contents (app->icon_url, &img_data, &data_length, NULL))
       img_data_base64 = g_base64_encode ((guchar*)img_data, data_length);
-    g_string_append_printf (data_str, "<tbody><tr><td class=\"icon\"><img width=64 height=64 src=\"data:image/png;base64,%s\">" \
-                            " </img></td><td class=\"data\"><div class=\"appname\">%s</div><div class=\"appurl\">%s</div></td><td class=\"input\"><input type=\"submit\" value=\"Delete\" id=\"%s\"></td><td class=\"date\">%s <br /> %s</td></tr>",
-                            img_data_base64, app->name, app->url, app->name,
+    g_string_append_printf (data_str,
+                            "<form>" \
+                            "<tbody><tr>" \
+                            "<td class=\"icon\"><img width=64 height=64 src=\"data:image/png;base64,%s\"></img></td>" \
+                            "<td class=\"data\"><div class=\"appname\">%s</div><div class=\"appurl\">%s</div></td>" \
+                            "<td class=\"input\"><input type=\"hidden\" name=\"app_id\" value=\"%s\"><input type=\"submit\" value=\"Delete\" id=\"%s\">" \
+                            "</td><td class=\"date\">%s <br /> %s</td></tr></tbody></form>",
+                            img_data_base64, app->name, app->url, app->name, app->name,
                             /* Note for translators: this refers to the installation date. */
                             _("Installed on:"), app->install_date);
     g_free (img_data_base64);
     g_free (img_data);
   }
 
-  g_string_append (data_str, "</form></table></body>");
+  g_string_append (data_str, "</table></body>");
 
   ephy_web_application_free_application_list (applications);
 }
diff --git a/embed/ephy-web-view.c b/embed/ephy-web-view.c
index 9b096ae..c70d9d4 100644
--- a/embed/ephy-web-view.c
+++ b/embed/ephy-web-view.c
@@ -2013,26 +2013,6 @@ geolocation_policy_decision_requested_cb (WebKitWebView *web_view,
   return TRUE;
 }
 
-#ifdef HAVE_WEBKIT2
-/* TODO: DOM Bindings */
-#else
-static gboolean
-delete_web_app_cb (WebKitDOMHTMLElement *button,
-                   WebKitDOMEvent *dom_event,
-                   EphyWebView *web_view)
-{
-  char *id = NULL;
-
-  id = webkit_dom_html_element_get_id (button);
-  if (id)
-    ephy_web_application_delete (id);
-
-  g_free (id);
-
-  return FALSE;
-}
-#endif
-
 static void
 get_host_for_url_cb (gpointer service,
                      gboolean success,
@@ -2220,9 +2200,7 @@ load_changed_cb (WebKitWebView *web_view,
 
     break;
   }
-  case WEBKIT_LOAD_FINISHED: {
-    SoupURI *uri;
-
+  case WEBKIT_LOAD_FINISHED:
     g_free (priv->status_message);
     priv->status_message = NULL;
     g_object_notify (object, "status-message");
@@ -2241,37 +2219,6 @@ load_changed_cb (WebKitWebView *web_view,
     _ephy_web_view_hook_into_links (view);
 #endif
 
-    /* FIXME: It sucks to do this here, but it's not really possible
-     * to hook the DOM actions nicely in the about: generator. */
-    uri = soup_uri_new (webkit_web_view_get_uri (web_view));
-    if (uri &&
-        !g_strcmp0 (uri->scheme, "ephy-about") &&
-        !g_strcmp0 (uri->path, "applications")) {
-#if 0
-      /* TODO: DOM bindings */
-      WebKitDOMDocument *document;
-      WebKitDOMNodeList *buttons;
-      gulong buttons_n;
-      int i;
-
-      document = webkit_web_view_get_dom_document (web_view);
-      buttons = webkit_dom_document_get_elements_by_tag_name (document, "input");
-      buttons_n = webkit_dom_node_list_get_length (buttons);
-
-      for (i = 0; i < buttons_n; i++) {
-        WebKitDOMNode *button;
-
-        button = webkit_dom_node_list_item (buttons, i);
-        webkit_dom_event_target_add_event_listener (WEBKIT_DOM_EVENT_TARGET (button), "click",
-                                                    G_CALLBACK (delete_web_app_cb), false,
-                                                    NULL);
-      }
-#endif
-    }
-
-    if (uri)
-      soup_uri_free (uri);
-
     /* Ensure we load the icon for this web view, if available. */
     _ephy_web_view_update_icon (view);
 
@@ -2280,7 +2227,6 @@ load_changed_cb (WebKitWebView *web_view,
 
     break;
   }
-  }
 
   g_object_thaw_notify (object);
 }
@@ -2378,9 +2324,7 @@ load_status_cb (WebKitWebView *web_view,
 
     break;
   }
-  case WEBKIT_LOAD_FINISHED: {
-    SoupURI *uri;
-
+  case WEBKIT_LOAD_FINISHED:
     g_free (priv->status_message);
     priv->status_message = NULL;
     g_object_notify (object, "status-message");
@@ -2396,34 +2340,6 @@ load_status_cb (WebKitWebView *web_view,
 
     _ephy_web_view_hook_into_links (view);
 
-    /* FIXME: It sucks to do this here, but it's not really possible
-     * to hook the DOM actions nicely in the about: generator. */
-    uri = soup_uri_new (webkit_web_view_get_uri (web_view));
-    if (uri &&
-        !g_strcmp0 (uri->scheme, "ephy-about") &&
-        !g_strcmp0 (uri->path, "applications")) {
-      WebKitDOMDocument *document;
-      WebKitDOMNodeList *buttons;
-      gulong buttons_n;
-      int i;
-
-      document = webkit_web_view_get_dom_document (web_view);
-      buttons = webkit_dom_document_get_elements_by_tag_name (document, "input");
-      buttons_n = webkit_dom_node_list_get_length (buttons);
-
-      for (i = 0; i < buttons_n; i++) {
-        WebKitDOMNode *button;
-
-        button = webkit_dom_node_list_item (buttons, i);
-        webkit_dom_event_target_add_event_listener (WEBKIT_DOM_EVENT_TARGET (button), "click",
-                                                    G_CALLBACK (delete_web_app_cb), false,
-                                                    NULL);
-      }
-    }
-
-    if (uri)
-      soup_uri_free (uri);
-
     /* Reset visit type. */
     priv->visit_type = EPHY_PAGE_VISIT_NONE;
 
@@ -2435,7 +2351,6 @@ load_status_cb (WebKitWebView *web_view,
 
     ephy_web_view_thaw_history (view);
     break;
-  }
   case WEBKIT_LOAD_FAILED:
     priv->load_failed = TRUE;
     ephy_web_view_set_link_message (view, NULL);
diff --git a/src/ephy-window.c b/src/ephy-window.c
index 3fcd3ee..5b309a0 100644
--- a/src/ephy-window.c
+++ b/src/ephy-window.c
@@ -54,6 +54,7 @@
 #include "ephy-shell.h"
 #include "ephy-toolbar.h"
 #include "ephy-type-builtins.h"
+#include "ephy-web-app-utils.h"
 #include "ephy-web-view.h"
 #include "ephy-zoom-action.h"
 #include "ephy-zoom.h"
@@ -2466,6 +2467,28 @@ create_web_view_cb (WebKitWebView *web_view,
 	return new_web_view;
 }
 
+static void
+delete_web_app (const char *request_uri)
+{
+	SoupURI *uri = soup_uri_new (request_uri);
+
+	if (uri->query)
+	{
+		GHashTable *form;
+		const char *app_id;
+
+		form = soup_form_decode (uri->query);
+		app_id = g_hash_table_lookup (form, "app_id");
+		if (app_id)
+		{
+			ephy_web_application_delete (app_id);
+		}
+		g_hash_table_destroy (form);
+	}
+
+	soup_uri_free (uri);
+}
+
 #ifdef HAVE_WEBKIT2
 static gboolean
 decide_policy_cb (WebKitWebView *web_view,
@@ -2737,6 +2760,15 @@ policy_decision_required_cb (WebKitWebView *web_view,
 		return TRUE;
 	}
 
+	if (reason == WEBKIT_WEB_NAVIGATION_REASON_FORM_SUBMITTED && uri &&
+	    g_str_has_prefix (uri, "ephy-about:applications"))
+	{
+		delete_web_app (uri);
+		webkit_web_policy_decision_use (decision);
+
+		return TRUE;
+	}
+
 	return FALSE;
 }
 #endif