[epiphany/pgriffis/web-extension/downloads: 1/2] WebExtensions: Move downloads signal handling to downloads.c

[Patrick Griffis <pgriffis src gnome org>]

commit 44eeb202cbb9ceb26507201934ad8178fe0041ca
Author: Patrick Griffis <pgriffis igalia com>
Date:   Tue Jun 21 18:26:49 2022 -0500

    WebExtensions: Move downloads signal handling to downloads.c
    
    This also properly disconnects the signals on dispose.

 src/webextension/api/downloads.c              | 71 ++++++++++++++++++++++++++-
 src/webextension/api/downloads.h              |  6 ++-
 src/webextension/ephy-web-extension-manager.c | 66 +++++--------------------
 src/webextension/ephy-web-extension-manager.h |  6 +++
 4 files changed, 90 insertions(+), 59 deletions(-)
---
diff --git a/src/webextension/api/downloads.c b/src/webextension/api/downloads.c
index 60ad98635..d0cc791c0 100644
--- a/src/webextension/api/downloads.c
+++ b/src/webextension/api/downloads.c
@@ -21,6 +21,7 @@
 #include "config.h"
 
 #include "ephy-file-helpers.h"
+#include "ephy-web-extension-manager.h"
 
 #include "api-utils.h"
 #include "downloads.h"
@@ -603,8 +604,8 @@ add_download_to_json (JsonBuilder  *builder,
   json_builder_end_object (builder);
 }
 
-char *
-ephy_web_extension_api_downloads_download_to_json (EphyDownload *download)
+static char *
+download_to_json (EphyDownload *download)
 {
   g_autoptr (JsonBuilder) builder = json_builder_new ();
   g_autoptr (JsonNode) root = NULL;
@@ -807,3 +808,69 @@ ephy_web_extension_api_downloads_handler (EphyWebExtension *self,
 
   g_task_return_new_error (task, WEB_EXTENSION_ERROR, WEB_EXTENSION_ERROR_NOT_IMPLEMENTED, "downloads.%s(): 
Not Implemented", name);
 }
+
+typedef struct {
+  const char *event_name;
+  char *json;
+} DownloadEventData;
+
+static void
+foreach_extension_cb (EphyWebExtension *web_extension,
+                      gpointer          user_data)
+{
+  EphyWebExtensionManager *manager = ephy_web_extension_manager_get_default ();
+  DownloadEventData *data = user_data;
+
+  if (!ephy_web_extension_has_permission (web_extension, "downloads"))
+    return;
+
+  ephy_web_extension_manager_emit_in_extension_views (manager, web_extension, data->event_name, data->json);
+}
+
+static void
+download_added_cb (EphyDownloadsManager    *downloads_manager,
+                   EphyDownload            *download,
+                   EphyWebExtensionManager *manager)
+{
+  g_autofree char *json = download_to_json (download);
+  DownloadEventData data = { "downloads.onCreated", json };
+  ephy_web_extension_manager_foreach_extension (manager, foreach_extension_cb, &data);
+}
+
+static void
+download_completed_cb (EphyDownloadsManager    *downloads_manager,
+                       EphyDownload            *download,
+                       EphyWebExtensionManager *manager)
+{
+  g_autofree char *json = download_to_json (download);
+  DownloadEventData data = { "downloads.onChanged", json };
+  ephy_web_extension_manager_foreach_extension (manager, foreach_extension_cb, &data);
+}
+
+static void
+download_removed_cb (EphyDownloadsManager    *downloads_manager,
+                     EphyDownload            *download,
+                     EphyWebExtensionManager *manager)
+{
+  g_autofree char *json = g_strdup_printf ("%" G_GUINT64_FORMAT, ephy_download_get_uid (download));
+  DownloadEventData data = { "downloads.onErased", json };
+  ephy_web_extension_manager_foreach_extension (manager, foreach_extension_cb, &data);
+}
+
+void
+ephy_web_extension_api_downloads_init (EphyWebExtensionManager *manager)
+{
+  EphyDownloadsManager *downloads_manager = get_downloads_manager ();
+
+  g_signal_connect (downloads_manager, "download-added", G_CALLBACK (download_added_cb), manager);
+  g_signal_connect (downloads_manager, "download-completed", G_CALLBACK (download_completed_cb), manager);
+  g_signal_connect (downloads_manager, "download-removed", G_CALLBACK (download_removed_cb), manager);
+}
+
+void
+ephy_web_extension_api_downloads_dispose (EphyWebExtensionManager *manager)
+{
+  EphyDownloadsManager *downloads_manager = get_downloads_manager ();
+
+  g_signal_handlers_disconnect_by_data (downloads_manager, manager);
+}
diff --git a/src/webextension/api/downloads.h b/src/webextension/api/downloads.h
index 85a0e6193..f91ad6e2e 100644
--- a/src/webextension/api/downloads.h
+++ b/src/webextension/api/downloads.h
@@ -28,12 +28,14 @@
 
 G_BEGIN_DECLS
 
+void ephy_web_extension_api_downloads_init (EphyWebExtensionManager *manager);
+
+void ephy_web_extension_api_downloads_dispose (EphyWebExtensionManager *manager);
+
 void ephy_web_extension_api_downloads_handler (EphyWebExtension *self,
                                                char             *name,
                                                JSCValue         *value,
                                                WebKitWebView    *web_view,
                                                GTask            *task);
 
-char  *ephy_web_extension_api_downloads_download_to_json (EphyDownload *download);
-
 G_END_DECLS
diff --git a/src/webextension/ephy-web-extension-manager.c b/src/webextension/ephy-web-extension-manager.c
index 34973f1bf..75fb718bd 100644
--- a/src/webextension/ephy-web-extension-manager.c
+++ b/src/webextension/ephy-web-extension-manager.c
@@ -210,57 +210,6 @@ destroy_widget_list (GSList *widget_list)
   g_slist_free_full (widget_list, (GDestroyNotify)gtk_widget_destroy);
 }
 
-static void
-download_added_cb (EphyDownloadsManager    *downloads_manager,
-                   EphyDownload            *download,
-                   EphyWebExtensionManager *manager)
-{
-  for (GList *l = manager->web_extensions; l; l = g_list_next (l)) {
-    EphyWebExtension *extension = l->data;
-    g_autofree char *json = NULL;
-
-    if (!ephy_web_extension_has_permission (extension, "downloads"))
-      continue;
-
-    json = ephy_web_extension_api_downloads_download_to_json (download);
-    ephy_web_extension_manager_emit_in_extension_views (manager, extension, "downloads.onCreated", json);
-  }
-}
-
-static void
-download_completed_cb (EphyDownloadsManager    *downloads_manager,
-                       EphyDownload            *download,
-                       EphyWebExtensionManager *manager)
-{
-  for (GList *l = manager->web_extensions; l; l = g_list_next (l)) {
-    EphyWebExtension *extension = l->data;
-    g_autofree char *json = NULL;
-
-    if (!ephy_web_extension_has_permission (extension, "downloads"))
-      continue;
-
-    json = ephy_web_extension_api_downloads_download_to_json (download);
-    ephy_web_extension_manager_emit_in_extension_views (manager, extension, "downloads.onChanged", json);
-  }
-}
-
-static void
-download_removed_cb (EphyDownloadsManager    *downloads_manager,
-                     EphyDownload            *download,
-                     EphyWebExtensionManager *manager)
-{
-  for (GList *l = manager->web_extensions; l; l = g_list_next (l)) {
-    EphyWebExtension *extension = l->data;
-    g_autofree char *json = NULL;
-
-    if (!ephy_web_extension_has_permission (extension, "downloads"))
-      continue;
-
-    json = g_strdup_printf ("%" G_GUINT64_FORMAT, ephy_download_get_uid (download));
-    ephy_web_extension_manager_emit_in_extension_views (manager, extension, "downloads.onErased", json);
-  }
-}
-
 static void
 ephy_web_extension_manager_constructed (GObject *object)
 {
@@ -282,6 +231,8 @@ ephy_web_extension_manager_dispose (GObject *object)
 {
   EphyWebExtensionManager *self = EPHY_WEB_EXTENSION_MANAGER (object);
 
+  ephy_web_extension_api_downloads_dispose (self);
+
   g_clear_pointer (&self->background_web_views, g_hash_table_destroy);
   g_clear_pointer (&self->popup_web_views, g_hash_table_destroy);
   g_clear_pointer (&self->page_action_map, g_hash_table_destroy);
@@ -308,7 +259,6 @@ ephy_web_extension_manager_class_init (EphyWebExtensionManagerClass *klass)
 static void
 ephy_web_extension_manager_init (EphyWebExtensionManager *self)
 {
-  EphyDownloadsManager *downloads_manager = ephy_embed_shell_get_downloads_manager 
(ephy_embed_shell_get_default ());
   WebKitWebContext *web_context;
 
   web_context = ephy_embed_shell_get_web_context (ephy_embed_shell_get_default ());
@@ -316,9 +266,7 @@ ephy_web_extension_manager_init (EphyWebExtensionManager *self)
   webkit_security_manager_register_uri_scheme_as_secure (webkit_web_context_get_security_manager 
(web_context),
                                                          "ephy-webextension");
 
-  g_signal_connect (downloads_manager, "download-added", G_CALLBACK (download_added_cb), self);
-  g_signal_connect (downloads_manager, "download-completed", G_CALLBACK (download_completed_cb), self);
-  g_signal_connect (downloads_manager, "download-removed", G_CALLBACK (download_removed_cb), self);
+  ephy_web_extension_api_downloads_init (self);
 }
 
 EphyWebExtensionManager *
@@ -1291,6 +1239,14 @@ application_window_added_timeout_cb (gpointer user_data)
   return G_SOURCE_REMOVE;
 }
 
+void
+ephy_web_extension_manager_foreach_extension (EphyWebExtensionManager     *self,
+                                              EphyWebExtensionForeachFunc  func,
+                                              gpointer                     user_data)
+{
+  g_list_foreach (self->web_extensions, (GFunc)func, user_data);
+}
+
 static void
 application_window_added_cb (EphyShell        *shell,
                              EphyWindow       *window,
diff --git a/src/webextension/ephy-web-extension-manager.h b/src/webextension/ephy-web-extension-manager.h
index decb1016c..ecf2b59fa 100644
--- a/src/webextension/ephy-web-extension-manager.h
+++ b/src/webextension/ephy-web-extension-manager.h
@@ -31,6 +31,8 @@ G_BEGIN_DECLS
 
 G_DECLARE_FINAL_TYPE (EphyWebExtensionManager, ephy_web_extension_manager, EPHY, WEB_EXTENSION_MANAGER, 
GObject)
 
+typedef void (*EphyWebExtensionForeachFunc) (EphyWebExtension *extension, gpointer user_data);
+
 EphyWebExtensionManager *ephy_web_extension_manager_get_default                     (void);
 
 GList                  *ephy_web_extension_manager_get_web_extensions               (EphyWebExtensionManager 
*self);
@@ -102,4 +104,8 @@ void                     ephy_web_extension_manager_emit_in_tab_with_reply
 
 GtkWidget                *ephy_web_extensions_manager_create_web_extensions_webview (EphyWebExtension        
*web_extension);
 
+void                      ephy_web_extension_manager_foreach_extension              (EphyWebExtensionManager 
    *self,
+                                                                                     
EphyWebExtensionForeachFunc  func,
+                                                                                     gpointer                
     user_data);
+
 G_END_DECLS