[epiphany/carlosgc/pson] Enable Process Swap On Navigation

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 7d34ecd5a0e18b92f878de7958e3d7ae6a884ae1
Author: Carlos Garcia Campos <cgarcia igalia com>
Date:   Fri Oct 4 16:26:02 2019 +0200

    Enable Process Swap On Navigation
    
    Bump the dependency opf WebKitGTK to 2.27.1 and use the new API to
    enable PSON. We no longer need to keep the web process extension as a
    member of the web view, since it's only required by EphyShell that now
    keeps a hash table with the proxy of every known page id.

 embed/ephy-embed-shell.c | 71 ++++++++++++++++++++++++------------------------
 embed/ephy-embed-shell.h |  1 +
 embed/ephy-web-view.c    | 34 -----------------------
 embed/ephy-web-view.h    |  3 --
 meson.build              |  2 +-
 5 files changed, 38 insertions(+), 73 deletions(-)
---
diff --git a/embed/ephy-embed-shell.c b/embed/ephy-embed-shell.c
index 811796553..f9dca716e 100644
--- a/embed/ephy-embed-shell.c
+++ b/embed/ephy-embed-shell.c
@@ -43,7 +43,6 @@
 #include "ephy-uri-helpers.h"
 #include "ephy-view-source-handler.h"
 #include "ephy-web-app-utils.h"
-#include "ephy-web-process-extension-proxy.h"
 
 #include <glib/gi18n.h>
 #include <gtk/gtk.h>
@@ -69,6 +68,7 @@ typedef struct {
   char *guid;
   GDBusServer *dbus_server;
   GList *web_process_extensions;
+  GHashTable *web_process_extension_page_map;
   EphyFiltersManager *filters_manager;
   EphySearchEngineManager *search_engine_manager;
   GCancellable *cancellable;
@@ -77,7 +77,6 @@ typedef struct {
 enum {
   RESTORED_WINDOW,
   WEB_VIEW_CREATED,
-  PAGE_CREATED,
   ALLOW_TLS_CERTIFICATE,
   ALLOW_UNSAFE_BROWSING,
   PASSWORD_FORM_FOCUSED,
@@ -141,8 +140,15 @@ ephy_embed_shell_get_extension_proxy_for_page_id (EphyEmbedShell *self,
                                                   guint64         page_id,
                                                   const char     *origin)
 {
-  EphyWebView *view = ephy_embed_shell_get_view_for_page_id (self, page_id, origin);
-  return view ? ephy_web_view_get_web_process_extension_proxy (view) : NULL;
+  EphyEmbedShellPrivate *priv = ephy_embed_shell_get_instance_private (self);
+
+  if (!priv->web_process_extension_page_map)
+    return NULL;
+
+  if (!ephy_embed_shell_get_view_for_page_id (self, page_id, origin))
+    return NULL;
+
+  return g_hash_table_lookup (priv->web_process_extension_page_map, GSIZE_TO_POINTER (page_id));
 }
 
 static GList *
@@ -217,6 +223,7 @@ ephy_embed_shell_dispose (GObject *object)
   g_clear_object (&priv->dbus_server);
   g_clear_object (&priv->filters_manager);
   g_clear_object (&priv->search_engine_manager);
+  g_clear_pointer (&priv->web_process_extension_page_map, g_hash_table_destroy);
 
   G_OBJECT_CLASS (ephy_embed_shell_parent_class)->dispose (object);
 }
@@ -982,8 +989,18 @@ web_process_extension_page_created (EphyWebProcessExtensionProxy *extension,
                                     guint64                       page_id,
                                     EphyEmbedShell               *shell)
 {
+  EphyEmbedShellPrivate *priv = ephy_embed_shell_get_instance_private (shell);
+
   g_object_set_data (G_OBJECT (extension), "initialized", GINT_TO_POINTER (TRUE));
-  g_signal_emit (shell, signals[PAGE_CREATED], 0, page_id, extension);
+  g_hash_table_insert (priv->web_process_extension_page_map, GSIZE_TO_POINTER (page_id), extension);
+}
+
+static gboolean
+find_extension (gpointer key,
+                gpointer value,
+                gpointer user_data)
+{
+  return value == user_data;
 }
 
 static void
@@ -993,6 +1010,7 @@ web_process_extension_connection_closed (EphyWebProcessExtensionProxy *extension
   EphyEmbedShellPrivate *priv = ephy_embed_shell_get_instance_private (shell);
 
   priv->web_process_extensions = g_list_remove (priv->web_process_extensions, extension);
+  g_hash_table_foreach_remove (priv->web_process_extension_page_map, find_extension, extension);
   g_object_unref (extension);
 }
 
@@ -1070,22 +1088,21 @@ ephy_embed_shell_create_web_context (EphyEmbedShell *shell)
   EphyEmbedShellPrivate *priv = ephy_embed_shell_get_instance_private (shell);
   g_autoptr (WebKitWebsiteDataManager) manager = NULL;
 
-  if (priv->mode == EPHY_EMBED_SHELL_MODE_INCOGNITO) {
-    priv->web_context = webkit_web_context_new_ephemeral ();
-    return;
-  }
-
-  if (priv->mode == EPHY_EMBED_SHELL_MODE_AUTOMATION) {
-    priv->web_context = webkit_web_context_new_ephemeral ();
-    webkit_web_context_set_automation_allowed (priv->web_context, TRUE);
-    return;
+  if (priv->mode == EPHY_EMBED_SHELL_MODE_INCOGNITO || priv->mode == EPHY_EMBED_SHELL_MODE_AUTOMATION) {
+    manager = webkit_website_data_manager_new_ephemeral ();
+  } else {
+    manager = webkit_website_data_manager_new ("base-data-directory", ephy_profile_dir (),
+                                               "base-cache-directory", ephy_cache_dir (),
+                                               NULL);
   }
 
-  manager = webkit_website_data_manager_new ("base-data-directory", ephy_profile_dir (),
-                                             "base-cache-directory", ephy_cache_dir (),
-                                             NULL);
+  priv->web_context = g_object_new (WEBKIT_TYPE_WEB_CONTEXT,
+                                    "website-data-manager", manager,
+                                    "process-swap-on-cross-site-navigation-enabled", TRUE,
+                                    NULL);
 
-  priv->web_context = webkit_web_context_new_with_website_data_manager (manager);
+  if (priv->mode == EPHY_EMBED_SHELL_MODE_AUTOMATION)
+    webkit_web_context_set_automation_allowed (priv->web_context, TRUE);
 }
 
 static void
@@ -1209,6 +1226,7 @@ ephy_embed_shell_startup (GApplication *application)
   webkit_web_context_add_path_to_sandbox (priv->web_context, BUILD_ROOT, TRUE);
 #endif
 
+  priv->web_process_extension_page_map = g_hash_table_new (g_direct_hash, g_direct_equal);
   g_signal_connect_object (priv->web_context, "initialize-web-extensions",
                            G_CALLBACK (initialize_web_process_extensions),
                            shell, 0);
@@ -1452,23 +1470,6 @@ ephy_embed_shell_class_init (EphyEmbedShellClass *klass)
                   G_TYPE_NONE, 1,
                   EPHY_TYPE_WEB_VIEW);
 
-  /**
-   * EphyEmbedShell::page-created:
-   * @shell: the #EphyEmbedShell
-   * @page_id: the identifier of the web page created
-   * @web_process_extension: the #EphyWebProcessExtensionProxy
-   *
-   * Emitted when a web page is created in the web process.
-   */
-  signals[PAGE_CREATED] =
-    g_signal_new ("page-created",
-                  EPHY_TYPE_EMBED_SHELL,
-                  G_SIGNAL_RUN_FIRST,
-                  0, NULL, NULL, NULL,
-                  G_TYPE_NONE, 2,
-                  G_TYPE_UINT64,
-                  EPHY_TYPE_WEB_PROCESS_EXTENSION_PROXY);
-
   /**
    * EphyEmbedShell::allow-tls-certificate:
    * @shell: the #EphyEmbedShell
diff --git a/embed/ephy-embed-shell.h b/embed/ephy-embed-shell.h
index 6abfddbc0..0d46b4264 100644
--- a/embed/ephy-embed-shell.h
+++ b/embed/ephy-embed-shell.h
@@ -31,6 +31,7 @@
 #include "ephy-password-manager.h"
 #include "ephy-permissions-manager.h"
 #include "ephy-search-engine-manager.h"
+#include "ephy-web-process-extension-proxy.h"
 
 G_BEGIN_DECLS
 
diff --git a/embed/ephy-web-view.c b/embed/ephy-web-view.c
index aeedd254c..e2c2f2a54 100644
--- a/embed/ephy-web-view.c
+++ b/embed/ephy-web-view.c
@@ -133,9 +133,6 @@ struct _EphyWebView {
   char *tls_error_failing_uri;
 
   EphyWebViewErrorPage error_page;
-
-  /* Web Process Extension */
-  EphyWebProcessExtensionProxy *web_process_extension;
 };
 
 typedef struct {
@@ -905,32 +902,11 @@ allow_unsafe_browsing_cb (EphyEmbedShell *shell,
   ephy_web_view_load_url (view, ephy_web_view_get_address (view));
 }
 
-static void
-page_created_cb (EphyEmbedShell               *shell,
-                 guint64                       page_id,
-                 EphyWebProcessExtensionProxy *web_process_extension,
-                 EphyWebView                  *view)
-{
-  if (webkit_web_view_get_page_id (WEBKIT_WEB_VIEW (view)) != page_id)
-    return;
-
-  if (view->web_process_extension)
-    g_object_remove_weak_pointer (G_OBJECT (view->web_process_extension), (gpointer 
*)&view->web_process_extension);
-
-  view->web_process_extension = web_process_extension;
-  g_object_add_weak_pointer (G_OBJECT (view->web_process_extension), (gpointer 
*)&view->web_process_extension);
-}
-
 static void
 ephy_web_view_dispose (GObject *object)
 {
   EphyWebView *view = EPHY_WEB_VIEW (object);
 
-  if (view->web_process_extension) {
-    g_object_remove_weak_pointer (G_OBJECT (view->web_process_extension), (gpointer 
*)&view->web_process_extension);
-    view->web_process_extension = NULL;
-  }
-
   untrack_info_bar (&view->geolocation_info_bar);
   untrack_info_bar (&view->notification_info_bar);
   untrack_info_bar (&view->microphone_info_bar);
@@ -3000,10 +2976,6 @@ ephy_web_view_init (EphyWebView *web_view)
                     G_CALLBACK (authenticate_cb),
                     NULL);
 
-  g_signal_connect_object (shell, "page-created",
-                           G_CALLBACK (page_created_cb),
-                           web_view, 0);
-
   g_signal_connect_object (shell, "password-form-focused",
                            G_CALLBACK (password_form_focused_cb),
                            web_view, 0);
@@ -3978,12 +3950,6 @@ ephy_web_view_get_reader_mode_state (EphyWebView *view)
   return view->reader_active;
 }
 
-EphyWebProcessExtensionProxy *
-ephy_web_view_get_web_process_extension_proxy (EphyWebView *view)
-{
-  return view->web_process_extension;
-}
-
 gboolean
 ephy_web_view_is_in_auth_dialog (EphyWebView *view)
 {
diff --git a/embed/ephy-web-view.h b/embed/ephy-web-view.h
index 751166547..5cacb9099 100644
--- a/embed/ephy-web-view.h
+++ b/embed/ephy-web-view.h
@@ -26,7 +26,6 @@
 #include "ephy-embed-shell.h"
 #include "ephy-history-types.h"
 #include "ephy-security-levels.h"
-#include "ephy-web-process-extension-proxy.h"
 
 G_BEGIN_DECLS
 
@@ -165,8 +164,6 @@ gboolean                   ephy_web_view_get_reader_mode_state    (EphyWebView
 
 gboolean                   ephy_web_view_is_in_auth_dialog        (EphyWebView               *view);
 
-EphyWebProcessExtensionProxy *ephy_web_view_get_web_process_extension_proxy  (EphyWebView               
*view);
-
 void                       ephy_web_view_show_auth_form_save_request (EphyWebView                    
*web_view,
                                                                       const char                     *origin,
                                                                       const char                     
*username,
diff --git a/meson.build b/meson.build
index 118176fc3..2f83c11b7 100644
--- a/meson.build
+++ b/meson.build
@@ -76,7 +76,7 @@ config_h = declare_dependency(
 glib_requirement = '>= 2.61.2'
 gtk_requirement = '>= 3.24.0'
 nettle_requirement = '>= 3.4'
-webkitgtk_requirement = '>= 2.26.0'
+webkitgtk_requirement = '>= 2.27.1'
 
 cairo_dep = dependency('cairo', version: '>= 1.2')
 gcr_dep = dependency('gcr-3', version: '>= 3.5.5')