diff options
Diffstat (limited to 'embed/web-extension/ephy-web-extension.c')
| -rw-r--r-- | embed/web-extension/ephy-web-extension.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/embed/web-extension/ephy-web-extension.c b/embed/web-extension/ephy-web-extension.c new file mode 100644 index 000000000..1650026a3 --- /dev/null +++ b/embed/web-extension/ephy-web-extension.c @@ -0,0 +1,169 @@ +/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* + * Copyright © 2012 Igalia S.L. + * + * 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, 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. + */ + +#include "config.h" +#include "ephy-web-extension.h" + +#include <gio/gio.h> +#include <webkit2/webkit-web-extension.h> + +static const char introspection_xml[] = + "<node>" + " <interface name='org.gnome.Epiphany.WebExtension'>" + " <method name='HasModifiedForms'>" + " <arg type='t' name='page_id' direction='in'/>" + " <arg type='b' name='has_modified_forms' direction='out'/>" + " </method>" + " </interface>" + "</node>"; + +#define MIN_INPUT_LENGTH 50 + +static gboolean +ephy_web_extension_page_has_modified_forms (WebKitWebPage *web_page) +{ + WebKitDOMHTMLCollection *forms = NULL; + WebKitDOMDocument *document = NULL; + gulong forms_n; + int i; + + document = webkit_web_page_get_dom_document (web_page); + forms = webkit_dom_document_get_forms (document); + forms_n = webkit_dom_html_collection_get_length (forms); + + for (i = 0; i < forms_n; i++) { + WebKitDOMHTMLCollection *elements; + WebKitDOMNode *form_element = webkit_dom_html_collection_item (forms, i); + gulong elements_n; + int j; + gboolean modified_input_element = FALSE; + + elements = webkit_dom_html_form_element_get_elements (WEBKIT_DOM_HTML_FORM_ELEMENT (form_element)); + elements_n = webkit_dom_html_collection_get_length (elements); + + for (j = 0; j < elements_n; j++) { + WebKitDOMNode *element; + + element = webkit_dom_html_collection_item (elements, j); + + if (WEBKIT_DOM_IS_HTML_TEXT_AREA_ELEMENT (element)) + if (webkit_dom_html_text_area_element_is_edited (WEBKIT_DOM_HTML_TEXT_AREA_ELEMENT (element))) + return TRUE; + + if (WEBKIT_DOM_IS_HTML_INPUT_ELEMENT (element)) + if (webkit_dom_html_input_element_is_edited (WEBKIT_DOM_HTML_INPUT_ELEMENT (element))) { + glong length; + char *text; + + /* A small heuristic here. If there's only one input element + * modified and it does not have a lot of text the user is + * likely not very interested in saving this work, so do + * nothing (eg, google search input). */ + if (modified_input_element) + return TRUE; + + modified_input_element = TRUE; + + text = webkit_dom_html_input_element_get_value (WEBKIT_DOM_HTML_INPUT_ELEMENT (element)); + length = g_utf8_strlen (text, -1); + g_free (text); + + if (length > MIN_INPUT_LENGTH) + return TRUE; + } + } + } + + return FALSE; +} + +static void +handle_method_call (GDBusConnection *connection, + const char *sender, + const char *object_path, + const char *interface_name, + const char *method_name, + GVariant *parameters, + GDBusMethodInvocation *invocation, + gpointer user_data) +{ + WebKitWebExtension *web_extension = WEBKIT_WEB_EXTENSION (user_data); + WebKitWebPage *web_page; + guint64 page_id; + + if (g_strcmp0 (interface_name, EPHY_WEB_EXTENSION_INTERFACE) != 0) + return; + + g_variant_get(parameters, "(t)", &page_id); + web_page = webkit_web_extension_get_page (web_extension, page_id); + if (!web_page) { + g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS, + "Invalid page ID: %"G_GUINT64_FORMAT, page_id); + return; + } + + if (g_strcmp0 (method_name, "HasModifiedForms") == 0) { + gboolean has_modifed_forms; + + has_modifed_forms = ephy_web_extension_page_has_modified_forms (web_page); + g_dbus_method_invocation_return_value (invocation, g_variant_new ("(b)", has_modifed_forms)); + } +} + +static const GDBusInterfaceVTable interface_vtable = { + handle_method_call, + NULL, + NULL +}; + +static void +bus_acquired_cb (GDBusConnection *connection, + const char *name, + gpointer user_data) +{ + guint registration_id; + GError *error = NULL; + static GDBusNodeInfo *introspection_data = NULL; + if (!introspection_data) + introspection_data = g_dbus_node_info_new_for_xml (introspection_xml, NULL); + + registration_id = g_dbus_connection_register_object (connection, + EPHY_WEB_EXTENSION_OBJECT_PATH, + introspection_data->interfaces[0], + &interface_vtable, + g_object_ref (user_data), + (GDestroyNotify)g_object_unref, + &error); + if (!registration_id) { + g_warning ("Failed to register object: %s\n", error->message); + g_error_free (error); + } +} + +G_MODULE_EXPORT void +webkit_web_extension_initialize (WebKitWebExtension *extension) +{ + g_bus_own_name (G_BUS_TYPE_SESSION, + EPHY_WEB_EXTENSION_SERVICE_NAME, + G_BUS_NAME_OWNER_FLAGS_NONE, + bus_acquired_cb, + NULL, NULL, + g_object_ref (extension), + (GDestroyNotify)g_object_unref); +} |