path: root/widgets/misc/e-web-view.c

/*
 * e-web-view.c
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "e-web-view.h"

#include <math.h>

#include <JavaScriptCore/JavaScript.h>

#include <string.h>
#include <glib/gi18n-lib.h>
#include <pango/pango.h>

#include <camel/camel.h>
#include <libebackend/libebackend.h>

#include <e-util/e-util.h>
#include <libevolution-utils/e-alert-dialog.h>
#include <libevolution-utils/e-alert-sink.h>
#include <e-util/e-plugin-ui.h>
#include <e-util/e-file-request.h>
#include <e-util/e-stock-request.h>

#define LIBSOUP_USE_UNSTABLE_REQUEST_API
#include <libsoup/soup.h>
#include <libsoup/soup-requester.h>

#include "e-popup-action.h"
#include "e-selectable.h"
#include <stdlib.h>

#define E_WEB_VIEW_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_WEB_VIEW, EWebViewPrivate))

typedef struct _EWebViewRequest EWebViewRequest;

struct _EWebViewPrivate {
    GList *requests;
    GtkUIManager *ui_manager;
    gchar *selected_uri;
    GdkPixbufAnimation *cursor_image;
    gchar *cursor_image_src;

    GHashTable *js_callbacks;

        GSList *highlights;

    GtkAction *open_proxy;
    GtkAction *print_proxy;
    GtkAction *save_as_proxy;

    /* Lockdown Options */
    guint disable_printing     : 1;
    guint disable_save_to_disk : 1;

    guint caret_mode : 1;

    GSettings *font_settings;
    GSettings *aliasing_settings;
};

enum {
    PROP_0,
    PROP_CARET_MODE,
    PROP_COPY_TARGET_LIST,
    PROP_CURSOR_IMAGE,
    PROP_CURSOR_IMAGE_SRC,
    PROP_DISABLE_PRINTING,
    PROP_DISABLE_SAVE_TO_DISK,
    PROP_INLINE_SPELLING,
    PROP_MAGIC_LINKS,
    PROP_MAGIC_SMILEYS,
    PROP_OPEN_PROXY,
    PROP_PRINT_PROXY,
    PROP_SAVE_AS_PROXY,
    PROP_SELECTED_URI
};

enum {
    POPUP_EVENT,
    STATUS_MESSAGE,
    STOP_LOADING,
    UPDATE_ACTIONS,
    PROCESS_MAILTO,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL];

static const gchar *ui =
"<ui>"
"  <popup name='context'>"
"    <menuitem action='copy-clipboard'/>"
"    <separator/>"
"    <placeholder name='custom-actions-1'>"
"      <menuitem action='open'/>"
"      <menuitem action='save-as'/>"
"      <menuitem action='http-open'/>"
"      <menuitem action='send-message'/>"
"      <menuitem action='print'/>"
"    </placeholder>"
"    <placeholder name='custom-actions-2'>"
"      <menuitem action='uri-copy'/>"
"      <menuitem action='mailto-copy'/>"
"      <menuitem action='image-copy'/>"
"    </placeholder>"
"    <placeholder name='custom-actions-3'/>"
"    <separator/>"
"    <menuitem action='select-all'/>"
"    <placeholder name='inspect-menu' />"
"  </popup>"
"</ui>";

/* Forward Declarations */
static void e_web_view_alert_sink_init (EAlertSinkInterface *interface);
static void e_web_view_selectable_init (ESelectableInterface *interface);

G_DEFINE_TYPE_WITH_CODE (
    EWebView,
    e_web_view,
    WEBKIT_TYPE_WEB_VIEW,
    G_IMPLEMENT_INTERFACE (
        E_TYPE_EXTENSIBLE, NULL)
    G_IMPLEMENT_INTERFACE (
        E_TYPE_ALERT_SINK,
        e_web_view_alert_sink_init)
    G_IMPLEMENT_INTERFACE (
        E_TYPE_SELECTABLE,
        e_web_view_selectable_init))

static void
action_copy_clipboard_cb (GtkAction *action,
                          EWebView *web_view)
{
    e_web_view_copy_clipboard (web_view);
}

static void
action_http_open_cb (GtkAction *action,
                     EWebView *web_view)
{
    const gchar *uri;
    gpointer parent;

    parent = gtk_widget_get_toplevel (GTK_WIDGET (web_view));
    parent = gtk_widget_is_toplevel (parent) ? parent : NULL;

    uri = e_web_view_get_selected_uri (web_view);
    g_return_if_fail (uri != NULL);

    e_show_uri (parent, uri);
}

static void
action_mailto_copy_cb (GtkAction *action,
                       EWebView *web_view)
{
    CamelURL *curl;
    CamelInternetAddress *inet_addr;
    GtkClipboard *clipboard;
    const gchar *uri;
    gchar *text;

    uri = e_web_view_get_selected_uri (web_view);
    g_return_if_fail (uri != NULL);

    /* This should work because we checked it in update_actions(). */
    curl = camel_url_new (uri, NULL);
    g_return_if_fail (curl != NULL);

    inet_addr = camel_internet_address_new ();
    camel_address_decode (CAMEL_ADDRESS (inet_addr), curl->path);
    text = camel_address_format (CAMEL_ADDRESS (inet_addr));
    if (text == NULL || *text == '\0')
        text = g_strdup (uri + strlen ("mailto:"));

    g_object_unref (inet_addr);
    camel_url_free (curl);

    clipboard = gtk_clipboard_get (GDK_SELECTION_PRIMARY);
    gtk_clipboard_set_text (clipboard, text, -1);
    gtk_clipboard_store (clipboard);

    clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
    gtk_clipboard_set_text (clipboard, text, -1);
    gtk_clipboard_store (clipboard);

    g_free (text);
}

static void
action_select_all_cb (GtkAction *action,
                      EWebView *web_view)
{
    e_web_view_select_all (web_view);
}

static void
action_send_message_cb (GtkAction *action,
                        EWebView *web_view)
{
    const gchar *uri;
    gpointer parent;
    gboolean handled;

    parent = gtk_widget_get_toplevel (GTK_WIDGET (web_view));
    parent = gtk_widget_is_toplevel (parent) ? parent : NULL;

    uri = e_web_view_get_selected_uri (web_view);
    g_return_if_fail (uri != NULL);

    handled = FALSE;
    g_signal_emit (web_view, signals[PROCESS_MAILTO], 0, uri, &handled);

    if (!handled)
        e_show_uri (parent, uri);
}

static void
action_uri_copy_cb (GtkAction *action,
                    EWebView *web_view)
{
    GtkClipboard *clipboard;
    const gchar *uri;

    clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
    uri = e_web_view_get_selected_uri (web_view);
    g_return_if_fail (uri != NULL);

    gtk_clipboard_set_text (clipboard, uri, -1);
    gtk_clipboard_store (clipboard);
}

static void
action_image_copy_cb (GtkAction *action,
                    EWebView *web_view)
{
    GtkClipboard *clipboard;
    GdkPixbufAnimation *animation;
    GdkPixbuf *pixbuf;

    clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
    animation = e_web_view_get_cursor_image (web_view);
    g_return_if_fail (animation != NULL);

    pixbuf = gdk_pixbuf_animation_get_static_image (animation);
    if (!pixbuf)
        return;

    gtk_clipboard_set_image (clipboard, pixbuf);
    gtk_clipboard_store (clipboard);
}

static GtkActionEntry uri_entries[] = {

    { "uri-copy",
      GTK_STOCK_COPY,
      N_("_Copy Link Location"),
      NULL,
      N_("Copy the link to the clipboard"),
      G_CALLBACK (action_uri_copy_cb) }
};

static GtkActionEntry http_entries[] = {

    { "http-open",
      "emblem-web",
      N_("_Open Link in Browser"),
      NULL,
      N_("Open the link in a web browser"),
      G_CALLBACK (action_http_open_cb) }
};

static GtkActionEntry mailto_entries[] = {

    { "mailto-copy",
      GTK_STOCK_COPY,
      N_("_Copy Email Address"),
      NULL,
      N_("Copy the email address to the clipboard"),
      G_CALLBACK (action_mailto_copy_cb) },

    { "send-message",
      "mail-message-new",
      N_("_Send New Message To..."),
      NULL,
      N_("Send a mail message to this address"),
      G_CALLBACK (action_send_message_cb) }
};

static GtkActionEntry image_entries[] = {

    { "image-copy",
      GTK_STOCK_COPY,
      N_("_Copy Image"),
      NULL,
      N_("Copy the image to the clipboard"),
      G_CALLBACK (action_image_copy_cb) }
};

static GtkActionEntry selection_entries[] = {

    { "copy-clipboard",
      GTK_STOCK_COPY,
      NULL,
      NULL,
      N_("Copy the selection"),
      G_CALLBACK (action_copy_clipboard_cb) },
};

static GtkActionEntry standard_entries[] = {

    { "select-all",
      GTK_STOCK_SELECT_ALL,
      NULL,
      NULL,
      N_("Select all text and images"),
      G_CALLBACK (action_select_all_cb) }
};

static void
web_view_menu_item_select_cb (EWebView *web_view,
                              GtkWidget *widget)
{
    GtkAction *action;
    GtkActivatable *activatable;
    const gchar *tooltip;

    activatable = GTK_ACTIVATABLE (widget);
    action = gtk_activatable_get_related_action (activatable);
    tooltip = gtk_action_get_tooltip (action);

    if (tooltip == NULL)
        return;

    e_web_view_status_message (web_view, tooltip);
}

static void
replace_text (WebKitDOMNode *node,
              const gchar *text,
              WebKitDOMNode *replacement)
{
        /* NodeType 3 = TEXT_NODE */
    if (webkit_dom_node_get_node_type (node) == 3) {

        gint text_length = strlen (text);

        while (node) {

            WebKitDOMNode *current_node, *replacement_node;
            const gchar *node_data, *offset;
            goffset split_offset;
            gint data_length;

            current_node = node;

                        /* Don't use the WEBKIT_DOM_CHARACTER_DATA macro for
                         * casting. WebKit lies about type of the object and
                         * GLib will throw runtime warning about node not being
                         * WebKitDOMCharacterData, but the function will return
                         * correct and valid data.
                         * IMO it's bug in the Gtk bindings and WebKit internally
                         * handles it by the nodeType so therefor it works
                         * event for "invalid" objects. But really, who knows..?
                         */
            node_data = webkit_dom_character_data_get_data (
                    (WebKitDOMCharacterData *) node);

            offset = strstr (node_data, text);
            if (!offset) {
                node = NULL;
                continue;
            }

            split_offset = offset - node_data + text_length;
            replacement_node =
                webkit_dom_node_clone_node (replacement, TRUE);

            data_length = webkit_dom_character_data_get_length (
                    (WebKitDOMCharacterData *) node);
            if (split_offset < data_length) {

                WebKitDOMNode *parent_node;

                node = WEBKIT_DOM_NODE (
                    webkit_dom_text_split_text (
                        (WebKitDOMText *) node,
                        offset - node_data + text_length,
                        NULL));
                parent_node = webkit_dom_node_get_parent_node (node);
                webkit_dom_node_insert_before (
                    parent_node, replacement_node,
                    node, NULL);

            } else {
                WebKitDOMNode *parent_node;

                parent_node = webkit_dom_node_get_parent_node (node);
                webkit_dom_node_append_child (
                    parent_node,
                    replacement_node, NULL);
            }

            webkit_dom_character_data_delete_data (
                (WebKitDOMCharacterData *) (current_node),
                offset - node_data, text_length, NULL);
        }

    } else {

        WebKitDOMNode *child, *next_child;

                /* Iframe? Let's traverse inside! */
        if (WEBKIT_DOM_IS_HTML_IFRAME_ELEMENT (node)) {

            WebKitDOMDocument *frame_document;

            frame_document =
                webkit_dom_html_iframe_element_get_content_document (
                    WEBKIT_DOM_HTML_IFRAME_ELEMENT (node));
            replace_text (WEBKIT_DOM_NODE (frame_document),
                      text, replacement);

        } else {

            child = webkit_dom_node_get_first_child (node);
            while (child) {
                next_child = webkit_dom_node_get_next_sibling (child);
                replace_text (child, text, replacement);
                child = next_child;
            }
        }
    }

}

static void
web_view_update_document_highlights (EWebView *web_view)
{
    WebKitDOMDocument *document;
    GSList *iter;

    document = webkit_web_view_get_dom_document (WEBKIT_WEB_VIEW (web_view));

    for (iter = web_view->priv->highlights; iter; iter = iter->next) {

        WebKitDOMDocumentFragment *frag;
        WebKitDOMElement *span;

        span = webkit_dom_document_create_element (document, "span", NULL);
        webkit_dom_html_element_set_class_name (
            WEBKIT_DOM_HTML_ELEMENT (span), "__evo-highlight");
        webkit_dom_html_element_set_inner_text (
            WEBKIT_DOM_HTML_ELEMENT (span), iter->data, NULL);

        frag = webkit_dom_document_create_document_fragment (document);
        webkit_dom_node_append_child (
            WEBKIT_DOM_NODE (frag), WEBKIT_DOM_NODE (span), NULL);

        replace_text (WEBKIT_DOM_NODE (document),
            iter->data, WEBKIT_DOM_NODE (frag));
    }
}

static void
web_view_menu_item_deselect_cb (EWebView *web_view)
{
    e_web_view_status_message (web_view, NULL);
}

static void
web_view_connect_proxy_cb (EWebView *web_view,
                           GtkAction *action,
                           GtkWidget *proxy)
{
    if (!GTK_IS_MENU_ITEM (proxy))
        return;

    g_signal_connect_swapped (
        proxy, "select",
        G_CALLBACK (web_view_menu_item_select_cb), web_view);

    g_signal_connect_swapped (
        proxy, "deselect",
        G_CALLBACK (web_view_menu_item_deselect_cb), web_view);
}

static GtkWidget *
web_view_create_plugin_widget_cb (EWebView *web_view,
                                  const gchar *mime_type,
                                  const gchar *uri,
                                  GHashTable *param)
{
    EWebViewClass *class;

    /* XXX WebKitWebView does not provide a class method for
     *     this signal, so we do so we can override the default
     *     behavior from subclasses for special URI types. */

    class = E_WEB_VIEW_GET_CLASS (web_view);
    g_return_val_if_fail (class->create_plugin_widget != NULL, NULL);

    return class->create_plugin_widget (web_view, mime_type, uri, param);
}

static void
web_view_hovering_over_link_cb (EWebView *web_view,
                                const gchar *title,
                                const gchar *uri)
{
    EWebViewClass *class;

    /* XXX WebKitWebView does not provide a class method for
     *     this signal, so we do so we can override the default
     *     behavior from subclasses for special URI types. */

    class = E_WEB_VIEW_GET_CLASS (web_view);
    g_return_if_fail (class->hovering_over_link != NULL);

    class->hovering_over_link (web_view, title, uri);
}

static gboolean
web_view_navigation_policy_decision_requested_cb (EWebView *web_view,
                                                  WebKitWebFrame *frame,
                                                  WebKitNetworkRequest *request,
                                                  WebKitWebNavigationAction *navigation_action,
                                                  WebKitWebPolicyDecision *policy_decision)
{
    EWebViewClass *class;
    WebKitWebNavigationReason reason;
    const gchar *uri;

    reason = webkit_web_navigation_action_get_reason (navigation_action);
    if (reason != WEBKIT_WEB_NAVIGATION_REASON_LINK_CLICKED)
        return FALSE;

    /* XXX WebKitWebView does not provide a class method for
     *     this signal, so we do so we can override the default
     *     behavior from subclasses for special URI types. */

    class = E_WEB_VIEW_GET_CLASS (web_view);
    g_return_val_if_fail (class->link_clicked != NULL, FALSE);

    webkit_web_policy_decision_ignore (policy_decision);

    uri = webkit_network_request_get_uri (request);

    class->link_clicked (web_view, uri);

    return TRUE;
}

static void
web_view_load_status_changed_cb (WebKitWebView *web_view,
                                 GParamSpec *pspec,
                                 gpointer user_data)
{
    WebKitLoadStatus status;

    status = webkit_web_view_get_load_status (web_view);
    if (status != WEBKIT_LOAD_FINISHED)
        return;

    web_view_update_document_highlights (E_WEB_VIEW (web_view));
}

static void
web_view_set_property (GObject *object,
                       guint property_id,
                       const GValue *value,
                       GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_CARET_MODE:
            e_web_view_set_caret_mode (
                E_WEB_VIEW (object),
                g_value_get_boolean (value));
            return;

        case PROP_CURSOR_IMAGE:
            e_web_view_set_cursor_image (
                E_WEB_VIEW (object),
                g_value_get_object (value));
            return;

        case PROP_CURSOR_IMAGE_SRC:
            e_web_view_set_cursor_image_src (
                E_WEB_VIEW (object),
                g_value_get_string (value));
            return;

        case PROP_DISABLE_PRINTING:
            e_web_view_set_disable_printing (
                E_WEB_VIEW (object),
                g_value_get_boolean (value));
            return;

        case PROP_DISABLE_SAVE_TO_DISK:
            e_web_view_set_disable_save_to_disk (
                E_WEB_VIEW (object),
                g_value_get_boolean (value));
            return;

        case PROP_INLINE_SPELLING:
            e_web_view_set_inline_spelling (
                E_WEB_VIEW (object),
                g_value_get_boolean (value));
            return;

        case PROP_MAGIC_LINKS:
            e_web_view_set_magic_links (
                E_WEB_VIEW (object),
                g_value_get_boolean (value));
            return;

        case PROP_MAGIC_SMILEYS:
            e_web_view_set_magic_smileys (
                E_WEB_VIEW (object),
                g_value_get_boolean (value));
            return;

        case PROP_OPEN_PROXY:
            e_web_view_set_open_proxy (
                E_WEB_VIEW (object),
                g_value_get_object (value));
            return;

        case PROP_PRINT_PROXY:
            e_web_view_set_print_proxy (
                E_WEB_VIEW (object),
                g_value_get_object (value));
            return;

        case PROP_SAVE_AS_PROXY:
            e_web_view_set_save_as_proxy (
                E_WEB_VIEW (object),
                g_value_get_object (value));
            return;

        case PROP_SELECTED_URI:
            e_web_view_set_selected_uri (
                E_WEB_VIEW (object),
                g_value_get_string (value));
            return;
    }
    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
web_view_get_property (GObject *object,
                       guint property_id,
                       GValue *value,
                       GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_CARET_MODE:
            g_value_set_boolean (
                value, e_web_view_get_caret_mode (
                E_WEB_VIEW (object)));
            return;

        case PROP_CURSOR_IMAGE:
            g_value_set_object (
                value, e_web_view_get_cursor_image (
                E_WEB_VIEW (object)));
            return;

        case PROP_CURSOR_IMAGE_SRC:
            g_value_set_string (
                value, e_web_view_get_cursor_image_src (
                E_WEB_VIEW (object)));
            return;

        case PROP_DISABLE_PRINTING:
            g_value_set_boolean (
                value, e_web_view_get_disable_printing (
                E_WEB_VIEW (object)));
            return;

        case PROP_DISABLE_SAVE_TO_DISK:
            g_value_set_boolean (
                value, e_web_view_get_disable_save_to_disk (
                E_WEB_VIEW (object)));
            return;

        case PROP_INLINE_SPELLING:
            g_value_set_boolean (
                value, e_web_view_get_inline_spelling (
                E_WEB_VIEW (object)));
            return;

        case PROP_MAGIC_LINKS:
            g_value_set_boolean (
                value, e_web_view_get_magic_links (
                E_WEB_VIEW (object)));
            return;

        case PROP_MAGIC_SMILEYS:
            g_value_set_boolean (
                value, e_web_view_get_magic_smileys (
                E_WEB_VIEW (object)));
            return;

        case PROP_OPEN_PROXY:
            g_value_set_object (
                value, e_web_view_get_open_proxy (
                E_WEB_VIEW (object)));
            return;

        case PROP_PRINT_PROXY:
            g_value_set_object (
                value, e_web_view_get_print_proxy (
                E_WEB_VIEW (object)));
            return;

        case PROP_SAVE_AS_PROXY:
            g_value_set_object (
                value, e_web_view_get_save_as_proxy (
                E_WEB_VIEW (object)));
            return;

        case PROP_SELECTED_URI:
            g_value_set_string (
                value, e_web_view_get_selected_uri (
                E_WEB_VIEW (object)));
            return;

    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
web_view_dispose (GObject *object)
{
    EWebViewPrivate *priv;

    priv = E_WEB_VIEW_GET_PRIVATE (object);

    if (priv->ui_manager != NULL) {
        g_object_unref (priv->ui_manager);
        priv->ui_manager = NULL;
    }

    if (priv->open_proxy != NULL) {
        g_object_unref (priv->open_proxy);
        priv->open_proxy = NULL;
    }

    if (priv->print_proxy != NULL) {
        g_object_unref (priv->print_proxy);
        priv->print_proxy = NULL;
    }

    if (priv->save_as_proxy != NULL) {
        g_object_unref (priv->save_as_proxy);
        priv->save_as_proxy = NULL;
    }

    if (priv->cursor_image != NULL) {
        g_object_unref (priv->cursor_image);
        priv->cursor_image = NULL;
    }

    if (priv->cursor_image_src != NULL) {
        g_free (priv->cursor_image_src);
        priv->cursor_image_src = NULL;
    }

    if (priv->js_callbacks != NULL) {
        g_hash_table_destroy (priv->js_callbacks);
        priv->js_callbacks = NULL;
    }

    if (priv->highlights != NULL) {
        g_slist_free_full (priv->highlights, g_free);
        priv->highlights = NULL;
    }

    if (priv->aliasing_settings != NULL) {
        g_object_unref (priv->aliasing_settings);
        priv->aliasing_settings = NULL;
    }

    if (priv->font_settings != NULL) {
        g_object_unref (priv->font_settings);
        priv->font_settings = NULL;
    }

    /* Chain up to parent's dispose() method. */
    G_OBJECT_CLASS (e_web_view_parent_class)->dispose (object);
}

static void
web_view_finalize (GObject *object)
{
    EWebViewPrivate *priv;

    priv = E_WEB_VIEW_GET_PRIVATE (object);

    /* All URI requests should be complete or cancelled by now. */
    if (priv->requests != NULL)
        g_warning ("Finalizing EWebView with active URI requests");

    g_free (priv->selected_uri);

    /* Chain up to parent's finalize() method. */
    G_OBJECT_CLASS (e_web_view_parent_class)->finalize (object);
}

static void
web_view_constructed (GObject *object)
{
#ifndef G_OS_WIN32
    GSettings *settings;

    settings = g_settings_new ("org.gnome.desktop.lockdown");

    g_settings_bind (
        settings, "disable-printing",
        object, "disable-printing",
        G_SETTINGS_BIND_GET);

    g_settings_bind (
        settings, "disable-save-to-disk",
        object, "disable-save-to-disk",
        G_SETTINGS_BIND_GET);

    g_object_unref (settings);
#endif

    e_extensible_load_extensions (E_EXTENSIBLE (object));

    /* Chain up to parent's constructed() method. */
    G_OBJECT_CLASS (e_web_view_parent_class)->constructed (object);
}

static gboolean
web_view_button_press_event (GtkWidget *widget,
                             GdkEventButton *event)
{
    GtkWidgetClass *widget_class;
    EWebView *web_view;
    gboolean event_handled = FALSE;
    gchar *uri;

    web_view = E_WEB_VIEW (widget);

    if (event) {
        WebKitHitTestResult *test;
        WebKitHitTestResultContext context;

        if (web_view->priv->cursor_image) {
            g_object_unref (web_view->priv->cursor_image);
            web_view->priv->cursor_image = NULL;
        }

        if (web_view->priv->cursor_image_src) {
            g_free (web_view->priv->cursor_image_src);
            web_view->priv->cursor_image_src = NULL;
        }

        test = webkit_web_view_get_hit_test_result (WEBKIT_WEB_VIEW (web_view), event);
        if (!test)
            goto chainup;

        g_object_get (G_OBJECT (test), "context", &context, NULL);
        if (context & WEBKIT_HIT_TEST_RESULT_CONTEXT_IMAGE) {
            WebKitWebDataSource *data_source;
            WebKitWebFrame *frame;
            GList *subresources, *res;

            g_object_get (G_OBJECT (test), "image-uri", &uri, NULL);

            if (!uri)
                goto chainup;

            if (web_view->priv->cursor_image_src)
                g_free (web_view->priv->cursor_image_src);
            web_view->priv->cursor_image_src = uri;

                        /* Iterate through all resources of the loaded webpage and
               try to find resource with URI matching cursor_image_src */
            frame = webkit_web_view_get_main_frame (WEBKIT_WEB_VIEW (web_view));
            data_source = webkit_web_frame_get_data_source (frame);
            subresources = webkit_web_data_source_get_subresources (data_source);
            for (res = subresources; res; res = res->next) {
                WebKitWebResource *src = res->data;
                GdkPixbufLoader *loader;
                GString *data;

                if (g_strcmp0 (webkit_web_resource_get_uri (src),
                    web_view->priv->cursor_image_src) != 0)
                    continue;

                data = webkit_web_resource_get_data (src);
                if (!data)
                    break;

                loader = gdk_pixbuf_loader_new ();
                if (!gdk_pixbuf_loader_write (loader,
                    (guchar *) data->str, data->len, NULL)) {
                    g_object_unref (loader);
                    break;
                }
                gdk_pixbuf_loader_close (loader, NULL);

                if (web_view->priv->cursor_image)
                    g_object_unref (web_view->priv->cursor_image);

                web_view->priv->cursor_image =
                    g_object_ref (gdk_pixbuf_loader_get_animation (loader));

                g_object_unref (loader);
                break;
            }
        }

        g_object_unref (test);
    }

    if (event != NULL && event->button != 3)
        goto chainup;

    uri = e_web_view_extract_uri (web_view, event);

    g_signal_emit (
        web_view, signals[POPUP_EVENT], 0,
        event, uri, &event_handled);

    g_free (uri);

    if (event_handled)
        return TRUE;

chainup:
    /* Chain up to parent's button_press_event() method. */
    widget_class = GTK_WIDGET_CLASS (e_web_view_parent_class);
    return widget_class->button_press_event (widget, event);
}

static gboolean
web_view_scroll_event (GtkWidget *widget,
                       GdkEventScroll *event)
{
    if (event->state & GDK_CONTROL_MASK) {
        GdkScrollDirection direction = event->direction;

        #if GTK_CHECK_VERSION(3,3,18)
        if (direction == GDK_SCROLL_SMOOTH) {
            static gdouble total_delta_y = 0.0;

            total_delta_y += event->delta_y;

            if (total_delta_y >= 1.0) {
                total_delta_y = 0.0;
                direction = GDK_SCROLL_DOWN;
            } else if (total_delta_y <= -1.0) {
                total_delta_y = 0.0;
                direction = GDK_SCROLL_UP;
            } else {
                return FALSE;
            }
        }
        #endif

        switch (direction) {
            case GDK_SCROLL_UP:
                e_web_view_zoom_in (E_WEB_VIEW (widget));
                return TRUE;
            case GDK_SCROLL_DOWN:
                e_web_view_zoom_out (E_WEB_VIEW (widget));
                return TRUE;
            default:
                break;
        }
    }

    return FALSE;
}

static GtkWidget *
web_view_create_plugin_widget (EWebView *web_view,
                               const gchar *mime_type,
                               const gchar *uri,
                               GHashTable *param)
{
    GtkWidget *widget = NULL;

    if (g_strcmp0 (mime_type, "image/x-themed-icon") == 0) {
        GtkIconTheme *icon_theme;
        GdkPixbuf *pixbuf;
        gpointer data;
        glong size = 0;
        GError *error = NULL;

        icon_theme = gtk_icon_theme_get_default ();

        if (size == 0) {
            data = g_hash_table_lookup (param, "width");
            if (data != NULL)
                size = MAX (size, strtol (data, NULL, 10));
        }

        if (size == 0) {
            data = g_hash_table_lookup (param, "height");
            if (data != NULL)
                size = MAX (size, strtol (data, NULL, 10));
        }

        if (size == 0)
            size = 32;  /* arbitrary default */

        pixbuf = gtk_icon_theme_load_icon (
            icon_theme, uri, size, 0, &error);
        if (pixbuf != NULL) {
            widget = gtk_image_new_from_pixbuf (pixbuf);
            g_object_unref (pixbuf);
        } else if (error != NULL) {
            g_warning ("%s", error->message);
            g_error_free (error);
        }
    }

    return widget;
}

static gchar *
web_view_extract_uri (EWebView *web_view,
                      GdkEventButton *event)
{
    WebKitHitTestResult *result;
    WebKitHitTestResultContext context;
    gchar *uri = NULL;

    result = webkit_web_view_get_hit_test_result (
        WEBKIT_WEB_VIEW (web_view), event);

    g_object_get (result, "context", &context, "link-uri", &uri, NULL);
    g_object_unref (result);

    if (context & WEBKIT_HIT_TEST_RESULT_CONTEXT_LINK)
        return uri;

    g_free (uri);

    return NULL;
}

static void
web_view_hovering_over_link (EWebView *web_view,
                             const gchar *title,
                             const gchar *uri)
{
    CamelInternetAddress *address;
    CamelURL *curl;
    const gchar *format = NULL;
    gchar *message = NULL;
    gchar *who;

    if (uri == NULL || *uri == '\0')
        goto exit;

    if (g_str_has_prefix (uri, "mailto:"))
        format = _("Click to mail %s");
    else if (g_str_has_prefix (uri, "callto:"))
        format = _("Click to call %s");
    else if (g_str_has_prefix (uri, "h323:"))
        format = _("Click to call %s");
    else if (g_str_has_prefix (uri, "sip:"))
        format = _("Click to call %s");
    else if (g_str_has_prefix (uri, "##"))
        message = g_strdup (_("Click to hide/unhide addresses"));
    else
        message = g_strdup_printf (_("Click to open %s"), uri);

    if (format == NULL)
        goto exit;

    /* XXX Use something other than Camel here.  Surely
     *     there's other APIs around that can do this. */
    curl = camel_url_new (uri, NULL);
    address = camel_internet_address_new ();
    camel_address_decode (CAMEL_ADDRESS (address), curl->path);
    who = camel_address_format (CAMEL_ADDRESS (address));
    g_object_unref (address);
    camel_url_free (curl);

    if (who == NULL)
        who = g_strdup (strchr (uri, ':') + 1);

    message = g_strdup_printf (format, who);

    g_free (who);

exit:
    e_web_view_status_message (web_view, message);

    g_free (message);
}

static void
web_view_link_clicked (EWebView *web_view,
                       const gchar *uri)
{
    gpointer parent;

    if (uri && g_ascii_strncasecmp (uri, "mailto:", 7) == 0) {
        gboolean handled = FALSE;

        g_signal_emit (web_view, signals[PROCESS_MAILTO], 0, uri, &handled);

        if (handled)
            return;
    }

    parent = gtk_widget_get_toplevel (GTK_WIDGET (web_view));
    parent = gtk_widget_is_toplevel (parent) ? parent : NULL;

    e_show_uri (parent, uri);
}

static void
web_view_load_string (EWebView *web_view,
                      const gchar *string)
{
    if (string == NULL)
        string = "";

    webkit_web_view_load_string (
        WEBKIT_WEB_VIEW (web_view),
        string, "text/html", "UTF-8", "evo-file:///");
}

static void
web_view_load_uri (EWebView *web_view,
                   const gchar *uri)
{
    if (uri == NULL)
        uri = "about:blank";

    webkit_web_view_load_uri (
        WEBKIT_WEB_VIEW (web_view), uri);
}

static void
web_view_frame_load_string (EWebView *web_view,
                            const gchar *frame_name,
                            const gchar *string)
{
    WebKitWebFrame *main_frame, *frame;

    if (string == NULL)
        string = "";

    main_frame = webkit_web_view_get_main_frame (WEBKIT_WEB_VIEW (web_view));
    if (main_frame) {
        frame = webkit_web_frame_find_frame (main_frame, frame_name);

        if (frame)
            webkit_web_frame_load_string (
                frame, string, "text/html", "UTF-8", "evo-file:///");
    }
}

static void
web_view_frame_load_uri (EWebView *web_view,
                         const gchar *frame_name,
                         const gchar *uri)
{
    WebKitWebFrame *main_frame, *frame;

    if (uri == NULL)
        uri = "about:blank";

    main_frame = webkit_web_view_get_main_frame (WEBKIT_WEB_VIEW (web_view));
    if (main_frame) {
        frame = webkit_web_frame_find_frame (main_frame, frame_name);

        if (frame)
            webkit_web_frame_load_uri (frame, uri);
    }
}

static gboolean
web_view_popup_event (EWebView *web_view,
                      GdkEventButton *event,
                      const gchar *uri)
{
    e_web_view_set_selected_uri (web_view, uri);
    e_web_view_show_popup_menu (web_view, event, NULL, NULL);

    return TRUE;
}

static void
web_view_stop_loading (EWebView *web_view)
{
    webkit_web_view_stop_loading (WEBKIT_WEB_VIEW (web_view));
}

static void
web_view_update_actions (EWebView *web_view,
                         GdkEventButton *event)
{
    GtkActionGroup *action_group;
    gboolean can_copy;
    gboolean scheme_is_http = FALSE;
    gboolean scheme_is_mailto = FALSE;
    gboolean uri_is_valid = FALSE;
    gboolean has_cursor_image;
    gboolean visible;
    WebKitHitTestResult *hit_test;
    WebKitHitTestResultContext context;
    const gchar *group_name;
    const gchar *uri;

    uri = e_web_view_get_selected_uri (web_view);
    can_copy = webkit_web_view_can_copy_clipboard (
                WEBKIT_WEB_VIEW (web_view));
    hit_test = webkit_web_view_get_hit_test_result (
            WEBKIT_WEB_VIEW (web_view), event);
    g_object_get (G_OBJECT (hit_test), "context", &context, NULL);

    has_cursor_image = (context & WEBKIT_HIT_TEST_RESULT_CONTEXT_IMAGE);

    /* Parse the URI early so we know if the actions will work. */
    if (uri != NULL) {
        CamelURL *curl;

        curl = camel_url_new (uri, NULL);
        uri_is_valid = (curl != NULL);
        camel_url_free (curl);

        scheme_is_http =
            (g_ascii_strncasecmp (uri, "http:", 5) == 0) ||
            (g_ascii_strncasecmp (uri, "https:", 6) == 0);

        scheme_is_mailto =
            (g_ascii_strncasecmp (uri, "mailto:", 7) == 0);
    }

    /* Allow copying the URI even if it's malformed. */
    group_name = "uri";
    visible = (uri != NULL) && !scheme_is_mailto;
    action_group = e_web_view_get_action_group (web_view, group_name);
    gtk_action_group_set_visible (action_group, visible);

    group_name = "http";
    visible = uri_is_valid && scheme_is_http;
    action_group = e_web_view_get_action_group (web_view, group_name);
    gtk_action_group_set_visible (action_group, visible);

    group_name = "mailto";
    visible = uri_is_valid && scheme_is_mailto;
    action_group = e_web_view_get_action_group (web_view, group_name);
    gtk_action_group_set_visible (action_group, visible);

    group_name = "image";
    visible = has_cursor_image;
    action_group = e_web_view_get_action_group (web_view, group_name);
    gtk_action_group_set_visible (action_group, visible);

    group_name = "selection";
    visible = can_copy;
    action_group = e_web_view_get_action_group (web_view, group_name);
    gtk_action_group_set_visible (action_group, visible);

    group_name = "standard";
    visible = (uri == NULL);
    action_group = e_web_view_get_action_group (web_view, group_name);
    gtk_action_group_set_visible (action_group, visible);

    group_name = "lockdown-printing";
    visible = (uri == NULL) && !web_view->priv->disable_printing;
    action_group = e_web_view_get_action_group (web_view, group_name);
    gtk_action_group_set_visible (action_group, visible);

    group_name = "lockdown-save-to-disk";
    visible = (uri == NULL) && !web_view->priv->disable_save_to_disk;
    action_group = e_web_view_get_action_group (web_view, group_name);
    gtk_action_group_set_visible (action_group, visible);
}

static void
web_view_submit_alert (EAlertSink *alert_sink,
                       EAlert *alert)
{
    EWebView *web_view;
    GtkWidget *dialog;
    GString *buffer;
    const gchar *icon_name = NULL;
    gpointer parent;

    web_view = E_WEB_VIEW (alert_sink);

    parent = gtk_widget_get_toplevel (GTK_WIDGET (web_view));
    parent = gtk_widget_is_toplevel (parent) ? parent : NULL;

    switch (e_alert_get_message_type (alert)) {
        case GTK_MESSAGE_INFO:
            icon_name = GTK_STOCK_DIALOG_INFO;
            break;

        case GTK_MESSAGE_WARNING:
            icon_name = GTK_STOCK_DIALOG_WARNING;
            break;

        case GTK_MESSAGE_ERROR:
            icon_name = GTK_STOCK_DIALOG_ERROR;
            break;

        default:
            dialog = e_alert_dialog_new (parent, alert);
            gtk_dialog_run (GTK_DIALOG (dialog));
            gtk_widget_destroy (dialog);
            return;
    }

    buffer = g_string_sized_new (512);

    g_string_append (
        buffer,
        "<html>"
        "<head>"
        "<meta http-equiv=\"content-type\""
        " content=\"text/html; charset=utf-8\">"
        "</head>"
        "<body>");

    g_string_append (
        buffer,
        "<table bgcolor='#000000' width='100%'"
        " cellpadding='1' cellspacing='0'>"
        "<tr>"
        "<td>"
        "<table bgcolor='#dddddd' width='100%' cellpadding='6'>"
        "<tr>");

    g_string_append_printf (
        buffer,
        "<tr>"
        "<td valign='top'>"
        "<img src='gtk-stock://%s/?size=%d'/>"
        "</td>"
        "<td align='left' width='100%%'>"
        "<h3>%s</h3>"
        "%s"
        "</td>"
        "</tr>",
        icon_name,
        GTK_ICON_SIZE_DIALOG,
        e_alert_get_primary_text (alert),
        e_alert_get_secondary_text (alert));

    g_string_append (
        buffer,
        "</table>"
        "</td>"
        "</tr>"
        "</table>"
        "</body>"
        "</html>");

    e_web_view_load_string (web_view, buffer->str);

    g_string_free (buffer, TRUE);
}

static void
web_view_selectable_update_actions (ESelectable *selectable,
                                    EFocusTracker *focus_tracker,
                                    GdkAtom *clipboard_targets,
                                    gint n_clipboard_targets)
{
    WebKitWebView *web_view;
    GtkAction *action;
    gboolean sensitive;
    const gchar *tooltip;

    web_view = WEBKIT_WEB_VIEW (selectable);

    action = e_focus_tracker_get_cut_clipboard_action (focus_tracker);
    sensitive = webkit_web_view_can_cut_clipboard (web_view);
    tooltip = _("Cut the selection");
    gtk_action_set_sensitive (action, sensitive);
    gtk_action_set_tooltip (action, tooltip);

    action = e_focus_tracker_get_copy_clipboard_action (focus_tracker);
    sensitive = webkit_web_view_can_copy_clipboard (web_view);
    tooltip = _("Copy the selection");
    gtk_action_set_sensitive (action, sensitive);
    gtk_action_set_tooltip (action, tooltip);

    action = e_focus_tracker_get_paste_clipboard_action (focus_tracker);
    sensitive = webkit_web_view_can_paste_clipboard (web_view);
    tooltip = _("Paste the clipboard");
    gtk_action_set_sensitive (action, sensitive);
    gtk_action_set_tooltip (action, tooltip);

    action = e_focus_tracker_get_select_all_action (focus_tracker);
    sensitive = TRUE;
    tooltip = _("Select all text and images");
    gtk_action_set_sensitive (action, sensitive);
    gtk_action_set_tooltip (action, tooltip);
}

static void
web_view_selectable_cut_clipboard (ESelectable *selectable)
{
    e_web_view_cut_clipboard (E_WEB_VIEW (selectable));
}

static void
web_view_selectable_copy_clipboard (ESelectable *selectable)
{
    e_web_view_copy_clipboard (E_WEB_VIEW (selectable));
}

static void
web_view_selectable_paste_clipboard (ESelectable *selectable)
{
    e_web_view_paste_clipboard (E_WEB_VIEW (selectable));
}

static void
web_view_selectable_select_all (ESelectable *selectable)
{
    e_web_view_select_all (E_WEB_VIEW (selectable));
}

static void
e_web_view_class_init (EWebViewClass *class)
{
    GObjectClass *object_class;
    GtkWidgetClass *widget_class;
#if 0  /* WEBKIT */
    GtkHTMLClass *html_class;
#endif

    g_type_class_add_private (class, sizeof (EWebViewPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = web_view_set_property;
    object_class->get_property = web_view_get_property;
    object_class->dispose = web_view_dispose;
    object_class->finalize = web_view_finalize;
    object_class->constructed = web_view_constructed;

    widget_class = GTK_WIDGET_CLASS (class);
    widget_class->button_press_event = web_view_button_press_event;
    widget_class->scroll_event = web_view_scroll_event;

#if 0  /* WEBKIT */
    html_class = GTK_HTML_CLASS (class);
    html_class->url_requested = web_view_url_requested;
#endif

    class->create_plugin_widget = web_view_create_plugin_widget;
    class->extract_uri = web_view_extract_uri;
    class->hovering_over_link = web_view_hovering_over_link;
    class->link_clicked = web_view_link_clicked;
    class->load_string = web_view_load_string;
    class->load_uri = web_view_load_uri;
    class->frame_load_string = web_view_frame_load_string;
    class->frame_load_uri = web_view_frame_load_uri;
    class->popup_event = web_view_popup_event;
    class->stop_loading = web_view_stop_loading;
    class->update_actions = web_view_update_actions;

    g_object_class_install_property (
        object_class,
        PROP_CARET_MODE,
        g_param_spec_boolean (
            "caret-mode",
            "Caret Mode",
            NULL,
            FALSE,
            G_PARAM_READWRITE));

    g_object_class_install_property (
        object_class,
        PROP_CURSOR_IMAGE,
        g_param_spec_object (
            "cursor-image",
            "Image animation at the mouse cursor",
            NULL,
            GDK_TYPE_PIXBUF_ANIMATION,
            G_PARAM_READWRITE));

    g_object_class_install_property (
        object_class,
        PROP_CURSOR_IMAGE_SRC,
        g_param_spec_string (
            "cursor-image-src",
            "Image source uri at the mouse cursor",
            NULL,
            NULL,
            G_PARAM_READWRITE));

    g_object_class_install_property (
        object_class,
        PROP_DISABLE_PRINTING,
        g_param_spec_boolean (
            "disable-printing",
            "Disable Printing",
            NULL,
            FALSE,
            G_PARAM_READWRITE |
            G_PARAM_CONSTRUCT));

    g_object_class_install_property (
        object_class,
        PROP_DISABLE_SAVE_TO_DISK,
        g_param_spec_boolean (
            "disable-save-to-disk",
            "Disable Save-to-Disk",
            NULL,
            FALSE,
            G_PARAM_READWRITE |
            G_PARAM_CONSTRUCT));

    g_object_class_install_property (
        object_class,
        PROP_INLINE_SPELLING,
        g_param_spec_boolean (
            "inline-spelling",
            "Inline Spelling",
            NULL,
            FALSE,
            G_PARAM_READWRITE));

    g_object_class_install_property (
        object_class,
        PROP_MAGIC_LINKS,
        g_param_spec_boolean (
            "magic-links",
            "Magic Links",
            NULL,
            FALSE,
            G_PARAM_READWRITE));

    g_object_class_install_property (
        object_class,
        PROP_MAGIC_SMILEYS,
        g_param_spec_boolean (
            "magic-smileys",
            "Magic Smileys",
            NULL,
            FALSE,
            G_PARAM_READWRITE));

    g_object_class_install_property (
        object_class,
        PROP_OPEN_PROXY,
        g_param_spec_object (
            "open-proxy",
            "Open Proxy",
            NULL,
            GTK_TYPE_ACTION,
            G_PARAM_READWRITE));

    g_object_class_install_property (
        object_class,
        PROP_PRINT_PROXY,
        g_param_spec_object (
            "print-proxy",
            "Print Proxy",
            NULL,
            GTK_TYPE_ACTION,
            G_PARAM_READWRITE));

    g_object_class_install_property (
        object_class,
        PROP_SAVE_AS_PROXY,
        g_param_spec_object (
            "save-as-proxy",
            "Save As Proxy",
            NULL,
            GTK_TYPE_ACTION,
            G_PARAM_READWRITE));

    g_object_class_install_property (
        object_class,
        PROP_SELECTED_URI,
        g_param_spec_string (
            "selected-uri",
            "Selected URI",
            NULL,
            NULL,
            G_PARAM_READWRITE));

    signals[POPUP_EVENT] = g_signal_new (
        "popup-event",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_LAST,
        G_STRUCT_OFFSET (EWebViewClass, popup_event),
        g_signal_accumulator_true_handled, NULL,
        e_marshal_BOOLEAN__BOXED_STRING,
        G_TYPE_BOOLEAN, 2,
        GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE,
        G_TYPE_STRING);

    signals[STATUS_MESSAGE] = g_signal_new (
        "status-message",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_LAST,
        G_STRUCT_OFFSET (EWebViewClass, status_message),
        NULL, NULL,
        g_cclosure_marshal_VOID__STRING,
        G_TYPE_NONE, 1,
        G_TYPE_STRING);

    signals[STOP_LOADING] = g_signal_new (
        "stop-loading",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_LAST,
        G_STRUCT_OFFSET (EWebViewClass, stop_loading),
        NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE, 0);

    signals[UPDATE_ACTIONS] = g_signal_new (
        "update-actions",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_LAST,
        G_STRUCT_OFFSET (EWebViewClass, update_actions),
        NULL, NULL,
        g_cclosure_marshal_VOID__POINTER,
        G_TYPE_NONE, 1, G_TYPE_POINTER);

    /* return TRUE when a signal handler processed the mailto URI */
    signals[PROCESS_MAILTO] = g_signal_new (
        "process-mailto",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_LAST,
        G_STRUCT_OFFSET (EWebViewClass, process_mailto),
        NULL, NULL,
        e_marshal_BOOLEAN__STRING,
        G_TYPE_BOOLEAN, 1, G_TYPE_STRING);
}

static void
e_web_view_alert_sink_init (EAlertSinkInterface *interface)
{
    interface->submit_alert = web_view_submit_alert;
}

static void
e_web_view_selectable_init (ESelectableInterface *interface)
{
    interface->update_actions = web_view_selectable_update_actions;
    interface->cut_clipboard = web_view_selectable_cut_clipboard;
    interface->copy_clipboard = web_view_selectable_copy_clipboard;
    interface->paste_clipboard = web_view_selectable_paste_clipboard;
    interface->select_all = web_view_selectable_select_all;
}

static void
e_web_view_init (EWebView *web_view)
{
    GtkUIManager *ui_manager;
    GtkActionGroup *action_group;
    EPopupAction *popup_action;
    WebKitWebSettings *web_settings;
    GSettingsSchema *settings_schema;
    GSettings *settings;
    const gchar *domain = GETTEXT_PACKAGE;
    const gchar *id;
    GError *error = NULL;

    web_view->priv = E_WEB_VIEW_GET_PRIVATE (web_view);

    web_view->priv->highlights = NULL;

    g_signal_connect (
        web_view, "create-plugin-widget",
        G_CALLBACK (web_view_create_plugin_widget_cb), NULL);

    g_signal_connect (
        web_view, "hovering-over-link",
        G_CALLBACK (web_view_hovering_over_link_cb), NULL);

    g_signal_connect (
        web_view, "navigation-policy-decision-requested",
        G_CALLBACK (web_view_navigation_policy_decision_requested_cb),
        NULL);

    g_signal_connect (
        web_view, "new-window-policy-decision-requested",
        G_CALLBACK (web_view_navigation_policy_decision_requested_cb),
        NULL);

    g_signal_connect (
        web_view, "notify::load-status",
        G_CALLBACK (web_view_load_status_changed_cb), NULL);

    ui_manager = gtk_ui_manager_new ();
    web_view->priv->ui_manager = ui_manager;

    web_view->priv->js_callbacks = g_hash_table_new_full (g_str_hash, g_str_equal,
        (GDestroyNotify) g_free, NULL);

    g_signal_connect_swapped (
        ui_manager, "connect-proxy",
        G_CALLBACK (web_view_connect_proxy_cb), web_view);

    web_settings = e_web_view_get_default_settings ();
    e_web_view_set_settings (web_view, web_settings);
    g_object_unref (web_settings);

    e_web_view_install_request_handler (web_view, E_TYPE_FILE_REQUEST);
    e_web_view_install_request_handler (web_view, E_TYPE_STOCK_REQUEST);

    settings = g_settings_new ("org.gnome.desktop.interface");
    g_signal_connect_swapped (
        settings, "changed::font-name",
        G_CALLBACK (e_web_view_update_fonts), web_view);
    g_signal_connect_swapped (
        settings, "changed::monospace-font-name",
        G_CALLBACK (e_web_view_update_fonts), web_view);
    web_view->priv->font_settings = settings;

    /* This schema is optional.  Use if available. */
    id = "org.gnome.settings-daemon.plugins.xsettings";
    settings_schema = g_settings_schema_source_lookup (
        g_settings_schema_source_get_default (), id, FALSE);
    if (settings_schema != NULL) {
        settings = g_settings_new (id);
        g_signal_connect_swapped (
            settings, "changed::antialiasing",
            G_CALLBACK (e_web_view_update_fonts), web_view);
        web_view->priv->aliasing_settings = settings;
    }

    e_web_view_update_fonts (web_view);

    action_group = gtk_action_group_new ("uri");
    gtk_action_group_set_translation_domain (action_group, domain);
    gtk_ui_manager_insert_action_group (ui_manager, action_group, 0);
    g_object_unref (action_group);

    gtk_action_group_add_actions (
        action_group, uri_entries,
        G_N_ELEMENTS (uri_entries), web_view);

    action_group = gtk_action_group_new ("http");
    gtk_action_group_set_translation_domain (action_group, domain);
    gtk_ui_manager_insert_action_group (ui_manager, action_group, 0);
    g_object_unref (action_group);

    gtk_action_group_add_actions (
        action_group, http_entries,
        G_N_ELEMENTS (http_entries), web_view);

    action_group = gtk_action_group_new ("mailto");
    gtk_action_group_set_translation_domain (action_group, domain);
    gtk_ui_manager_insert_action_group (ui_manager, action_group, 0);
    g_object_unref (action_group);

    gtk_action_group_add_actions (
        action_group, mailto_entries,
        G_N_ELEMENTS (mailto_entries), web_view);

    action_group = gtk_action_group_new ("image");
    gtk_action_group_set_translation_domain (action_group, domain);
    gtk_ui_manager_insert_action_group (ui_manager, action_group, 0);
    g_object_unref (action_group);

    gtk_action_group_add_actions (
        action_group, image_entries,
        G_N_ELEMENTS (image_entries), web_view);

    action_group = gtk_action_group_new ("selection");
    gtk_action_group_set_translation_domain (action_group, domain);
    gtk_ui_manager_insert_action_group (ui_manager, action_group, 0);
    g_object_unref (action_group);

    gtk_action_group_add_actions (
        action_group, selection_entries,
        G_N_ELEMENTS (selection_entries), web_view);

    action_group = gtk_action_group_new ("standard");
    gtk_action_group_set_translation_domain (action_group, domain);
    gtk_ui_manager_insert_action_group (ui_manager, action_group, 0);
    g_object_unref (action_group);

    gtk_action_group_add_actions (
        action_group, standard_entries,
        G_N_ELEMENTS (standard_entries), web_view);

    popup_action = e_popup_action_new ("open");
    gtk_action_group_add_action (action_group, GTK_ACTION (popup_action));
    g_object_unref (popup_action);

    g_object_bind_property (
        web_view, "open-proxy",
        popup_action, "related-action",
        G_BINDING_BIDIRECTIONAL |
        G_BINDING_SYNC_CREATE);

    /* Support lockdown. */

    action_group = gtk_action_group_new ("lockdown-printing");
    gtk_action_group_set_translation_domain (action_group, domain);
    gtk_ui_manager_insert_action_group (ui_manager, action_group, 0);
    g_object_unref (action_group);

    popup_action = e_popup_action_new ("print");
    gtk_action_group_add_action (action_group, GTK_ACTION (popup_action));
    g_object_unref (popup_action);

    g_object_bind_property (
        web_view, "print-proxy",
        popup_action, "related-action",
        G_BINDING_BIDIRECTIONAL |
        G_BINDING_SYNC_CREATE);

    action_group = gtk_action_group_new ("lockdown-save-to-disk");
    gtk_action_group_set_translation_domain (action_group, domain);
    gtk_ui_manager_insert_action_group (ui_manager, action_group, 0);
    g_object_unref (action_group);

    popup_action = e_popup_action_new ("save-as");
    gtk_action_group_add_action (action_group, GTK_ACTION (popup_action));
    g_object_unref (popup_action);

    g_object_bind_property (
        web_view, "save-as-proxy",
        popup_action, "related-action",
        G_BINDING_BIDIRECTIONAL |
        G_BINDING_SYNC_CREATE);

    /* Because we are loading from a hard-coded string, there is
     * no chance of I/O errors.  Failure here implies a malformed
     * UI definition.  Full stop. */
    gtk_ui_manager_add_ui_from_string (ui_manager, ui, -1, &error);
    if (error != NULL)
        g_error ("%s", error->message);

    id = "org.gnome.evolution.webview";
    e_plugin_ui_register_manager (ui_manager, id, web_view);
    e_plugin_ui_enable_manager (ui_manager, id);
}

GtkWidget *
e_web_view_new (void)
{
    return g_object_new (E_TYPE_WEB_VIEW, NULL);
}

void
e_web_view_clear (EWebView *web_view)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    webkit_web_view_load_uri (WEBKIT_WEB_VIEW (web_view), "about:blank");
}

void
e_web_view_load_string (EWebView *web_view,
                        const gchar *string)
{
    EWebViewClass *class;

    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    class = E_WEB_VIEW_GET_CLASS (web_view);
    g_return_if_fail (class->load_string != NULL);

    class->load_string (web_view, string);
}

void
e_web_view_load_uri (EWebView *web_view,
                     const gchar *uri)
{
    EWebViewClass *class;

    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    class = E_WEB_VIEW_GET_CLASS (web_view);
    g_return_if_fail (class->load_uri != NULL);

    class->load_uri (web_view, uri);
}

void
e_web_view_reload (EWebView *web_view)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    webkit_web_view_reload (WEBKIT_WEB_VIEW (web_view));
}

const gchar *
e_web_view_get_uri (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);

    return webkit_web_view_get_uri (WEBKIT_WEB_VIEW (web_view));
}

void
e_web_view_frame_load_string (EWebView *web_view,
                              const gchar *frame_name,
                              const gchar *string)
{
    EWebViewClass *class;

    g_return_if_fail (E_IS_WEB_VIEW (web_view));
    g_return_if_fail (frame_name != NULL);

    class = E_WEB_VIEW_GET_CLASS (web_view);
    g_return_if_fail (class->frame_load_string != NULL);

    class->frame_load_string (web_view, frame_name, string);
}

void
e_web_view_frame_load_uri (EWebView *web_view,
                           const gchar *frame_name,
                           const gchar *uri)
{
    EWebViewClass *class;

    g_return_if_fail (E_IS_WEB_VIEW (web_view));
    g_return_if_fail (frame_name != NULL);

    class = E_WEB_VIEW_GET_CLASS (web_view);
    g_return_if_fail (class->frame_load_uri != NULL);

    class->frame_load_uri (web_view, frame_name, uri);
}

const gchar *
e_web_view_frame_get_uri (EWebView *web_view,
                          const gchar *frame_name)
{
    WebKitWebFrame *main_frame, *frame;

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);
    g_return_val_if_fail (frame_name != NULL, NULL);

    main_frame = webkit_web_view_get_main_frame (WEBKIT_WEB_VIEW (web_view));
    if (main_frame) {
        frame = webkit_web_frame_find_frame (main_frame, frame_name);

        if (frame)
            return webkit_web_frame_get_uri (frame);
    }

    return NULL;
}

gchar *
e_web_view_get_html (EWebView *web_view)
{
    GValue html = {0};

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);

    if (e_web_view_exec_script (web_view, "return document.documentElement.innerHTML;", &html) == G_TYPE_STRING)
        return g_strdup (g_value_get_string (&html));
    else
        return NULL;
}

JSGlobalContextRef
e_web_view_get_global_context (EWebView *web_view)
{
    WebKitWebFrame *main_frame;

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), 0);

    main_frame = webkit_web_view_get_main_frame (WEBKIT_WEB_VIEW (web_view));
    return webkit_web_frame_get_global_context (main_frame);
}

GType
e_web_view_exec_script (EWebView *web_view,
                        const gchar *script,
                        GValue *value)
{
    WebKitWebFrame *main_frame;

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), G_TYPE_INVALID);
    g_return_val_if_fail (script != NULL, G_TYPE_INVALID);

    main_frame = webkit_web_view_get_main_frame (WEBKIT_WEB_VIEW (web_view));

    return e_web_view_frame_exec_script (web_view,
        webkit_web_frame_get_name (main_frame),
        script, value);
}

GType
e_web_view_frame_exec_script (EWebView *web_view,
                              const gchar *frame_name,
                              const gchar *script,
                              GValue *value)
{
    WebKitWebFrame *main_frame, *frame;
    JSGlobalContextRef context;
    JSValueRef js_value, error = NULL;
    JSType js_type;
    JSStringRef js_script;
    JSStringRef js_str;
    size_t str_len;
    gchar *str;

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), G_TYPE_INVALID);
    g_return_val_if_fail (script != NULL, G_TYPE_INVALID);

    main_frame = webkit_web_view_get_main_frame (WEBKIT_WEB_VIEW (web_view));
    frame = webkit_web_frame_find_frame (main_frame, frame_name);

    context = webkit_web_frame_get_global_context (frame);

    js_script = JSStringCreateWithUTF8CString (script);
    js_value = JSEvaluateScript (context, js_script, NULL, NULL, 0, &error);
    JSStringRelease (js_script);

    if (error) {
        gchar *msg;
        js_str = JSValueToStringCopy (context, error, NULL);
        str_len = JSStringGetLength (js_str);

        msg = g_malloc (str_len + 1);
        JSStringGetUTF8CString (js_str, msg, str_len + 1);
        JSStringRelease (js_str);

        g_message ("JavaScript Execution Failed: %s", msg);
        g_free (msg);

        return G_TYPE_INVALID;
    }

    if (!value)
        return G_TYPE_NONE;

    js_type = JSValueGetType (context, js_value);
    switch (js_type) {
        case kJSTypeBoolean:
            g_value_init (value, G_TYPE_BOOLEAN);
            g_value_set_boolean (value, JSValueToBoolean (context, js_value));
            break;
        case kJSTypeNumber:
            g_value_init (value, G_TYPE_DOUBLE);
            g_value_set_double (value, JSValueToNumber (context, js_value, NULL));
            break;
        case kJSTypeString:
            js_str = JSValueToStringCopy (context, js_value, NULL);
            str_len = JSStringGetLength (js_str);
            str = g_malloc (str_len + 1);
            JSStringGetUTF8CString (js_str, str, str_len + 1);
            JSStringRelease (js_str);
            g_value_init (value, G_TYPE_STRING);
            g_value_set_string (value, str);
            g_free (str);
            break;
        case kJSTypeObject:
            g_value_init (value, G_TYPE_OBJECT);
            g_value_set_object (value, JSValueToObject (context, js_value, NULL));
            break;
        case kJSTypeNull:
            g_value_init (value, G_TYPE_POINTER);
            g_value_set_pointer (value, NULL);
            break;
        case kJSTypeUndefined:
            break;
    }

    return G_VALUE_TYPE (value);
}

static JSValueRef
web_view_handle_js_callback (JSContextRef ctx,
                             JSObjectRef function,
                             JSObjectRef this_object,
                             size_t argument_count,
                             const JSValueRef arguments[],
                             JSValueRef *exception)
{
    gpointer web_view;
    gpointer user_data;
    gchar *fnc_name;
    size_t fnc_name_len;

    EWebViewJSFunctionCallback callback;

    JSStringRef js_webview_prop = JSStringCreateWithUTF8CString ("webview");
    JSStringRef js_userdata_prop = JSStringCreateWithUTF8CString ("user-data");
    JSStringRef js_fncname_prop = JSStringCreateWithUTF8CString ("fnc-name");
    JSStringRef js_fncname_str;

    JSValueRef js_webview = JSObjectGetProperty (ctx, function, js_webview_prop, NULL);
    JSValueRef js_userdata = JSObjectGetProperty (ctx, function, js_userdata_prop, NULL);
    JSValueRef js_fncname = JSObjectGetProperty (ctx, function, js_fncname_prop, NULL);

    web_view = GINT_TO_POINTER ((gint) JSValueToNumber (ctx, js_webview, NULL));
    user_data = GINT_TO_POINTER ((gint) JSValueToNumber (ctx, js_userdata, NULL));
    js_fncname_str = JSValueToStringCopy (ctx, js_fncname, NULL);
    fnc_name_len = JSStringGetLength (js_fncname_str);

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), 0);

    /* Convert fncname to gchar* and lookup the callback in hashtable */
    fnc_name = g_malloc (fnc_name_len + 1);
    JSStringGetUTF8CString (js_fncname_str, fnc_name, fnc_name_len + 1);
    callback = g_hash_table_lookup (E_WEB_VIEW (web_view)->priv->js_callbacks, fnc_name);

    g_return_val_if_fail (callback != NULL, 0);

    /* Call the callback function */
    callback (E_WEB_VIEW (web_view), argument_count, arguments, user_data);

    JSStringRelease (js_fncname_str);
    JSStringRelease (js_fncname_prop);
    JSStringRelease (js_webview_prop);
    JSStringRelease (js_userdata_prop);

    g_free (fnc_name);

    return 0;
}

void
e_web_view_install_js_callback (EWebView *web_view,
                                const gchar *fnc_name,
                                EWebViewJSFunctionCallback callback,
                                gpointer user_data)
{
    WebKitWebFrame *frame;
    JSGlobalContextRef ctx;
    JSObjectRef global_obj, js_func;
    JSStringRef js_fnc_name, js_webview_prop, js_userdata_prop, js_fncname_prop;

    g_return_if_fail (E_IS_WEB_VIEW (web_view));
    g_return_if_fail (fnc_name != NULL);
    g_return_if_fail (callback != NULL);

    frame = webkit_web_view_get_main_frame (WEBKIT_WEB_VIEW (web_view));
    ctx = webkit_web_frame_get_global_context (frame);
    global_obj = JSContextGetGlobalObject (ctx);
    js_fnc_name = JSStringCreateWithUTF8CString (fnc_name);
    js_func = JSObjectMakeFunctionWithCallback (ctx, NULL,
        (JSObjectCallAsFunctionCallback) web_view_handle_js_callback);
    js_webview_prop = JSStringCreateWithUTF8CString ("webview");
    js_userdata_prop = JSStringCreateWithUTF8CString ("user-data");
    js_fncname_prop = JSStringCreateWithUTF8CString ("fnc-name");

    /* Set some properties to the function */
    JSObjectSetProperty (ctx, js_func, js_webview_prop, JSValueMakeNumber (ctx, GPOINTER_TO_INT (web_view)), 0, NULL);
    JSObjectSetProperty (ctx, js_func, js_userdata_prop, JSValueMakeNumber (ctx, GPOINTER_TO_INT (user_data)), 0, NULL);
    JSObjectSetProperty (ctx, js_func, js_fncname_prop, JSValueMakeString (ctx, js_fnc_name), 0, NULL);

    /* Set the function as a property of global object */
    JSObjectSetProperty (ctx, global_obj, js_fnc_name, js_func, 0, NULL);

    JSStringRelease (js_fncname_prop);
    JSStringRelease (js_userdata_prop);
    JSStringRelease (js_webview_prop);
    JSStringRelease (js_fnc_name);

    g_hash_table_insert (web_view->priv->js_callbacks, g_strdup (fnc_name), callback);
}

gboolean
e_web_view_get_caret_mode (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    return web_view->priv->caret_mode;
}

void
e_web_view_set_caret_mode (EWebView *web_view,
                           gboolean caret_mode)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    if ((web_view->priv->caret_mode ? 1 : 0) == (caret_mode ? 1 : 0))
        return;

    web_view->priv->caret_mode = caret_mode;

    g_object_notify (G_OBJECT (web_view), "caret-mode");
}

GtkTargetList *
e_web_view_get_copy_target_list (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);

    return webkit_web_view_get_copy_target_list (
        WEBKIT_WEB_VIEW (web_view));
}

gboolean
e_web_view_get_disable_printing (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    return web_view->priv->disable_printing;
}

void
e_web_view_set_disable_printing (EWebView *web_view,
                                 gboolean disable_printing)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    if ((web_view->priv->disable_printing ? 1 : 0) == (disable_printing ? 1 : 0))
        return;

    web_view->priv->disable_printing = disable_printing;

    g_object_notify (G_OBJECT (web_view), "disable-printing");
}

gboolean
e_web_view_get_disable_save_to_disk (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    return web_view->priv->disable_save_to_disk;
}

void
e_web_view_set_disable_save_to_disk (EWebView *web_view,
                                     gboolean disable_save_to_disk)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    if ((web_view->priv->disable_save_to_disk ? 1 : 0) == (disable_save_to_disk ? 1 : 0))
        return;

    web_view->priv->disable_save_to_disk = disable_save_to_disk;

    g_object_notify (G_OBJECT (web_view), "disable-save-to-disk");
}

gboolean
e_web_view_get_enable_frame_flattening (EWebView *web_view)
{
    WebKitWebSettings *settings;
    gboolean flattening;

        /* Return TRUE with fail since it's default value we set in _init(). */
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), TRUE);

    settings = webkit_web_view_get_settings (WEBKIT_WEB_VIEW (web_view));
    g_return_val_if_fail (settings != NULL, TRUE);

    g_object_get (G_OBJECT (settings), "enable-frame-flattening", &flattening, NULL);

    return flattening;
}

void
e_web_view_set_enable_frame_flattening (EWebView *web_view,
                                        gboolean enable_frame_flattening)
{
    WebKitWebSettings *settings;

    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    settings = webkit_web_view_get_settings (WEBKIT_WEB_VIEW (web_view));
    g_return_if_fail (settings != NULL);

    g_object_set (G_OBJECT (settings), "enable-frame-flattening",
        enable_frame_flattening, NULL);
}

gboolean
e_web_view_get_editable (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    return webkit_web_view_get_editable (WEBKIT_WEB_VIEW (web_view));
}

void
e_web_view_set_editable (EWebView *web_view,
                         gboolean editable)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    webkit_web_view_set_editable (WEBKIT_WEB_VIEW (web_view), editable);
}

gboolean
e_web_view_get_inline_spelling (EWebView *web_view)
{
#if 0  /* WEBKIT - XXX No equivalent property? */
    /* XXX This is just here to maintain symmetry
     *     with e_web_view_set_inline_spelling(). */

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    return gtk_html_get_inline_spelling (GTK_HTML (web_view));
#endif

    return FALSE;
}

void
e_web_view_set_inline_spelling (EWebView *web_view,
                                gboolean inline_spelling)
{
#if 0  /* WEBKIT - XXX No equivalent property? */
    /* XXX GtkHTML does not utilize GObject properties as well
     *     as it could.  This just wraps gtk_html_set_inline_spelling()
     *     so we get a "notify::inline-spelling" signal. */

    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    gtk_html_set_inline_spelling (GTK_HTML (web_view), inline_spelling);

    g_object_notify (G_OBJECT (web_view), "inline-spelling");
#endif
}

gboolean
e_web_view_get_magic_links (EWebView *web_view)
{
#if 0  /* WEBKIT - XXX No equivalent property? */
    /* XXX This is just here to maintain symmetry
     *     with e_web_view_set_magic_links(). */

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    return gtk_html_get_magic_links (GTK_HTML (web_view));
#endif

    return FALSE;
}

void
e_web_view_set_magic_links (EWebView *web_view,
                            gboolean magic_links)
{
#if 0  /* WEBKIT - XXX No equivalent property? */
    /* XXX GtkHTML does not utilize GObject properties as well
     *     as it could.  This just wraps gtk_html_set_magic_links()
     *     so we can get a "notify::magic-links" signal. */

    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    gtk_html_set_magic_links (GTK_HTML (web_view), magic_links);

    g_object_notify (G_OBJECT (web_view), "magic-links");
#endif
}

gboolean
e_web_view_get_magic_smileys (EWebView *web_view)
{
#if 0  /* WEBKIT - No equivalent property? */
    /* XXX This is just here to maintain symmetry
     *     with e_web_view_set_magic_smileys(). */

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    return gtk_html_get_magic_smileys (GTK_HTML (web_view));
#endif

    return FALSE;
}

void
e_web_view_set_magic_smileys (EWebView *web_view,
                              gboolean magic_smileys)
{
#if 0  /* WEBKIT - No equivalent property? */
    /* XXX GtkHTML does not utilize GObject properties as well
     *     as it could.  This just wraps gtk_html_set_magic_smileys()
     *     so we can get a "notify::magic-smileys" signal. */

    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    gtk_html_set_magic_smileys (GTK_HTML (web_view), magic_smileys);

    g_object_notify (G_OBJECT (web_view), "magic-smileys");
#endif
}

const gchar *
e_web_view_get_selected_uri (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);

    return web_view->priv->selected_uri;
}

void
e_web_view_set_selected_uri (EWebView *web_view,
                             const gchar *selected_uri)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    if (g_strcmp0 (web_view->priv->selected_uri, selected_uri) == 0)
        return;

    g_free (web_view->priv->selected_uri);
    web_view->priv->selected_uri = g_strdup (selected_uri);

    g_object_notify (G_OBJECT (web_view), "selected-uri");
}

GdkPixbufAnimation *
e_web_view_get_cursor_image (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);

    return web_view->priv->cursor_image;
}

void
e_web_view_set_cursor_image (EWebView *web_view,
                             GdkPixbufAnimation *image)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    if (web_view->priv->cursor_image == image)
        return;

    if (image != NULL)
        g_object_ref (image);

    if (web_view->priv->cursor_image != NULL)
        g_object_unref (web_view->priv->cursor_image);

    web_view->priv->cursor_image = image;

    g_object_notify (G_OBJECT (web_view), "cursor-image");
}

const gchar *
e_web_view_get_cursor_image_src (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);

    return web_view->priv->cursor_image_src;
}

void
e_web_view_set_cursor_image_src (EWebView *web_view,
                                 const gchar *src_uri)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    if (g_strcmp0 (web_view->priv->cursor_image_src, src_uri) == 0)
        return;

    g_free (web_view->priv->cursor_image_src);
    web_view->priv->cursor_image_src = g_strdup (src_uri);

    g_object_notify (G_OBJECT (web_view), "cursor-image-src");
}

GtkAction *
e_web_view_get_open_proxy (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    return web_view->priv->open_proxy;
}

void
e_web_view_set_open_proxy (EWebView *web_view,
                           GtkAction *open_proxy)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    if (web_view->priv->open_proxy == open_proxy)
        return;

    if (open_proxy != NULL) {
        g_return_if_fail (GTK_IS_ACTION (open_proxy));
        g_object_ref (open_proxy);
    }

    if (web_view->priv->open_proxy != NULL)
        g_object_unref (web_view->priv->open_proxy);

    web_view->priv->open_proxy = open_proxy;

    g_object_notify (G_OBJECT (web_view), "open-proxy");
}

GtkTargetList *
e_web_view_get_paste_target_list (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);

    return webkit_web_view_get_paste_target_list (
        WEBKIT_WEB_VIEW (web_view));
}

GtkAction *
e_web_view_get_print_proxy (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    return web_view->priv->print_proxy;
}

void
e_web_view_set_print_proxy (EWebView *web_view,
                            GtkAction *print_proxy)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    if (web_view->priv->print_proxy == print_proxy)
        return;

    if (print_proxy != NULL) {
        g_return_if_fail (GTK_IS_ACTION (print_proxy));
        g_object_ref (print_proxy);
    }

    if (web_view->priv->print_proxy != NULL)
        g_object_unref (web_view->priv->print_proxy);

    web_view->priv->print_proxy = print_proxy;

    g_object_notify (G_OBJECT (web_view), "print-proxy");
}

GtkAction *
e_web_view_get_save_as_proxy (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    return web_view->priv->save_as_proxy;
}

void
e_web_view_set_save_as_proxy (EWebView *web_view,
                              GtkAction *save_as_proxy)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    if (web_view->priv->save_as_proxy == save_as_proxy)
        return;

    if (save_as_proxy != NULL) {
        g_return_if_fail (GTK_IS_ACTION (save_as_proxy));
        g_object_ref (save_as_proxy);
    }

    if (web_view->priv->save_as_proxy != NULL)
        g_object_unref (web_view->priv->save_as_proxy);

    web_view->priv->save_as_proxy = save_as_proxy;

    g_object_notify (G_OBJECT (web_view), "save-as-proxy");
}

GSList *
e_web_view_get_highlights (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);

    return web_view->priv->highlights;
}

void
e_web_view_add_highlight (EWebView *web_view,
                          const gchar *highlight)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));
    g_return_if_fail (highlight && *highlight);

    web_view->priv->highlights =
        g_slist_append (web_view->priv->highlights, g_strdup (highlight));

    web_view_update_document_highlights (web_view);
}

void e_web_view_clear_highlights (EWebView *web_view)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    if (!web_view->priv->highlights)
        return;

    g_slist_free_full (web_view->priv->highlights, g_free);
    web_view->priv->highlights = NULL;

    web_view_update_document_highlights (web_view);
}

GtkAction *
e_web_view_get_action (EWebView *web_view,
                       const gchar *action_name)
{
    GtkUIManager *ui_manager;

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);
    g_return_val_if_fail (action_name != NULL, NULL);

    ui_manager = e_web_view_get_ui_manager (web_view);

    return e_lookup_action (ui_manager, action_name);
}

GtkActionGroup *
e_web_view_get_action_group (EWebView *web_view,
                             const gchar *group_name)
{
    GtkUIManager *ui_manager;

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);
    g_return_val_if_fail (group_name != NULL, NULL);

    ui_manager = e_web_view_get_ui_manager (web_view);

    return e_lookup_action_group (ui_manager, group_name);
}

gchar *
e_web_view_extract_uri (EWebView *web_view,
                        GdkEventButton *event)
{
    EWebViewClass *class;

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);

    class = E_WEB_VIEW_GET_CLASS (web_view);
    g_return_val_if_fail (class->extract_uri != NULL, NULL);

    return class->extract_uri (web_view, event);
}

void
e_web_view_copy_clipboard (EWebView *web_view)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    webkit_web_view_copy_clipboard (WEBKIT_WEB_VIEW (web_view));
}

void
e_web_view_cut_clipboard (EWebView *web_view)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    webkit_web_view_cut_clipboard (WEBKIT_WEB_VIEW (web_view));
}

gboolean
e_web_view_is_selection_active (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    return webkit_web_view_has_selection (WEBKIT_WEB_VIEW (web_view));
}

void
e_web_view_paste_clipboard (EWebView *web_view)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    webkit_web_view_paste_clipboard (WEBKIT_WEB_VIEW (web_view));
}

gboolean
e_web_view_scroll_forward (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    webkit_web_view_move_cursor (
        WEBKIT_WEB_VIEW (web_view), GTK_MOVEMENT_PAGES, 1);

    return TRUE;  /* XXX This means nothing. */
}

gboolean
e_web_view_scroll_backward (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    webkit_web_view_move_cursor (
        WEBKIT_WEB_VIEW (web_view), GTK_MOVEMENT_PAGES, -1);

    return TRUE;  /* XXX This means nothing. */
}

void
e_web_view_select_all (EWebView *web_view)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    webkit_web_view_select_all (WEBKIT_WEB_VIEW (web_view));
}

void
e_web_view_unselect_all (EWebView *web_view)
{
#if 0  /* WEBKIT */
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    gtk_html_command (GTK_HTML (web_view), "unselect-all");
#endif
}

void
e_web_view_zoom_100 (EWebView *web_view)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    webkit_web_view_set_zoom_level (WEBKIT_WEB_VIEW (web_view), 1.0);
}

void
e_web_view_zoom_in (EWebView *web_view)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    webkit_web_view_zoom_in (WEBKIT_WEB_VIEW (web_view));
}

void
e_web_view_zoom_out (EWebView *web_view)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    webkit_web_view_zoom_out (WEBKIT_WEB_VIEW (web_view));
}

GtkUIManager *
e_web_view_get_ui_manager (EWebView *web_view)
{
    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);

    return web_view->priv->ui_manager;
}

GtkWidget *
e_web_view_get_popup_menu (EWebView *web_view)
{
    GtkUIManager *ui_manager;
    GtkWidget *menu;

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);

    ui_manager = e_web_view_get_ui_manager (web_view);
    menu = gtk_ui_manager_get_widget (ui_manager, "/context");
    g_return_val_if_fail (GTK_IS_MENU (menu), NULL);

    return menu;
}

void
e_web_view_show_popup_menu (EWebView *web_view,
                            GdkEventButton *event,
                            GtkMenuPositionFunc func,
                            gpointer user_data)
{
    GtkWidget *menu;

    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    e_web_view_update_actions (web_view, event);

    menu = e_web_view_get_popup_menu (web_view);

    if (event != NULL)
        gtk_menu_popup (
            GTK_MENU (menu), NULL, NULL, func,
            user_data, event->button, event->time);
    else
        gtk_menu_popup (
            GTK_MENU (menu), NULL, NULL, func,
            user_data, 0, gtk_get_current_event_time ());
}

void
e_web_view_status_message (EWebView *web_view,
                           const gchar *status_message)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    g_signal_emit (web_view, signals[STATUS_MESSAGE], 0, status_message);
}

void
e_web_view_stop_loading (EWebView *web_view)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    g_signal_emit (web_view, signals[STOP_LOADING], 0);
}

void
e_web_view_update_actions (EWebView *web_view,
                           GdkEventButton *event)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    g_signal_emit (web_view, signals[UPDATE_ACTIONS], 0, event);
}

gchar *
e_web_view_get_selection_html (EWebView *web_view)
{
    WebKitDOMDocument *document;
    WebKitDOMDOMWindow *window;
    WebKitDOMDOMSelection *selection;
    WebKitDOMRange *range;
    WebKitDOMDocumentFragment *fragment;
    WebKitDOMHTMLElement *element;

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);

    if (!webkit_web_view_has_selection (WEBKIT_WEB_VIEW (web_view)))
        return NULL;

    document = webkit_web_view_get_dom_document (WEBKIT_WEB_VIEW (web_view));
    window = webkit_dom_document_get_default_view (document);
    selection = webkit_dom_dom_window_get_selection (window);
    if (!selection)
        return NULL;

    range = webkit_dom_dom_selection_get_range_at (selection, 0, NULL);
    if (!range)
        return NULL;

    fragment = webkit_dom_range_clone_contents (range, NULL);
    if (!fragment)
        return NULL;

    element = WEBKIT_DOM_HTML_ELEMENT (webkit_dom_document_create_element (document, "div", NULL));
    webkit_dom_node_append_child (WEBKIT_DOM_NODE (element),
        WEBKIT_DOM_NODE (fragment), NULL);

    return webkit_dom_html_element_get_inner_html (element);
}

void
e_web_view_set_settings (EWebView *web_view,
                         WebKitWebSettings *settings)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    if (settings == webkit_web_view_get_settings (WEBKIT_WEB_VIEW (web_view)))
        return;

    g_object_bind_property (settings, "enable-caret-browsing", web_view, "caret-mode",
        G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);

    webkit_web_view_set_settings (WEBKIT_WEB_VIEW (web_view), settings);
}

WebKitWebSettings *
e_web_view_get_default_settings (void)
{
    WebKitWebSettings *settings;

    settings = webkit_web_settings_new ();

    g_object_set (G_OBJECT (settings),
        "enable-frame-flattening", TRUE, 
        "enable-java-applet", FALSE,
        "enable-html5-database", FALSE,
        "enable-html5-local-storage", FALSE,
        "enable-offline-web-application-cache", FALSE,
        "enable-site-specific-quirks", TRUE,
        "enable-scripts", FALSE,
        NULL);

    return settings;
}

void
e_web_view_update_fonts (EWebView *web_view)
{
    GString *stylesheet;
    gchar *base64;
    gchar *aa = NULL;
    WebKitWebSettings *settings;
    PangoFontDescription *min_size, *ms, *vw;
    const gchar *styles[] = { "normal", "oblique", "italic" };
    const gchar *smoothing = NULL;
    GtkStyleContext *context;
    GdkColor *link = NULL;
    GdkColor *visited = NULL;

    ms = NULL;
    vw = NULL;

    if (E_WEB_VIEW_GET_CLASS (web_view)->set_fonts)
        E_WEB_VIEW_GET_CLASS (web_view)->set_fonts (web_view, &ms, &vw);

    if (ms == NULL) {
        gchar *font;

        font = g_settings_get_string (
                web_view->priv->font_settings,
                "monospace-font-name");

        ms = pango_font_description_from_string (
                font ? font : "monospace 10");

        g_free (font);
    }

    if (vw == NULL) {
        gchar *font;

        font = g_settings_get_string (
                web_view->priv->font_settings,
                "font-name");

        vw = pango_font_description_from_string (
                font ? font : "serif 10");

        g_free (font);
    }

    if (pango_font_description_get_size (ms) < pango_font_description_get_size (vw)) {
        min_size = ms;
    } else {
        min_size = vw;
    }

    stylesheet = g_string_new ("");
    g_string_append_printf (stylesheet,
        "body {\n"
        "  font-family: '%s';\n"
        "  font-size: %dpt;\n"
        "  font-weight: %d;\n"
        "  font-style: %s;\n",
        pango_font_description_get_family (vw),
        pango_font_description_get_size (vw) / PANGO_SCALE,
        pango_font_description_get_weight (vw),
        styles[pango_font_description_get_style (vw)]);

    if (web_view->priv->aliasing_settings != NULL)
        aa = g_settings_get_string (
            web_view->priv->aliasing_settings, "antialiasing");

    if (g_strcmp0 (aa, "none") == 0)
        smoothing = "none";
    else if (g_strcmp0 (aa, "grayscale") == 0)
        smoothing = "antialiased";
    else if (g_strcmp0 (aa, "rgba") == 0)
        smoothing = "subpixel-antialiased";

    if (smoothing != NULL)
        g_string_append_printf (
            stylesheet,
            " -webkit-font-smoothing: %s;\n",
            smoothing);

    g_free (aa);

    g_string_append (stylesheet, "}\n");

    g_string_append_printf (stylesheet,
        "pre,code,.pre {\n"
        "  font-family: '%s';\n"
        "  font-size: %dpt;\n"
        "  font-weight: %d;\n"
        "  font-style: %s;\n"
        "}",
        pango_font_description_get_family (ms),
        pango_font_description_get_size (ms) / PANGO_SCALE,
        pango_font_description_get_weight (ms),
        styles[pango_font_description_get_style (ms)]);

    context = gtk_widget_get_style_context (GTK_WIDGET (web_view));
    gtk_style_context_get_style (context,
        "link-color", &link,
        "visited-link-color", &visited,
        NULL);

    if (link == NULL) {
        link = g_slice_new0 (GdkColor);
        link->blue = G_MAXINT16;
    }

    if (visited == NULL) {
        visited = g_slice_new0 (GdkColor);
        visited->red = G_MAXINT16;
    }

    g_string_append_printf (stylesheet,
        "a {\n"
        "  color: #%06x;\n"
        "}\n"
        "a:visited {\n"
        "  color: #%06x;\n"
        "}\n",
        e_color_to_value (link),
        e_color_to_value (visited));

    gdk_color_free (link);
    gdk_color_free (visited);

    base64 = g_base64_encode ((guchar *) stylesheet->str, stylesheet->len);
    g_string_free (stylesheet, TRUE);

    stylesheet = g_string_new ("data:text/css;charset=utf-8;base64,");
    g_string_append (stylesheet, base64);
    g_free (base64);

    settings = webkit_web_view_get_settings (WEBKIT_WEB_VIEW (web_view));
    g_object_set (G_OBJECT (settings),
        "default-font-size", pango_font_description_get_size (vw) / PANGO_SCALE,
        "default-font-family", pango_font_description_get_family (vw),
        "monospace-font-family", pango_font_description_get_family (ms),
        "default-monospace-font-size", (pango_font_description_get_size (ms) / PANGO_SCALE),
        "minimum-font-size", (pango_font_description_get_size (min_size) / PANGO_SCALE),
        "user-stylesheet-uri", stylesheet->str,
        NULL);

    g_string_free (stylesheet, TRUE);

    pango_font_description_free (ms);
    pango_font_description_free (vw);
}

void
e_web_view_install_request_handler (EWebView *web_view,
                                    GType handler_type)
{
    SoupSession *session;
    SoupSessionFeature *feature;
    gboolean new;

    session = webkit_get_default_session ();

    feature = soup_session_get_feature (session, SOUP_TYPE_REQUESTER);
    new = FALSE;
    if (feature == NULL) {
        feature = SOUP_SESSION_FEATURE (soup_requester_new ());
        soup_session_add_feature (session, feature);
        new = TRUE;
    }

    soup_session_feature_add_feature (feature, handler_type);

    if (new) {
        g_object_unref (feature);
    }
}