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

#include <camel/camel.h>

#include <e-util/e-util.h>
#include <e-util/e-alert-dialog.h>
#include <e-util/e-alert-sink.h>
#include <e-util/e-extensible.h>
#include <e-util/e-plugin-ui.h>

#include "e-popup-action.h"
#include "e-selectable.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;

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

    GtkTargetList *copy_target_list;
    GtkTargetList *paste_target_list;

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

struct _EWebViewRequest {
    GFile *file;
    EWebView *web_view;
    GCancellable *cancellable;
    GInputStream *input_stream;
    GtkHTMLStream *output_stream;
    gchar buffer[4096];
};

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

enum {
    COPY_CLIPBOARD,
    CUT_CLIPBOARD,
    PASTE_CLIPBOARD,
    POPUP_EVENT,
    STATUS_MESSAGE,
    STOP_LOADING,
    UPDATE_ACTIONS,
    PROCESS_MAILTO,
    LAST_SIGNAL
};

static gpointer parent_class;
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'/>"
"  </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,
    GTK_TYPE_HTML,
    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 EWebViewRequest *
web_view_request_new (EWebView *web_view,
                      const gchar *uri,
                      GtkHTMLStream *stream)
{
    EWebViewRequest *request;
    GList *list;

    request = g_slice_new (EWebViewRequest);

    /* Try to detect file paths posing as URIs. */
    if (*uri == '/')
        request->file = g_file_new_for_path (uri);
    else
        request->file = g_file_new_for_uri (uri);

    request->web_view = g_object_ref (web_view);
    request->cancellable = g_cancellable_new ();
    request->input_stream = NULL;
    request->output_stream = stream;

    list = request->web_view->priv->requests;
    list = g_list_prepend (list, request);
    request->web_view->priv->requests = list;

    return request;
}

static void
web_view_request_free (EWebViewRequest *request)
{
    GList *list;

    list = request->web_view->priv->requests;
    list = g_list_remove (list, request);
    request->web_view->priv->requests = list;

    g_object_unref (request->file);
    g_object_unref (request->web_view);
    g_object_unref (request->cancellable);

    if (request->input_stream != NULL)
        g_object_unref (request->input_stream);

    g_slice_free (EWebViewRequest, request);
}

static void
web_view_request_cancel (EWebViewRequest *request)
{
    g_cancellable_cancel (request->cancellable);
}

static gboolean
web_view_request_check_for_error (EWebViewRequest *request,
                                  GError *error)
{
    GtkHTML *html;
    GtkHTMLStream *stream;

    if (error == NULL)
        return FALSE;

    if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED)) {
        /* use this error, but do not close the stream */
        g_error_free (error);
        return TRUE;
    }

    /* XXX Should we log errors that are not cancellations? */

    html = GTK_HTML (request->web_view);
    stream = request->output_stream;

    gtk_html_end (html, stream, GTK_HTML_STREAM_ERROR);
    web_view_request_free (request);
    g_error_free (error);

    return TRUE;
}

static void
web_view_request_stream_read_cb (GInputStream *input_stream,
                                 GAsyncResult *result,
                                 EWebViewRequest *request)
{
    gssize bytes_read;
    GError *error = NULL;

    bytes_read = g_input_stream_read_finish (input_stream, result, &error);

    if (web_view_request_check_for_error (request, error))
        return;

    if (bytes_read == 0) {
        gtk_html_end (
            GTK_HTML (request->web_view),
            request->output_stream, GTK_HTML_STREAM_OK);
        web_view_request_free (request);
        return;
    }

    gtk_html_write (
        GTK_HTML (request->web_view),
        request->output_stream, request->buffer, bytes_read);

    g_input_stream_read_async (
        request->input_stream, request->buffer,
        sizeof (request->buffer), G_PRIORITY_DEFAULT,
        request->cancellable, (GAsyncReadyCallback)
        web_view_request_stream_read_cb, request);
}

static void
web_view_request_read_cb (GFile *file,
                          GAsyncResult *result,
                          EWebViewRequest *request)
{
    GFileInputStream *input_stream;
    GError *error = NULL;

    /* Input stream might be NULL, so don't use cast macro. */
    input_stream = g_file_read_finish (file, result, &error);
    request->input_stream = (GInputStream *) input_stream;

    if (web_view_request_check_for_error (request, error))
        return;

    g_input_stream_read_async (
        request->input_stream, request->buffer,
        sizeof (request->buffer), G_PRIORITY_DEFAULT,
        request->cancellable, (GAsyncReadyCallback)
        web_view_request_stream_read_cb, request);
}

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 gboolean
web_view_button_press_event_cb (EWebView *web_view,
                                GdkEventButton *event,
                                GtkHTML *frame)
{
    gboolean event_handled = FALSE;
    gchar *uri = NULL;

    if (event) {
        GdkPixbufAnimation *anim;
        gchar *image_src;

        if (frame == NULL)
            frame = GTK_HTML (web_view);

        anim = gtk_html_get_image_at (frame, event->x, event->y);
        e_web_view_set_cursor_image (web_view, anim);
        if (anim != NULL)
            g_object_unref (anim);

        image_src = gtk_html_get_image_src_at (
            frame, event->x, event->y);
        e_web_view_set_cursor_image_src (web_view, image_src);
        g_free (image_src);
    }

    if (event != NULL && event->button != 3)
        return FALSE;

    /* Only extract a URI if no selection is active.  Selected text
     * implies the user is more likely to want to copy the selection
     * to the clipboard than open a link within the selection. */
    if (!e_web_view_is_selection_active (web_view))
        uri = e_web_view_extract_uri (web_view, event, frame);

    if (uri != NULL && g_str_has_prefix (uri, "##")) {
        g_free (uri);
        return FALSE;
    }

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

    g_free (uri);

    return event_handled;
}

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

        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_EDITABLE:
            e_web_view_set_editable (
                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_ANIMATE:
            g_value_set_boolean (
                value, e_web_view_get_animate (
                E_WEB_VIEW (object)));
            return;

        case PROP_CARET_MODE:
            g_value_set_boolean (
                value, e_web_view_get_caret_mode (
                E_WEB_VIEW (object)));
            return;

        case PROP_COPY_TARGET_LIST:
            g_value_set_boxed (
                value, e_web_view_get_copy_target_list (
                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_EDITABLE:
            g_value_set_boolean (
                value, e_web_view_get_editable (
                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_PASTE_TARGET_LIST:
            g_value_set_boxed (
                value, e_web_view_get_paste_target_list (
                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->copy_target_list != NULL) {
        gtk_target_list_unref (priv->copy_target_list);
        priv->copy_target_list = NULL;
    }

    if (priv->paste_target_list != NULL) {
        gtk_target_list_unref (priv->paste_target_list);
        priv->paste_target_list = 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;
    }

    /* Chain up to parent's dispose() method. */
    G_OBJECT_CLASS (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 (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

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

static gboolean
web_view_button_press_event (GtkWidget *widget,
                             GdkEventButton *event)
{
    GtkWidgetClass *widget_class;
    EWebView *web_view;

    web_view = E_WEB_VIEW (widget);

    if (web_view_button_press_event_cb (web_view, event, NULL))
        return TRUE;

    /* Chain up to parent's button_press_event() method. */
    widget_class = GTK_WIDGET_CLASS (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) {
        switch (event->direction) {
            case GDK_SCROLL_UP:
                gtk_html_zoom_in (GTK_HTML (widget));
                return TRUE;
            case GDK_SCROLL_DOWN:
                gtk_html_zoom_out (GTK_HTML (widget));
                return TRUE;
            default:
                break;
        }
    }

    return FALSE;
}

static void
web_view_url_requested (GtkHTML *html,
                        const gchar *uri,
                        GtkHTMLStream *stream)
{
    EWebViewRequest *request;

    request = web_view_request_new (E_WEB_VIEW (html), uri, stream);

    g_file_read_async (
        request->file, G_PRIORITY_DEFAULT,
        request->cancellable, (GAsyncReadyCallback)
        web_view_request_read_cb, request);
}

static void
web_view_gtkhtml_link_clicked (GtkHTML *html,
                               const gchar *uri)
{
    EWebViewClass *class;
    EWebView *web_view;

    web_view = E_WEB_VIEW (html);

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

    class->link_clicked (web_view, uri);
}

static void
web_view_on_url (GtkHTML *html,
                 const gchar *uri)
{
    EWebViewClass *class;
    EWebView *web_view;

    web_view = E_WEB_VIEW (html);

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

    /* XXX WebKit would supply a title here. */
    class->hovering_over_link (web_view, NULL, uri);
}

static void
web_view_iframe_created (GtkHTML *html,
                         GtkHTML *iframe)
{
    g_signal_connect_swapped (
        iframe, "button-press-event",
        G_CALLBACK (web_view_button_press_event_cb), html);
}

static gchar *
web_view_extract_uri (EWebView *web_view,
                      GdkEventButton *event,
                      GtkHTML *html)
{
    gchar *uri;

    if (event != NULL)
        uri = gtk_html_get_url_at (html, event->x, event->y);
    else
        uri = gtk_html_get_cursor_url (html);

    return uri;
}

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;

    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 != '\0')
        gtk_html_load_from_string (GTK_HTML (web_view), string, -1);
    else
        e_web_view_clear (web_view);
}

static void
web_view_copy_clipboard (EWebView *web_view)
{
    gtk_html_command (GTK_HTML (web_view), "copy");
}

static void
web_view_cut_clipboard (EWebView *web_view)
{
    if (e_web_view_get_editable (web_view))
        gtk_html_command (GTK_HTML (web_view), "cut");
}

static void
web_view_paste_clipboard (EWebView *web_view)
{
    if (e_web_view_get_editable (web_view))
        gtk_html_command (GTK_HTML (web_view), "paste");
}

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)
{
    g_list_foreach (
        web_view->priv->requests, (GFunc)
        web_view_request_cancel, NULL);

    gtk_html_stop (GTK_HTML (web_view));
}

static void
web_view_update_actions (EWebView *web_view)
{
    GtkActionGroup *action_group;
    gboolean have_selection;
    gboolean scheme_is_http = FALSE;
    gboolean scheme_is_mailto = FALSE;
    gboolean uri_is_valid = FALSE;
    gboolean has_cursor_image;
    gboolean visible;
    const gchar *group_name;
    const gchar *uri;

    uri = e_web_view_get_selected_uri (web_view);
    have_selection = e_web_view_is_selection_active (web_view);
    has_cursor_image = e_web_view_get_cursor_image (web_view) != NULL;

    /* 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 = have_selection;
    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)
{
    GtkIconInfo *icon_info;
    EWebView *web_view;
    GtkWidget *dialog;
    GString *buffer;
    const gchar *icon_name = NULL;
    const gchar *filename;
    gpointer parent;
    gchar *icon_uri;
    gint size = 0;
    GError *error = NULL;

    web_view = E_WEB_VIEW (alert_sink);

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

    /* We use equivalent named icons instead of stock IDs,
     * since it's easier to get the filename of the icon. */
    switch (e_alert_get_message_type (alert)) {
        case GTK_MESSAGE_INFO:
            icon_name = "dialog-information";
            break;

        case GTK_MESSAGE_WARNING:
            icon_name = "dialog-warning";
            break;

        case GTK_MESSAGE_ERROR:
            icon_name = "dialog-error";
            break;

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

    gtk_icon_size_lookup (GTK_ICON_SIZE_DIALOG, &size, NULL);

    icon_info = gtk_icon_theme_lookup_icon (
        gtk_icon_theme_get_default (),
        icon_name, size, GTK_ICON_LOOKUP_NO_SVG);
    g_return_if_fail (icon_info != NULL);

    filename = gtk_icon_info_get_filename (icon_info);
    icon_uri = g_filename_to_uri (filename, NULL, &error);

    if (error != NULL) {
        g_warning ("%s", error->message);
        g_clear_error (&error);
    }

    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='%s'/>"
        "</td>"
        "<td align='left' width='100%%'>"
        "<h3>%s</h3>"
        "%s"
        "</td>"
        "</tr>",
        icon_uri,
        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);

    gtk_icon_info_free (icon_info);
    g_free (icon_uri);
}

static void
web_view_selectable_update_actions (ESelectable *selectable,
                                    EFocusTracker *focus_tracker,
                                    GdkAtom *clipboard_targets,
                                    gint n_clipboard_targets)
{
    EWebView *web_view;
    GtkAction *action;
    /*GtkTargetList *target_list;*/
    gboolean can_paste = FALSE;
    gboolean editable;
    gboolean have_selection;
    gboolean sensitive;
    const gchar *tooltip;
    /*gint ii;*/

    web_view = E_WEB_VIEW (selectable);
    editable = e_web_view_get_editable (web_view);
    have_selection = e_web_view_is_selection_active (web_view);

    /* XXX GtkHtml implements its own clipboard instead of using
     *     GDK_SELECTION_CLIPBOARD, so we don't get notifications
     *     when the clipboard contents change.  The logic below
     *     is what we would do if GtkHtml worked properly.
     *     Instead, we need to keep the Paste action sensitive so
     *     its accelerator overrides GtkHtml's key binding. */
#if 0
    target_list = e_selectable_get_paste_target_list (selectable);
    for (ii = 0; ii < n_clipboard_targets && !can_paste; ii++)
        can_paste = gtk_target_list_find (
            target_list, clipboard_targets[ii], NULL);
#endif
    can_paste = TRUE;

    action = e_focus_tracker_get_cut_clipboard_action (focus_tracker);
    sensitive = editable && have_selection;
    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 = have_selection;
    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 = editable && can_paste;
    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;
    GtkHTMLClass *html_class;

    parent_class = g_type_class_peek_parent (class);
    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;

    html_class = GTK_HTML_CLASS (class);
    html_class->url_requested = web_view_url_requested;
    html_class->link_clicked = web_view_gtkhtml_link_clicked;
    html_class->on_url = web_view_on_url;
    html_class->iframe_created = web_view_iframe_created;

    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->copy_clipboard = web_view_copy_clipboard;
    class->cut_clipboard = web_view_cut_clipboard;
    class->paste_clipboard = web_view_paste_clipboard;
    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_ANIMATE,
        g_param_spec_boolean (
            "animate",
            "Animate Images",
            NULL,
            FALSE,
            G_PARAM_READWRITE));

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

    /* Inherited from ESelectableInterface */
    g_object_class_override_property (
        object_class,
        PROP_COPY_TARGET_LIST,
        "copy-target-list");

    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_EDITABLE,
        g_param_spec_boolean (
            "editable",
            "Editable",
            NULL,
            FALSE,
            G_PARAM_READWRITE));

    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));

    /* Inherited from ESelectableInterface */
    g_object_class_override_property (
        object_class,
        PROP_PASTE_TARGET_LIST,
        "paste-target-list");

    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[COPY_CLIPBOARD] = g_signal_new (
        "copy-clipboard",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
        G_STRUCT_OFFSET (EWebViewClass, copy_clipboard),
        NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE, 0);

    signals[CUT_CLIPBOARD] = g_signal_new (
        "cut-clipboard",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
        G_STRUCT_OFFSET (EWebViewClass, cut_clipboard),
        NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE, 0);

    signals[PASTE_CLIPBOARD] = g_signal_new (
        "paste-clipboard",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
        G_STRUCT_OFFSET (EWebViewClass, paste_clipboard),
        NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE, 0);

    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__VOID,
        G_TYPE_NONE, 0);

    /* 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;
    GtkTargetList *target_list;
    EPopupAction *popup_action;
    const gchar *domain = GETTEXT_PACKAGE;
    const gchar *id;
    GError *error = NULL;

    web_view->priv = E_WEB_VIEW_GET_PRIVATE (web_view);

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

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

    target_list = gtk_target_list_new (NULL, 0);
    web_view->priv->copy_target_list = target_list;

    target_list = gtk_target_list_new (NULL, 0);
    web_view->priv->paste_target_list = target_list;

    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);

    e_extensible_load_extensions (E_EXTENSIBLE (web_view));
}

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));

    gtk_html_load_empty (GTK_HTML (web_view));
}

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);
}

gboolean
e_web_view_get_animate (EWebView *web_view)
{
    /* XXX This is just here to maintain symmetry
     *     with e_web_view_set_animate(). */

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    return gtk_html_get_animate (GTK_HTML (web_view));
}

void
e_web_view_set_animate (EWebView *web_view,
                        gboolean animate)
{
    /* XXX GtkHTML does not utilize GObject properties as well
     *     as it could.  This just wraps gtk_html_set_animate()
     *     so we can get a "notify::animate" signal. */

    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    gtk_html_set_animate (GTK_HTML (web_view), animate);

    g_object_notify (G_OBJECT (web_view), "animate");
}

gboolean
e_web_view_get_caret_mode (EWebView *web_view)
{
    /* XXX This is just here to maintain symmetry
     *     with e_web_view_set_caret_mode(). */

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    return gtk_html_get_caret_mode (GTK_HTML (web_view));
}

void
e_web_view_set_caret_mode (EWebView *web_view,
                           gboolean caret_mode)
{
    /* XXX GtkHTML does not utilize GObject properties as well
     *     as it could.  This just wraps gtk_html_set_caret_mode()
     *     so we can get a "notify::caret-mode" signal. */

    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    gtk_html_set_caret_mode (GTK_HTML (web_view), 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 web_view->priv->copy_target_list;
}

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));

    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));

    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_editable (EWebView *web_view)
{
    /* XXX This is just here to maintain symmetry
     *     with e_web_view_set_editable(). */

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), FALSE);

    return gtk_html_get_editable (GTK_HTML (web_view));
}

void
e_web_view_set_editable (EWebView *web_view,
                         gboolean editable)
{
    /* XXX GtkHTML does not utilize GObject properties as well
     *     as it could.  This just wraps gtk_html_set_editable()
     *     so we can get a "notify::editable" signal. */

    g_return_if_fail (E_IS_WEB_VIEW (web_view));

    gtk_html_set_editable (GTK_HTML (web_view), editable);

    g_object_notify (G_OBJECT (web_view), "editable");
}

gboolean
e_web_view_get_inline_spelling (EWebView *web_view)
{
    /* 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));
}

void
e_web_view_set_inline_spelling (EWebView *web_view,
                                gboolean inline_spelling)
{
    /* 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");
}

gboolean
e_web_view_get_magic_links (EWebView *web_view)
{
    /* 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));
}

void
e_web_view_set_magic_links (EWebView *web_view,
                            gboolean magic_links)
{
    /* 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");
}

gboolean
e_web_view_get_magic_smileys (EWebView *web_view)
{
    /* 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));
}

void
e_web_view_set_magic_smileys (EWebView *web_view,
                              gboolean magic_smileys)
{
    /* 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");
}

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));

    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 (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));

    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 (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 web_view->priv->paste_target_list;
}

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 (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 (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");
}

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,
                        GtkHTML *frame)
{
    EWebViewClass *class;

    g_return_val_if_fail (E_IS_WEB_VIEW (web_view), NULL);

    if (frame == NULL)
        frame = GTK_HTML (web_view);

    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, frame);
}

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

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

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

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

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

    return gtk_html_command (GTK_HTML (web_view), "is-selection-active");
}

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

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

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

    return gtk_html_command (GTK_HTML (web_view), "scroll-forward");
}

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

    return gtk_html_command (GTK_HTML (web_view), "scroll-backward");
}

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

    gtk_html_command (GTK_HTML (web_view), "select-all");
}

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

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

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

    gtk_html_command (GTK_HTML (web_view), "zoom-reset");
}

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

    gtk_html_command (GTK_HTML (web_view), "zoom-in");
}

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

    gtk_html_command (GTK_HTML (web_view), "zoom-out");
}

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);

    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)
{
    g_return_if_fail (E_IS_WEB_VIEW (web_view));

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