path: root/src/ephy-encoding-dialog.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Copyright © 2000, 2001, 2002, 2003 Marco Pesenti Gritti
 *  Copyright © 2003, 2004 Christian Persch
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "config.h"

#include "ephy-encoding-dialog.h"
#include "ephy-encodings.h"
#include "ephy-embed.h"
#include "ephy-embed-container.h"
#include "ephy-embed-shell.h"
#include "ephy-embed-utils.h"
#include "ephy-file-helpers.h"
#include "ephy-shell.h"
#include "ephy-node.h"
#include "ephy-node-view.h"
#include "ephy-debug.h"
#include "ephy-gui.h"

#include <gtk/gtk.h>
#include <glib/gi18n.h>
#include <string.h>
#include <webkit/webkit.h>

enum
{
    WINDOW_PROP,
    SCROLLED_WINDOW_PROP,
    AUTOMATIC_PROP,
    MANUAL_PROP
};

static const
EphyDialogProperty properties [] =
{
    { "encoding_dialog",    NULL, PT_NORMAL, 0 },
    { "scrolled_window",    NULL, PT_NORMAL, 0 },
    { "automatic_button",   NULL, PT_NORMAL, 0 },
    { "manual_button",  NULL, PT_NORMAL, 0 },

    { NULL }
};

#define EPHY_ENCODING_DIALOG_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_ENCODING_DIALOG, EphyEncodingDialogPrivate))

struct _EphyEncodingDialogPrivate
{
    EphyEncodings *encodings;
    EphyWindow *window;
    EphyEmbed *embed;
    GtkWidget *enc_view;
    EphyNodeFilter *filter;
    EphyNode *selected_node;
    gboolean update_tag;
};

static void ephy_encoding_dialog_class_init     (EphyEncodingDialogClass *klass);
static void ephy_encoding_dialog_init       (EphyEncodingDialog *ge);

G_DEFINE_TYPE (EphyEncodingDialog, ephy_encoding_dialog, EPHY_TYPE_EMBED_DIALOG)

static void
sync_encoding_against_embed (EphyEncodingDialog *dialog)
{
    EphyEmbed *embed;
    EphyNode *node;
        GtkTreeSelection *selection;
        GtkTreeModel *model;
        GList *rows;
    GtkWidget *button;
    const char *encoding;
    gboolean is_automatic = FALSE;
    WebKitWebView *view;

    dialog->priv->update_tag = TRUE;

    embed = ephy_embed_dialog_get_embed (EPHY_EMBED_DIALOG (dialog));
    g_return_if_fail (EPHY_IS_EMBED (embed));

    view = EPHY_GET_WEBKIT_WEB_VIEW_FROM_EMBED (embed);
    encoding = webkit_web_view_get_custom_encoding (view);
    if (encoding == NULL)
    {
        encoding = webkit_web_view_get_encoding (view);
        if (encoding == NULL) return;
        is_automatic = TRUE;
    }

    node = ephy_encodings_get_node (dialog->priv->encodings, encoding, TRUE);
    g_assert (EPHY_IS_NODE (node));

    /* select the current encoding in the list view */
    ephy_node_view_select_node (EPHY_NODE_VIEW (dialog->priv->enc_view),
                    node);

    /* scroll the view so the active encoding is visible */
        selection = gtk_tree_view_get_selection
                (GTK_TREE_VIEW (dialog->priv->enc_view));
    model = gtk_tree_view_get_model (GTK_TREE_VIEW (dialog->priv->enc_view));
        rows = gtk_tree_selection_get_selected_rows (selection, &model);
        if (rows != NULL)
    {
        gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (dialog->priv->enc_view),
                          (GtkTreePath *) rows->data,
                          NULL, /* column */
                          TRUE,
                          0.5,
                          0.0);
        g_list_foreach (rows, (GFunc)gtk_tree_path_free, NULL);
        g_list_free (rows);
    }

    button = ephy_dialog_get_control (EPHY_DIALOG (dialog), properties[AUTOMATIC_PROP].id);
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), is_automatic);

    dialog->priv->update_tag = FALSE;
}


static void
embed_net_stop_cb (EphyWebView *view,
           GParamSpec *pspec,
           EphyEncodingDialog *dialog)
{
    if (ephy_web_view_is_loading (view) == FALSE)
        sync_encoding_against_embed (dialog);
}

static void
sync_embed_cb (EphyEncodingDialog *dialog, GParamSpec *pspec, gpointer dummy)
{
    EphyEmbed *embed;
    embed = ephy_embed_dialog_get_embed (EPHY_EMBED_DIALOG (dialog));

    if (dialog->priv->embed != NULL)
    {
        g_signal_handlers_disconnect_by_func (dialog->priv->embed,
                              G_CALLBACK (embed_net_stop_cb),
                              dialog);
    }

    g_signal_connect (G_OBJECT (EPHY_GET_EPHY_WEB_VIEW_FROM_EMBED (embed)), "notify::load-status",
              G_CALLBACK (embed_net_stop_cb), dialog);
    dialog->priv->embed = embed;

    sync_encoding_against_embed (dialog);
}

static void
sync_active_tab (EphyWindow *window, GParamSpec *pspec, EphyEncodingDialog *dialog)
{
    EphyEmbed *embed;

    embed = ephy_embed_container_get_active_child (EPHY_EMBED_CONTAINER (dialog->priv->window));

    g_object_set (G_OBJECT (dialog), "embed", embed, NULL);
}

static void
sync_parent_window_cb (EphyEncodingDialog *dialog, GParamSpec *pspec, gpointer dummy)
{
    EphyWindow *window;
    GValue value = { 0, };

    g_return_if_fail (dialog->priv->window == NULL);

    g_value_init (&value, GTK_TYPE_WIDGET);
    g_object_get_property (G_OBJECT (dialog), "parent-window", &value);
    window = EPHY_WINDOW (g_value_get_object (&value));
    g_value_unset (&value);

    g_return_if_fail (EPHY_IS_WINDOW (window));

    dialog->priv->window = window;

    sync_active_tab (window, NULL, dialog);
    g_signal_connect (G_OBJECT (window), "notify::active-child",
              G_CALLBACK (sync_active_tab), dialog);
}

static void
activate_choice (EphyEncodingDialog *dialog)
{
    EphyEmbed *embed;
    GtkWidget *button;
    gboolean is_automatic;
    WebKitWebView *view;

    embed = ephy_embed_dialog_get_embed (EPHY_EMBED_DIALOG (dialog));
    g_return_if_fail (EPHY_IS_EMBED (embed));

    button = ephy_dialog_get_control (EPHY_DIALOG (dialog), properties[AUTOMATIC_PROP].id);
    is_automatic = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button));

    view = EPHY_GET_WEBKIT_WEB_VIEW_FROM_EMBED (embed);

    if (is_automatic)
    {
        webkit_web_view_set_custom_encoding (view, NULL);
    }
    else if (dialog->priv->selected_node != NULL)
    {
        const char *code;

        code = ephy_node_get_property_string (dialog->priv->selected_node,
                              EPHY_NODE_ENCODING_PROP_ENCODING);

        webkit_web_view_set_custom_encoding (view, code);

        ephy_encodings_add_recent (dialog->priv->encodings, code);
    }
}

static void
ephy_encoding_dialog_response_cb (GtkWidget *widget,
                  int response,
                  EphyEncodingDialog *dialog)
{
    if (response == GTK_RESPONSE_HELP)
    {
        ephy_gui_help (GTK_WINDOW (widget), "epiphany", "text-encoding");
        return;
    }

    g_object_unref (dialog);
}

static void
view_node_selected_cb (EphyNodeView *view,
               EphyNode *node,
               EphyEncodingDialog *dialog)
{
    GtkWidget *button;

    dialog->priv->selected_node = node;

    if (dialog->priv->update_tag) return;

    button = ephy_dialog_get_control (EPHY_DIALOG (dialog), properties[MANUAL_PROP].id);
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);

    activate_choice (dialog);
}

static void
view_node_activated_cb (GtkWidget *view,
            EphyNode *node,
            EphyEncodingDialog *dialog)
{
    GtkWidget *button;

    dialog->priv->selected_node = node;

    if (dialog->priv->update_tag) return;

    button = ephy_dialog_get_control (EPHY_DIALOG (dialog), properties[MANUAL_PROP].id);
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);

    activate_choice (dialog);

    g_object_unref (dialog);
}

static void
automatic_toggled_cb (GtkToggleButton *button, EphyEncodingDialog *dialog)
{
    if (gtk_toggle_button_get_active (button)
        && dialog->priv->update_tag == FALSE)
    {
        activate_choice (dialog);
    }
}

static void
ephy_encoding_dialog_init (EphyEncodingDialog *dialog)
{
    GtkWidget *treeview, *scroller, *button, *window, *child;
    GtkTreeSelection *selection;
    EphyNode *node;

    dialog->priv = EPHY_ENCODING_DIALOG_GET_PRIVATE (dialog);

    dialog->priv->encodings =
        EPHY_ENCODINGS (ephy_embed_shell_get_encodings
                (EPHY_EMBED_SHELL (ephy_shell)));

    ephy_dialog_construct (EPHY_DIALOG (dialog),
                   properties,
                   ephy_file ("epiphany.ui"),
                   "encoding_dialog",
                   NULL);

    window = ephy_dialog_get_control (EPHY_DIALOG (dialog), properties[WINDOW_PROP].id);
    g_signal_connect (window, "response",
              G_CALLBACK (ephy_encoding_dialog_response_cb), dialog);

    dialog->priv->filter = ephy_node_filter_new ();

    node = ephy_encodings_get_all (dialog->priv->encodings);
    treeview = ephy_node_view_new (node, dialog->priv->filter);

    ephy_node_view_add_column (EPHY_NODE_VIEW (treeview), _("Encodings"),
                   G_TYPE_STRING,
                   EPHY_NODE_ENCODING_PROP_TITLE_ELIDED,
                   EPHY_NODE_VIEW_SEARCHABLE,
                   NULL, NULL);

    ephy_node_view_set_sort (EPHY_NODE_VIEW (treeview), G_TYPE_STRING,
                 EPHY_NODE_ENCODING_PROP_TITLE_ELIDED,
                 GTK_SORT_ASCENDING);

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview));
    gtk_tree_selection_set_mode (selection, GTK_SELECTION_BROWSE);
    gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(treeview), FALSE);

    g_signal_connect (G_OBJECT (treeview),
              "node_selected",
              G_CALLBACK (view_node_selected_cb),
              dialog);
    g_signal_connect (G_OBJECT (treeview),
              "node_activated",
              G_CALLBACK (view_node_activated_cb),
              dialog);

    gtk_widget_show (treeview);

    scroller = ephy_dialog_get_control
            (EPHY_DIALOG (dialog), properties[SCROLLED_WINDOW_PROP].id);
    gtk_container_add (GTK_CONTAINER (scroller), treeview);

    child = gtk_bin_get_child (GTK_BIN (button));

    button = ephy_dialog_get_control (EPHY_DIALOG (dialog), properties[AUTOMATIC_PROP].id);
    gtk_label_set_use_markup (GTK_LABEL (child), TRUE);
    g_signal_connect (button, "toggled",
              G_CALLBACK (automatic_toggled_cb), dialog);

    button = ephy_dialog_get_control (EPHY_DIALOG (dialog), properties[MANUAL_PROP].id);
    gtk_label_set_use_markup (GTK_LABEL (child), TRUE);

    dialog->priv->enc_view = treeview;

    g_signal_connect (G_OBJECT (dialog), "notify::parent-window",
              G_CALLBACK (sync_parent_window_cb), NULL);
    g_signal_connect (G_OBJECT (dialog), "notify::embed",
              G_CALLBACK (sync_embed_cb), NULL);
}

static void
ephy_encoding_dialog_finalize (GObject *object)
{
    EphyEncodingDialog *dialog = EPHY_ENCODING_DIALOG (object);

    if (dialog->priv->window != NULL)
    {
        g_signal_handlers_disconnect_by_func (dialog->priv->window,
                              G_CALLBACK (sync_active_tab),
                              dialog);
    }

    if (dialog->priv->embed)
    {
        g_signal_handlers_disconnect_by_func (EPHY_GET_EPHY_WEB_VIEW_FROM_EMBED (dialog->priv->embed),
                              G_CALLBACK (embed_net_stop_cb),
                              dialog);
    }

    g_object_unref (dialog->priv->filter);

    G_OBJECT_CLASS (ephy_encoding_dialog_parent_class)->finalize (object);
}

static void
ephy_encoding_dialog_class_init (EphyEncodingDialogClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    object_class->finalize = ephy_encoding_dialog_finalize;

    g_type_class_add_private (object_class, sizeof(EphyEncodingDialogPrivate));
}
        
EphyEncodingDialog *
ephy_encoding_dialog_new (EphyWindow *parent)
{
    return g_object_new (EPHY_TYPE_ENCODING_DIALOG,
                 "parent-window", parent,
                 "default-width", 350,
                     "default-height", 420,
                 NULL);
}