path: root/src/ephy-tab.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Copyright © 2000-2003 Marco Pesenti Gritti
 *  Copyright © 2003, 2004, 2005 Christian Persch
 *  Copyright © 2004 Crispin Flowerday
 *  Copyright © 2004 Adam Hooper
 *
 *  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.
 *
 *  $Id$
 */

#include "config.h"

#include "ephy-tab.h"
#include "ephy-type-builtins.h"
#include "ephy-embed-type-builtins.h"
#include "eel-gconf-extensions.h"
#include "ephy-prefs.h"
#include "ephy-embed-prefs.h"
#include "ephy-debug.h"
#include "ephy-string.h"
#include "ephy-notebook.h"
#include "ephy-file-helpers.h"
#include "ephy-zoom.h"
#include "ephy-favicon-cache.h"
#include "ephy-history.h"
#include "ephy-embed-shell.h"
#include "ephy-embed-single.h"
#include "ephy-shell.h"
#include "ephy-permission-manager.h"
#include "ephy-link.h"

#include <glib/gi18n.h>
#include <gtk/gtklabel.h>
#include <gtk/gtkbutton.h>
#include <gtk/gtkstock.h>
#include <gtk/gtkmisc.h>
#include <gtk/gtkhbox.h>
#include <gtk/gtkimage.h>
#include <gtk/gtkiconfactory.h>
#include <gtk/gtkstyle.h>
#include <gtk/gtkselection.h>
#include <gtk/gtkmain.h>
#include <gtk/gtkmenu.h>
#include <gtk/gtkuimanager.h>
#include <gtk/gtkclipboard.h>
#include <libgnomevfs/gnome-vfs.h>
#include <libgnomevfs/gnome-vfs-result.h>
#include <libgnomevfs/gnome-vfs-monitor.h>
#include <libgnomevfs/gnome-vfs-ops.h>
#include <libgnomevfs/gnome-vfs-uri.h>
#include <string.h>

#ifdef ENABLE_PYTHON
#include "ephy-python.h"
#endif

#define EPHY_TAB_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_TAB, EphyTabPrivate))

struct _EphyTabPrivate
{
    int width;
    int height;
    guint idle_resize_handler;
};

static void ephy_tab_class_init     (EphyTabClass *klass);
static void ephy_tab_init       (EphyTab *tab);
static void ephy_tab_dispose        (GObject *object);
static void ephy_tab_finalize       (GObject *object);

enum
{
    PROP_0,
};

static GObjectClass *parent_class;

/* Class functions */

GType
ephy_tab_get_type (void)
{
        static GType type = 0;

        if (G_UNLIKELY (type == 0))
        {
                const GTypeInfo our_info =
                {
                        sizeof (EphyTabClass),
                        NULL, /* base_init */
                        NULL, /* base_finalize */
                        (GClassInitFunc) ephy_tab_class_init,
                        NULL,
                        NULL, /* class_data */
                        sizeof (EphyTab),
                        0, /* n_preallocs */
                        (GInstanceInitFunc) ephy_tab_init
                };
        const GInterfaceInfo link_info = 
        {
            NULL,
            NULL,
            NULL
        };


                type = g_type_register_static (GTK_TYPE_BIN,
                           "EphyTab",
                           &our_info, 0);

        g_type_add_interface_static (type,
                         EPHY_TYPE_LINK,
                         &link_info);
        }

        return type;
}

static void
ephy_tab_size_request (GtkWidget *widget,
               GtkRequisition *requisition)
{
    GtkWidget *child;

    GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition);

    child = GTK_BIN (widget)->child;
    
    if (child && GTK_WIDGET_VISIBLE (child))
    {
        GtkRequisition child_requisition;
        gtk_widget_size_request (GTK_WIDGET (child), &child_requisition);
    }
}

static void
ephy_tab_size_allocate (GtkWidget *widget,
            GtkAllocation *allocation)
{
    GtkWidget *child;
    GtkAllocation invalid = { -1, -1, 1, 1 };

    widget->allocation = *allocation;

    child = GTK_BIN (widget)->child;
    g_return_if_fail (child != NULL);

    /* only resize if we're mapped (bug #128191),
     * or if this is the initial size-allocate (bug #156854).
     */
    if (GTK_WIDGET_MAPPED (child) ||
        memcmp (&child->allocation, &invalid, sizeof (GtkAllocation)) == 0)
    {
        gtk_widget_size_allocate (child, allocation);
    }
}

static void
ephy_tab_map (GtkWidget *widget)
{
    GtkWidget *child;

    g_return_if_fail (GTK_WIDGET_REALIZED (widget));

    child = GTK_BIN (widget)->child;
    g_return_if_fail (child != NULL);

    /* we do this since the window might have been resized while this
     * tab wasn't mapped (i.e. was a non-active tab during the resize).
     * See bug #156854.
     */
    if (memcmp (&widget->allocation, &child->allocation,
        sizeof (GtkAllocation)) != 0)
    {
        gtk_widget_size_allocate (child, &widget->allocation);
    }

    GTK_WIDGET_CLASS (parent_class)->map (widget);  
}

static void
ephy_tab_grab_focus (GtkWidget *widget)
{
    EphyTab *tab = EPHY_TAB (widget);

    gtk_widget_grab_focus (GTK_WIDGET (ephy_tab_get_embed (tab)));
}

static void
ephy_tab_class_init (EphyTabClass *class)
{
        GObjectClass *object_class = G_OBJECT_CLASS (class);
    GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(class);

        parent_class = g_type_class_peek_parent (class);

    object_class->dispose = ephy_tab_dispose;
    object_class->finalize = ephy_tab_finalize;

    widget_class->size_allocate = ephy_tab_size_allocate;
    widget_class->size_request = ephy_tab_size_request;
    widget_class->map = ephy_tab_map;
    widget_class->grab_focus = ephy_tab_grab_focus;

    g_type_class_add_private (object_class, sizeof (EphyTabPrivate));
}

static void
ephy_tab_dispose (GObject *object)
{
    EphyTab *tab = EPHY_TAB (object);
    EphyTabPrivate *priv = tab->priv;

    if (priv->idle_resize_handler != 0)
    {
        g_source_remove (priv->idle_resize_handler);
        priv->idle_resize_handler = 0;
    }

    G_OBJECT_CLASS (parent_class)->dispose (object);
}

static void
ephy_tab_finalize (GObject *object)
{
    EphyTab *tab = EPHY_TAB (object);

    G_OBJECT_CLASS (parent_class)->finalize (object);

#ifdef ENABLE_PYTHON
    ephy_python_schedule_gc ();
#endif

    LOG ("EphyTab finalized %p", tab);
}

static gboolean
address_has_web_scheme (const char *address)
{
    gboolean has_web_scheme;

    if (address == NULL) return FALSE;

    has_web_scheme = (g_str_has_prefix (address, "http:") ||
              g_str_has_prefix (address, "https:") ||
              g_str_has_prefix (address, "ftp:") ||
              g_str_has_prefix (address, "file:") ||
              g_str_has_prefix (address, "data:") ||
              g_str_has_prefix (address, "about:") ||
              g_str_has_prefix (address, "gopher:"));

    return has_web_scheme;
}

static gboolean
let_me_resize_hack (EphyTab *tab)
{
    EphyTabPrivate *priv = tab->priv;

    gtk_widget_set_size_request (GTK_WIDGET (tab), -1, -1);

    priv->idle_resize_handler = 0;  
    return FALSE;
}

/* Public functions */

/**
 * ephy_tab_new:
 *
 * Equivalent to g_object_new(), but returns an #EphyTab so you don't have to
 * cast it.
 *
 * Returns: a new #EphyTab
 **/
EphyTab *
ephy_tab_new (void)
{
    return EPHY_TAB (g_object_new (EPHY_TYPE_TAB, NULL));
}

/**
 * ephy_tab_get_embed:
 * @tab: an #EphyTab
 *
 * Returns @tab's #EphyEmbed.
 *
 * Return value: @tab's #EphyEmbed
 **/
EphyEmbed *
ephy_tab_get_embed (EphyTab *tab)
{
    g_return_val_if_fail (EPHY_IS_TAB (tab), NULL);

    return EPHY_EMBED (gtk_bin_get_child (GTK_BIN (tab)));
}

/**
 * ephy_tab_for_embed
 * @embed: an #EphyEmbed
 *
 * Returns the #EphyTab which holds @embed.
 *
 * Return value: the #EphyTab which holds @embed
 **/
EphyTab *
ephy_tab_for_embed (EphyEmbed *embed)
{
    GtkWidget *parent;

    g_return_val_if_fail (EPHY_IS_EMBED (embed), NULL);

    parent = GTK_WIDGET (embed)->parent;
    g_return_val_if_fail (parent != NULL, NULL);

    return EPHY_TAB (parent);
}

/**
 * ephy_tab_get_size:
 * @tab: an #EphyTab
 * @width: return location for width, or %NULL
 * @height: return location for height, or %NULL
 *
 * Obtains the size of @tab. This is not guaranteed to be the actual number of
 * pixels occupied by the #EphyTab.
 **/
void
ephy_tab_get_size (EphyTab *tab, int *width, int *height)
{
    g_return_if_fail (EPHY_IS_TAB (tab));

    if (width != NULL)
    {
        *width = tab->priv->width;
    }
    if (height != NULL)
    {
        *height = tab->priv->height;
    }
}

/**
 * ephy_tab_set_size:
 * @tab: an #EphyTab
 * @width:
 * @height:
 *
 * Sets the size of @tab. This is not guaranteed to actually resize the tab.
 **/
void
ephy_tab_set_size (EphyTab *tab,
           int width,
           int height)
{
    EphyTabPrivate *priv = tab->priv;
    GtkWidget *widget = GTK_WIDGET (tab);
    GtkAllocation allocation;

    priv->width = width;
    priv->height = height;

    gtk_widget_set_size_request (widget, width, height);

    /* HACK: When the web site changes both width and height,
     * we will first get a width change, then a height change,
     * without actually resizing the window in between (since
     * that happens only on idle).
     * If we don't set the allocation, GtkMozEmbed doesn't tell
     * mozilla the new width, so the height change sets the width
     * back to the old value!
     */
    allocation.x = widget->allocation.x;
    allocation.y = widget->allocation.y;
    allocation.width = width;
    allocation.height = height;
    gtk_widget_size_allocate (widget, &allocation);

    /* HACK: reset widget requisition after the container
     * has been resized. It appears to be the only way
     * to have the window sized according to embed
     * size correctly.
     */
    if (priv->idle_resize_handler == 0)
    {
        priv->idle_resize_handler =
            g_idle_add ((GSourceFunc) let_me_resize_hack, tab);
    }
}

/* Private callbacks for embed signals */

static void
ephy_tab_init (EphyTab *tab)
{
    EphyTabPrivate *priv;
    GObject *embed;

    LOG ("EphyTab initialising %p", tab);

    priv = tab->priv = EPHY_TAB_GET_PRIVATE (tab);

    tab->priv->width = -1;
    tab->priv->height = -1;

    embed = ephy_embed_factory_new_object (EPHY_TYPE_EMBED);
    g_assert (embed != NULL);

    gtk_container_add (GTK_CONTAINER (tab), GTK_WIDGET (embed));
    gtk_widget_show (GTK_WIDGET (embed));
}