path: root/lib/widgets/ephy-location-entry.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Copyright (C) 2002  Ricardo Fernández Pascual
 *  Copyright (C) 2003, 2004  Marco Pesenti Gritti
 *  Copyright (C) 2003, 2004, 2005  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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 *  $Id$
 */

#include "config.h"

#include "ephy-icon-entry.h"
#include "ephy-tree-model-node.h"
#include "ephy-location-entry.h"
#include "ephy-marshal.h"
#include "ephy-signal-accumulator.h"
#include "ephy-dnd.h"
#include "egg-editable-toolbar.h"
#include "ephy-stock-icons.h"
#include "ephy-debug.h"

#include <glib/gi18n.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtktoolbar.h>
#include <gtk/gtkentry.h>
#include <gtk/gtkwindow.h>
#include <gtk/gtkcellrenderertext.h>
#include <gtk/gtkcelllayout.h>
#include <gtk/gtktreemodelsort.h>
#include <gtk/gtkstock.h>
#include <gtk/gtkimage.h>
#include <gtk/gtkeventbox.h>
#include <gtk/gtkbox.h>
#include <gtk/gtkhbox.h>
#include <gtk/gtkvbox.h>
#include <gtk/gtkimagemenuitem.h>
#include <gtk/gtkseparatormenuitem.h>
#include <gtk/gtkalignment.h>
#include <gtk/gtkclipboard.h>

#include <string.h>

#define EPHY_LOCATION_ENTRY_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_LOCATION_ENTRY, EphyLocationEntryPrivate))

struct _EphyLocationEntryPrivate
{
    GtkTooltips *tips;
    EphyIconEntry *icon_entry;
    GtkWidget *icon_ebox;
    GtkWidget *icon;
    GtkWidget *lock_ebox;
    GtkWidget *lock;
    GdkPixbuf *favicon;
    GdkColor secure_bg_colour;
    GdkColor secure_fg_colour;

    char *before_completion;

    guint text_col;
    guint action_col;
    guint keywords_col;
    guint relevance_col;

    guint hash;

    guint user_changed : 1;
    guint original_address : 1;
    guint secure : 1;
    guint apply_colours : 1;
};

static const struct
{
    const char *prefix;
    int len;
}
web_prefixes [] =
{
    { "http://www.", 11 },
    { "http://", 7 },
    { "https://www.", 12 },
    { "https://", 8 },
    { "www.", 4 }
};

static const GtkTargetEntry url_drag_types [] =
{
    { EPHY_DND_URL_TYPE,        0, 0 },
    { EPHY_DND_URI_LIST_TYPE,   0, 1 },
    { EPHY_DND_TEXT_TYPE,       0, 2 }
};

static const GdkColor fallback_bg_colour = { 0, 0xf7f7, 0xf7f7, 0xbebe }; /* yellow-ish */

static void ephy_location_entry_class_init (EphyLocationEntryClass *klass);
static void ephy_location_entry_init (EphyLocationEntry *le);

static GObjectClass *parent_class = NULL;

enum signalsEnum
{
    USER_CHANGED,
    LOCK_CLICKED,
    GET_LOCATION,
    GET_TITLE,
    LAST_SIGNAL
};
static gint signals[LAST_SIGNAL] = { 0 };

#define MAX_LOC_HISTORY_ITEMS 10
#define EPHY_LOC_HISTORY_XML_ROOT "ephy_location_history"
#define EPHY_LOC_HISTORY_XML_VERSION "0.1"

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

    if (G_UNLIKELY (type == 0))
    {
        static const GTypeInfo our_info =
        {
            sizeof (EphyLocationEntryClass),
            NULL,
            NULL,
            (GClassInitFunc) ephy_location_entry_class_init,
            NULL,
            NULL,
            sizeof (EphyLocationEntry),
            0,
            (GInstanceInitFunc) ephy_location_entry_init
        };

        type = g_type_register_static (GTK_TYPE_TOOL_ITEM,
                           "EphyLocationEntry",
                           &our_info, 0);
    }

    return type;
}

static gboolean
ephy_location_entry_set_tooltip (GtkToolItem *tool_item,
                 GtkTooltips *tooltips,
                 const char *tip_text,
                 const char *tip_private)
{
    EphyLocationEntry *entry = EPHY_LOCATION_ENTRY (tool_item);
    EphyLocationEntryPrivate *priv = entry->priv;

    gtk_tooltips_set_tip (tooltips, priv->icon_entry->entry,
                  tip_text, tip_private);

    return TRUE;
}

static void
ephy_location_entry_style_set (GtkWidget *widget,
                   GtkStyle *previous_style)
{
    EphyLocationEntry *entry = EPHY_LOCATION_ENTRY (widget);
    EphyLocationEntryPrivate *priv = entry->priv;
    GtkSettings *settings;
    GdkColor *bg_colour = NULL, *fg_colour = NULL;
    char *theme;
    gboolean is_a11y_theme;

    if (GTK_WIDGET_CLASS (parent_class)->style_set)
    {
        GTK_WIDGET_CLASS (parent_class)->style_set (widget, previous_style);
    }

    settings = gtk_settings_get_for_screen (gtk_widget_get_screen (widget));
    g_object_get (settings, "gtk-theme-name", &theme, NULL);
    is_a11y_theme = strncmp (theme, "HighContrast", strlen ("HighContrast")) == 0 ||
            strncmp (theme, "LowContrast", strlen ("LowContrast")) == 0;
    g_free (theme);

    gtk_widget_style_get (widget,
                  "secure-fg-color", &fg_colour,
                  "secure-bg-color", &bg_colour,
                  NULL);

    /* We only use the fallback colours when we don't have an a11y theme */
    priv->apply_colours = !is_a11y_theme || (fg_colour != NULL && bg_colour != NULL);

    if (fg_colour != NULL)
    {
        priv->secure_fg_colour = *fg_colour;
        gdk_color_free (fg_colour);
    }
    else
    {
        /* FIXME: fall back to black text maybe? */
        priv->secure_fg_colour = widget->style->text[GTK_STATE_NORMAL];
    }

    if (bg_colour != NULL)
    {
        priv->secure_bg_colour = *bg_colour;
        gdk_color_free (bg_colour);
    }
    else
    {
        priv->secure_bg_colour = fallback_bg_colour;
    }

    /* Apply the new style */
    ephy_location_entry_set_secure (entry, priv->secure);
}

static void
ephy_location_entry_finalize (GObject *object)
{
    EphyLocationEntry *entry = EPHY_LOCATION_ENTRY (object);
    EphyLocationEntryPrivate *priv = entry->priv;

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

    g_object_unref (priv->tips);

    parent_class->finalize (object);
}

static void
ephy_location_entry_class_init (EphyLocationEntryClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);
    GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
    GtkToolItemClass *tool_item_class = GTK_TOOL_ITEM_CLASS (klass);

    parent_class = g_type_class_peek_parent (klass);

    object_class->finalize = ephy_location_entry_finalize;

    widget_class->style_set = ephy_location_entry_style_set;

    tool_item_class->set_tooltip = ephy_location_entry_set_tooltip;

    signals[USER_CHANGED] = g_signal_new (
        "user_changed", G_OBJECT_CLASS_TYPE (klass),
        G_SIGNAL_RUN_FIRST | G_SIGNAL_RUN_LAST,
                G_STRUCT_OFFSET (EphyLocationEntryClass, user_changed),
        NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE,
        0,
        G_TYPE_NONE);

    signals[LOCK_CLICKED] = g_signal_new (
        "lock-clicked",
        EPHY_TYPE_LOCATION_ENTRY,
        G_SIGNAL_RUN_FIRST | G_SIGNAL_RUN_LAST,
        G_STRUCT_OFFSET (EphyLocationEntryClass, lock_clicked),
        NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE,
        0);

    signals[GET_LOCATION] = g_signal_new (
        "get-location", G_OBJECT_CLASS_TYPE (klass),
        G_SIGNAL_RUN_FIRST | G_SIGNAL_RUN_LAST,
                G_STRUCT_OFFSET (EphyLocationEntryClass, get_location),
        ephy_signal_accumulator_string, NULL,
        ephy_marshal_STRING__VOID,
        G_TYPE_STRING,
        0,
        G_TYPE_NONE);

    signals[GET_TITLE] = g_signal_new (
        "get-title", G_OBJECT_CLASS_TYPE (klass),
        G_SIGNAL_RUN_FIRST | G_SIGNAL_RUN_LAST,
                G_STRUCT_OFFSET (EphyLocationEntryClass, get_title),
        ephy_signal_accumulator_string, NULL,
        ephy_marshal_STRING__VOID,
        G_TYPE_STRING,
        0,
        G_TYPE_NONE);

        gtk_widget_class_install_style_property (widget_class,
                                                 g_param_spec_boxed ("secure-bg-color",
                                                                     "Secure background colour",
                                                                     "Background colour to use for secure sites",
                                                                     GDK_TYPE_COLOR,
                                                                     G_PARAM_READABLE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB));

        gtk_widget_class_install_style_property (widget_class,
                                                 g_param_spec_boxed ("secure-fg-color",
                                                                     "Secure foreground Colour",
                                                                     "Foreground colour to use for secure sites",
                                                                     GDK_TYPE_COLOR,
                                                                     G_PARAM_READABLE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB));

    g_type_class_add_private (object_class, sizeof (EphyLocationEntryPrivate));
}

static void
update_address_state (EphyLocationEntry *entry)
{
    EphyLocationEntryPrivate *priv = entry->priv;
    const char *text;

    text = gtk_entry_get_text (GTK_ENTRY (priv->icon_entry->entry));
    priv->original_address = text != NULL &&
                 g_str_hash (text) == priv->hash;
}

static void
update_favicon (EphyLocationEntry *entry)
{
    EphyLocationEntryPrivate *priv = entry->priv;
    GtkImage *image = GTK_IMAGE (priv->icon);

    /* Only show the favicon if the entry's text is the
     * address of the current page.
     */
    if (priv->favicon != NULL && priv->original_address)
    {
        gtk_image_set_from_pixbuf (image, priv->favicon);
    }
    else
    {
        gtk_image_set_from_stock (image,
                      GTK_STOCK_NEW,
                      GTK_ICON_SIZE_MENU);
    }
}

static void
editable_changed_cb (GtkEditable *editable,
             EphyLocationEntry *entry)
{
    EphyLocationEntryPrivate *priv = entry->priv;

    update_address_state (entry);

    if (priv->user_changed == FALSE) return;

    update_favicon (entry);

    g_signal_emit (entry, signals[USER_CHANGED], 0);
}

static gboolean
entry_button_press_cb (GtkWidget *entry, GdkEventButton *event, EphyLocationEntry *le)
{
    if (event->button == 1 && event->type == GDK_2BUTTON_PRESS)
    {
        ephy_location_entry_activate (le);
        return TRUE;
    }

    return FALSE;
}

static gboolean
entry_key_press_cb (GtkEntry *entry,
            GdkEventKey *event,
            EphyLocationEntry *lentry)
{
    guint state = event->state & gtk_accelerator_get_default_mod_mask ();

    if ((event->keyval == GDK_Return ||
         event->keyval == GDK_KP_Enter ||
         event->keyval == GDK_ISO_Enter) &&
        (state == GDK_CONTROL_MASK ||
         state == (GDK_CONTROL_MASK | GDK_SHIFT_MASK)))
    {
        gtk_im_context_reset (entry->im_context);

        g_signal_emit_by_name (entry, "activate");

        return TRUE;
    }

    if (event->keyval == GDK_Escape && state == 0)
    {
        ephy_location_entry_reset (lentry);
        /* don't return TRUE since we want to cancel the autocompletion popup too */
    }

    return FALSE;
}

static gboolean
keyword_match (const char *list,
           const char *keyword)
{
    const char *p;
    gsize keyword_len;

    p = list;
    keyword_len = strlen (keyword);

    while (*p)
    {
        int i;

        for (i = 0; i < keyword_len; i++)
        {
            if (p[i] != keyword[i])
            {
                goto next_token;
            }
        }
      
        return TRUE;
      
        next_token:

        while (*p && *p != ' ') p++;
        if (*p) p++;
    }

    return FALSE;
}

static gboolean
completion_func (GtkEntryCompletion *completion,
                 const char *key,
         GtkTreeIter *iter,
         gpointer data)
{
    int i, len_key, len_prefix;
    char *item = NULL;
    char *keywords = NULL;
    gboolean ret = FALSE;
    EphyLocationEntry *le = EPHY_LOCATION_ENTRY (data);
    GtkTreeModel *model;

    model = gtk_entry_completion_get_model (completion);

    gtk_tree_model_get (model, iter,
                le->priv->text_col, &item,
                le->priv->keywords_col, &keywords,
                -1);

    len_key = strlen (key);
    if (!strncasecmp (key, item, len_key))
    {
        ret = TRUE;
    }
    else if (keyword_match (keywords, key))
    {
        ret = TRUE;
    }
    else
    {
        for (i = 0; i < G_N_ELEMENTS (web_prefixes); i++)
        {
            len_prefix = web_prefixes[i].len;
            if (!strncmp (web_prefixes[i].prefix, item, len_prefix) &&
                !strncasecmp (key, item + len_prefix, len_key))
            {
                ret = TRUE;
                break;
            }
        }
    }

    g_free (item);
    g_free (keywords);

    return ret;
}

static gboolean
match_selected_cb (GtkEntryCompletion *completion,
           GtkTreeModel *model,
           GtkTreeIter *iter,
           EphyLocationEntry *entry)
{
    EphyLocationEntryPrivate *priv = entry->priv;
    char *item = NULL;

    gtk_tree_model_get (model, iter,
                priv->action_col, &item, -1);
    if (item == NULL) return FALSE;

    ephy_location_entry_set_location (entry, item, NULL);
    g_signal_emit_by_name (priv->icon_entry->entry, "activate");

    g_free (item);

    return TRUE;
}

static gboolean
toolbar_is_editable (GtkWidget *widget)
{
    GtkWidget *etoolbar;

    etoolbar = gtk_widget_get_ancestor (widget, EGG_TYPE_EDITABLE_TOOLBAR);

    if (etoolbar)
    {
        return egg_editable_toolbar_get_edit_mode
            (EGG_EDITABLE_TOOLBAR (etoolbar));
    }

    return FALSE;
}

static gboolean
entry_drag_motion_cb (GtkWidget        *widget,
              GdkDragContext   *context,
              gint              x,
              gint              y,
              guint             time)
{
    if (toolbar_is_editable (widget))
    {
        g_signal_stop_emission_by_name (widget, "drag_motion");
    }
    
    return FALSE;
}

static gboolean
entry_drag_drop_cb (GtkWidget          *widget,
            GdkDragContext     *context,
            gint                x,
            gint                y,
            guint               time)
{
    if (toolbar_is_editable (widget))
    {
        g_signal_stop_emission_by_name (widget, "drag_drop");
    }

    return FALSE;
}

static void
entry_clear_activate_cb (GtkMenuItem *item,
             EphyLocationEntry *entry)
{
    EphyLocationEntryPrivate *priv = entry->priv;

    priv->user_changed = FALSE;
    gtk_entry_set_text (GTK_ENTRY (priv->icon_entry->entry), "");
    priv->user_changed = TRUE;
}

static void
entry_populate_popup_cb (GtkEntry *entry,
             GtkMenu *menu,
             EphyLocationEntry *lentry)
{
    EphyLocationEntryPrivate *priv = lentry->priv;
    GtkWidget *image;
    GtkWidget *menuitem;
    GList *children, *item;
    int pos = 0, sep = 0;
    gboolean is_editable;

    /* Clear and Copy mnemonics conflict, make custom menuitem */
    image = gtk_image_new_from_stock (GTK_STOCK_CLEAR, GTK_ICON_SIZE_MENU);
    gtk_widget_show (image);

    /* Translators: the mnemonic shouldn't conflict with any of the
     * standard items in the GtkEntry context menu (Cut, Copy, Paste, Delete,
     * Select All, Input Methods and Insert Unicode control character.)
     */
    menuitem = gtk_image_menu_item_new_with_mnemonic (_("Cl_ear"));
    gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM(menuitem), image);
    g_signal_connect (menuitem , "activate",
              G_CALLBACK (entry_clear_activate_cb), lentry);
    is_editable = gtk_editable_get_editable (GTK_EDITABLE (priv->icon_entry->entry));
    gtk_widget_set_sensitive (menuitem, is_editable);
    gtk_widget_show (menuitem);

    /* search for the 2nd separator (the one after Select All) in the context
     * menu, and insert this menu item before it.
     * It's a bit of a hack, but there seems to be no better way to do it :/
     */
    children = GTK_MENU_SHELL (menu)->children;
    for (item = children; item != NULL && sep < 2; item = item->next, pos++)
    {
        if (GTK_IS_SEPARATOR_MENU_ITEM (item->data)) sep++;
    }

    gtk_menu_shell_insert (GTK_MENU_SHELL (menu), menuitem, pos - 1);
}

static void
each_url_get_data_binder (EphyDragEachSelectedItemDataGet iteratee,
              gpointer iterator_context,
              gpointer return_data)
{
    EphyLocationEntry *entry = EPHY_LOCATION_ENTRY (iterator_context);
    char *title = NULL, *address = NULL;

    g_signal_emit (entry, signals[GET_LOCATION], 0, &address);
    g_signal_emit (entry, signals[GET_TITLE], 0, &title);
    g_return_if_fail (address != NULL && title != NULL);

    iteratee (address, title, return_data);

    g_free (address);
    g_free (title);
}

#define DRAG_ICON_LAYOUT_BORDER     2
#define DRAG_ICON_ICON_SPACING      DRAG_ICON_LAYOUT_BORDER * 2
#define DRAG_ICON_MAX_WIDTH_CHARS   32

static GdkPixmap *
favicon_create_drag_pixmap (EphyLocationEntry *entry,
                GtkWidget *widget)
{
    EphyLocationEntryPrivate *priv = entry->priv;
    char *title = NULL, *address = NULL;
    GString *text;
    GdkDrawable *drawable;
    PangoContext *context;
    PangoLayout  *layout;
    PangoFontMetrics *metrics;
    int pixmap_height, pixmap_width;
    int layout_width, layout_height;
    int icon_width = 0, icon_height = 0, offset_x = 0;
    int char_width;

    g_signal_emit (entry, signals[GET_LOCATION], 0, &address);
    g_signal_emit (entry, signals[GET_TITLE], 0, &title);
    if (address == NULL || title == NULL) return NULL;

    /* Compute text */
    title = g_strstrip (title);

    text = g_string_sized_new (strlen (address) + strlen (title) + 2);
    if (title[0] != '\0')
    {
        g_string_append (text, title);
        g_string_append (text, "\n");
    }

    if (address[0] != '\0')
    {
        g_string_append (text, address);
    }

    /* Now build the pixmap */

    if (priv->favicon != NULL)
    {
        icon_width = gdk_pixbuf_get_width (priv->favicon);
        icon_height = gdk_pixbuf_get_height (priv->favicon);
    }

    context = gtk_widget_get_pango_context (widget);
    layout = pango_layout_new (context);

    context = gtk_widget_get_pango_context (widget);
    metrics = pango_context_get_metrics (context,
                         widget->style->font_desc,
                         pango_context_get_language (context));

    char_width = pango_font_metrics_get_approximate_digit_width (metrics);
    pango_font_metrics_unref (metrics);

    pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_END);
    pango_layout_set_width (layout, char_width * DRAG_ICON_MAX_WIDTH_CHARS);
    pango_layout_set_text (layout, text->str, text->len);

    pango_layout_get_size (layout, &layout_width, &layout_height);

    pixmap_width  = layout_width  / PANGO_SCALE + DRAG_ICON_LAYOUT_BORDER * 2;

    if (priv->favicon != NULL)
    {
        offset_x = icon_width + 2 * DRAG_ICON_ICON_SPACING;
        pixmap_width += offset_x;
        pixmap_height = MAX (layout_height / PANGO_SCALE, icon_height) + DRAG_ICON_LAYOUT_BORDER * 2;
    }
    else
    {
        pixmap_height = layout_height / PANGO_SCALE + DRAG_ICON_LAYOUT_BORDER * 2;
    }

    drawable = gdk_pixmap_new (widget->window,
                   pixmap_width  + 2,
                   pixmap_height + 2,
                   -1);

    gdk_draw_rectangle (drawable,
                widget->style->base_gc [GTK_WIDGET_STATE (widget)],
                TRUE,
                0, 0,
                pixmap_width + 1,
                pixmap_height + 1);


    if (priv->favicon != NULL)
    {
        gdk_draw_pixbuf (drawable,
                 widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
                 priv->favicon,
                 0, 0, 
                 1 + DRAG_ICON_LAYOUT_BORDER + DRAG_ICON_ICON_SPACING,
                 1 + DRAG_ICON_LAYOUT_BORDER + (pixmap_height - icon_height) / 2,
                 -1, -1,
                 GDK_RGB_DITHER_NONE, 0, 0);
    }

    gdk_draw_layout (drawable,
             widget->style->text_gc [GTK_WIDGET_STATE (widget)],
             1 + DRAG_ICON_LAYOUT_BORDER + offset_x,
             1 + DRAG_ICON_LAYOUT_BORDER,
             layout);

    gdk_draw_rectangle (drawable,
                widget->style->black_gc,
                FALSE,
                0, 0,
                pixmap_width + 1,
                pixmap_height + 1);

    g_object_unref (layout);

    g_free (address);
    g_free (title);
    g_string_free (text,TRUE);

    return drawable;
}

static void
favicon_drag_begin_cb (GtkWidget *widget,
               GdkDragContext *context,
               EphyLocationEntry *entry)
{
    GdkPixmap *pixmap;

    pixmap = favicon_create_drag_pixmap (entry, widget);

    if (pixmap != NULL)
    {
        gtk_drag_set_icon_pixmap (context,
                      gdk_drawable_get_colormap (pixmap),
                      pixmap, NULL, -2, -2);
        g_object_unref (pixmap);
    }
}

static void
favicon_drag_data_get_cb (GtkWidget *widget,
              GdkDragContext *context,
              GtkSelectionData *selection_data,
              guint info,
              guint32 time,
              EphyLocationEntry *entry)
{
    g_assert (widget != NULL);
    g_return_if_fail (context != NULL);

    ephy_dnd_drag_data_get (widget, context, selection_data,
        time, entry, each_url_get_data_binder);
}

static gboolean
lock_button_press_event_cb (GtkWidget *ebox,
                GdkEventButton *event,
                EphyLocationEntry *entry)
{
    if (event->type == GDK_BUTTON_PRESS && event->button == 1 /* left */)
    {
        g_signal_emit (entry, signals[LOCK_CLICKED], 0);

        return TRUE;
    }

    return FALSE;
}

static void
ephy_location_entry_construct_contents (EphyLocationEntry *entry)
{
    EphyLocationEntryPrivate *priv = entry->priv;
    GtkWidget *alignment;

    LOG ("EphyLocationEntry constructing contents %p", entry);

    alignment = gtk_alignment_new (0.0, 0.5, 1.0, 0.0);
    gtk_alignment_set_padding (GTK_ALIGNMENT (alignment), 0, 0, 1, 1);
    gtk_container_add (GTK_CONTAINER (entry), alignment);

    priv->icon_entry = EPHY_ICON_ENTRY (ephy_icon_entry_new ());
    gtk_container_add (GTK_CONTAINER (alignment),
               GTK_WIDGET (priv->icon_entry));

    priv->icon_ebox = gtk_event_box_new ();
    gtk_container_set_border_width (GTK_CONTAINER (priv->icon_ebox), 2);
    gtk_event_box_set_visible_window (GTK_EVENT_BOX (priv->icon_ebox), FALSE);
    gtk_widget_add_events (priv->icon_ebox, GDK_BUTTON_PRESS_MASK |
                            GDK_BUTTON_RELEASE_MASK |
                        GDK_POINTER_MOTION_HINT_MASK);
    gtk_drag_source_set (priv->icon_ebox, GDK_BUTTON1_MASK,
                 url_drag_types, G_N_ELEMENTS (url_drag_types),
                 GDK_ACTION_ASK | GDK_ACTION_COPY | GDK_ACTION_LINK);

    gtk_tooltips_set_tip (priv->tips, priv->icon_ebox,
                  _("Drag and drop this icon to create a link to this page"), NULL);

    priv->icon = gtk_image_new ();
    gtk_container_add (GTK_CONTAINER (priv->icon_ebox), priv->icon);

    ephy_icon_entry_pack_widget (priv->icon_entry, priv->icon_ebox, TRUE);

    priv->lock_ebox = gtk_event_box_new ();
    gtk_container_set_border_width (GTK_CONTAINER (priv->lock_ebox), 2);
    gtk_widget_add_events (priv->lock_ebox, GDK_BUTTON_PRESS_MASK);
    gtk_event_box_set_visible_window (GTK_EVENT_BOX (priv->lock_ebox), FALSE);

    priv->lock = gtk_image_new_from_stock (STOCK_LOCK_INSECURE,
                           GTK_ICON_SIZE_MENU);
    gtk_container_add (GTK_CONTAINER (priv->lock_ebox), priv->lock);

    ephy_icon_entry_pack_widget (priv->icon_entry, priv->lock_ebox, FALSE);

    g_signal_connect (priv->icon_ebox, "drag-data-get",
              G_CALLBACK (favicon_drag_data_get_cb), entry);
    g_signal_connect (priv->icon_ebox, "drag-begin",
              G_CALLBACK (favicon_drag_begin_cb), entry);

    g_signal_connect (priv->lock_ebox, "button-press-event",
              G_CALLBACK (lock_button_press_event_cb), entry);

    g_signal_connect (priv->icon_entry->entry, "populate_popup",
              G_CALLBACK (entry_populate_popup_cb), entry);
    g_signal_connect (priv->icon_entry->entry, "key-press-event",
              G_CALLBACK (entry_key_press_cb), entry);
    g_signal_connect (priv->icon_entry->entry, "button-press-event",
              G_CALLBACK (entry_button_press_cb), entry);
    g_signal_connect (priv->icon_entry->entry, "changed",
              G_CALLBACK (editable_changed_cb), entry);
    g_signal_connect (priv->icon_entry->entry, "drag-motion",
              G_CALLBACK (entry_drag_motion_cb), entry);
    g_signal_connect (priv->icon_entry->entry, "drag-drop",
              G_CALLBACK (entry_drag_drop_cb), entry);

    gtk_widget_show_all (alignment);
}

static void
ephy_location_entry_init (EphyLocationEntry *le)
{
    EphyLocationEntryPrivate *p;

    LOG ("EphyLocationEntry initialising %p", le);

    p = EPHY_LOCATION_ENTRY_GET_PRIVATE (le);
    le->priv = p;

    p->user_changed = TRUE;

    p->tips = gtk_tooltips_new ();
    g_object_ref_sink (p->tips);

    ephy_location_entry_construct_contents (le);

    gtk_tool_item_set_expand (GTK_TOOL_ITEM (le), TRUE);
}

GtkWidget *
ephy_location_entry_new (void)
{
    return GTK_WIDGET (g_object_new (EPHY_TYPE_LOCATION_ENTRY, NULL));
}

static gint
sort_func (GtkTreeModel *model,
       GtkTreeIter *a,
       GtkTreeIter *b,
       gpointer data)
{
    gint valuea, valueb;
    EphyLocationEntry *le = EPHY_LOCATION_ENTRY (data);

    gtk_tree_model_get (model, a,
                le->priv->relevance_col, &valuea, -1);
    gtk_tree_model_get (model, b,
                le->priv->relevance_col, &valueb, -1);

    return valueb - valuea;
}

void
ephy_location_entry_set_completion (EphyLocationEntry *le,
                    GtkTreeModel *model,
                    guint text_col,
                    guint action_col,
                    guint keywords_col,
                    guint relevance_col)
{
    EphyLocationEntryPrivate *priv = le->priv;
    GtkTreeModel *sort_model;
    GtkEntryCompletion *completion;
    GtkCellRenderer *cell;

    le->priv->text_col = text_col;
    le->priv->action_col = action_col;
    le->priv->keywords_col = keywords_col;
    le->priv->relevance_col = relevance_col;

    sort_model = gtk_tree_model_sort_new_with_model (model);
    g_object_unref (model);
    gtk_tree_sortable_set_default_sort_func
        (GTK_TREE_SORTABLE (sort_model),
         sort_func, le, NULL);

    completion = gtk_entry_completion_new ();
    gtk_entry_completion_set_model (completion, sort_model);
    g_object_unref (sort_model);
    gtk_entry_completion_set_match_func (completion, completion_func, le, NULL);
    g_signal_connect (completion, "match_selected",
              G_CALLBACK (match_selected_cb), le);

    cell = gtk_cell_renderer_text_new ();
    gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (completion),
                    cell, TRUE);
    gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (completion),
                       cell, "text", text_col);

    gtk_entry_set_completion (GTK_ENTRY (priv->icon_entry->entry), completion);
    g_object_unref (completion);
}

void
ephy_location_entry_set_location (EphyLocationEntry *entry,
                  const char *address,
                  const char *typed_address)
{
    EphyLocationEntryPrivate *priv = entry->priv;
    GtkClipboard *clipboard;
    const char *text;
    char* selection = NULL;
    int start, end;

    g_return_if_fail (address != NULL);

        /* Setting a new text will clear the clipboard. This makes it impossible
     * to copy&paste from the location entry of one tab into another tab, see
     * bug #155824. So we save the selection iff the clipboard was owned by
     * the location entry.
     */
    if (GTK_WIDGET_REALIZED (GTK_WIDGET (priv->icon_entry)))
    {
        GtkWidget *gtkentry = priv->icon_entry->entry;

        clipboard = gtk_widget_get_clipboard (gtkentry,
                              GDK_SELECTION_PRIMARY);
        g_return_if_fail (clipboard != NULL);

        if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (gtkentry) &&
            gtk_editable_get_selection_bounds (GTK_EDITABLE (gtkentry),
                                   &start, &end))
        {
            selection = gtk_editable_get_chars (GTK_EDITABLE (gtkentry),
                                start, end);
        }
    }

    if (typed_address != NULL)
    {
        text = typed_address;
    }
    else if (address != NULL && strcmp (address, "about:blank") != 0)
    {
        text = address;
    }
    else
    {
        text = "";
    }

    /* First record the new hash, then update the entry text */
    priv->hash = g_str_hash (address);

    priv->user_changed = FALSE;
    gtk_entry_set_text (GTK_ENTRY (priv->icon_entry->entry), text);
    priv->user_changed = TRUE;

    /* We need to call update_address_state() here, as the 'changed' signal
     * may not get called if the user has typed in the exact correct url */
    update_address_state (entry);
    update_favicon (entry);

    /* Now restore the selection.
     * Note that it's not owned by the entry anymore!
     */
    if (selection != NULL)
    {
        gtk_clipboard_set_text (gtk_clipboard_get (GDK_SELECTION_PRIMARY),
                    selection, strlen (selection));
        g_free (selection);
    }
}

const char *
ephy_location_entry_get_location (EphyLocationEntry *entry)
{
    EphyLocationEntryPrivate *priv = entry->priv;

    return gtk_entry_get_text (GTK_ENTRY (priv->icon_entry->entry));
}

gboolean
ephy_location_entry_reset (EphyLocationEntry *entry)
{
    EphyLocationEntryPrivate *priv = entry->priv;
    const char *text, *old_text;
    char *url = NULL;
    gboolean retval;

    g_signal_emit (entry, signals[GET_LOCATION], 0, &url);
    text = url != NULL ? url : "";
    old_text = gtk_entry_get_text (GTK_ENTRY (priv->icon_entry->entry));
    old_text = old_text != NULL ? old_text : "";

    retval = g_str_hash (text) != g_str_hash (old_text);

    ephy_location_entry_set_location (entry, text, NULL);
    g_free (url);

    return retval;
}

void
ephy_location_entry_activate (EphyLocationEntry *entry)
{
    EphyLocationEntryPrivate *priv = entry->priv;
    GtkWidget *toplevel;

    toplevel = gtk_widget_get_toplevel (GTK_WIDGET (entry));

    gtk_editable_select_region (GTK_EDITABLE(priv->icon_entry->entry),
                    0, -1);
        gtk_window_set_focus (GTK_WINDOW(toplevel),
                              priv->icon_entry->entry);
}

GtkWidget *
ephy_location_entry_get_entry (EphyLocationEntry *entry)
{
    EphyLocationEntryPrivate *priv = entry->priv;

    return priv->icon_entry->entry;
}

void
ephy_location_entry_set_favicon (EphyLocationEntry *entry,
                 GdkPixbuf *pixbuf)
{
    EphyLocationEntryPrivate *priv = entry->priv;

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

    priv->favicon = pixbuf ? g_object_ref (pixbuf) : NULL;

    update_favicon (entry);
}

void
ephy_location_entry_set_secure (EphyLocationEntry *entry,
                gboolean secure)
{
    EphyLocationEntryPrivate *priv = entry->priv;
    GtkWidget *widget = GTK_WIDGET (entry);
    GtkWidget *gentry = ephy_icon_entry_get_entry (entry->priv->icon_entry);

    priv->secure = secure;

    /* We have to set the colour of the GtkEntry in the EphyIconEntry */
    if (priv->secure && priv->apply_colours)
    {
        gtk_widget_modify_text (gentry, GTK_STATE_NORMAL, &priv->secure_fg_colour);
        gtk_widget_modify_base (gentry, GTK_STATE_NORMAL, &priv->secure_bg_colour);
    }
    else
    {
        gtk_widget_modify_text (gentry, GTK_STATE_NORMAL, NULL);
        gtk_widget_modify_base (gentry, GTK_STATE_NORMAL, NULL);
    }

    gtk_widget_queue_draw (widget);
}

void
ephy_location_entry_set_show_lock (EphyLocationEntry *entry,
                   gboolean show_lock)
{
    EphyLocationEntryPrivate *priv = entry->priv;

    g_object_set (priv->lock_ebox, "visible", show_lock, NULL);
}

void
ephy_location_entry_set_lock_stock (EphyLocationEntry *entry,
                    const char *stock_id)

{
    EphyLocationEntryPrivate *priv = entry->priv;

    gtk_image_set_from_stock (GTK_IMAGE (priv->lock), stock_id,
                  GTK_ICON_SIZE_MENU);
}

void
ephy_location_entry_set_lock_tooltip (EphyLocationEntry *entry,
                      const char *tooltip)
{
    EphyLocationEntryPrivate *priv = entry->priv;

    gtk_tooltips_set_tip (priv->tips, priv->lock_ebox, tooltip, NULL);
}