/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Copyright © 2002  Ricardo Fernández Pascual
 *  Copyright © 2003, 2004  Marco Pesenti Gritti
 *  Copyright © 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 "ephy-gui.h"

#include <glib/gi18n.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtk.h>

#include <string.h>

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

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

	GtkCellRenderer *extracell;
	GRegex *regex;

	char *before_completion;
	char *saved_text;

	guint text_col;
	guint action_col;
	guint keywords_col;
	guint relevance_col;
	guint url_col;
	guint extra_col;
	guint favicon_col;

	guint hash;

	guint user_changed : 1;
	guint can_redo : 1;
	guint block_update : 1;
	guint original_address : 1;
	guint secure : 1;
	guint apply_colours : 1;
	guint needs_reset : 1;
};

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 const GdkColor fallback_fg_colour = { 0, 0, 0, 0 }; /* black */

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

static void extracell_data_func (GtkCellLayout *cell_layout,
				GtkCellRenderer *cell,
				GtkTreeModel *tree_model,
				GtkTreeIter *iter,
				gpointer data);

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))
	{
		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 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;
	GdkColor title_fg_colour;
	char *theme;
	gboolean is_a11y_theme;

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

	title_fg_colour = widget->style->text[GTK_STATE_INSENSITIVE];
	g_object_set (entry->priv->extracell, 
			"foreground-gdk", &title_fg_colour,
			"foreground-set", TRUE,
			NULL);

	settings = gtk_settings_get_for_screen (gtk_widget_get_screen (widget));
	g_object_get (settings, "gtk-theme-name", &theme, NULL);
	is_a11y_theme = strstr (theme, "HighContrast") != NULL ||
			strstr (theme, "LowContrast") != NULL;
	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
	{
		priv->secure_fg_colour = fallback_fg_colour;
	}

	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;
	
	g_free (priv->saved_text);

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

	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);

	parent_class = g_type_class_peek_parent (klass);

	object_class->finalize = ephy_location_entry_finalize;

	widget_class->style_set = ephy_location_entry_style_set;

	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
	{
		/* Here we could consider using fallback favicon that matches
		 * the page MIME type, though text/html should be good enough
		 * most of the time. See #337140
		 */
		gtk_image_set_from_icon_name (image,
					      "text-html",
					      GTK_ICON_SIZE_MENU);
	}
}

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

	update_address_state (entry);

	if (priv->block_update == TRUE) 
		return;
	else
	{
		priv->user_changed = TRUE;
		priv->can_redo = FALSE;
	}	
	
	if (priv->regex)
	{
		g_regex_unref (priv->regex);
		priv->regex = NULL;
	}
	
	text = gtk_entry_get_text (GTK_ENTRY (editable));

	if (g_str_has_prefix (text, "re:"))
		pattern = g_strdup (text+3);
	else
		pattern = g_regex_escape_string (text, -1);

	priv->regex = g_regex_new (pattern, 
				G_REGEX_CASELESS | G_REGEX_OPTIMIZE, 
				G_REGEX_MATCH_NOTEMPTY, NULL);

	g_free (pattern);

	update_favicon (entry);

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

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_Escape && state == 0)
	{
		ephy_location_entry_reset_internal (lentry, TRUE);
		/* don't return TRUE since we want to cancel the autocompletion popup too */
	}

	return FALSE;
}

static gboolean
entry_key_press_after_cb (GtkEntry *entry,
			  GdkEventKey *event,
			  EphyLocationEntry *lentry)
{
	EphyLocationEntryPrivate *priv = lentry->priv;

	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);

		priv->needs_reset = TRUE;
		g_signal_emit_by_name (entry, "activate");

		return TRUE;
	}
	
	if ((event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
	    && state == 0)
	{
		/* If we are focusing the entry, with the cursor at the end of it
		 * we emit the changed signal, so that the completion popup appears */
		const char *string;
		
		string = gtk_entry_get_text (entry);
		if (gtk_editable_get_position (GTK_EDITABLE (entry)) == strlen (string))
		{
			g_signal_emit_by_name (entry, "changed", 0);
			return TRUE;
		}
	}

	return FALSE;
}

static void
entry_activate_after_cb (GtkEntry *entry,
			 EphyLocationEntry *lentry)
{
	EphyLocationEntryPrivate *priv = lentry->priv;
	
	priv->user_changed = FALSE;

	if (priv->needs_reset)
	{
		ephy_location_entry_reset_internal (lentry, TRUE);
		priv->needs_reset = FALSE;
	}
}

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

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

	ephy_gui_get_current_event (NULL, &state, NULL);

	priv->needs_reset = (state == GDK_CONTROL_MASK ||
			     state == (GDK_CONTROL_MASK | GDK_SHIFT_MASK));

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

	g_free (item);

	return TRUE;
}

static void
action_activated_after_cb (GtkEntryCompletion *completion,
			   gint index,
			   EphyLocationEntry *lentry)
{
	guint state, button;

	ephy_gui_get_current_event (NULL, &state, &button);
	if ((state == GDK_CONTROL_MASK ||
	     state == (GDK_CONTROL_MASK | GDK_SHIFT_MASK)) ||
	    button == 2)
	{
		ephy_location_entry_reset_internal (lentry, 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->block_update = TRUE;
	gtk_entry_set_text (GTK_ENTRY (priv->icon_entry->entry), "");
	priv->block_update = FALSE;
	priv->user_changed = TRUE;
}

static void
entry_redo_activate_cb (GtkMenuItem *item,
			EphyLocationEntry *entry)
{
	ephy_location_entry_undo_reset (entry);
}

static void
entry_undo_activate_cb (GtkMenuItem *item,
			EphyLocationEntry *entry)
{
	ephy_location_entry_reset_internal (entry, FALSE);
}

static void
entry_populate_popup_cb (GtkEntry *entry,
			 GtkMenu *menu,
			 EphyLocationEntry *lentry)
{
	EphyLocationEntryPrivate *priv = lentry->priv;
	GtkWidget *image;
	GtkWidget *clear_menuitem, *undo_menuitem, *redo_menuitem, *separator;
	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.)
	 */
	clear_menuitem = gtk_image_menu_item_new_with_mnemonic (_("Cl_ear"));
	gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (clear_menuitem), image);
	g_signal_connect (clear_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 (clear_menuitem, is_editable);
	gtk_widget_show (clear_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), clear_menuitem, pos - 1);
	
	undo_menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_UNDO, NULL);
	gtk_widget_set_sensitive (undo_menuitem, priv->user_changed);
	g_signal_connect (undo_menuitem, "activate",
			  G_CALLBACK (entry_undo_activate_cb), lentry);
	gtk_widget_show (undo_menuitem);
	gtk_menu_shell_insert (GTK_MENU_SHELL (menu), undo_menuitem, 0);
	
	redo_menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_REDO, NULL);
	gtk_widget_set_sensitive (redo_menuitem, priv->can_redo);
	g_signal_connect (redo_menuitem, "activate",
			  G_CALLBACK (entry_redo_activate_cb), lentry);
	gtk_widget_show (redo_menuitem);
	gtk_menu_shell_insert (GTK_MENU_SHELL (menu), redo_menuitem, 1);
	
	separator = gtk_separator_menu_item_new ();
	gtk_widget_show (separator);
	gtk_menu_shell_insert (GTK_MENU_SHELL (menu), separator, 2);
}

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
icon_button_press_event_cb (GtkWidget *ebox,
			    GdkEventButton *event,
			    EphyLocationEntry *entry)
{
	guint state = event->state & gtk_accelerator_get_default_mod_mask ();

	if (event->type == GDK_BUTTON_PRESS && 
	    event->button == 1 && 
	    state == 0 /* left */)
	{
		GtkWidget *toplevel;
		EphyLocationEntryPrivate *priv = entry->priv;
		
		toplevel = gtk_widget_get_toplevel (GTK_WIDGET (entry));
		gtk_window_set_focus (GTK_WINDOW(toplevel),
			      	      priv->icon_entry->entry);

		gtk_editable_select_region (GTK_EDITABLE (priv->icon_entry->entry), 
					    0, -1);

		return TRUE;
	}

	return FALSE;
}

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);
	g_signal_connect (priv->icon_ebox, "button-press-event",
			  G_CALLBACK (icon_button_press_event_cb), entry);

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

	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_after (priv->icon_entry->entry, "key-press-event",
				G_CALLBACK (entry_key_press_after_cb), entry);
	g_signal_connect_after (priv->icon_entry->entry, "activate",
				G_CALLBACK (entry_activate_after_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 = FALSE;
	p->block_update = FALSE;
	p->saved_text = NULL;
	p->regex = NULL;
	
	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 gboolean
cursor_on_match_cb  (GtkEntryCompletion *completion,
		     GtkTreeModel *model,
		     GtkTreeIter *iter,
		     EphyLocationEntry *le)
{
	char *item = NULL;
	GtkWidget *entry;

	gtk_tree_model_get (model, iter,
			    le->priv->url_col,
			    &item, -1);
	entry = gtk_entry_completion_get_entry (completion);

	gtk_entry_set_text (GTK_ENTRY (entry), item);
	gtk_editable_set_position (GTK_EDITABLE (entry), -1);

	g_free (item);

	return TRUE;
}

static void
extracell_data_func (GtkCellLayout *cell_layout,
			GtkCellRenderer *cell,
			GtkTreeModel *tree_model,
			GtkTreeIter *iter,
			gpointer data)
{
	char *cdata;
	GValue visible = { 0, };
	GValue text = { 0, };
	EphyLocationEntryPrivate *priv;

	priv = EPHY_LOCATION_ENTRY (data)->priv;

	gtk_tree_model_get (tree_model, iter, priv->extra_col, &cdata, -1);

	g_value_init (&text, G_TYPE_STRING);
	g_value_init (&visible, G_TYPE_BOOLEAN);
	
	g_value_take_string (&text, cdata);
	g_value_set_boolean (&visible, (cdata != NULL));

	g_object_set_property (G_OBJECT (cell), "text", &text);
	g_object_set_property (G_OBJECT (cell), "visible", &visible);
	
	g_value_unset (&text);
	g_value_unset (&visible);
}

void
ephy_location_entry_set_match_func (EphyLocationEntry *le, 
				GtkEntryCompletionMatchFunc match_func,
				gpointer user_data,
				GDestroyNotify notify)
{
	EphyLocationEntryPrivate *priv = le->priv;
	GtkEntryCompletion *completion;
	
	completion = gtk_entry_get_completion (GTK_ENTRY (priv->icon_entry->entry));
	gtk_entry_completion_set_match_func (completion, match_func, user_data, notify);
}

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

	le->priv->text_col = text_col;
	le->priv->action_col = action_col;
	le->priv->keywords_col = keywords_col;
	le->priv->relevance_col = relevance_col;
	le->priv->url_col = url_col;
	le->priv->extra_col = extra_col;
	le->priv->favicon_col = favicon_col;

	sort_model = gtk_tree_model_sort_new_with_model (model);

	g_object_unref (model);
	gtk_tree_sortable_set_sort_column_id 
			(GTK_TREE_SORTABLE (sort_model),
			 le->priv->relevance_col,
			 GTK_SORT_DESCENDING);

	completion = gtk_entry_completion_new ();
	gtk_entry_completion_set_model (completion, sort_model);
	g_object_unref (sort_model);
	g_signal_connect (completion, "match-selected",
			  G_CALLBACK (match_selected_cb), le);
	g_signal_connect_after (completion, "action-activated",
				G_CALLBACK (action_activated_after_cb), le);

	iconcell = gtk_cell_renderer_pixbuf_new ();

	gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (completion),
				    iconcell, FALSE);
	gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (completion),
				       iconcell, "pixbuf", favicon_col);

	cell = gtk_cell_renderer_text_new ();
	g_object_set (cell, 
			"ellipsize", PANGO_ELLIPSIZE_END,
			"ellipsize-set", TRUE,
			NULL);
	gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (completion),
				    cell, TRUE);
	gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (completion),
				       cell, "text", text_col);

	le->priv->extracell = gtk_cell_renderer_text_new ();
	g_object_set (le->priv->extracell, 
			"ellipsize", PANGO_ELLIPSIZE_END,
			"ellipsize-set", TRUE,
			"alignment", PANGO_ALIGN_LEFT,
			NULL);

	gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (completion),
				  le->priv->extracell, TRUE);
	
	gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (completion),
					le->priv->extracell, extracell_data_func, 
					le,
					NULL);

	g_object_set (completion, "inline-selection", TRUE, NULL);
	g_signal_connect (completion, "cursor-on-match",
			  G_CALLBACK (cursor_on_match_cb), le);

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

	/* 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);
	}
}

gboolean
ephy_location_entry_get_can_undo (EphyLocationEntry *entry)
{
	EphyLocationEntryPrivate *priv = entry->priv;
	
	return priv->user_changed;
}

gboolean
ephy_location_entry_get_can_redo (EphyLocationEntry *entry)
{
	EphyLocationEntryPrivate *priv = entry->priv;
	
	return priv->can_redo;
}

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

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

static gboolean
ephy_location_entry_reset_internal (EphyLocationEntry *entry,
				    gboolean notify)
{
	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 : "";

	g_free (priv->saved_text);
	priv->saved_text = g_strdup (old_text);
	priv->can_redo = TRUE;

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

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

	if (notify)
	{
		g_signal_emit (entry, signals[USER_CHANGED], 0);
	}
	
	priv->user_changed = FALSE;

	return retval;
}

void
ephy_location_entry_undo_reset (EphyLocationEntry *entry)
{
	EphyLocationEntryPrivate *priv = entry->priv;
	
	gtk_entry_set_text (GTK_ENTRY (priv->icon_entry->entry), priv->saved_text);
	priv->can_redo = FALSE;
	priv->user_changed = TRUE;
}

gboolean
ephy_location_entry_reset (EphyLocationEntry *entry)
{
	return ephy_location_entry_reset_internal (entry, FALSE);
}

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_widget_set_tooltip_text (priv->lock_ebox, tooltip);
}

GRegex *
ephy_location_entry_get_regex (EphyLocationEntry *entry)
{
	EphyLocationEntryPrivate *priv = entry->priv;
	
	return priv->regex;
}
