/claws-mail-3.8.1/src/mimeview.c

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/*
 * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
 * Copyright (C) 1999-2012 Hiroyuki Yamamoto and the Claws Mail team
 *
 * 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
 * 
 */

#ifdef HAVE_CONFIG_H
#  include "config.h"
#endif

#include "defs.h"

#include <glib.h>
#include <glib/gi18n.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtk.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>

#ifndef HAVE_APACHE_FNMATCH
/* kludge: apache's fnmatch clashes with <regex.h>, don't include
 * fnmatch.h */
#include <fnmatch.h>
#endif

#include "main.h"
#include "mimeview.h"
#include "textview.h"
#include "procmime.h"
#include "summaryview.h"
#include "menu.h"
#include "filesel.h"
#include "alertpanel.h"
#include "inputdialog.h"
#include "utils.h"
#include "gtkutils.h"
#include "prefs_common.h"
#include "procheader.h"
#include "stock_pixmap.h"
#include "gtk/gtkvscrollbutton.h"
#include "gtk/logwindow.h"
#include "timing.h"

#ifdef MAEMO
#include <libosso.h>
#ifndef CHINOOK
#include <osso-mime.h>
#else
#include <hildon-mime.h>
#endif
#endif

typedef enum
{
	COL_MIMETYPE = 0,
	COL_SIZE     = 1,
	COL_NAME     = 2,
	COL_DATA     = 3,
} MimeViewColumnPos;

#define N_MIMEVIEW_COLS	4

static void mimeview_set_multipart_tree		(MimeView	*mimeview,
						 MimeInfo	*mimeinfo,
						 GtkTreeIter	*parent);
static void mimeview_show_message_part		(MimeView	*mimeview,
						 MimeInfo	*partinfo);
static void mimeview_change_view_type		(MimeView	*mimeview,
						 MimeViewType	 type);
static gchar *mimeview_get_filename_for_part		(MimeInfo	*partinfo,
						 const gchar	*basedir,
						 gint		 number);
static gboolean mimeview_write_part		(const gchar	*filename,
						 MimeInfo	*partinfo);

static void mimeview_selected		(GtkTreeSelection	*selection,
					 MimeView	*mimeview);
static gint mimeview_button_pressed	(GtkWidget	*widget,
					 GdkEventButton	*event,
					 MimeView	*mimeview);
static gint mimeview_key_pressed	(GtkWidget	*widget,
					 GdkEventKey	*event,
					 MimeView	*mimeview);

static void mimeview_drag_data_get      (GtkWidget	  *widget,
					 GdkDragContext   *drag_context,
					 GtkSelectionData *selection_data,
					 guint		   info,
					 guint		   time,
					 MimeView	  *mimeview);

static gboolean mimeview_scrolled	(GtkWidget	*widget,
					 GdkEventScroll	*event,
					 MimeView	*mimeview);
static void mimeview_display_as_text	(MimeView	*mimeview);
static void mimeview_save_as		(MimeView	*mimeview);
static void mimeview_save_all		(MimeView	*mimeview);
static void mimeview_launch		(MimeView	*mimeview,
					 MimeInfo	*partinfo);
#ifndef G_OS_WIN32
static void mimeview_open_with		(MimeView	*mimeview);
static void mimeview_open_part_with	(MimeView	*mimeview,
					 MimeInfo	*partinfo,
					 gboolean	 automatic);
#endif
static void mimeview_send_to		(MimeView	*mimeview,
					 MimeInfo	*partinfo);
static void mimeview_select_next_part	(MimeView	*mimeview);
static void mimeview_select_prev_part	(MimeView	*mimeview);
static void mimeview_view_file		(const gchar	*filename,
					 MimeInfo	*partinfo,
					 const gchar	*cmd,
					 MimeView  	*mimeview);
static gboolean icon_clicked_cb		(GtkWidget 	*button, 
					 GdkEventButton	*event, 
					 MimeView 	*mimeview);
static void icon_selected               (MimeView       *mimeview, 
					 gint            num, 
					 MimeInfo       *partinfo);
static gint icon_key_pressed            (GtkWidget      *button, 
					 GdkEventKey    *event,
					 MimeView       *mimeview);
static void icon_list_append_icon 	(MimeView 	*mimeview, 
					 MimeInfo 	*mimeinfo);
static void icon_list_create		(MimeView 	*mimeview, 
					 MimeInfo 	*mimeinfo);
static void icon_list_clear		(MimeView	*mimeview);
static void icon_list_toggle_by_mime_info (MimeView	*mimeview,
					   MimeInfo	*mimeinfo);
static void ctree_size_allocate_cb	(GtkWidget	*widget,
					 GtkAllocation	*allocation,
					 MimeView	*mimeview);
static gint mime_toggle_button_cb(GtkWidget *button, GdkEventButton *event,
				    MimeView *mimeview);
static gboolean part_button_pressed	(MimeView 	*mimeview, 
					 GdkEventButton *event, 
					 MimeInfo 	*partinfo);
static void icon_scroll_size_allocate_cb(GtkWidget 	*widget, 
					 GtkAllocation  *layout_size, 
					 MimeView 	*mimeview);
static MimeInfo *mimeview_get_part_to_use(MimeView *mimeview);
static const gchar *get_part_name(MimeInfo *partinfo);
static const gchar *get_part_description(MimeInfo *partinfo);

static void mimeview_launch_cb(GtkAction *action, gpointer data)
{
	MimeView *mimeview = (MimeView *)data;
	mimeview_launch(mimeview, mimeview_get_part_to_use(mimeview));
}

#ifndef G_OS_WIN32
static void mimeview_open_with_cb(GtkAction *action, gpointer data)
{
	mimeview_open_with((MimeView *)data);
}
#endif

static void mimeview_send_to_cb(GtkAction *action, gpointer data)
{
	MimeView *mimeview = (MimeView *)data;	
	mimeview_send_to(mimeview, mimeview_get_part_to_use(mimeview));
}

static void mimeview_display_as_text_cb(GtkAction *action, gpointer data)
{
	mimeview_display_as_text((MimeView *)data);
}

static void mimeview_save_as_cb(GtkAction *action, gpointer data)
{
	mimeview_save_as((MimeView *)data);
}

static void mimeview_save_all_cb(GtkAction *action, gpointer data)
{
	mimeview_save_all((MimeView *)data);
}

static void mimeview_select_next_part_cb(GtkAction *action, gpointer data)
{
	mimeview_select_next_part((MimeView *)data);
}

static void mimeview_select_prev_part_cb(GtkAction *action, gpointer data)
{
	mimeview_select_prev_part((MimeView *)data);
}

static GtkActionEntry mimeview_menu_actions[] = {
	{ "MimeView", NULL, "MimeView" },
	{ "MimeView/Open", NULL, N_("_Open (l)"), NULL, "Open MIME part", G_CALLBACK(mimeview_launch_cb) },
#if (!defined MAEMO && !defined G_OS_WIN32)
	{ "MimeView/OpenWith", NULL, N_("Open _with (o)..."), NULL, "Open MIME part with...", G_CALLBACK(mimeview_open_with_cb) },
#endif
	{ "MimeView/SendTo", NULL, N_("Send to..."), NULL, "Send to", G_CALLBACK(mimeview_send_to_cb) },
	{ "MimeView/DisplayAsText", NULL, N_("_Display as text (t)"), NULL, "Display as text", G_CALLBACK(mimeview_display_as_text_cb) },
	{ "MimeView/SaveAs", NULL, N_("_Save as (y)..."), NULL, "Save as", G_CALLBACK(mimeview_save_as_cb) },
	{ "MimeView/SaveAll", NULL, N_("Save _all..."), NULL, "Save all parts", G_CALLBACK(mimeview_save_all_cb) },
	{ "MimeView/NextPart", NULL, N_("Next part (a)"), NULL, "Next part", G_CALLBACK(mimeview_select_next_part_cb) },
	{ "MimeView/PrevPart", NULL, N_("Previous part (z)"), NULL, "Previous part", G_CALLBACK(mimeview_select_prev_part_cb) }
};

static GtkTargetEntry mimeview_mime_types[] =
{
	{"text/uri-list", 0, 0}
};

GSList *mimeviewer_factories;
GSList *mimeviews;

static GdkCursor *hand_cursor = NULL;

static gboolean mimeview_visi_notify(GtkWidget *widget,
				       GdkEventVisibility *event,
				       MimeView *mimeview)
{
	gdk_window_set_cursor(gtk_widget_get_window(widget), hand_cursor);
	return FALSE;
}

static gboolean mimeview_leave_notify(GtkWidget *widget,
				      GdkEventCrossing *event,
				      MimeView *mimeview)
{
	gdk_window_set_cursor(gtk_widget_get_window(widget), NULL);
	return FALSE;
}

static gboolean mimeview_enter_notify(GtkWidget *widget,
				      GdkEventCrossing *event,
				      MimeView *mimeview)
{
	gdk_window_set_cursor(gtk_widget_get_window(widget), hand_cursor);
	return FALSE;
}

MimeView *mimeview_create(MainWindow *mainwin)
{
	MimeView *mimeview;

	GtkWidget *paned;
	GtkWidget *scrolledwin;
	GtkWidget *ctree;
	GtkWidget *mime_notebook;
	GtkWidget *popupmenu;
	GtkWidget *ctree_mainbox;
	GtkWidget *vbox;
	GtkWidget *mime_toggle;
	GtkWidget *icon_mainbox;
	GtkWidget *icon_scroll;
	GtkWidget *icon_vbox;
	GtkWidget *arrow;
	GtkWidget *scrollbutton;
	GtkWidget *hbox;
	NoticeView *siginfoview;
	GtkRequisition r;
	GtkTreeStore *model;
	GtkCellRenderer *renderer;
	GtkTreeViewColumn *column;
	GtkTreeSelection *selection;

	gchar *titles[N_MIMEVIEW_COLS];
	gint cols;

	if (!hand_cursor)
		hand_cursor = gdk_cursor_new(GDK_HAND2);

	debug_print("Creating MIME view...\n");
	mimeview = g_new0(MimeView, 1);

	titles[COL_MIMETYPE] = _("MIME Type");
	titles[COL_SIZE]     = _("Size");
	titles[COL_NAME]     = _("Name");

	scrolledwin = gtk_scrolled_window_new(NULL, NULL);
	gtk_widget_show(scrolledwin);
	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
				       GTK_POLICY_AUTOMATIC,
				       GTK_POLICY_AUTOMATIC);
				       
	model = gtk_tree_store_new(N_MIMEVIEW_COLS,
				   G_TYPE_STRING,
				   G_TYPE_STRING,
				   G_TYPE_STRING,
				   G_TYPE_POINTER);

	ctree = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
	gtk_tree_view_set_enable_search(GTK_TREE_VIEW(ctree), FALSE);
	gtk_tree_view_set_rules_hint(GTK_TREE_VIEW(ctree),
					prefs_common.use_stripes_everywhere);
	gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(ctree),
					prefs_common.show_col_headers);

	renderer = gtk_cell_renderer_text_new();
	cols = gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(ctree),
					-1, titles[COL_MIMETYPE],renderer,
					"text", COL_MIMETYPE, NULL);
	column = gtk_tree_view_get_column(GTK_TREE_VIEW(ctree), cols-1);
							   
	renderer = gtk_cell_renderer_text_new();
#if(GTK_CHECK_VERSION(2,18,0))
	gtk_cell_renderer_set_alignment(renderer, 1, 0.5);
#endif
	cols = gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(ctree),
					-1, titles[COL_SIZE], renderer,
					"text", COL_SIZE, NULL);
	column = gtk_tree_view_get_column(GTK_TREE_VIEW(ctree), cols-1);
	gtk_tree_view_column_set_alignment(GTK_TREE_VIEW_COLUMN(column), 1);
	
	renderer = gtk_cell_renderer_text_new();
	cols = gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(ctree),
					-1, titles[COL_NAME], renderer,
					"text", COL_NAME, NULL);
	column = gtk_tree_view_get_column(GTK_TREE_VIEW(ctree), cols-1);
	gtk_tree_view_column_set_expand(GTK_TREE_VIEW_COLUMN(column), TRUE);

	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(ctree));
	gtk_tree_selection_set_mode(selection, GTK_SELECTION_BROWSE);

	gtk_widget_show(ctree);
	gtk_container_add(GTK_CONTAINER(scrolledwin), ctree);
	gtk_drag_source_set(ctree, GDK_BUTTON1_MASK|GDK_BUTTON3_MASK, 
			    mimeview_mime_types, 1, GDK_ACTION_COPY);

	g_signal_connect(G_OBJECT(selection), "changed",
			 G_CALLBACK(mimeview_selected), mimeview);
	g_signal_connect(G_OBJECT(ctree), "button_release_event",
			 G_CALLBACK(mimeview_button_pressed), mimeview);
	g_signal_connect(G_OBJECT(ctree), "key_press_event",
			 G_CALLBACK(mimeview_key_pressed), mimeview);
	g_signal_connect(G_OBJECT(ctree), "drag_data_get",
			 G_CALLBACK(mimeview_drag_data_get), mimeview);

	mime_notebook = gtk_notebook_new();
        gtk_widget_show(mime_notebook);
        gtkut_widget_set_can_focus(mime_notebook, FALSE);
        gtk_notebook_set_show_tabs(GTK_NOTEBOOK(mime_notebook), FALSE);
        gtk_notebook_set_show_border(GTK_NOTEBOOK(mime_notebook), FALSE);
	
	icon_vbox = gtk_vbox_new(FALSE, 2);
	gtk_widget_show(icon_vbox);
	icon_scroll = gtk_layout_new(NULL, NULL);
	gtk_widget_show(icon_scroll);
	gtk_layout_put(GTK_LAYOUT(icon_scroll), icon_vbox, 0, 0);
	scrollbutton = gtk_vscrollbutton_new(gtk_layout_get_vadjustment(GTK_LAYOUT(icon_scroll)));
	gtk_widget_show(scrollbutton);

	g_signal_connect(G_OBJECT(icon_scroll), "scroll_event",
			 G_CALLBACK(mimeview_scrolled), mimeview);

    	mime_toggle = gtk_event_box_new();
	gtk_event_box_set_visible_window(GTK_EVENT_BOX(mime_toggle), FALSE);

	g_signal_connect(G_OBJECT(mime_toggle), "motion-notify-event",
			 G_CALLBACK(mimeview_visi_notify), mimeview);
	g_signal_connect(G_OBJECT(mime_toggle), "leave-notify-event",
			 G_CALLBACK(mimeview_leave_notify), mimeview);
	g_signal_connect(G_OBJECT(mime_toggle), "enter-notify-event",
			 G_CALLBACK(mimeview_enter_notify), mimeview);

	gtk_container_set_border_width(GTK_CONTAINER(mime_toggle), 2);
	gtk_widget_show(mime_toggle);
	mimeview->ctree_mode = FALSE;
	arrow = gtk_arrow_new(GTK_ARROW_LEFT, GTK_SHADOW_NONE);
	gtk_widget_show(arrow);
	gtk_widget_size_request(arrow, &r);
	gtk_container_add(GTK_CONTAINER(mime_toggle), arrow);
	g_signal_connect(G_OBJECT(mime_toggle), "button_release_event", 
			 G_CALLBACK(mime_toggle_button_cb), mimeview);

	icon_mainbox = gtk_vbox_new(FALSE, 0);
	gtk_widget_show(icon_mainbox);
	gtk_widget_set_size_request(icon_mainbox, 32, -1);
	gtk_box_pack_start(GTK_BOX(icon_mainbox), mime_toggle, FALSE, FALSE, 0);
	gtk_box_pack_start(GTK_BOX(icon_mainbox), icon_scroll, TRUE, TRUE, 3);
	gtk_box_pack_end(GTK_BOX(icon_mainbox), scrollbutton, FALSE, FALSE, 0);
	g_signal_connect(G_OBJECT(icon_mainbox), "size_allocate", 
			 G_CALLBACK(icon_scroll_size_allocate_cb), mimeview);
	
	ctree_mainbox = gtk_hbox_new(FALSE, 0);	
	gtk_box_pack_start(GTK_BOX(ctree_mainbox), scrolledwin, TRUE, TRUE, 0);
	g_signal_connect(G_OBJECT(ctree_mainbox), "size_allocate", 
			 G_CALLBACK(ctree_size_allocate_cb), mimeview);

	mimeview->ui_manager = gtk_ui_manager_new();
	mimeview->action_group = cm_menu_create_action_group_full(mimeview->ui_manager,
			"MimeView", mimeview_menu_actions,
			G_N_ELEMENTS(mimeview_menu_actions), (gpointer)mimeview);

	MENUITEM_ADDUI_MANAGER(mimeview->ui_manager, "/", "Menus", "Menus", GTK_UI_MANAGER_MENUBAR)
	MENUITEM_ADDUI_MANAGER(mimeview->ui_manager, 
			"/Menus/", "MimeView", "MimeView", GTK_UI_MANAGER_MENU);
	MENUITEM_ADDUI_MANAGER(mimeview->ui_manager, 
			"/Menus/MimeView/", "Open", "MimeView/Open",
			GTK_UI_MANAGER_MENUITEM);
#if (!defined MAEMO && !defined G_OS_WIN32)
	MENUITEM_ADDUI_MANAGER(mimeview->ui_manager, 
			"/Menus/MimeView/", "OpenWith", "MimeView/OpenWith",
			GTK_UI_MANAGER_MENUITEM);
#endif
	MENUITEM_ADDUI_MANAGER(mimeview->ui_manager, 
			"/Menus/MimeView/", "SendTo", "MimeView/SendTo",
			GTK_UI_MANAGER_MENUITEM);
	MENUITEM_ADDUI_MANAGER(mimeview->ui_manager, 
			"/Menus/MimeView/", "DisplayAsText", "MimeView/DisplayAsText",
			GTK_UI_MANAGER_MENUITEM);
	MENUITEM_ADDUI_MANAGER(mimeview->ui_manager, 
			"/Menus/MimeView/", "SaveAs", "MimeView/SaveAs",
			GTK_UI_MANAGER_MENUITEM);
	MENUITEM_ADDUI_MANAGER(mimeview->ui_manager, 
			"/Menus/MimeView/", "SaveAll", "MimeView/SaveAll",
			GTK_UI_MANAGER_MENUITEM);
	MENUITEM_ADDUI_MANAGER(mimeview->ui_manager, 
			"/Menus/MimeView/", "NextPart", "MimeView/NextPart",
			GTK_UI_MANAGER_MENUITEM);
	MENUITEM_ADDUI_MANAGER(mimeview->ui_manager, 
			"/Menus/MimeView/", "PrevPart", "MimeView/PrevPart",
			GTK_UI_MANAGER_MENUITEM);

	popupmenu = gtk_menu_item_get_submenu(GTK_MENU_ITEM(
				gtk_ui_manager_get_widget(mimeview->ui_manager, "/Menus/MimeView")) );


	vbox = gtk_vbox_new(FALSE, 0);
	gtk_widget_show(vbox);
	siginfoview = noticeview_create(mainwin);
	noticeview_hide(siginfoview);
	noticeview_set_icon_clickable(siginfoview, TRUE);
	gtk_box_pack_start(GTK_BOX(vbox), mime_notebook, TRUE, TRUE, 0);
	gtk_box_pack_end(GTK_BOX(vbox), GTK_WIDGET_PTR(siginfoview), FALSE, FALSE, 0);

	paned = gtk_vpaned_new();
	gtk_widget_show(paned);
	gtk_paned_pack1(GTK_PANED(paned), ctree_mainbox, FALSE, TRUE);
	gtk_paned_pack2(GTK_PANED(paned), vbox, TRUE, TRUE);
	
	hbox = gtk_hbox_new(FALSE, 0);
	gtk_box_pack_start(GTK_BOX(hbox), paned, TRUE, TRUE, 0);
	gtk_box_pack_start(GTK_BOX(hbox), icon_mainbox, FALSE, FALSE, 0);

	gtk_widget_show(hbox);
	gtk_widget_hide(ctree_mainbox);
#ifdef GENERIC_UMPC
	gtk_widget_set_size_request(mime_toggle, -1, r.height + 8);
#endif
	mimeview->hbox          = hbox;
	mimeview->paned         = paned;
	mimeview->scrolledwin   = scrolledwin;
	mimeview->ctree         = ctree;
	mimeview->mime_notebook = mime_notebook;
	mimeview->popupmenu     = popupmenu;
	mimeview->type          = -1;
	mimeview->ctree_mainbox = ctree_mainbox;
	mimeview->icon_scroll   = icon_scroll;
	mimeview->icon_vbox     = icon_vbox;
	mimeview->icon_mainbox  = icon_mainbox;
	mimeview->icon_count    = 0;
	mimeview->mainwin       = mainwin;
#if !(GTK_CHECK_VERSION(2,12,0))
	mimeview->tooltips      = tips;
#endif
	mimeview->mime_toggle   = mime_toggle;
	mimeview->siginfoview	= siginfoview;
	mimeview->scrollbutton  = scrollbutton;
	mimeview->target_list	= gtk_target_list_new(mimeview_mime_types, 1); 
	
	mimeviews = g_slist_prepend(mimeviews, mimeview);

	return mimeview;
}

void mimeview_init(MimeView *mimeview)
{
	textview_init(mimeview->textview);

	gtk_container_add(GTK_CONTAINER(mimeview->mime_notebook),
		GTK_WIDGET_PTR(mimeview->textview));
}

static gboolean any_part_is_signed(MimeInfo *mimeinfo)
{
	while (mimeinfo) {
		if (privacy_mimeinfo_is_signed(mimeinfo))
			return TRUE;
		mimeinfo = procmime_mimeinfo_next(mimeinfo);
	}

	return FALSE;
}

void mimeview_show_message(MimeView *mimeview, MimeInfo *mimeinfo,
			   const gchar *file)
{
	GtkTreeView *ctree = GTK_TREE_VIEW(mimeview->ctree);

	mimeview_clear(mimeview);

	cm_return_if_fail(file != NULL);
	cm_return_if_fail(mimeinfo != NULL);

	mimeview->mimeinfo = mimeinfo;

	mimeview->file = g_strdup(file);

	g_signal_handlers_block_by_func(G_OBJECT(ctree), mimeview_selected,
					mimeview);

	/* check if the mail's signed - it can change the mail structure */
	
	if (any_part_is_signed(mimeinfo))
		debug_print("signed mail\n");

	mimeview_set_multipart_tree(mimeview, mimeinfo, NULL);
	gtk_tree_view_expand_all(ctree);
	icon_list_clear(mimeview);
	icon_list_create(mimeview, mimeinfo);
	
	g_signal_handlers_unblock_by_func(G_OBJECT(ctree),
					  mimeview_selected, mimeview);
}

#ifdef USE_PTHREAD
static void mimeview_check_sig_cancel_now(MimeView *mimeview);
#endif

static void mimeview_free_mimeinfo(MimeView *mimeview)
{
	gboolean defer = FALSE;
#ifdef USE_PTHREAD
	defer = (mimeview->check_data != NULL);
	if (defer)
		mimeview->check_data->free_after_use = TRUE;
#endif
	if (mimeview->mimeinfo != NULL && !defer) {
		procmime_mimeinfo_free_all(mimeview->mimeinfo);
		mimeview->mimeinfo = NULL;
	} else if (defer) {
#ifdef USE_PTHREAD
		debug_print("deferring free(mimeinfo) and cancelling check\n");
		mimeview_check_sig_cancel_now(mimeview);
#endif
	}
}

void mimeview_destroy(MimeView *mimeview)
{
	GSList *cur;
	
	for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
		MimeViewer *viewer = (MimeViewer *) cur->data;
		viewer->destroy_viewer(viewer);
	}
	g_slist_free(mimeview->viewers);
	gtk_target_list_unref(mimeview->target_list);

#ifdef USE_PTHREAD
	if (mimeview->check_data) {
		mimeview->check_data->destroy_mimeview = TRUE;
		debug_print("deferring destroy\n");
	} else 
#endif
	{
		mimeview_free_mimeinfo(mimeview);
		gtk_tree_path_free(mimeview->opened);
		g_free(mimeview->file);
		g_free(mimeview);
		mimeviews = g_slist_remove(mimeviews, mimeview);
	}
	
}

MimeInfo *mimeview_get_selected_part(MimeView *mimeview)
{
	GtkTreeModel *model = gtk_tree_view_get_model(GTK_TREE_VIEW(mimeview->ctree));
	GtkTreeIter iter;
	GtkTreeSelection *selection;
	MimeInfo *partinfo = NULL;
	
	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(mimeview->ctree));
	if (gtk_tree_selection_get_selected(selection, NULL, &iter))
		gtk_tree_model_get(model, &iter, COL_DATA, &partinfo, -1);

	return partinfo;
}

MimeInfo *mimeview_get_node_part(MimeView *mimeview, GtkTreePath *path)
{
	GtkTreeModel *model = gtk_tree_view_get_model(GTK_TREE_VIEW(mimeview->ctree));
	GtkTreeIter iter;
	MimeInfo *partinfo;
	
	gtk_tree_model_get_iter(model, &iter, path);
	gtk_tree_model_get(model, &iter, COL_DATA, &partinfo, -1);
	return partinfo;
}

gboolean mimeview_tree_is_empty(MimeView *mimeview)
{
	GtkTreeModel *model = gtk_tree_view_get_model(GTK_TREE_VIEW(mimeview->ctree));
	GtkTreeIter iter;
	return !gtk_tree_model_get_iter_first(model, &iter);
}

static gboolean mimeview_tree_next(GtkTreeModel *model, GtkTreePath *path)
{
	GtkTreeIter iter, parent;
	gboolean has_parent;
	
	gtk_tree_model_get_iter(model, &iter, path);
	
	if (gtk_tree_model_iter_has_child(model, &iter)) {
		gtk_tree_path_down(path);
		return TRUE;
	}

	has_parent = gtk_tree_model_iter_parent(model, &parent, &iter);
	
	if (!gtk_tree_model_iter_next(model, &iter)) {
		while (has_parent) {
			GtkTreeIter saved_parent = parent;
			gtk_tree_path_up(path);
			if (gtk_tree_model_iter_next(model, &parent)) {
				gtk_tree_path_next(path);
				return TRUE;
			} else {
				has_parent = gtk_tree_model_iter_parent(model, &parent, &saved_parent);
			}
		}
		
	} else {
		gtk_tree_path_next(path);
		return TRUE;
	}

	return FALSE;
}

static gboolean mimeview_tree_prev(MimeView *mimeview, GtkTreePath *path)
{
	GtkTreeModel *model = gtk_tree_view_get_model(GTK_TREE_VIEW(mimeview->ctree));
	GtkTreeIter iter, child, parent;
	gboolean has_parent;

	gtk_tree_model_get_iter(model, &iter, path);	
	has_parent = gtk_tree_model_iter_parent(model, &parent, &iter);

	if (gtk_tree_path_prev(path)) {
		gtk_tree_model_get_iter(model, &iter, path);
		
		if (gtk_tree_model_iter_nth_child(model, &child, &iter, 0)) {
			gtk_tree_path_down(path);
			
			while (gtk_tree_model_iter_next(model, &child))
				gtk_tree_path_next(path);
		}
		
		return TRUE;
	}

	if (has_parent) {
		gtk_tree_path_up(path);
		return TRUE;
	}

	return FALSE;
}

gint mimeview_get_selected_part_num(MimeView *mimeview)
{
	GtkTreeModel *model = gtk_tree_view_get_model(GTK_TREE_VIEW(mimeview->ctree));
	GtkTreeIter iter;
	GtkTreePath *path;
	gint i = 0;

	gtk_tree_model_get_iter_first(model, &iter);
	path = gtk_tree_model_get_path(model, &iter);
	
	do {
		if (!gtk_tree_path_compare(mimeview->opened, path)) {
			gtk_tree_path_free(path);
			return i;
		}

		i++;
	} while (mimeview_tree_next(model, path));

	gtk_tree_path_free(path);

	return -1;
}

void mimeview_select_part_num(MimeView *mimeview, gint i)
{
	GtkTreeModel *model = gtk_tree_view_get_model(GTK_TREE_VIEW(mimeview->ctree));
	GtkTreeIter iter;
	GtkTreePath *path;
	GtkTreeSelection *selection;
	gint x = 0;
	
	if (i < 0)
		return;
	
	gtk_tree_model_get_iter_first(model, &iter);
	path = gtk_tree_model_get_path(model, &iter);
	
	while (x != i) {
		if (!mimeview_tree_next(model, path)) {
			gtk_tree_path_free(path);
			return;
		}
		x++;
	}
	
	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(mimeview->ctree));
	gtk_tree_selection_select_path(selection, path);
	gtk_tree_path_free(path);
}

static void mimeview_set_multipart_tree(MimeView *mimeview,
					MimeInfo *mimeinfo,
					GtkTreeIter *parent)
{
	GtkTreeStore *model = GTK_TREE_STORE(gtk_tree_view_get_model(
					GTK_TREE_VIEW(mimeview->ctree)));
	GtkTreeIter iter;
	gchar *content_type, *length, *name;

	cm_return_if_fail(mimeinfo != NULL);

	while (mimeinfo != NULL) {
		if (mimeinfo->type != MIMETYPE_UNKNOWN && mimeinfo->subtype)
			content_type = g_strdup_printf("%s/%s",
					procmime_get_media_type_str(mimeinfo->type),
					mimeinfo->subtype);
		else
			content_type = g_strdup("UNKNOWN");

		length = g_strdup(to_human_readable((goffset) mimeinfo->length));

		if (prefs_common.attach_desc)
			name = g_strdup(get_part_description(mimeinfo));
		else
			name = g_strdup(get_part_name(mimeinfo));

		gtk_tree_store_append(model, &iter, parent);
		gtk_tree_store_set(model, &iter,
				COL_MIMETYPE, content_type,
				COL_SIZE, length,
				COL_NAME, name,
				COL_DATA, mimeinfo, -1);
		g_free(content_type);
		g_free(length);
		g_free(name);

		if (mimeinfo->node->children)
			mimeview_set_multipart_tree(mimeview, 
				(MimeInfo *) mimeinfo->node->children->data, &iter);
		mimeinfo = mimeinfo->node->next != NULL ? 
				(MimeInfo *) mimeinfo->node->next->data : NULL;
	}
}

static const gchar *get_real_part_name(MimeInfo *partinfo)
{
	const gchar *name = NULL;

	name = procmime_mimeinfo_get_parameter(partinfo, "filename");
	if (name == NULL)
		name = procmime_mimeinfo_get_parameter(partinfo, "name");

	return name;
}

static const gchar *get_part_name(MimeInfo *partinfo)
{
	const gchar *name;

	name = get_real_part_name(partinfo);
	if (name == NULL)
		name = "";

	return name;
}

static const gchar *get_part_description(MimeInfo *partinfo)
{
	if (partinfo->description)
		return partinfo->description;
	else
		return get_part_name(partinfo);
}

static void mimeview_show_message_part(MimeView *mimeview, MimeInfo *partinfo)
{
	FILE *fp;
	const gchar *fname;

	if (!partinfo) return;

	fname = mimeview->file;
	if (!fname) return;

	if ((fp = g_fopen(fname, "rb")) == NULL) {
		FILE_OP_ERROR(fname, "fopen");
		return;
	}

	if (fseek(fp, partinfo->offset, SEEK_SET) < 0) {
		FILE_OP_ERROR(mimeview->file, "fseek");
		fclose(fp);
		return;
	}

	mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
	textview_show_part(mimeview->textview, partinfo, fp);

	fclose(fp);
}

static MimeViewer *get_viewer_for_content_type(MimeView *mimeview, const gchar *content_type)
{
	GSList *cur;
	MimeViewerFactory *factory = NULL;
	MimeViewer *viewer = NULL;
	gchar *real_contenttype = NULL;

/*
 * FNM_CASEFOLD is a GNU extension
 */
#ifndef FNM_CASEFOLD
#define FNM_CASEFOLD 0
	real_contenttype = g_utf8_strdown((gchar *)content_type, -1);
#else
	real_contenttype = g_strdup(content_type);
#endif
	
	for (cur = mimeviewer_factories; cur != NULL; cur = g_slist_next(cur)) {
		MimeViewerFactory *curfactory = cur->data;
		gint i = 0;

		while (curfactory->content_types[i] != NULL) {
			if(!fnmatch(curfactory->content_types[i], real_contenttype, FNM_CASEFOLD)) {
				debug_print("%s\n", curfactory->content_types[i]);
				factory = curfactory;
				break;
			}
			i++;
		}
		if (factory != NULL)
			break;
	}
	g_free(real_contenttype);
	if (factory == NULL)
		return NULL;

	for (cur = mimeview->viewers; cur != NULL; cur = g_slist_next(cur)) {
		MimeViewer *curviewer = cur->data;
		
		if (curviewer->factory == factory)
			return curviewer;
	}
	viewer = factory->create_viewer();
	gtk_container_add(GTK_CONTAINER(mimeview->mime_notebook),
		GTK_WIDGET(viewer->get_widget(viewer)));
		
	mimeview->viewers = g_slist_append(mimeview->viewers, viewer);

	return viewer;
}

gboolean mimeview_has_viewer_for_content_type(MimeView *mimeview, const gchar *content_type)
{
	return (get_viewer_for_content_type(mimeview, content_type) != NULL);
}

static MimeViewer *get_viewer_for_mimeinfo(MimeView *mimeview, MimeInfo *partinfo)
{
	gchar *content_type = NULL;
	MimeViewer *viewer = NULL;

	if ((partinfo->type == MIMETYPE_APPLICATION) &&
            (!g_ascii_strcasecmp(partinfo->subtype, "octet-stream"))) {
		const gchar *filename;

		filename = procmime_mimeinfo_get_parameter(partinfo, "filename");
		if (filename == NULL)
			filename = procmime_mimeinfo_get_parameter(partinfo, "name");
		if (filename != NULL)
			content_type = procmime_get_mime_type(filename);
	} else {
		content_type = procmime_get_content_type_str(partinfo->type, partinfo->subtype);
	}

	if (content_type != NULL) {
		viewer = get_viewer_for_content_type(mimeview, content_type);
		g_free(content_type);
	}

	return viewer;
}

gboolean mimeview_show_part(MimeView *mimeview, MimeInfo *partinfo)
{
	MimeViewer *viewer;
	
	if (mimeview->messageview->partial_display_shown) {
		noticeview_hide(mimeview->messageview->noticeview);
		mimeview->messageview->partial_display_shown = FALSE;
	}

	viewer = get_viewer_for_mimeinfo(mimeview, partinfo);
	if (viewer == NULL) {
		if (mimeview->mimeviewer != NULL)
			mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);
		mimeview->mimeviewer = NULL;
		return FALSE;
	}

	if (mimeview->mimeviewer != NULL)
		mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);

	if (mimeview->mimeviewer != viewer)
		mimeview->mimeviewer = viewer;

	mimeview_change_view_type(mimeview, MIMEVIEW_VIEWER);
	viewer->mimeview = mimeview;
	viewer->show_mimepart(viewer, mimeview->file, partinfo);

	return TRUE;
}

static void mimeview_change_view_type(MimeView *mimeview, MimeViewType type)
{
	TextView  *textview  = mimeview->textview;
	GtkWidget *focused = NULL;
	
	if (mainwindow_get_mainwindow())
		focused = gtkut_get_focused_child(
				GTK_CONTAINER(mainwindow_get_mainwindow()->window));

	if ((mimeview->type != MIMEVIEW_VIEWER) && 
	    (mimeview->type == type)) return;

	switch (type) {
	case MIMEVIEW_TEXT:
		gtk_notebook_set_current_page(GTK_NOTEBOOK(mimeview->mime_notebook),
			gtk_notebook_page_num(GTK_NOTEBOOK(mimeview->mime_notebook), 
			GTK_WIDGET_PTR(textview)));
		break;
	case MIMEVIEW_VIEWER:
		gtk_notebook_set_current_page(GTK_NOTEBOOK(mimeview->mime_notebook),
			gtk_notebook_page_num(GTK_NOTEBOOK(mimeview->mime_notebook), 
			GTK_WIDGET(mimeview->mimeviewer->get_widget(mimeview->mimeviewer))));
		break;
	default:
		return;
	}
	if (focused)
		gtk_widget_grab_focus(focused);
	mimeview->type = type;
}

void mimeview_clear(MimeView *mimeview)
{
	GtkTreeModel *model;
	
	if (!mimeview)
		return;

	if (g_slist_find(mimeviews, mimeview) == NULL)
		return;
	
	noticeview_hide(mimeview->siginfoview);

	model = gtk_tree_view_get_model(GTK_TREE_VIEW(mimeview->ctree));
	gtk_tree_store_clear(GTK_TREE_STORE(model));

	textview_clear(mimeview->textview);
	if (mimeview->mimeviewer != NULL)
		mimeview->mimeviewer->clear_viewer(mimeview->mimeviewer);

	mimeview_free_mimeinfo(mimeview);

	mimeview->mimeinfo = NULL;

	gtk_tree_path_free(mimeview->opened);
	mimeview->opened = NULL;

	g_free(mimeview->file);
	mimeview->file = NULL;

	icon_list_clear(mimeview);
	mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
}

static void check_signature_cb(GtkWidget *widget, gpointer user_data);
static void mimeview_check_signature(MimeView *mimeview);
static void display_full_info_cb(GtkWidget *widget, gpointer user_data);

static void update_signature_noticeview(MimeView *mimeview, MimeInfo *mimeinfo, 
					gboolean special, SignatureStatus code)
{
	gchar *text = NULL, *button_text = NULL;
	void  *func = NULL;
	StockPixmap icon = STOCK_PIXMAP_PRIVACY_SIGNED;
	SignatureStatus mycode = SIGNATURE_UNCHECKED;
	
	cm_return_if_fail(mimeview != NULL);
	cm_return_if_fail(mimeinfo != NULL);
	
	if (special)
		mycode = code;
	else 
		mycode = privacy_mimeinfo_get_sig_status(mimeinfo);

	switch (mycode) {
	case SIGNATURE_UNCHECKED:
		button_text = _("Check signature");
		func = check_signature_cb;
		icon = STOCK_PIXMAP_PRIVACY_SIGNED;
		break;
	case SIGNATURE_OK:
		button_text = _("View full information");
		func = display_full_info_cb;
		icon = STOCK_PIXMAP_PRIVACY_PASSED;
		break;
	case SIGNATURE_WARN:
		button_text = _("View full information");
		func = display_full_info_cb;
		icon = STOCK_PIXMAP_PRIVACY_WARN;
		break;
	case SIGNATURE_KEY_EXPIRED:
		button_text = _("View full information");
		func = display_full_info_cb;
		icon = STOCK_PIXMAP_PRIVACY_EXPIRED;
		break;
	case SIGNATURE_INVALID:
		button_text = _("View full information");
		func = display_full_info_cb;
		icon = STOCK_PIXMAP_PRIVACY_FAILED;
		break;
	case SIGNATURE_CHECK_FAILED:
		button_text = _("Check again");
		func = check_signature_cb;
		icon = STOCK_PIXMAP_PRIVACY_UNKNOWN;
	case SIGNATURE_CHECK_TIMEOUT:
		button_text = _("Check again");
		func = check_signature_cb;
		icon = STOCK_PIXMAP_PRIVACY_UNKNOWN;
	default:
		break;
	}
	if (mycode == SIGNATURE_UNCHECKED) {
		gchar *tmp = privacy_mimeinfo_sig_info_short(mimeinfo);
		text = g_strdup_printf("%s %s",
			tmp, _("Click the icon or hit 'C' to check it."));
		g_free(tmp);
	} else if (mycode != SIGNATURE_CHECK_TIMEOUT) {
		text = privacy_mimeinfo_sig_info_short(mimeinfo);
	} else if (mycode == SIGNATURE_CHECK_TIMEOUT) {
		text = g_strdup(_("Timeout checking the signature. Click the icon or hit 'C' to try again."));
	}

	noticeview_set_text(mimeview->siginfoview, text);
	gtk_label_set_selectable(GTK_LABEL(mimeview->siginfoview->text), TRUE);

	g_free(text);
	noticeview_set_button_text(mimeview->siginfoview, NULL);
	noticeview_set_button_press_callback(
		mimeview->siginfoview,
		G_CALLBACK(func),
		(gpointer) mimeview);
	noticeview_set_icon(mimeview->siginfoview, icon);
	noticeview_set_tooltip(mimeview->siginfoview, button_text);
}

#ifdef USE_PTHREAD

/* reset all thread stuff, and do the cleanups we've been left to do */
static void mimeview_check_data_reset(MimeView *mimeview)
{
	gboolean must_free;
	gboolean must_destroy;

	if (!mimeview->check_data)
		return;

	must_free = mimeview->check_data->free_after_use;
	must_destroy = mimeview->check_data->destroy_mimeview;
	
	if (mimeview->check_data->cancel_th_init) {
		debug_print("killing canceller thread\n");
		mimeview->check_data->cancel_th_init = FALSE;
		pthread_cancel(mimeview->check_data->cancel_th);
	}

	g_free(mimeview->check_data);
	mimeview->check_data = NULL;

	if (must_free) {
		debug_print("freeing deferred mimeinfo\n");
		procmime_mimeinfo_free_all(mimeview->check_data->siginfo);
	}
	if (must_destroy) {
		debug_print("freeing deferred mimeview\n");
		mimeview_free_mimeinfo(mimeview);
		gtk_tree_path_free(mimeview->opened);
		g_free(mimeview->file);
		g_free(mimeview);
		mimeviews = g_slist_remove(mimeviews, mimeview);
	}

}

/* GUI update once the checker thread is done or killed */
static gboolean mimeview_check_sig_thread_cb(void *data)
{
	MimeView *mimeview = (MimeView *) data;
	MimeInfo *mimeinfo = mimeview->siginfo;

	debug_print("mimeview_check_sig_thread_cb\n");
	
	if (mimeinfo == NULL) {
		/* message changed !? */
		g_warning("no more siginfo!\n");
		goto end;
	}
	
	if (!mimeview->check_data) {
		g_warning("nothing to check\n");
		return FALSE;
	}

	if (mimeview->check_data->siginfo != mimeinfo) {
		/* message changed !? */
		g_warning("different siginfo!\n");
		goto end;
	}

	if (mimeview->check_data->destroy_mimeview ||
	    mimeview->check_data->free_after_use) {
	    	debug_print("not bothering, we're changing message\n"); 
		goto end;
	}
	
	/* update status */
	if (mimeview->check_data->timeout) 
		update_signature_noticeview(mimeview, mimeview->siginfo, 
			TRUE, SIGNATURE_CHECK_TIMEOUT);
	else
		update_signature_noticeview(mimeview, mimeview->siginfo, 
			FALSE, 0);
	icon_list_clear(mimeview);
	icon_list_create(mimeview, mimeview->mimeinfo);
	
end:
	mimeview_check_data_reset(mimeview);
	return FALSE;
}

/* sig checker thread */
static void *mimeview_check_sig_worker_thread(void *data)
{
	MimeView *mimeview = (MimeView *)data;
	MimeInfo *mimeinfo = mimeview->siginfo;
	
	debug_print("checking...\n");

	if (!mimeview->check_data)
		return NULL;

	if (mimeinfo && mimeinfo == mimeview->check_data->siginfo) {
		privacy_mimeinfo_check_signature(mimeinfo);
		if (mimeview->check_data && mimeview->check_data->cancel_th_init) {
			mimeview->check_data->cancel_th_init = FALSE;
			pthread_cancel(mimeview->check_data->cancel_th);
		}
	} else {
		/* that's strange! we changed message without 
		 * getting killed. */
		g_warning("different siginfo!\n");
		mimeview_check_data_reset(mimeview);
		return NULL;
	}

	/* use g_timeout so that GUI updates is done from the
	 * correct thread */
	g_timeout_add(0,mimeview_check_sig_thread_cb,mimeview);
	
	return NULL;
}

/* killer thread - acts when the checker didn't work fast
 * enough. */
static void *mimeview_check_sig_cancel_thread(void *data)
{
	MimeView *mimeview = (MimeView *)data;
	
	if (!mimeview->check_data)
		return NULL; /* nothing to kill ! */

	/* wait for a few seconds... */
	debug_print("waiting a while\n");

	g_usleep(5 * 1000 * 1000);
	
	if (!mimeview->check_data)
		return NULL; /* nothing to kill, it's done in time :) */
	
	/* too late, go away checker thread */
	debug_print("killing checker thread\n");
	if (mimeview->check_data->th_init) {
		mimeview->check_data->th_init = FALSE;
		pthread_cancel(mimeview->check_data->th);
	}

	/* tell upstream it was a timeout */
	mimeview->check_data->timeout = TRUE;
	/* use g_timeout so that GUI updates is done from the
	 * correct thread */
	g_timeout_add(0,mimeview_check_sig_thread_cb,mimeview);

	return NULL;
}

/* get rid of the checker thread right now - used when changing the
 * displayed message for example. */
static void mimeview_check_sig_cancel_now(MimeView *mimeview)
{
	if (!mimeview->check_data)
		return;
	debug_print("killing checker thread NOW\n");
	if (mimeview->check_data->th_init) {
		mimeview->check_data->th_init = FALSE;
		pthread_cancel(mimeview->check_data->th);
	}

	/* tell upstream it was a timeout */
	mimeview->check_data->timeout = TRUE;
	mimeview_check_sig_thread_cb(mimeview);
	return;
}

/* creates a thread to check the signature, and a second one
 * to kill the first one after a timeout */
static void mimeview_check_sig_in_thread(MimeView *mimeview)
{
	pthread_t th, th2;
	pthread_attr_t detach, detach2;
	
	if (mimeview->check_data) {
		g_warning("already checking it");
		return;
	}
	
	mimeview->check_data = g_new0(SigCheckData, 1);
	mimeview->check_data->siginfo = mimeview->siginfo;
	debug_print("creating thread\n");

	/* init thread attributes and create the checker thread */
	if (pthread_attr_init(&detach) != 0 ||
	    pthread_attr_setdetachstate(&detach, PTHREAD_CREATE_DETACHED) != 0 ||
	    pthread_attr_init(&detach2) != 0 ||
	    pthread_attr_setdetachstate(&detach2, PTHREAD_CREATE_DETACHED) != 0 ||
	    pthread_create(&th, &detach, 
			mimeview_check_sig_worker_thread, 
			mimeview) != 0) {
		/* arh. We'll do it synchronously. */
		g_warning("can't create thread");
		g_free(mimeview->check_data);
		mimeview->check_data = NULL;
		return;
	} else {
		mimeview->check_data->th = th;
		mimeview->check_data->th_init = TRUE;
	}

	/* create the killer thread */
	pthread_create(&th2, &detach2, 
			mimeview_check_sig_cancel_thread, 
			mimeview);

	mimeview->check_data->cancel_th = th2;
	mimeview->check_data->cancel_th_init = TRUE;
}
#endif

static void check_signature_cb(GtkWidget *widget, gpointer user_data)
{
	MimeView *mimeview = (MimeView *) user_data;
	MimeInfo *mimeinfo = mimeview->siginfo;
	
	if (mimeinfo == NULL)
		return;
#ifdef USE_PTHREAD
	if (mimeview->check_data)
		return;
#endif
	noticeview_set_text(mimeview->siginfoview, _("Checking signature..."));
	GTK_EVENTS_FLUSH();
#ifdef USE_PTHREAD
	/* let's do it non-blocking */
	mimeview_check_sig_in_thread(mimeview);
	if (!mimeview->check_data) /* let's check syncronously */
#endif
	{
		debug_print("checking without thread\n");
		privacy_mimeinfo_check_signature(mimeinfo);
		update_signature_noticeview(mimeview, mimeview->siginfo, FALSE, 0);
		icon_list_clear(mimeview);
		icon_list_create(mimeview, mimeview->mimeinfo);
	}
}

static void mimeview_check_signature(MimeView *mimeview)
{
	check_signature_cb(NULL, mimeview);	
}

static void redisplay_email(GtkWidget *widget, gpointer user_data)
{
	MimeView *mimeview = (MimeView *) user_data;
	gtk_tree_path_free(mimeview->opened);
	mimeview->opened = NULL;
	mimeview_selected(gtk_tree_view_get_selection(
			GTK_TREE_VIEW(mimeview->ctree)), mimeview);
}

static void display_full_info_cb(GtkWidget *widget, gpointer user_data)
{
	MimeView *mimeview = (MimeView *) user_data;
	gchar *siginfo;

	siginfo = privacy_mimeinfo_sig_info_full(mimeview->siginfo);
	textview_set_text(mimeview->textview, siginfo);
	g_free(siginfo);
	noticeview_set_button_text(mimeview->siginfoview, NULL);
	noticeview_set_button_press_callback(
		mimeview->siginfoview,
		G_CALLBACK(redisplay_email),
		(gpointer) mimeview);
	noticeview_set_tooltip(mimeview->siginfoview, _("Go back to email"));
}

static void update_signature_info(MimeView *mimeview, MimeInfo *selected)
{
	MimeInfo *siginfo;
	MimeInfo *first_text;
	
	cm_return_if_fail(mimeview != NULL);
	cm_return_if_fail(selected != NULL);
	
	if (selected->type == MIMETYPE_MESSAGE 
	&&  !g_ascii_strcasecmp(selected->subtype, "rfc822")) {
		/* if the first text part is signed, check that */
		first_text = selected;
		while (first_text && first_text->type != MIMETYPE_TEXT) {
			first_text = procmime_mimeinfo_next(first_text);
		}
		if (first_text) {
			update_signature_info(mimeview, first_text);
			return;
		}	
	}

	siginfo = selected;
	while (siginfo != NULL) {
		if (privacy_mimeinfo_is_signed(siginfo))
			break;
		siginfo = procmime_mimeinfo_parent(siginfo);
	}
	mimeview->siginfo = siginfo;
	
	if (siginfo == NULL) {
		noticeview_hide(mimeview->siginfoview);
		return;
	}
	
	update_signature_noticeview(mimeview, siginfo, FALSE, 0);
	noticeview_show(mimeview->siginfoview);
}

static void mimeview_selected(GtkTreeSelection *selection, MimeView *mimeview)
{
	GtkTreeView *ctree = GTK_TREE_VIEW(mimeview->ctree);
	GtkTreeModel *model;
	GtkTreeIter iter;
	GtkTreePath *path;
	MimeInfo *partinfo;

	selection = gtk_tree_view_get_selection(ctree);
	if (!gtk_tree_selection_get_selected(selection, &model, &iter))
		return;

	path = gtk_tree_model_get_path(model, &iter);

	if (mimeview->opened && !gtk_tree_path_compare(mimeview->opened, path)) {
		gtk_tree_path_free(path);
		return;
	}
	
	gtk_tree_path_free(mimeview->opened);
	mimeview->opened = path;
	mimeview->spec_part = NULL;
	gtk_tree_view_scroll_to_cell(ctree, path, NULL, TRUE, 0.5, 0);

	partinfo = mimeview_get_node_part(mimeview, path);
	if (!partinfo) return;

	/* ungrab the mouse event */
	if (gtk_widget_has_grab(GTK_WIDGET(ctree))) {
		gtk_grab_remove(GTK_WIDGET(ctree));
		if (gdk_pointer_is_grabbed())
			gdk_pointer_ungrab(GDK_CURRENT_TIME);
	}
	
	mimeview->textview->default_text = FALSE;

	update_signature_info(mimeview, partinfo);

	if (!mimeview_show_part(mimeview, partinfo)) {
		switch (partinfo->type) {
		case MIMETYPE_TEXT:
		case MIMETYPE_MESSAGE:
		case MIMETYPE_MULTIPART:
			mimeview_show_message_part(mimeview, partinfo);
		
			break;
		default:
			mimeview->textview->default_text = TRUE;
			mimeview_change_view_type(mimeview, MIMEVIEW_TEXT);
			textview_clear(mimeview->textview);
			textview_show_mime_part(mimeview->textview, partinfo);
			break;
		}
	}
}

static gint mimeview_button_pressed(GtkWidget *widget, GdkEventButton *event,
				    MimeView *mimeview)
{
	GtkTreeSelection *selection;
	GtkTreeIter iter;

	if (!event) return FALSE;

	if (event->button == 2 || event->button == 3) {
		selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(widget));
		if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
			return FALSE;
		
		gtk_tree_selection_select_iter(selection, &iter);
	}
	part_button_pressed(mimeview, event, mimeview_get_selected_part(mimeview));

	return FALSE;
}

static gboolean mimeview_scrolled(GtkWidget *widget, GdkEventScroll *event,
				    MimeView *mimeview)
{
	GtkVScrollbutton *scrollbutton = (GtkVScrollbutton *)mimeview->scrollbutton;
	if (event->direction == GDK_SCROLL_UP) {
		scrollbutton->scroll_type = GTK_SCROLL_STEP_BACKWARD;
	} else {
		scrollbutton->scroll_type = GTK_SCROLL_STEP_FORWARD;
	}
	gtk_vscrollbutton_scroll(scrollbutton);
	return TRUE;
}

/* from gdkevents.c */
#define DOUBLE_CLICK_TIME 250

static gboolean part_button_pressed(MimeView *mimeview, GdkEventButton *event, 
				    MimeInfo *partinfo)
{
	static MimeInfo *lastinfo;
	static guint32 lasttime;

	if (event->button == 2 ||
	    (event->button == 1 && (event->time - lasttime) < DOUBLE_CLICK_TIME && lastinfo == partinfo)) {
		/* call external program for image, audio or html */
		mimeview_launch(mimeview, partinfo);
		return TRUE;
	} else if (event->button == 3) {
		if (partinfo && (partinfo->type == MIMETYPE_MESSAGE ||
				 partinfo->type == MIMETYPE_IMAGE ||
				 partinfo->type == MIMETYPE_MULTIPART))
			cm_menu_set_sensitive_full(mimeview->ui_manager, "Menus/MimeView/DisplayAsText", FALSE);
		else
			cm_menu_set_sensitive_full(mimeview->ui_manager, "Menus/MimeView/DisplayAsText", TRUE);
#ifndef G_OS_WIN32
		if (partinfo &&
		    partinfo->type == MIMETYPE_APPLICATION &&
		    !g_ascii_strcasecmp(partinfo->subtype, "octet-stream"))
			cm_menu_set_sensitive_full(mimeview->ui_manager, "Menus/MimeView/Open", FALSE);
		else
#endif
			cm_menu_set_sensitive_full(mimeview->ui_manager, "Menus/MimeView/Open", TRUE);

		g_object_set_data(G_OBJECT(mimeview->popupmenu),
				  "pop_partinfo", partinfo);
				    
		gtk_menu_popup(GTK_MENU(mimeview->popupmenu),
			       NULL, NULL, NULL, NULL,
			       event->button, event->time);
		return TRUE;
	}

	lastinfo = partinfo;
	lasttime = event->time;
	return FALSE;
}


gboolean mimeview_pass_key_press_event(MimeView *mimeview, GdkEventKey *event)
{
	return mimeview_key_pressed(mimeview->ctree, event, mimeview);
}

static void mimeview_select_next_part(MimeView *mimeview)
{
	GtkTreeView *ctree = GTK_TREE_VIEW(mimeview->ctree);
	GtkTreeModel *model = gtk_tree_view_get_model(ctree);
	GtkTreeSelection *selection;
	GtkTreeIter iter;
	GtkTreePath *path;
	MimeInfo *partinfo = NULL;
	gboolean has_next;
	
	gtk_tree_model_get_iter(model, &iter, mimeview->opened);
	path = gtk_tree_model_get_path(model, &iter);
skip:
	has_next = mimeview_tree_next(model, path);
	if (!has_next) {
		has_next = gtk_tree_model_get_iter_first(model, &iter);
		gtk_tree_path_free(path);
		path = gtk_tree_model_get_path(model, &iter);
	}

	if (has_next) {
		partinfo = mimeview_get_node_part(mimeview, path);
		if (partinfo->type == MIMETYPE_MULTIPART ||
		    (!prefs_common.show_inline_attachments && partinfo->id))
			goto skip;
		selection = gtk_tree_view_get_selection(ctree);
		gtk_tree_selection_select_path(selection, path);
		icon_list_toggle_by_mime_info(mimeview, partinfo);
	}
	
	gtk_tree_path_free(path);
}

static void mimeview_select_prev_part(MimeView *mimeview)
{
	GtkTreeView *ctree = GTK_TREE_VIEW(mimeview->ctree);
	GtkTreeModel *model = gtk_tree_view_get_model(ctree);
	GtkTreeSelection *selection;
	GtkTreeIter iter;
	GtkTreePath *path;
	MimeInfo *partinfo = NULL;
	gboolean has_prev;
	
	gtk_tree_model_get_iter(model, &iter, mimeview->opened);
	path = gtk_tree_model_get_path(model, &iter);
skip:
	has_prev = mimeview_tree_prev(mimeview, path);
	if (!has_prev) {
		while (mimeview_tree_next(model, path)) {}
		has_prev = TRUE;
	}

	if (has_prev) {
		partinfo = mimeview_get_node_part(mimeview, path);
		if (partinfo->type == MIMETYPE_MULTIPART ||
		    (!prefs_common.show_inline_attachments && partinfo->id))
			goto skip;
		selection = gtk_tree_view_get_selection(ctree);
		gtk_tree_selection_select_path(selection, path);
		icon_list_toggle_by_mime_info(mimeview, partinfo);
	}
	
	gtk_tree_path_free(path);
}

#define BREAK_ON_MODIFIER_KEY() \
	if ((event->state & (GDK_MOD1_MASK|GDK_CONTROL_MASK)) != 0) break

static gint mimeview_key_pressed(GtkWidget *widget, GdkEventKey *event,
				 MimeView *mimeview)
{
	SummaryView *summaryview;

	if (!event) return FALSE;
	if (!mimeview->opened) return FALSE;

	summaryview = mimeview->messageview->mainwin->summaryview;
	
	if (summaryview && quicksearch_has_focus(summaryview->quicksearch))
		return FALSE;
		
	switch (event->keyval) {
	case GDK_KEY_Home:
	case GDK_KEY_End:
		textview_scroll_max(mimeview->textview,
				    (event->keyval == GDK_KEY_Home));
		return TRUE;
	case GDK_KEY_Page_Down:
	case GDK_KEY_space:
		if (mimeview_scroll_page(mimeview,
					 (event->state & GDK_SHIFT_MASK) != 0))
			return TRUE;
			
		if (!(event->state & GDK_SHIFT_MASK))
			mimeview_select_next_part(mimeview);
		return TRUE;
	case GDK_KEY_Page_Up:
	case GDK_KEY_BackSpace:
		mimeview_scroll_page(mimeview, TRUE);
		return TRUE;
	case GDK_KEY_Return:
	case GDK_KEY_KP_Enter:
		mimeview_scroll_one_line(mimeview,
					 (event->state & GDK_MOD1_MASK) != 0);
		return TRUE;
	case GDK_KEY_Up:
	case GDK_KEY_Down:
		mimeview_scroll_one_line(mimeview, (event->keyval == GDK_KEY_Up));
		return TRUE;
	case GDK_KEY_y:
		BREAK_ON_MODIFIER_KEY();
		mimeview_save_as(mimeview);
		return TRUE;
	case GDK_KEY_t:
		BREAK_ON_MODIFIER_KEY();
		mimeview_display_as_text(mimeview);
		return TRUE;	
	case GDK_KEY_l:
		BREAK_ON_MODIFIER_KEY();
		mimeview_launch(mimeview, NULL);
		return TRUE;
	case GDK_KEY_o:
		BREAK_ON_MODIFIER_KEY();
#ifndef G_OS_WIN32
		mimeview_open_with(mimeview);
#endif
		return TRUE;
	case GDK_KEY_c:
		BREAK_ON_MODIFIER_KEY();
		mimeview_check_signature(mimeview);
		return TRUE;
	case GDK_KEY_a:
		BREAK_ON_MODIFIER_KEY();
		mimeview_select_next_part(mimeview);
		return TRUE;
	case GDK_KEY_z:
		BREAK_ON_MODIFIER_KEY();
		mimeview_select_prev_part(mimeview);
		return TRUE;
	default:
		break;
	}

	if (mimeview->messageview->new_window) return FALSE;

	return summary_pass_key_press_event(summaryview, event);
}

static void mimeview_drag_data_get(GtkWidget	    *widget,
				   GdkDragContext   *drag_context,
				   GtkSelectionData *selection_data,
				   guint	     info,
				   guint	     time,
				   MimeView	    *mimeview)
{
	gchar *filename = NULL, *uriname, *tmp;
	MimeInfo *partinfo;
	gint err;
	gint count = 0;

	if (!mimeview->opened) return;
	if (!mimeview->file) return;

	partinfo = mimeview_get_selected_part(mimeview);
	if (!partinfo) return;

	if (strlen(get_part_name(partinfo)) > 0) {
		filename = g_path_get_basename(get_part_name(partinfo));
		if (*filename == '\0') return;
	} else if (partinfo->type == MIMETYPE_MESSAGE 
		   && !g_ascii_strcasecmp(partinfo->subtype, "rfc822")) {
		gchar *name = NULL;
		GPtrArray *headers = NULL;
		FILE *fp;

		fp = g_fopen(partinfo->data.filename, "rb");
		fseek(fp, partinfo->offset, SEEK_SET);
		headers = procheader_get_header_array_asis(fp);
		if (headers) {
			gint i;
			for (i = 0; i < headers->len; i++) {
				Header *header = g_ptr_array_index(headers, i);
				if (procheader_headername_equal(header->name, "Subject")) {
					unfold_line(header->body);
					name = g_strconcat(header->body, ".txt", NULL);
					subst_for_filename(name);
				}
			}
			procheader_header_array_destroy(headers);
		}
		fclose(fp);
		if (name)
			filename = g_path_get_basename(name);
		g_free(name);
	}
	if (filename == NULL)
		filename = g_path_get_basename("Unnamed part");

	if (!g_utf8_validate(filename, -1, NULL))
		tmp = conv_codeset_strdup(filename,
				conv_get_locale_charset_str(),
				CS_UTF_8);
	else
		tmp = g_strdup(filename);

	if (tmp == NULL) {
	…