/*
 * This is a plug-in for GIMP.
 *
 * Generates clickable image maps.
 *
 * Copyright (C) 1998-2005 Maurits Rijk  m.rijk@chello.nl
 *
 * 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 <https://www.gnu.org/licenses/>.
 *
 */

#include "config.h"

#include <stdio.h>
#include <string.h>

#include "libgimp/gimp.h"
#include "libgimp/gimpui.h"

#include "imap_browse.h"
#include "imap_commands.h"
#include "imap_default_dialog.h"
#include "imap_edit_area_info.h"
#include "imap_main.h"
#include "imap_stock.h"
#include "imap_table.h"

#include "libgimp/stdplugins-intl.h"

static gboolean callback_lock;

static void select_web_cb    (GtkWidget        *widget,
                              AreaInfoDialog_t *param);
static void select_ftp_cb    (GtkWidget        *widget,
                              AreaInfoDialog_t *param);
static void select_gopher_cb (GtkWidget        *widget,
                              AreaInfoDialog_t *param);
static void select_other_cb  (GtkWidget        *widget,
                              AreaInfoDialog_t *param);
static void select_file_cb   (GtkWidget        *widget,
                              AreaInfoDialog_t *param);
static void select_wais_cb   (GtkWidget        *widget,
                              AreaInfoDialog_t *param);
static void select_telnet_cb (GtkWidget        *widget,
                              AreaInfoDialog_t *param);
static void select_email_cb  (GtkWidget        *widget,
                              AreaInfoDialog_t *param);


static gchar*
relative_filter(const char *name, gpointer data)
{
   AreaInfoDialog_t *param = (AreaInfoDialog_t*) data;
   if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(param->relative_link)))
      return g_path_get_basename(name);
   return g_strdup (name);
}

static void
url_changed (GtkWidget *widget,
             gpointer   data)
{
  AreaInfoDialog_t *param = (AreaInfoDialog_t*) data;
  const gchar      *url   = gtk_entry_get_text (GTK_ENTRY (param->url));
  GtkWidget        *button;

  if (! g_ascii_strncasecmp (url, "http://", sizeof ("http://") - 1)    ||
      ! g_ascii_strncasecmp (url, "https://", sizeof ( "https://") - 1))
    button = param->web_site;
  else if (! g_ascii_strncasecmp (url, "ftp://", sizeof ("ftp://") - 1))
    button = param->ftp_site;
  else if (! g_ascii_strncasecmp (url, "gopher://", sizeof ("gopher://") - 1))
    button = param->gopher;
  else if (! g_ascii_strncasecmp (url, "file:/", sizeof ("file:/") - 1))
    button = param->file;
  else if (! g_ascii_strncasecmp (url, "wais://", sizeof ("wais://") - 1))
    button = param->wais;
  else if (! g_ascii_strncasecmp (url, "telnet://", sizeof ("telnet://") - 1))
    button = param->telnet;
  else if (! g_ascii_strncasecmp (url, "mailto:", sizeof ("mailto:") - 1))
    button = param->email;
  else
    button = param->other;

  callback_lock = TRUE;
  g_signal_handlers_block_by_func (param->web_site, G_CALLBACK (select_web_cb), data);
  g_signal_handlers_block_by_func (param->ftp_site, G_CALLBACK (select_ftp_cb), data);
  g_signal_handlers_block_by_func (param->gopher, G_CALLBACK (select_gopher_cb), data);
  g_signal_handlers_block_by_func (param->other, G_CALLBACK (select_other_cb), data);
  g_signal_handlers_block_by_func (param->file, G_CALLBACK (select_file_cb), data);
  g_signal_handlers_block_by_func (param->wais, G_CALLBACK (select_wais_cb), data);
  g_signal_handlers_block_by_func (param->telnet, G_CALLBACK (select_telnet_cb), data);
  g_signal_handlers_block_by_func (param->email, G_CALLBACK (select_email_cb), data);
  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);
  g_signal_handlers_unblock_by_func (param->web_site, G_CALLBACK (select_web_cb), data);
  g_signal_handlers_unblock_by_func (param->ftp_site, G_CALLBACK (select_ftp_cb), data);
  g_signal_handlers_unblock_by_func (param->gopher, G_CALLBACK (select_gopher_cb), data);
  g_signal_handlers_unblock_by_func (param->other, G_CALLBACK (select_other_cb), data);
  g_signal_handlers_unblock_by_func (param->file, G_CALLBACK (select_file_cb), data);
  g_signal_handlers_unblock_by_func (param->wais, G_CALLBACK (select_wais_cb), data);
  g_signal_handlers_unblock_by_func (param->telnet, G_CALLBACK (select_telnet_cb), data);
  g_signal_handlers_unblock_by_func (param->email, G_CALLBACK (select_email_cb), data);
}

static void
set_url (GtkWidget        *widget,
         AreaInfoDialog_t *param,
         const gchar      *prefix)
{
   if (callback_lock)
     {
       callback_lock = FALSE;
     }
   else
     {
       if (gtk_widget_get_state (widget) & GTK_STATE_SELECTED)
         {
           char *p;
           gchar *url = g_strdup (gtk_entry_get_text (GTK_ENTRY(param->url)));

           p = strstr (url, "//");    /* 'https://' */
           if (p)
             {
               p += 2;
             }
           else
             {
               p = strchr (url, ':');    /* 'mailto:' */
               if (p)
                 {
                   p++;
                   if (*p == '/')       /* 'file:/' */
                     p++;
                 }
               else
                 {
                   p = url;
                 }
             }
           p = g_strconcat (prefix, p, NULL);
           gtk_entry_set_text (GTK_ENTRY(param->url), p);
           g_free (p);
           g_free (url);
         }
     }
   gtk_widget_grab_focus(param->url);
}

static void
select_web_cb (GtkWidget        *widget,
               AreaInfoDialog_t *param)
{
  set_url (widget, param, "https://");
}

static void
select_ftp_cb (GtkWidget        *widget,
               AreaInfoDialog_t *param)
{
  set_url(widget, param, "ftp://");
}

static void
select_gopher_cb (GtkWidget        *widget,
                  AreaInfoDialog_t *param)
{
  set_url (widget, param, "gopher://");
}

static void
select_other_cb (GtkWidget        *widget,
                 AreaInfoDialog_t *param)
{
  set_url (widget, param, "");
}

static void
select_file_cb (GtkWidget        *widget,
                AreaInfoDialog_t *param)
{
  set_url (widget, param, "file:/");
}

static void
select_wais_cb (GtkWidget        *widget,
               AreaInfoDialog_t *param)
{
  set_url (widget, param, "wais://");
}

static void
select_telnet_cb (GtkWidget        *widget,
                  AreaInfoDialog_t *param)
{
  set_url (widget, param, "telnet://");
}

static void
select_email_cb (GtkWidget        *widget,
                 AreaInfoDialog_t *param)
{
  set_url (widget, param, "mailto:");
}

static void
append_page (GtkWidget *notebook, GtkWidget *page, const gchar *icon_name,
             const gchar *label_name)
{
   GtkWidget *hbox, *icon, *label;

   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 1);
   gtk_widget_show(hbox);

   icon = gtk_image_new_from_icon_name (icon_name, GTK_ICON_SIZE_MENU);
   gtk_box_pack_start (GTK_BOX (hbox), icon, FALSE, FALSE, 0);
   gtk_widget_show (icon);

   label = gtk_label_new_with_mnemonic (label_name);
   gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 0);
   gtk_widget_show (label);

   gtk_notebook_append_page(GTK_NOTEBOOK(notebook), page, hbox);
}

static void
create_link_tab(AreaInfoDialog_t *dialog, GtkWidget *notebook)
{
   BrowseWidget_t *browse;
   GtkWidget *table, *label;
   GtkWidget *subtable, *frame;
   GSList    *group;

   table = gtk_table_new(11, 1, FALSE);
   gtk_container_set_border_width(GTK_CONTAINER(table), 12);
   gtk_table_set_row_spacings(GTK_TABLE(table), 6);
   gtk_widget_show(table);

   frame = gimp_frame_new(_("Link Type"));
   gtk_table_attach_defaults(GTK_TABLE(table), frame, 0, 2, 0, 1);
   gtk_widget_show(frame);

   subtable = gtk_table_new(2, 4, FALSE);
   gtk_container_add (GTK_CONTAINER(frame), subtable);
   gtk_widget_show(subtable);

   dialog->web_site = create_radio_button_in_table(subtable, NULL, 0, 0,
                                                   _("_Web Site"));
   g_signal_connect(dialog->web_site, "toggled",
                    G_CALLBACK (select_web_cb), (gpointer) dialog);
   group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(dialog->web_site));

   dialog->ftp_site = create_radio_button_in_table(subtable, group, 0, 1,
                                                   _("_Ftp Site"));
   g_signal_connect(dialog->ftp_site, "toggled",
                    G_CALLBACK (select_ftp_cb), (gpointer) dialog);
   group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(dialog->ftp_site));

   dialog->gopher = create_radio_button_in_table(subtable, group, 0, 2,
                                                 _("_Gopher"));
   g_signal_connect(dialog->gopher, "toggled",
                    G_CALLBACK (select_gopher_cb), (gpointer) dialog);
   group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(dialog->gopher));

   dialog->other = create_radio_button_in_table(subtable, group, 0, 3,
                                                _("Ot_her"));
   g_signal_connect(dialog->other, "toggled",
                    G_CALLBACK (select_other_cb), (gpointer) dialog);
   group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(dialog->other));

   dialog->file = create_radio_button_in_table(subtable, group, 1, 0,
                                               _("F_ile"));
   g_signal_connect(dialog->file, "toggled",
                    G_CALLBACK (select_file_cb), (gpointer) dialog);
   group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(dialog->file));

   dialog->wais = create_radio_button_in_table(subtable, group, 1, 1,
                                               _("WAI_S"));
   g_signal_connect(dialog->wais, "toggled",
                    G_CALLBACK (select_wais_cb), (gpointer) dialog);
   group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(dialog->wais));

   dialog->telnet = create_radio_button_in_table(subtable, group, 1, 2,
                                                 _("Tel_net"));
   g_signal_connect(dialog->telnet, "toggled",
                    G_CALLBACK (select_telnet_cb), (gpointer) dialog);
   group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(dialog->telnet));

   dialog->email = create_radio_button_in_table(subtable, group, 1, 3,
                                                _("e-_mail"));
   g_signal_connect(dialog->email, "toggled",
                    G_CALLBACK (select_email_cb), (gpointer) dialog);

   label = create_label_in_table(
      table, 2, 0,
      _("_URL to activate when this area is clicked: (required)"));

   browse = browse_widget_new( _("Select HTML file"));
   browse_widget_set_filter(browse, relative_filter, (gpointer) dialog);
   gtk_table_attach_defaults(GTK_TABLE(table), browse->hbox, 0, 1, 3, 4);
   dialog->url = browse->file;
   g_signal_connect(dialog->url, "changed", G_CALLBACK(url_changed),
                    dialog);
   gtk_label_set_mnemonic_widget(GTK_LABEL(label), dialog->url);

   dialog->relative_link = create_check_button_in_table(table, 4, 0,
                                                        _("Relati_ve link"));
   gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(dialog->relative_link),
                                TRUE);

   label = create_label_in_table(
      table, 6, 0,
      _("_Target frame name/ID: (optional - used for FRAMES only)"));
   dialog->target = create_entry_in_table(table, label, 7, 0);

   label = create_label_in_table(table, 9, 0, _("ALT te_xt: (optional)"));
   dialog->comment = create_entry_in_table(table, label, 10, 0);

   append_page (notebook, table, GIMP_ICON_WEB, _("_Link"));
}

static void
geometry_changed(Object_t *obj, gpointer data)
{
   AreaInfoDialog_t *dialog = (AreaInfoDialog_t*) data;
   if (dialog->geometry_lock) {
      dialog->geometry_lock = FALSE;
   } else {
      if (dialog->obj == obj) {
         object_update_info_widget(obj, dialog->infotab);
         obj->class->assign(obj, dialog->clone);
      }
   }
}

static void
toggle_preview_cb(GtkWidget *widget, AreaInfoDialog_t *param)
{
   param->preview = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget));
   edit_area_info_dialog_emit_geometry_signal(param);
}

static void
create_info_tab(AreaInfoDialog_t *dialog, GtkWidget *notebook)
{
   GtkWidget *vbox, *frame, *preview;
   Object_t *obj = dialog->obj;

   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 1);
   gtk_container_set_border_width(GTK_CONTAINER(vbox), 12);
   gtk_widget_show(vbox);

   frame = gimp_frame_new(_("Dimensions"));
   gtk_box_pack_start(GTK_BOX(vbox), frame, FALSE, FALSE, 0);
   gtk_widget_show(frame);

   preview = gtk_check_button_new_with_mnemonic(_("Pre_view"));
   g_signal_connect(preview, "toggled",
                    G_CALLBACK (toggle_preview_cb), (gpointer) dialog);
   gtk_box_pack_start(GTK_BOX(vbox), preview, FALSE, FALSE, 0);
   gtk_widget_show(preview);

   dialog->infotab = obj->class->create_info_widget(frame);

   append_page (notebook, vbox, obj->class->get_stock_icon_name (),
                gettext (obj->class->name));
}

static void
create_java_script_tab(AreaInfoDialog_t *dialog, GtkWidget *notebook)
{
   GtkWidget *vbox, *table, *label;

   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 1);
   gtk_widget_show(vbox);

   table = gtk_table_new(11, 1, FALSE);
   gtk_box_pack_start(GTK_BOX(vbox), table, FALSE, FALSE, 0);
   gtk_container_set_border_width(GTK_CONTAINER(table), 12);
   gtk_table_set_row_spacings(GTK_TABLE(table), 6);
   gtk_widget_show(table);

   label = create_label_in_table(table, 0, 0, "o_nMouseover:");
   dialog->mouse_over = create_entry_in_table(table, label, 1, 0);

   label = create_label_in_table(table, 3, 0, "on_Mouseout:");
   dialog->mouse_out = create_entry_in_table(table, label, 4, 0);

   label = create_label_in_table(table, 6, 0, "on_Focus (HTML 4.0):");
   dialog->focus = create_entry_in_table(table, label, 7, 0);

   label = create_label_in_table(table, 9, 0, "on_Blur (HTML 4.0):");
   dialog->blur = create_entry_in_table(table, label, 10, 0);

   append_page (notebook, vbox, IMAP_STOCK_JAVA, _("_JavaScript"));
}

static gboolean
object_was_changed(AreaInfoDialog_t *dialog)
{
   Object_t *clone = dialog->clone;
   Object_t *obj = dialog->obj;
   gint old_x, old_y, old_width, old_height;
   gint new_x, new_y, new_width, new_height;

   object_get_dimensions(clone, &old_x, &old_y, &old_width, &old_height);
   object_get_dimensions(obj, &new_x, &new_y, &new_width, &new_height);

   return new_x != old_x || new_y != old_y || new_width != old_width ||
      new_height != old_height || clone->selected != obj->selected;
}

static void
edit_area_apply_cb(gpointer data)
{
   AreaInfoDialog_t *param = (AreaInfoDialog_t*) data;
   Object_t *obj = param->obj;

   object_set_url(obj, gtk_entry_get_text(GTK_ENTRY(param->url)));
   object_set_target(obj, gtk_entry_get_text(GTK_ENTRY(param->target)));
   object_set_comment(obj, gtk_entry_get_text(GTK_ENTRY(param->comment)));
   object_set_mouse_over(obj,
                         gtk_entry_get_text(GTK_ENTRY(param->mouse_over)));
   object_set_mouse_out(obj, gtk_entry_get_text(GTK_ENTRY(param->mouse_out)));
   object_set_focus(obj, gtk_entry_get_text(GTK_ENTRY(param->focus)));
   object_set_blur(obj, gtk_entry_get_text(GTK_ENTRY(param->blur)));
   object_update(obj, param->infotab);
   update_shape(obj);

   if (object_was_changed(param))
      preview_redraw();
}

static void
edit_area_ok_cb(gpointer data)
{
   AreaInfoDialog_t *param = (AreaInfoDialog_t*) data;
   Object_t *obj = param->obj;

   object_list_remove_geometry_cb(obj->list, param->geometry_cb_id);

   /* Fix me: nasty hack */
   if (param->add)
      command_list_add(edit_object_command_new(obj));

   edit_area_apply_cb(data);
   object_unlock(obj);
   object_unref(param->clone);
}

static void
edit_area_cancel_cb(gpointer data)
{
   AreaInfoDialog_t *dialog = (AreaInfoDialog_t*) data;
   Object_t *obj = dialog->obj;
   gboolean changed = object_was_changed(dialog);
   gboolean selected = obj->selected;

   object_list_remove_geometry_cb(obj->list, dialog->geometry_cb_id);
   object_unlock(obj);
   object_assign(dialog->clone, obj);
   obj->selected = selected;
   object_unref(dialog->clone);

   if (changed)
      preview_redraw();
}

static void
switch_page(GtkWidget *widget, gpointer page, gint page_num,
            gpointer data)
{
   AreaInfoDialog_t *param = (AreaInfoDialog_t*) data;
   if (page_num == 0) {
      gtk_widget_grab_focus(param->url);
   } else if (page_num == 1) {
      Object_t *obj = param->obj;
      obj->class->set_initial_focus(obj, param->infotab);
   } else {
      gtk_widget_grab_focus(param->mouse_over);
   }
}

AreaInfoDialog_t*
create_edit_area_info_dialog(Object_t *obj)
{
   AreaInfoDialog_t *data = g_new(AreaInfoDialog_t, 1);
   GtkWidget *notebook;

   data->geometry_lock = FALSE;
   data->preview = FALSE;
   data->obj = obj;
   data->browse = NULL;
   data->dialog = make_default_dialog(_("Area Settings"));
   default_dialog_set_ok_cb(data->dialog, edit_area_ok_cb, data);
   default_dialog_set_apply_cb(data->dialog, edit_area_apply_cb, data);
   default_dialog_set_cancel_cb(data->dialog, edit_area_cancel_cb, data);

   data->notebook = notebook = gtk_notebook_new();
   g_signal_connect_after(notebook, "switch-page",
                          G_CALLBACK(switch_page), (gpointer) data);

   gtk_box_pack_start(GTK_BOX(data->dialog->vbox), notebook, TRUE, TRUE, 0);
   create_link_tab(data, notebook);
   create_info_tab(data, notebook);
   create_java_script_tab(data, notebook);
   gtk_widget_show(notebook);

   return data;
}

void
edit_area_info_dialog_show(AreaInfoDialog_t *dialog, Object_t *obj,
                           gboolean add)
{
   gchar *title;

   object_unlock(dialog->obj);
   object_lock(obj);
   dialog->obj = obj;
   dialog->clone = object_clone(obj);
   dialog->add = add;
   object_fill_info_tab(obj, dialog->infotab);
   gtk_entry_set_text(GTK_ENTRY(dialog->url), obj->url);
   gtk_entry_set_text(GTK_ENTRY(dialog->target), obj->target);
   gtk_entry_set_text(GTK_ENTRY(dialog->comment), obj->comment);
   gtk_entry_set_text(GTK_ENTRY(dialog->mouse_over), obj->mouse_over);
   gtk_entry_set_text(GTK_ENTRY(dialog->mouse_out), obj->mouse_out);
   gtk_entry_set_text(GTK_ENTRY(dialog->focus), obj->focus);
   gtk_entry_set_text(GTK_ENTRY(dialog->blur), obj->blur);
   gtk_widget_grab_focus(dialog->url);

   dialog->geometry_cb_id =
      object_list_add_geometry_cb(obj->list, geometry_changed, dialog);

   title = g_strdup_printf (_("Area #%d Settings"),
                            object_get_position_in_list(obj) + 1);
   default_dialog_set_title(dialog->dialog, title);
   g_free (title);
   default_dialog_show(dialog->dialog);
}

void
edit_area_info_dialog_emit_geometry_signal(AreaInfoDialog_t *dialog)
{
   if (dialog->preview) {
      dialog->geometry_lock = TRUE;
      object_emit_geometry_signal(dialog->obj);
   }
}