/*
 * ggv-msg-window.c: display of GhostScript's output
 *
 * Copyright 2001 - 2005 The Free Software Foundation
 *
 * 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 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, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <config.h>

#include <gnome.h>
#include <gtk/gtk.h>

#include "ggv-msg-window.h"

/* clears the text in the tbox */
static void
del_gs_status_text(GgvMsgWindow * win)
{
  GtkTextBuffer *buffer;

  buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->error_text));
  gtk_text_buffer_set_text(buffer, "", -1);
  gtk_text_view_set_buffer(GTK_TEXT_VIEW(win->error_text), buffer);
}

static gint
delete_statustext_event(GtkWidget * widget, GdkEvent * event, gpointer data)
{
  gtk_widget_hide(((GgvMsgWindow *) data)->window);
  return TRUE;
}

static void
close_clicked(GtkButton * button, gpointer data)
{
  gtk_widget_hide(((GgvMsgWindow *) data)->window);
}

static void
help_clicked(GtkButton * button, gpointer data)
{
  gnome_help_display("probs.html", NULL, NULL /* error */ );
}

/* FIXME: this should be configurable */
#define STATUS_WIDTH 520
#define STATUS_HEIGHT 320

GgvMsgWindow *
ggv_msg_window_new(const gchar * title)
{
  GgvMsgWindow *win;
  GtkWidget *vbox, *hbox, *vscrollbar, *buttonbox, *button;
  GtkAccelGroup *accel_group;

  accel_group = gtk_accel_group_new();

  win = g_new0(GgvMsgWindow, 1);

  win->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

  gtk_window_set_default_size(GTK_WINDOW(win->window),
                              STATUS_WIDTH, STATUS_HEIGHT);
  gtk_window_set_policy(GTK_WINDOW(win->window), TRUE, TRUE, FALSE);

  g_signal_connect(GTK_OBJECT(win->window), "delete_event",
                   G_CALLBACK(delete_statustext_event), win);

  vbox = gtk_vbox_new(FALSE, 0);
  gtk_widget_show(vbox);
  gtk_container_add(GTK_CONTAINER(win->window), vbox);

  /* set up gtk_text */
  hbox = gtk_hbox_new(FALSE, 0);
  gtk_widget_show(hbox);
  gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);

  win->error_text = gtk_text_view_new();
  gtk_widget_show(win->error_text);
  gtk_box_pack_start(GTK_BOX(hbox), win->error_text, TRUE, TRUE, 0);

  vscrollbar = gtk_vscrollbar_new(GTK_TEXT_VIEW(win->error_text)->vadjustment);
  gtk_box_pack_start(GTK_BOX(hbox), vscrollbar, FALSE, FALSE, 0);
  gtk_widget_show(vscrollbar);

  /* set up buttons */
  buttonbox = gtk_hbutton_box_new();
  gtk_button_box_set_layout(GTK_BUTTON_BOX(buttonbox), GTK_BUTTONBOX_SPREAD);
  gtk_widget_show(buttonbox);
  gtk_box_pack_start(GTK_BOX(vbox), buttonbox, FALSE, FALSE, 4);

  button = gtk_button_new_from_stock(GTK_STOCK_CLOSE);
  gtk_widget_show(button);
  gtk_container_add(GTK_CONTAINER(buttonbox), button);
  GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
  gtk_widget_add_accelerator(button, "clicked", accel_group,
                             GDK_Return, 0, GTK_ACCEL_VISIBLE);
  gtk_widget_add_accelerator(button, "clicked", accel_group,
                             GDK_Escape, 0, GTK_ACCEL_VISIBLE);
  g_signal_connect(GTK_OBJECT(button), "clicked",
                   G_CALLBACK(close_clicked), win);
  gtk_widget_grab_default(button);

  button = gtk_button_new_from_stock(GTK_STOCK_HELP);
  gtk_widget_show(button);
  gtk_container_add(GTK_CONTAINER(buttonbox), button);
  g_signal_connect(GTK_OBJECT(button), "clicked",
                   G_CALLBACK(help_clicked), win);

  gtk_window_add_accel_group(GTK_WINDOW(win->window), accel_group);

  ggv_msg_window_init(win, title);

  return win;
}

void
ggv_msg_window_free(GgvMsgWindow * win)
{
  g_return_if_fail(win != NULL);

  gtk_widget_destroy(win->window);
  g_free(win);
}

/* set up status window, clear text field, but do not show window */
void
ggv_msg_window_init(GgvMsgWindow * win, const gchar * title)
{
  g_return_if_fail(win != NULL);

  del_gs_status_text(win);

  if(title)
    gtk_window_set_title(GTK_WINDOW(win->window), title);
}

/* shows the status window */
void
ggv_msg_window_show(GgvMsgWindow * win)
{
  g_return_if_fail(win != NULL);

  if(!GTK_WIDGET_VISIBLE(win->window)) {
    ggv_msg_window_init(win, NULL);
    gtk_widget_show(win->window);
  }
}

/* adds new_text to the text box */
void
ggv_msg_window_add_text(GgvMsgWindow * win, const gchar * text, gint show)
{
  GtkTextBuffer *buffer;

  g_return_if_fail(win != NULL);
  g_return_if_fail(text != NULL);

  if(show)
    ggv_msg_window_show(win);

  buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->error_text));
  gtk_text_buffer_set_text(buffer, text, -1);
  gtk_text_view_set_buffer(GTK_TEXT_VIEW(win->error_text), buffer);
}