gtk/messagebox.hh

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/* $Id: messagebox.hh,v 1.8 2003/06/08 22:35:23 richard Exp $ -*- C++ -*-
  __   _
  |_) /|  Copyright (C) 2001-2002  |  richard@
  | \/¯|  Richard Atterer          |  atterer.net
  ¯ '` ¯
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License, version 2. See
  the file COPYING for details.

*/
#ifndef GTK_MESSAGEBOX_HH
#define GTK_MESSAGEBOX_HH

#include <config.h>

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

#include <debug.hh>
#include <nocopy.hh>

#ifdef MessageBox
#  undef MessageBox // fsck Windows!!
#endif
#ifdef ERROR
#  undef ERROR
#endif
//______________________________________________________________________

class MessageBox : NoCopy {
public:

  class Ref;
  friend class Ref;

  enum {
    NONE       = 0,
    HELP       = 1 << 0,
    OK         = 1 << 1,
    CLOSE      = 1 << 2,
    CANCEL     = 1 << 3
  };

  static const char* const MESSAGE;
  static const char* const INFO;
  static const char* const WARNING;
  static const char* const QUESTION;
  static const char* const ERROR;

  inline MessageBox(const char* type, int buttons, const char* heading,
                    const char* message = 0);
  inline MessageBox(const char* type, int buttons, const string& heading,
                    const char* message);
  inline MessageBox(const char* type, int buttons, const char* heading,
                    const string& message);
  inline MessageBox(const char* type, int buttons, const string& heading);
  inline MessageBox(const char* type, int buttons, const string& heading,
                    const string& message);

  ~MessageBox();

  inline MessageBox* show();
  MessageBox* show_noAutoClose();

  GtkWidget* addButton(const char* buttonText, int response);
  inline GtkWidget* addButton(const char* buttonText,
                              GtkResponseType response);
  GtkWidget* addStockButton(const char* buttonType, int response);
  inline GtkWidget* addStockButton(const char* buttonType,
                                   GtkResponseType response);

  typedef void (*ResponseHandler)(GtkDialog*, int, gpointer);
  inline MessageBox* onResponse(ResponseHandler handler, gpointer data);

private:
  void init(const char* type, int buttons, const char* heading,
            const char* message);

  static void destroyHandler(GtkDialog*, MessageBox* m);
  static void autocloseHandler(GtkDialog*, int, MessageBox* m);
  static void closeHandler(GtkDialog*, MessageBox* m);

  GtkWidget* dialog;
  // The button to simulate a click on if Escape is pressed, or null
  GtkWidget* escapeButton;
  Ref* ref;
  string label;
};
//______________________________________________________________________


class MessageBox::Ref {
  friend class MessageBox;
public:
  Ref() : messageBox(0) { }
  inline ~Ref();
  inline void set(MessageBox* m);
  MessageBox* get() const { return messageBox; }
private:
  // Don't copy
  inline MessageBox& operator=(const MessageBox&);

  MessageBox* messageBox;
};
//______________________________________________________________________

MessageBox::MessageBox(const char* type, int buttons, const char* heading,
  const char* message) { init(type, buttons, heading, message); }
MessageBox::MessageBox(const char* type, int buttons, const string& heading,
  const char* message) { init(type, buttons, heading.c_str(), message); }
MessageBox::MessageBox(const char* type, int buttons, const char* heading,
  const string& message) { init(type, buttons, heading, message.c_str()); }
MessageBox::MessageBox(const char* type, int buttons,
  const string& heading) { init(type, buttons, heading.c_str(), 0); }
MessageBox::MessageBox(const char* type, int buttons, const string& heading,
                       const string& message) {
  init(type, buttons, heading.c_str(), message.c_str());
}

GtkWidget* MessageBox::addButton(const char* buttonText,
                                 GtkResponseType response) {
  return addButton(buttonText, static_cast<int>(response));
}

GtkWidget* MessageBox::addStockButton(const char* buttonType,
                                      GtkResponseType response) {
  return addStockButton(buttonType, static_cast<int>(response));
}

MessageBox* MessageBox::onResponse(ResponseHandler handler, gpointer data) {
  g_signal_connect(G_OBJECT(dialog), "response", G_CALLBACK(handler), data);
  return this;
}

MessageBox* MessageBox::show() {
  g_signal_connect(G_OBJECT(dialog), "response",
                   G_CALLBACK(&autocloseHandler), (gpointer)this);
  return show_noAutoClose();
}

MessageBox::Ref::~Ref() {
  set(0);
}

void MessageBox::Ref::set(MessageBox* m) {
  if (messageBox == m) return;
  if (messageBox != 0) {
    messageBox->ref = 0;
    delete messageBox;
  }
  if (m != 0) {
    Assert(m->ref == 0);
    m->ref = this;
  }
  messageBox = m;
}

#endif

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