context_help.h

Linux平台下的内核及程序调试器

/* ---------------------------------------------------------------------
 * Definition of ContextHelp                              context_help.h
 * Context-sensitive help button
 * --------------------------------------------------------------------- 
 * This file is part of Valkyrie, a front-end for Valgrind
 * Copyright (c) 2000-2006, OpenWorks LLP <[e-mail]>
 * This program is released under the terms of the GNU GPL v.2
 * See the file LICENSE.GPL for the full license details.
 */

#ifndef __VK_CONTEXT_HELP_H
#define __VK_CONTEXT_HELP_H


#include <qptrdict.h>
#include <qtoolbutton.h>


/* class ContextHelpButton --------------------------------------------- */
class HandBook;
class ContextHelpButton: public QToolButton
{
   Q_OBJECT
public:
   ContextHelpButton( QWidget* parent, HandBook* book );
   ~ContextHelpButton();
public slots:
   void mouseReleased();
};


/* class ContextHelp --------------------------------------------------- */
class ContextHelp: public QObject
{
   Q_OBJECT
public:
   ContextHelp();
   ~ContextHelp();
   static void add( QWidget *, const QString &);
   static void setUp();

   enum State { Inactive, Waiting };
   /* just so we can return a pointer to a QString :( */
   struct UrlItem : public QShared {
      UrlItem() : QShared() { }
      ~UrlItem();
      QString url;
   };

   bool eventFilter( QObject *, QEvent * );
   void newItem( QWidget * widget, const QString & text );
   void say( QWidget *, const QString& );
   void shutDown();
   void remove( QWidget * );

   HandBook* hbook;   /* ptr to the application-wide handbook */
   QPtrDict<QWidget> * tlw;
   QPtrDict<UrlItem> * wdict;
   QPtrDict<ContextHelpButton> * buttons;
   State state;

private slots:
   void cleanupWidget();
};

#endif