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lib refactoring

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git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@4526 c8812cc2-4d05-0410-92ff-de0c093fc19c
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timlinux 2006-01-08 01:27:07 +00:00
parent ddb551085d
commit c0fb6c6f48
1 changed files with 0 additions and 71 deletions
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src/qgscontexthelp.h
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/***************************************************************************
qgscontexthelp.h
Display context help for a dialog by invoking the
QgsHelpViewer
-------------------
begin : 2005-06-19
copyright : (C) 2005 by Gary E.Sherman
email : sherman at mrcc.com
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
/* $Id$ */
#ifndef QGSCONTEXTHELP_H
#define QGSCONTEXTHELP_H
#include <qobject.h>
class Q3Process;
class Q3Socket;
#ifdef Q_OS_MACX
#define QGSCONTEXTHELP_REUSE 1
#endif
/*!
* \class QgsContextHelp
* \brief Provides a context based help browser for a dialog.
*
* The help text is stored in SQLite and accessed by a context identifier
* unique to each dialog. This is a singleton class which invokes the help
* viewer using QProcess and ensures that only one viewer is open.
* The viewer will be terminated if open when the main application quits.
*
* If the compile-time flag QGSCONTEXTHELP_REUSE is defined, the help viewer
* will be reused if it is still open. If this flag is not set, the viewer
* process will be terminated if open and restarted; this makes it the top
* window for window managers such as Linux/GNOME which will make a window
* active but not bring it to the top if raised programatically.
*/
class QgsContextHelp : public QObject {
Q_OBJECT
public:
static void run(int contextId);
private slots:
void readPort();
void processExited();
private:
//! Constructor
QgsContextHelp(int contextId);
//! Destructor
~QgsContextHelp();
Q3Process *start(int contextId);
void showContext(int contextId);
static QgsContextHelp *gContextHelp; // Singleton instance
Q3Process *mProcess;
#ifdef QGSCONTEXTHELP_REUSE
// Communications socket when reusing existing process
Q3Socket *mSocket;
#else
// Replacement process when terminating and restarting
Q3Process *mNextProcess;
#endif
};
#endif //QGSCONTEXTHELP_H