libyui
3.0.10
|
00001 /* 00002 Copyright (C) 2000-2012 Novell, Inc 00003 This library is free software; you can redistribute it and/or modify 00004 it under the terms of the GNU Lesser General Public License as 00005 published by the Free Software Foundation; either version 2.1 of the 00006 License, or (at your option) version 3.0 of the License. This library 00007 is distributed in the hope that it will be useful, but WITHOUT ANY 00008 WARRANTY; without even the implied warranty of MERCHANTABILITY or 00009 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 00010 License for more details. You should have received a copy of the GNU 00011 Lesser General Public License along with this library; if not, write 00012 to the Free Software Foundation, Inc., 51 Franklin Street, Fifth 00013 Floor, Boston, MA 02110-1301 USA 00014 */ 00015 00016 00017 /*-/ 00018 00019 File: YGraphPlugin.h 00020 00021 Author: Arvin Schnell <aschnell@suse.de> 00022 00023 /-*/ 00024 00025 #ifndef YGraphPlugin_h 00026 #define YGraphPlugin_h 00027 00028 #include "YUIPlugin.h" 00029 00030 class YWidget; 00031 class YGraph; 00032 00033 00034 /** 00035 * Abstract base class for simplified access to UI plugins for graph widget. 00036 **/ 00037 class YGraphPlugin : public YUIPlugin 00038 { 00039 protected: 00040 /** 00041 * Constructor: Load the specified plugin library 00042 * from the standard UI plugin directory (/usr/lib/yui/). 00043 **/ 00044 YGraphPlugin( const char * pluginLibBaseName ) 00045 : YUIPlugin( pluginLibBaseName ) {} 00046 00047 /** 00048 * Destructor. Calls dlclose() which will unload the plugin library if it 00049 * is no longer used, i.e. if the reference count dlopen() uses reaches 0. 00050 **/ 00051 virtual ~YGraphPlugin() {} 00052 00053 public: 00054 /** 00055 * Create a graph widget. 00056 * Derived classes need to implement this. 00057 * 00058 * This might return 0 if the plugin lib could not be loaded or if the 00059 * appropriate symbol could not be located in the plugin lib. 00060 **/ 00061 virtual YGraph * createGraph( YWidget * parent, const std::string & filename, 00062 const std::string & layoutAlgorithm ) = 0; 00063 }; 00064 00065 00066 #endif // YGraphPlugin_h