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YGraphPlugin.h
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/*
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Copyright (C) 2000-2012 Novell, Inc
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This library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) version 3.0 of the License. This library
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is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details. You should have received a copy of the GNU
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Lesser General Public License along with this library; if not, write
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to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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Floor, Boston, MA 02110-1301 USA
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*/
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/*-/
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File: YGraphPlugin.h
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Author: Arvin Schnell <aschnell@suse.de>
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/-*/
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#ifndef YGraphPlugin_h
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#define YGraphPlugin_h
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#include "YUIPlugin.h"
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class
YWidget
;
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class
YGraph
;
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/**
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* Abstract base class for simplified access to UI plugins for graph widget.
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**/
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class
YGraphPlugin
:
public
YUIPlugin
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{
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protected
:
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/**
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* Constructor: Load the specified plugin library
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* from the standard UI plugin directory (/usr/lib/yui/).
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**/
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YGraphPlugin
(
const
char
*
pluginLibBaseName
)
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:
YUIPlugin
( pluginLibBaseName ) {}
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/**
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* Destructor. Calls dlclose() which will unload the plugin library if it
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* is no longer used, i.e. if the reference count dlopen() uses reaches 0.
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**/
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virtual
~YGraphPlugin
() {}
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public
:
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/**
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* Create a graph widget.
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* Derived classes need to implement this.
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*
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* This might return 0 if the plugin lib could not be loaded or if the
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* appropriate symbol could not be located in the plugin lib.
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**/
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virtual
YGraph
*
createGraph
(
YWidget
* parent,
const
std::string & filename,
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const
std::string & layoutAlgorithm ) = 0;
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};
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#endif // YGraphPlugin_h
src
YGraphPlugin.h
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