var_text.hpp
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上传日期:2020-07-06
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midi
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Unix_Linux
- /*****************************************************************************
- * var_text.hpp
- *****************************************************************************
- * Copyright (C) 2003 the VideoLAN team
- * $Id: 0c4e34aa9ca02466419e828cbd2a65788c5cf9bd $
- *
- * Authors: Cyril Deguet <asmax@via.ecp.fr>
- * Olivier Teulière <ipkiss@via.ecp.fr>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- #ifndef VAR_TEXT_HPP
- #define VAR_TEXT_HPP
- #include "variable.hpp"
- #include "var_percent.hpp"
- #include "observer.hpp"
- #include "ustring.hpp"
- /// String variable
- class VarText: public Variable, public Subject<VarText>,
- public Observer<VarPercent>,
- public Observer<VarText>
- {
- public:
- // Set substVars to true to replace "$X" variables in the text
- VarText( intf_thread_t *pIntf, bool substVars = true );
- virtual ~VarText();
- /// Get the variable type
- virtual const string &getType() const { return m_type; }
- /// Set the internal value
- virtual void set( const UString &rText );
- virtual const UString get() const;
- /// Methods called when an observed variable is modified
- virtual void onUpdate( Subject<VarPercent> &rVariable, void* );
- virtual void onUpdate( Subject<VarText> &rVariable, void* );
- private:
- /// Stop observing other variables
- void delObservers();
- /// Variable type
- static const string m_type;
- /// The text of the variable
- UString m_text;
- /// Actual text after having replaced the variables
- UString m_lastText;
- /// Flag to activate or not "$X" variables substitution
- bool m_substVars;
- };
- #endif