Author: sh-sh-sh Date: Wed May 23 17:57:12 2007 New Revision: 38117 URL: http://svn.opensuse.org/viewcvs/yast?rev=38117&view=rev Log: base for widget properties Added: branches/tmp/sh/mod-ui/core/libyui/src/YProperty.h Added: branches/tmp/sh/mod-ui/core/libyui/src/YProperty.h URL: http://svn.opensuse.org/viewcvs/yast/branches/tmp/sh/mod-ui/core/libyui/src/YProperty.h?rev=38117&view=auto ============================================================================== --- branches/tmp/sh/mod-ui/core/libyui/src/YProperty.h (added) +++ branches/tmp/sh/mod-ui/core/libyui/src/YProperty.h Wed May 23 17:57:12 2007 @@ -0,0 +1,143 @@ +/*---------------------------------------------------------------------\ +| | +| __ __ ____ _____ ____ | +| \ \ / /_ _/ ___|_ _|___ \ | +| \ V / _` \___ \ | | __) | | +| | | (_| |___) || | / __/ | +| |_|\__,_|____/ |_| |_____| | +| | +| core system | +| | +| (c) SuSE Linux Products GmbH | +\----------------------------------------------------------------------/ + + File: YProperty.h + + Author: Stefan Hundhammer + +/-*/ + +#ifndef YProperty_h +#define YProperty_h + +#include <string> + +namespace YUI +{ + /** + * Base class for all property classes. Necessary to store different + * template instances in the same container class. + **/ + class YPropertyBase + { + protected: + /** + * Constructor: Create a property with the specified name. + **/ + YPropertyBase( const std::string & name ) + : _name( name ) + {} + + virtual ~YPropertyBase() {} + + public: + /** + * Returns the name of this property. + **/ + std::string name() const { return _name; } + + private: + + std::string _name; + }; + + + /** + * Template class for properties of different types for classes of type + * Widget_T. + **/ + template class YProperty: + public YPropertyBase + { + public: + + /** + * Constructor: Create a property with the specified name. + * The value of this property will be retrieved with the specified + * 'getMethod' and set with the specified 'setMethod'. + * + * Example: + * + * class MyWidget: public YWidget + * { + * private: + * std::string _label; + * + * public: + * ... + * std::string label() const { return _label; } + * void setLabel( std::string newLabel ) { _label = newLabel; } + * }; + * + * YProperty labelProp( "Label", + * &(MyWidget::label), + * &(MyWidget::setLabel) ); + * MyWidget w = new MyWidget(...); + * std::string myLabel = labelProp.get( w, "Label" ); + **/ + YProperty( const std::string & name, + Value_T (Widget_T::*getMethod)(), + void (Widget_T::*setMethod)( Value_T ) ) + : YPropertyBase( name ) + , _getMethod( getMethod ) + , _setMethodByValue( setMethod ) + , _setMethodByConstRef( 0 ) + {} + + /** + * Constructor with a setMethod that accepts a const ref rather than + * the value directly. + **/ + YProperty( const std::string & name, + Value_T (Widget_T::*getMethod)(), + void (Widget_T::*setMethod)( const Value_T & ) ) + : YPropertyBase( name ) + , _getMethod( getMethod ) + , _setMethodByValue( 0 ) + , _setMethodByConstRef( setMethod ) + {} + + /** + * Destructor. + **/ + virtual ~YProperty() {} + + /** + * Retrieve the current value of this property from 'widget'. + **/ + Value_T get( Widget_T * widget ) const + { + return (widget->*_getMethod)(); + } + + /** + * Set this property in 'widget'. + **/ + void set( Widget_T * widget, Value_T newValue ) + { + if ( _setMethodByValue ) + (widget->*_setMethodByValue)( newValue ); + else + (widget->*_setMethodByConstRef)( newValue ); + } + + private: + Value_T (Widget_T::*_getMethod)(); + void (Widget_T::*_setMethodByValue)( Value_T ); + void (Widget_T::*_setMethodByConstRef)( const Value_T & ); + }; + + +} // namespace YUI + +#endif // YProperty_h -- To unsubscribe, e-mail: yast-commit+unsubscribe@opensuse.org For additional commands, e-mail: yast-commit+help@opensuse.org