WPropertyGroupBase.h 10.1 KB
 Sebastian Eichelbaum committed Dec 01, 2011 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 //--------------------------------------------------------------------------- // // Project: OpenWalnut ( http://www.openwalnut.org ) // // Copyright 2009 OpenWalnut Community, BSV@Uni-Leipzig and CNCF@MPI-CBS // For more information see http://www.openwalnut.org/copying // // This file is part of OpenWalnut. // // OpenWalnut is free software: you can redistribute it and/or modify // it under the terms of the GNU Lesser General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // OpenWalnut 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 Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public License // along with OpenWalnut. If not, see . // //--------------------------------------------------------------------------- #ifndef WPROPERTYGROUPBASE_H #define WPROPERTYGROUPBASE_H #include #include #include #include #include #include #include #include "WConditionSet.h" #include "WPropertyBase.h" #include "WPropertyTypes.h" #include "WPropertyVariable.h" #include "WSharedSequenceContainer.h" #include "WExportCommon.h" /** * This is the base class and interface for property groups. This class itself is abstract and derived from WPropertyBase. So if you create a * group of properties, this ensures that your group is a property itself. This interface defines no way to add, remove or edit the property list * itself. This allows the deriving class to prohibit modifications and to provide a custom interface, or even model-controller like * implementations. * * Another advantage is, that the GUI implementations which support WPropertyGroupBase can display your custom properties directly. */ class OWCOMMON_EXPORT WPropertyGroupBase: public WPropertyBase { public: /** * For shortening: a type defining a shared vector of WSubject pointers. */ typedef std::vector< boost::shared_ptr< WPropertyBase > > PropertyContainerType; /** * The alias for a shared container. */ typedef WSharedSequenceContainer< PropertyContainerType > PropertySharedContainerType; /** * The const iterator type of the container. */ typedef PropertyContainerType::const_iterator PropertyConstIterator; /** * The iterator type of the container. */ typedef PropertyContainerType::iterator PropertyIterator; /** * Convenience typedef for a boost::shared_ptr< WPropertyGroupBase >. */ typedef boost::shared_ptr< WPropertyGroupBase > SPtr; /** * Convenience typedef for a boost::shared_ptr< const WPropertyGroupBase >. */ typedef boost::shared_ptr< const WPropertyGroupBase > ConstSPtr; /////////////////////////////////////////////////////////////////////////////////////////////////// // Construction /////////////////////////////////////////////////////////////////////////////////////////////////// /** * Constructor. Creates an empty list of properties. * * \param name the name of the property group. The GUI is using this name for naming the tabs/group boxes * \param description the description of the group. */ WPropertyGroupBase( std::string name, std::string description ); /** * Copy constructor. Creates a deep copy of this property. As boost::signals2 and condition variables are non-copyable, new instances get * created. The subscriptions to a signal are LOST as well as all listeners to a condition. * The conditions you can grab using getValueChangeConditon and getCondition are not the same as in the original! This is because * the class corresponds to the observer/observable pattern. You won't expect a clone to fire a condition if a original flag is changed * (which after cloning is completely decoupled from the clone). * * \note the properties inside this list are also copied deep * * \param from the instance to copy. */ explicit WPropertyGroupBase( const WPropertyGroupBase& from ); /** * Destructor. */ virtual ~WPropertyGroupBase(); /////////////////////////////////////////////////////////////////////////////////////////////////// // The WPropertyGroupBase interface /////////////////////////////////////////////////////////////////////////////////////////////////// /** * This returns the condition fired whenever one children fires its update condition. Useful to get notified about all changes that happen. * * \return the condition fired if a child fires its update condition. */ virtual boost::shared_ptr< WCondition > getChildUpdateCondition() const; /** * Helper function that finds a property by its name. Use this method to find out whether the property exists or not, since * findProperty throws an exception. * * \param name name of searched property. * * \return Answer to the question whether the property exists. */ virtual bool existsProperty( std::string name ); /** * Function searches the property. If it does not exists, it throws an exception. * * \param name the name of the property * * \return a WProperty object */ virtual boost::shared_ptr< WPropertyBase > getProperty( std::string name ); /** * Returns a read ticket for read-access to the list of properties. * * \return the read ticket. */ virtual PropertySharedContainerType::ReadTicket getProperties() const; /** * Returns an read ticket for the properties. This, and only this, has to be used for external iteration of properties. * * \see WSharedObjectTicketRead * \return the read ticket. */ virtual PropertySharedContainerType::ReadTicket getReadTicket() const; /** * Searches the property with a given name. It does not throw any exception. It simply returns NULL if it can't be found. * * \param name the name of the property to search * * \return the property or NULL if not found. */ virtual boost::shared_ptr< WPropertyBase > findProperty( std::string name ) const; protected: /** * Helping function to find a property inside a specific group. It does not recursively find properties nested inside other property groups. * * \param props the group to search in. This is not a shared pointer since it is not needed. It simply can't happen that it is freed during * findProperty as it is contained in this or a nested properties instance. * \param name the name of the property inside THIS group. * * \return the property if found, else NULL. */ virtual boost::shared_ptr< WPropertyBase > findProperty( const WPropertyGroupBase* const props, std::string name ) const; /** * The set of proerties. This uses the operators ==,<,> WProperty to determine equalness. */ PropertySharedContainerType m_properties; /** * Condition notified whenever a property inside this group fires its WPropertyBase::m_updateCondition. This is especially useful to get a * notification if something updates without further knowledge what changed. Useful if you want to listen for updates in modules for example. * * \see getChildUpdateCondition */ boost::shared_ptr< WConditionSet > m_childUpdateCondition;  196 197 198 199 200  /** * Callback of m_childUpdateCondition. Overwrite this method to extend the default notification with some custom code. */ virtual void onChildUpdate();  Sebastian Eichelbaum committed Dec 01, 2011 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218  /** * Compares the names of two properties and returns true if they are equal. * * \param prop1 the first prop. * \param prop2 the second prop. * * \return Are the names of the two properties equal? */ bool propNamePredicate( boost::shared_ptr< WPropertyBase > prop1, boost::shared_ptr< WPropertyBase > prop2 ) const; /** * Insert the specified property into the list. This method is protected. It is a convenience method for deriving classes to add properties * without the need to update several conditions and similar. * * \param prop the property to add */ void addArbitraryProperty( WPropertyBase::SPtr prop );  Sebastian Eichelbaum committed Dec 02, 2011 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255  /** * Comfortable template to create a property instance and add it to the group. This is a utility for deriving classes which need to handle * certain property types and other types during compile time. * * At the first glance, this might not look very useful. But this * is practical to change the add-behaviour for certain property types by specializing this class. For example, the template \ref * WPropertyStruct uses this to modify the behaviour for the non-property type \ref WPropertyStructHelper::NOTYPE, which is used as * template list default (to emulate variadic template parameters lists). * * \tparam PropertyType the property type to create. It is assumed that this is a shared_ptr< WPropertyXYZ >. */ template< typename PropertyType > struct PropertyCreatorAndGroupAdder { /** * The type of the initial value. */ typedef typename PropertyType::element_type::ValueType ValueType; /** * Actually does the work and adds a new property with the given name, description and other parameters to the specified group. * * \param group the group to add the new property to * \param name the name of the new property * \param description the description of the new property * \param initial initial value */ static void createAndAdd( WPropertyGroupBase* group, std::string name, std::string description, const ValueType& initial = ValueType() ) { group->addArbitraryProperty( PropertyType( new typename PropertyType::element_type( name, description, initial ) ) ); } };  Sebastian Eichelbaum committed Dec 01, 2011 256 257 258 259 260 private: }; #endif // WPROPERTYGROUPBASE_H