/** * @file llcontrol.h * @brief A mechanism for storing "control state" for a program * * $LicenseInfo:firstyear=2001&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library 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; * version 2.1 of the License only. * * This library 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 this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #ifndef LL_LLCONTROL_H #define LL_LLCONTROL_H #include "llboost.h" #include "llevent.h" #include "llnametable.h" #include "llmap.h" #include "llstring.h" #include "llrect.h" #include "llrefcount.h" #include "llinstancetracker.h" #include "llcontrolgroupreader.h" #include <vector> // *NOTE: boost::visit_each<> generates warning 4675 on .net 2003 // Disable the warning for the boost includes. #if LL_WINDOWS # if (_MSC_VER >= 1300 && _MSC_VER < 1400) # pragma warning(push) # pragma warning( disable : 4675 ) # endif #endif #include <boost/bind.hpp> #if LL_WINDOWS #pragma warning (push) #pragma warning (disable : 4263) // boost::signals2::expired_slot::what() has const mismatch #pragma warning (disable : 4264) #endif #include <boost/signals2.hpp> #if LL_WINDOWS #pragma warning (pop) #endif #if LL_WINDOWS # if (_MSC_VER >= 1300 && _MSC_VER < 1400) # pragma warning(pop) # endif #endif class LLVector3; class LLVector3d; class LLColor4; class LLColor3; const BOOL NO_PERSIST = FALSE; typedef enum e_control_type { TYPE_U32 = 0, TYPE_S32, TYPE_F32, TYPE_BOOLEAN, TYPE_STRING, TYPE_VEC3, TYPE_VEC3D, TYPE_RECT, TYPE_COL4, TYPE_COL3, TYPE_LLSD, TYPE_COUNT } eControlType; class LLControlVariable : public LLRefCount { friend class LLControlGroup; public: typedef boost::signals2::signal<bool(LLControlVariable* control, const LLSD&), boost_boolean_combiner> validate_signal_t; typedef boost::signals2::signal<void(LLControlVariable* control, const LLSD&)> commit_signal_t; private: std::string mName; std::string mComment; eControlType mType; bool mPersist; bool mHideFromSettingsEditor; std::vector<LLSD> mValues; commit_signal_t mCommitSignal; validate_signal_t mValidateSignal; public: LLControlVariable(const std::string& name, eControlType type, LLSD initial, const std::string& comment, bool persist = true, bool hidefromsettingseditor = false); virtual ~LLControlVariable(); const std::string& getName() const { return mName; } const std::string& getComment() const { return mComment; } eControlType type() { return mType; } bool isType(eControlType tp) { return tp == mType; } void resetToDefault(bool fire_signal = false); commit_signal_t* getSignal() { return &mCommitSignal; } // shorthand for commit signal commit_signal_t* getCommitSignal() { return &mCommitSignal; } validate_signal_t* getValidateSignal() { return &mValidateSignal; } bool isDefault() { return (mValues.size() == 1); } bool isSaveValueDefault(); bool isPersisted() { return mPersist; } bool isHiddenFromSettingsEditor() { return mHideFromSettingsEditor; } LLSD get() const { return getValue(); } LLSD getValue() const { return mValues.back(); } LLSD getDefault() const { return mValues.front(); } LLSD getSaveValue() const; void set(const LLSD& val) { setValue(val); } void setValue(const LLSD& value, bool saved_value = TRUE); void setDefaultValue(const LLSD& value); void setPersist(bool state); void setHiddenFromSettingsEditor(bool hide); void setComment(const std::string& comment); void firePropertyChanged() { mCommitSignal(this, mValues.back()); } private: LLSD getComparableValue(const LLSD& value); bool llsd_compare(const LLSD& a, const LLSD & b); }; typedef LLPointer<LLControlVariable> LLControlVariablePtr; //! Helper functions for converting between static types and LLControl values template <class T> eControlType get_control_type() { llwarns << "Usupported control type: " << typeid(T).name() << "." << llendl; return TYPE_COUNT; } template <class T> LLSD convert_to_llsd(const T& in) { // default implementation return LLSD(in); } template <class T> T convert_from_llsd(const LLSD& sd, eControlType type, const std::string& control_name) { // needs specialization return T(sd); } //const U32 STRING_CACHE_SIZE = 10000; class LLControlGroup : public LLInstanceTracker<LLControlGroup, std::string> { protected: typedef std::map<std::string, LLControlVariablePtr > ctrl_name_table_t; ctrl_name_table_t mNameTable; std::string mTypeString[TYPE_COUNT]; eControlType typeStringToEnum(const std::string& typestr); std::string typeEnumToString(eControlType typeenum); public: LLControlGroup(const std::string& name); ~LLControlGroup(); void cleanup(); typedef LLInstanceTracker<LLControlGroup, std::string>::instance_iter instance_iter; LLControlVariablePtr getControl(const std::string& name); struct ApplyFunctor { virtual ~ApplyFunctor() {}; virtual void apply(const std::string& name, LLControlVariable* control) = 0; }; void applyToAll(ApplyFunctor* func); BOOL declareControl(const std::string& name, eControlType type, const LLSD initial_val, const std::string& comment, BOOL persist, BOOL hidefromsettingseditor = FALSE); BOOL declareU32(const std::string& name, U32 initial_val, const std::string& comment, BOOL persist = TRUE); BOOL declareS32(const std::string& name, S32 initial_val, const std::string& comment, BOOL persist = TRUE); BOOL declareF32(const std::string& name, F32 initial_val, const std::string& comment, BOOL persist = TRUE); BOOL declareBOOL(const std::string& name, BOOL initial_val, const std::string& comment, BOOL persist = TRUE); BOOL declareString(const std::string& name, const std::string &initial_val, const std::string& comment, BOOL persist = TRUE); BOOL declareVec3(const std::string& name, const LLVector3 &initial_val,const std::string& comment, BOOL persist = TRUE); BOOL declareVec3d(const std::string& name, const LLVector3d &initial_val, const std::string& comment, BOOL persist = TRUE); BOOL declareRect(const std::string& name, const LLRect &initial_val, const std::string& comment, BOOL persist = TRUE); BOOL declareColor4(const std::string& name, const LLColor4 &initial_val, const std::string& comment, BOOL persist = TRUE); BOOL declareColor3(const std::string& name, const LLColor3 &initial_val, const std::string& comment, BOOL persist = TRUE); BOOL declareLLSD(const std::string& name, const LLSD &initial_val, const std::string& comment, BOOL persist = TRUE); std::string getString(const std::string& name); std::string getText(const std::string& name); BOOL getBOOL(const std::string& name); S32 getS32(const std::string& name); F32 getF32(const std::string& name); U32 getU32(const std::string& name); LLWString getWString(const std::string& name); LLVector3 getVector3(const std::string& name); LLVector3d getVector3d(const std::string& name); LLRect getRect(const std::string& name); LLSD getLLSD(const std::string& name); LLColor4 getColor(const std::string& name); LLColor4 getColor4(const std::string& name); LLColor3 getColor3(const std::string& name); // generic getter template<typename T> T get(const std::string& name) { LLControlVariable* control = getControl(name); LLSD value; eControlType type = TYPE_COUNT; if (control) { value = control->get(); type = control->type(); } else { llwarns << "Control " << name << " not found." << llendl; } return convert_from_llsd<T>(value, type, name); } void setBOOL(const std::string& name, BOOL val); void setS32(const std::string& name, S32 val); void setF32(const std::string& name, F32 val); void setU32(const std::string& name, U32 val); void setString(const std::string& name, const std::string& val); void setVector3(const std::string& name, const LLVector3 &val); void setVector3d(const std::string& name, const LLVector3d &val); void setRect(const std::string& name, const LLRect &val); void setColor4(const std::string& name, const LLColor4 &val); void setLLSD(const std::string& name, const LLSD& val); // type agnostic setter that takes LLSD void setUntypedValue(const std::string& name, const LLSD& val); // generic setter template<typename T> void set(const std::string& name, const T& val) { LLControlVariable* control = getControl(name); if (control && control->isType(get_control_type<T>())) { control->set(convert_to_llsd(val)); } else { llwarns << "Invalid control " << name << llendl; } } BOOL controlExists(const std::string& name); // Returns number of controls loaded, 0 if failed // If require_declaration is false, will auto-declare controls it finds // as the given type. U32 loadFromFileLegacy(const std::string& filename, BOOL require_declaration = TRUE, eControlType declare_as = TYPE_STRING); U32 saveToFile(const std::string& filename, BOOL nondefault_only); U32 loadFromFile(const std::string& filename, bool default_values = false); void resetToDefaults(); }; //! Publish/Subscribe object to interact with LLControlGroups. //! Use an LLCachedControl instance to connect to a LLControlVariable //! without have to manually create and bind a listener to a local //! object. template <class T> class LLControlCache : public LLRefCount, public LLInstanceTracker<LLControlCache<T>, std::string> { public: // This constructor will declare a control if it doesn't exist in the contol group LLControlCache(LLControlGroup& group, const std::string& name, const T& default_value, const std::string& comment) : LLInstanceTracker<LLControlCache<T>, std::string >(name) { if(!group.controlExists(name)) { if(!declareTypedControl(group, name, default_value, comment)) { llerrs << "The control could not be created!!!" << llendl; } } bindToControl(group, name); } LLControlCache(LLControlGroup& group, const std::string& name) : LLInstanceTracker<LLControlCache<T>, std::string >(name) { if(!group.controlExists(name)) { llerrs << "Control named " << name << "not found." << llendl; } bindToControl(group, name); } ~LLControlCache() { } const T& getValue() const { return mCachedValue; } private: void bindToControl(LLControlGroup& group, const std::string& name) { LLControlVariablePtr controlp = group.getControl(name); mType = controlp->type(); mCachedValue = convert_from_llsd<T>(controlp->get(), mType, name); // Add a listener to the controls signal... mConnection = controlp->getSignal()->connect( boost::bind(&LLControlCache<T>::handleValueChange, this, _2) ); mType = controlp->type(); } bool declareTypedControl(LLControlGroup& group, const std::string& name, const T& default_value, const std::string& comment) { LLSD init_value; eControlType type = get_control_type<T>(); init_value = convert_to_llsd(default_value); if(type < TYPE_COUNT) { group.declareControl(name, type, init_value, comment, FALSE); return true; } return false; } bool handleValueChange(const LLSD& newvalue) { mCachedValue = convert_from_llsd<T>(newvalue, mType, ""); return true; } private: T mCachedValue; eControlType mType; boost::signals2::scoped_connection mConnection; }; template <typename T> class LLCachedControl { public: LLCachedControl(LLControlGroup& group, const std::string& name, const T& default_value, const std::string& comment = "Declared In Code") { mCachedControlPtr = LLControlCache<T>::getInstance(name); if (mCachedControlPtr.isNull()) { mCachedControlPtr = new LLControlCache<T>(group, name, default_value, comment); } } LLCachedControl(LLControlGroup& group, const std::string& name) { mCachedControlPtr = LLControlCache<T>::getInstance(name); if (mCachedControlPtr.isNull()) { mCachedControlPtr = new LLControlCache<T>(group, name); } } operator const T&() const { return mCachedControlPtr->getValue(); } operator boost::function<const T&()> () const { return boost::function<const T&()>(*this); } const T& operator()() { return mCachedControlPtr->getValue(); } private: LLPointer<LLControlCache<T> > mCachedControlPtr; }; template <> eControlType get_control_type<U32>(); template <> eControlType get_control_type<S32>(); template <> eControlType get_control_type<F32>(); template <> eControlType get_control_type<bool>(); // Yay BOOL, its really an S32. //template <> eControlType get_control_type<BOOL> () template <> eControlType get_control_type<std::string>(); template <> eControlType get_control_type<LLVector3>(); template <> eControlType get_control_type<LLVector3d>(); template <> eControlType get_control_type<LLRect>(); template <> eControlType get_control_type<LLColor4>(); template <> eControlType get_control_type<LLColor3>(); template <> eControlType get_control_type<LLSD>(); template <> LLSD convert_to_llsd<U32>(const U32& in); template <> LLSD convert_to_llsd<LLVector3>(const LLVector3& in); template <> LLSD convert_to_llsd<LLVector3d>(const LLVector3d& in); template <> LLSD convert_to_llsd<LLRect>(const LLRect& in); template <> LLSD convert_to_llsd<LLColor4>(const LLColor4& in); template <> LLSD convert_to_llsd<LLColor3>(const LLColor3& in); template<> std::string convert_from_llsd<std::string>(const LLSD& sd, eControlType type, const std::string& control_name); template<> LLWString convert_from_llsd<LLWString>(const LLSD& sd, eControlType type, const std::string& control_name); template<> LLVector3 convert_from_llsd<LLVector3>(const LLSD& sd, eControlType type, const std::string& control_name); template<> LLVector3d convert_from_llsd<LLVector3d>(const LLSD& sd, eControlType type, const std::string& control_name); template<> LLRect convert_from_llsd<LLRect>(const LLSD& sd, eControlType type, const std::string& control_name); template<> bool convert_from_llsd<bool>(const LLSD& sd, eControlType type, const std::string& control_name); template<> S32 convert_from_llsd<S32>(const LLSD& sd, eControlType type, const std::string& control_name); template<> F32 convert_from_llsd<F32>(const LLSD& sd, eControlType type, const std::string& control_name); template<> U32 convert_from_llsd<U32>(const LLSD& sd, eControlType type, const std::string& control_name); template<> LLColor3 convert_from_llsd<LLColor3>(const LLSD& sd, eControlType type, const std::string& control_name); template<> LLColor4 convert_from_llsd<LLColor4>(const LLSD& sd, eControlType type, const std::string& control_name); template<> LLSD convert_from_llsd<LLSD>(const LLSD& sd, eControlType type, const std::string& control_name); //#define TEST_CACHED_CONTROL 1 #ifdef TEST_CACHED_CONTROL void test_cached_control(); #endif // TEST_CACHED_CONTROL #endif