-///////////////////////////////////////////////////////////////////////////////\r
-// Name: wx/persist.h\r
-// Purpose: common classes for persistence support\r
-// Author: Vadim Zeitlin\r
-// Created: 2009-01-18\r
-// RCS-ID: $Id: wxhead.h,v 1.10 2008-04-15 23:34:19 zeitlin Exp $\r
-// Copyright: (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org>\r
-// Licence: wxWindows licence\r
-///////////////////////////////////////////////////////////////////////////////\r
-\r
-#ifndef _WX_PERSIST_H_\r
-#define _WX_PERSIST_H_\r
-\r
-#include "wx/string.h"\r
-#include "wx/hashmap.h"\r
-#include "wx/confbase.h"\r
-\r
-class wxPersistentObject;\r
-\r
-WX_DECLARE_VOIDPTR_HASH_MAP(wxPersistentObject *, wxPersistentObjectsMap);\r
-\r
-// ----------------------------------------------------------------------------\r
-// global functions\r
-// ----------------------------------------------------------------------------\r
-\r
-/*\r
- We do _not_ declare this function as doing this would force us to specialize\r
- it for the user classes deriving from the standard persistent classes.\r
- However we do define overloads of wxCreatePersistentObject() for all the wx\r
- classes which means that template wxPersistentObject::Restore() picks up the\r
- right overload to use provided that the header defining the correct overload\r
- is included before calling it. And a compilation error happens if this is\r
- not done.\r
-\r
-template <class T>\r
-wxPersistentObject *wxCreatePersistentObject(T *obj);\r
-\r
- */\r
-\r
-// ----------------------------------------------------------------------------\r
-// wxPersistenceManager: global aspects of persistent windows\r
-// ----------------------------------------------------------------------------\r
-\r
-class WXDLLIMPEXP_CORE wxPersistenceManager\r
-{\r
-public:\r
- // accessor to the unique persistence manager object\r
- static wxPersistenceManager& Get();\r
-\r
-\r
- // globally disable restoring or saving the persistent properties (both are\r
- // enabled by default)\r
- bool DisableSaving() { m_doSave = false; }\r
- bool DisableRestoring() { m_doRestore = false; }\r
-\r
-\r
- // register an object with the manager: when using the first overload,\r
- // wxCreatePersistentObject() must be specialized for this object class;\r
- // with the second one the persistent adapter is created by the caller\r
- //\r
- // the object shouldn't be already registered with us\r
- template <class T>\r
- wxPersistentObject *Register(T *obj)\r
- {\r
- return Register(obj, wxCreatePersistentObject(obj));\r
- }\r
-\r
- wxPersistentObject *Register(void *obj, wxPersistentObject *po);\r
-\r
- // check if the object is registered and return the associated\r
- // wxPersistentObject if it is or NULL otherwise\r
- wxPersistentObject *Find(void *obj) const;\r
-\r
- // unregister the object, this is called by wxPersistentObject itself so\r
- // there is usually no need to do it explicitly\r
- //\r
- // deletes the associated wxPersistentObject\r
- void Unregister(void *obj);\r
-\r
- \r
- // save/restore the state of an object\r
- //\r
- // these methods do nothing if DisableSaving/Restoring() was called\r
- //\r
- // Restore() returns true if the object state was really restored\r
- void Save(void *obj);\r
- bool Restore(void *obj);\r
-\r
- // combines both Save() and Unregister() calls\r
- void SaveAndUnregister(void *obj)\r
- {\r
- Save(obj);\r
- Unregister(obj);\r
- }\r
-\r
- // combines both Register() and Restore() calls\r
- template <class T>\r
- bool RegisterAndRestore(T *obj)\r
- {\r
- return Register(obj) && Restore(obj);\r
- }\r
-\r
- bool RegisterAndRestore(void *obj, wxPersistentObject *po)\r
- {\r
- return Register(obj, po) && Restore(obj);\r
- }\r
-\r
-\r
- // methods used by the persistent objects to save and restore the data\r
- //\r
- // currently these methods simply use wxConfig::Get()\r
- //\r
- // TODO: make this customizable by allowing\r
- // (a) specifying custom wxConfig object to use\r
- // (b) allowing to use something else entirely\r
- template <typename T>\r
- bool\r
- SaveValue(const wxPersistentObject& who, const wxString& name, T value)\r
- {\r
- wxConfigBase * const conf = GetConfig();\r
- if ( !conf )\r
- return false;\r
-\r
- return conf->Write(GetKey(who, name), value);\r
- }\r
-\r
- template <typename T>\r
- bool\r
- RestoreValue(const wxPersistentObject& who, const wxString& name, T *value)\r
- {\r
- wxConfigBase * const conf = GetConfig();\r
- if ( !conf )\r
- return false;\r
-\r
- return conf->Read(GetKey(who, name), value);\r
- }\r
-\r
-private:\r
- // ctor is private, use Get()\r
- wxPersistenceManager()\r
- {\r
- m_doSave =\r
- m_doRestore = true;\r
- }\r
-\r
- // helpers of Save/Restore(), will be customized later\r
- wxConfigBase *GetConfig() const { return wxConfigBase::Get(); }\r
- wxString GetKey(const wxPersistentObject& who, const wxString& name) const;\r
-\r
-\r
- // map with the registered objects as keys and associated\r
- // wxPersistentObjects as values\r
- wxPersistentObjectsMap m_persistentObjects;\r
-\r
- // true if we should restore/save the settings (it doesn't make much sense\r
- // to use this class when both of them are false but setting one of them to\r
- // false may make sense in some situations)\r
- bool m_doSave,\r
- m_doRestore;\r
-\r
- DECLARE_NO_COPY_CLASS(wxPersistenceManager);\r
-};\r
-\r
-// ----------------------------------------------------------------------------\r
-// wxPersistentObject: ABC for anything persistent\r
-// ----------------------------------------------------------------------------\r
-\r
-class wxPersistentObject\r
-{\r
-public:\r
- // ctor associates us with the object whose options we save/restore\r
- wxPersistentObject(void *obj) : m_obj(obj) { }\r
-\r
- // trivial but virtual dtor\r
- virtual ~wxPersistentObject() { }\r
-\r
-\r
- // methods used by wxPersistenceManager\r
- // ------------------------------------\r
-\r
- // save/restore the corresponding objects settings\r
- //\r
- // these methods shouldn't be used directly as they don't respect the\r
- // global wxPersistenceManager::DisableSaving/Restoring() settings, use\r
- // wxPersistenceManager methods with the same name instead\r
- virtual void Save() const = 0;\r
- virtual bool Restore() = 0;\r
-\r
-\r
- // get the kind of the objects we correspond to, e.g. "Frame"\r
- virtual wxString GetKind() const = 0;\r
-\r
- // get the name of the object we correspond to, e.g. "Main"\r
- virtual wxString GetName() const = 0;\r
-\r
-\r
- // return the associated object\r
- void *GetObject() const { return m_obj; }\r
-\r
-protected:\r
- // wrappers for wxPersistenceManager methods which don't require passing\r
- // "this" as the first parameter all the time\r
- template <typename T>\r
- bool SaveValue(const wxString& name, T value) const\r
- {\r
- return wxPersistenceManager::Get().SaveValue(*this, name, value);\r
- }\r
-\r
- template <typename T>\r
- bool RestoreValue(const wxString& name, T *value)\r
- {\r
- return wxPersistenceManager::Get().RestoreValue(*this, name, value);\r
- }\r
-\r
-private:\r
- void * const m_obj;\r
-\r
- DECLARE_NO_COPY_CLASS(wxPersistentObject)\r
-};\r
-\r
-#endif // _WX_PERSIST_H_\r
-\r
+///////////////////////////////////////////////////////////////////////////////
+// Name: wx/persist.h
+// Purpose: common classes for persistence support
+// Author: Vadim Zeitlin
+// Created: 2009-01-18
+// RCS-ID: $Id$
+// Copyright: (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence: wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_PERSIST_H_
+#define _WX_PERSIST_H_
+
+#include "wx/string.h"
+#include "wx/hashmap.h"
+#include "wx/confbase.h"
+
+class wxPersistentObject;
+
+WX_DECLARE_VOIDPTR_HASH_MAP(wxPersistentObject *, wxPersistentObjectsMap);
+
+// ----------------------------------------------------------------------------
+// global functions
+// ----------------------------------------------------------------------------
+
+/*
+ We do _not_ declare this function as doing this would force us to specialize
+ it for the user classes deriving from the standard persistent classes.
+ However we do define overloads of wxCreatePersistentObject() for all the wx
+ classes which means that template wxPersistentObject::Restore() picks up the
+ right overload to use provided that the header defining the correct overload
+ is included before calling it. And a compilation error happens if this is
+ not done.
+
+template <class T>
+wxPersistentObject *wxCreatePersistentObject(T *obj);
+
+ */
+
+// ----------------------------------------------------------------------------
+// wxPersistenceManager: global aspects of persistent windows
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxPersistenceManager
+{
+public:
+ // Call this method to specify a non-default persistence manager to use.
+ // This function should usually be called very early to affect creation of
+ // all persistent controls and the object passed to it must have a lifetime
+ // long enough to be still alive when the persistent controls are destroyed
+ // and need it to save their state so typically this would be a global or a
+ // wxApp member.
+ static void Set(wxPersistenceManager& manager);
+
+ // accessor to the unique persistence manager object
+ static wxPersistenceManager& Get();
+
+ // trivial but virtual dtor
+ //
+ // FIXME-VC6: this only needs to be public because of VC6 bug
+ virtual ~wxPersistenceManager();
+
+
+ // globally disable restoring or saving the persistent properties (both are
+ // enabled by default)
+ void DisableSaving() { m_doSave = false; }
+ void DisableRestoring() { m_doRestore = false; }
+
+
+ // register an object with the manager: when using the first overload,
+ // wxCreatePersistentObject() must be specialized for this object class;
+ // with the second one the persistent adapter is created by the caller
+ //
+ // the object shouldn't be already registered with us
+ template <class T>
+ wxPersistentObject *Register(T *obj)
+ {
+ return Register(obj, wxCreatePersistentObject(obj));
+ }
+
+ wxPersistentObject *Register(void *obj, wxPersistentObject *po);
+
+ // check if the object is registered and return the associated
+ // wxPersistentObject if it is or NULL otherwise
+ wxPersistentObject *Find(void *obj) const;
+
+ // unregister the object, this is called by wxPersistentObject itself so
+ // there is usually no need to do it explicitly
+ //
+ // deletes the associated wxPersistentObject
+ void Unregister(void *obj);
+
+
+ // save/restore the state of an object
+ //
+ // these methods do nothing if DisableSaving/Restoring() was called
+ //
+ // Restore() returns true if the object state was really restored
+ void Save(void *obj);
+ bool Restore(void *obj);
+
+ // combines both Save() and Unregister() calls
+ void SaveAndUnregister(void *obj)
+ {
+ Save(obj);
+ Unregister(obj);
+ }
+
+ // combines both Register() and Restore() calls
+ template <class T>
+ bool RegisterAndRestore(T *obj)
+ {
+ return Register(obj) && Restore(obj);
+ }
+
+ bool RegisterAndRestore(void *obj, wxPersistentObject *po)
+ {
+ return Register(obj, po) && Restore(obj);
+ }
+
+
+ // methods used by the persistent objects to save and restore the data
+ //
+ // currently these methods simply use wxConfig::Get() but they may be
+ // overridden in the derived class (once we allow creating custom
+ // persistent managers)
+#define wxPERSIST_DECLARE_SAVE_RESTORE_FOR(Type) \
+ virtual bool SaveValue(const wxPersistentObject& who, \
+ const wxString& name, \
+ Type value); \
+ \
+ virtual bool \
+ RestoreValue(const wxPersistentObject& who, \
+ const wxString& name, \
+ Type *value)
+
+ wxPERSIST_DECLARE_SAVE_RESTORE_FOR(bool);
+ wxPERSIST_DECLARE_SAVE_RESTORE_FOR(int);
+ wxPERSIST_DECLARE_SAVE_RESTORE_FOR(long);
+ wxPERSIST_DECLARE_SAVE_RESTORE_FOR(wxString);
+
+#undef wxPERSIST_DECLARE_SAVE_RESTORE_FOR
+
+protected:
+ // ctor is private, use Get()
+ wxPersistenceManager()
+ {
+ m_doSave =
+ m_doRestore = true;
+ }
+
+
+ // Return the config object to use, by default just the global one but a
+ // different one could be used by the derived class if needed.
+ virtual wxConfigBase *GetConfig() const { return wxConfigBase::Get(); }
+
+ // Return the path to use for saving the setting with the given name for
+ // the specified object (notice that the name is the name of the setting,
+ // not the name of the object itself which can be retrieved with GetName()).
+ virtual wxString GetKey(const wxPersistentObject& who,
+ const wxString& name) const;
+
+
+private:
+ // map with the registered objects as keys and associated
+ // wxPersistentObjects as values
+ wxPersistentObjectsMap m_persistentObjects;
+
+ // true if we should restore/save the settings (it doesn't make much sense
+ // to use this class when both of them are false but setting one of them to
+ // false may make sense in some situations)
+ bool m_doSave,
+ m_doRestore;
+
+ wxDECLARE_NO_COPY_CLASS(wxPersistenceManager);
+};
+
+// ----------------------------------------------------------------------------
+// wxPersistentObject: ABC for anything persistent
+// ----------------------------------------------------------------------------
+
+class wxPersistentObject
+{
+public:
+ // ctor associates us with the object whose options we save/restore
+ wxPersistentObject(void *obj) : m_obj(obj) { }
+
+ // trivial but virtual dtor
+ virtual ~wxPersistentObject() { }
+
+
+ // methods used by wxPersistenceManager
+ // ------------------------------------
+
+ // save/restore the corresponding objects settings
+ //
+ // these methods shouldn't be used directly as they don't respect the
+ // global wxPersistenceManager::DisableSaving/Restoring() settings, use
+ // wxPersistenceManager methods with the same name instead
+ virtual void Save() const = 0;
+ virtual bool Restore() = 0;
+
+
+ // get the kind of the objects we correspond to, e.g. "Frame"
+ virtual wxString GetKind() const = 0;
+
+ // get the name of the object we correspond to, e.g. "Main"
+ virtual wxString GetName() const = 0;
+
+
+ // return the associated object
+ void *GetObject() const { return m_obj; }
+
+protected:
+ // wrappers for wxPersistenceManager methods which don't require passing
+ // "this" as the first parameter all the time
+ template <typename T>
+ bool SaveValue(const wxString& name, T value) const
+ {
+ return wxPersistenceManager::Get().SaveValue(*this, name, value);
+ }
+
+ template <typename T>
+ bool RestoreValue(const wxString& name, T *value)
+ {
+ return wxPersistenceManager::Get().RestoreValue(*this, name, value);
+ }
+
+private:
+ void * const m_obj;
+
+ wxDECLARE_NO_COPY_CLASS(wxPersistentObject);
+};
+
+// FIXME-VC6: VC6 has troubles with template methods of DLL-exported classes,
+// apparently it believes they should be defined in the DLL (which
+// is, of course, impossible as the DLL doesn't know for which types
+// will they be instantiated) instead of compiling them when
+// building the main application itself. Because of this problem
+// (which only arises in debug build!) we can't use the usual
+// RegisterAndRestore(obj) with it and need to explicitly create the
+// persistence adapter. To hide this ugliness we define a global
+// function which does it for us.
+template <typename T>
+inline bool wxPersistentRegisterAndRestore(T *obj)
+{
+ wxPersistentObject * const pers = wxCreatePersistentObject(obj);
+
+ return wxPersistenceManager::Get().RegisterAndRestore(obj, pers);
+
+}
+
+// A helper function which also sets the name for the (wxWindow-derived) object
+// before registering and restoring it.
+template <typename T>
+inline bool wxPersistentRegisterAndRestore(T *obj, const wxString& name)
+{
+ obj->SetName(name);
+
+ return wxPersistentRegisterAndRestore(obj);
+}
+
+#endif // _WX_PERSIST_H_
+
projects / wxWidgets.git / blobdiff