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[wxWidgets.git] / interface / wx / persist.h

diff --git a/interface/wx/persist.h b/interface/wx/persist.h
index beae4c785f407cd64b1f39614d36e4c00315f28d..97e3fb60cb19652849315f37b495ba73b060962e 100644 (file)
--- a/interface/wx/persist.h
+++ b/interface/wx/persist.h
@@ -4,7 +4,7 @@
 // Author:      Vadim Zeitlin
 // RCS-ID:      $Id$
 // Copyright:   (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org>
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 /**
@@ -17,13 +17,33 @@
     This is a singleton class and its unique instance can be retrieved using
     Get() method.
 
+    @since 2.9.0
+
     @library{wxcore}
  */
 class wxPersistenceManager
 {
 public:
+    /**
+        Set the global persistence manager to use.
+
+        Call this method to specify a non-default persistence manager to use.
+        It should usually be called very early (e.g. in wxApp-derived class
+        constructor or in the beginning of overridden wxApp::OnInit()) 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.
+
+        @since 2.9.3
+     */
+    static void Set(wxPersistenceManager& manager);
+
     /**
         Returns the unique persistence manager object.
+
+        If Set() hadn't been called before, a default persistence manager
+        implementation is returned.
      */
     static wxPersistenceManager& Get();
 
@@ -62,10 +82,7 @@ public:
             defined for the objects of this class.
      */
     template <class T>
-    wxPersistentObject *Register(T *obj)
-    {
-        return Register(obj, wxCreatePersistentObject(obj));
-    }
+    wxPersistentObject *Register(T *obj);
 
     /**
         Register an object with the manager.
@@ -117,7 +134,7 @@ public:
         @see SaveAndUnregister()
      */
     void Save(void *obj);
-    
+
     /**
         Restore the object properties previously saved by Save().
 
@@ -143,6 +160,46 @@ public:
 
     bool RegisterAndRestore(void *obj, wxPersistentObject *po);
     //@}
+
+protected:
+    /**
+        Protected default constructor.
+
+        This constructor is only provided for the derived classes, to use an
+        object of this class static Get() method should be called.
+     */
+    wxPersistenceManager();
+
+    /**
+        Return the config object to use.
+
+        By default the global wxConfig, returned by wxConfigBase::Get(), is
+        used but a derived class could override this function to return a
+        different one if necessary.
+
+        @since 2.9.3
+     */
+    virtual wxConfigBase *GetConfig() const;
+
+    /**
+        Return the path to use for saving the setting with the given name for
+        the specified object.
+
+        Notice that the @a name argument is the name of the setting, not the
+        name of the object itself which can be retrieved with its GetName()
+        method.
+
+        This method can be overridden by a derived class to change where in
+        wxConfig the different options are stored. By default, all settings of
+        the persistent controls are stored under "Persistent_Options" group and
+        grouped by control type (e.g. "Window" for top level windows or
+        "Splitter") and name, so that the position of a splitter called "sep"
+        could be stored under "Persistent_Options/Splitter/sep/Position" key.
+
+        @since 2.9.3
+     */
+    virtual wxString GetKey(const wxPersistentObject& who,
+                            const wxString& name) const;
 };
 
 /**
@@ -233,10 +290,7 @@ protected:
             @true if the value was saved or @false if an error occurred.
      */
     template <typename T>
-    bool SaveValue(const wxString& name, T value) const
-    {
-        return wxPersistenceManager::Get().SaveValue(*this, name, value);
-    }
+    bool SaveValue(const wxString& name, T value) const;
 
     /**
         Restore the value saved by Save().
@@ -251,10 +305,7 @@ protected:
             found or an error occurred.
      */
     template <typename T>
-    bool RestoreValue(const wxString& name, T *value)
-    {
-        return wxPersistenceManager::Get().RestoreValue(*this, name, value);
-    }
+    bool RestoreValue(const wxString& name, T *value);
 };
 
 /**
@@ -268,6 +319,34 @@ protected:
     framework.
 
     @see @ref persistence_defining
+
+    @header{wx/persist.h}
  */
 template <class T>
 wxPersistentObject *wxCreatePersistentObject(T *obj);
+
+/**
+    A shorter synonym for wxPersistenceManager::RegisterAndRestore().
+
+    This function simply calls wxPersistenceManager::RegisterAndRestore() but
+    using it results in slightly shorter code as it calls
+    wxPersistenceManager::Get() internally. As an additional convenience, this
+    function can also set the window name.
+
+    For the implementation reasons, this function @em must be used instead of
+    the template method when using Microsoft Visual C++ 6 compiler.
+
+    @param obj wxWindow-derived object to register with persistence manager and
+        to try to restore the settings for.
+    @param name If not empty, @a obj name is changed to the provided value
+        before registering it.
+    @return true if the settings were restored or false otherwise (this will
+        always be the case when the program runs for the first time, for
+        example).
+
+    @since 2.9.0, @a name is new in 2.9.1.
+
+    @header{wx/persist.h}
+ */
+template <class T>
+bool wxPersistentRegisterAndRestore(T *obj, const wxString& name = wxString());