When wxPGProperty is un-attached from wxPropertyGrid, keep its 'default' cell referen...

[wxWidgets.git] / include / wx / propgrid / property.h

diff --git a/include/wx/propgrid/property.h b/include/wx/propgrid/property.h
index e733e5a98774b7e2404009242426d228037f3345..f72e352e8f6b036c5a095bc5db14bdafab831dd1 100644 (file)
--- a/include/wx/propgrid/property.h
+++ b/include/wx/propgrid/property.h
@@ -6,12 +6,14 @@
 // Created:     2008-08-23
 // RCS-ID:      $Id$
 // Copyright:   (c) Jaakko Salli
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_PROPGRID_PROPERTY_H_
 #define _WX_PROPGRID_PROPERTY_H_
 
+#include "wx/defs.h"
+
 #if wxUSE_PROPGRID
 
 #include "wx/propgrid/propgriddefs.h"
@@ -304,6 +306,13 @@ public:
         return *this;
     }
 
+    // Used mostly internally to figure out if this cell is supposed
+    // to have default values when attached to a grid.
+    bool IsInvalid() const
+    {
+        return ( m_refData == NULL );
+    }
+
 private:
     virtual wxObjectRefData *CreateRefData() const
         { return new wxPGCellData(); }
@@ -473,6 +482,8 @@ wxPG_PROP_USES_COMMON_VALUE         = 0x00020000,
 
     @remarks
     This flag cannot be used with property iterators.
+
+    @see wxPGProperty::SetAutoUnspecified()
 */
 wxPG_PROP_AUTO_UNSPECIFIED          = 0x00040000,
 
@@ -1523,6 +1534,17 @@ public:
     */
     void DeleteChoice( int index );
 
+    /**
+        Enables or disables the property. Disabled property usually appears
+        as having grey text.
+
+        @param enable
+            If @false, property is disabled instead.
+
+        @see wxPropertyGridInterface::EnableProperty()
+    */
+    void Enable( bool enable = true );
+
     /**
         Call to enable or disable usage of common value (integer value that can
         be selected for properties instead of their normal values) for this
@@ -1897,6 +1919,21 @@ public:
 
     void SetAttributes( const wxPGAttributeStorage& attributes );
 
+    /**
+        Set if user can change the property's value to unspecified by
+        modifying the value of the editor control (usually by clearing
+        it).  Currently, this can work with following properties:
+        wxIntProperty, wxUIntProperty, wxFloatProperty, wxEditEnumProperty.
+
+        @param enable
+            Whether to enable or disable this behavior (it is disabled by
+            default).
+    */
+    void SetAutoUnspecified( bool enable = true )
+    {
+        ChangeFlag(wxPG_PROP_AUTO_UNSPECIFIED, enable);
+    }
+
     /**
         Sets property's background colour.
 
@@ -2028,23 +2065,14 @@ public:
     }
 
     /**
-        Sets given property flag.
+        Sets or clears given property flag. Mainly for internal use.
 
-        @see propgrid_propflags
-    */
-    void SetFlag( wxPGPropertyFlags flag )
-    {
-        //
-        // NB: While using wxPGPropertyFlags here makes it difficult to
-        //     combine different flags, it usefully prevents user from
-        //     using incorrect flags (say, wxWindow styles).
-        m_flags |= flag;
-    }
+        @remarks Setting a property flag never has any side-effect, and is
+                 intended almost exclusively for internal use. So, for
+                 example, if you want to disable a property, call
+                 Enable(false) instead of setting wxPG_PROP_DISABLED flag.
 
-    /**
-        Sets or clears given property flag.
-
-        @see propgrid_propflags
+        @see HasFlag(), GetFlags()
     */
     void ChangeFlag( wxPGPropertyFlags flag, bool set )
     {
@@ -2055,9 +2083,10 @@ public:
     }
 
     /**
-        Sets or clears given property flag, recursively.
+        Sets or clears given property flag, recursively. This function is
+        primarily intended for internal use.
 
-        @see propgrid_propflags
+        @see ChangeFlag()
     */
     void SetFlagRecursively( wxPGPropertyFlags flag, bool set );
 
@@ -2170,8 +2199,6 @@ public:
         return m_helpString;
     }
 
-    void ClearFlag( FlagType flag ) { m_flags &= ~(flag); }
-
     // Use, for example, to detect if item is inside collapsed section.
     bool IsSomeParent( wxPGProperty* candidate_parent ) const;
 
@@ -2357,11 +2384,29 @@ protected:
     // Removes child property with given pointer. Does not delete it.
     void RemoveChild( wxPGProperty* p );
 
+    void DoEnable( bool enable );
+
     void DoPreAddChild( int index, wxPGProperty* prop );
 
     void SetParentState( wxPropertyGridPageState* pstate )
         { m_parentState = pstate; }
 
+    void SetFlag( wxPGPropertyFlags flag )
+    {
+        //
+        // NB: While using wxPGPropertyFlags here makes it difficult to
+        //     combine different flags, it usefully prevents user from
+        //     using incorrect flags (say, wxWindow styles).
+        m_flags |= flag;
+    }
+
+    void ClearFlag( FlagType flag ) { m_flags &= ~(flag); }
+
+    // Called when the property is being removed from the grid and/or
+    // page state (but *not* when it is also deleted).
+    void OnDetached(wxPropertyGridPageState* state,
+                    wxPropertyGrid* propgrid);
+
     // Call after fixed sub-properties added/removed after creation.
     // if oldSelInd >= 0 and < new max items, then selection is
     // moved to it.