test whether pointer is non-NULL before using it, not after, in wxAnimation::Load...

[wxWidgets.git] / include / wx / clntdata.h

diff --git a/include/wx/clntdata.h b/include/wx/clntdata.h
index 1b0f1792aac61d2f8af1d2f0d7142b41cd51c12b..33fae4c1045b668ea092b765675f92a59410c819 100644 (file)
--- a/include/wx/clntdata.h
+++ b/include/wx/clntdata.h
@@ -5,19 +5,85 @@
 // Modified by:
 // Created:     9-Oct-2001
 // RCS-ID:      $Id$
 // Modified by:
 // Created:     9-Oct-2001
 // RCS-ID:      $Id$

-// Copyright:   (c) wxWindows team
+// Copyright:   (c) wxWidgets team

 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_CLNTDATAH__
 #define _WX_CLNTDATAH__
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_CLNTDATAH__
 #define _WX_CLNTDATAH__
 

-#ifdef __GNUG__
-    #pragma interface "clntdata.h"
-#endif
-

 #include "wx/defs.h"
 #include "wx/string.h"
 #include "wx/defs.h"
 #include "wx/string.h"

+#include "wx/hashmap.h"
+
+typedef int (*wxShadowObjectMethod)(void*, void*);
+WX_DECLARE_STRING_HASH_MAP_WITH_DECL(
+    wxShadowObjectMethod,
+    wxShadowObjectMethods,
+    class WXDLLIMPEXP_BASE
+);
+WX_DECLARE_STRING_HASH_MAP_WITH_DECL(
+    void *,
+    wxShadowObjectFields,
+    class WXDLLIMPEXP_BASE
+);
+
+class WXDLLIMPEXP_BASE wxShadowObject
+{
+public:
+    wxShadowObject() { }
+
+    void AddMethod( const wxString &name, wxShadowObjectMethod method )
+    {
+        wxShadowObjectMethods::iterator it = m_methods.find( name );
+        if (it == m_methods.end())
+            m_methods[ name ] = method;
+        else
+            it->second = method;
+    }
+
+    bool InvokeMethod( const wxString &name, void* window, void* param, int* returnValue )
+    {
+        wxShadowObjectMethods::iterator it = m_methods.find( name );
+        if (it == m_methods.end())
+            return false;
+        wxShadowObjectMethod method = it->second;
+        int ret = (*method)(window, param);
+        if (returnValue)
+            *returnValue = ret;
+        return true;
+    }
+
+    void AddField( const wxString &name, void* initialValue = NULL )
+    {
+        wxShadowObjectFields::iterator it = m_fields.find( name );
+        if (it == m_fields.end())
+            m_fields[ name ] = initialValue;
+        else
+            it->second = initialValue;
+    }
+
+    void SetField( const wxString &name, void* value )
+    {
+        wxShadowObjectFields::iterator it = m_fields.find( name );
+        if (it == m_fields.end())
+            return;
+        it->second = value;
+    }
+
+    void* GetField( const wxString &name, void *defaultValue = NULL )
+    {
+        wxShadowObjectFields::iterator it = m_fields.find( name );
+        if (it == m_fields.end())
+            return defaultValue;
+        return it->second;
+    }
+
+private:
+    wxShadowObjectMethods   m_methods;
+    wxShadowObjectFields    m_fields;
+};
+

 
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 


@@ -29,14 +95,14 @@ enum wxClientDataType
     wxClientData_Void     // client data is untyped and we don't own it
 };
 
     wxClientData_Void     // client data is untyped and we don't own it
 };
 

-class WXDLLEXPORT wxClientData
+class WXDLLIMPEXP_BASE wxClientData

 {
 public:
     wxClientData() { }
     virtual ~wxClientData() { }
 };
 
 {
 public:
     wxClientData() { }
     virtual ~wxClientData() { }
 };
 

-class WXDLLEXPORT wxStringClientData : public wxClientData
+class WXDLLIMPEXP_BASE wxStringClientData : public wxClientData

 {
 public:
     wxStringClientData() : m_data() { }
 {
 public:
     wxStringClientData() : m_data() { }


@@ -48,18 +114,16 @@ private:
     wxString  m_data;
 };
 
     wxString  m_data;
 };
 

-
-

 // This class is a mixin that provides storage and management of "client
 // data."  The client data stored can either be a pointer to a wxClientData
 // This class is a mixin that provides storage and management of "client
 // data."  The client data stored can either be a pointer to a wxClientData

-// object in which case it is managed by the container (i.e.  it will delete
+// object in which case it is managed by the container (i.e. it will delete

 // the data when it's destroyed) or an untyped pointer which won't be deleted
 // by the container - but not both of them
 //
 // NOTE:  This functionality is currently duplicated in wxEvtHandler in order
 // the data when it's destroyed) or an untyped pointer which won't be deleted
 // by the container - but not both of them
 //
 // NOTE:  This functionality is currently duplicated in wxEvtHandler in order

-//        to avoid having more than one vtable in that class heirachy.
+//        to avoid having more than one vtable in that class hierarchy.

 
 

-class WXDLLEXPORT wxClientDataContainer
+class WXDLLIMPEXP_BASE wxClientDataContainer

 {
 public:
     wxClientDataContainer();
 {
 public:
     wxClientDataContainer();


@@ -73,10 +137,10 @@ public:
 
 protected:
     // The user data: either an object which will be deleted by the container
 
 protected:
     // The user data: either an object which will be deleted by the container

-    // when it's deleted or some raw pointer which we do nothing with - only
-    // one type of data can be used with the given window (i.e. you cannot set
+    // when it's deleted or some raw pointer which we do nothing with. Only
+    // one type of data can be used with the given window, i.e. you cannot set

     // the void data and then associate the container with wxClientData or vice
     // the void data and then associate the container with wxClientData or vice

-    // versa)
+    // versa.

     union
     {
         wxClientData *m_clientObject;
     union
     {
         wxClientData *m_clientObject;


@@ -95,6 +159,115 @@ protected:
 
 };
 
 
 };
 

-// ----------------------------------------------------------------------------
-#endif
+#include "wx/vector.h"
+
+struct WXDLLIMPEXP_BASE wxClientDataDictionaryPair
+{
+    wxClientDataDictionaryPair( size_t idx ) : index( idx ), data( 0 ) { }
+
+    size_t index;
+    wxClientData* data;
+};
+
+_WX_DECLARE_VECTOR(
+    wxClientDataDictionaryPair,
+    wxClientDataDictionaryPairVector,
+    WXDLLIMPEXP_BASE
+);
+
+// this class is used internally to maintain the association between items
+// of (some subclasses of) wxControlWithItems and their client data
+// NOTE: this class does not keep track of whether it contains
+// wxClientData or void*. The client must ensure that
+// it does not contain a mix of the two, and that
+// DestroyData is called if it contains wxClientData
+class WXDLLIMPEXP_BASE wxClientDataDictionary
+{
+public:
+    wxClientDataDictionary() {}
+
+    // deletes all the data
+    void DestroyData()
+    {
+        for( size_t i = 0, end = m_vec.size(); i != end; ++i )
+            delete m_vec[i].data;
+        m_vec.clear();
+    }
+
+    // if data for the given index is not present, add it,
+    // if it is present, delete the old data and replace it with
+    // the new one
+    void Set( size_t index, wxClientData* data, bool doDelete )
+    {
+        size_t ptr = Find( index );
+
+        if( !data )
+        {
+            if( ptr == m_vec.size() ) return;
+            if( doDelete )
+                delete m_vec[ptr].data;
+            m_vec.erase( ptr );
+        }
+        else
+        {
+            if( ptr == m_vec.size() )
+            {
+                m_vec.push_back( wxClientDataDictionaryPair( index ) );
+                ptr = m_vec.size() - 1;
+            }
+
+            if( doDelete )
+                delete m_vec[ptr].data;
+            m_vec[ptr].data = data;
+        }
+    }
+
+    // get the data associated with the given index,
+    // return 0 if not found
+    wxClientData* Get( size_t index ) const
+    {
+        size_t it = Find( index );
+        if( it == m_vec.size() ) return 0;
+        return (wxClientData*)m_vec[it].data; // const cast
+    }
+
+    // delete the data associated with the given index
+    // it also decreases by one the indices of all the elements
+    // with an index greater than the given index
+    void Delete( size_t index, bool doDelete )
+    {
+        size_t todel = m_vec.size();
+
+        for( size_t i = 0, end = m_vec.size(); i != end; ++i )
+        {
+            if( m_vec[i].index == index )
+                todel = i;
+            else if( m_vec[i].index > index )
+                --(m_vec[i].index);
+        }
+
+        if( todel != m_vec.size() )
+        {
+            if( doDelete )
+                delete m_vec[todel].data;
+            m_vec.erase( todel );
+        }
+    }
+private:
+    // returns MyVec.size() if not found
+    size_t Find( size_t index ) const
+    {
+        for( size_t i = 0, end = m_vec.size(); i != end; ++i )
+        {
+            if( m_vec[i].index == index )
+                return i;
+        }
+
+        return m_vec.size();
+    }
+
+    wxClientDataDictionaryPairVector m_vec;
+};
+
+#endif // _WX_CLNTDATAH__