Don't convert args if NULL

[wxWidgets.git] / src / generic / prop.cpp

diff --git a/src/generic/prop.cpp b/src/generic/prop.cpp
index 25fc02ce07c54dfd00ca4eda913215232c1204e9..028427d935ec4ee18cfce48a87bf533d08e98225 100644 (file)
--- a/src/generic/prop.cpp
+++ b/src/generic/prop.cpp
@@ -6,7 +6,7 @@
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart
-// Licence:    wxWindows licence
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #ifdef __GNUG__
@@ -20,8 +20,9 @@
 #pragma hdrstop
 #endif
 
+#if wxUSE_PROPSHEET
+
 #ifndef WX_PRECOMP
-#include "wx/wx.h"
 #endif
 
 #include "wx/debug.h"
@@ -47,6 +48,7 @@ wxPropertyValue::wxPropertyValue(void)
 
 wxPropertyValue::wxPropertyValue(const wxPropertyValue& copyFrom)
 {
+  m_value.string = (wxChar*) NULL;
   m_modifiedFlag = FALSE;
   Copy((wxPropertyValue& )copyFrom);
 }
@@ -178,7 +180,7 @@ wxPropertyValue::wxPropertyValue(wxStringList *the_list)
   wxNode *node = the_list->First();
   while (node)
   {
-    char *s = (char *)node->Data();
+    wxChar *s = (wxChar *)node->Data();
     Append(new wxPropertyValue(s));
     node = node->Next();
   }
@@ -336,6 +338,11 @@ wxPropertyValue *wxPropertyValue::NewCopy(void) const
 
 void wxPropertyValue::Copy(wxPropertyValue& copyFrom)
 {
+  if (m_type == wxPropertyValueString)
+  {
+    delete[] m_value.string ;
+    m_value.string = NULL;
+  }
   m_type = copyFrom.Type();
 
   switch (m_type)
@@ -558,7 +565,7 @@ void wxPropertyValue::WritePropertyType(wxString& stream)    // Write as any oth
           expr->WritePropertyType(stream);
           expr = expr->m_next;
           if (expr)
-           stream.Append( wxT(", ") );
+        stream.Append( wxT(", ") );
         }
         stream.Append( wxT("]") );
       }
@@ -587,6 +594,14 @@ void wxPropertyValue::operator=(const wxString& val1)
   const wxChar *val = (const wxChar *)val1;
 
   m_modifiedFlag = TRUE;
+
+  wxPropertyValueType oldType = m_type;
+  if (oldType == wxPropertyValueString)
+  {
+    delete[] m_value.string ;
+    m_value.string = NULL;
+  }
+
   if (m_type == wxPropertyValueNull)
     m_type = wxPropertyValueString;
 
@@ -599,8 +614,7 @@ void wxPropertyValue::operator=(const wxString& val1)
   }
   else if (m_type == wxPropertyValueStringPtr)
   {
-    if (*m_value.stringPtr)
-      delete[] *m_value.stringPtr;
+    wxFAIL_MSG( wxT("Shouldn't try to assign a wxString reference to a char* pointer.") );
     if (val)
       *m_value.stringPtr = copystring(val);
     else
@@ -615,6 +629,13 @@ void wxPropertyValue::operator=(const wxString& val1)
 
 void wxPropertyValue::operator=(const long val)
 {
+  wxPropertyValueType oldType = m_type;
+  if (oldType == wxPropertyValueString)
+  {
+    delete[] m_value.string ;
+    m_value.string = NULL;
+  }
+
   m_modifiedFlag = TRUE;
   if (m_type == wxPropertyValueNull)
     m_type = wxPropertyValueInteger;
@@ -634,6 +655,13 @@ void wxPropertyValue::operator=(const long val)
 
 void wxPropertyValue::operator=(const bool val)
 {
+  wxPropertyValueType oldType = m_type;
+  if (oldType == wxPropertyValueString)
+  {
+    delete[] m_value.string ;
+    m_value.string = NULL;
+  }
+
   m_modifiedFlag = TRUE;
   if (m_type == wxPropertyValueNull)
     m_type = wxPropertyValuebool;
@@ -649,6 +677,13 @@ void wxPropertyValue::operator=(const bool val)
 
 void wxPropertyValue::operator=(const float val)
 {
+  wxPropertyValueType oldType = m_type;
+  if (oldType == wxPropertyValueString)
+  {
+    delete[] m_value.string ;
+    m_value.string = NULL;
+  }
+
   m_modifiedFlag = TRUE;
   if (m_type == wxPropertyValueNull)
     m_type = wxPropertyValueReal;
@@ -668,6 +703,13 @@ void wxPropertyValue::operator=(const float val)
 
 void wxPropertyValue::operator=(const wxChar **val)
 {
+  wxPropertyValueType oldType = m_type;
+  if (oldType == wxPropertyValueString)
+  {
+    delete[] m_value.string ;
+    m_value.string = NULL;
+  }
+
   m_modifiedFlag = TRUE;
   m_type = wxPropertyValueStringPtr;
 
@@ -965,14 +1007,14 @@ void wxPropertySheet::RemoveProperty(const wxString& name)
   if(node)
   {
     wxProperty *prop = (wxProperty *)node->Data();
-       delete prop;
+     delete prop;
     m_properties.DeleteNode(node);
   }
-}      
+}    
 
 bool wxPropertySheet::HasProperty(const wxString& name) const
 {
-       return (GetProperty(name)?TRUE:FALSE);
+    return (GetProperty(name)?TRUE:FALSE);
 }
 
 // Clear all properties
@@ -1054,10 +1096,10 @@ wxPropertyValidator::~wxPropertyValidator(void)
 {}
 
 bool wxPropertyValidator::StringToFloat (wxChar *s, float *number) {
-       double num;
-       bool ok = StringToDouble (s, &num);
-       *number = (float) num;
-       return ok;
+    double num;
+    bool ok = StringToDouble (s, &num);
+    *number = (float) num;
+    return ok;
 }
 
 bool wxPropertyValidator::StringToDouble (wxChar *s, double *number) {
@@ -1065,20 +1107,20 @@ bool wxPropertyValidator::StringToDouble (wxChar *s, double *number) {
     wxChar *value_ptr;
     *number = wxStrtod (s, &value_ptr);
     if (value_ptr) {
-               int len = wxStrlen (value_ptr);
-               for (int i = 0; i < len; i++) {
-                       ok = (wxIsspace (value_ptr[i]) != 0);
-                       if (!ok) return FALSE;
-               }
+        int len = wxStrlen (value_ptr);
+        for (int i = 0; i < len; i++) {
+            ok = (wxIsspace (value_ptr[i]) != 0);
+            if (!ok) return FALSE;
+        }
     }
     return ok;
 }
 
 bool wxPropertyValidator::StringToInt (wxChar *s, int *number) {
-       long num;
-       bool ok = StringToLong (s, &num);
-       *number = (int) num;
-       return ok;
+    long num;
+    bool ok = StringToLong (s, &num);
+    *number = (int) num;
+    return ok;
 }
 
 bool wxPropertyValidator::StringToLong (wxChar *s, long *number) {
@@ -1086,31 +1128,33 @@ bool wxPropertyValidator::StringToLong (wxChar *s, long *number) {
     wxChar *value_ptr;
     *number = wxStrtol (s, &value_ptr, 10);
     if (value_ptr) {
-               int len = wxStrlen (value_ptr);
-               for (int i = 0; i < len; i++) {
-                       ok = (wxIsspace (value_ptr[i]) != 0);
-                       if (!ok) return FALSE;
-               }
+        int len = wxStrlen (value_ptr);
+        for (int i = 0; i < len; i++) {
+            ok = (wxIsspace (value_ptr[i]) != 0);
+            if (!ok) return FALSE;
+        }
     }
     return ok;
 }
 
 wxChar *wxPropertyValidator::FloatToString (float number) {
-       static wxChar buf[20];
-       wxSprintf (buf, wxT("%.6g"), number);
-       return buf;
+    static wxChar buf[20];
+    wxSprintf (buf, wxT("%.6g"), number);
+    return buf;
 }
 
 wxChar *wxPropertyValidator::DoubleToString (double number) {
-       static wxChar buf[20];
-       wxSprintf (buf, wxT("%.6g"), number);
-       return buf;
+    static wxChar buf[20];
+    wxSprintf (buf, wxT("%.6g"), number);
+    return buf;
 }
 
 wxChar *wxPropertyValidator::IntToString (int number) {
-       return ::IntToString (number);
+    return ::IntToString (number);
 }
 
 wxChar *wxPropertyValidator::LongToString (long number) {
-       return ::LongToString (number);
+    return ::LongToString (number);
   }
+
+#endif // wxUSE_PROPSHEET