Add FILE_NAME_WITH_PATH_CHAR_VALIDATOR, a custom wxValidator which allows file names with paths, in schematic sheet editor

( FILE_NAME_CHAR_VALIDATOR previously used in this dialog does not allow chars used in path names, like / and on Windows \ and : )

eeschema/dialogs/dialog_sch_sheet_props.cpp

@@ -6,7 +6,7 @@
 DIALOG_SCH_SHEET_PROPS::DIALOG_SCH_SHEET_PROPS( wxWindow* parent ) :
     DIALOG_SCH_SHEET_PROPS_BASE( parent )
 {
-    m_textFileName->SetValidator( FILE_NAME_CHAR_VALIDATOR() );
+    m_textFileName->SetValidator( FILE_NAME_WITH_PATH_CHAR_VALIDATOR() );
     m_textFileName->SetFocus();
     m_sdbSizer1OK->SetDefault();
 }

include/validators.h

@@ -43,7 +43,7 @@ public:
         wxTextValidator( wxFILTER_EXCLUDE_CHAR_LIST, aValue )
     {
         // The Windows (DOS) file system forbidden characters already include the forbidden
-        // file name characters for both Posix and OSX systems.  The characters \/*?|"<> are
+        // file name characters for both Posix and OSX systems.  The characters \/:*?|"<> are
         // illegal and filtered by the validator.
         wxString illegalChars = wxFileName::GetForbiddenChars( wxPATH_DOS );
         wxTextValidator nameValidator( wxFILTER_EXCLUDE_CHAR_LIST );
@@ -55,3 +55,38 @@ public:
         SetExcludes( illegalCharList );
     }
 };
+
+/**
+ * Class FILE_NAME_WITH_PATH_CHAR_VALIDATOR
+ *
+ * This class provides a custom wxValidator object for limiting the allowable characters when
+ * defining file names with path, for instance in schematic sheet file names.
+ */
+class FILE_NAME_WITH_PATH_CHAR_VALIDATOR : public wxTextValidator
+{
+public:
+    FILE_NAME_WITH_PATH_CHAR_VALIDATOR( wxString* aValue = NULL ) :
+        wxTextValidator( wxFILTER_EXCLUDE_CHAR_LIST, aValue )
+    {
+        // The Windows (DOS) file system forbidden characters already include the forbidden
+        // file name characters for both Posix and OSX systems.  The characters *?|"<> are
+        // illegal and filtered by the validator, but /\: are valid (\ and : only on Windows.
+        wxString illegalChars = wxFileName::GetForbiddenChars(wxPATH_DOS );
+        wxTextValidator nameValidator( wxFILTER_EXCLUDE_CHAR_LIST );
+        wxArrayString illegalCharList;
+
+        for( unsigned i = 0;  i < illegalChars.size();  i++ )
+        {
+            if( illegalChars[i] == '/' )
+                continue;
+
+#if defined (__WINDOWS__)
+            if( illegalChars[i] == '\\' || illegalChars[i] == ':' )
+                continue;
+#endif
+            illegalCharList.Add( wxString( illegalChars[i] ) );
+        }
+
+        SetExcludes( illegalCharList );
+    }
+};