Major Update:

- Implement new ApplicationCore:
  - Manage Tools: Log, DataTree, JSONparser & Selector
  - Load configuration, Manage FunctionBlocks
- FunctionCore & dirived classes, SignalCore:
  - affects: SelectableCore, DeviceCore, FileCore, WatchdogCore
  - Do not pass Log()
  - Define and pass Type
  - Update/reduce included headers
  - Use ProcessName and Application global vars
  - Get Log, DataTree from Application
  - Use virtual Init() function to set must have Channels/Handles
- DataTreeCore:
  - Bug fix: Check if child members exist and destroy in SetValuePtr()
  - Add method GetFirstChild with BaseMember & Path
  - Bug fix: do not use RootMember if no Parent in GetChildxxx() methods
- SignalCore, SelectCore:
  - Use Application->Log()
- FunctionCore:
  - Add itself to Application (function list)
  - Add parameter: LinkConfigMember, Type
  - Use virtual LoadConfigData() to configure from DataTree
  - Rename methods: LoadConfig() -> InitConfig(),
      InitLogging() -> SetLogParam(), SetDebugLevel() -> SetLogLevel()
  - Add method: GetType(), LoadChannelLinkData(), InitChannelLinks()
  - Modify LinkIn/OutputChannel() to use name for InFunction, not pointer
- SelectableCore & Dirived classes:
  - Affects DeviceCore & WatchdogClient
  - Rename parameter: Select -> Selector, BaseMember -> ConfigMember
  - Get Selector from Application->Selector
  - Change Handles JSON structure from Array to Key:Value pairs
  - Bug fix: check if Selector exist during Input()
  - Bug fix: do not set PortNo if not exist

DataTreeCore.cpp

@@ -273,28 +273,6 @@ TDataMember *  CDataTree::GetMember( TDataMember * BaseMember, const char * Path
 }
 //---------------------------------------------------------------------------
 
-TDataMember *  CDataTree::GetFirstChild( TDataMember * Parent )
-{
-    // Get Parent
-    if (!Parent)
-        Parent = RootMember;
-
-    // Return child
-    return Parent->FirstChild;
-}
-//---------------------------------------------------------------------------
-
-TDataMember * CDataTree::GetNextChild( TDataMember * PrevChild )
-{
-    // Validate
-    if (!PrevChild)
-        return NULL;
-
-    // Return next child
-    return PrevChild->Next;
-}
-//---------------------------------------------------------------------------
-
 TDataMember * CDataTree::GetIndexChild( TDataMember * Parent, const int Index )
 {
     TDataMember     * Child;
@@ -302,7 +280,7 @@ TDataMember * CDataTree::GetIndexChild( TDataMember * Parent, const int Index )
 
     // Get Parent
     if (!Parent)
-        Parent = RootMember;
+        return NULL;
 
     // Get Indexed child
     Count = 0;
@@ -317,6 +295,20 @@ TDataMember * CDataTree::GetIndexChild( TDataMember * Parent, const int Index )
 }
 //---------------------------------------------------------------------------
 
+TDataMember * CDataTree::GetFirstChild( TDataMember * BaseMember, const char * Path, bool Create )
+{
+    TDataMember     * Member;
+
+    // Validate
+    if (!(Member = GetMember( BaseMember, Path, Create ))) {
+        return NULL;
+    }
+
+    // Return child
+    return Member->FirstChild;
+}
+//---------------------------------------------------------------------------
+
 bool  CDataTree::Delete( TDataMember * BaseMember, const char * Path )
 {
     TDataMember     * Parent;
@@ -357,7 +349,7 @@ bool  CDataTree::DeleteAll()
 bool  CDataTree::SetValuePtr( TDataMember * Member, EDataType Type, char * Value, int Len )
 {
     // Clear previous value
-    if (Member->Value != NULL) {
+    if (Member->Value != NULL || (Member->FirstChild != NULL)) {
         DestroyValue( Member );
     }