Add flags, file mgmt, widgets to zeml

src/app/gui/zeml.h

@@ -54,15 +54,20 @@ enum class WidgetType {
   TableNextColumn,
   CollapsingHeader,
   Columns,
+  Checkbox,
   Selectable,
   Function,
   BeginChild,
   BeginMenuBar,
   BeginMenu,
+  BeginTabBar,
+  BeginTabItem,
   MenuItem,
   Separator,
   HexInputByte,
   HexInputWord,
+  Canvas,
+  Definition,
 };
 
 /**
@@ -82,16 +87,17 @@ enum class WidgetType {
  */
 struct WidgetAttributes {
   std::string id;
-  std::string title;  // For Window, Button
-  double min;         // For Slider
-  double max;         // For Slider
-  double value;       // For Slidecar
-  std::string text;   // For Text, Button
-  int count = 0;      // For Columns
-  ImVec2 size = ImVec2(0, 0);
-  void* flags = nullptr;
-
-  void* data = nullptr;
+  std::string title;           // For Window, Button
+  std::string text;            // For Text, Button
+  double min;                  // For Slider
+  double max;                  // For Slider
+  double value;                // For Slidecar
+  float width;                 // For Columns
+  int count = 0;               // For Columns
+  ImVec2 size = ImVec2(0, 0);  // For BeginChild
+  bool* selected = nullptr;    // For Selectable
+  void* flags = nullptr;       // For Various
+  void* data = nullptr;        // For Various
 };
 
 /**
@@ -104,8 +110,7 @@ enum class ActionType { Click, Change, Run };
  */
 struct Action {
   ActionType type;
-  std::function<void()> callback;  // Using std::function to hold lambda
-                                   // expressions or function pointers
+  std::function<void()> callback;
 };
 
 /**
@@ -149,11 +154,25 @@ void Bind(Node* node, std::function<void()> callback);
  */
 void BindAction(Node* node, ActionType type, std::function<void()> callback);
 
+/**
+ * @brief Bind a selectable node
+ */
+void BindSelectable(Node* node, bool* selected, std::function<void()> callback);
+
 /**
  * @brief Map a string to a widget type
  */
 WidgetType MapType(const std::string& type);
 
+/**
+ * @brief Parse a zeml definition
+ */
+void ParseDefinitions(const std::vector<Token>& tokens, size_t& index,
+                      std::map<std::string, Node>& definitions);
+
+void ParseFlags(const WidgetType& type, const std::string& flags,
+                WidgetAttributes& flags_ptr);
+
 /**
  * @brief ParseNode attributes for a widget
  */
@@ -162,13 +181,14 @@ WidgetAttributes ParseAttributes(
     const std::map<std::string, void*>& data_bindings = {});
 
 /**
- * @brief ParseNode a zeml node
+ * @brief Parse a zeml node
  */
 Node ParseNode(const std::vector<Token>& tokens, size_t& index,
-               const std::map<std::string, void*>& data_bindings = {});
+               const std::map<std::string, void*>& data_bindings = {},
+               const std::map<std::string, Node>& definitions = {});
 
 /**
- * @brief ParseNode a zeml string
+ * @brief Parse a zeml string
  */
 Node Parse(const std::string& yazon_input,
            const std::map<std::string, void*>& data_bindings = {});
@@ -183,6 +203,8 @@ void Render(Node& node);
  */
 void ExecuteActions(const std::vector<Action>& actions, ActionType type);
 
+std::string LoadFile(const std::string& filename);
+
 }  // namespace zeml
 }  // namespace gui
 }  // namespace app