Add Event.

ftxui/include/ftxui/component/Event.hpp

@@ -1,34 +0,0 @@
-#ifndef FTXUI_COMPONENT_EVENT
-#define FTXUI_COMPONENT_EVENT
-
-namespace ftxui {
-namespace component {
-
-struct Event{
-  // --- Character ---
-  static Event Character(char);
-
-  // --- Arrow ---
-  static Event Arrow_Left;
-  static Event Arrow_Right;
-  static Event Arrow_Up;
-  static Event Arrow_Down;
-  
-  // --- Other ---
-  static Event Backspace;
-  static Event Delete;
-  static Event Escape;
-  static Event F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12;
-
-  // Internal representation.
-  int values [3];
-  Event(int values[3]) : values(values);
-
-};
-
-
-} // namespace component
-} // namespace ftxui
-
-
-#endif /* end of include guard: FTXUI_COMPONENT_EVENT */

ftxui/include/ftxui/component/component.hpp

@@ -1,8 +1,9 @@
 #ifndef FTXUI_COMPONENT_COMPONENT_HPP
 #define FTXUI_COMPONENT_COMPONENT_HPP
 
-#include "ftxui/dom/elements.hpp"
 #include "ftxui/component/delegate.hpp"
+#include "ftxui/dom/elements.hpp"
+#include "ftxui/event.hpp"
 
 namespace ftxui {
 namespace component {
@@ -20,7 +21,7 @@ class Component {
   virtual dom::Element Render();
 
   // Handle an event. By default, it calls this function on each children.
-  virtual bool Event(int key);
+  virtual bool OnEvent(Event even);
 
   // If this component contains children, this indicates which one is active. It
   // can be none of them.

ftxui/include/ftxui/component/component_direction.hpp

@@ -10,12 +10,12 @@ namespace component {
 class ComponentDirection : public Component {
  public:
   ComponentDirection(Delegate* delegate);
-  bool Event(int key) override;
+  bool OnEvent(Event) override;
   Component* GetActiveChild() override;
 
  protected:
   void Focus(Component* child);
-  virtual bool HandleDirection(int key) = 0;
+  virtual bool HandleDirection(Event) = 0;
   Component* active_child_;
 };
 

ftxui/include/ftxui/component/component_horizontal.hpp

@@ -10,8 +10,8 @@ namespace component {
 // It assumes its children are put in the horizontal direction.
 class ComponentHorizontal : public ComponentDirection {
  public:
-  ComponentHorizontal(Delegate* delegate);
-  bool HandleDirection(int key) override;
+  ComponentHorizontal(Delegate*);
+  bool HandleDirection(Event) override;
 };
 
 } // namespace component

ftxui/include/ftxui/component/component_vertical.hpp

@@ -10,8 +10,8 @@ namespace component {
 // It assumes its children are put in the vertical direction.
 class ComponentVertical : public ComponentDirection {
  public:
-  ComponentVertical(Delegate* delegate);
-  bool HandleDirection(int key) override;
+  ComponentVertical(Delegate*);
+  bool HandleDirection(Event) override;
 };
 
 } // namespace component

ftxui/include/ftxui/component/input.hpp

@@ -0,0 +1,35 @@
+#ifndef FTXUI_COMPONENT_INPUT_H_
+#define FTXUI_COMPONENT_INPUT_H_
+
+#include "ftxui/component/component.hpp"
+#include <functional>
+
+namespace ftxui {
+namespace component {
+
+class Input : public Component {
+ public:
+  // Constructor.
+  Input(Delegate*);
+  ~Input() override;
+
+  // State.
+  std::wstring content = L"input";
+  std::wstring placeholder = L"placeholder";
+
+  // State update callback.
+  std::function<void()> on_change = [](){};
+  std::function<void()> on_enter = [](){};
+
+  // Component implementation.
+  dom::Element Render() override;
+	bool OnEvent(Event) override;
+
+ private:
+  int cursor_position = 0;
+};
+
+}  // namespace component
+}  // namespace ftxui
+
+#endif /* end of include guard: FTXUI_COMPONENT_INPUT_H_ */

ftxui/include/ftxui/component/menu.hpp

@@ -22,7 +22,7 @@ class Menu : public Component {
 
   // Component implementation.
   dom::Element Render() override;
-	bool Event(int key) override;
+	bool OnEvent(Event) override;
 };
 
 }  // namespace component

ftxui/include/ftxui/component/toggle.hpp

@@ -22,7 +22,7 @@ class Toggle : public Component {
 
   // Component implementation.
   dom::Element Render() override;
-	bool Event(int key) override;
+  bool OnEvent(Event) override;
 };
 
 }  // namespace component

ftxui/include/ftxui/event.hpp

@@ -0,0 +1,37 @@
+#ifndef FTXUI_EVENT_H_
+#define FTXUI_EVENT_H_
+
+#include <vector>
+#include <array>
+
+namespace ftxui {
+
+struct Event{
+ public:
+  // --- Character ---
+  static Event Character(char);
+
+  // --- Arrow ---
+  static Event ArrowLeft;
+  static Event ArrowRight;
+  static Event ArrowUp;
+  static Event ArrowDown;
+  
+  // --- Other ---
+  static Event Backspace;
+  static Event Delete;
+  static Event Return;
+  static Event Escape;
+  static Event F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12;
+
+  bool operator==(const Event& other) { return values == other.values; }
+
+  // Internal representation.
+  std::array<char, 5> values = {0, 0, 0, 0, 0};
+};
+
+
+} // namespace ftxui
+
+
+#endif /* end of include guard: FTXUI_EVENT_H_ */