Remove input.hpp

CMakeLists.txt

@@ -78,7 +78,6 @@ add_library(component STATIC
   include/ftxui/component/component_base.hpp
   include/ftxui/component/container.hpp
   include/ftxui/component/event.hpp
-  include/ftxui/component/input.hpp
   include/ftxui/component/menu.hpp
   include/ftxui/component/mouse.hpp
   include/ftxui/component/radiobox.hpp

examples/component/homescreen.cpp

@@ -12,7 +12,6 @@
 #include "ftxui/component/component.hpp"  // for Checkbox, Renderer, Horizontal, Vertical, Input, Menu, Radiobox, Tab, Toggle
 #include "ftxui/component/component_base.hpp"  // for ComponentBase
 #include "ftxui/component/event.hpp"           // for Event, Event::Custom
-#include "ftxui/component/input.hpp"           // for InputBase
 #include "ftxui/component/screen_interactive.hpp"  // for Component, ScreenInteractive
 #include "ftxui/dom/elements.hpp"  // for text, operator|, color, bgcolor, Element, filler, size, vbox, flex, hbox, graph, separator, EQUAL, WIDTH, hcenter, bold, border, window, HEIGHT, Elements, hflow, flex_grow, frame, gauge, LESS_THAN, spinner, dim, GREATER_THAN
 #include "ftxui/screen/color.hpp"  // for Color, Color::BlueLight, Color::RedLight, Color::Black, Color::Blue, Color::Cyan, Color::CyanLight, Color::GrayDark, Color::GrayLight, Color::Green, Color::GreenLight, Color::Magenta, Color::MagentaLight, Color::Red, Color::White, Color::Yellow, Color::YellowLight, Color::Default

include/ftxui/component/component.hpp

@@ -26,22 +26,22 @@ std::shared_ptr<T> Make(Args&&... args) {
 
 Component Button(ConstStringRef label,
                  std::function<void()> on_click,
-                 ConstRef<ButtonOption> = {});
+                 Ref<ButtonOption> = {});
 Component Checkbox(ConstStringRef label,
                    bool* checked,
-                   ConstRef<CheckboxOption> option = {});
+                   Ref<CheckboxOption> option = {});
 Component Input(StringRef content,
                 ConstStringRef placeholder,
-                ConstRef<InputOption> option = {});
+                Ref<InputOption> option = {});
 Component Menu(const std::vector<std::wstring>* entries,
                int* selected_,
-               ConstRef<MenuOption> = {});
+               Ref<MenuOption> = {});
 Component Radiobox(const std::vector<std::wstring>* entries,
                    int* selected_,
-                   ConstRef<RadioboxOption> option = {});
+                   Ref<RadioboxOption> option = {});
 Component Toggle(const std::vector<std::wstring>* entries,
                  int* selected,
-                 ConstRef<ToggleOption> option = {});
+                 Ref<ToggleOption> option = {});
 template <class T>  // T = {int, float, long}
 Component Slider(StringRef label, T* value, T min, T max, T increment);
 Component Renderer(Component child, std::function<Element()>);

include/ftxui/component/component_options.hpp

@@ -2,6 +2,7 @@
 #define FTXUI_COMPONENT_COMPONENT_OPTIONS_HPP
 
 #include <ftxui/dom/elements.hpp>
+#include <ftxui/util/ref.hpp>
 
 namespace ftxui {
 
@@ -42,6 +43,8 @@ struct InputOption {
   std::function<void()> on_change = [] {};
   /// Called when the user presses enter.
   std::function<void()> on_enter = [] {};
+
+  Ref<int> cursor_position = 0;
 };
 
 /// @brief Option for the Radiobox component.

include/ftxui/component/input.hpp

@@ -1,52 +0,0 @@
-#ifndef FTXUI_COMPONENT_INPUT_H_
-#define FTXUI_COMPONENT_INPUT_H_
-
-#include <functional>  // for function
-#include <string>      // for wstring
-
-#include "ftxui/component/component.hpp"       // for Component
-#include "ftxui/component/component_base.hpp"  // for ComponentBase
-#include "ftxui/dom/elements.hpp"              // for Element
-#include "ftxui/screen/box.hpp"                // for Box
-#include "ftxui/screen/string.hpp"             // for ConstStringRef, StringRef
-
-namespace ftxui {
-struct Event;
-
-/// @brief An input box. The user can type text into it.
-/// @ingroup component.
-class InputBase : public ComponentBase {
- public:
-  // Access this interface from a Component
-  static InputBase* From(Component component);
-
-  // Constructor.
-  InputBase(StringRef content,
-            ConstStringRef placeholder,
-            ConstRef<InputOption> option = {});
-  ~InputBase() override = default;
-
-  // State.
-  int cursor_position = 0;
-
-  // Component implementation.
-  Element Render() override;
-  bool OnEvent(Event) override;
-
- private:
-  StringRef content_;
-  ConstStringRef placeholder_;
-
-  bool OnMouseEvent(Event);
-  Box input_box_;
-  Box cursor_box_;
-  ConstRef<InputOption> option_;
-};
-
-}  // namespace ftxui
-
-#endif /* end of include guard: FTXUI_COMPONENT_INPUT_H_ */
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

include/ftxui/component/menu.hpp

@@ -24,7 +24,7 @@ class MenuBase : public ComponentBase {
   // Constructor.
   MenuBase(const std::vector<std::wstring>* entries,
            int* selected_,
-           ConstRef<MenuOption> option = {});
+           Ref<MenuOption> option = {});
   ~MenuBase() override = default;
 
   // State.
@@ -37,7 +37,7 @@ class MenuBase : public ComponentBase {
  protected:
   const std::vector<std::wstring>* const entries_;
   int* selected_ = 0;
-  ConstRef<MenuOption> option_;
+  Ref<MenuOption> option_;
 
   bool OnMouseEvent(Event);
 

include/ftxui/component/radiobox.hpp

@@ -24,7 +24,7 @@ class RadioboxBase : public ComponentBase {
   // Constructor.
   RadioboxBase(const std::vector<std::wstring>* entries,
                int* selected,
-               ConstRef<RadioboxOption> option = {});
+               Ref<RadioboxOption> option = {});
   ~RadioboxBase() override = default;
 
   int focused = 0;
@@ -40,7 +40,7 @@ class RadioboxBase : public ComponentBase {
   bool OnMouseEvent(Event event);
   int cursor_position = 0;
   std::vector<Box> boxes_;
-  ConstRef<RadioboxOption> option_;
+  Ref<RadioboxOption> option_;
 };
 
 }  // namespace ftxui

include/ftxui/component/toggle.hpp

@@ -23,7 +23,7 @@ class ToggleBase : public ComponentBase {
   // Constructor.
   ToggleBase(const std::vector<std::wstring>* entries,
              int* selected,
-             ConstRef<ToggleOption> option = {});
+             Ref<ToggleOption> option = {});
   ~ToggleBase() override = default;
 
   // State.
@@ -39,7 +39,7 @@ class ToggleBase : public ComponentBase {
 
   bool OnMouseEvent(Event event);
   std::vector<Box> boxes_;
-  ConstRef<ToggleOption> option_;
+  Ref<ToggleOption> option_;
 };
 
 }  // namespace ftxui

include/ftxui/util/ref.hpp

@@ -6,7 +6,7 @@
 
 namespace ftxui {
 
-/// @brief An adapter. Own or reference a constant object.
+/// @brief An adapter. Own or reference an immutable object.
 template <typename T>
 class ConstRef {
  public:
@@ -14,6 +14,7 @@ class ConstRef {
   ConstRef(T t) : owned_(t) {}
   ConstRef(const T* t) : address_(t) {}
   const T& operator*() { return address_ ? *address_ : owned_; }
+  const T& operator()() { return address_ ? *address_ : owned_; }
   const T* operator->() { return address_ ? address_ : &owned_; }
 
  private:
@@ -21,6 +22,22 @@ class ConstRef {
   const T* address_ = nullptr;
 };
 
+/// @brief An adapter. Own or reference an mutable object.
+template <typename T>
+class Ref{
+ public:
+  Ref() {}
+  Ref(T t) : owned_(t) {}
+  Ref(T* t) : address_(t) {}
+  T& operator*() { return address_ ? *address_ : owned_; }
+  T& operator()() { return address_ ? *address_ : owned_; }
+  T* operator->() { return address_ ? address_ : &owned_; }
+
+ private:
+  T owned_;
+  T* address_ = nullptr;
+};
+
 /// @brief An adapter. Own or reference a constant string. For convenience, this
 /// class convert multiple mutable string toward a shared representation.
 class StringRef {

src/ftxui/component/button.cpp

@@ -16,7 +16,7 @@ class ButtonBase : public ComponentBase {
  public:
   ButtonBase(ConstStringRef label,
              std::function<void()> on_click,
-             ConstRef<ButtonOption> option)
+             Ref<ButtonOption> option)
       : label_(label), on_click_(on_click), option_(std::move(option)) {}
 
   ~ButtonBase() override = default;
@@ -55,7 +55,7 @@ class ButtonBase : public ComponentBase {
   ConstStringRef label_;
   std::function<void()> on_click_;
   Box box_;
-  ConstRef<ButtonOption> option_;
+  Ref<ButtonOption> option_;
 };
 
 }  // namespace
@@ -84,7 +84,7 @@ class ButtonBase : public ComponentBase {
 /// ```
 Component Button(ConstStringRef label,
                  std::function<void()> on_click,
-                 ConstRef<ButtonOption> option) {
+                 Ref<ButtonOption> option) {
   return Make<ButtonBase>(label, std::move(on_click), std::move(option));
 }
 

src/ftxui/component/checkbox.cpp

@@ -25,7 +25,7 @@ class CheckboxBase : public ComponentBase {
  public:
   CheckboxBase(ConstStringRef label,
                bool* state,
-               ConstRef<CheckboxOption> option)
+               Ref<CheckboxOption> option)
       : label_(label), state_(state), option_(std::move(option)) {
 #if defined(FTXUI_MICROSOFT_TERMINAL_FALLBACK)
     // Microsoft terminal do not use fonts able to render properly the default
@@ -84,7 +84,7 @@ class CheckboxBase : public ComponentBase {
   ConstStringRef label_;
   bool* const state_;
   Box box_;
-  ConstRef<CheckboxOption> option_;
+  Ref<CheckboxOption> option_;
 };
 }  // namespace
 
@@ -111,7 +111,7 @@ class CheckboxBase : public ComponentBase {
 /// ```
 Component Checkbox(ConstStringRef label,
                    bool* checked,
-                   ConstRef<CheckboxOption> option) {
+                   Ref<CheckboxOption> option) {
   return Make<CheckboxBase>(label, checked, std::move(option));
 }
 

src/ftxui/component/input.cpp

@@ -3,13 +3,166 @@
 #include <string>     // for wstring, allocator, basic_string
 
 #include "ftxui/component/captured_mouse.hpp"  // for CapturedMouse
+#include "ftxui/component/component.hpp"       // for Component
+#include "ftxui/component/component_base.hpp"  // for Component
 #include "ftxui/component/event.hpp"  // for Event, Event::ArrowLeft, Event::ArrowRight, Event::Backspace, Event::Custom, Event::Delete, Event::End, Event::Home, Event::Return
-#include "ftxui/component/input.hpp"
 #include "ftxui/component/mouse.hpp"  // for Mouse, Mouse::Left, Mouse::Pressed
 #include "ftxui/component/screen_interactive.hpp"  // for Component
+#include "ftxui/util/ref.hpp"                      // for Component
 
 namespace ftxui {
 
+/// @brief An input box. The user can type text into it.
+/// @ingroup component.
+class InputBase : public ComponentBase {
+ public:
+  InputBase(StringRef content,
+            ConstStringRef placeholder,
+            Ref<InputOption> option)
+      : content_(content), placeholder_(placeholder), option_(option) {}
+  ~InputBase() override = default;
+
+  int& cursor_position() { return *(option_->cursor_position); }
+
+  // Component implementation:
+  Element Render() override {
+    cursor_position() =
+        std::max(0, std::min<int>(content_->size(), cursor_position()));
+    auto main_decorator = flex | size(HEIGHT, EQUAL, 1);
+    bool is_focused = Focused();
+
+    // placeholder.
+    if (content_->size() == 0) {
+      if (is_focused)
+        return text(*placeholder_) | focus | dim | inverted | main_decorator |
+               reflect(input_box_);
+      else
+        return text(*placeholder_) | dim | main_decorator | reflect(input_box_);
+    }
+
+    // Not focused.
+    if (!is_focused)
+      return text(*content_) | main_decorator | reflect(input_box_);
+
+    std::wstring part_before_cursor = content_->substr(0, cursor_position());
+    std::wstring part_at_cursor = cursor_position() < (int)content_->size()
+                                      ? content_->substr(cursor_position(), 1)
+                                      : L" ";
+    std::wstring part_after_cursor =
+        cursor_position() < (int)content_->size() - 1
+            ? content_->substr(cursor_position() + 1)
+            : L"";
+    auto focused = is_focused ? focus : select;
+
+    // clang-format off
+  return
+    hbox(
+      text(part_before_cursor),
+      text(part_at_cursor) | underlined | focused | reflect(cursor_box_),
+      text(part_after_cursor)
+    ) | flex | inverted | frame | main_decorator | reflect(input_box_);
+    // clang-format on
+  }
+
+  bool OnEvent(Event event) override {
+    cursor_position() =
+        std::max(0, std::min<int>(content_->size(), cursor_position()));
+
+    if (event.is_mouse())
+      return OnMouseEvent(event);
+
+    std::wstring c;
+
+    // Backspace.
+    if (event == Event::Backspace) {
+      if (cursor_position() == 0)
+        return false;
+      content_->erase(cursor_position() - 1, 1);
+      cursor_position()--;
+      option_->on_change();
+      return true;
+    }
+
+    // Delete
+    if (event == Event::Delete) {
+      if (cursor_position() == int(content_->size()))
+        return false;
+      content_->erase(cursor_position(), 1);
+      option_->on_change();
+      return true;
+    }
+
+    // Enter.
+    if (event == Event::Return) {
+      option_->on_enter();
+      return true;
+    }
+
+    if (event == Event::Custom) {
+      return false;
+    }
+
+    if (event == Event::ArrowLeft && cursor_position() > 0) {
+      cursor_position()--;
+      return true;
+    }
+
+    if (event == Event::ArrowRight &&
+        cursor_position() < (int)content_->size()) {
+      cursor_position()++;
+      return true;
+    }
+
+    if (event == Event::Home) {
+      cursor_position() = 0;
+      return true;
+    }
+
+    if (event == Event::End) {
+      cursor_position() = (int)content_->size();
+      return true;
+    }
+
+    // Content
+    if (event.is_character()) {
+      content_->insert(cursor_position(), 1, event.character());
+      cursor_position()++;
+      option_->on_change();
+      return true;
+    }
+    return false;
+  }
+
+ private:
+  bool OnMouseEvent(Event event) {
+    if (!CaptureMouse(event))
+      return false;
+    if (!input_box_.Contain(event.mouse().x, event.mouse().y))
+      return false;
+
+    TakeFocus();
+
+    if (event.mouse().button == Mouse::Left &&
+        event.mouse().motion == Mouse::Pressed) {
+      int new_cursor_position =
+          cursor_position() + event.mouse().x - cursor_box_.x_min;
+      new_cursor_position =
+          std::max(0, std::min<int>(content_->size(), new_cursor_position));
+      if (cursor_position() != new_cursor_position) {
+        cursor_position() = new_cursor_position;
+        option_->on_change();
+      }
+    }
+    return true;
+  }
+  StringRef content_;
+  ConstStringRef placeholder_;
+
+  Box input_box_;
+  Box cursor_box_;
+  Ref<InputOption> option_;
+};
+
 /// @brief An input box for editing text.
 /// @param content The editable content.
 /// @param placeholder The text displayed when content is still empty.
@@ -33,149 +186,10 @@ namespace ftxui {
 /// ```
 Component Input(StringRef content,
                 ConstStringRef placeholder,
-                ConstRef<InputOption> option) {
+                Ref<InputOption> option) {
   return Make<InputBase>(content, placeholder, std::move(option));
 }
 
-// static
-InputBase* InputBase::From(Component component) {
-  return static_cast<InputBase*>(component.get());
-}
-
-InputBase::InputBase(StringRef content,
-                     ConstStringRef placeholder,
-                     ConstRef<InputOption> option)
-    : content_(content), placeholder_(placeholder), option_(option) {}
-
-// Component implementation.
-Element InputBase::Render() {
-  cursor_position =
-      std::max(0, std::min<int>(content_->size(), cursor_position));
-  auto main_decorator = flex | size(HEIGHT, EQUAL, 1);
-  bool is_focused = Focused();
-
-  // placeholder.
-  if (content_->size() == 0) {
-    if (is_focused)
-      return text(*placeholder_) | focus | dim | inverted | main_decorator |
-             reflect(input_box_);
-    else
-      return text(*placeholder_) | dim | main_decorator | reflect(input_box_);
-  }
-
-  // Not focused.
-  if (!is_focused)
-    return text(*content_) | main_decorator | reflect(input_box_);
-
-  std::wstring part_before_cursor = content_->substr(0, cursor_position);
-  std::wstring part_at_cursor = cursor_position < (int)content_->size()
-                                    ? content_->substr(cursor_position, 1)
-                                    : L" ";
-  std::wstring part_after_cursor = cursor_position < (int)content_->size() - 1
-                                       ? content_->substr(cursor_position + 1)
-                                       : L"";
-  auto focused = is_focused ? focus : select;
-
-  // clang-format off
-  return
-    hbox(
-      text(part_before_cursor),
-      text(part_at_cursor) | underlined | focused | reflect(cursor_box_),
-      text(part_after_cursor)
-    ) | flex | inverted | frame | main_decorator | reflect(input_box_);
-  // clang-format on
-}
-
-bool InputBase::OnEvent(Event event) {
-  cursor_position =
-      std::max(0, std::min<int>(content_->size(), cursor_position));
-
-  if (event.is_mouse())
-    return OnMouseEvent(event);
-
-  std::wstring c;
-
-  // Backspace.
-  if (event == Event::Backspace) {
-    if (cursor_position == 0)
-      return false;
-    content_->erase(cursor_position - 1, 1);
-    cursor_position--;
-    option_->on_change();
-    return true;
-  }
-
-  // Delete
-  if (event == Event::Delete) {
-    if (cursor_position == int(content_->size()))
-      return false;
-    content_->erase(cursor_position, 1);
-    option_->on_change();
-    return true;
-  }
-
-  // Enter.
-  if (event == Event::Return) {
-    option_->on_enter();
-    return true;
-  }
-
-  if (event == Event::Custom) {
-    return false;
-  }
-
-  if (event == Event::ArrowLeft && cursor_position > 0) {
-    cursor_position--;
-    return true;
-  }
-
-  if (event == Event::ArrowRight && cursor_position < (int)content_->size()) {
-    cursor_position++;
-    return true;
-  }
-
-  if (event == Event::Home) {
-    cursor_position = 0;
-    return true;
-  }
-
-  if (event == Event::End) {
-    cursor_position = (int)content_->size();
-    return true;
-  }
-
-  // Content
-  if (event.is_character()) {
-    content_->insert(cursor_position, 1, event.character());
-    cursor_position++;
-    option_->on_change();
-    return true;
-  }
-  return false;
-}
-
-bool InputBase::OnMouseEvent(Event event) {
-  if (!CaptureMouse(event))
-    return false;
-  if (!input_box_.Contain(event.mouse().x, event.mouse().y))
-    return false;
-
-  TakeFocus();
-
-  if (event.mouse().button == Mouse::Left &&
-      event.mouse().motion == Mouse::Pressed) {
-    int new_cursor_position =
-        cursor_position + event.mouse().x - cursor_box_.x_min;
-    new_cursor_position =
-        std::max(0, std::min<int>(content_->size(), new_cursor_position));
-    if (cursor_position != new_cursor_position) {
-      cursor_position = new_cursor_position;
-      option_->on_change();
-    }
-  }
-  return true;
-}
-
 }  // namespace ftxui
 
 // Copyright 2020 Arthur Sonzogni. All rights reserved.

src/ftxui/component/input_test.cpp

@@ -4,8 +4,9 @@
 #include <string>                   // for wstring, allocator
 
 #include "ftxui/component/captured_mouse.hpp"  // for ftxui
+#include "ftxui/component/component.hpp"
+#include "ftxui/component/component_options.hpp"
 #include "ftxui/component/event.hpp"  // for Event, Event::ArrowLeft, Event::ArrowRight, Event::Backspace, Event::Delete, Event::End, Event::Home
-#include "ftxui/component/input.hpp"
 #include "gtest/gtest_pred_impl.h"    // for Test, EXPECT_EQ, TEST
 
 using namespace ftxui;
@@ -13,59 +14,62 @@ using namespace ftxui;
 TEST(InputTest, Init) {
   std::wstring content;
   std::wstring placeholder;
-  Component input = Input(&content, &placeholder);
+  auto option = InputOption();
+  Component input = Input(&content, &placeholder, &option);
 
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 0);
+  EXPECT_EQ(option.cursor_position(), 0);
 }
 
 TEST(InputTest, Type) {
   std::wstring content;
   std::wstring placeholder;
-  Component input = Input(&content, &placeholder);
+  auto option = InputOption();
+  Component input = Input(&content, &placeholder, &option);
 
   input->OnEvent(Event::Character('a'));
   EXPECT_EQ(content, L"a");
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 1u);
+  EXPECT_EQ(option.cursor_position(), 1u);
 
   input->OnEvent(Event::Character('b'));
   EXPECT_EQ(content, L"ab");
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 2u);
+  EXPECT_EQ(option.cursor_position(), 2u);
 }
 
 TEST(InputTest, Arrow) {
   std::wstring content;
   std::wstring placeholder;
-  Component input = Input(&content, &placeholder);
+  auto option = InputOption();
+  auto input = Input(&content, &placeholder, &option);
 
   input->OnEvent(Event::Character('a'));
   input->OnEvent(Event::Character('b'));
   input->OnEvent(Event::Character('c'));
 
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 3u);
+  EXPECT_EQ(option.cursor_position(), 3u);
 
   input->OnEvent(Event::ArrowLeft);
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 2u);
+  EXPECT_EQ(option.cursor_position(), 2u);
 
   input->OnEvent(Event::ArrowLeft);
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 1u);
+  EXPECT_EQ(option.cursor_position(), 1u);
 
   input->OnEvent(Event::ArrowLeft);
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 0u);
+  EXPECT_EQ(option.cursor_position(), 0u);
 
   input->OnEvent(Event::ArrowLeft);
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 0u);
+  EXPECT_EQ(option.cursor_position(), 0u);
 
   input->OnEvent(Event::ArrowRight);
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 1u);
+  EXPECT_EQ(option.cursor_position(), 1u);
 
   input->OnEvent(Event::ArrowRight);
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 2u);
+  EXPECT_EQ(option.cursor_position(), 2u);
 
   input->OnEvent(Event::ArrowRight);
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 3u);
+  EXPECT_EQ(option.cursor_position(), 3u);
 
   input->OnEvent(Event::ArrowRight);
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 3u);
+  EXPECT_EQ(option.cursor_position(), 3u);
 }
 
 TEST(InputTest, Insert) {
@@ -97,16 +101,17 @@ TEST(InputTest, Insert) {
 TEST(InputTest, Home) {
   std::wstring content;
   std::wstring placeholder;
-  Component input = Input(&content, &placeholder);
+  auto option = InputOption();
+  auto input = Input(&content, &placeholder, &option);
 
   input->OnEvent(Event::Character('a'));
   input->OnEvent(Event::Character('b'));
   input->OnEvent(Event::Character('c'));
   EXPECT_EQ(content, L"abc");
 
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 3u);
+  EXPECT_EQ(option.cursor_position(), 3u);
   input->OnEvent(Event::Home);
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 0u);
+  EXPECT_EQ(option.cursor_position(), 0u);
 
   input->OnEvent(Event::Character('-'));
   EXPECT_EQ(content, L"-abc");
@@ -115,7 +120,8 @@ TEST(InputTest, Home) {
 TEST(InputTest, End) {
   std::wstring content;
   std::wstring placeholder;
-  Component input = Input(&content, &placeholder);
+  auto option = InputOption();
+  auto input = Input(&content, &placeholder, &option);
 
   input->OnEvent(Event::Character('a'));
   input->OnEvent(Event::Character('b'));
@@ -124,15 +130,16 @@ TEST(InputTest, End) {
   input->OnEvent(Event::ArrowLeft);
   input->OnEvent(Event::ArrowLeft);
 
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 1u);
+  EXPECT_EQ(option.cursor_position(), 1u);
   input->OnEvent(Event::End);
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 3u);
+  EXPECT_EQ(option.cursor_position(), 3u);
 }
 
 TEST(InputTest, Delete) {
   std::wstring content;
   std::wstring placeholder;
-  Component input = Input(&content, &placeholder);
+  auto option = InputOption();
+  auto input = Input(&content, &placeholder, &option);
 
   input->OnEvent(Event::Character('a'));
   input->OnEvent(Event::Character('b'));
@@ -140,21 +147,22 @@ TEST(InputTest, Delete) {
   input->OnEvent(Event::ArrowLeft);
 
   EXPECT_EQ(content, L"abc");
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 2u);
+  EXPECT_EQ(option.cursor_position(), 2u);
 
   input->OnEvent(Event::Delete);
   EXPECT_EQ(content, L"ab");
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 2u);
+  EXPECT_EQ(option.cursor_position(), 2u);
 
   input->OnEvent(Event::Delete);
   EXPECT_EQ(content, L"ab");
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 2u);
+  EXPECT_EQ(option.cursor_position(), 2u);
 }
 
 TEST(InputTest, Backspace) {
   std::wstring content;
   std::wstring placeholder;
-  Component input = Input(&content, &placeholder);
+  auto option = InputOption();
+  auto input = Input(&content, &placeholder, &option);
 
   input->OnEvent(Event::Character('a'));
   input->OnEvent(Event::Character('b'));
@@ -162,19 +170,19 @@ TEST(InputTest, Backspace) {
   input->OnEvent(Event::ArrowLeft);
 
   EXPECT_EQ(content, L"abc");
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 2u);
+  EXPECT_EQ(option.cursor_position(), 2u);
 
   input->OnEvent(Event::Backspace);
   EXPECT_EQ(content, L"ac");
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 1u);
+  EXPECT_EQ(option.cursor_position(), 1u);
 
   input->OnEvent(Event::Backspace);
   EXPECT_EQ(content, L"c");
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 0u);
+  EXPECT_EQ(option.cursor_position(), 0u);
 
   input->OnEvent(Event::Backspace);
   EXPECT_EQ(content, L"c");
-  EXPECT_EQ(InputBase::From(input)->cursor_position, 0u);
+  EXPECT_EQ(option.cursor_position(), 0u);
 }
 
 // Copyright 2021 Arthur Sonzogni. All rights reserved.

src/ftxui/component/menu.cpp

@@ -40,7 +40,7 @@ namespace ftxui {
 /// ```
 Component Menu(const std::vector<std::wstring>* entries,
                int* selected,
-               ConstRef<MenuOption> option) {
+               Ref<MenuOption> option) {
   return Make<MenuBase>(entries, selected, std::move(option));
 }
 
@@ -51,7 +51,7 @@ MenuBase* MenuBase::From(Component component) {
 
 MenuBase::MenuBase(const std::vector<std::wstring>* entries,
                    int* selected,
-                   ConstRef<MenuOption> option)
+                   Ref<MenuOption> option)
     : entries_(entries), selected_(selected), option_(option) {}
 
 Element MenuBase::Render() {

src/ftxui/component/radiobox.cpp

@@ -41,7 +41,7 @@ namespace ftxui {
 /// ```
 Component Radiobox(const std::vector<std::wstring>* entries,
                    int* selected,
-                   ConstRef<RadioboxOption> option) {
+                   Ref<RadioboxOption> option) {
   return Make<RadioboxBase>(entries, selected, std::move(option));
 }
 
@@ -52,7 +52,7 @@ RadioboxBase* RadioboxBase::From(Component component) {
 
 RadioboxBase::RadioboxBase(const std::vector<std::wstring>* entries,
                            int* selected,
-                           ConstRef<RadioboxOption> option)
+                           Ref<RadioboxOption> option)
     : entries_(entries), selected_(selected), option_(std::move(option)) {
 #if defined(FTXUI_MICROSOFT_TERMINAL_FALLBACK)
   // Microsoft terminal do not use fonts able to render properly the default

src/ftxui/component/toggle.cpp

@@ -12,7 +12,7 @@ namespace ftxui {
 
 Component Toggle(const std::vector<std::wstring>* entries,
                  int* selected,
-                 ConstRef<ToggleOption> option) {
+                 Ref<ToggleOption> option) {
   return Make<ToggleBase>(entries, selected, std::move(option));
 }
 
@@ -23,7 +23,7 @@ ToggleBase* ToggleBase::From(Component component) {
 
 ToggleBase::ToggleBase(const std::vector<std::wstring>* entries,
                        int* selected,
-                       ConstRef<ToggleOption> option)
+                       Ref<ToggleOption> option)
     : entries_(entries), selected_(selected), option_(std::move(option)) {}
 
 Element ToggleBase::Render() {