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#pragma once
#include "../base.hpp"
#include "cru/ui/ui_event.hpp"
#include <functional>
#include <optional>
namespace cru::platform::graph {
struct IBrush;
}
namespace cru::ui::render {
class TextRenderObject;
class CanvasRenderObject;
} // namespace cru::ui::render
namespace cru::ui::controls {
struct ITextControl : virtual Interface {
virtual render::TextRenderObject* GetTextRenderObject() = 0;
virtual render::CanvasRenderObject* GetCaretRenderObject() = 0;
virtual platform::graph::IBrush* GetCaretBrush() = 0;
};
class TextControlService : public Object {
public:
TextControlService(Control* control, ITextControl* text_control);
CRU_DELETE_COPY(TextControlService)
CRU_DELETE_MOVE(TextControlService)
~TextControlService();
public:
bool IsEnabled() { return enable_; }
void SetEnabled(bool enable);
int GetCaretPosition() { return caret_position_; }
void SetCaretPosition(int position) { caret_position_ = position; }
bool IsCaretVisible() { return caret_visible_; }
void SetCaretVisible(bool visible);
// please set correct offset before calling this
void DrawCaret(platform::graph::IPainter* painter);
private:
void AbortSelection();
void SetupCaretTimer();
void TearDownCaretTimer();
void SetupHandlers();
void MouseMoveHandler(event::MouseEventArgs& args);
void MouseDownHandler(event::MouseButtonEventArgs& args);
void MouseUpHandler(event::MouseButtonEventArgs& args);
void LoseFocusHandler(event::FocusChangeEventArgs& args);
private:
Control* control_;
ITextControl* text_control_;
std::vector<EventRevokerGuard> event_revoker_guards_;
bool enable_ = false;
bool caret_visible_ = false;
int caret_position_ = 0;
#ifdef CRU_DEBUG
bool caret_timer_set_ = false;
#endif
unsigned long caret_timer_tag_;
// this is used for blinking of caret
bool caret_show_ = true;
// nullopt means not selecting
std::optional<MouseButton> select_down_button_;
// before the char
int select_start_position_;
};
} // namespace cru::ui::controls
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