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path: root/CruUI/ui/controls/text_box.h
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#pragma once

#include "ui/control.h"
#include "timer.h"

namespace cru::ui::controls
{
    class TextBox : public Control
    {
    public:
        static TextBox* Create(
            const Microsoft::WRL::ComPtr<IDWriteTextFormat>& init_text_format = nullptr,
            const Microsoft::WRL::ComPtr<ID2D1Brush>& init_brush = nullptr)
        {
            return new TextBox(init_text_format, init_brush);
        }

    protected:
        explicit TextBox(
            const Microsoft::WRL::ComPtr<IDWriteTextFormat>& init_text_format = nullptr,
            const Microsoft::WRL::ComPtr<ID2D1Brush>& init_brush = nullptr
        );
    public:
        TextBox(const TextBox& other) = delete;
        TextBox(TextBox&& other) = delete;
        TextBox& operator=(const TextBox& other) = delete;
        TextBox& operator=(TextBox&& other) = delete;
        ~TextBox() override;

        String GetText() const
        {
            return text_;
        }

        void SetText(const String& text);

        Microsoft::WRL::ComPtr<ID2D1Brush> GetBrush() const
        {
            return brush_;
        }

        void SetBrush(const Microsoft::WRL::ComPtr<ID2D1Brush>& brush);

        Microsoft::WRL::ComPtr<IDWriteTextFormat> GetTextFormat() const
        {
            return text_format_;
        }

        void SetTextFormat(const Microsoft::WRL::ComPtr<IDWriteTextFormat>& text_format);

    protected:
        void OnSizeChangedCore(events::SizeChangedEventArgs& args) override final;
        void OnDraw(ID2D1DeviceContext* device_context) override;

        void OnMouseDownCore(events::MouseButtonEventArgs& args) override final;

        void OnGetFocusCore(events::FocusChangeEventArgs& args) override final;
        void OnLoseFocusCore(events::FocusChangeEventArgs& args) override final;

        void OnCharCore(events::CharEventArgs& args) override final;

        Size OnMeasure(const Size& available_size) override final;

    private:
        void OnTextChangedCore(const String& old_text, const String& new_text);

        void RecreateTextLayout();

    private:
        String text_;

        Microsoft::WRL::ComPtr<ID2D1Brush> brush_;
        Microsoft::WRL::ComPtr<ID2D1Brush> caret_brush_;
        //Microsoft::WRL::ComPtr<ID2D1Brush> selection_brush_;
        Microsoft::WRL::ComPtr<IDWriteTextFormat> text_format_;
        Microsoft::WRL::ComPtr<IDWriteTextLayout> text_layout_;

        unsigned position_ = 0;

        TimerTask caret_timer_;
        ActionPtr caret_action_;
        bool is_caret_show_;
    };
}