Merge branch 'master' of https://github.com/crupest/CruUI

1 files changed, 0 insertions, 403 deletions

diff --git a/src/ui/controls/TextControlService.hpp b/src/ui/controls/TextControlService.hpp
deleted file mode 100644
index 5d8d4645..00000000
--- a/src/ui/controls/TextControlService.hpp
+++ /dev/null
@@ -1,403 +0,0 @@
-#pragma once
-#include "../Helper.hpp"
-#include "cru/common/Logger.hpp"
-#include "cru/common/StringUtil.hpp"
-#include "cru/platform/graph/Font.hpp"
-#include "cru/platform/graph/Painter.hpp"
-#include "cru/platform/native/InputMethod.hpp"
-#include "cru/platform/native/UiApplication.hpp"
-#include "cru/platform/native/Window.hpp"
-#include "cru/ui/Control.hpp"
-#include "cru/ui/UiEvent.hpp"
-#include "cru/ui/UiHost.hpp"
-#include "cru/ui/render/CanvasRenderObject.hpp"
-#include "cru/ui/render/ScrollRenderObject.hpp"
-#include "cru/ui/render/TextRenderObject.hpp"
-
-namespace cru::ui::controls {
-constexpr int k_default_caret_blink_duration = 500;
-
-// TControl should inherits `Control` and has following methods:
-// ```
-// gsl::not_null<render::TextRenderObject*> GetTextRenderObject();
-// render::ScrollRenderObject* GetScrollRenderObject();
-// ```
-template <typename TControl>
-class TextControlService : public Object {
-  CRU_DEFINE_CLASS_LOG_TAG(u"cru::ui::controls::TextControlService")
-
- public:
-  TextControlService(gsl::not_null<TControl*> control) : control_(control) {}
-
-  CRU_DELETE_COPY(TextControlService)
-  CRU_DELETE_MOVE(TextControlService)
-
-  ~TextControlService() override {
-    const auto application = GetUiApplication();
-    // Don't call TearDownCaret, because it use text render object of control,
-    // which may be destroyed already.
-    application->CancelTimer(this->caret_timer_id_);
-  }
-
- public:
-  bool IsEnabled() { return enable_; }
-
-  void SetEnabled(bool enable) {
-    if (enable == this->enable_) return;
-    this->enable_ = enable;
-    if (enable) {
-      this->SetupHandlers();
-      if (this->caret_visible_) {
-        this->SetupCaret();
-      }
-    } else {
-      this->AbortSelection();
-      this->event_revoker_guards_.clear();
-      this->TearDownCaret();
-    }
-  }
-
-  bool IsEditable() { return this->editable_; }
-
-  void SetEditable(bool editable) {
-    this->editable_ = editable;
-    this->input_method_context_.reset();
-  }
-
-  std::u16string GetText() { return this->text_; }
-  std::u16string_view GetTextView() { return this->text_; }
-  void SetText(std::u16string text, bool stop_composition = false) {
-    this->text_ = std::move(text);
-    if (stop_composition && this->input_method_context_) {
-      this->input_method_context_->CancelComposition();
-    }
-    CoerceSelection();
-    SyncTextRenderObject();
-  }
-
-  std::optional<platform::native::CompositionText> GetCompositionInfo() {
-    if (this->input_method_context_ == nullptr) return std::nullopt;
-    auto composition_info = this->input_method_context_->GetCompositionText();
-    if (composition_info.text.empty()) return std::nullopt;
-    return composition_info;
-  }
-
-  bool IsCaretVisible() { return caret_visible_; }
-
-  void SetCaretVisible(bool visible) {
-    if (visible == this->caret_visible_) return;
-
-    this->caret_visible_ = visible;
-
-    if (this->enable_) {
-      if (visible) {
-        this->SetupCaret();
-      } else {
-        this->TearDownCaret();
-      }
-    }
-  }
-
-  int GetCaretBlinkDuration() { return caret_blink_duration_; }
-
-  void SetCaretBlinkDuration(int milliseconds) {
-    if (this->caret_blink_duration_ == milliseconds) return;
-
-    if (this->enable_ && this->caret_visible_) {
-      this->TearDownCaret();
-      this->SetupCaret();
-    }
-  }
-
-  gsl::not_null<render::TextRenderObject*> GetTextRenderObject() {
-    return this->control_->GetTextRenderObject();
-  }
-
-  render::ScrollRenderObject* GetScrollRenderObject() {
-    return this->control_->GetScrollRenderObject();
-  }
-
-  gsl::index GetCaretPosition() { return selection_.GetEnd(); }
-
-  TextRange GetSelection() { return selection_; }
-
-  void SetSelection(gsl::index caret_position) {
-    this->SetSelection(TextRange{caret_position, 0});
-  }
-
-  void SetSelection(TextRange selection, bool scroll_to_caret = true) {
-    this->selection_ = selection;
-    CoerceSelection();
-    SyncTextRenderObject();
-    if (scroll_to_caret) {
-      if (const auto scroll_render_object = this->GetScrollRenderObject()) {
-        const auto caret_rect = this->GetTextRenderObject()->GetCaretRect();
-        // TODO: Wait a tick for layout completed.
-        this->GetScrollRenderObject()->ScrollToContain(caret_rect,
-                                                       Thickness{5.f});
-      }
-    }
-  }
-
-  void DeleteSelectedText() {
-    auto selection = GetSelection().Normalize();
-    if (selection.count == 0) return;
-    this->text_.erase(this->text_.cbegin() + selection.GetStart(),
-                      this->text_.cbegin() + selection.GetEnd());
-    SetSelection(selection.GetStart());
-  }
-
- private:
-  void CoerceSelection() {
-    this->selection_ = this->selection_.CoerceInto(0, text_.size());
-  }
-
-  void AbortSelection() {
-    if (this->select_down_button_.has_value()) {
-      this->control_->ReleaseMouse();
-      this->select_down_button_ = std::nullopt;
-    }
-    this->GetTextRenderObject()->SetSelectionRange(std::nullopt);
-  }
-
-  void SetupCaret() {
-    const auto application = GetUiApplication();
-
-    // Cancel first anyhow for safety.
-    application->CancelTimer(this->caret_timer_id_);
-
-    this->GetTextRenderObject()->SetDrawCaret(true);
-    this->caret_timer_id_ = application->SetInterval(
-        std::chrono::milliseconds(this->caret_blink_duration_),
-        [this] { this->GetTextRenderObject()->ToggleDrawCaret(); });
-  }
-
-  void TearDownCaret() {
-    const auto application = GetUiApplication();
-    application->CancelTimer(this->caret_timer_id_);
-    this->GetTextRenderObject()->SetDrawCaret(false);
-  }
-
-  void SyncTextRenderObject() {
-    const auto text_render_object = this->GetTextRenderObject();
-    const auto composition_info = this->GetCompositionInfo();
-    if (composition_info) {
-      const auto caret_position = GetCaretPosition();
-      auto text = this->text_;
-      text.insert(caret_position, composition_info->text);
-      text_render_object->SetText(text);
-      text_render_object->SetCaretPosition(
-          caret_position + composition_info->selection.GetEnd());
-      auto selection = composition_info->selection;
-      selection.position += caret_position;
-      text_render_object->SetSelectionRange(selection);
-    } else {
-      text_render_object->SetText(this->text_);
-      text_render_object->SetCaretPosition(this->GetCaretPosition());
-      text_render_object->SetSelectionRange(this->GetSelection());
-    }
-  }
-
-  template <typename TArgs>
-  void SetupOneHandler(event::RoutedEvent<TArgs>* (Control::*event)(),
-                       void (TextControlService::*handler)(
-                           typename event::RoutedEvent<TArgs>::EventArgs)) {
-    this->event_revoker_guards_.push_back(
-        EventRevokerGuard{(this->control_->*event)()->Direct()->AddHandler(
-            std::bind(handler, this, std::placeholders::_1))});
-  }
-
-  void StartSelection(Index start) {
-    SetSelection(start);
-    log::TagDebug(log_tag, u"Text selection started, position: {}.", start);
-  }
-
-  void UpdateSelection(Index new_end) {
-    auto selection = GetSelection();
-    selection.AdjustEnd(new_end);
-    this->SetSelection(selection);
-    log::TagDebug(log_tag, u"Text selection updated, range: {}, {}.",
-                  selection.GetStart(), selection.GetEnd());
-  }
-
-  void SetupHandlers() {
-    Expects(event_revoker_guards_.empty());
-
-    SetupOneHandler(&Control::MouseMoveEvent,
-                    &TextControlService::MouseMoveHandler);
-    SetupOneHandler(&Control::MouseDownEvent,
-                    &TextControlService::MouseDownHandler);
-    SetupOneHandler(&Control::MouseUpEvent,
-                    &TextControlService::MouseUpHandler);
-    SetupOneHandler(&Control::KeyDownEvent,
-                    &TextControlService::KeyDownHandler);
-    SetupOneHandler(&Control::KeyUpEvent, &TextControlService::KeyUpHandler);
-    SetupOneHandler(&Control::GainFocusEvent,
-                    &TextControlService::GainFocusHandler);
-    SetupOneHandler(&Control::LoseFocusEvent,
-                    &TextControlService::LoseFocusHandler);
-  }
-
-  void MouseMoveHandler(event::MouseEventArgs& args) {
-    if (this->select_down_button_.has_value()) {
-      const auto text_render_object = this->GetTextRenderObject();
-      const auto result = text_render_object->TextHitTest(
-          args.GetPointToContent(text_render_object));
-      const auto position = result.position + (result.trailing ? 1 : 0);
-      UpdateSelection(position);
-    }
-  }
-
-  void MouseDownHandler(event::MouseButtonEventArgs& args) {
-    this->control_->RequestFocus();
-    if (this->select_down_button_.has_value()) {
-      return;
-    } else {
-      if (!this->control_->CaptureMouse()) return;
-      if (!this->control_->RequestFocus()) return;
-      const auto text_render_object = this->GetTextRenderObject();
-      this->select_down_button_ = args.GetButton();
-      const auto result = text_render_object->TextHitTest(
-          args.GetPointToContent(text_render_object));
-      const auto position = result.position + (result.trailing ? 1 : 0);
-      StartSelection(position);
-    }
-  }
-
-  void MouseUpHandler(event::MouseButtonEventArgs& args) {
-    if (this->select_down_button_.has_value() &&
-        this->select_down_button_.value() == args.GetButton()) {
-      this->control_->ReleaseMouse();
-      this->select_down_button_ = std::nullopt;
-    }
-  }
-
-  void KeyDownHandler(event::KeyEventArgs& args) {
-    const auto key_code = args.GetKeyCode();
-    using cru::platform::native::KeyCode;
-    using cru::platform::native::KeyModifiers;
-
-    switch (key_code) {
-      case KeyCode::Backspace: {
-        if (!IsEditable()) return;
-        const auto selection = GetSelection();
-        if (selection.count == 0) {
-          const auto text = this->GetTextView();
-          const auto caret_position = GetCaretPosition();
-          if (caret_position == 0) return;
-          gsl::index new_position;
-          Utf16PreviousCodePoint(text, caret_position, &new_position);
-          text_.erase(text_.cbegin() + new_position,
-                      text_.cbegin() + caret_position);
-          SetSelection(new_position);
-        } else {
-          this->DeleteSelectedText();
-        }
-      } break;
-      case KeyCode::Delete: {
-        if (!IsEditable()) return;
-        const auto selection = GetSelection();
-        if (selection.count == 0) {
-          const auto text = this->GetTextView();
-          const auto caret_position = GetCaretPosition();
-          if (caret_position == static_cast<gsl::index>(text.size())) return;
-          gsl::index new_position;
-          Utf16NextCodePoint(text, caret_position, &new_position);
-          text_.erase(text_.cbegin() + caret_position,
-                      text_.cbegin() + new_position);
-          SyncTextRenderObject();
-        } else {
-          this->DeleteSelectedText();
-        }
-      } break;
-      case KeyCode::Left: {
-        const auto key_modifier = args.GetKeyModifier();
-        const bool shift = key_modifier & KeyModifiers::shift;
-        auto text = this->GetTextView();
-        if (shift) {
-          auto selection = this->GetSelection();
-          gsl::index new_position;
-          Utf16PreviousCodePoint(text, selection.GetEnd(), &new_position);
-          selection.AdjustEnd(new_position);
-          this->SetSelection(selection);
-        } else {
-          const auto caret = this->GetCaretPosition();
-          gsl::index new_position;
-          Utf16PreviousCodePoint(text, caret, &new_position);
-          this->SetSelection(new_position);
-        }
-      } break;
-      case KeyCode::Right: {
-        const auto key_modifier = args.GetKeyModifier();
-        const bool shift = key_modifier & KeyModifiers::shift;
-        auto text = this->GetTextView();
-        if (shift) {
-          auto selection = this->GetSelection();
-          gsl::index new_position;
-          Utf16NextCodePoint(text, selection.GetEnd(), &new_position);
-          selection.AdjustEnd(new_position);
-          this->SetSelection(selection);
-        } else {
-          const auto caret = this->GetCaretPosition();
-          gsl::index new_position;
-          Utf16NextCodePoint(text, caret, &new_position);
-          this->SetSelection(new_position);
-        }
-      } break;
-    }
-  }
-
-  void KeyUpHandler(event::KeyEventArgs& args) { CRU_UNUSED(args); }
-
-  void GainFocusHandler(event::FocusChangeEventArgs& args) {
-    CRU_UNUSED(args);
-    if (editable_) {
-      UiHost* ui_host = this->control_->GetUiHost();
-      auto window = ui_host->GetNativeWindowResolver()->Resolve();
-      if (window == nullptr) return;
-      input_method_context_ =
-          GetUiApplication()->GetInputMethodManager()->GetContext(window);
-      input_method_context_->EnableIME();
-      auto sync = [this](std::nullptr_t) { this->SyncTextRenderObject(); };
-      input_method_context_->CompositionStartEvent()->AddHandler(
-          [this](std::nullptr_t) { this->DeleteSelectedText(); });
-      input_method_context_->CompositionEvent()->AddHandler(sync);
-      input_method_context_->CompositionEndEvent()->AddHandler(sync);
-      input_method_context_->TextEvent()->AddHandler(
-          [this](const std::u16string_view& text) {
-            if (text == u"\b") return;
-            this->text_.insert(GetCaretPosition(), text);
-            this->SetSelection(GetCaretPosition() + text.size());
-          });
-    }
-  }
-
-  void LoseFocusHandler(event::FocusChangeEventArgs& args) {
-    if (!args.IsWindow()) this->AbortSelection();
-    if (input_method_context_) {
-      input_method_context_->DisableIME();
-      input_method_context_.reset();
-    }
-    SyncTextRenderObject();
-  }
-
- private:
-  gsl::not_null<TControl*> control_;
-  std::vector<EventRevokerGuard> event_revoker_guards_;
-
-  std::u16string text_;
-  TextRange selection_;
-
-  bool enable_ = false;
-  bool editable_ = false;
-
-  bool caret_visible_ = false;
-  long long caret_timer_id_ = -1;
-  int caret_blink_duration_ = k_default_caret_blink_duration;
-
-  // nullopt means not selecting
-  std::optional<MouseButton> select_down_button_;
-
-  std::unique_ptr<platform::native::IInputMethodContext> input_method_context_;
-};  // namespace cru::ui::controls
-}  // namespace cru::ui::controls