terminal/src/cascadia/TerminalApp/App.h

// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.

#pragma once

#include "Tab.h"
#include "CascadiaSettings.h"
#include "TerminalPage.h"
#include "App.g.h"
#include "App.base.h"
#include "../../cascadia/inc/cppwinrt_utils.h"

#include <winrt/Microsoft.Terminal.TerminalControl.h>
#include <winrt/Microsoft.Terminal.TerminalConnection.h>

#include <winrt/Microsoft.UI.Xaml.Controls.h>
#include <winrt/Microsoft.UI.Xaml.Controls.Primitives.h>
#include <winrt/Microsoft.UI.Xaml.XamlTypeInfo.h>

#include <winrt/Windows.ApplicationModel.DataTransfer.h>

namespace winrt::TerminalApp::implementation
{
    struct App : AppT2<App>
    {
    public:
        App();
        ~App() = default;

        void Create();
        void LoadSettings();

        Windows::Foundation::Point GetLaunchDimensions(uint32_t dpi);
        bool GetShowTabsInTitlebar();

        Windows::UI::Xaml::UIElement GetRoot() noexcept;

        hstring Title();
        void TitlebarClicked();

        // -------------------------------- WinRT Events ---------------------------------
        DECLARE_EVENT_WITH_TYPED_EVENT_HANDLER(TitleChanged, _titleChangeHandlers, winrt::Windows::Foundation::IInspectable, winrt::hstring);
        DECLARE_EVENT_WITH_TYPED_EVENT_HANDLER(LastTabClosed, _lastTabClosedHandlers, winrt::Windows::Foundation::IInspectable, winrt::TerminalApp::LastTabClosedEventArgs);
        DECLARE_EVENT_WITH_TYPED_EVENT_HANDLER(SetTitleBarContent, _setTitleBarContentHandlers, winrt::Windows::Foundation::IInspectable, winrt::Windows::UI::Xaml::UIElement);
        DECLARE_EVENT_WITH_TYPED_EVENT_HANDLER(RequestedThemeChanged, _requestedThemeChangedHandlers, TerminalApp::App, winrt::Windows::UI::Xaml::ElementTheme);

    private:
        // If you add controls here, but forget to null them either here or in
        // the ctor, you're going to have a bad time. It'll mysteriously fail to
        // activate the app.
        // ALSO: If you add any UIElements as roots here, make sure they're
        // updated in _ApplyTheme. The root currently is _root.
        winrt::com_ptr<TerminalPage> _root{ nullptr };

        std::shared_ptr<::TerminalApp::CascadiaSettings> _settings{ nullptr };

        std::shared_ptr<ScopedResourceLoader> _resourceLoader{ nullptr };

        HRESULT _settingsLoadedResult;
        winrt::hstring _settingsLoadExceptionText{};

        bool _loadedInitialSettings;

        wil::unique_folder_change_reader_nothrow _reader;

        std::shared_mutex _dialogLock;

        std::atomic<bool> _settingsReloadQueued{ false };

        fire_and_forget _ShowDialog(const winrt::Windows::Foundation::IInspectable& sender, winrt::Windows::UI::Xaml::Controls::ContentDialog dialog);
        void _ShowLoadErrorsDialog(const winrt::hstring& titleKey, const winrt::hstring& contentKey, HRESULT settingsLoadedResult);
        void _ShowLoadWarningsDialog();

        void _OnLoaded(const IInspectable& sender, const Windows::UI::Xaml::RoutedEventArgs& eventArgs);

        [[nodiscard]] HRESULT _TryLoadSettings() noexcept;
        void _LoadSettings();
        void _RegisterSettingsChange();
        fire_and_forget _DispatchReloadSettings();
        void _ReloadSettings();

        void _ApplyTheme(const Windows::UI::Xaml::ElementTheme& newTheme);

        static Windows::UI::Xaml::Controls::IconElement _GetIconFromProfile(const ::TerminalApp::Profile& profile);

        winrt::Microsoft::Terminal::TerminalControl::TermControl _GetFocusedControl();

        void _CopyToClipboardHandler(const IInspectable& sender, const winrt::Microsoft::Terminal::TerminalControl::CopyToClipboardEventArgs& copiedData);
        void _PasteFromClipboardHandler(const IInspectable& sender, const Microsoft::Terminal::TerminalControl::PasteFromClipboardEventArgs& eventArgs);

        static void _SetAcceleratorForMenuItem(Windows::UI::Xaml::Controls::MenuFlyoutItem& menuItem, const winrt::Microsoft::Terminal::Settings::KeyChord& keyChord);
    };
}

namespace winrt::TerminalApp::factory_implementation
{
    struct App : AppT<App, implementation::App>
    {
    };
}