terminal/src/cascadia/TerminalSettingsEditor/Utils.h
Mike Griese 29be8564f6
Manually dismiss popups when the window moves, or the SUI scrolls (#10922)
## Summary of the Pull Request

BODGY!

This solution was suggested in https://github.com/microsoft/microsoft-ui-xaml/issues/4554#issuecomment-887815332.

When the window moves, or when a ScrollViewer scrolls, dismiss any popups that are visible. This happens automagically when an app is a real XAML app, but it doesn't work for XAML Islands.

## References
* upstream at https://github.com/microsoft/microsoft-ui-xaml/issues/4554

## PR Checklist
* [x] Closes #9320
* [x] I work here
* [ ] Tests added/passed
* [ ] Requires documentation to be updated

## Detailed Description of the Pull Request / Additional comments

Unfortunately, we've got a bunch of scroll viewers in our SUI. So I did something bodgyx2 to make our life a little easier.

`DismissAllPopups` can be used to dismiss all popups for a particular UI element. However, we've got a bunch of pages with scroll viewers that may or may not have popups in them. Rather than define the same exact body for all their `ViewChanging` events, the `HasScrollViewer` struct will just do it for you!

Inside the `HasScrollViewer` stuct, we can't get at the `XamlRoot()` that our subclass implements. I mean, _we_ can, but when XAML does it's codegen, _XAML_ won't be able to figure it out.

Fortunately for us, we don't need to! The sender is a UIElement, so we can just get _their_ `XamlRoot()`.

So, you can fix this for any SUI page with just a simple 

```diff
-    <ScrollViewer>
+    <ScrollViewer ViewChanging="ViewChanging">
```

```diff
-    struct AddProfile : AddProfileT<AddProfile>
+    struct AddProfile : public HasScrollViewer<AddProfile>, AddProfileT<AddProfile>
```

## Validation Steps Performed

* the window doesn't close when you move it
* the popups _do_ close when you move the window
* the popups close when you scroll any SUI page
2021-08-16 13:41:17 +00:00

179 lines
14 KiB
C++

// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
#pragma once
#include "../inc/cppwinrt_utils.h"
// This macro must be used alongside GETSET_BINDABLE_ENUM_SETTING.
// Use this in your class's constructor after Initialize_Component().
// It sorts and initializes the observable list of enum entries with the enum name
// being its localized name, and also initializes the enum to EnumEntry
// map that's required to tell XAML what enum value the currently active
// setting has.
#define INITIALIZE_BINDABLE_ENUM_SETTING(name, enumMappingsName, enumType, resourceSectionAndType, resourceProperty) \
do \
{ \
std::vector<winrt::Microsoft::Terminal::Settings::Editor::EnumEntry> name##List; \
_##name##Map = winrt::single_threaded_map<enumType, winrt::Microsoft::Terminal::Settings::Editor::EnumEntry>(); \
auto enumMapping##name = winrt::Microsoft::Terminal::Settings::Model::EnumMappings::enumMappingsName(); \
for (auto [key, value] : enumMapping##name) \
{ \
auto enumName = LocalizedNameForEnumName(resourceSectionAndType, key, resourceProperty); \
auto entry = winrt::make<winrt::Microsoft::Terminal::Settings::Editor::implementation::EnumEntry>(enumName, winrt::box_value<enumType>(value)); \
name##List.emplace_back(entry); \
_##name##Map.Insert(value, entry); \
} \
std::sort(name##List.begin(), name##List.end(), EnumEntryComparator<enumType>()); \
_##name##List = winrt::single_threaded_observable_vector<winrt::Microsoft::Terminal::Settings::Editor::EnumEntry>(std::move(name##List)); \
} while (0);
#define INITIALIZE_BINDABLE_ENUM_SETTING_REVERSE_ORDER(name, enumMappingsName, enumType, resourceSectionAndType, resourceProperty) \
do \
{ \
std::vector<winrt::Microsoft::Terminal::Settings::Editor::EnumEntry> name##List; \
_##name##Map = winrt::single_threaded_map<enumType, winrt::Microsoft::Terminal::Settings::Editor::EnumEntry>(); \
auto enumMapping##name = winrt::Microsoft::Terminal::Settings::Model::EnumMappings::enumMappingsName(); \
for (auto [key, value] : enumMapping##name) \
{ \
auto enumName = LocalizedNameForEnumName(resourceSectionAndType, key, resourceProperty); \
auto entry = winrt::make<winrt::Microsoft::Terminal::Settings::Editor::implementation::EnumEntry>(enumName, winrt::box_value<enumType>(value)); \
name##List.emplace_back(entry); \
_##name##Map.Insert(value, entry); \
} \
std::sort(name##List.begin(), name##List.end(), EnumEntryReverseComparator<enumType>()); \
_##name##List = winrt::single_threaded_observable_vector<winrt::Microsoft::Terminal::Settings::Editor::EnumEntry>(std::move(name##List)); \
} while (0);
// This macro must be used alongside INITIALIZE_BINDABLE_ENUM_SETTING.
// It declares the needed data structures, getters, and setters to make
// the given enum type bindable to XAML. It provides an observable list
// of EnumEntries so that we may display all possible values of the given
// enum type and its localized names. It also provides a getter and setter
// for the setting we wish to bind to.
#define GETSET_BINDABLE_ENUM_SETTING(name, enumType, settingsModelName, settingNameInModel) \
public: \
winrt::Windows::Foundation::Collections::IObservableVector<winrt::Microsoft::Terminal::Settings::Editor::EnumEntry> name##List() \
{ \
return _##name##List; \
} \
\
winrt::Windows::Foundation::IInspectable Current##name() \
{ \
return winrt::box_value<winrt::Microsoft::Terminal::Settings::Editor::EnumEntry>(_##name##Map.Lookup(settingsModelName().settingNameInModel())); \
} \
\
void Current##name(const winrt::Windows::Foundation::IInspectable& enumEntry) \
{ \
if (auto ee = enumEntry.try_as<winrt::Microsoft::Terminal::Settings::Editor::EnumEntry>()) \
{ \
auto setting = winrt::unbox_value<enumType>(ee.EnumValue()); \
settingsModelName().settingNameInModel(setting); \
} \
} \
\
private: \
winrt::Windows::Foundation::Collections::IObservableVector<winrt::Microsoft::Terminal::Settings::Editor::EnumEntry> _##name##List; \
winrt::Windows::Foundation::Collections::IMap<enumType, winrt::Microsoft::Terminal::Settings::Editor::EnumEntry> _##name##Map;
// This macro defines a dependency property for a WinRT class.
// Use this in your class' header file after declaring it in the idl.
// Remember to register your dependency property in the respective cpp file.
#define DEPENDENCY_PROPERTY(type, name) \
public: \
static winrt::Windows::UI::Xaml::DependencyProperty name##Property() \
{ \
return _##name##Property; \
} \
type name() const \
{ \
return winrt::unbox_value<type>(GetValue(_##name##Property)); \
} \
void name(type const& value) \
{ \
SetValue(_##name##Property, winrt::box_value(value)); \
} \
\
private: \
static winrt::Windows::UI::Xaml::DependencyProperty _##name##Property;
// Function Description:
// - This function presents a File Open "common dialog" and returns its selected file asynchronously.
// Parameters:
// - customize: A lambda that receives an IFileDialog* to customize.
// Return value:
// (async) path to the selected item.
template<typename TLambda>
winrt::Windows::Foundation::IAsyncOperation<winrt::hstring> OpenFilePicker(HWND parentHwnd, TLambda&& customize)
{
auto fileDialog{ winrt::create_instance<IFileDialog>(CLSID_FileOpenDialog) };
DWORD flags{};
THROW_IF_FAILED(fileDialog->GetOptions(&flags));
THROW_IF_FAILED(fileDialog->SetOptions(flags | FOS_FORCEFILESYSTEM | FOS_NOCHANGEDIR | FOS_DONTADDTORECENT)); // filesystem objects only; no recent places
customize(fileDialog.get());
auto hr{ fileDialog->Show(parentHwnd) };
if (!SUCCEEDED(hr))
{
if (hr == HRESULT_FROM_WIN32(ERROR_CANCELLED))
{
co_return winrt::hstring{};
}
THROW_HR(hr);
}
winrt::com_ptr<IShellItem> result;
THROW_IF_FAILED(fileDialog->GetResult(result.put()));
wil::unique_cotaskmem_string filePath;
THROW_IF_FAILED(result->GetDisplayName(SIGDN_FILESYSPATH, &filePath));
co_return winrt::hstring{ filePath.get() };
}
winrt::Windows::Foundation::IAsyncOperation<winrt::hstring> OpenImagePicker(HWND parentHwnd);
namespace winrt::Microsoft::Terminal::Settings
{
winrt::hstring GetSelectedItemTag(winrt::Windows::Foundation::IInspectable const& comboBoxAsInspectable);
winrt::hstring LocalizedNameForEnumName(const std::wstring_view sectionAndType, const std::wstring_view enumValue, const std::wstring_view propertyType);
}
// BODGY!
//
// The following function and struct are a workaround for GH#9320.
//
// DismissAllPopups can be used to dismiss all popups for a particular UI
// element. However, we've got a bunch of pages with scroll viewers that may or
// may not have popups in them. Rather than define the same exact body for all
// their ViewChanging events, the HasScrollViewer struct will just do it for
// you!
inline void DismissAllPopups(winrt::Windows::UI::Xaml::XamlRoot const& xamlRoot)
{
const auto popups{ winrt::Windows::UI::Xaml::Media::VisualTreeHelper::GetOpenPopupsForXamlRoot(xamlRoot) };
for (const auto& p : popups)
{
p.IsOpen(false);
}
}
template<typename T>
struct HasScrollViewer
{
// When the ScrollViewer scrolls, dismiss any popups we might have.
void ViewChanging(winrt::Windows::Foundation::IInspectable const& sender,
const winrt::Windows::UI::Xaml::Controls::ScrollViewerViewChangingEventArgs& /*e*/)
{
// Inside this struct, we can't get at the XamlRoot() that our subclass
// implements. I mean, _we_ can, but when XAML does it's code
// generation, _XAML_ won't be able to figure it out.
//
// Fortunately for us, we don't need to! The sender is a UIElement, so
// we can just get _their_ XamlRoot().
if (const auto& uielem{ sender.try_as<winrt::Windows::UI::Xaml::UIElement>() })
{
DismissAllPopups(uielem.XamlRoot());
}
}
};