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[UWP] Implement clipboard. (flutter/engine#28064)

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This PR implements clipboard in platform handler in UWP.
This commit is contained in:
moko256 2021-09-28 09:01:42 +09:00 committed by GitHub
parent ea8305d95f
commit fecbc63bec
1 changed files with 73 additions and 6 deletions
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79
engine/src/flutter/shell/platform/windows/platform_handler_winuwp.cc
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@ -4,7 +4,14 @@
#include "flutter/shell/platform/windows/platform_handler_winuwp.h"
#include "third_party/cppwinrt/generated/winrt/Windows.ApplicationModel.DataTransfer.h"
#include "third_party/cppwinrt/generated/winrt/Windows.Foundation.h"
#include "third_party/cppwinrt/generated/winrt/Windows.UI.Core.h"
#include "flutter/shell/platform/windows/flutter_windows_view.h"
#include "flutter/shell/platform/windows/string_conversion.h"
static constexpr char kValueKey[] = "value";
namespace flutter {
@ -21,24 +28,84 @@ PlatformHandlerWinUwp::PlatformHandlerWinUwp(BinaryMessenger* messenger,
PlatformHandlerWinUwp::~PlatformHandlerWinUwp() = default;
bool isWindowInForeground() {
auto activation_mode =
winrt::Windows::UI::Core::CoreWindow::GetForCurrentThread()
.ActivationMode();
return activation_mode == winrt::Windows::UI::Core::CoreWindowActivationMode::
ActivatedInForeground;
}
void PlatformHandlerWinUwp::GetPlainText(
std::unique_ptr<MethodResult<rapidjson::Document>> result,
std::string_view key) {
// TODO: Implement. See https://github.com/flutter/flutter/issues/70214.
result->NotImplemented();
// We call `Clipboard::GetContent()` when the application window is in
// focus, otherwise calling this will throw an error.
if (!isWindowInForeground()) {
result->Error(kClipboardError,
"Unable to read clipboard. The window is not focused.");
return;
}
auto content =
winrt::Windows::ApplicationModel::DataTransfer::Clipboard::GetContent();
// Calling `DataPackageView::GetTextAsync()` when the clipboard has no text
// content will throw an error.
if (!content.Contains(winrt::Windows::ApplicationModel::DataTransfer::
StandardDataFormats::Text())) {
result->Success(rapidjson::Document());
return;
}
// Waiting `DataPackageView::GetTextAsync()` using `TResult.get()` on the
// platform thread will causes the application stop, so we continue
// response on this callback.
content.GetTextAsync().Completed(
[result = std::move(result), key](auto async_info, auto _async_status) {
auto clipboard_string = async_info.GetResults();
rapidjson::Document document;
document.SetObject();
rapidjson::Document::AllocatorType& allocator = document.GetAllocator();
document.AddMember(
rapidjson::Value(key.data(), allocator),
rapidjson::Value(Utf8FromUtf16(clipboard_string), allocator),
allocator);
result->Success(document);
});
}
void PlatformHandlerWinUwp::GetHasStrings(
std::unique_ptr<MethodResult<rapidjson::Document>> result) {
// TODO: Implement. See https://github.com/flutter/flutter/issues/70214.
result->NotImplemented();
bool has_string = false;
// We call `Clipboard::GetContent()` when the application window is in
// focus, otherwise calling this will throw an error.
if (isWindowInForeground()) {
has_string =
winrt::Windows::ApplicationModel::DataTransfer::Clipboard::GetContent()
.Contains(winrt::Windows::ApplicationModel::DataTransfer::
StandardDataFormats::Text());
}
rapidjson::Document document;
document.SetObject();
rapidjson::Document::AllocatorType& allocator = document.GetAllocator();
document.AddMember(rapidjson::Value(kValueKey, allocator),
rapidjson::Value(has_string), allocator);
result->Success(document);
}
void PlatformHandlerWinUwp::SetPlainText(
const std::string& text,
std::unique_ptr<MethodResult<rapidjson::Document>> result) {
// TODO: Implement. See https://github.com/flutter/flutter/issues/70214.
result->NotImplemented();
winrt::Windows::ApplicationModel::DataTransfer::DataPackage content;
content.SetText(Utf16FromUtf8(text));
winrt::Windows::ApplicationModel::DataTransfer::Clipboard::SetContent(
content);
result->Success();
}
} // namespace flutter