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716dbf00c8
This does some long-overdue refactoring of the spaghetti code that grew in the GLFW embedding to begin providing a clearer separation between the engine and the window. It is now possible to register plugins, and run the runloop, on a headless engine, which makes headless mode much more usable. This is useful in some automated testing environments. There is more refactoring that should be done in the future, but this is a good incremental point to stop as the PR is already large, and it provides useful new functionality as-is.
96 lines
3.5 KiB
C++
96 lines
3.5 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/shell/platform/glfw/platform_handler.h"
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#include <iostream>
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#include "flutter/shell/platform/common/cpp/json_method_codec.h"
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static constexpr char kChannelName[] = "flutter/platform";
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static constexpr char kGetClipboardDataMethod[] = "Clipboard.getData";
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static constexpr char kSetClipboardDataMethod[] = "Clipboard.setData";
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static constexpr char kSystemNavigatorPopMethod[] = "SystemNavigator.pop";
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static constexpr char kTextPlainFormat[] = "text/plain";
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static constexpr char kTextKey[] = "text";
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static constexpr char kNoWindowError[] = "Missing window error";
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static constexpr char kUnknownClipboardFormatError[] =
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"Unknown clipboard format error";
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namespace flutter {
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PlatformHandler::PlatformHandler(flutter::BinaryMessenger* messenger,
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GLFWwindow* window)
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: channel_(std::make_unique<flutter::MethodChannel<rapidjson::Document>>(
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messenger,
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kChannelName,
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&flutter::JsonMethodCodec::GetInstance())),
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window_(window) {
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channel_->SetMethodCallHandler(
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[this](
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const flutter::MethodCall<rapidjson::Document>& call,
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std::unique_ptr<flutter::MethodResult<rapidjson::Document>> result) {
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HandleMethodCall(call, std::move(result));
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});
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}
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void PlatformHandler::HandleMethodCall(
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const flutter::MethodCall<rapidjson::Document>& method_call,
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std::unique_ptr<flutter::MethodResult<rapidjson::Document>> result) {
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const std::string& method = method_call.method_name();
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if (method.compare(kGetClipboardDataMethod) == 0) {
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if (!window_) {
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result->Error(kNoWindowError,
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"Clipboard is not available in GLFW headless mode.");
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return;
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}
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// Only one string argument is expected.
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const rapidjson::Value& format = method_call.arguments()[0];
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if (strcmp(format.GetString(), kTextPlainFormat) != 0) {
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result->Error(kUnknownClipboardFormatError,
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"GLFW clipboard API only supports text.");
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return;
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}
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const char* clipboardData = glfwGetClipboardString(window_);
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if (clipboardData == nullptr) {
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result->Error(kUnknownClipboardFormatError,
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"Failed to retrieve clipboard data from GLFW api.");
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return;
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}
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rapidjson::Document document;
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document.SetObject();
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rapidjson::Document::AllocatorType& allocator = document.GetAllocator();
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document.AddMember(rapidjson::Value(kTextKey, allocator),
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rapidjson::Value(clipboardData, allocator), allocator);
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result->Success(&document);
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} else if (method.compare(kSetClipboardDataMethod) == 0) {
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if (!window_) {
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result->Error(kNoWindowError,
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"Clipboard is not available in GLFW headless mode.");
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return;
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}
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const rapidjson::Value& document = *method_call.arguments();
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rapidjson::Value::ConstMemberIterator itr = document.FindMember(kTextKey);
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if (itr == document.MemberEnd()) {
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result->Error(kUnknownClipboardFormatError,
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"Missing text to store on clipboard.");
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return;
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}
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glfwSetClipboardString(window_, itr->value.GetString());
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result->Success();
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} else if (method.compare(kSystemNavigatorPopMethod) == 0) {
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exit(EXIT_SUCCESS);
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result->Success();
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} else {
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result->NotImplemented();
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}
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}
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} // namespace flutter
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