From ce8b187914f599e8e579fab829671fb2f07064b7 Mon Sep 17 00:00:00 2001
From: Adam Barth <github@adambarth.com>
Date: Tue, 15 Nov 2016 13:04:08 -0800
Subject: [PATCH] Add support for raw key events on Fuchsia (#3208)

Fixes https://github.com/flutter/flutter/issues/6631
---
 content_handler/BUILD.gn          |  1 +
 content_handler/runtime_holder.cc | 32 +++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)

diff --git a/content_handler/BUILD.gn b/content_handler/BUILD.gn
index 64063828d..4b6370796 100644
--- a/content_handler/BUILD.gn
+++ b/content_handler/BUILD.gn
@@ -41,6 +41,7 @@ executable("content_handler") {
     "//lib/mtl",
     "//lib/tonic/mx",
     "//lib/zip",
+    "//third_party/rapidjson",
     "//third_party/skia",
 
     # TODO(abarth): We shouldn't need to depend on libdart_builtin but we fail
diff --git a/content_handler/runtime_holder.cc b/content_handler/runtime_holder.cc
index 0f3fdc275..ad81c8169 100644
--- a/content_handler/runtime_holder.cc
+++ b/content_handler/runtime_holder.cc
@@ -21,6 +21,9 @@
 #include "lib/ftl/time/time_delta.h"
 #include "lib/tonic/mx/mx_converter.h"
 #include "lib/zip/create_unzipper.h"
+#include "third_party/rapidjson/rapidjson/document.h"
+#include "third_party/rapidjson/rapidjson/stringbuffer.h"
+#include "third_party/rapidjson/rapidjson/writer.h"
 
 using tonic::DartConverter;
 using tonic::ToDart;
@@ -271,6 +274,35 @@ void RuntimeHolder::OnEvent(mozart::EventPtr event,
     runtime_->DispatchPointerDataPacket(packet);
 
     handled = true;
+  } else if (event->key_data) {
+    const char* type = nullptr;
+    if (event->action == mozart::EventType::KEY_PRESSED)
+      type = "keydown";
+    else if (event->action == mozart::EventType::KEY_RELEASED)
+      type = "keyup";
+
+    if (type) {
+      rapidjson::Document document;
+      auto& allocator = document.GetAllocator();
+      document.SetObject();
+      document.AddMember("type", rapidjson::Value(type, strlen(type)),
+                         allocator);
+      document.AddMember("keymap", rapidjson::Value("fuchsia"), allocator);
+      document.AddMember("hidUsage", event->key_data->hid_usage, allocator);
+      document.AddMember("codePoint", event->key_data->code_point, allocator);
+      document.AddMember("modifiers", event->key_data->modifiers, allocator);
+      rapidjson::StringBuffer buffer;
+      rapidjson::Writer<rapidjson::StringBuffer> writer(buffer);
+      document.Accept(writer);
+
+      const uint8_t* data =
+          reinterpret_cast<const uint8_t*>(buffer.GetString());
+      runtime_->DispatchPlatformMessage(
+          ftl::MakeRefCounted<blink::PlatformMessage>(
+              "flutter/keyevent",
+              std::vector<uint8_t>(data, data + buffer.GetSize()), nullptr));
+      handled = true;
+    }
   }
   callback(handled);
 }
-- 
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