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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <utility>
#include <vector>
#include "base/functional/bind.h"
#include "components/input/native_web_keyboard_event.h"
#include "components/input/web_input_event_builders_mac.h"
#include "content/app_shim_remote_cocoa/render_widget_host_ns_view_bridge.h"
#include "content/app_shim_remote_cocoa/render_widget_host_ns_view_host_helper.h"
#include "content/app_shim_remote_cocoa/web_contents_ns_view_bridge.h"
#include "content/common/render_widget_host_ns_view.mojom.h"
#include "content/common/web_contents_ns_view_bridge.mojom.h"
#include "content/public/browser/remote_cocoa.h"
#include "content/public/browser/render_widget_host_view_mac_delegate.h"
#include "mojo/public/cpp/bindings/associated_receiver.h"
#include "mojo/public/cpp/bindings/associated_remote.h"
#include "mojo/public/cpp/bindings/pending_associated_receiver.h"
#include "mojo/public/cpp/bindings/pending_associated_remote.h"
#include "mojo/public/cpp/bindings/self_owned_associated_receiver.h"
#include "third_party/blink/public/mojom/input/input_handler.mojom.h"
#include "ui/accelerated_widget_mac/window_resize_helper_mac.h"
#include "ui/base/cocoa/remote_accessibility_api.h"
#include "ui/events/cocoa/cocoa_event_utils.h"
namespace remote_cocoa {
namespace {
class RenderWidgetHostNSViewBridgeOwner
: public RenderWidgetHostNSViewHostHelper {
public:
explicit RenderWidgetHostNSViewBridgeOwner(
uint64_t view_id,
mojo::PendingAssociatedRemote<mojom::RenderWidgetHostNSViewHost> client,
mojo::PendingAssociatedReceiver<mojom::RenderWidgetHostNSView>
bridge_receiver,
remote_cocoa::RenderWidgetHostViewMacDelegateCallback
responder_delegate_creation_callback)
: host_(std::move(client),
ui::WindowResizeHelperMac::Get()->task_runner()) {
bridge_ = std::make_unique<remote_cocoa::RenderWidgetHostNSViewBridge>(
host_.get(), this, view_id,
base::BindOnce(&RenderWidgetHostNSViewBridgeOwner::OnMojoDisconnect,
base::Unretained(this)));
bridge_->BindReceiver(std::move(bridge_receiver));
host_.set_disconnect_handler(
base::BindOnce(&RenderWidgetHostNSViewBridgeOwner::OnMojoDisconnect,
base::Unretained(this)));
if (responder_delegate_creation_callback) {
[bridge_->GetNSView()
setResponderDelegate:std::move(responder_delegate_creation_callback)
.Run()];
}
}
RenderWidgetHostNSViewBridgeOwner(const RenderWidgetHostNSViewBridgeOwner&) =
delete;
RenderWidgetHostNSViewBridgeOwner& operator=(
const RenderWidgetHostNSViewBridgeOwner&) = delete;
private:
NSAccessibilityRemoteUIElement* __strong remote_accessibility_element_;
void OnMojoDisconnect() { delete this; }
std::unique_ptr<blink::WebCoalescedInputEvent> TranslateEvent(
const blink::WebInputEvent& web_event) {
return std::make_unique<blink::WebCoalescedInputEvent>(
web_event.Clone(), std::vector<std::unique_ptr<blink::WebInputEvent>>{},
std::vector<std::unique_ptr<blink::WebInputEvent>>{},
ui::LatencyInfo());
}
id GetAccessibilityElement() override {
if (!remote_accessibility_element_) {
base::ProcessId browser_pid = base::kNullProcessId;
std::vector<uint8_t> element_token;
host_->GetRenderWidgetAccessibilityToken(&browser_pid, &element_token);
[NSAccessibilityRemoteUIElement
registerRemoteUIProcessIdentifier:browser_pid];
remote_accessibility_element_ =
ui::RemoteAccessibility::GetRemoteElementFromToken(element_token);
}
return remote_accessibility_element_;
}
// RenderWidgetHostNSViewHostHelper implementation.
id GetRootBrowserAccessibilityElement() override {
// The RenderWidgetHostViewCocoa in the app shim process does not
// participate in the accessibility tree. Only the instance in the browser
// process does.
return nil;
}
id GetFocusedBrowserAccessibilityElement() override {
// Some ATs (e.g. Text To Speech) need to access the focused
// element in the app shim process. We make these apps work by
// returning the `accessibilityFocusedUIElement` of the BridgedContentView,
// which is an NSAccessibilityRemoteUIElement in app shim process.
NSView* bridgedContentView = [[bridge_->GetNSView() superview] superview];
return [bridgedContentView accessibilityFocusedUIElement];
}
void SetAccessibilityWindow(NSWindow* window) override {
host_->SetRemoteAccessibilityWindowToken(
ui::RemoteAccessibility::GetTokenForLocalElement(window));
}
void ForwardKeyboardEvent(const input::NativeWebKeyboardEvent& key_event,
const ui::LatencyInfo& latency_info) override {
ForwardKeyboardEventWithCommands(
key_event, latency_info, std::vector<blink::mojom::EditCommandPtr>());
}
void ForwardKeyboardEventWithCommands(
const input::NativeWebKeyboardEvent& key_event,
const ui::LatencyInfo& latency_info,
std::vector<blink::mojom::EditCommandPtr> edit_commands) override {
const blink::WebKeyboardEvent* web_event =
static_cast<const blink::WebKeyboardEvent*>(&key_event);
std::unique_ptr<blink::WebCoalescedInputEvent> input_event =
std::make_unique<blink::WebCoalescedInputEvent>(
web_event->Clone(),
std::vector<std::unique_ptr<blink::WebInputEvent>>{},
std::vector<std::unique_ptr<blink::WebInputEvent>>{}, latency_info);
std::vector<uint8_t> native_event_data =
ui::EventToData(key_event.os_event.Get());
host_->ForwardKeyboardEventWithCommands(
std::move(input_event), native_event_data, key_event.skip_if_unhandled,
std::move(edit_commands));
}
void RouteOrProcessMouseEvent(
const blink::WebMouseEvent& web_event) override {
host_->RouteOrProcessMouseEvent(TranslateEvent(web_event));
}
void RouteOrProcessTouchEvent(
const blink::WebTouchEvent& web_event) override {
host_->RouteOrProcessTouchEvent(TranslateEvent(web_event));
}
void RouteOrProcessWheelEvent(
const blink::WebMouseWheelEvent& web_event) override {
host_->RouteOrProcessWheelEvent(TranslateEvent(web_event));
}
void ForwardMouseEvent(const blink::WebMouseEvent& web_event) override {
host_->ForwardMouseEvent(TranslateEvent(web_event));
}
void ForwardWheelEvent(const blink::WebMouseWheelEvent& web_event) override {
host_->ForwardWheelEvent(TranslateEvent(web_event));
}
void PinchEvent(blink::WebGestureEvent pinch_event,
bool is_synthetically_injected) override {
host_->PinchEvent(TranslateEvent(pinch_event), is_synthetically_injected);
}
void SmartMagnifyEvent(const blink::WebGestureEvent& web_event) override {
host_->SmartMagnifyEvent(TranslateEvent(web_event));
}
mojo::AssociatedRemote<mojom::RenderWidgetHostNSViewHost> host_;
std::unique_ptr<RenderWidgetHostNSViewBridge> bridge_;
};
}
void CreateRenderWidgetHostNSView(
uint64_t view_id,
mojo::ScopedInterfaceEndpointHandle host_handle,
mojo::ScopedInterfaceEndpointHandle view_receiver_handle,
RenderWidgetHostViewMacDelegateCallback
responder_delegate_creation_callback) {
// Cast from the stub interface to the mojom::RenderWidgetHostNSViewHost
// and mojom::RenderWidgetHostNSView private interfaces.
// TODO(ccameron): Remove the need for this cast.
// https://crbug.com/888290
mojo::PendingAssociatedRemote<mojom::RenderWidgetHostNSViewHost> host(
std::move(host_handle), 0);
// Create a RenderWidgetHostNSViewBridgeOwner. The resulting object will be
// destroyed when its underlying pipe is closed.
std::ignore = new RenderWidgetHostNSViewBridgeOwner(
view_id, std::move(host),
mojo::PendingAssociatedReceiver<mojom::RenderWidgetHostNSView>(
std::move(view_receiver_handle)),
std::move(responder_delegate_creation_callback));
}
void CreateWebContentsNSView(
uint64_t view_id,
mojo::ScopedInterfaceEndpointHandle host_handle,
mojo::ScopedInterfaceEndpointHandle view_request_handle) {
mojo::PendingAssociatedRemote<mojom::WebContentsNSViewHost> host(
std::move(host_handle), 0);
mojo::PendingAssociatedReceiver<mojom::WebContentsNSView> ns_view_receiver(
std::move(view_request_handle));
// Note that the resulting object will be destroyed when its underlying pipe
// is closed.
(new WebContentsNSViewBridge(view_id, std::move(host)))
->Bind(std::move(ns_view_receiver),
ui::WindowResizeHelperMac::Get()->task_runner());
}
} // namespace remote_cocoa
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