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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/renderer/actor/drag_and_release_tool.h"
#include "base/time/time.h"
#include "chrome/common/actor/action_result.h"
#include "chrome/common/actor/actor_logging.h"
#include "chrome/renderer/actor/tool_utils.h"
#include "content/public/renderer/render_frame.h"
#include "third_party/abseil-cpp/absl/strings/str_format.h"
#include "third_party/blink/public/common/input/web_coalesced_input_event.h"
#include "third_party/blink/public/common/input/web_input_event.h"
#include "third_party/blink/public/common/input/web_mouse_event.h"
#include "third_party/blink/public/platform/web_input_event_result.h"
#include "third_party/blink/public/web/web_frame_widget.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "third_party/blink/public/web/web_node.h"
#include "ui/events/base_event_utils.h"
#include "ui/gfx/geometry/point_f.h"
namespace actor {
using ::blink::WebCoalescedInputEvent;
using ::blink::WebInputEvent;
using ::blink::WebInputEventResult;
using ::blink::WebLocalFrame;
using ::blink::WebMouseEvent;
using ::blink::mojom::EventType;
DragAndReleaseTool::DragAndReleaseTool(mojom::DragAndReleaseActionPtr action,
content::RenderFrame& frame)
: frame_(frame), action_(std::move(action)) {}
DragAndReleaseTool::~DragAndReleaseTool() = default;
void DragAndReleaseTool::Execute(ToolFinishedCallback callback) {
ValidatedResult validated_result = Validate();
if (!validated_result.has_value()) {
std::move(callback).Run(std::move(validated_result.error()));
return;
}
gfx::PointF from_point = validated_result->from;
gfx::PointF to_point = validated_result->to;
// TODO(crbug.com/409333494): How should partial success be returned.
// Move and press down the mouse on the from_point.
if (!InjectMouseEvent(EventType::kMouseMove, from_point,
WebMouseEvent::Button::kNoButton)) {
std::move(callback).Run(
MakeResult(mojom::ActionResultCode::kDragAndReleaseFromMoveSuppressed));
return;
}
if (!InjectMouseEvent(EventType::kMouseDown, from_point,
WebMouseEvent::Button::kLeft)) {
std::move(callback).Run(
MakeResult(mojom::ActionResultCode::kDragAndReleaseDownSuppressed));
return;
}
// Move and release the mouse on the to_point.
if (!InjectMouseEvent(EventType::kMouseMove, to_point,
WebMouseEvent::Button::kLeft)) {
std::move(callback).Run(
MakeResult(mojom::ActionResultCode::kDragAndReleaseToMoveSuppressed));
return;
}
if (!InjectMouseEvent(EventType::kMouseUp, to_point,
WebMouseEvent::Button::kLeft)) {
std::move(callback).Run(
MakeResult(mojom::ActionResultCode::kDragAndReleaseUpSuppressed));
return;
}
std::move(callback).Run(MakeOkResult());
}
std::string DragAndReleaseTool::DebugString() const {
return absl::StrFormat("DragAndReleaseTool[from-%s -> to-%s]",
ToDebugString(action_->from_target),
ToDebugString(action_->to_target));
}
DragAndReleaseTool::ValidatedResult DragAndReleaseTool::Validate() const {
if (!frame_->GetWebFrame() || !frame_->GetWebFrame()->FrameWidget()) {
return base::unexpected(
MakeResult(mojom::ActionResultCode::kFrameWentAway));
}
mojom::ToolTargetPtr& from_target = action_->from_target;
mojom::ToolTargetPtr& to_target = action_->to_target;
if (from_target->is_dom_node_id() || to_target->is_dom_node_id()) {
return base::unexpected(
MakeResult(mojom::ActionResultCode::kArgumentsInvalid,
"DomNodeId target not supported"));
}
gfx::PointF from_point = gfx::PointF(from_target->get_coordinate());
gfx::PointF to_point = gfx::PointF(to_target->get_coordinate());
if (!IsPointWithinViewport(from_point, frame_.get())) {
return base::unexpected(
MakeResult(mojom::ActionResultCode::kDragAndReleaseFromOffscreen,
absl::StrFormat("Point [%s]", from_point.ToString())));
}
if (!IsPointWithinViewport(to_point, frame_.get())) {
return base::unexpected(
MakeResult(mojom::ActionResultCode::kDragAndReleaseToOffscreen,
absl::StrFormat("Point [%s]", to_point.ToString())));
}
return DragParams{from_point, to_point};
}
bool DragAndReleaseTool::InjectMouseEvent(WebInputEvent::Type type,
const gfx::PointF& position_in_widget,
WebMouseEvent::Button button) {
WebMouseEvent mouse_event(type, WebInputEvent::kNoModifiers,
ui::EventTimeForNow());
mouse_event.SetPositionInWidget(position_in_widget);
mouse_event.button = button;
if (type == WebInputEvent::Type::kMouseDown ||
type == WebInputEvent::Type::kMouseUp) {
mouse_event.click_count = 1;
}
WebInputEventResult result =
frame_->GetWebFrame()->FrameWidget()->HandleInputEvent(
WebCoalescedInputEvent(mouse_event, ui::LatencyInfo()));
return result != WebInputEventResult::kHandledSuppressed;
}
} // namespace actor
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