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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/core/layout/ng/custom/custom_layout_constraints.h"
#include "third_party/blink/renderer/bindings/core/v8/script_value.h"
#include "third_party/blink/renderer/bindings/core/v8/serialization/serialized_script_value.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/layout/geometry/logical_size.h"
#include "third_party/blink/renderer/platform/bindings/dom_wrapper_world.h"
#include "third_party/blink/renderer/platform/bindings/script_state.h"
namespace blink {
CustomLayoutConstraints::CustomLayoutConstraints(
const LogicalSize& border_box_size,
SerializedScriptValue* data,
v8::Isolate* isolate)
: fixed_inline_size_(border_box_size.inline_size),
fixed_block_size_(border_box_size.block_size) {
if (data)
layout_worklet_world_v8_data_.Set(isolate, data->Deserialize(isolate));
}
CustomLayoutConstraints::~CustomLayoutConstraints() = default;
base::Optional<double> CustomLayoutConstraints::fixedBlockSize() const {
// Check if we've been passed an indefinite block-size.
if (fixed_block_size_ < 0.0)
return base::nullopt;
return fixed_block_size_;
}
ScriptValue CustomLayoutConstraints::data(ScriptState* script_state) const {
// "data" is *only* exposed to the LayoutWorkletGlobalScope, and we are able
// to return the same deserialized object. We don't need to check which world
// it is being accessed from.
DCHECK(ExecutionContext::From(script_state)->IsLayoutWorkletGlobalScope());
DCHECK(script_state->World().IsWorkerWorld());
if (layout_worklet_world_v8_data_.IsEmpty())
return ScriptValue::CreateNull(script_state->GetIsolate());
return ScriptValue(
script_state->GetIsolate(),
layout_worklet_world_v8_data_.NewLocal(script_state->GetIsolate()));
}
void CustomLayoutConstraints::Trace(Visitor* visitor) {
visitor->Trace(layout_worklet_world_v8_data_);
ScriptWrappable::Trace(visitor);
}
} // namespace blink
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