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// Copyright 2014 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/html/imports/html_import_tree_root.h"
#include "third_party/blink/renderer/core/css/style_engine.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/html/imports/html_import_child.h"
namespace blink {
HTMLImportTreeRoot* HTMLImportTreeRoot::Create(Document* document) {
return new HTMLImportTreeRoot(document);
}
HTMLImportTreeRoot::HTMLImportTreeRoot(Document* document)
: HTMLImport(HTMLImport::kSync),
document_(document),
recalc_timer_(
document->GetFrame()->GetTaskRunner(TaskType::kInternalDefault),
this,
&HTMLImportTreeRoot::RecalcTimerFired) {
ScheduleRecalcState(); // This recomputes initial state.
}
HTMLImportTreeRoot::~HTMLImportTreeRoot() = default;
void HTMLImportTreeRoot::Dispose() {
for (const auto& import_child : imports_)
import_child->Dispose();
imports_.clear();
document_ = nullptr;
recalc_timer_.Stop();
}
Document* HTMLImportTreeRoot::GetDocument() const {
return document_;
}
bool HTMLImportTreeRoot::HasFinishedLoading() const {
return !document_->Parsing() &&
document_->GetStyleEngine().HaveScriptBlockingStylesheetsLoaded();
}
void HTMLImportTreeRoot::StateWillChange() {
ScheduleRecalcState();
}
void HTMLImportTreeRoot::StateDidChange() {
HTMLImport::StateDidChange();
if (GetState().IsReady())
document_->CheckCompleted();
}
void HTMLImportTreeRoot::ScheduleRecalcState() {
DCHECK(document_);
if (recalc_timer_.IsActive() || !document_->IsActive())
return;
recalc_timer_.StartOneShot(TimeDelta(), FROM_HERE);
}
HTMLImportChild* HTMLImportTreeRoot::Add(HTMLImportChild* child) {
imports_.push_back(child);
return imports_.back().Get();
}
HTMLImportChild* HTMLImportTreeRoot::Find(const KURL& url) const {
for (const auto& candidate : imports_) {
if (EqualIgnoringFragmentIdentifier(candidate->Url(), url))
return candidate;
}
return nullptr;
}
void HTMLImportTreeRoot::RecalcTimerFired(TimerBase*) {
DCHECK(document_);
HTMLImport::RecalcTreeState(this);
}
void HTMLImportTreeRoot::Trace(blink::Visitor* visitor) {
visitor->Trace(document_);
visitor->Trace(imports_);
HTMLImport::Trace(visitor);
}
} // namespace blink
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