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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/web_test/renderer/spell_check_client.h"
#include <stddef.h>
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/task/single_thread_task_runner.h"
#include "content/web_test/renderer/web_test_grammar_checker.h"
#include "third_party/blink/public/platform/scheduler/web_agent_group_scheduler.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "third_party/blink/public/web/web_text_checking_completion.h"
#include "third_party/blink/public/web/web_text_checking_result.h"
namespace content {
SpellCheckClient::SpellCheckClient(blink::WebLocalFrame* frame)
: frame_(frame) {}
SpellCheckClient::~SpellCheckClient() {
// v8::Persistent will leak on destroy, due to the default
// NonCopyablePersistentTraits (it claims this may change in the future).
resolved_callback_.Reset();
}
void SpellCheckClient::SetEnabled(bool enabled) {
enabled_ = enabled;
}
void SpellCheckClient::Reset() {
enabled_ = false;
resolved_callback_.Reset();
}
bool SpellCheckClient::IsSpellCheckingEnabled() const {
// Ensure that the spellchecker code paths are always tested in web tests.
return true;
}
void SpellCheckClient::CheckSpelling(
const blink::WebString& text,
size_t& misspelled_offset,
size_t& misspelled_length,
std::vector<blink::WebString>* optional_suggestions) {
if (!enabled_) {
misspelled_offset = 0;
misspelled_length = 0;
return;
}
// Check the spelling of the given text.
spell_checker_.SpellCheckWord(text, &misspelled_offset, &misspelled_length);
}
void SpellCheckClient::RequestCheckingOfText(
const blink::WebString& text,
std::unique_ptr<blink::WebTextCheckingCompletion> completion) {
if (!enabled_ || text.IsEmpty()) {
if (completion) {
completion->DidCancelCheckingText();
RequestResolved();
}
return;
}
if (last_requested_text_checking_completion_) {
last_requested_text_checking_completion_->DidCancelCheckingText();
last_requested_text_checking_completion_.reset();
RequestResolved();
}
last_requested_text_checking_completion_ = std::move(completion);
last_requested_text_check_string_ = text;
if (spell_checker_.HasInCache(text)) {
FinishLastTextCheck();
} else {
frame_->GetTaskRunner(blink::TaskType::kInternalTest)
->PostTask(FROM_HERE,
base::BindOnce(&SpellCheckClient::FinishLastTextCheck,
weak_factory_.GetWeakPtr()));
}
}
void SpellCheckClient::FinishLastTextCheck() {
if (!last_requested_text_checking_completion_)
return;
std::vector<blink::WebTextCheckingResult> results;
size_t offset = 0;
if (!spell_checker_.IsMultiWordMisspelling(last_requested_text_check_string_,
&results)) {
std::u16string text = last_requested_text_check_string_.Utf16();
while (text.length()) {
size_t misspelled_position = 0;
size_t misspelled_length = 0;
spell_checker_.SpellCheckWord(blink::WebString::FromUTF16(text),
&misspelled_position, &misspelled_length);
if (!misspelled_length)
break;
std::vector<blink::WebString> suggestions;
spell_checker_.FillSuggestionList(
blink::WebString::FromUTF16(
text.substr(misspelled_position, misspelled_length)),
&suggestions);
results.push_back(blink::WebTextCheckingResult(
blink::kWebTextDecorationTypeSpelling, offset + misspelled_position,
misspelled_length, suggestions));
text = text.substr(misspelled_position + misspelled_length);
offset += misspelled_position + misspelled_length;
}
WebTestGrammarChecker::CheckGrammarOfString(
last_requested_text_check_string_, &results);
}
last_requested_text_checking_completion_->DidFinishCheckingText(results);
last_requested_text_checking_completion_.reset();
RequestResolved();
}
void SpellCheckClient::SetSpellCheckResolvedCallback(
v8::Local<v8::Function> callback) {
resolved_callback_.Reset(frame_->GetAgentGroupScheduler()->Isolate(),
callback);
}
void SpellCheckClient::RemoveSpellCheckResolvedCallback() {
resolved_callback_.Reset();
}
void SpellCheckClient::RequestResolved() {
if (resolved_callback_.IsEmpty())
return;
v8::Isolate* isolate = frame_->GetAgentGroupScheduler()->Isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = frame_->MainWorldScriptContext();
if (context.IsEmpty())
return;
v8::Context::Scope context_scope(context);
frame_->CallFunctionEvenIfScriptDisabled(
v8::Local<v8::Function>::New(isolate, resolved_callback_),
context->Global(), 0, nullptr);
}
} // namespace content
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