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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import "components/autofill/ios/browser/suggestion_controller_java_script_feature.h"
#import <Foundation/Foundation.h>
#import "base/functional/bind.h"
#import "base/no_destructor.h"
#import "base/strings/sys_string_conversions.h"
#import "base/time/time.h"
#import "base/values.h"
#import "components/autofill/ios/browser/autofill_java_script_feature.h"
#import "components/autofill/ios/common/javascript_feature_util.h"
namespace autofill {
namespace {
const char kScriptName[] = "suggestion_controller";
// The timeout for any JavaScript call in this file.
const int64_t kJavaScriptExecutionTimeoutInSeconds = 5;
void ProcessPreviousAndNextElementsPresenceResult(
base::OnceCallback<void(bool, bool)> completion_handler,
const base::Value* res) {
// The result may be invalid:
// 1) When there is an exception running the JS
// 2) There is a race when the page is changing due to which
// SuggestionControllerJavaScriptFeature has not yet injected the
// __gCrWeb.suggestion object.
// Handle this case gracefully.
if (!res || !res->is_dict() || res->GetDict().size() != 2) {
std::move(completion_handler).Run(false, false);
return;
}
const base::Value::Dict& dict = res->GetDict();
std::optional<bool> previous = dict.FindBool("previous");
std::optional<bool> next = dict.FindBool("next");
if (!previous || !next) {
std::move(completion_handler).Run(false, false);
return;
}
std::move(completion_handler).Run(previous.value(), next.value());
}
} // namespace
// static
SuggestionControllerJavaScriptFeature*
SuggestionControllerJavaScriptFeature::GetInstance() {
static base::NoDestructor<SuggestionControllerJavaScriptFeature> instance;
return instance.get();
}
SuggestionControllerJavaScriptFeature::SuggestionControllerJavaScriptFeature()
: web::JavaScriptFeature(
ContentWorldForAutofillJavascriptFeatures(),
{FeatureScript::CreateWithFilename(
kScriptName,
FeatureScript::InjectionTime::kDocumentStart,
FeatureScript::TargetFrames::kAllFrames,
FeatureScript::ReinjectionBehavior::kInjectOncePerWindow)},
{AutofillJavaScriptFeature::GetInstance()}) {}
SuggestionControllerJavaScriptFeature::
~SuggestionControllerJavaScriptFeature() = default;
void SuggestionControllerJavaScriptFeature::SelectNextElementInFrame(
web::WebFrame* frame) {
SelectNextElementInFrame(frame, "", "");
}
void SuggestionControllerJavaScriptFeature::SelectNextElementInFrame(
web::WebFrame* frame,
const std::string& form_name,
const std::string& field_name) {
CallJavaScriptFunction(
frame, "suggestion.selectNextElement",
base::Value::List().Append(form_name).Append(field_name));
}
void SuggestionControllerJavaScriptFeature::SelectPreviousElementInFrame(
web::WebFrame* frame) {
SelectPreviousElementInFrame(frame, "", "");
}
void SuggestionControllerJavaScriptFeature::SelectPreviousElementInFrame(
web::WebFrame* frame,
const std::string& form_name,
const std::string& field_name) {
CallJavaScriptFunction(
frame, "suggestion.selectPreviousElement",
base::Value::List().Append(form_name).Append(field_name));
}
void SuggestionControllerJavaScriptFeature::
FetchPreviousAndNextElementsPresenceInFrame(
web::WebFrame* frame,
base::OnceCallback<void(bool, bool)> completion_handler) {
FetchPreviousAndNextElementsPresenceInFrame(frame, "", "",
std::move(completion_handler));
}
void SuggestionControllerJavaScriptFeature::
FetchPreviousAndNextElementsPresenceInFrame(
web::WebFrame* frame,
const std::string& form_name,
const std::string& field_name,
base::OnceCallback<void(bool, bool)> completion_handler) {
DCHECK(completion_handler);
CallJavaScriptFunction(
frame, "suggestion.hasPreviousNextElements",
base::Value::List().Append(form_name).Append(field_name),
base::BindOnce(&ProcessPreviousAndNextElementsPresenceResult,
std::move(completion_handler)),
base::Seconds(kJavaScriptExecutionTimeoutInSeconds));
}
} // namespace autofill
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