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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_AUTOFILL_IOS_FORM_UTIL_FORM_ACTIVITY_TAB_HELPER_H_
#define COMPONENTS_AUTOFILL_IOS_FORM_UTIL_FORM_ACTIVITY_TAB_HELPER_H_
#import "base/observer_list.h"
#import "base/values.h"
#import "ios/web/public/web_state_observer.h"
#import "ios/web/public/web_state_user_data.h"
namespace web {
class ScriptMessage;
class WebState;
enum class ContentWorld;
} // namespace web
namespace autofill {
class FormActivityObserver;
inline constexpr char kProgrammaticFormSubmissionHistogram[] =
"Autofill.iOS.FormSubmission.IsProgrammatic";
inline constexpr char kFormSubmissionOutcomeHistogram[] =
"Autofill.iOS.FormSubmission.OutcomeV2";
inline constexpr char kInvalidSubmittedFormReasonHistogram[] =
"Autofill.iOS.FormSubmission.Outcome.InvalidFormReason";
// Processes user activity messages for web page forms and forwards the form
// activity event to FormActivityObserver.
class FormActivityTabHelper
: public web::WebStateUserData<FormActivityTabHelper> {
public:
FormActivityTabHelper(const FormActivityTabHelper&) = delete;
FormActivityTabHelper& operator=(const FormActivityTabHelper&) = delete;
~FormActivityTabHelper() override;
static FormActivityTabHelper* GetOrCreateForWebState(
web::WebState* web_state);
// Handler for "form.*" JavaScript command. Dispatch to more specific handler.
void OnFormMessageReceived(web::WebState* web_state,
const web::ScriptMessage& message);
// Observer registration methods.
virtual void AddObserver(FormActivityObserver* observer);
virtual void RemoveObserver(FormActivityObserver* observer);
private:
friend class web::WebStateUserData<FormActivityTabHelper>;
// TestFormActivityTabHelper can be used by tests that want to simulate form
// events without loading page and executing JavaScript.
// To trigger events, TestFormActivityTabHelper will access |observer_|.
friend class TestFormActivityTabHelper;
explicit FormActivityTabHelper(web::WebState* web_state);
// Handler for form activity.
void HandleFormActivity(web::WebState* web_state,
const web::ScriptMessage& message);
// Handler for form removal.
void HandleFormRemoval(web::WebState* web_state,
const web::ScriptMessage& message);
// Handler for the submission of a form.
void FormSubmissionHandler(web::WebState* web_state,
const web::ScriptMessage& message);
// The observers.
base::ObserverList<FormActivityObserver>::Unchecked observers_;
};
} // namespace autofill
#endif // COMPONENTS_AUTOFILL_IOS_FORM_UTIL_FORM_ACTIVITY_TAB_HELPER_H_
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