blob: c6276b801e4fba55adf59c9b676eb3eced280035 [file] [log] [blame]
// 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 <memory>
#include <string>
#include <vector>
#include "base/callback.h"
#include "base/macros.h"
#include "base/process/process_handle.h"
namespace content {
using AccessibilityEventCallback =
base::RepeatingCallback<void(const std::string&)>;
class BrowserAccessibilityManager;
// Listens for native accessibility events fired by a given
// BrowserAccessibilityManager and saves human-readable log strings for
// each event fired to a vector. Construct an instance of this class to
// begin listening, call GetEventLogs() to get all of the logs so far, and
// destroy it to stop listening.
// A log string should be of the form "<event> on <node>" where <event> is
// the name of the event fired (platform-specific) and <node> is information
// about the accessibility node on which the event was fired, for example its
// role and name.
// The implementation is highly platform-specific; a subclass is needed for
// each platform does most of the work.
// As currently designed, there should only be one instance of this class.
class AccessibilityEventRecorder {
// Construct the right platform-specific subclass.
static std::unique_ptr<AccessibilityEventRecorder> Create(
BrowserAccessibilityManager* manager = nullptr,
base::ProcessId pid = 0,
const base::StringPiece& application_name_match_pattern =
AccessibilityEventRecorder(BrowserAccessibilityManager* manager);
virtual ~AccessibilityEventRecorder();
void set_only_web_events(bool only_web_events) {
only_web_events_ = only_web_events;
void ListenToEvents(AccessibilityEventCallback callback) {
callback_ = std::move(callback);
// Access the vector of human-readable event logs, one string per event.
const std::vector<std::string>& event_logs() { return event_logs_; }
void OnEvent(const std::string& event);
BrowserAccessibilityManager* const manager_;
bool only_web_events_ = false;
std::vector<std::string> event_logs_;
AccessibilityEventCallback callback_;
} // namespace content