From fc36ac8c1bd58c63f754956202cc52e014b11fcc Mon Sep 17 00:00:00 2001
From: Kevin Sawicki <kevinsawicki@gmail.com>
Date: Mon, 11 Jul 2016 14:04:56 -0700
Subject: [PATCH] Add API for accessibility state and changes

---
 atom/browser/api/atom_api_app.cc | 11 +++++++++++
 atom/browser/api/atom_api_app.h  |  2 ++
 atom/browser/browser.cc          |  4 ++++
 atom/browser/browser.h           |  2 ++
 atom/browser/browser_observer.h  |  3 +++
 5 files changed, 22 insertions(+)

diff --git a/atom/browser/api/atom_api_app.cc b/atom/browser/api/atom_api_app.cc
index 9d799f1..800c86e 100644
--- a/atom/browser/api/atom_api_app.cc
+++ b/atom/browser/api/atom_api_app.cc
@@ -32,6 +32,7 @@
 #include "base/strings/string_util.h"
 #include "brightray/browser/brightray_paths.h"
 #include "chrome/common/chrome_paths.h"
+#include "content/public/browser/browser_accessibility_state.h"
 #include "content/public/browser/client_certificate_delegate.h"
 #include "content/public/browser/gpu_data_manager.h"
 #include "content/public/browser/render_frame_host.h"
@@ -281,6 +282,10 @@ void App::OnFinishLaunching() {
   Emit("ready");
 }
 
+void App::OnAccessibilityChanged() {
+  Emit("accessibility-changed", IsAccessible());
+}
+
 #if defined(OS_MACOSX)
 void App::OnContinueUserActivity(
     bool* prevent_default,
@@ -486,6 +491,11 @@ void App::DisableHardwareAcceleration(mate::Arguments* args) {
   content::GpuDataManager::GetInstance()->DisableHardwareAcceleration();
 }
 
+bool App::IsAccessible() {
+  auto ax_state = content::BrowserAccessibilityState::GetInstance();
+  return ax_state->IsAccessibleBrowser();
+}
+
 #if defined(USE_NSS_CERTS)
 void App::ImportCertificate(
     const base::DictionaryValue& options,
@@ -578,6 +588,7 @@ void App::BuildPrototype(
       .SetMethod("makeSingleInstance", &App::MakeSingleInstance)
       .SetMethod("releaseSingleInstance", &App::ReleaseSingleInstance)
       .SetMethod("relaunch", &App::Relaunch)
+      .SetMethod("isAccessible", &App::IsAccessible)
       .SetMethod("disableHardwareAcceleration",
                  &App::DisableHardwareAcceleration);
 }
diff --git a/atom/browser/api/atom_api_app.h b/atom/browser/api/atom_api_app.h
index b550f0b..aa79b55 100644
--- a/atom/browser/api/atom_api_app.h
+++ b/atom/browser/api/atom_api_app.h
@@ -72,6 +72,7 @@ class App : public AtomBrowserClient::Delegate,
   void OnFinishLaunching() override;
   void OnLogin(LoginHandler* login_handler,
                const base::DictionaryValue& request_details) override;
+  void OnAccessibilityChanged() override;
 #if defined(OS_MACOSX)
   void OnContinueUserActivity(
       bool* prevent_default,
@@ -113,6 +114,7 @@ class App : public AtomBrowserClient::Delegate,
   void ReleaseSingleInstance();
   bool Relaunch(mate::Arguments* args);
   void DisableHardwareAcceleration(mate::Arguments* args);
+  bool IsAccessible();
 #if defined(USE_NSS_CERTS)
   void ImportCertificate(const base::DictionaryValue& options,
                          const net::CompletionCallback& callback);
diff --git a/atom/browser/browser.cc b/atom/browser/browser.cc
index b7d5626..2727daa 100644
--- a/atom/browser/browser.cc
+++ b/atom/browser/browser.cc
@@ -155,6 +155,10 @@ void Browser::DidFinishLaunching() {
   FOR_EACH_OBSERVER(BrowserObserver, observers_, OnFinishLaunching());
 }
 
+void Browser::OnAccessibilityChanged() {
+  FOR_EACH_OBSERVER(BrowserObserver, observers_, OnAccessibilityChanged());
+}
+
 void Browser::RequestLogin(
     LoginHandler* login_handler,
     std::unique_ptr<base::DictionaryValue> request_details) {
diff --git a/atom/browser/browser.h b/atom/browser/browser.h
index 98f561b..dbcb6b0 100644
--- a/atom/browser/browser.h
+++ b/atom/browser/browser.h
@@ -185,6 +185,8 @@ class Browser : public WindowListObserver {
   void WillFinishLaunching();
   void DidFinishLaunching();
 
+  void OnAccessibilityChanged();
+
   // Request basic auth login.
   void RequestLogin(LoginHandler* login_handler,
                     std::unique_ptr<base::DictionaryValue> request_details);
diff --git a/atom/browser/browser_observer.h b/atom/browser/browser_observer.h
index 6e85b59..5ef4ee1 100644
--- a/atom/browser/browser_observer.h
+++ b/atom/browser/browser_observer.h
@@ -52,6 +52,9 @@ class BrowserObserver {
   virtual void OnLogin(LoginHandler* login_handler,
                        const base::DictionaryValue& request_details) {}
 
+  // The browser's accessibility state has changed.
+  virtual void OnAccessibilityChanged() {};
+
 #if defined(OS_MACOSX)
   // The browser wants to resume a user activity via handoff. (macOS only)
   virtual void OnContinueUserActivity(
-- 
2.7.4