flutter::AccessibilityPlugin Class Reference

#include <accessibility_plugin.h>

Public Member Functions
	AccessibilityPlugin (FlutterWindowsEngine *engine)
virtual void	Announce (const FlutterViewId view_id, const std::string_view message)

Static Public Member Functions
static void	SetUp (BinaryMessenger *binary_messenger, AccessibilityPlugin *plugin)

Detailed Description

Definition at line 22 of file accessibility_plugin.h.

Constructor & Destructor Documentation

AccessibilityPlugin()

flutter::AccessibilityPlugin::AccessibilityPlugin ( FlutterWindowsEngine *  engine )

explicit

Definition at line 87 of file accessibility_plugin.cc.

    : engine_(engine) {}

Member Function Documentation

Announce()

void flutter::AccessibilityPlugin::Announce ( const FlutterViewId  view_id, const std::string_view  message  )

virtual

Definition at line 106 of file accessibility_plugin.cc.

                                                                 {
  if (!engine_->semantics_enabled()) {
    return;
  }
 
  auto view = engine_->view(view_id);
  if (!view) {
    return;
  }
 
  std::wstring wide_text = fml::Utf8ToWideString(message);
  view->AnnounceAlert(wide_text);
}

References message, flutter::FlutterWindowsEngine::semantics_enabled(), fml::Utf8ToWideString(), view, flutter::FlutterWindowsEngine::view(), and view_id.

SetUp()

void flutter::AccessibilityPlugin::SetUp ( BinaryMessenger *  binary_messenger, AccessibilityPlugin *  plugin  )

static

Definition at line 90 of file accessibility_plugin.cc.

                                                             {
  BasicMessageChannel<> channel{binary_messenger, kAccessibilityChannelName,
                                &StandardMessageCodec::GetInstance()};
 
  channel.SetMessageHandler(
      [plugin](const EncodableValue& message,
               const MessageReply<EncodableValue>& reply) {
        HandleMessage(plugin, message);
 
        // The accessibility channel does not support error handling.
        // Always return an empty response even on failure.
        reply(EncodableValue{std::monostate{}});
      });
}

References channel, flutter::StandardMessageCodec::GetInstance(), kAccessibilityChannelName, and message.

---

The documentation for this class was generated from the following files:

• shell/platform/windows/accessibility_plugin.h
• shell/platform/windows/accessibility_plugin.cc