flutter::AccessibilityPlugin Class Reference

#include <accessibility_plugin.h>

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

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

Detailed Description

Definition at line 21 of file accessibility_plugin.h.

Constructor & Destructor Documentation

AccessibilityPlugin()

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

explicit

Definition at line 73 of file accessibility_plugin.cc.

    : engine_(engine) {}

Member Function Documentation

Announce()

void flutter::AccessibilityPlugin::Announce ( const std::string_view  message )

virtual

Definition at line 92 of file accessibility_plugin.cc.

                                                               {
  if (!engine_->semantics_enabled()) {
    return;
  }
 
  // TODO(loicsharma): Remove implicit view assumption.
  // https://github.com/flutter/flutter/issues/142845
  auto view = engine_->view(kImplicitViewId);
  if (!view) {
    return;
  }
 
  std::wstring wide_text = fml::Utf8ToWideString(message);
  view->AnnounceAlert(wide_text);
}

References flutter::kImplicitViewId, message, flutter::FlutterWindowsEngine::semantics_enabled(), and flutter::FlutterWindowsEngine::view().

SetUp()

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

static

Definition at line 76 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 flutter::StandardMessageCodec::GetInstance(), kAccessibilityChannelName, and message.

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

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