ash/webui/projector_app/mojom/untrusted_annotator.mojom

// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module ash.annotator.mojom;

import "ash/webui/projector_app/public/mojom/annotator_structs.mojom";

// AnnotatorPage interface implemented in the Javascript. Used by the browser
// process to send events to Javascript.
interface UntrustedAnnotatorPage {
    // Clears the annotations on the annotator canvas.
    Clear();
    // Undo the last stroke on the annotator canvas.
    Undo();
    // Redo the last stroke on the annotator canvas.
    Redo();
    // Sets the tool the user uses to annotate.
    SetTool(AnnotatorTool tool);
};

// AnnotatoPagerHandler interface implemented in C++ in the browser process.
// Used by Javascript to communicate with the browser process.
interface UntrustedAnnotatorPageHandler {
   // Notifies the browser that that undo/redo availability
   // changed for annotator.
   OnUndoRedoAvailabilityChanged(bool undo_available,
                                 bool redo_available);

  // Notifies the browser process that the annotation canvas
  // has been initialized.
  OnCanvasInitialized(bool success);
};

// Interface used to setup the communication between Javascript and C++
// in the browser process.
interface UntrustedAnnotatorPageHandlerFactory {
  // Creates the AnnotatorPageHandler in the browser process and binds it
  // to receive calls from Javascript.
  Create(pending_receiver<UntrustedAnnotatorPageHandler> handler,
         pending_remote<UntrustedAnnotatorPage> annotator);
};