ui/base/mojom/attributed_string.mojom

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module ui.mojom;

import "mojo/public/mojom/base/string16.mojom";
import "ui/gfx/range/mojom/range.mojom";

// This will serialize the font information of a CFAttributedString so that it
// can be sent over mojo. This only stores the information of the font name and
// font size. The motive is that of security: using NSArchiver and friends to
// send objects from the renderer to the browser could lead to deserialization
// of arbitrary objects. This restricts serialization to a specific object class
// and specific attributes of that object.

// A C++ mojo-friendly representation of the font and font size attribute set.
struct FontAttribute {
  mojo_base.mojom.String16 font_name;
  float font_point_size;
  gfx.mojom.Range effective_range;
};

// A struct that contains the pertinent information from a CFAttributedString,
// which can be serialized over mojo.
struct AttributedString {
  // The plain-text string.
  mojo_base.mojom.String16 string;
  // The set of attributes that style |string|.
  array<FontAttribute> attributes;
};