chrome_render_frame.mojom

// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module chrome.mojom;

import "components/prerender/common/prerender_types.mojom";
import "mojo/public/mojom/base/string16.mojom";
import "third_party/blink/public/mojom/window_features/window_features.mojom";
import "ui/gfx/geometry/mojom/geometry.mojom";
import "url/mojom/url.mojom";

enum ImageFormat {
  JPEG,
  PNG,
  // ORIGINAL means request basic image formats, JPG/PNG/GIF, if the original
  // image format is not one of them, encode the image to JPG and return.
  ORIGINAL,
};

[Native]
struct WebApplicationInfo;

// Messages sent from chrome to the render frame.
interface ChromeRenderFrame {

  // Updates the window features of the main frame's render view.
  SetWindowFeatures(blink.mojom.WindowFeatures window_features);

  // Reloads the image selected by the most recently opened context menu
  // (if there indeed is an image at that location).
  RequestReloadImageForContextNode();

  // Requests an encoded image selected by the most recently opened context
  // menu. The encoding format is specified as a parameter. If no image is
  // selected or there's an error capturing the image, |image_data| will be
  // empty. If the image area is larger than |image_min_area_pixels| it will be
  // downscaled to fit within |image_max_size_pixels|.
  // If |image_format| is ORIGINAL, return orinal image data except image
  // larger than size specified as a parameter. In that case, returns a resized
  // JPEG static image.
  RequestImageForContextNode(int32 image_min_area_pixels,
                                 gfx.mojom.Size image_max_size_pixels,
                                 ImageFormat image_format)
      => (array<uint8> image_data, gfx.mojom.Size original_size,
      string encoded_extension);

  // For WebUI testing, this message requests JavaScript to be executed at a
  // time which is late enough to not be thrown out, and early enough to be
  // before onload events are fired.
  ExecuteWebUIJavaScript(mojo_base.mojom.String16 javascript);

  // Requests the web application info from the renderer.
  GetWebApplicationInfo() => (WebApplicationInfo web_application_info);

  // Sets a header identifying the CCT session.
  [EnableIf=is_android]
  SetCCTClientHeader(string header);

  // Requests the Media Feed Url from the renderer (if the page has one).
  GetMediaFeedURL() => (url.mojom.Url? url);

  // Tells a renderer if it's currently being prerendered.  Must only be set
  // before any navigation occurs, and only set to kNoPrerender at most once
  // after that.
  SetIsPrerendering(prerender.mojom.PrerenderMode mode,
                    string histogram_prefix);
};