render_view_messages.h

// Copyright (c) 2012 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.

// Multiply-included file, no traditional include guard.
#include "android_webview/common/aw_hit_test_data.h"
#include "content/public/common/common_param_traits.h"
#include "ipc/ipc_channel_handle.h"
#include "ipc/ipc_message_macros.h"
#include "ipc/ipc_platform_file.h"

// Singly-included section for enums and custom IPC traits.
#ifndef ANDROID_WEBVIEW_COMMON_RENDER_VIEW_MESSAGES_H_
#define ANDROID_WEBVIEW_COMMON_RENDER_VIEW_MESSAGES_H_

namespace IPC {

// TODO - add enums and custom IPC traits here when needed.

}  // namespace IPC

#endif  // ANDROID_WEBVIEW_COMMON_RENDER_VIEW_MESSAGES_H_

IPC_STRUCT_TRAITS_BEGIN(android_webview::AwHitTestData)
  IPC_STRUCT_TRAITS_MEMBER(type)
  IPC_STRUCT_TRAITS_MEMBER(extra_data_for_type)
  IPC_STRUCT_TRAITS_MEMBER(href)
  IPC_STRUCT_TRAITS_MEMBER(anchor_text)
  IPC_STRUCT_TRAITS_MEMBER(img_src)
IPC_STRUCT_TRAITS_END()

#define IPC_MESSAGE_START AndroidWebViewMsgStart

//-----------------------------------------------------------------------------
// RenderView messages
// These are messages sent from the browser to the renderer process.

// Tells the renderer to drop all WebCore memory cache.
IPC_MESSAGE_CONTROL0(AwViewMsg_ClearCache)

// Request for the renderer to determine if the document contains any image
// elements.  The id should be passed in the response message so the response
// can be associated with the request.
IPC_MESSAGE_ROUTED1(AwViewMsg_DocumentHasImages,
                    int /* id */)

// Do hit test at the given webview coordinate. "Webview" coordinates are
// physical pixel values with the 0,0 at the top left of the current displayed
// view (ie 0,0 is not the top left of the page if the page is scrolled).
IPC_MESSAGE_ROUTED2(AwViewMsg_DoHitTest,
                    int /* view_x */,
                    int /* view_y */)

// Enables receiving pictures from the renderer on every new frame.
IPC_MESSAGE_ROUTED1(AwViewMsg_EnableCapturePictureCallback,
                    bool /* enable */)

// Requests a new picture with the latest renderer contents synchronously.
// This message blocks the browser process on the renderer until complete.
IPC_SYNC_MESSAGE_ROUTED0_0(AwViewMsg_CapturePictureSync)

// Sets the zoom level for text only. Used in layout modes other than
// Text Autosizing.
IPC_MESSAGE_ROUTED1(AwViewMsg_SetTextZoomLevel,
                    double /* zoom_level */)

// Resets WebKit WebView scrolling and scale state. We need to send this
// message whenever we want to guarantee that page's scale will be
// recalculated by WebKit.
IPC_MESSAGE_ROUTED0(AwViewMsg_ResetScrollAndScaleState)

// Set whether fixed layout mode is enabled. Must be updated together
// with WebSettings.viewport_enabled. Only WebView switches this mode
// dynamically, thus there is no support for this in the common code.
IPC_MESSAGE_ROUTED1(AwViewMsg_SetEnableFixedLayoutMode,
                    bool /* enabled */)

// Sets the initial page scale. This overrides initial scale set by
// the meta viewport tag.
IPC_MESSAGE_ROUTED1(AwViewMsg_SetInitialPageScale,
                    double /* page_scale_factor */)

//-----------------------------------------------------------------------------
// RenderView messages
// These are messages sent from the renderer to the browser process.

// Response to AwViewMsg_DocumentHasImages request.
IPC_MESSAGE_ROUTED2(AwViewHostMsg_DocumentHasImagesResponse,
                    int, /* id */
                    bool /* has_images */)

// Response to AwViewMsg_DoHitTest.
IPC_MESSAGE_ROUTED1(AwViewHostMsg_UpdateHitTestData,
                    android_webview::AwHitTestData)

// Notification that a new picture becomes available. It is only sent if
// AwViewMsg_EnableCapturePictureCallback was previously enabled.
IPC_MESSAGE_ROUTED0(AwViewHostMsg_PictureUpdated)

// Sent by the renderer when accelerated compositing is enabled, allowing the
// browser to perform synchronous input event filtering.
IPC_MESSAGE_ROUTED1(AwViewHostMsg_DidActivateAcceleratedCompositing,
                    int /* input_handler_id */)