content/common/devtools_messages.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // Developer tools consist of the following parts:
   6 //
   7 // DevToolsAgent lives in the renderer of an inspected page and provides access
   8 // to the pages resources, DOM, v8 etc. by means of IPC messages.
   9 //
  10 // DevToolsClient is a thin delegate that lives in the tools front-end
  11 // renderer and converts IPC messages to frontend method calls and allows the
  12 // frontend to send messages to the DevToolsAgent.
  13 //
  14 // All the messages are routed through browser process. There is a
  15 // DevToolsManager living in the browser process that is responsible for
  16 // routing logistics. It is also capable of sending direct messages to the
  17 // agent rather than forwarding messages between agents and clients only.
  18 //
  19 // Chain of communication between the components may be described by the
  20 // following diagram:
  21 //  ----------------------------
  22 // | (tools frontend            |
  23 // | renderer process)          |
  24 // |                            |            --------------------
  25 // |tools    <--> DevToolsClient+<-- IPC -->+ (browser process)  |
  26 // |frontend                    |           |                    |
  27 //  ----------------------------             ---------+----------
  28 //                                                    ^
  29 //                                                    |
  30 //                                                   IPC
  31 //                                                    |
  32 //                                                    v
  33 //                          --------------------------+--------
  34 //                         | inspected page <--> DevToolsAgent |
  35 //                         |                                   |
  36 //                         | (inspected page renderer process) |
  37 //                          -----------------------------------
  38 //
  39 // This file describes developer tools message types.
  40
  41 // Multiply-included message file, no standard include guard.
  42 #include <map>
  43 #include <string>
  44
  45 #include "content/common/content_export.h"
  46 #include "content/public/common/common_param_traits.h"
  47 #include "content/public/common/console_message_level.h"
  48 #include "ipc/ipc_message_macros.h"
  49
  50 #undef IPC_MESSAGE_EXPORT
  51 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
  52
  53 #define IPC_MESSAGE_START DevToolsMsgStart
  54
  55 // These are messages sent from DevToolsAgent to DevToolsClient through the
  56 // browser.
  57
  58 // Agent -> Client message chunk.
  59 //   |is_first| marks the first chunk, comes with the |message_size| for
  60 //   total message size.
  61 //   |is_last| marks the last chunk. |call_id| and |post_state| are optional
  62 //    parameters passed with the last chunk of the protocol response.
  63 IPC_STRUCT_BEGIN(DevToolsMessageChunk)
  64   IPC_STRUCT_MEMBER(bool, is_first)
  65   IPC_STRUCT_MEMBER(bool, is_last)
  66   IPC_STRUCT_MEMBER(int, message_size)
  67   IPC_STRUCT_MEMBER(int, call_id)
  68   IPC_STRUCT_MEMBER(std::string, data)
  69   IPC_STRUCT_MEMBER(std::string, post_state)
  70 IPC_STRUCT_END()
  71
  72 // Sends response from the agent to the client. Supports chunked encoding.
  73 IPC_MESSAGE_ROUTED1(DevToolsClientMsg_DispatchOnInspectorFrontend,
  74                     DevToolsMessageChunk /* message */)
  75
  76 //-----------------------------------------------------------------------------
  77 // These are messages sent from DevToolsClient to DevToolsAgent through the
  78 // browser.
  79 // Tells agent that there is a client host connected to it.
  80 IPC_MESSAGE_ROUTED1(DevToolsAgentMsg_Attach,
  81                     std::string /* host_id */)
  82
  83 // Tells agent that a client host was disconnected from another agent and
  84 // connected to this one.
  85 IPC_MESSAGE_ROUTED2(DevToolsAgentMsg_Reattach,
  86                     std::string /* host_id */,
  87                     std::string /* agent_state */)
  88
  89 // Tells agent that there is no longer a client host connected to it.
  90 IPC_MESSAGE_ROUTED0(DevToolsAgentMsg_Detach)
  91
  92 // WebKit-level transport.
  93 IPC_MESSAGE_ROUTED1(DevToolsAgentMsg_DispatchOnInspectorBackend,
  94                     std::string /* message */)
  95
  96 // Inspect element with the given coordinates.
  97 IPC_MESSAGE_ROUTED3(DevToolsAgentMsg_InspectElement,
  98                     std::string /* host_id */,
  99                     int /* x */,
 100                     int /* y */)
 101
 102 //-----------------------------------------------------------------------------
 103 // These are messages sent from the browser to the renderer.
 104
 105 // RenderViewHostDelegate::RenderViewCreated method sends this message to a
 106 // new renderer to notify it that it will host developer tools UI and should
 107 // set up all neccessary bindings and create DevToolsClient instance that
 108 // will handle communication with inspected page DevToolsAgent.
 109 IPC_MESSAGE_ROUTED1(DevToolsMsg_SetupDevToolsClient,
 110                     std::string /* compatibility script */)
 111
 112
 113 //-----------------------------------------------------------------------------
 114 // These are messages sent from the renderer to the browser.
 115
 116 // Transport from Inspector frontend to frontend host.
 117 IPC_MESSAGE_ROUTED1(DevToolsHostMsg_DispatchOnEmbedder,
 118                     std::string /* message */)