1// Copyright (c) 2011 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#include "chrome/browser/ui/webui/devtools_ui.h"
6
7#include "base/string_util.h"
8#include "chrome/browser/net/chrome_url_request_context.h"
9#include "chrome/browser/profiles/profile.h"
10#include "chrome/browser/ui/webui/chrome_url_data_manager_backend.h"
11#include "chrome/common/devtools_messages.h"
12#include "chrome/common/url_constants.h"
13#include "content/browser/browser_thread.h"
14#include "content/browser/renderer_host/render_view_host.h"
15#include "content/browser/tab_contents/tab_contents.h"
16#include "grit/devtools_resources_map.h"
17#include "ui/base/resource/resource_bundle.h"
18
19namespace {
20
21std::string PathWithoutParams(const std::string& path) {
22  return GURL(std::string("chrome-devtools://devtools/") + path)
23      .path().substr(1);
24}
25
26}
27
28class DevToolsDataSource : public ChromeURLDataManager::DataSource {
29 public:
30  DevToolsDataSource();
31
32  virtual void StartDataRequest(const std::string& path,
33                                bool is_incognito,
34                                int request_id);
35  virtual std::string GetMimeType(const std::string& path) const;
36
37 private:
38  ~DevToolsDataSource() {}
39  DISALLOW_COPY_AND_ASSIGN(DevToolsDataSource);
40};
41
42
43DevToolsDataSource::DevToolsDataSource()
44    : DataSource(chrome::kChromeUIDevToolsHost, NULL) {
45}
46
47void DevToolsDataSource::StartDataRequest(const std::string& path,
48                                          bool is_incognito,
49                                          int request_id) {
50  std::string filename = PathWithoutParams(path);
51
52  int resource_id = -1;
53  for (size_t i = 0; i < kDevtoolsResourcesSize; ++i) {
54    if (filename == kDevtoolsResources[i].name) {
55      resource_id = kDevtoolsResources[i].value;
56      break;
57    }
58  }
59
60  DLOG_IF(WARNING, -1 == resource_id) << "Unable to find dev tool resource: "
61      << filename << ". If you compiled with debug_devtools=1, try running"
62      " with --debug-devtools.";
63  const ResourceBundle& rb = ResourceBundle::GetSharedInstance();
64  scoped_refptr<RefCountedStaticMemory> bytes(rb.LoadDataResourceBytes(
65      resource_id));
66  SendResponse(request_id, bytes);
67}
68
69std::string DevToolsDataSource::GetMimeType(const std::string& path) const {
70  std::string filename = PathWithoutParams(path);
71  if (EndsWith(filename, ".html", false)) {
72    return "text/html";
73  } else if (EndsWith(filename, ".css", false)) {
74    return "text/css";
75  } else if (EndsWith(filename, ".js", false)) {
76    return "application/javascript";
77  } else if (EndsWith(filename, ".png", false)) {
78    return "image/png";
79  } else if (EndsWith(filename, ".gif", false)) {
80    return "image/gif";
81  }
82  NOTREACHED();
83  return "text/plain";
84}
85
86// static
87void DevToolsUI::RegisterDevToolsDataSource() {
88  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
89  static bool registered = false;
90  if (!registered) {
91    DevToolsDataSource* data_source = new DevToolsDataSource();
92    ChromeURLRequestContext* context = static_cast<ChromeURLRequestContext*>(
93        Profile::GetDefaultRequestContext()->GetURLRequestContext());
94    context->GetChromeURLDataManagerBackend()->AddDataSource(data_source);
95    registered = true;
96  }
97}
98
99DevToolsUI::DevToolsUI(TabContents* contents) : WebUI(contents) {
100  DevToolsDataSource* data_source = new DevToolsDataSource();
101  contents->profile()->GetChromeURLDataManager()->AddDataSource(data_source);
102}
103
104void DevToolsUI::RenderViewCreated(RenderViewHost* render_view_host) {
105  render_view_host->Send(new DevToolsMsg_SetupDevToolsClient(
106      render_view_host->routing_id()));
107}
108