android_webview/browser/aw_devtools_delegate.cc

   1 // Copyright 2013 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 "android_webview/browser/aw_devtools_delegate.h"
   6
   7 #include "android_webview/browser/in_process_view_renderer.h"
   8 #include "base/bind.h"
   9 #include "base/json/json_writer.h"
  10 #include "base/strings/stringprintf.h"
  11 #include "base/values.h"
  12 #include "content/public/browser/android/devtools_auth.h"
  13 #include "content/public/browser/devtools_http_handler.h"
  14 #include "content/public/browser/web_contents.h"
  15 #include "content/public/common/url_constants.h"
  16 #include "net/socket/unix_domain_socket_posix.h"
  17 #include "ui/base/resource/resource_bundle.h"
  18 #include "webkit/common/user_agent/user_agent_util.h"
  19
  20 namespace {
  21 const char kFrontEndURL[] =
  22     "http://chrome-devtools-frontend.appspot.com/serve_rev/%s/devtools.html";
  23 const char kSocketNameFormat[] = "webview_devtools_remote_%d";
  24 }
  25
  26 namespace android_webview {
  27
  28 AwDevToolsDelegate::AwDevToolsDelegate(content::BrowserContext* browser_context)
  29     : browser_context_(browser_context) {
  30   devtools_http_handler_ = content::DevToolsHttpHandler::Start(
  31       new net::UnixDomainSocketWithAbstractNamespaceFactory(
  32           base::StringPrintf(kSocketNameFormat, getpid()),
  33           "",
  34           base::Bind(&content::CanUserConnectToDevTools)),
  35       base::StringPrintf(kFrontEndURL,
  36                          webkit_glue::GetWebKitRevision().c_str()),
  37       this);
  38 }
  39
  40 AwDevToolsDelegate::~AwDevToolsDelegate() {
  41 }
  42
  43 void AwDevToolsDelegate::Stop() {
  44   devtools_http_handler_->Stop();
  45   // WARNING: |this| has now been deleted by the method above.
  46 }
  47
  48 std::string AwDevToolsDelegate::GetDiscoveryPageHTML() {
  49   // This is a temporary way of providing the list of inspectable WebViews.
  50   // Since WebView doesn't have its own resources now, it doesn't seem
  51   // reasonable to create a dedicated .pak file just for this temporary page.
  52   const char html[] =
  53       "<html>"
  54       "<head>"
  55       "<title>WebView remote debugging</title>"
  56       "<style>"
  57       "</style>"
  58       "<script>"
  59       "function onLoad() {"
  60       "  var tabs_list_request = new XMLHttpRequest();"
  61       "  tabs_list_request.open("
  62       "      'GET', '/json/list?t=' + new Date().getTime(), true);"
  63       "  tabs_list_request.onreadystatechange = onReady;"
  64       "  tabs_list_request.send();"
  65       "}"
  66       "function processItem(item) {"
  67       "  var result = JSON.parse(item.description);"
  68       "  result.debuggable = !!item.devtoolsFrontendUrl;"
  69       "  result.debugUrl = item.devtoolsFrontendUrl;"
  70       "  result.title = item.title;"
  71       "  return result;"
  72       "}"
  73       "function onReady() {"
  74       "  if(this.readyState == 4 && this.status == 200) {"
  75       "    if(this.response != null)"
  76       "      var responseJSON = JSON.parse(this.response);"
  77       "      var items = [];"
  78       "      for (var i = 0; i < responseJSON.length; ++i)"
  79       "        items.push(processItem(responseJSON[i]));"
  80       "      clear();"
  81       "      for (var i = 0; i < items.length; ++i)"
  82       "        displayView(items[i]);"
  83       "      filter();"
  84       "  }"
  85       "}"
  86       "function addColumn(row, text) {"
  87       "  var column = document.createElement('td');"
  88       "  column.innerText = text;"
  89       "  row.appendChild(column);"
  90       "}"
  91       "function cutTextIfNeeded(text, maxLen) {"
  92       "  return text.length <= maxLen ?"
  93       "      text : text.substr(0, maxLen) + '\u2026';"
  94       "}"
  95       "function displayView(item) {"
  96       "  var row = document.createElement('tr');"
  97       "  var column = document.createElement('td');"
  98       "  var frontend_ref;"
  99       "  if (item.debuggable) {"
 100       "    frontend_ref = document.createElement('a');"
 101       "    frontend_ref.href = item.debugUrl;"
 102       "    frontend_ref.title = item.title;"
 103       "    frontend_ref.target = '_blank';"
 104       "    column.appendChild(frontend_ref);"
 105       "  } else {"
 106       "    frontend_ref = column;"
 107       "  }"
 108       "  var text = document.createElement('span');"
 109       "  if (item.title) {"
 110       "    text.innerText = cutTextIfNeeded(item.title, 64);"
 111       "  } else {"
 112       "    text.innerText = '(untitled)';"
 113       "  }"
 114       "  frontend_ref.appendChild(text);"
 115       "  var bits = 0;"
 116       "  var attached = item.attached ? (bits |= 1, 'Y') : 'N';"
 117       "  var visible = item.visible ? (bits |= 2, 'Y') : 'N';"
 118       "  var empty = item.empty ? 'Y' : (bits |= 4, 'N');"
 119       "  row.setAttribute('class', bits);"
 120       "  row.appendChild(column);"
 121       "  addColumn(row, attached);"
 122       "  addColumn(row, visible);"
 123       "  addColumn(row, empty);"
 124       "  addColumn(row, item.screenX + ', ' + item.screenY);"
 125       "  addColumn(row,"
 126       "            !item.empty ? (item.width + '\u00d7' + item.height) : '');"
 127       "  document.getElementById('items').appendChild(row);"
 128       "}"
 129       "function filter() {"
 130       "  var show_attached = document.getElementById('show_attached').checked;"
 131       "  var show_visible = document.getElementById('show_visible').checked;"
 132       "  var show_nonempty = document.getElementById('show_nonempty').checked;"
 133       "  var items = document.getElementById('items').childNodes;"
 134       "  for (var i = 0; i < items.length; i++) {"
 135       "    if (items[i].nodeName == 'TR') {"
 136       "      var mask = parseInt(items[i].getAttribute('class'));"
 137       "      var show = true;"
 138       "      if (show_attached) show &= ((mask & 1) != 0);"
 139       "      if (show_visible) show &= ((mask & 2) != 0);"
 140       "      if (show_nonempty) show &= ((mask & 4) != 0);"
 141       "      if (show) {"
 142       "        items[i].style.display = 'table-row';"
 143       "      } else {"
 144       "        items[i].style.display = 'none';"
 145       "      }"
 146       "    }"
 147       "  }"
 148       "}"
 149       "var refreshInterval = 0;"
 150       "function toggleRefresh() {"
 151       "  clearInterval(refreshInterval);"
 152       "  var enabled = document.getElementById('refresh').checked;"
 153       "  if (enabled) {"
 154       "    var time = document.getElementById('refresh_time').value * 1000;"
 155       "    refreshInterval = setInterval(onLoad, time);"
 156       "  }"
 157       "}"
 158       "function clear() {"
 159       "  var items = document.getElementById('items');"
 160       "  for (var i = 0; i < items.childNodes.length; i++) {"
 161       "    items.removeChild(items.childNodes[i]);"
 162       "  }"
 163       "}"
 164       "</script>"
 165       "</head>"
 166       "<body onload='onLoad()'>"
 167       "  <div id='caption'>Inspectable WebViews</div>"
 168       "  <div><p>Only show:</p>"
 169       "    <form>"
 170       "      <input type='checkbox' id='show_attached' onclick='filter()'>"
 171       "      Attached<br/>"
 172       "      <input type='checkbox' id='show_visible' onclick='filter()'>"
 173       "      Visible<br/>"
 174       "      <input type='checkbox' id='show_nonempty' onclick='filter()'>"
 175       "      Non-empty<br/>"
 176       "      <input type='checkbox' id='refresh' onclick='toggleRefresh()'>"
 177       "      Auto refresh every "
 178       "      <input type='number' id='refresh_time' value='2' min='1' max='99'"
 179       "        onchange='toggleRefresh();' /> seconds<br/>"
 180       "    </form>"
 181       "  </div>"
 182       "  <table>"
 183       "    <tr><th style='width:200px; text-align:left;'>Title</th>"
 184       "      <th>Attached</th><th>Visible</th><th>Empty</th>"
 185       "      <th style='width:100px; text-align:left;'>Position</th>"
 186       "      <th style='width:100px; text-align:left;'>Size</th>"
 187       "    </tr>"
 188       "    <tbody id='items'></tbody>"
 189       "  </table>"
 190       "</body>"
 191       "</html>";
 192   return html;
 193 }
 194
 195 bool AwDevToolsDelegate::BundlesFrontendResources() {
 196   return false;
 197 }
 198
 199 base::FilePath AwDevToolsDelegate::GetDebugFrontendDir() {
 200   return base::FilePath();
 201 }
 202
 203 std::string AwDevToolsDelegate::GetPageThumbnailData(const GURL& url) {
 204   return "";
 205 }
 206
 207 content::RenderViewHost* AwDevToolsDelegate::CreateNewTarget() {
 208   return NULL;
 209 }
 210
 211 content::DevToolsHttpHandlerDelegate::TargetType
 212 AwDevToolsDelegate::GetTargetType(content::RenderViewHost*) {
 213   return kTargetTypeTab;
 214 }
 215
 216 std::string AwDevToolsDelegate::GetViewDescription(
 217     content::RenderViewHost* rvh) {
 218   content::WebContents* web_contents =
 219       content::WebContents::FromRenderViewHost(rvh);
 220   if (!web_contents) return "";
 221
 222   BrowserViewRenderer* bvr
 223       = InProcessViewRenderer::FromWebContents(web_contents);
 224   if (!bvr) return "";
 225   base::DictionaryValue description;
 226   description.SetBoolean("attached", bvr->IsAttachedToWindow());
 227   description.SetBoolean("visible", bvr->IsVisible());
 228   gfx::Rect screen_rect = bvr->GetScreenRect();
 229   description.SetInteger("screenX", screen_rect.x());
 230   description.SetInteger("screenY", screen_rect.y());
 231   description.SetBoolean("empty", screen_rect.size().IsEmpty());
 232   if (!screen_rect.size().IsEmpty()) {
 233     description.SetInteger("width", screen_rect.width());
 234     description.SetInteger("height", screen_rect.height());
 235   }
 236   std::string json;
 237   base::JSONWriter::Write(&description, &json);
 238   return json;
 239 }
 240
 241 scoped_refptr<net::StreamListenSocket>
 242 AwDevToolsDelegate::CreateSocketForTethering(
 243     net::StreamListenSocket::Delegate* delegate,
 244     std::string* name) {
 245   return NULL;
 246 }
 247
 248 }  // namespace android_webview