root/android_webview/native/aw_dev_tools_server.cc

DEFINITIONS

1. GetId
2. GetType
3. GetTitle
4. GetDescription
5. GetUrl
6. GetFaviconUrl
7. GetLastActivityTime
8. IsAttached
9. GetAgentHost
10. Activate
11. Close
12. BundlesFrontendResources
13. GetDebugFrontendDir
14. GetPageThumbnailData
15. CreateNewTarget
16. EnumerateTargets
17. CreateSocketForTethering
18. GetDiscoveryPageHTML
19. GetViewDescription
20. Start
21. Stop
22. IsStarted
23. RegisterAwDevToolsServer
24. InitRemoteDebugging
25. DestroyRemoteDebugging
26. SetRemoteDebuggingEnabled

// Copyright 2013 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.

#include "android_webview/native/aw_dev_tools_server.h"

#include "android_webview/native/aw_contents.h"
#include "base/bind.h"
#include "base/json/json_writer.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "content/public/browser/android/devtools_auth.h"
#include "content/public/browser/devtools_agent_host.h"
#include "content/public/browser/devtools_http_handler.h"
#include "content/public/browser/devtools_http_handler_delegate.h"
#include "content/public/browser/devtools_target.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/user_agent.h"
#include "jni/AwDevToolsServer_jni.h"
#include "net/socket/unix_domain_socket_posix.h"

using content::DevToolsAgentHost;
using content::RenderViewHost;
using content::WebContents;

namespace {

const char kFrontEndURL[] =
    "http://chrome-devtools-frontend.appspot.com/serve_rev/%s/devtools.html";
const char kSocketNameFormat[] = "webview_devtools_remote_%d";

const char kTargetTypePage[] = "page";

std::string GetViewDescription(WebContents* web_contents);

class Target : public content::DevToolsTarget {
 public:
  explicit Target(WebContents* web_contents);

  virtual std::string GetId() const OVERRIDE { return id_; }
  virtual std::string GetType() const OVERRIDE { return kTargetTypePage; }
  virtual std::string GetTitle() const OVERRIDE { return title_; }
  virtual std::string GetDescription() const OVERRIDE { return description_; }
  virtual GURL GetUrl() const OVERRIDE { return url_; }
  virtual GURL GetFaviconUrl() const OVERRIDE { return GURL(); }
  virtual base::TimeTicks GetLastActivityTime() const OVERRIDE {
    return last_activity_time_;
  }
  virtual bool IsAttached() const OVERRIDE {
    return agent_host_->IsAttached();
  }
  virtual scoped_refptr<DevToolsAgentHost> GetAgentHost() const OVERRIDE {
    return agent_host_;
  }
  virtual bool Activate() const OVERRIDE { return false; }
  virtual bool Close() const OVERRIDE { return false; }

 private:
  scoped_refptr<DevToolsAgentHost> agent_host_;
  std::string id_;
  std::string title_;
  std::string description_;
  GURL url_;
  base::TimeTicks last_activity_time_;
};

Target::Target(WebContents* web_contents) {
  agent_host_ =
      DevToolsAgentHost::GetOrCreateFor(web_contents->GetRenderViewHost());
  id_ = agent_host_->GetId();
  description_ = GetViewDescription(web_contents);
  title_ = base::UTF16ToUTF8(web_contents->GetTitle());
  url_ = web_contents->GetURL();
  last_activity_time_ = web_contents->GetLastActiveTime();
}

// Delegate implementation for the devtools http handler for WebView. A new
// instance of this gets created each time web debugging is enabled.
class AwDevToolsServerDelegate : public content::DevToolsHttpHandlerDelegate {
 public:
  AwDevToolsServerDelegate() {}
  virtual ~AwDevToolsServerDelegate() {}

  // DevToolsHttpProtocolHandler::Delegate overrides.
  virtual std::string GetDiscoveryPageHTML() OVERRIDE;

  virtual bool BundlesFrontendResources() OVERRIDE {
    return false;
  }

  virtual base::FilePath GetDebugFrontendDir() OVERRIDE {
    return base::FilePath();
  }

  virtual std::string GetPageThumbnailData(const GURL&) OVERRIDE {
    return "";
  }

  virtual scoped_ptr<content::DevToolsTarget> CreateNewTarget(
      const GURL&) OVERRIDE {
    return scoped_ptr<content::DevToolsTarget>();
  }

  virtual void EnumerateTargets(TargetCallback callback) OVERRIDE {
    TargetList targets;
    std::vector<RenderViewHost*> rvh_list =
        DevToolsAgentHost::GetValidRenderViewHosts();
    for (std::vector<RenderViewHost*>::iterator it = rvh_list.begin();
         it != rvh_list.end(); ++it) {
      WebContents* web_contents = WebContents::FromRenderViewHost(*it);
      if (web_contents)
        targets.push_back(new Target(web_contents));
    }
    callback.Run(targets);
  }

  virtual scoped_ptr<net::StreamListenSocket> CreateSocketForTethering(
      net::StreamListenSocket::Delegate* delegate,
      std::string* name) OVERRIDE {
    return scoped_ptr<net::StreamListenSocket>();
  }

 private:
  DISALLOW_COPY_AND_ASSIGN(AwDevToolsServerDelegate);
};


std::string AwDevToolsServerDelegate::GetDiscoveryPageHTML() {
  const char html[] =
      "<html>"
      "<head><title>WebView remote debugging</title></head>"
      "<body>Please use <a href=\'chrome://inspect\'>chrome://inspect</a>"
      "</body>"
      "</html>";
  return html;
}

std::string GetViewDescription(WebContents* web_contents) {
  const android_webview::BrowserViewRenderer* bvr =
      android_webview::AwContents::FromWebContents(web_contents)
          ->GetBrowserViewRenderer();
  if (!bvr) return "";
  base::DictionaryValue description;
  description.SetBoolean("attached", bvr->IsAttachedToWindow());
  description.SetBoolean("visible", bvr->IsVisible());
  gfx::Rect screen_rect = bvr->GetScreenRect();
  description.SetInteger("screenX", screen_rect.x());
  description.SetInteger("screenY", screen_rect.y());
  description.SetBoolean("empty", screen_rect.size().IsEmpty());
  if (!screen_rect.size().IsEmpty()) {
    description.SetInteger("width", screen_rect.width());
    description.SetInteger("height", screen_rect.height());
  }
  std::string json;
  base::JSONWriter::Write(&description, &json);
  return json;
}

}  // namespace

namespace android_webview {

AwDevToolsServer::AwDevToolsServer()
    : protocol_handler_(NULL) {
}

AwDevToolsServer::~AwDevToolsServer() {
  Stop();
}

void AwDevToolsServer::Start() {
  if (protocol_handler_)
    return;

  protocol_handler_ = content::DevToolsHttpHandler::Start(
      new net::UnixDomainSocketWithAbstractNamespaceFactory(
          base::StringPrintf(kSocketNameFormat, getpid()),
          "",
          base::Bind(&content::CanUserConnectToDevTools)),
      base::StringPrintf(kFrontEndURL, content::GetWebKitRevision().c_str()),
      new AwDevToolsServerDelegate());
}

void AwDevToolsServer::Stop() {
  if (!protocol_handler_)
    return;
  // Note that the call to Stop() below takes care of |protocol_handler_|
  // deletion.
  protocol_handler_->Stop();
  protocol_handler_ = NULL;
}

bool AwDevToolsServer::IsStarted() const {
  return protocol_handler_;
}

bool RegisterAwDevToolsServer(JNIEnv* env) {
  return RegisterNativesImpl(env);
}

static jlong InitRemoteDebugging(JNIEnv* env,
                                jobject obj) {
  AwDevToolsServer* server = new AwDevToolsServer();
  return reinterpret_cast<intptr_t>(server);
}

static void DestroyRemoteDebugging(JNIEnv* env, jobject obj, jlong server) {
  delete reinterpret_cast<AwDevToolsServer*>(server);
}

static void SetRemoteDebuggingEnabled(JNIEnv* env,
                                      jobject obj,
                                      jlong server,
                                      jboolean enabled) {
  AwDevToolsServer* devtools_server =
      reinterpret_cast<AwDevToolsServer*>(server);
  if (enabled) {
    devtools_server->Start();
  } else {
    devtools_server->Stop();
  }
}

}  // namespace android_webview