Cleanup: Remove about:network....

chrome/browser/views/about_network_dialog.cc

-// Copyright (c) 2010 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 "chrome/browser/views/about_network_dialog.h"
-
-#include "base/message_loop.h"
-#include "base/thread.h"
-#include "base/utf_string_conversions.h"
-#include "chrome/browser/chrome_thread.h"
-#include "net/url_request/url_request.h"
-#include "net/url_request/url_request_job.h"
-#include "net/url_request/url_request_job_tracker.h"
-#include "views/grid_layout.h"
-#include "views/controls/button/text_button.h"
-#include "views/controls/textfield/textfield.h"
-#include "views/standard_layout.h"
-#include "views/window/window.h"
-
-namespace {
-
-// We don't localize this UI since this is a developer-only feature.
-const wchar_t kStartTrackingLabel[] = L"Start tracking";
-const wchar_t kStopTrackingLabel[] = L"Stop tracking";
-const wchar_t kShowCurrentLabel[] = L"Show Current";
-const wchar_t kClearLabel[] = L"Clear";
-
-// The singleton dialog box. This is non-NULL when a dialog is active so we
-// know not to create a new one.
-AboutNetworkDialog* active_dialog = NULL;
-
-// Returns a string representing the URL, handling the case where the spec
-// is invalid.
-std::wstring StringForURL(const GURL& url) {
-  if (url.is_valid())
-    return UTF8ToWide(url.spec());
-  return UTF8ToWide(url.possibly_invalid_spec()) + L" (invalid)";
-}
-
-std::wstring URLForJob(URLRequestJob* job) {
-  URLRequest* request = job->request();
-  if (request)
-    return StringForURL(request->url());
-  return std::wstring(L"(orphaned)");
-}
-
-// JobTracker ------------------------------------------------------------------
-
-// A JobTracker is allocated to monitor network jobs running on the IO
-// thread.  This allows the NetworkStatusView to remain single-threaded.
-class JobTracker : public URLRequestJobTracker::JobObserver,
-                   public base::RefCountedThreadSafe<JobTracker> {
- public:
-  explicit JobTracker(AboutNetworkDialog* view);
-
-  // Called by the NetworkStatusView on the main application thread.
-  void StartTracking();
-  void StopTracking();
-  void ReportStatus();
-
-  // URLRequestJobTracker::JobObserver methods (called on the IO thread):
-  virtual void OnJobAdded(URLRequestJob* job);
-  virtual void OnJobRemoved(URLRequestJob* job);
-  virtual void OnJobDone(URLRequestJob* job, const URLRequestStatus& status);
-  virtual void OnJobRedirect(URLRequestJob* job, const GURL& location,
-                             int status_code);
-  virtual void OnBytesRead(URLRequestJob* job, int byte_count);
-
-  // The JobTracker may be deleted after NetworkStatusView is deleted.
-  void DetachView() { view_ = NULL; }
-
- private:
-  friend class base::RefCountedThreadSafe<JobTracker>;
-
-  ~JobTracker();
-
-  void InvokeOnIOThread(void (JobTracker::*method)());
-
-  // Called on the IO thread
-  void OnStartTracking();
-  void OnStopTracking();
-  void OnReportStatus();
-  void AppendText(const std::wstring& text);
-
-  // Called on the main thread
-  void OnAppendText(const std::wstring& text);
-
-  AboutNetworkDialog* view_;
-  MessageLoop* view_message_loop_;
-};
-
-// main thread:
-JobTracker::JobTracker(AboutNetworkDialog* view)
-    : view_(view),
-      view_message_loop_(MessageLoop::current()) {
-}
-
-JobTracker::~JobTracker() {
-}
-
-// main thread:
-void JobTracker::InvokeOnIOThread(void (JobTracker::*m)()) {
-  ChromeThread::PostTask(
-      ChromeThread::IO, FROM_HERE, NewRunnableMethod(this, m));
-}
-
-// main thread:
-void JobTracker::StartTracking() {
-  DCHECK(MessageLoop::current() == view_message_loop_);
-  DCHECK(view_);
-  InvokeOnIOThread(&JobTracker::OnStartTracking);
-}
-
-// main thread:
-void JobTracker::StopTracking() {
-  DCHECK(MessageLoop::current() == view_message_loop_);
-  // The tracker should not be deleted before it is removed from observer
-  // list.
-  AddRef();
-  InvokeOnIOThread(&JobTracker::OnStopTracking);
-}
-
-// main thread:
-void JobTracker::ReportStatus() {
-  DCHECK(MessageLoop::current() == view_message_loop_);
-  InvokeOnIOThread(&JobTracker::OnReportStatus);
-}
-
-// main thread:
-void JobTracker::OnAppendText(const std::wstring& text) {
-  DCHECK(MessageLoop::current() == view_message_loop_);
-  if (view_ && view_->tracking())
-    view_->AppendText(text);
-}
-
-// IO thread:
-void JobTracker::AppendText(const std::wstring& text) {
-  DCHECK(MessageLoop::current() != view_message_loop_);
-  view_message_loop_->PostTask(FROM_HERE, NewRunnableMethod(
-      this, &JobTracker::OnAppendText, text));
-}
-
-// IO thread:
-void JobTracker::OnStartTracking() {
-  DCHECK(MessageLoop::current() != view_message_loop_);
-  g_url_request_job_tracker.AddObserver(this);
-}
-
-// IO thread:
-void JobTracker::OnStopTracking() {
-  DCHECK(MessageLoop::current() != view_message_loop_);
-  g_url_request_job_tracker.RemoveObserver(this);
-  // Balance the AddRef() in StopTracking() called in main thread.
-  Release();
-}
-
-// IO thread:
-void JobTracker::OnReportStatus() {
-  DCHECK(MessageLoop::current() != view_message_loop_);
-
-  std::wstring text(L"\r\n===== Active Job Summary =====\r\n");
-
-  URLRequestJobTracker::JobIterator begin_job =
-      g_url_request_job_tracker.begin();
-  URLRequestJobTracker::JobIterator end_job = g_url_request_job_tracker.end();
-  int orphaned_count = 0;
-  int regular_count = 0;
-  for (URLRequestJobTracker::JobIterator cur = begin_job;
-       cur != end_job; ++cur) {
-    URLRequestJob* job = (*cur);
-    URLRequest* request = job->request();
-    if (!request) {
-      orphaned_count++;
-      continue;
-    }
-
-    regular_count++;
-
-    // active state
-    if (job->is_done())
-      text.append(L"  Done:   ");
-    else
-      text.append(L"  Active: ");
-
-    // URL
-    text.append(StringForURL(request->url()));
-    text.append(L"\r\n");
-  }
-
-  if (regular_count == 0)
-    text.append(L"  (No active jobs)\r\n");
-
-  if (orphaned_count) {
-    wchar_t buf[64];
-    swprintf(buf, arraysize(buf), L"  %d orphaned jobs\r\n", orphaned_count);
-    text.append(buf);
-  }
-
-  text.append(L"=====\r\n\r\n");
-  AppendText(text);
-}
-
-// IO thread:
-void JobTracker::OnJobAdded(URLRequestJob* job) {
-  DCHECK(MessageLoop::current() != view_message_loop_);
-
-  std::wstring text(L"+ New job : ");
-  text.append(URLForJob(job));
-  text.append(L"\r\n");
-  AppendText(text);
-}
-
-// IO thread:
-void JobTracker::OnJobRemoved(URLRequestJob* job) {
-  DCHECK(MessageLoop::current() != view_message_loop_);
-}
-
-// IO thread:
-void JobTracker::OnJobDone(URLRequestJob* job,
-                           const URLRequestStatus& status) {
-  DCHECK(MessageLoop::current() != view_message_loop_);
-
-  std::wstring text;
-  if (status.is_success()) {
-    text.assign(L"- Complete: ");
-  } else if (status.status() == URLRequestStatus::CANCELED) {
-    text.assign(L"- Canceled: ");
-  } else if (status.status() == URLRequestStatus::HANDLED_EXTERNALLY) {
-    text.assign(L"- Handled externally: ");
-  } else {
-    wchar_t buf[32];
-    swprintf(buf, arraysize(buf), L"Failed with %d: ", status.os_error());
-    text.assign(buf);
-  }
-
-  text.append(URLForJob(job));
-  text.append(L"\r\n");
-  AppendText(text);
-}
-
-// IO thread:
-void JobTracker::OnJobRedirect(URLRequestJob* job,
-                               const GURL& location,
-                               int status_code) {
-  DCHECK(MessageLoop::current() != view_message_loop_);
-
-  std::wstring text(L"- Redirect: ");
-  text.append(URLForJob(job));
-  text.append(L"\r\n  ");
-
-  wchar_t buf[16];
-  swprintf(buf, arraysize(buf), L"(%d) to: ", status_code);
-  text.append(buf);
-
-  text.append(StringForURL(location));
-  text.append(L"\r\n");
-  AppendText(text);
-}
-
-void JobTracker::OnBytesRead(URLRequestJob* job, int byte_count) {
-}
-
-// The singleton job tracker associated with the dialog.
-JobTracker* tracker = NULL;
-
-}  // namespace
-
-// AboutNetworkDialog ----------------------------------------------------------
-
-AboutNetworkDialog::AboutNetworkDialog() : tracking_(false) {
-  SetupControls();
-  tracker = new JobTracker(this);
-  tracker->AddRef();
-}
-
-AboutNetworkDialog::~AboutNetworkDialog() {
-  active_dialog = NULL;
-  tracker->StopTracking();
-  tracker->Release();
-  tracker = NULL;
-}
-
-// static
-void AboutNetworkDialog::RunDialog() {
-  if (!active_dialog) {
-    active_dialog = new AboutNetworkDialog;
-    views::Window::CreateChromeWindow(NULL, gfx::Rect(), active_dialog)->Show();
-  } else {
-    // TOOD(brettw) it would be nice to focus the existing window.
-  }
-}
-
-void AboutNetworkDialog::AppendText(const std::wstring& text) {
-  text_field_->AppendText(text);
-}
-
-void AboutNetworkDialog::SetupControls() {
-  views::GridLayout* layout = CreatePanelGridLayout(this);
-  SetLayoutManager(layout);
-
-  track_toggle_ = new views::TextButton(this, kStartTrackingLabel);
-  show_button_ = new views::TextButton(this, kShowCurrentLabel);
-  clear_button_ = new views::TextButton(this, kClearLabel);
-
-  text_field_ = new views::Textfield(static_cast<views::Textfield::StyleFlags>(
-                                     views::Textfield::STYLE_MULTILINE));
-  text_field_->SetReadOnly(true);
-
-  // TODO(brettw): We may want to add this in the future. It can't be called
-  // from here, though, since the hwnd for the field hasn't been created yet.
-  //
-  // This raises the maximum number of chars from 32K to some large maximum,
-  // probably 2GB. 32K is not nearly enough for our use-case.
-  // SendMessageW(text_field_->GetNativeComponent(), EM_SETLIMITTEXT, 0, 0);
-
-  static const int first_column_set = 1;
-  views::ColumnSet* column_set = layout->AddColumnSet(first_column_set);
-  column_set->AddColumn(views::GridLayout::CENTER, views::GridLayout::CENTER,
-                        33.33f, views::GridLayout::FIXED, 0, 0);
-  column_set->AddColumn(views::GridLayout::CENTER, views::GridLayout::CENTER,
-                        33.33f, views::GridLayout::FIXED, 0, 0);
-  column_set->AddColumn(views::GridLayout::CENTER, views::GridLayout::CENTER,
-                        33.33f, views::GridLayout::FIXED, 0, 0);
-
-  static const int text_column_set = 2;
-  column_set = layout->AddColumnSet(text_column_set);
-  column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::FILL,
-                        100.0f,
-                        views::GridLayout::FIXED, 0, 0);
-
-  layout->StartRow(0, first_column_set);
-  layout->AddView(track_toggle_);
-  layout->AddView(show_button_);
-  layout->AddView(clear_button_);
-  layout->AddPaddingRow(0, kRelatedControlVerticalSpacing);
-  layout->StartRow(1.0f, text_column_set);
-  layout->AddView(text_field_);
-}
-
-gfx::Size AboutNetworkDialog::GetPreferredSize() {
-  return gfx::Size(800, 400);
-}
-
-views::View* AboutNetworkDialog::GetContentsView() {
-  return this;
-}
-
-int AboutNetworkDialog::GetDialogButtons() const {
-  // Don't want OK or Cancel.
-  return 0;
-}
-
-std::wstring AboutNetworkDialog::GetWindowTitle() const {
-  return L"about:network";
-}
-
-bool AboutNetworkDialog::CanResize() const {
-  return true;
-}
-
-void AboutNetworkDialog::ButtonPressed(
-    views::Button* button, const views::Event& event) {
-  if (button == track_toggle_) {
-    if (tracking_) {
-      track_toggle_->SetText(kStartTrackingLabel);
-      tracking_ = false;
-      tracker->StopTracking();
-    } else {
-      track_toggle_->SetText(kStopTrackingLabel);
-      tracking_ = true;
-      tracker->StartTracking();
-    }
-    track_toggle_->SchedulePaint();
-  } else if (button == show_button_) {
-    tracker->ReportStatus();
-  } else if (button == clear_button_) {
-    text_field_->SetText(std::wstring());
-  }
-}