Create an initial Chrome page for file browsing. This just implements the

ability to list files and display them in JS via DOMUI.

BUG=none
TEST=none
Original review: http://codereview.chromium.org/255090
Patch by David Garcia.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@29723 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 288 insertions, 0 deletions

diff --git a/chrome/browser/dom_ui/dom_ui_factory.cc b/chrome/browser/dom_ui/dom_ui_factory.cc
index ad98860..9912ee3 100644
--- a/chrome/browser/dom_ui/dom_ui_factory.cc
+++ b/chrome/browser/dom_ui/dom_ui_factory.cc
@@ -7,6 +7,7 @@
 #include "chrome/browser/dom_ui/downloads_ui.h"
 #include "chrome/browser/dom_ui/devtools_ui.h"
 #include "chrome/browser/dom_ui/history_ui.h"
+#include "chrome/browser/dom_ui/filebrowse_ui.h"
 #include "chrome/browser/dom_ui/html_dialog_ui.h"
 #include "chrome/browser/dom_ui/new_tab_ui.h"
 #include "chrome/browser/dom_ui/print_ui.h"
@@ -88,6 +89,11 @@ static DOMUIFactoryFunction GetDOMUIFactoryFunction(const GURL& url) {
   if (url.host() == chrome::kChromeUIDevToolsHost)
     return &NewDOMUI<DevToolsUI>;
 
+#if defined(OS_CHROMEOS)
+  if (url.host() == chrome::kChromeUIFileBrowseHost)
+    return &NewDOMUI<FileBrowseUI>;
+#endif
+
   return NULL;
 }
 
diff --git a/chrome/browser/dom_ui/filebrowse_ui.cc b/chrome/browser/dom_ui/filebrowse_ui.cc
new file mode 100644
index 0000000..eacf872
--- /dev/null
+++ b/chrome/browser/dom_ui/filebrowse_ui.cc
@@ -0,0 +1,255 @@
+// Copyright (c) 2009 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/dom_ui/filebrowse_ui.h"
+
+#include "app/l10n_util.h"
+#include "app/resource_bundle.h"
+#include "base/logging.h"
+#include "base/message_loop.h"
+#include "base/string_piece.h"
+#include "base/string_util.h"
+#include "base/thread.h"
+#include "base/time.h"
+#include "base/values.h"
+#include "chrome/browser/bookmarks/bookmark_model.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/dom_ui/dom_ui_favicon_source.h"
+#include "chrome/browser/metrics/user_metrics.h"
+#include "chrome/browser/history/history_types.h"
+#include "chrome/browser/profile.h"
+#include "chrome/common/jstemplate_builder.h"
+#include "chrome/common/time_format.h"
+#include "chrome/common/url_constants.h"
+#include "net/base/escape.h"
+
+#include "grit/browser_resources.h"
+#include "grit/chromium_strings.h"
+#include "grit/generated_resources.h"
+#include "grit/locale_settings.h"
+
+// Maximum number of search results to return in a given search. We should
+// eventually remove this.
+static const int kMaxSearchResults = 100;
+static const std::wstring kPropertyPath = L"path";
+static const std::wstring kPropertyTitle = L"title";
+static const std::wstring kPropertyDirectory = L"isDirectory";
+
+
+class FileBrowseUIHTMLSource : public ChromeURLDataManager::DataSource {
+ public:
+  FileBrowseUIHTMLSource();
+
+  // Called when the network layer has requested a resource underneath
+  // the path we registered.
+  virtual void StartDataRequest(const std::string& path, int request_id);
+  virtual std::string GetMimeType(const std::string&) const {
+    return "text/html";
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(FileBrowseUIHTMLSource);
+};
+
+// The handler for Javascript messages related to the "filebrowse" view.
+class FileBrowseHandler : public net::DirectoryLister::DirectoryListerDelegate,
+                          public DOMMessageHandler {
+ public:
+  FileBrowseHandler();
+  virtual ~FileBrowseHandler();
+
+  // DirectoryLister::DirectoryListerDelegate methods:
+  virtual void OnListFile(const file_util::FileEnumerator::FindInfo& data);
+  virtual void OnListDone(int error);
+
+  // DOMMessageHandler implementation.
+  virtual DOMMessageHandler* Attach(DOMUI* dom_ui);
+  virtual void RegisterMessages();
+
+  // Callback for the "getRoots" message.
+  void HandleGetRoots(const Value* value);
+
+  // Callback for the "getChildren" message.
+  void HandleGetChildren(const Value* value);
+
+  // Callback for the "getMetadata" message.
+  void HandleGetMetadata(const Value* value);
+
+ private:
+  scoped_ptr<ListValue> filelist_value_;
+  FilePath currentpath_;
+  scoped_refptr<net::DirectoryLister> lister_;
+
+  DISALLOW_COPY_AND_ASSIGN(FileBrowseHandler);
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// FileBrowseHTMLSource
+//
+////////////////////////////////////////////////////////////////////////////////
+
+FileBrowseUIHTMLSource::FileBrowseUIHTMLSource()
+    : DataSource(chrome::kChromeUIFileBrowseHost, MessageLoop::current()) {
+}
+
+void FileBrowseUIHTMLSource::StartDataRequest(const std::string& path,
+                                              int request_id) {
+  DictionaryValue localized_strings;
+  localized_strings.SetString(L"devices", "devices");
+
+  SetFontAndTextDirection(&localized_strings);
+
+  static const base::StringPiece filebrowse_html(
+      ResourceBundle::GetSharedInstance().GetRawDataResource(
+          IDR_FILEBROWSE_HTML));
+  const std::string full_html = jstemplate_builder::GetI18nTemplateHtml(
+      filebrowse_html, &localized_strings);
+
+  scoped_refptr<RefCountedBytes> html_bytes(new RefCountedBytes);
+  html_bytes->data.resize(full_html.size());
+  std::copy(full_html.begin(), full_html.end(), html_bytes->data.begin());
+
+  SendResponse(request_id, html_bytes);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// FileBrowseHandler
+//
+////////////////////////////////////////////////////////////////////////////////
+FileBrowseHandler::FileBrowseHandler() {
+  lister_ = NULL;
+}
+
+FileBrowseHandler::~FileBrowseHandler() {
+  // TODO: Cancel any pending listings that are currently in flight.
+  if (lister_.get()) {
+    lister_->Cancel();
+    lister_->set_delegate(NULL);
+  }
+}
+
+DOMMessageHandler* FileBrowseHandler::Attach(DOMUI* dom_ui) {
+  // Create our favicon data source.
+  g_browser_process->io_thread()->message_loop()->PostTask(FROM_HERE,
+      NewRunnableMethod(&chrome_url_data_manager,
+      &ChromeURLDataManager::AddDataSource,
+      new DOMUIFavIconSource(dom_ui->GetProfile())));
+
+  return DOMMessageHandler::Attach(dom_ui);
+}
+
+void FileBrowseHandler::RegisterMessages() {
+  dom_ui_->RegisterMessageCallback("getRoots",
+      NewCallback(this, &FileBrowseHandler::HandleGetRoots));
+  dom_ui_->RegisterMessageCallback("getChildren",
+      NewCallback(this, &FileBrowseHandler::HandleGetChildren));
+  dom_ui_->RegisterMessageCallback("getMetadata",
+      NewCallback(this, &FileBrowseHandler::HandleGetMetadata));
+}
+
+void FileBrowseHandler::HandleGetRoots(const Value* value) {
+  ListValue results_value;
+  DictionaryValue info_value;
+
+  DictionaryValue* page_value = new DictionaryValue();
+  // TODO(dhg): add other entries, make this more general
+  page_value->SetString(kPropertyPath, "/home/chronos");
+  page_value->SetString(kPropertyTitle, "home");
+  page_value->SetBoolean(kPropertyDirectory, true);
+
+  results_value.Append(page_value);
+
+  info_value.SetString(L"call", "getRoots");
+
+  dom_ui_->CallJavascriptFunction(L"fileBrowseResult",
+                                  info_value, results_value);
+}
+
+void FileBrowseHandler::HandleGetChildren(const Value* value) {
+  std::string path;
+
+  if (value && value->GetType() == Value::TYPE_LIST) {
+    const ListValue* list_value = static_cast<const ListValue*>(value);
+    Value* list_member;
+
+    // Get search string.
+    if (list_value->Get(0, &list_member) &&
+        list_member->GetType() == Value::TYPE_STRING) {
+      const StringValue* string_value =
+          static_cast<const StringValue*>(list_member);
+      string_value->GetAsString(&path);
+    }
+
+  } else {
+    DLOG(ERROR) << "Wasn't able to get the List if requested files.";
+    return;
+  }
+  filelist_value_.reset(new ListValue());
+#if defined(OS_WIN)
+  currentpath_ = FilePath(ASCIIToWide(path));
+#else
+  currentpath_ = FilePath(path);
+#endif
+
+  if (lister_.get()) {
+    lister_->Cancel();
+    lister_->set_delegate(NULL);
+    lister_ = NULL;
+  }
+  lister_ = new net::DirectoryLister(currentpath_, this);
+  lister_->Start();
+}
+
+void FileBrowseHandler::OnListFile(
+    const file_util::FileEnumerator::FindInfo& data) {
+  DictionaryValue* file_value = new DictionaryValue();
+
+#if defined(OS_WIN)
+  int64 size = (static_cast<int64>(data.nFileSizeHigh) << 32) |
+      data.nFileSizeLow;
+  file_value->SetString(kPropertyTitle, data.cFileName);
+  file_value->SetString(kPropertyPath,
+                        currentpath_.Append(data.cFileName).value());
+  file_value->SetBoolean(kPropertyDirectory,
+      (data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? true : false);
+
+#elif defined(OS_POSIX)
+  file_value->SetString(kPropertyTitle, data.filename);
+  file_value->SetString(kPropertyPath,
+                        currentpath_.Append(data.filename).value());
+  file_value->SetBoolean(kPropertyDirectory, S_ISDIR(data.stat.st_mode));
+#endif
+  filelist_value_->Append(file_value);
+}
+
+void FileBrowseHandler::OnListDone(int error) {
+  DictionaryValue info_value;
+  info_value.SetString(L"call", "getChildren");
+  info_value.SetString(kPropertyPath, currentpath_.value());
+  dom_ui_->CallJavascriptFunction(L"fileBrowseResult",
+                                  info_value, *(filelist_value_.get()));
+}
+
+void FileBrowseHandler::HandleGetMetadata(const Value* value) {
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// FileBrowseUIContents
+//
+////////////////////////////////////////////////////////////////////////////////
+
+FileBrowseUI::FileBrowseUI(TabContents* contents) : DOMUI(contents) {
+  AddMessageHandler((new FileBrowseHandler())->Attach(this));
+  DLOG(ERROR) << "Got call to filebrowseUI";
+  FileBrowseUIHTMLSource* html_source = new FileBrowseUIHTMLSource();
+
+  // Set up the chrome://filebrowse/ source.
+  g_browser_process->io_thread()->message_loop()->PostTask(FROM_HERE,
+      NewRunnableMethod(&chrome_url_data_manager,
+          &ChromeURLDataManager::AddDataSource,
+          html_source));
+}
diff --git a/chrome/browser/dom_ui/filebrowse_ui.h b/chrome/browser/dom_ui/filebrowse_ui.h
new file mode 100644
index 0000000..6da8916
--- /dev/null
+++ b/chrome/browser/dom_ui/filebrowse_ui.h
@@ -0,0 +1,27 @@
+// Copyright (c) 2009 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.
+
+#ifndef CHROME_BROWSER_DOM_UI_FILEBROWSE_UI_H_
+#define CHROME_BROWSER_DOM_UI_FILEBROWSE_UI_H_
+
+#include "base/file_path.h"
+#include "base/scoped_ptr.h"
+#include "base/values.h"
+#include "chrome/browser/dom_ui/chrome_url_data_manager.h"
+#include "chrome/browser/dom_ui/dom_ui.h"
+#include "chrome/browser/history/history.h"
+#include "net/base/directory_lister.h"
+
+
+class GURL;
+
+class FileBrowseUI : public DOMUI {
+ public:
+  explicit FileBrowseUI(TabContents* contents);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(FileBrowseUI);
+};
+
+#endif  // CHROME_BROWSER_DOM_UI_FILEBROWSE_UI_H_