Remove DeviceAttachedIntentSource.

chrome/browser/intents/device_attached_intent_source.cc

-// Copyright (c) 2012 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/intents/device_attached_intent_source.h"
-
-#include <vector>
-
-#include "base/bind.h"
-#include "base/file_path.h"
-#include "base/string16.h"
-#include "base/memory/ref_counted.h"
-#include "base/utf_string_conversions.h"
-#include "chrome/browser/intents/web_intents_registry.h"
-#include "chrome/browser/intents/web_intents_registry_factory.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/system_monitor/media_storage_util.h"
-#include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/browser_window.h"
-#include "content/public/browser/web_intents_dispatcher.h"
-#include "content/public/browser/web_contents_delegate.h"
-#include "webkit/fileapi/file_system_types.h"
-#include "webkit/fileapi/isolated_context.h"
-#include "webkit/glue/web_intent_data.h"
-#include "webkit/glue/web_intent_service_data.h"
-
-using base::SystemMonitor;
-using chrome::MediaStorageUtil;
-using content::WebContentsDelegate;
-using webkit_glue::WebIntentServiceData;
-
-namespace {
-
-// Specifies device attached web intent kAction.
-const char kAction[] = "chrome-extension://attach";
-
-// Specifies device attached web intent type.
-const char kIntentType[] = "chrome-extension://filesystem";
-
-// Dispatch intent only when there is a list of registered services. This is a
-// helper class that stores the attached media device information and decides
-// whether to dispatch an intent or not.
-class DispatchIntentTaskHelper
-    : public base::RefCountedThreadSafe<DispatchIntentTaskHelper> {
- public:
-  DispatchIntentTaskHelper(
-      const base::WeakPtr<DeviceAttachedIntentSource> source,
-      SystemMonitor::RemovableStorageInfo device_info)
-      : source_(source),
-        device_info_(device_info) {
-  }
-
-  // Query callback for WebIntentsRegistry::GetIntentServices function.
-  void MayDispatchIntentForService(
-      const std::vector<WebIntentServiceData>& services) {
-    if (!services.empty() && source_)
-      source_->DispatchIntentsForService(device_info_);
-  }
-
- private:
-  friend class base::RefCountedThreadSafe<DispatchIntentTaskHelper>;
-
-  ~DispatchIntentTaskHelper() {}
-
-  // A weak pointer to |DeviceAttachedIntentSource| object to dispatch a
-  // web intent.
-  base::WeakPtr<DeviceAttachedIntentSource> source_;
-
-  // Store the device info. This is used while registering the device as file
-  // system.
-  const SystemMonitor::RemovableStorageInfo device_info_;
-
-  DISALLOW_COPY_AND_ASSIGN(DispatchIntentTaskHelper);
-};
-
-}  // namespace
-
-DeviceAttachedIntentSource::DeviceAttachedIntentSource(
-    Browser* browser, WebContentsDelegate* delegate)
-    : browser_(browser), delegate_(delegate) {
-  SystemMonitor* sys_monitor = SystemMonitor::Get();
-  if (sys_monitor)
-    sys_monitor->AddDevicesChangedObserver(this);
-}
-
-DeviceAttachedIntentSource::~DeviceAttachedIntentSource() {
-  SystemMonitor* sys_monitor = SystemMonitor::Get();
-  if (sys_monitor)
-    sys_monitor->RemoveDevicesChangedObserver(this);
-}
-
-void DeviceAttachedIntentSource::OnRemovableStorageAttached(
-    const std::string& id,
-    const string16& name,
-    const FilePath::StringType& location) {
-  if (!browser_->window()->IsActive())
-    return;
-
-  // TODO(kmadhusu): Dispatch intents on incognito window.
-  if (browser_->profile()->IsOffTheRecord())
-    return;
-
-  // Only handle mass storage for now.
-  // TODO(kmadhusu): Handle all device types. http://crbug.com/140353.
-  if (!MediaStorageUtil::IsMassStorageDevice(id))
-    return;
-  DCHECK(MediaStorageUtil::IsRemovableDevice(id));
-
-  // Sanity checks for |device_path|.
-  const FilePath device_path(location);
-  if (!device_path.IsAbsolute() || device_path.ReferencesParent())
-    return;
-
-  SystemMonitor::RemovableStorageInfo device_info(id, name, location);
-  scoped_refptr<DispatchIntentTaskHelper> task = new DispatchIntentTaskHelper(
-      AsWeakPtr(), device_info);
-  WebIntentsRegistryFactory::GetForProfile(browser_->profile())->
-      GetIntentServices(
-          UTF8ToUTF16(kAction), UTF8ToUTF16(kIntentType),
-          base::Bind(&DispatchIntentTaskHelper::MayDispatchIntentForService,
-                     task.get()));
-}
-
-void DeviceAttachedIntentSource::DispatchIntentsForService(
-    const base::SystemMonitor::RemovableStorageInfo& device_info) {
-  // Store the media device info locally.
-  device_id_map_.insert(std::make_pair(device_info.device_id, device_info));
-
-  std::string device_name(UTF16ToUTF8(device_info.name));
-  const FilePath device_path(device_info.location);
-
-  // TODO(kinuko, kmadhusu): Use a different file system type for MTP.
-  // TODO(kmadhusu): To manage the registered file systems efficiently, register
-  // the attached device media file system using MediaFileSystemRegistry.
-  const std::string fs_id = fileapi::IsolatedContext::GetInstance()->
-      RegisterFileSystemForPath(fileapi::kFileSystemTypeNativeMedia,
-                                device_path, &device_name);
-
-  DCHECK(!fs_id.empty());
-  webkit_glue::WebIntentData intent(
-      UTF8ToUTF16(kAction), UTF8ToUTF16(kIntentType), device_name, fs_id);
-
-  delegate_->WebIntentDispatch(NULL  /* no WebContents */,
-                               content::WebIntentsDispatcher::Create(intent));
-}
-
-void DeviceAttachedIntentSource::OnRemovableStorageDetached(
-    const std::string& id) {
-  DeviceIdToInfoMap::iterator it = device_id_map_.find(id);
-  if (it == device_id_map_.end())
-    return;
-
-  FilePath path(it->second.location);
-  fileapi::IsolatedContext::GetInstance()->RevokeFileSystemByPath(path);
-  device_id_map_.erase(it);
-}