mirror of
https://github.com/classilla/tenfourfox.git
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136 lines
4.2 KiB
C++
136 lines
4.2 KiB
C++
/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "MozMtpStorage.h"
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#include "MozMtpDatabase.h"
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#include "MozMtpServer.h"
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#include "base/message_loop.h"
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#include "nsXULAppAPI.h"
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BEGIN_MTP_NAMESPACE
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using namespace android;
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MozMtpStorage::MozMtpStorage(Volume* aVolume, MozMtpServer* aMozMtpServer)
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: mMozMtpServer(aMozMtpServer),
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mVolume(aVolume)
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{
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MOZ_ASSERT(MessageLoop::current() == XRE_GetIOMessageLoop());
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// The MtpStorageID has the physical volume in the top 16 bits, and the
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// logical volumein the lower 16 bits. We treat each volume as a separate
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// phsyical storage;
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mStorageID = mVolume->Id() << 16 | 1;
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MTP_LOG("Storage constructed for Volume %s mStorageID 0x%08x",
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aVolume->NameStr(), mStorageID);
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Volume::RegisterVolumeObserver(this, "MozMtpStorage");
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// Get things in sync
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Notify(mVolume);
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}
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MozMtpStorage::~MozMtpStorage()
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{
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MOZ_ASSERT(MessageLoop::current() == XRE_GetIOMessageLoop());
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MTP_LOG("Storage destructed for Volume %s mStorageID 0x%08x",
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mVolume->NameStr(), mStorageID);
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Volume::UnregisterVolumeObserver(this, "MozMtpStorage");
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if (mMtpStorage) {
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StorageUnavailable();
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}
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}
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// virtual
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void
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MozMtpStorage::Notify(Volume* const& aVolume)
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{
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MOZ_ASSERT(MessageLoop::current() == XRE_GetIOMessageLoop());
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if (aVolume != mVolume) {
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// Not our volume
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return;
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}
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Volume::STATE volState = aVolume->State();
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MTP_LOG("Volume %s mStorageID 0x%08x state changed to %s SharingEnabled: %d",
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aVolume->NameStr(), mStorageID, aVolume->StateStr(),
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aVolume->IsSharingEnabled());
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// vol->IsSharingEnabled really only applies to UMS volumes. We assume that
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// that as long as MTP is enabled, then all volumes will be shared. The UI
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// currently doesn't give us anything more granular than on/off.
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if (mMtpStorage) {
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if (volState != nsIVolume::STATE_MOUNTED) {
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// The volume is no longer accessible. We need to remove this storage
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// from the MTP server
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StorageUnavailable();
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}
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} else {
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if (volState == nsIVolume::STATE_MOUNTED) {
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// The volume is accessible. Tell the MTP server.
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StorageAvailable();
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}
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}
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}
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void
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MozMtpStorage::StorageAvailable()
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{
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MOZ_ASSERT(MessageLoop::current() == XRE_GetIOMessageLoop());
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nsCString mountPoint = mVolume->MountPoint();
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MTP_LOG("Adding Volume %s mStorageID 0x%08x mountPoint %s to MozMtpDatabase",
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mVolume->NameStr(), mStorageID, mountPoint.get());
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RefPtr<MozMtpDatabase> db = mMozMtpServer->GetMozMtpDatabase();
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db->AddStorage(mStorageID, mountPoint.get(), mVolume->NameStr());
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MOZ_ASSERT(!mMtpStorage);
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//TODO: Figure out what to do about maxFileSize.
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mMtpStorage.reset(new MtpStorage(mStorageID, // id
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mountPoint.get(), // filePath
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mVolume->NameStr(), // description
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1024uLL * 1024uLL, // reserveSpace
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mVolume->IsHotSwappable(), // removable
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2uLL * 1024uLL * 1024uLL * 1024uLL)); // maxFileSize
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RefPtr<RefCountedMtpServer> server = mMozMtpServer->GetMtpServer();
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MTP_LOG("Adding Volume %s mStorageID 0x%08x mountPoint %s to MtpServer",
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mVolume->NameStr(), mStorageID, mountPoint.get());
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server->addStorage(mMtpStorage.get());
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}
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void
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MozMtpStorage::StorageUnavailable()
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{
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MOZ_ASSERT(MessageLoop::current() == XRE_GetIOMessageLoop());
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MOZ_ASSERT(mMtpStorage);
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MTP_LOG("Removing mStorageID 0x%08x from MtpServer", mStorageID);
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RefPtr<RefCountedMtpServer> server = mMozMtpServer->GetMtpServer();
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server->removeStorage(mMtpStorage.get());
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MTP_LOG("Removing mStorageID 0x%08x from MozMtpDatabse", mStorageID);
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RefPtr<MozMtpDatabase> db = mMozMtpServer->GetMozMtpDatabase();
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db->RemoveStorage(mStorageID);
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mMtpStorage = nullptr;
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}
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END_MTP_NAMESPACE
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