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// 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.
#import "chrome/browser/system_monitor/image_capture_device.h"
#include "base/file_util.h"
#include "base/mac/mac_util.h"
#include "base/system_monitor/system_monitor.h"
#include "chrome/browser/system_monitor/media_storage_util.h"
#include "content/public/browser/browser_thread.h"
namespace {
void RenameFile(const FilePath& downloaded_filename,
const FilePath& desired_filename,
base::PlatformFileError* result) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
bool success = file_util::ReplaceFile(downloaded_filename, desired_filename);
*result = success ? base::PLATFORM_FILE_OK
: base::PLATFORM_FILE_ERROR_NOT_FOUND;
}
void ReturnRenameResultToListener(
base::WeakPtr<ImageCaptureDeviceListener> listener,
const std::string& name,
base::PlatformFileError* result) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
scoped_ptr<base::PlatformFileError> result_deleter(result);
if (listener)
listener->DownloadedFile(name, *result);
}
base::Time NSDateToBaseTime(NSDate* date) {
return base::Time::FromDoubleT([date timeIntervalSince1970]);
}
} // namespace
@implementation ImageCaptureDevice
- (id)initWithCameraDevice:(ICCameraDevice*)cameraDevice {
if ((self = [super init])) {
camera_.reset([cameraDevice retain]);
[camera_ setDelegate:self];
}
return self;
}
- (void)dealloc {
// Make sure the session was closed and listener set to null
// before destruction.
DCHECK(![camera_ delegate]);
DCHECK(!listener_);
[super dealloc];
}
- (void)setListener:(base::WeakPtr<ImageCaptureDeviceListener>)listener {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
listener_ = listener;
}
- (void)open {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
DCHECK(listener_);
[camera_ requestOpenSession];
}
- (void)close {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
[camera_ requestCloseSession];
[camera_ setDelegate:nil];
listener_.reset();
}
- (void)downloadFile:(const std::string&)name
localPath:(const FilePath&)localPath {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
// Find the file with that name and start download.
for (ICCameraItem* item in [camera_ mediaFiles]) {
std::string itemName = base::SysNSStringToUTF8([item name]);
if (itemName == name) {
// To create save options for ImageCapture, we need to
// split the target filename into directory/name
// and encode the directory as a URL.
NSString* saveDirectory =
base::mac::FilePathToNSString(localPath.DirName());
NSString* saveFilename =
base::mac::FilePathToNSString(localPath.BaseName());
NSMutableDictionary* options =
[NSMutableDictionary dictionaryWithCapacity:3];
[options setObject:[NSURL fileURLWithPath:saveDirectory isDirectory:YES]
forKey:ICDownloadsDirectoryURL];
[options setObject:saveFilename forKey:ICSaveAsFilename];
[options setObject:[NSNumber numberWithBool:YES] forKey:ICOverwrite];
[camera_ requestDownloadFile:base::mac::ObjCCastStrict<ICCameraFile>(item)
options:options
downloadDelegate:self
didDownloadSelector:
@selector(didDownloadFile:error:options:contextInfo:)
contextInfo:NULL];
return;
}
}
if (listener_)
listener_->DownloadedFile(name, base::PLATFORM_FILE_ERROR_NOT_FOUND);
}
- (void)cameraDevice:(ICCameraDevice*)camera didAddItem:(ICCameraItem*)item {
std::string name = base::SysNSStringToUTF8([item name]);
base::PlatformFileInfo info;
if ([[item UTI] isEqualToString:base::mac::CFToNSCast(kUTTypeFolder)])
info.is_directory = true;
else
info.size = [base::mac::ObjCCastStrict<ICCameraFile>(item) fileSize];
info.last_modified = NSDateToBaseTime([item modificationDate]);
info.creation_time = NSDateToBaseTime([item creationDate]);
info.last_accessed = info.last_modified;
if (listener_)
listener_->ItemAdded(name, info);
}
- (void)cameraDevice:(ICCameraDevice*)camera didAddItems:(NSArray*)items {
for (ICCameraItem* item in items)
[self cameraDevice:camera didAddItem:item];
}
- (void)didRemoveDevice:(ICDevice*)device {
device.delegate = NULL;
if (listener_)
listener_->DeviceRemoved();
}
// Notifies that a session was opened with the given device; potentially
// with an error.
- (void)device:(ICDevice*)device didOpenSessionWithError:(NSError*)error {
if (error)
[self didRemoveDevice:camera_];
}
- (void)device:(ICDevice*)device didEncounterError:(NSError*)error {
if (error && listener_)
listener_->DeviceRemoved();
}
// When this message is received, all media metadata is now loaded.
- (void)deviceDidBecomeReadyWithCompleteContentCatalog:(ICDevice*)device {
if (listener_)
listener_->NoMoreItems();
}
// For 10.7 and earlier, this method has the semantics of
// deviceDidBecomeReadyWithCompleteContentCatalog. For 10.8++, it has
// the semantics of notifying that the device can receive commands.
- (void)deviceDidBecomeReady:(ICDevice*)device {
if (listener_ && base::mac::IsOSLionOrEarlier())
listener_->NoMoreItems();
}
- (void)didDownloadFile:(ICCameraFile*)file
error:(NSError*)error
options:(NSDictionary*)options
contextInfo:(void*)contextInfo {
std::string name = base::SysNSStringToUTF8([file name]);
if (error) {
if (listener_)
listener_->DownloadedFile(name, base::PLATFORM_FILE_ERROR_FAILED);
return;
}
std::string savedFilename =
base::SysNSStringToUTF8([options objectForKey:ICSavedFilename]);
std::string saveAsFilename =
base::SysNSStringToUTF8([options objectForKey:ICSaveAsFilename]);
if (savedFilename == saveAsFilename) {
if (listener_)
listener_->DownloadedFile(name, base::PLATFORM_FILE_OK);
return;
}
// ImageCapture did not save the file into the name we gave it in the
// options. It picks a new name according to its best lights, so we need
// to rename the file.
FilePath saveDir(base::SysNSStringToUTF8(
[[options objectForKey:ICDownloadsDirectoryURL] path]));
FilePath saveAsPath = saveDir.Append(saveAsFilename);
FilePath savedPath = saveDir.Append(savedFilename);
// Shared result value from file-copy closure to tell-listener closure.
base::PlatformFileError* copyResult = new base::PlatformFileError();
content::BrowserThread::PostTaskAndReply(
content::BrowserThread::FILE,
FROM_HERE,
base::Bind(&RenameFile, savedPath, saveAsPath, copyResult),
base::Bind(&ReturnRenameResultToListener, listener_, name, copyResult));
}
@end // ImageCaptureDevice
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