transmission/macosx/BlocklistDownloader.m

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/******************************************************************************
* $Id$
*
* Copyright (c) 2008 Transmission authors and contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#import "BlocklistDownloader.h"
#import "PrefsController.h"
#import "NSStringAdditions.h"
#import "NSApplicationAdditions.h"
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#define LIST_URL @"http://download.m0k.org/transmission/files/level1.gz"
#define DESTINATION [NSTemporaryDirectory() stringByAppendingPathComponent: @"level1.gz"]
@interface BlocklistDownloader (Private)
- (id) initWithPrefsController: (PrefsController *) prefsController;
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- (void) startDownload;
- (void) updateProcessString;
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- (void) failureSheetClosed: (NSAlert *) alert returnCode: (int) code contextInfo: (void *) info;
@end
@implementation BlocklistDownloader
+ (id) downloadWithPrefsController: (PrefsController *) prefsController
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{
BlocklistDownloader * downloader = [[BlocklistDownloader alloc] initWithPrefsController: prefsController];
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[downloader startDownload];
}
- (void) awakeFromNib
{
[fButton setTitle: NSLocalizedString(@"Cancel", "Blocklist -> cancel button")];
[fTextField setStringValue: [NSLocalizedString(@"Connecting to site", "Blocklist -> message") stringByAppendingEllipsis]];
[fProgressBar setUsesThreadedAnimation: YES];
[fProgressBar startAnimation: self];
}
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- (void) dealloc
{
[fDownload release];
[super dealloc];
}
- (void) cancelDownload: (id) sender
{
[fDownload cancel];
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[NSApp endSheet: fStatusWindow];
[fStatusWindow orderOut: self];
[self release];
}
- (void) download: (NSURLDownload *) download didReceiveResponse: (NSURLResponse *) response
{
fCurrentSize = 0;
fExpectedSize = [response expectedContentLength];
//change from indeterminate to progress
[fProgressBar setIndeterminate: fExpectedSize == NSURLResponseUnknownLength];
[self updateProcessString];
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}
- (void) download: (NSURLDownload *) download didReceiveDataOfLength: (NSUInteger) length
{
fCurrentSize += length;
[self updateProcessString];
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}
- (void) download: (NSURLDownload *) download didFailWithError: (NSError *) error
{
[fProgressBar setHidden: YES];
[NSApp endSheet: fStatusWindow];
[fStatusWindow orderOut: self];
NSAlert * alert = [[[NSAlert alloc] init] autorelease];
[alert addButtonWithTitle: NSLocalizedString(@"OK", "Blocklist -> button")];
[alert setMessageText: NSLocalizedString(@"Download of the blocklist failed.", "Blocklist -> message")];
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[alert setAlertStyle: NSWarningAlertStyle];
[alert setInformativeText: [NSString stringWithFormat: @"%@ - %@", NSLocalizedString(@"Error", "Blocklist -> message"),
[error localizedDescription]]];
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[alert beginSheetModalForWindow: [fPrefsController window] modalDelegate: self
didEndSelector: @selector(failureSheetClosed:returnCode:contextInfo:) contextInfo: nil];
}
- (void) downloadDidFinish: (NSURLDownload *) download
{
//change to indeterminate while processing
[fProgressBar setIndeterminate: YES];
[fProgressBar startAnimation: self];
[fTextField setStringValue: [NSLocalizedString(@"Processing blocklist", "Blocklist -> message") stringByAppendingEllipsis]];
[fButton setEnabled: NO];
[fStatusWindow display]; //force window to be updated
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//process data
tr_blocklistSetContent([fPrefsController handle], [DESTINATION UTF8String]);
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//delete downloaded file
if ([NSApp isOnLeopardOrBetter])
[[NSFileManager defaultManager] removeItemAtPath: DESTINATION error: NULL];
else
[[NSFileManager defaultManager] removeFileAtPath: DESTINATION handler: nil];
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[fPrefsController updateBlocklistFields];
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[NSApp endSheet: fStatusWindow];
[fStatusWindow orderOut: self];
[self release];
}
@end
@implementation BlocklistDownloader (Private)
- (id) initWithPrefsController: (PrefsController *) prefsController
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{
if ((self = [super init]))
{
fPrefsController = prefsController;
}
return self;
}
- (void) startDownload
{
//load window and show as sheet
[NSBundle loadNibNamed: @"BlocklistStatusWindow" owner: self];
[NSApp beginSheet: fStatusWindow modalForWindow: [fPrefsController window] modalDelegate: nil didEndSelector: nil contextInfo: nil];
//start the download
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NSURLRequest * request = [NSURLRequest requestWithURL: [NSURL URLWithString: LIST_URL]];
fDownload = [[NSURLDownload alloc] initWithRequest: request delegate: self];
[fDownload setDestination: DESTINATION allowOverwrite: YES];
}
- (void) updateProcessString
{
NSString * string = NSLocalizedString(@"Downloading blocklist", "Blocklist -> message");
if (fExpectedSize != NSURLResponseUnknownLength)
{
NSString * substring = [NSString stringWithFormat: NSLocalizedString(@"%@ of %@", "Blocklist -> message"),
[NSString stringForFileSize: fCurrentSize], [NSString stringForFileSize: fExpectedSize]];
string = [string stringByAppendingFormat: @" (%@)", substring];
[fProgressBar setDoubleValue: (double)fCurrentSize / fExpectedSize];
}
[fTextField setStringValue: string];
}
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- (void) failureSheetClosed: (NSAlert *) alert returnCode: (int) code contextInfo: (void *) info
{
[[alert window] orderOut: nil];
[self release];
}
@end