Synnefo » Pithos iOS Client

//

//  ObjectVersionsViewController.m

//  pithos-ios

//

// Copyright 2011 GRNET S.A. All rights reserved.

//

// Redistribution and use in source and binary forms, with or

// without modification, are permitted provided that the following

// conditions are met:

// 

//   1. Redistributions of source code must retain the above

//      copyright notice, this list of conditions and the following

//      disclaimer.

// 

//   2. Redistributions in binary form must reproduce the above

//      copyright notice, this list of conditions and the following

//      disclaimer in the documentation and/or other materials

//      provided with the distribution.

// 

// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

// POSSIBILITY OF SUCH DAMAGE.

// 

// The views and conclusions contained in the software and

// documentation are those of the authors and should not be

// interpreted as representing official policies, either expressed

// or implied, of GRNET S.A.

#import "ObjectVersionsViewController.h"

#import "StorageObjectViewController.h"

#import "OpenStackAccount.h"

#import "OpenStackRequest.h"

#import "AccountManager.h"

#import "APICallback.h"

#import "JSON.h"

#import "ActivityIndicatorView.h"

#import "UIViewController+Conveniences.h"

#import "StorageObject.h"

@implementation ObjectVersionsViewController

@synthesize tableView, versions, account, container, object;

#pragma mark - View lifecycle

- (void)viewDidLoad {

    [super viewDidLoad];

    self.navigationItem.title = @"Versions";

    self.versions = [NSMutableArray array];

    versionsLoaded = NO;

    NSString *activityMessage = @"Loading..";

    ActivityIndicatorView *activityIndicatorView = [[ActivityIndicatorView alloc] initWithFrame:[ActivityIndicatorView frameForText:activityMessage] text:activityMessage];

    [activityIndicatorView addToView:self.view];

    [[self.account.manager  getObjectVersionsList:container object:object]

     success:^(OpenStackRequest *request) {

         SBJSON *parser = [[SBJSON alloc] init];

         NSArray *versionsInJson = [[parser objectWithString:[request responseString]] objectForKey:@"versions"];

         for (NSArray *versionInfo in versionsInJson) {

             [versions addObject:[NSDictionary dictionaryWithObjectsAndKeys:[versionInfo objectAtIndex:0], @"versionID",

                                 [NSDate dateWithTimeIntervalSince1970:[[versionInfo objectAtIndex:1] doubleValue]], @"versionDate",

                                 nil]]; 

         }

         [parser release];

         [activityIndicatorView removeFromSuperviewAndRelease];

         versionsLoaded = YES;

         [self.tableView reloadData];

     }

     failure:^(OpenStackRequest *request) {

         [activityIndicatorView removeFromSuperviewAndRelease];

         [self alert:@"Couldn't get versions from server" request:request];

     }];    

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {

    return (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) || (toInterfaceOrientation == UIInterfaceOrientationPortrait);

}

#pragma mark - memory management

- (void)dealloc {

    [account release];

    [container release];

    [object release];

    [versions release];

    [super dealloc];

}

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {

    return 1;

}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    if (!versionsLoaded)

        return 0;

    else

        return MAX(1, versions.count);

}

- (UITableViewCell *)tableView:(UITableView *)aTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [aTableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil) {

        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];

    }

    cell.userInteractionEnabled = YES;

    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;

    cell.selectionStyle = UITableViewCellSelectionStyleBlue;

    if (versions.count == 0 || !versions) {

        cell.textLabel.text = @"No previous versions available";

        cell.userInteractionEnabled = NO;

        cell.accessoryType = UITableViewCellAccessoryNone;

        cell.selectionStyle = UITableViewCellSelectionStyleNone;

    } else {

        NSDictionary *versionDetails = [versions objectAtIndex:indexPath.row];

        cell.textLabel.text = [[versionDetails objectForKey:@"versionID"] description];

        NSString *dateString = [NSDateFormatter localizedStringFromDate:[versionDetails objectForKey:@"versionDate"]

                                                              dateStyle:NSDateFormatterMediumStyle

                                                              timeStyle:NSDateFormatterMediumStyle];

        cell.detailTextLabel.text = dateString;

    }

    return cell;

}

#pragma mark - Table view delegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    NSString *activityMessage = @"Loading..";

    ActivityIndicatorView *activityIndicatorView = [[ActivityIndicatorView alloc] initWithFrame:[ActivityIndicatorView frameForText:activityMessage] text:activityMessage];

    [activityIndicatorView addToView:self.view];

    NSDictionary *versionDetails = [versions objectAtIndex:indexPath.row];

    NSString *versionID = [[versionDetails objectForKey:@"versionID"] description];

    [[self.account.manager getObjectInfo:container object:object version:versionID]

     success:^(OpenStackRequest *request) {

         [activityIndicatorView removeFromSuperviewAndRelease];

         StorageObject *versionedObject = [[[StorageObject alloc] init] autorelease];

         versionedObject.name = object.name;

         versionedObject.fullPath = object.fullPath;

         [versionedObject setPropertiesfromResponseHeaders:request.responseHeaders];

         StorageObjectViewController *vc = [[StorageObjectViewController alloc] initWithNibName:@"StorageObjectViewController" bundle:nil];

         vc.objectIsReadOnly = YES;

         vc.account = account;

         vc.container = container;

         vc.object = versionedObject;

         vc.versionID = versionID;

         [self.navigationController pushViewController:vc animated:YES];

         [vc release];

         [self.tableView deselectRowAtIndexPath:indexPath animated:YES];

     } 

     failure:^(OpenStackRequest *request) {

         [activityIndicatorView removeFromSuperviewAndRelease];

         [self alert:[NSString stringWithFormat:@"Failed to get file info for version: %@", versionID] request:request];

     }];

}

@end