Synnefo » Pithos iOS Client

//

//  FolderViewController.m

//  OpenStack

//

//  Created by Mike Mayo on 12/15/10.

//  The OpenStack project is provided under the Apache 2.0 license.

//

#import "FolderViewController.h"

#import "OpenStackAccount.h"

#import "Container.h"

#import "Folder.h"

#import "StorageObject.h"

#import "StorageObjectViewController.h"

#import "ContainerDetailViewController.h"

#import "AccountManager.h"

#import "ActivityIndicatorView.h"

#import "ContainersViewController.h"

#import "UIViewController+Conveniences.h"

#import "AddObjectViewController.h"

#import "OpenStackAppDelegate.h"

#import "RootViewController.h"

#import "FolderDetailViewController.h"

#import "AccountHomeViewController.h"

#import "PithosImageViewController.h"

#import "OpenStackRequest.h"

#import "JSON.h"

#import "APICallback.h"

#import "OpenStackAppDelegate.h"

#import <MobileCoreServices/MobileCoreServices.h>

#import "ComputeModel.h"

@implementation FolderViewController

@synthesize account, container, folder, containersViewController, selectedContainerIndexPath, contentsLoaded, parentFolderViewController, selectedFolderIndexPath, tableView, needsRefreshing, folderHasBeenRemoved, refreshWhenAppeared, folderDetailVC, selectedObjectViewController, refreshButton;

#pragma mark - View lifecycle

- (void)viewDidLoad {

    [super viewDidLoad];

    [self addAddButton];

    [self addHomeButton];

}

- (void)viewWillAppear:(BOOL)animated {

    [super viewWillAppear:animated];

    if (folder.name && ![@"" isEqualToString:folder.name]) {

        self.navigationItem.title = self.folder.name;

    } else {

        self.navigationItem.title = self.container.name;

    }

    self.selectedObjectViewController = nil;

}

- (void)viewDidAppear:(BOOL)animated {

    [super viewDidAppear:animated];

    if (!self.folder) {

        if (folderHasBeenRemoved) {

            if (needsRefreshing) 

                self.parentFolderViewController.needsRefreshing = YES;

            [self.navigationController popViewControllerAnimated:YES];

        } else {

            [self refreshButtonPressed:nil];

        }

    } else if (self.needsRefreshing) {

        self.parentFolderViewController.needsRefreshing = YES;

        if (refreshWhenAppeared) {

            [self refreshButtonPressed:nil];

            refreshWhenAppeared = NO;

        }

        if (account.shared && ([folder.folders count] + [folder.objects count] == 0)) {

            [self.navigationController popViewControllerAnimated:YES];

        }

    }

}

- (void)viewWillDisappear:(BOOL)animated {

    [super viewWillDisappear:animated];

    if (![self.navigationController.viewControllers containsObject:self] &&

        self.parentViewController &&

        (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)) {

        [parentFolderViewController setDetailViewController];

    }

}

#pragma mark - Memory management

- (void)dealloc {

    [account release];

    [container release];

    [folder release];

    [containersViewController release];

    [selectedContainerIndexPath release];

    [parentFolderViewController release];

    [selectedFolderIndexPath release];

    [refreshButton release];

    [super dealloc];

}

#pragma mark - Internal

- (void)reloadFolderViewControllers {

    NSArray *viewControllers = [self.navigationController viewControllers];

    int rootFolderControllerIndex = [viewControllers indexOfObject:self.containersViewController] + 1;

    FolderViewController *rootFolderViewController = [viewControllers objectAtIndex:rootFolderControllerIndex];

    rootFolderViewController.folder = self.container.rootFolder;

    [rootFolderViewController.tableView reloadData];

    for (int i = rootFolderControllerIndex + 1; i < [viewControllers count]; i++) {

        FolderViewController *folderViewController = [viewControllers objectAtIndex:i];

        Folder *parentFolder = folderViewController.parentFolderViewController.folder;

        folderViewController.folder = [parentFolder.folders objectForKey:folderViewController.folder.name];

        if (folderViewController.folder) {

            [folderViewController.tableView reloadData];

        } else {

            folderViewController.folderHasBeenRemoved = YES;

        }

    }

    if (!self.folder || (account.shared && [folder.folders count] + [folder.objects count] == 0)) {

        if (needsRefreshing && self.parentFolderViewController) {

            self.parentFolderViewController.needsRefreshing = YES;

        }

        [self.navigationController popViewControllerAnimated:YES];

    } else if ((UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) && account.shared) {

        [self setDetailViewController];

    }

}

#pragma mark - Actions

- (void)setDetailViewController {

    if ([self.folder isEqual:self.container.rootFolder]) {

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

        vc.account = self.account;

        vc.container = self.container;

        vc.containersViewController = self.containersViewController;

        vc.rootFolderViewController = self;

        vc.selectedContainerIndexPath = self.selectedContainerIndexPath;

        [self presentPrimaryViewController:vc];

        self.containersViewController.containerDetailViewController = vc;

        [vc release];

    } else {

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

        vc.account = self.account;

        vc.container = self.container;

        vc.folder = self.folder;

        vc.folderViewController = self.parentFolderViewController;

        [self presentPrimaryViewController:vc];

        self.parentFolderViewController.folderDetailVC = vc;

        [vc release];

    }

}

#pragma mark - UITableViewDataSource

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

    return MAX(contentsLoaded ? 1 : 0, [folder.objects count] + [folder.folders count]);

}

- (CGFloat)tableView:(UITableView *)aTableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {

    if ([folder.objects count] + [folder.folders count] == 0) {

        aTableView.scrollEnabled = NO;

        aTableView.allowsSelection = NO;

        return aTableView.frame.size.height;

    } else {

        aTableView.scrollEnabled = YES;

        aTableView.allowsSelection = YES;

        return aTableView.rowHeight;

    }

}

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

    if ([folder.objects count] + [folder.folders count] == 0) {

        NSString *noFoldersTitle = (self.account.shared || self.account.sharingAccount) ?

        @"No shared Files or Folders" : @"No Files or Folders";

        NSString *noFoldersSubtitle = (self.account.shared || self.account.sharingAccount || [self.folder.name hasSuffix:@"/"]) ?

        @"" : @"Tap the + button to create a new one";

        NSString *deleteFolderButtonTitle = (self.account.shared || self.account.sharingAccount) ?

        nil : @"Delete Folder";

        SEL deleteButtonSelector = (self.account.shared || self.account.sharingAccount) ? nil : @selector(deleteButtonPressed:);

        self.navigationItem.rightBarButtonItem.enabled = (self.account.shared || [self.folder.name hasSuffix:@"/"]) ? NO : YES;

        if ([self.container.rootFolder isEqual:self.folder]) {

            return [self tableView:aTableView

                emptyCellWithImage:[UIImage imageNamed:@"empty-files.png"]

                             title:noFoldersTitle

                          subtitle:noFoldersSubtitle];

        } else {

            return [self tableView:aTableView

                emptyCellWithImage:[UIImage imageNamed:@"empty-files.png"]

                             title:noFoldersTitle

                          subtitle:noFoldersSubtitle

                 deleteButtonTitle:deleteFolderButtonTitle

              deleteButtonSelector:deleteButtonSelector];

        }

    } else {

        static NSString *CellIdentifier = @"Cell";

        UITableViewCell *cell = [aTableView dequeueReusableCellWithIdentifier:CellIdentifier];

        if (cell == nil) {

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

        }

        id item = [[self.folder sortedContents] objectAtIndex:indexPath.row];

        [cell.textLabel setLineBreakMode:UILineBreakModeTailTruncation];

        cell.textLabel.text = [item name];

        if ([[item class] isEqual:[Folder class]]) {

            if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

                cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;

            } else {

                cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;

            }

            cell.imageView.image = [UIImage imageNamed:@"folder-icon.png"];

            NSString *folderString = @"";

            NSString *objectString = @"";

            if ([[item folders] count] > 1) {

                folderString = [NSString stringWithFormat:@"%i folders, ", [[item folders] count]];

            } else if ([[item folders] count] > 0) {

                folderString = @"1 folder, ";

            }

            if ([[item objects] count] != 1) {

                objectString = [NSString stringWithFormat:@"%i objects", [[item objects] count]];

            } else if ([[item objects] count]) {

                objectString = @"1 object";

            }

            cell.detailTextLabel.text = [NSString stringWithFormat:@"%@%@", folderString, objectString];

        } else if ([[item class] isEqual:[StorageObject class]]) {

            [cell.textLabel setLineBreakMode:UILineBreakModeMiddleTruncation];

            cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;

            StorageObject *object = item;

            CFStringRef mimeType = (CFStringRef)object.contentType;

            CFStringRef uti = UTTypeCreatePreferredIdentifierForTag(kUTTagClassMIMEType, mimeType, NULL);

            NSString *emptyPath = [[NSBundle mainBundle] pathForResource:@"empty-file" ofType:@""];

            UIDocumentInteractionController *udic = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:emptyPath]];

            if (((NSString *)uti).length > 0)

                udic.UTI = (NSString *)uti;

            if ([udic.icons count] > 0) 

                cell.imageView.image = [udic.icons objectAtIndex:0];

            if ([item lastModifiedString])

                cell.detailTextLabel.text = [NSString stringWithFormat:@"%@, %@", [item humanizedBytes], [item lastModifiedString]];

            else

                cell.detailTextLabel.text = [item humanizedBytes];

        }

        return cell;

    }        

}

#pragma mark - UITableViewDelegate

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

    if ([folder.objects count] + [folder.folders count] > 0) {

        id item = [self.folder.sortedContents objectAtIndex:indexPath.row];        

        if ([[item class] isEqual:[Folder class]]) {

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

            vc.account = self.account;

            vc.container = self.container;

            vc.folder = item;

            vc.contentsLoaded = YES;

            vc.selectedFolderIndexPath = indexPath;

            vc.parentFolderViewController = self;

            vc.containersViewController = self.containersViewController;

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

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

            if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

                Folder *folderForDetailView;

                if ([folder.sortedContents count] > 0) {

                    folderForDetailView = [self.folder.sortedContents objectAtIndex:indexPath.row];

                } else {

                    folderForDetailView = nil;

                }

                FolderDetailViewController *folderDetailViewController = [[FolderDetailViewController alloc] initWithNibName:@"FolderDetailViewController" bundle:nil];

                folderDetailViewController.account = account;

                folderDetailViewController.container = container;

                folderDetailViewController.folder = folderForDetailView;

                folderDetailViewController.folderViewController = vc;

                [self presentPrimaryViewController:folderDetailViewController];

                self.folderDetailVC = folderDetailViewController;

                [folderDetailViewController release];

            }

            [vc release];

        } else if ([[item class] isEqual:[StorageObject class]]) {

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

            vc.account = self.account;

            vc.container = self.container;

            vc.folder = self.folder;

            vc.object = item;

            vc.folderViewController = self;

            vc.selectedIndexPath = indexPath;

            [self presentPrimaryViewController:vc];

            if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

                self.selectedObjectViewController = vc;

                OpenStackAppDelegate *app = [[UIApplication sharedApplication] delegate];

                if (app.rootViewController.popoverController != nil) {

                    [app.rootViewController.popoverController dismissPopoverAnimated:YES];

                }

            } else {

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

            }

            [vc release];

        }

    }

}

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

    Folder *folderForDetailView;

    if ([folder.sortedContents count] > 0) {

        folderForDetailView = [self.folder.sortedContents objectAtIndex:indexPath.row];

    } else {

        folderForDetailView = nil;

    }

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

    vc.account = account;

    vc.container = container;

    vc.folder = folderForDetailView;

    vc.folderViewController = self;

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

    [vc release];

}

#pragma mark - Button Handlers

- (IBAction)homeButtonPressed:(id)sender {

    [self.navigationController popToViewController:containersViewController.accountHomeViewController animated:YES];

}

- (IBAction)refreshButtonPressed:(id)sender {

    activityIndicatorView = [[ActivityIndicatorView alloc] initWithFrame:[ActivityIndicatorView frameForText:@"Loading..."] text:@"Loading..."];

    [activityIndicatorView addToView:self.view];

    [self.account.manager getObjects:self.container];

    successObserver = [[NSNotificationCenter defaultCenter] addObserverForName:@"getObjectsSucceeded"

                                                                        object:self.container

                                                                         queue:[NSOperationQueue mainQueue]

                                                                    usingBlock:^(NSNotification* notification)

    {

        [activityIndicatorView removeFromSuperviewAndRelease];

        contentsLoaded = YES;

        [self reloadFolderViewControllers];

        needsRefreshing = NO;

        if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

           if (self.selectedObjectViewController) {

               [self.selectedObjectViewController reloadMetadataSection];

           } else if ([self.folder isEqual:container.rootFolder]) {

               [containersViewController.containerDetailViewController reloadMetadataSection];

           } else if ([parentFolderViewController.folderDetailVC.navigationController.topViewController 

                       isEqual:parentFolderViewController.folderDetailVC]) {

               [parentFolderViewController.folderDetailVC reloadMetadataSection];

           }

        }

        [[NSNotificationCenter defaultCenter] removeObserver:successObserver];

    }];

    failureObserver = [[NSNotificationCenter defaultCenter] addObserverForName:@"getObjectsFailed"

                                                                        object:self.container

                                                                         queue:[NSOperationQueue mainQueue]

                                                                    usingBlock:^(NSNotification* notification)

    {

        needsRefreshing = NO;

        [self.tableView reloadData];

        [activityIndicatorView removeFromSuperviewAndRelease];

        [self alert:@"Error" message:@"Failed to retrieve files from server"];

        [[NSNotificationCenter defaultCenter] removeObserver:failureObserver];

    }];

}

- (void)addButtonPressed:(id)sender {

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

    vc.account = self.account;

    vc.container = self.container;

    vc.folder = self.folder;

    vc.folderViewController = self;

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

        vc.modalPresentationStyle = UIModalPresentationFormSheet;

        OpenStackAppDelegate *app = [[UIApplication sharedApplication] delegate];

        if (app.rootViewController.popoverController != nil) {

            [app.rootViewController.popoverController dismissPopoverAnimated:YES];

        }

    }

    [self presentModalViewControllerWithNavigation:vc animated:YES];

    [vc release];

}

- (void)deleteButtonPressed:(id)sender {

    UIActionSheet *deleteActionSheet = [[[UIActionSheet alloc] initWithTitle:@"Are you sure you want to delete this folder? This operation cannot be undone."

                                                                    delegate:self

                                                           cancelButtonTitle:@"Cancel"

                                                      destructiveButtonTitle:@"Delete Folder"

                                                           otherButtonTitles:nil] autorelease];

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

        OpenStackAppDelegate *appDelegate = (OpenStackAppDelegate *)[[UIApplication sharedApplication] delegate];

        [deleteActionSheet showInView:appDelegate.masterNavigationController.view];

    } else {

        [deleteActionSheet showInView:self.view];

    }

}

#pragma mark - UIActionSheetDelegate

- (void)deleteFolderRow {

    [self.parentFolderViewController.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:selectedFolderIndexPath] withRowAnimation:UITableViewRowAnimationLeft];

}

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {

    if (buttonIndex == 0) {

        StorageObject *object = [[StorageObject alloc] init];

        object.name = object.fullPath = [self.folder fullPath];

        NSString *activityMessage = @"Deleting folder...";

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

        [activityIndicatorView addToView:self.view scrollOffset:self.tableView.contentOffset.y];    

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

         success:^(OpenStackRequest *request) {

             if (self.folder.parent) {

                 [self.folder.parent.folders removeObjectForKey:self.folder.name];

             } else {

                 [self.container.rootFolder.folders removeObjectForKey:self.folder.name];

             }

             [self.account persist];

             [activityIndicatorView removeFromSuperviewAndRelease];

             [self.navigationController popViewControllerAnimated:YES];

             if (self.folder.parent) {

                 if ([self.folder.parent.folders count] + [self.folder.parent.objects count] == 0) {

                     [self.parentFolderViewController.tableView reloadData];

                 } else {

                     [self.parentFolderViewController.tableView selectRowAtIndexPath:selectedFolderIndexPath animated:YES scrollPosition:UITableViewScrollPositionNone];

                     [NSTimer scheduledTimerWithTimeInterval:0.75 target:self selector:@selector(deleteFolderRow) userInfo:nil repeats:NO];

                 }

                 if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

                     [self.parentFolderViewController setDetailViewController];

             } else {

                 if ([self.container.rootFolder.folders count] + [self.container.rootFolder.objects count] == 0) {

                     [self.parentFolderViewController.tableView reloadData];

                 } else {

                     [self.parentFolderViewController.tableView selectRowAtIndexPath:selectedFolderIndexPath animated:YES scrollPosition:UITableViewScrollPositionNone];

                     [NSTimer scheduledTimerWithTimeInterval:0.75 target:self selector:@selector(deleteFolderRow) userInfo:nil repeats:NO];

                 }

             }

             [object release];

         }

         failure:^(OpenStackRequest *request) {

             [activityIndicatorView removeFromSuperviewAndRelease];

             [self alert:@"There was a problem deleting this folder." request:request];

             [object release];

         }];        

    }

}

@end