code.grnet.gr Git - pithos-ios/blob - Classes/EditMetadataViewController.m

   1 //
   2 //  EditMetadataViewController.m
   3 //  pithos-ios
   4 //
   5 // Copyright 2011 GRNET S.A. All rights reserved.
   6 //
   7 // Redistribution and use in source and binary forms, with or
   8 // without modification, are permitted provided that the following
   9 // conditions are met:
  10 //
  11 //   1. Redistributions of source code must retain the above
  12 //      copyright notice, this list of conditions and the following
  13 //      disclaimer.
  14 //
  15 //   2. Redistributions in binary form must reproduce the above
  16 //      copyright notice, this list of conditions and the following
  17 //      disclaimer in the documentation and/or other materials
  18 //      provided with the distribution.
  19 //
  20 // THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  21 // OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  22 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  24 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  27 // USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  28 // AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29 // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  30 // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31 // POSSIBILITY OF SUCH DAMAGE.
  32 //
  33 // The views and conclusions contained in the software and
  34 // documentation are those of the authors and should not be
  35 // interpreted as representing official policies, either expressed
  36 // or implied, of GRNET S.A.
  37
  38 #import "EditMetadataViewController.h"
  39 #import "AccountManager.h"
  40 #import "UIViewController+Conveniences.h"
  41
  42
  43
  44 @implementation EditMetadataViewController
  45
  46
  47 @synthesize container, account, object;
  48
  49 @synthesize metadataKey;
  50 @synthesize metadataValue;
  51 @synthesize deleteEnabled;
  52
  53 #define kMetadata 0
  54 #define kSaveMedata 1
  55 #define kDeleteMetadata 2
  56
  57
  58 - (void)dealloc
  59 {
  60     [account release];
  61     [container release];
  62     [object release];
  63     [metadataKey release];
  64     [metadataValue release];
  65     [super dealloc];
  66 }
  67
  68 - (void)didReceiveMemoryWarning
  69 {
  70     // Releases the view if it doesn't have a superview.
  71     [super didReceiveMemoryWarning];
  72
  73     // Release any cached data, images, etc that aren't in use.
  74 }
  75
  76 #pragma mark - View lifecycle
  77
  78 - (void)viewDidLoad
  79 {
  80     [super viewDidLoad];
  81 }
  82
  83 - (void)viewDidUnload
  84 {
  85     [super viewDidUnload];
  86 }
  87
  88 - (void)viewWillAppear:(BOOL)animated
  89 {
  90     [super viewWillAppear:animated];
  91 }
  92
  93 - (void)viewDidAppear:(BOOL)animated
  94 {
  95     [super viewDidAppear:animated];
  96 }
  97
  98 - (void)viewWillDisappear:(BOOL)animated
  99 {
 100     [super viewWillDisappear:animated];
 101 }
 102
 103 - (void)viewDidDisappear:(BOOL)animated
 104 {
 105     [super viewDidDisappear:animated];
 106 }
 107
 108 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {
 109     return (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) || (toInterfaceOrientation == UIInterfaceOrientationPortrait);
 110 }
 111
 112 #pragma mark - Table view data source
 113
 114 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
 115 {
 116     return (deleteEnabled)? 3:2;
 117 }
 118
 119 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
 120 {
 121     if (section == kMetadata)
 122         return 2;
 123     else
 124         return 1;
 125 }
 126
 127 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
 128 {
 129     static NSString *CellIdentifier = @"Cell";
 130     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
 131     if (cell == nil) {
 132         cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
 133     }
 134     CGRect bounds = [cell.contentView bounds];
 135     CGRect rect = CGRectInset(bounds, 20.0, 10.0);
 136     UITextField *textField = [[UITextField alloc] initWithFrame:rect];
 137     [textField setFrame:rect];
 138     [textField setClearButtonMode:UITextFieldViewModeWhileEditing];
 139     [textField setBackgroundColor:[UIColor whiteColor]];
 140     [textField setOpaque:YES];
 141     [textField setAutocorrectionType:UITextAutocorrectionTypeNo];
 142     [textField setAutocapitalizationType:UITextAutocapitalizationTypeNone];
 143     [textField setDelegate:self];
 144
 145     if (indexPath.section == kMetadata) {
 146         if (indexPath.row == 0) {
 147             [textField setReturnKeyType:UIReturnKeyNext];
 148             textField.placeholder = @"Key";
 149             textField.text = metadataKey;
 150             textField.tag = 0;
 151         }
 152         else if (indexPath.row == 1) {
 153             textField.placeholder = @"Value";
 154             textField.text = metadataValue;
 155             textField.tag = 1;
 156         }
 157
 158         cell.selectionStyle = UITableViewCellSelectionStyleNone;
 159         [cell.contentView addSubview:textField];
 160     }
 161     else if (indexPath.section == kSaveMedata)
 162         cell.textLabel.text = @"Save";
 163     else if (indexPath.section == kDeleteMetadata)
 164         cell.textLabel.text = @"Delete";
 165
 166     return cell;
 167 }
 168
 169
 170 #pragma mark - Table view delegate
 171
 172 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
 173 {
 174     NSString *activityMessage;
 175     NSIndexPath *keyCellIndexPath;
 176     NSIndexPath *valueCellIndexPath;
 177     UITableViewCell *cell;
 178     switch (indexPath.section) {
 179         case kSaveMedata:
 180             keyCellIndexPath = [NSIndexPath indexPathForRow:0 inSection:kMetadata];
 181             cell = [self.tableView cellForRowAtIndexPath:keyCellIndexPath];
 182             UITextField *textField = [[cell.contentView subviews] objectAtIndex:0];
 183             NSString *newMetadataKey = textField.text;
 184
 185             if ([newMetadataKey length] == 0
 186                 || [[newMetadataKey stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] length] == 0) {
 187                 [self.tableView deselectRowAtIndexPath:indexPath animated:YES];
 188                 [self alert:@"Invalid input" message:@"Metadata key cannot be empty"];
 189                 return;
 190             }
 191
 192             valueCellIndexPath = [NSIndexPath indexPathForRow:1 inSection:kMetadata];
 193             cell = [self.tableView cellForRowAtIndexPath:valueCellIndexPath];
 194             textField = [[cell.contentView subviews] objectAtIndex:0];
 195             NSString *newMetadataValue = textField.text;
 196
 197             activityMessage = @"Saving metadata";
 198
 199             activityIndicatorView = [[ActivityIndicatorView alloc] initWithFrame:[ActivityIndicatorView frameForText:activityMessage] text:activityMessage];
 200             [activityIndicatorView addToView:self.view];
 201
 202             [object.metadata removeObjectForKey:metadataKey];
 203             [object.metadata setObject:newMetadataValue forKey:newMetadataKey];
 204             [self.account.manager writeObjectMetadata:container object:object];
 205             successObserver = [[NSNotificationCenter defaultCenter] addObserverForName:@"writeObjectMetadataSucceeded"
 206                                                                                 object:object
 207                                                                                  queue:[NSOperationQueue mainQueue]
 208                                                                             usingBlock:^(NSNotification *notification)
 209                                {
 210                                    self.metadataKey = newMetadataKey;
 211                                    self.metadataValue = newMetadataValue;
 212
 213                                    [activityIndicatorView removeFromSuperviewAndRelease];
 214                                    [self.tableView deselectRowAtIndexPath:indexPath animated:YES];
 215                                    [[NSNotificationCenter defaultCenter] removeObserver:successObserver];
 216                                }];
 217
 218             failureObserver = [[NSNotificationCenter defaultCenter] addObserverForName:@"writeObjectMetadataFailed"
 219                                                                                 object:object
 220                                                                                  queue:[NSOperationQueue mainQueue]
 221                                                                             usingBlock:^(NSNotification *notification)
 222                                {
 223                                    [object.metadata removeObjectForKey:newMetadataKey];
 224                                    [object.metadata setObject:metadataValue forKey:metadataKey];
 225                                    [activityIndicatorView removeFromSuperviewAndRelease];
 226                                    [self.tableView deselectRowAtIndexPath:indexPath animated:YES];
 227                                    [self alert:@"There was a problem saving the metadata." request:[notification.userInfo objectForKey:@"request"]];
 228
 229                                    [[NSNotificationCenter defaultCenter] removeObserver:failureObserver];
 230                                }];
 231
 232             break;
 233         case kDeleteMetadata:
 234             activityMessage = @"Deleting metadata";
 235             activityIndicatorView = [[ActivityIndicatorView alloc] initWithFrame:[ActivityIndicatorView frameForText:activityMessage] text:activityMessage];
 236             [activityIndicatorView addToView:self.view];
 237
 238             [object.metadata removeObjectForKey:metadataKey];
 239             [self.account.manager writeObjectMetadata:container object:object];
 240             successObserver = [[NSNotificationCenter defaultCenter] addObserverForName:@"writeObjectMetadataSucceeded"
 241                                                                                 object:object
 242                                                                                  queue:[NSOperationQueue mainQueue]
 243                                                                             usingBlock:^(NSNotification *notification)
 244                                {
 245                                    [activityIndicatorView removeFromSuperviewAndRelease];
 246                                    [self.tableView deselectRowAtIndexPath:indexPath animated:YES];
 247                                    self.metadataKey = @"";
 248                                    self.metadataValue = @"";
 249
 250                                    [self.tableView reloadData];
 251                                    [[NSNotificationCenter defaultCenter] removeObserver:successObserver];
 252                                }];
 253
 254             failureObserver = [[NSNotificationCenter defaultCenter] addObserverForName:@"writeObjectMetadataFailed"
 255                                                                                 object:object
 256                                                                                  queue:[NSOperationQueue mainQueue]
 257                                                                             usingBlock:^(NSNotification *notification)
 258                                {
 259                                    [object.metadata setObject:metadataValue forKey:metadataKey];
 260                                    [activityIndicatorView removeFromSuperviewAndRelease];
 261                                    [self.tableView deselectRowAtIndexPath:indexPath animated:YES];
 262                                    [self alert:@"There was a problem saving the metadata." request:[notification.userInfo objectForKey:@"request"]];
 263
 264                                    [[NSNotificationCenter defaultCenter] removeObserver:failureObserver];
 265                                }];
 266
 267             break;
 268     }
 269 }
 270
 271 #pragma mark - Textfield delegate
 272
 273 - (void)textFieldDidEndEditing:(UITextField *)textField
 274 {
 275     if ([textField tag] == 0) {
 276         if ([textField.text length] == 0
 277             || [[textField.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] length] == 0) {
 278             [self alert:@"Invalid input" message:@"Metadata key cannot be empty"];
 279         }
 280     }
 281 }
 282
 283
 284
 285 - (BOOL)textFieldShouldReturn:(UITextField *)textField
 286 {
 287
 288     if ([textField returnKeyType] == UIReturnKeyNext)
 289     {
 290         NSInteger nextTag = [textField tag] + 1;
 291         UIView *nextTextField = [self.tableView viewWithTag:nextTag];
 292         [nextTextField becomeFirstResponder];
 293     }
 294     else
 295     {
 296         [textField resignFirstResponder];
 297     }
 298
 299     return YES;
 300 }
 301
 302 @end