IJInventoryWindowController.m 19 KB

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  1. //
  2. // IJInventoryWindowController.m
  3. // InsideJob
  4. //
  5. // Created by Adam Preble on 10/7/10.
  6. // Copyright 2010 Adam Preble. All rights reserved.
  7. //
  8. #import "IJInventoryWindowController.h"
  9. #import "IJMinecraftLevel.h"
  10. #import "IJInventoryItem.h"
  11. #import "IJInventoryView.h"
  12. #import "IJItemPropertiesViewController.h"
  13. #import "MAAttachedWindow.h"
  14. @interface IJInventoryWindowController ()
  15. - (void)saveWorld;
  16. - (void)loadWorldAtIndex:(int)worldIndex;
  17. - (BOOL)isDocumentEdited;
  18. @end
  19. @implementation IJInventoryWindowController
  20. @synthesize worldSelectionControl;
  21. @synthesize statusTextField;
  22. @synthesize inventoryView, armorView, quickView;
  23. @synthesize itemSearchField, itemTableView;
  24. - (void)awakeFromNib
  25. {
  26. armorInventory = [[NSMutableArray alloc] init];
  27. quickInventory = [[NSMutableArray alloc] init];
  28. normalInventory = [[NSMutableArray alloc] init];
  29. statusTextField.stringValue = @"";
  30. [inventoryView setRows:3 columns:9 invert:NO];
  31. [quickView setRows:1 columns:9 invert:NO];
  32. [armorView setRows:4 columns:1 invert:YES];
  33. inventoryView.delegate = self;
  34. quickView.delegate = self;
  35. armorView.delegate = self;
  36. // Item Table View setup
  37. NSArray *keys = [[IJInventoryItem itemIdLookup] allKeys];
  38. keys = [keys sortedArrayUsingSelector:@selector(compare:)];
  39. allItemIds = [[NSArray alloc] initWithArray:keys];
  40. filteredItemIds = [allItemIds retain];
  41. [itemTableView setTarget:self];
  42. [itemTableView setDoubleAction:@selector(itemTableViewDoubleClicked:)];
  43. }
  44. - (void)dealloc
  45. {
  46. [propertiesViewController release];
  47. [armorInventory release];
  48. [quickInventory release];
  49. [normalInventory release];
  50. [inventory release];
  51. [level release];
  52. [super dealloc];
  53. }
  54. #pragma mark -
  55. #pragma mark World Selection
  56. - (void)dirtyLoadSheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo
  57. {
  58. if (returnCode == NSAlertOtherReturn) // Cancel
  59. {
  60. [worldSelectionControl setSelectedSegment:loadedWorldIndex-1];
  61. return;
  62. }
  63. if (returnCode == NSAlertDefaultReturn) // Save
  64. {
  65. [self saveWorld];
  66. [self loadWorldAtIndex:attemptedLoadWorldIndex];
  67. }
  68. else if (returnCode == NSAlertAlternateReturn) // Don't save
  69. {
  70. [self setDocumentEdited:NO]; // Slightly hacky -- prevent the alert from being put up again.
  71. [self loadWorldAtIndex:attemptedLoadWorldIndex];
  72. }
  73. }
  74. - (void)loadWorldAtIndex:(int)worldIndex
  75. {
  76. if ([self isDocumentEdited])
  77. {
  78. attemptedLoadWorldIndex = worldIndex;
  79. NSBeginInformationalAlertSheet(@"Do you want to save the changes you made in this world?", @"Save", @"Don't Save", @"Cancel", self.window, self, @selector(dirtyLoadSheetDidEnd:returnCode:contextInfo:), nil, nil, @"Your changes will be lost if you do not save them.");
  80. return;
  81. }
  82. [armorInventory removeAllObjects];
  83. [quickInventory removeAllObjects];
  84. [normalInventory removeAllObjects];
  85. [inventoryView setItems:normalInventory];
  86. [quickView setItems:quickInventory];
  87. [armorView setItems:armorInventory];
  88. [self willChangeValueForKey:@"worldTime"];
  89. [level release];
  90. level = nil;
  91. [inventory release];
  92. inventory = nil;
  93. [self didChangeValueForKey:@"worldTime"];
  94. statusTextField.stringValue = @"No world loaded.";
  95. if (![IJMinecraftLevel worldExistsAtIndex:worldIndex])
  96. {
  97. NSBeginCriticalAlertSheet(@"No world exists in that slot.", @"Dismiss", nil, nil, self.window, nil, nil, nil, nil, @"Please create a new single player world in this slot using Minecraft and try again.");
  98. return;
  99. }
  100. sessionLockValue = [IJMinecraftLevel writeToSessionLockAtIndex:worldIndex];
  101. if (![IJMinecraftLevel checkSessionLockAtIndex:worldIndex value:sessionLockValue])
  102. {
  103. NSBeginCriticalAlertSheet(@"Error loading world.", @"Dismiss", nil, nil, self.window, nil, nil, nil, nil, @"Inside Job was unable obtain the session lock.");
  104. return;
  105. }
  106. NSString *levelPath = [IJMinecraftLevel pathForLevelDatAtIndex:worldIndex];
  107. NSData *fileData = [NSData dataWithContentsOfURL:[NSURL fileURLWithPath:levelPath]];
  108. if (!fileData)
  109. {
  110. // Error loading
  111. NSBeginCriticalAlertSheet(@"Error loading world.", @"Dismiss", nil, nil, self.window, nil, nil, nil, nil, @"InsideJob was unable to load the level at %@.", levelPath);
  112. return;
  113. }
  114. [self willChangeValueForKey:@"worldTime"];
  115. level = [[IJMinecraftLevel nbtContainerWithData:fileData] retain];
  116. inventory = [[level inventory] retain];
  117. [self didChangeValueForKey:@"worldTime"];
  118. // Add placeholder inventory items:
  119. for (int i = 0; i < IJInventorySlotQuickLast + 1 - IJInventorySlotQuickFirst; i++)
  120. [quickInventory addObject:[IJInventoryItem emptyItemWithSlot:IJInventorySlotQuickFirst + i]];
  121. for (int i = 0; i < IJInventorySlotNormalLast + 1 - IJInventorySlotNormalFirst; i++)
  122. [normalInventory addObject:[IJInventoryItem emptyItemWithSlot:IJInventorySlotNormalFirst + i]];
  123. for (int i = 0; i < IJInventorySlotArmorLast + 1 - IJInventorySlotArmorFirst; i++)
  124. [armorInventory addObject:[IJInventoryItem emptyItemWithSlot:IJInventorySlotArmorFirst + i]];
  125. // Overwrite the placeholders with actual inventory:
  126. for (IJInventoryItem *item in inventory)
  127. {
  128. if (IJInventorySlotQuickFirst <= item.slot && item.slot <= IJInventorySlotQuickLast)
  129. {
  130. [quickInventory replaceObjectAtIndex:item.slot - IJInventorySlotQuickFirst withObject:item];
  131. }
  132. else if (IJInventorySlotNormalFirst <= item.slot && item.slot <= IJInventorySlotNormalLast)
  133. {
  134. [normalInventory replaceObjectAtIndex:item.slot - IJInventorySlotNormalFirst withObject:item];
  135. }
  136. else if (IJInventorySlotArmorFirst <= item.slot && item.slot <= IJInventorySlotArmorLast)
  137. {
  138. [armorInventory replaceObjectAtIndex:item.slot - IJInventorySlotArmorFirst withObject:item];
  139. }
  140. }
  141. // NSLog(@"normal: %@", normalInventory);
  142. // NSLog(@"quick: %@", quickInventory);
  143. [inventoryView setItems:normalInventory];
  144. [quickView setItems:quickInventory];
  145. [armorView setItems:armorInventory];
  146. [self setDocumentEdited:NO];
  147. statusTextField.stringValue = @"";
  148. loadedWorldIndex = worldIndex;
  149. }
  150. - (void)saveWorld
  151. {
  152. int worldIndex = loadedWorldIndex;
  153. if (inventory == nil)
  154. return; // no world loaded, nothing to save
  155. if (![IJMinecraftLevel checkSessionLockAtIndex:worldIndex value:sessionLockValue])
  156. {
  157. NSBeginCriticalAlertSheet(@"Another application has modified this world.", @"Dismiss", nil, nil, self.window, nil, nil, nil, nil, @"The session lock was changed by another application.");
  158. return;
  159. }
  160. NSString *levelPath = [IJMinecraftLevel pathForLevelDatAtIndex:worldIndex];
  161. NSMutableArray *newInventory = [NSMutableArray array];
  162. for (NSArray *items in [NSArray arrayWithObjects:armorInventory, quickInventory, normalInventory, nil])
  163. {
  164. for (IJInventoryItem *item in items)
  165. {
  166. if (item.count > 0 && item.itemId > 0)
  167. [newInventory addObject:item];
  168. }
  169. }
  170. [level setInventory:newInventory];
  171. NSString *backupPath = [levelPath stringByAppendingPathExtension:@"insidejobbackup"];
  172. BOOL success = NO;
  173. NSError *error = nil;
  174. // Remove a previously-created .insidejobbackup, if it exists:
  175. if ([[NSFileManager defaultManager] fileExistsAtPath:backupPath])
  176. {
  177. success = [[NSFileManager defaultManager] removeItemAtPath:backupPath error:&error];
  178. if (!success)
  179. {
  180. NSLog(@"%s:%d %@", __PRETTY_FUNCTION__, __LINE__, [error localizedDescription]);
  181. NSBeginCriticalAlertSheet(@"An error occurred while saving.", @"Dismiss", nil, nil, self.window, nil, nil, nil, nil, @"Inside Job was unable to remove the prior backup of this level file:\n%@", [error localizedDescription]);
  182. return;
  183. }
  184. }
  185. // Create the backup:
  186. success = [[NSFileManager defaultManager] copyItemAtPath:levelPath toPath:backupPath error:&error];
  187. if (!success)
  188. {
  189. NSLog(@"%s:%d %@", __PRETTY_FUNCTION__, __LINE__, [error localizedDescription]);
  190. NSBeginCriticalAlertSheet(@"An error occurred while saving.", @"Dismiss", nil, nil, self.window, nil, nil, nil, nil, @"Inside Job was unable to create a backup of the existing level file:\n%@", [error localizedDescription]);
  191. return;
  192. }
  193. // Write the new level.dat out:
  194. success = [[level writeData] writeToURL:[NSURL fileURLWithPath:levelPath] options:0 error:&error];
  195. if (!success)
  196. {
  197. NSLog(@"%s:%d %@", __PRETTY_FUNCTION__, __LINE__, [error localizedDescription]);
  198. NSError *restoreError = nil;
  199. success = [[NSFileManager defaultManager] copyItemAtPath:backupPath toPath:levelPath error:&restoreError];
  200. if (!success)
  201. {
  202. NSLog(@"%s:%d %@", __PRETTY_FUNCTION__, __LINE__, [restoreError localizedDescription]);
  203. NSBeginCriticalAlertSheet(@"An error occurred while saving.", @"Dismiss", nil, nil, self.window, nil, nil, nil, nil, @"Inside Job was unable to save to the existing level file, and the backup could not be restored.\n%@\n%@", [error localizedDescription], [restoreError localizedDescription]);
  204. }
  205. else
  206. {
  207. NSBeginCriticalAlertSheet(@"An error occurred while saving.", @"Dismiss", nil, nil, self.window, nil, nil, nil, nil, @"Inside Job was unable to save to the existing level file, and the backup was successfully restored.\n%@", [error localizedDescription]);
  208. }
  209. return;
  210. }
  211. [self setDocumentEdited:NO];
  212. statusTextField.stringValue = @"Saved.";
  213. }
  214. - (void)setDocumentEdited:(BOOL)edited
  215. {
  216. [super setDocumentEdited:edited];
  217. if (edited)
  218. statusTextField.stringValue = @"World has unsaved changes.";
  219. }
  220. - (BOOL)isDocumentEdited
  221. {
  222. return [self.window isDocumentEdited];
  223. }
  224. #pragma mark -
  225. #pragma mark Actions
  226. - (IBAction)menuSelectWorld:(id)sender
  227. {
  228. int worldIndex = [sender tag];
  229. [self loadWorldAtIndex:worldIndex];
  230. [worldSelectionControl setSelectedSegment:worldIndex - 1];
  231. }
  232. - (IBAction)worldSelectionChanged:(id)sender
  233. {
  234. int worldIndex = [worldSelectionControl selectedSegment] + 1;
  235. [self loadWorldAtIndex:worldIndex];
  236. }
  237. - (void)saveDocument:(id)sender
  238. {
  239. [self saveWorld];
  240. }
  241. - (void)delete:(id)sender
  242. {
  243. // IJInventoryItem *item = [outlineView itemAtRow:[outlineView selectedRow]];
  244. // item.count = 0;
  245. // item.itemId = 0;
  246. // item.damage = 0;
  247. // [self setDocumentEdited:YES];
  248. // [outlineView reloadItem:item];
  249. }
  250. - (IBAction)makeSearchFieldFirstResponder:(id)sender
  251. {
  252. [itemSearchField becomeFirstResponder];
  253. }
  254. - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem
  255. {
  256. if (anItem.action == @selector(saveDocument:))
  257. return inventory != nil;
  258. return YES;
  259. }
  260. - (NSNumber *)worldTime
  261. {
  262. return [level worldTimeContainer].numberValue;
  263. }
  264. - (void)setWorldTime:(NSNumber *)number
  265. {
  266. [self willChangeValueForKey:@"worldTime"];
  267. [level worldTimeContainer].numberValue = number;
  268. [self didChangeValueForKey:@"worldTime"];
  269. [self setDocumentEdited:YES];
  270. }
  271. #pragma mark -
  272. #pragma mark IJInventoryViewDelegate
  273. - (IJInventoryView *)inventoryViewForItemArray:(NSMutableArray *)theItemArray
  274. {
  275. if (theItemArray == normalInventory)
  276. return inventoryView;
  277. if (theItemArray == quickInventory)
  278. return quickView;
  279. if (theItemArray == armorInventory)
  280. return armorView;
  281. return nil;
  282. }
  283. - (NSMutableArray *)itemArrayForInventoryView:(IJInventoryView *)theInventoryView slotOffset:(int*)slotOffset
  284. {
  285. if (theInventoryView == inventoryView)
  286. {
  287. if (slotOffset) *slotOffset = IJInventorySlotNormalFirst;
  288. return normalInventory;
  289. }
  290. else if (theInventoryView == quickView)
  291. {
  292. if (slotOffset) *slotOffset = IJInventorySlotQuickFirst;
  293. return quickInventory;
  294. }
  295. else if (theInventoryView == armorView)
  296. {
  297. if (slotOffset) *slotOffset = IJInventorySlotArmorFirst;
  298. return armorInventory;
  299. }
  300. return nil;
  301. }
  302. - (void)inventoryView:(IJInventoryView *)theInventoryView removeItemAtIndex:(int)itemIndex
  303. {
  304. int slotOffset = 0;
  305. NSMutableArray *itemArray = [self itemArrayForInventoryView:theInventoryView slotOffset:&slotOffset];
  306. if (itemArray)
  307. {
  308. IJInventoryItem *item = [IJInventoryItem emptyItemWithSlot:slotOffset + itemIndex];
  309. [itemArray replaceObjectAtIndex:itemIndex withObject:item];
  310. [theInventoryView setItems:itemArray];
  311. }
  312. [self setDocumentEdited:YES];
  313. }
  314. - (void)inventoryView:(IJInventoryView *)theInventoryView setItem:(IJInventoryItem *)item atIndex:(int)itemIndex
  315. {
  316. int slotOffset = 0;
  317. NSMutableArray *itemArray = [self itemArrayForInventoryView:theInventoryView slotOffset:&slotOffset];
  318. if (itemArray)
  319. {
  320. [itemArray replaceObjectAtIndex:itemIndex withObject:item];
  321. item.slot = slotOffset + itemIndex;
  322. [theInventoryView setItems:itemArray];
  323. }
  324. [self setDocumentEdited:YES];
  325. }
  326. - (void)inventoryView:(IJInventoryView *)theInventoryView selectedItemAtIndex:(int)itemIndex
  327. {
  328. // Show the properties window for this item.
  329. IJInventoryItem *lastItem = propertiesViewController.item;
  330. NSPoint itemLocationInView = [theInventoryView pointForItemAtIndex:itemIndex];
  331. NSPoint point = [theInventoryView convertPoint:itemLocationInView toView:nil];
  332. point.x += 16 + 8;
  333. point.y -= 16;
  334. NSArray *items = [self itemArrayForInventoryView:theInventoryView slotOffset:nil];
  335. IJInventoryItem *item = [items objectAtIndex:itemIndex];
  336. //NSLog(@"%s index=%d item=%@", _cmd, itemIndex, item);
  337. if (item.itemId == 0 || lastItem == item)
  338. {
  339. // Perhaps caused by a bug, but it seems to be possible for the window to not be invisible at this point,
  340. // so we will set the alpha value here to be sure.
  341. [propertiesWindow setAlphaValue:0.0];
  342. propertiesViewController.item = nil;
  343. return; // can't show info on nothing
  344. }
  345. if (!propertiesViewController)
  346. {
  347. propertiesViewController = [[IJItemPropertiesViewController alloc] initWithNibName:@"ItemPropertiesView" bundle:nil];
  348. propertiesWindow = [[MAAttachedWindow alloc] initWithView:propertiesViewController.view
  349. attachedToPoint:point
  350. inWindow:self.window
  351. onSide:MAPositionRight
  352. atDistance:0];
  353. [propertiesWindow setBackgroundColor:[NSColor controlBackgroundColor]];
  354. [propertiesWindow setViewMargin:4.0];
  355. [propertiesWindow setAlphaValue:1.0];
  356. [[self window] addChildWindow:propertiesWindow ordered:NSWindowAbove];
  357. }
  358. if (observerObject)
  359. [[NSNotificationCenter defaultCenter] removeObserver:observerObject];
  360. observerObject = [[NSNotificationCenter defaultCenter] addObserverForName:NSWindowDidResignKeyNotification
  361. object:propertiesWindow
  362. queue:[NSOperationQueue mainQueue]
  363. usingBlock:^(NSNotification *notification) {
  364. [propertiesViewController commitEditing];
  365. if (item.count == 0)
  366. item.itemId = 0;
  367. [theInventoryView reloadItemAtIndex:itemIndex];
  368. [propertiesWindow setAlphaValue:0.0];
  369. }];
  370. propertiesViewController.item = item;
  371. [propertiesWindow setPoint:point side:MAPositionRight];
  372. [propertiesWindow makeKeyAndOrderFront:nil];
  373. [propertiesWindow setAlphaValue:1.0];
  374. }
  375. #pragma mark -
  376. #pragma mark Item Picker
  377. - (IBAction)updateItemSearchFilter:(id)sender
  378. {
  379. NSString *filterString = [sender stringValue];
  380. if (filterString.length == 0)
  381. {
  382. [filteredItemIds autorelease];
  383. filteredItemIds = [allItemIds retain];
  384. [itemTableView reloadData];
  385. return;
  386. }
  387. NSMutableArray *results = [NSMutableArray array];
  388. for (NSNumber *itemId in allItemIds)
  389. {
  390. NSString *name = [[IJInventoryItem itemIdLookup] objectForKey:itemId];
  391. NSRange range = [name rangeOfString:filterString options:NSCaseInsensitiveSearch];
  392. if (range.location != NSNotFound)
  393. {
  394. [results addObject:itemId];
  395. continue;
  396. }
  397. // Also search the item id:
  398. range = [[itemId stringValue] rangeOfString:filterString];
  399. if (range.location != NSNotFound)
  400. {
  401. [results addObject:itemId];
  402. continue;
  403. }
  404. }
  405. [filteredItemIds autorelease];
  406. filteredItemIds = [results retain];
  407. [itemTableView reloadData];
  408. }
  409. - (NSInteger)numberOfRowsInTableView:(NSTableView *)theTableView
  410. {
  411. return filteredItemIds.count;
  412. }
  413. - (id)tableView:(NSTableView *)theTableView objectValueForTableColumn:(NSTableColumn *)tableColumn row:(NSInteger)row
  414. {
  415. NSNumber *itemId = [filteredItemIds objectAtIndex:row];
  416. if ([tableColumn.identifier isEqual:@"itemId"])
  417. {
  418. return itemId;
  419. }
  420. else if ([tableColumn.identifier isEqual:@"image"])
  421. {
  422. return [IJInventoryItem imageForItemId:[itemId shortValue]];
  423. }
  424. else
  425. {
  426. NSString *name = [[IJInventoryItem itemIdLookup] objectForKey:itemId];
  427. return name;
  428. }
  429. }
  430. - (BOOL)tableView:(NSTableView *)tableView writeRowsWithIndexes:(NSIndexSet *)rowIndexes toPasteboard:(NSPasteboard *)pboard
  431. {
  432. [pboard declareTypes:[NSArray arrayWithObjects:IJPasteboardTypeInventoryItem, nil] owner:nil];
  433. NSNumber *itemId = [filteredItemIds objectAtIndex:[rowIndexes firstIndex]];
  434. IJInventoryItem *item = [[IJInventoryItem alloc] init];
  435. item.itemId = [itemId shortValue];
  436. item.count = 1;
  437. item.damage = 0;
  438. item.slot = 0;
  439. [pboard setData:[NSKeyedArchiver archivedDataWithRootObject:item]
  440. forType:IJPasteboardTypeInventoryItem];
  441. [item release];
  442. return YES;
  443. }
  444. - (NSMutableArray *)inventoryArrayWithEmptySlot:(NSUInteger *)slot
  445. {
  446. for (NSMutableArray *inventoryArray in [NSArray arrayWithObjects:quickInventory, normalInventory, nil])
  447. {
  448. __block BOOL found = NO;
  449. [inventoryArray enumerateObjectsUsingBlock:^(id obj, NSUInteger index, BOOL *stop) {
  450. IJInventoryItem *item = obj;
  451. if (item.count == 0)
  452. {
  453. *slot = index;
  454. *stop = YES;
  455. found = YES;
  456. }
  457. }];
  458. if (found)
  459. return inventoryArray;
  460. }
  461. return nil;
  462. }
  463. - (IBAction)itemTableViewDoubleClicked:(id)sender
  464. {
  465. NSUInteger slot;
  466. NSMutableArray *inventoryArray = [self inventoryArrayWithEmptySlot:&slot];
  467. if (!inventoryArray)
  468. return;
  469. IJInventoryItem *item = [inventoryArray objectAtIndex:slot];
  470. item.itemId = [[filteredItemIds objectAtIndex:[itemTableView selectedRow]] shortValue];
  471. item.count = 1;
  472. [self setDocumentEdited:YES];
  473. IJInventoryView *invView = [self inventoryViewForItemArray:inventoryArray];
  474. [invView reloadItemAtIndex:slot];
  475. [self inventoryView:invView selectedItemAtIndex:slot];
  476. }
  477. #pragma mark -
  478. #pragma mark NSWindowDelegate
  479. - (void)dirtyCloseSheetDidDismiss:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo
  480. {
  481. if (returnCode == NSAlertOtherReturn) // Cancel
  482. return;
  483. if (returnCode == NSAlertDefaultReturn) // Save
  484. {
  485. [self saveWorld];
  486. [self.window performClose:nil];
  487. }
  488. else if (returnCode == NSAlertAlternateReturn) // Don't save
  489. {
  490. [self setDocumentEdited:NO]; // Slightly hacky -- prevent the alert from being put up again.
  491. [self.window performClose:nil];
  492. }
  493. }
  494. - (BOOL)windowShouldClose:(id)sender
  495. {
  496. if ([self isDocumentEdited])
  497. {
  498. // Note: We use the didDismiss selector becuase the sheet needs to be closed in order for performClose: to work.
  499. NSBeginInformationalAlertSheet(@"Do you want to save the changes you made in this world?", @"Save", @"Don't Save", @"Cancel", self.window, self, nil, @selector(dirtyCloseSheetDidDismiss:returnCode:contextInfo:), nil, @"Your changes will be lost if you do not save them.");
  500. return NO;
  501. }
  502. return YES;
  503. }
  504. - (void)windowWillClose:(NSNotification *)notification
  505. {
  506. [NSApp terminate:nil];
  507. }
  508. #pragma mark -
  509. #pragma mark NSControlTextEditingDelegate
  510. - (BOOL)control:(NSControl *)control textView:(NSTextView *)textView doCommandBySelector:(SEL)command
  511. {
  512. if (command == @selector(moveDown:))
  513. {
  514. if ([itemTableView numberOfRows] > 0)
  515. {
  516. [self.window makeFirstResponder:itemTableView];
  517. [itemTableView selectRowIndexes:[NSIndexSet indexSetWithIndex:0] byExtendingSelection:NO];
  518. }
  519. return YES;
  520. }
  521. return YES;
  522. }
  523. @end