为NSOutlineView创建新的条目专注和可编辑

Question

当在NSOutlineView中创建一个新项目时，我希望该项目被选中并可编辑，我目前在我的NSOutlineview委托/数据源中使用以下代码，新项目被创建，但它不是专注/可编辑的。

NSWindow *w = [[self outlineView] window]; 
    BOOL endEdit = [w makeFirstResponder:w]; 
    if (!endEdit) { 
     return; 
    } 

    NSUInteger row = [[self outlineView] rowForItem:newGoal]; 

    [[self outlineView] scrollRowToVisible:row]; 

    NSIndexSet *indexSet = [NSIndexSet indexSetWithIndex:row]; 

    [[self outlineView] selectRowIndexes:indexSet byExtendingSelection:NO]; 

    [[self outlineView] editColumn:0 
           row:row 
         withEvent:nil 
          select:YES]; 
     NSError *anyError = nil; 

     BOOL success = [[self myContext] save:&anyError]; 
     if (!success) { 
      NSLog(@"Error = %@", anyError); 
     } 

我的完整文件

// 
// SBOutlineViewController.m 
// Allocator 
// 
// Created by Cory Sullivan on 2013-04-21. 
// 
// 

#import "SBOutlineViewController.h" 
#import "SBAppDelegate.h" 


@interface SBOutlineViewController() 


@end 

NSString * const SBOutlineSelectionChangedNotification = @"SBSelectionChanged"; 


@implementation SBOutlineViewController 




- (void)awakeFromNib 
{ 
    [self setTopLevelItems:[NSArray arrayWithObjects:@"Retirement", @"Education", nil]]; 
    [self setMyContext:[[NSApp delegate] managedObjectContext]]; 

    [self updateOutlineView]; 

} 

- (void)updateOutlineView 
{ 
    NSFetchRequest *myRequest = [[NSFetchRequest alloc] init]; 

    NSEntityDescription *goalEntity = [NSEntityDescription entityForName:@"Goal" inManagedObjectContext:[self myContext]]; 

    [myRequest setEntity:goalEntity]; 

    NSError *anyError = nil; 


    [self setGoalItems:[[self myContext] executeFetchRequest:myRequest error:&anyError]]; 

    NSMutableArray *retirementArray = [[NSMutableArray alloc] init]; 
    NSMutableArray *educationArray = [[NSMutableArray alloc] init]; 

    for (NSManagedObject *goalObject in [self goalItems]) { 
     if ([[goalObject valueForKey:@"goalType"] isEqual: @"Retirement"]) { 

      [retirementArray addObject:goalObject]; 
     } else { 
      if ([[goalObject valueForKey:@"goalType"] isEqual:@"Education"]) { 

       [educationArray addObject:goalObject]; 
      } 
     } 
    } 

[self setMyOutlineDictionary:[[NSMutableDictionary alloc] initWithObjectsAndKeys:retirementArray, @"Retirement", educationArray, @"Education", nil]]; 

[[self outlineView] reloadData]; 

} 

#pragma mark - Delegate and DataSoure Methods 

- (id)outlineView:(NSOutlineView *)outlineView child:(NSInteger)index ofItem:(id)item { 
    return [[self _childrenForItem:item] objectAtIndex:index]; 
} 

- (BOOL)outlineView:(NSOutlineView *)outlineView isItemExpandable:(id)item { 
    if ([outlineView parentForItem:item] == nil) { 
     return YES; 
    } else { 
     return NO; 
    } 
} 

- (BOOL)outlineView:(NSOutlineView *)outlineView shouldSelectItem:(id)item 
{ 
    if ([outlineView parentForItem:item] == nil) { 
     return NO; 
    } else { 
     return YES; 
    } 

} 

- (NSInteger) outlineView:(NSOutlineView *)outlineView numberOfChildrenOfItem:(id)item { 
    return [[self _childrenForItem:item] count]; 
} 

- (BOOL)outlineView:(NSOutlineView *)outlineView isGroupItem:(id)item { 
    return [_topLevelItems containsObject:item]; 
} 


- (void)outlineViewSelectionDidChange:(NSNotification *)notification { 

    if ([_outlineView selectedRow] != -1) { 

     NSNotificationCenter *nc = [NSNotificationCenter defaultCenter]; 
     [nc postNotificationName:SBOutlineSelectionChangedNotification object:self]; 
    } 
} 

- (NSArray *)_childrenForItem:(id)item { 
    NSArray *children; 
    if (item == nil) { 
     children = _topLevelItems; 
    } else { 
     children = [_myOutlineDictionary objectForKey:item]; 
    } 
    return children; 
} 


- (NSView *)outlineView:(NSOutlineView *)outlineView viewForTableColumn:(NSTableColumn *)tableColumn item:(id)item 
{ 
    NSTableCellView *view = nil; 

    if ([_topLevelItems containsObject:item]) { 

     view = [outlineView makeViewWithIdentifier:@"HeaderCell" owner:self]; 
     NSString *value = [item uppercaseString]; 
     [[view textField] setStringValue:value]; 
     return view; 

    } else { 
     view = [outlineView makeViewWithIdentifier:@"DataCell" owner:self]; 
     [[view imageView] setImage:[NSImage imageNamed:NSImageNameActionTemplate]]; 
     NSManagedObject *goalItem = [_goalItems objectAtIndex:[_goalItems indexOfObject:item]]; 

     [[view textField] setStringValue:[goalItem valueForKey:@"goalName"]]; 
     return view; 
    } 
} 

#pragma mark - Custom Actions 


- (IBAction)goalActionPullDown:(id)sender 
{ 
    [self modifyGoalItems: [[sender selectedItem] tag]]; 
} 

- (void)modifyGoalItems:(NSInteger)whichMenuTag 
{ 
    if (whichMenuTag == 5) { 
     NSAlert *alert = [NSAlert alertWithMessageText:@"Are you sure you want to delete goal and all related accounts?" 
             defaultButton:@"Remove" 
             alternateButton:@"Cancel" 
              otherButton:nil 
          informativeTextWithFormat:@"This can't be undone"]; 
     [alert beginSheetModalForWindow:[_outlineView window] 
          modalDelegate:self 
         didEndSelector:@selector(alertEnded:code:context:) 
          contextInfo:NULL]; 
    } else { 

     NSManagedObject *newGoal = [NSEntityDescription insertNewObjectForEntityForName:@"Goal" inManagedObjectContext:[self myContext]]; 

     switch (whichMenuTag) { 
      case 1: 
      { 
       [newGoal setValue:@"New Goal" forKey:@"goalName"]; 
       [newGoal setValue:@"Retirement" forKey:@"goalType"]; 
       [self updateOutlineView]; 
      } 

       break; 
      case 2: 
      { 
       [newGoal setValue:@"New Goal" forKey:@"goalName"]; 
       [newGoal setValue:@"Education" forKey:@"goalType"]; 
       [self updateOutlineView]; 
      } 
       break; 
      case 3: 
       NSLog(@"You selected Item number 3"); 
       break; 

      case 4: 
       NSLog(@"You selected Item number 4"); 
       break; 

      default: 
       break; 

     } 

     NSWindow *w = [[self outlineView] window]; 
     BOOL endEdit = [w makeFirstResponder:w]; 
     if (!endEdit) { 
      return; 
     } 

     NSUInteger row = [[self outlineView] rowForItem:newGoal]; 

     [[self outlineView] scrollRowToVisible:row]; 

     NSIndexSet *indexSet = [NSIndexSet indexSetWithIndex:row]; 

     [[self outlineView] selectRowIndexes:indexSet byExtendingSelection:NO]; 

     [[self outlineView] editColumn:0 
            row:row 
          withEvent:nil 
           select:YES]; 
      NSError *anyError = nil; 

      BOOL success = [[self myContext] save:&anyError]; 
      if (!success) { 
       NSLog(@"Error = %@", anyError); 
      } 
    } 
} 

- (BOOL)tableView:(NSTableView *)aTableView shouldEditTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)rowIndex 
{ 
    return YES; 
} 


- (void)alertEnded:(NSAlert *)alert 
       code:(int)choice 
      context:(void *)v 
{ 

    if (choice == NSAlertDefaultReturn) { 
     NSManagedObject *selectedGoal = [[self outlineView] itemAtRow:[[self outlineView] selectedRow]]; 
     [[self myContext] deleteObject:selectedGoal]; 

     NSError *anyError = nil; 

     BOOL success = [[self myContext] save:&anyError]; 
     if (!success) { 
      NSLog(@"Error = %@", anyError); 
     } 

     [self updateOutlineView]; 

    } 
} 


@end 

Answer 1

任何试图这样做使电流通过运行循环会失败中的字段编辑。你需要做的是在循环的下一次提示选择。类似这样的：

[self performSelector:@selector(selectText:) withObject:textField afterDelay:0]; 

你可能想在textfield上做一些selectText以外的事情，但是这个技巧是你需要的。