我只有一个主要细节的应用程序OS X 10.9：
窗口左侧是NSTableView，右侧是NSTextFields的详细信息
我没有专门设置标签顺序，开箱即可正常工作。
插入新对象后除外：
我想要的是什么：
更新： 我发现奇怪的行为是通过在Interface Builder中启用NSArrayController的“自动重新排列内容”来触发的。如果我禁用它，我不再失去焦点。请参阅CoreData-bound NSTableView loses input focus when items change, but only if sorted。
但是，当然，我仍然希望我的内容能够自动进行分类 - 在此操作过程中不会失去我的注意力。可以这样做吗？
UPDATE2：当我的文本字段失去键盘焦点时，我跟着@KenThomases建议并记录了堆栈跟踪：
2014-08-17 16:30:26.003 ResponderExperiment[712:303] (
0 ResponderExperiment 0x00000001000014dd -[WMWindow makeFirstResponder:] + 61
1 AppKit 0x00007fff8d25c778 -[NSTextView(NSPrivate) _giveUpFirstResponder:] + 257
2 AppKit 0x00007fff8d25c56c -[NSTextView(NSKeyBindingCommands) insertTab:] + 270
3 AppKit 0x00007fff8d22dc2f -[NSResponder doCommandBySelector:] + 71
4 AppKit 0x00007fff8d25b10a -[NSTextView doCommandBySelector:] + 196
5 AppKit 0x00007fff8d22d151 -[NSKeyBindingManager(NSKeyBindingManager_MultiClients) interpretEventAsCommand:forClient:] + 1392
6 AppKit 0x00007fff8d24c1c2 -[NSTextInputContext handleEvent:] + 845
7 AppKit 0x00007fff8d22b9dd -[NSView interpretKeyEvents:] + 180
8 AppKit 0x00007fff8d24bd6d -[NSTextView keyDown:] + 658
9 AppKit 0x00007fff8d1f856b -[NSWindow sendEvent:] + 1843
10 AppKit 0x00007fff8d199b32 -[NSApplication sendEvent:] + 3395
11 AppKit 0x00007fff8cfe99f9 -[NSApplication run] + 646
12 AppKit 0x00007fff8cfd4783 NSApplicationMain + 940
13 ResponderExperiment 0x0000000100002de2 main + 34
14 libdyld.dylib 0x00007fff8c5bf5fd start + 1
15 ??? 0x0000000000000003 0x0 + 3
)
2014-08-17 16:30:26.014 ResponderExperiment[712:303] (
0 ResponderExperiment 0x00000001000014dd -[WMWindow makeFirstResponder:] + 61
1 AppKit 0x00007fff8d03c918 -[NSControl abortEditing] + 83
2 AppKit 0x00007fff8d2723e0 -[NSValueBinder discardEditing] + 162
3 AppKit 0x00007fff8d1aee30 -[NSController discardEditing] + 115
4 AppKit 0x00007fff8d1af971 -[NSArrayController rearrangeObjects] + 27
5 AppKit 0x00007fff8d3697a9 -[NSArrayController observeValueForKeyPath:ofObject:change:context:] + 294
6 AppKit 0x00007fff8d39ac08 -[NSArrayController _setMultipleValue:forKeyPath:atIndex:] + 323
7 AppKit 0x00007fff8d39ba12 -[NSArrayController _setSingleValue:forKeyPath:] + 137
8 Foundation 0x00007fff8bf9e19a -[NSObject(NSKeyValueCoding) setValue:forKeyPath:] + 285
9 AppKit 0x00007fff8d25444c -[NSBinder _setValue:forKeyPath:ofObject:mode:validateImmediately:raisesForNotApplicableKeys:error:] + 364
10 AppKit 0x00007fff8d254287 -[NSBinder setValue:forBinding:error:] + 245
11 AppKit 0x00007fff8d74c4ee -[NSValueBinder _applyObjectValue:forBinding:canRecoverFromErrors:handleErrors:typeOfAlert:discardEditingCallback:otherCallback:callbackContextInfo:didRunAlert:] + 194
12 AppKit 0x00007fff8d74c871 -[NSValueBinder applyDisplayedValueHandleErrors:typeOfAlert:canRecoverFromErrors:discardEditingCallback:otherCallback:callbackContextInfo:didRunAlert:error:] + 621
13 AppKit 0x00007fff8d74c9d4 -[NSValueBinder _applyDisplayedValueIfHasUncommittedChangesWithHandleErrors:typeOfAlert:discardEditingCallback:otherCallback:callbackContextInfo:didRunAlert:error:] + 127
14 AppKit 0x00007fff8d253c2e -[NSValueBinder validateAndCommitValueInEditor:editingIsEnding:errorUserInterfaceHandled:] + 436
15 AppKit 0x00007fff8d253a57 -[_NSBindingAdaptor _validateAndCommitValueInEditor:editingIsEnding:errorUserInterfaceHandled:bindingAdaptor:] + 160
16 AppKit 0x00007fff8d25399d -[_NSBindingAdaptor validateAndCommitValueInEditor:editingIsEnding:errorUserInterfaceHandled:] + 260
17 AppKit 0x00007fff8d25e0ba -[NSTextField textShouldEndEditing:] + 402
18 AppKit 0x00007fff8d25dc63 -[NSTextView(NSSharing) resignFirstResponder] + 393
19 AppKit 0x00007fff8d136170 -[NSWindow makeFirstResponder:] + 455
20 ResponderExperiment 0x000000010000154c -[WMWindow makeFirstResponder:] + 172
21 AppKit 0x00007fff8d25c778 -[NSTextView(NSPrivate) _giveUpFirstResponder:] + 257
22 AppKit 0x00007fff8d25c56c -[NSTextView(NSKeyBindingCommands) insertTab:] + 270
23 AppKit 0x00007fff8d22dc2f -[NSResponder doCommandBySelector:] + 71
24 AppKit 0x00007fff8d25b10a -[NSTextView doCommandBySelector:] + 196
25 AppKit 0x00007fff8d22d151 -[NSKeyBindingManager(NSKeyBindingManager_MultiClients) interpretEventAsCommand:forClient:] + 1392
26 AppKit 0x00007fff8d24c1c2 -[NSTextInputContext handleEvent:] + 845
27 AppKit 0x00007fff8d22b9dd -[NSView interpretKeyEvents:] + 180
28 AppKit 0x00007fff8d24bd6d -[NSTextView keyDown:] + 658
29 AppKit 0x00007fff8d1f856b -[NSWindow sendEvent:] + 1843
30 AppKit 0x00007fff8d199b32 -[NSApplication sendEvent:] + 3395
31 AppKit 0x00007fff8cfe99f9 -[NSApplication run] + 646
32 AppKit 0x00007fff8cfd4783 NSApplicationMain + 940
33 ResponderExperiment 0x0000000100002de2 main + 34
34 libdyld.dylib 0x00007fff8c5bf5fd start + 1
35 ??? 0x0000000000000003 0x0 + 3
)
那么也许我可以编写自己的NSArrayController rearrangeObjects：方法，它不会失去焦点？
答案 0 :(得分：2)
这是一个可能的解决方案。我们的想法是将文本字段（或更准确地说，为文本字段提供服务的字段编辑器）的响应重新实现为Tab键，作为两个单独的步骤。首先，结束编辑，这将使阵列控制器重新排列其内容。我们通过重置焦点来结束编辑，所以我们不关心阵列控制器可能会做什么来集中注意力。然后，我们自己从最初聚焦的文本字段推进焦点。
在文本字段上设置委托。在该代理中，实现以下方法：
- (BOOL) control:(NSControl*)control textView:(NSTextView*)textView doCommandBySelector:(SEL)command
{
if (command == @selector(insertTab:))
{
// End editing. This will commit the edited value and cause the array controller
// to rearranged its contents.
[control.window makeFirstResponder:nil];
// This will put focus on the next control from the text field.
[control.window selectKeyViewFollowingView:control];
// Prevent the normal processing of this command
return YES;
}
if (command == @selector(insertBacktab:))
{
// End editing. This will commit the edited value and cause the array controller
// to rearranged its contents.
[control.window makeFirstResponder:nil];
// This will put focus on the previous control from the text field.
[control.window selectKeyViewPrecedingView:control];
// Prevent the normal processing of this command
return YES;
}
return NO;
}
我不确定的一件事：如果不是选择远离文本字段，而是单击另一个文本字段，会发生什么。在这种情况下阵列控制器是否仍然重置焦点？
答案 1 :(得分：0)
就我而言，我已经用我自己的逻辑覆盖了NSControl的abortEditing方法。
- (BOOL)abortEditing {
MyObject *object = [myArrayController.arrangedObjects objectAtIndex:self.editedRow];
return ![[Manager sharedInstance] isObjectBeingEditing:object];
}