当在NSOutlineView中创建新项目时,我希望选择并编辑该项目,我目前在我的NSOutlineview委托/数据源中使用以下代码,新项目已创建,但它不是专注/可编辑。
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);
}
我的完整档案是
//
// 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
答案 0 :(得分:1)
任何尝试使该字段在当前通过运行循环的过程中都可编辑将失败。你需要做的是在循环中下一次提示选择。像这样:
[self performSelector:@selector(selectText:) withObject:textField afterDelay:0];
您可能希望在文本字段上执行selectText以外的操作,但该技术是您所需要的。