I just implemented following method that suppose to take some action after the value of a NSTextField is changed in my NSOutlineView
-(BOOL)control:(NSControl *)control textShouldEndEditing:(NSText *)fieldEditor
{
NSLog(#"end editing");
NSTextField* tf = (NSTextField*)control;
if(selectedItem && [selectedItem isKindOfClass:[HSCategoryClass class]])
{
HSCategoryClass* c = selectedItem;
c.name = tf.stringValue;
// request the update from DB
[[NSNotificationCenter defaultCenter] postNotificationName:#"updatingCategoryName"
object:c
userInfo:#{#"sender":self}];
}
return YES;
}
However, when I'm done editing and hit enter key or navigate anywhere outside of the text field this method is getting called twice instead of just once.
Does anyone know why is this?!
Any kind of help is highly appreciated!
That routine does not signify that editing has ended. Instead, it's called to find out if it should end (hence the name of the method). It can be called by the framework any number of times, and you shouldn't be relying on it for this purpose.
Instead override the NSOutlineView's textDidEndEditing: method.
Be sure to call super.
So you'd subclass the NSOutlineView and in your subclass:
- (void)textDidEndEditing:(NSNotification *)aNotification
{
// do your stuff
[super textDidEndEditing:aNotification];
}
Related
Below is my typical WindowController module for presenting a modal dialog (could be settings, asking username/password, etc) loaded from a XIB. It seems a bit too complex for something like this. Any ideas how this can be done better/with less code?
Never mind that it's asking for a password, it could be anything. What frustrates me most is that I repeat the same pattern in each and every of my XIB-based modal window modules. Which of course means I could define a custom window controller class, but before doing that I need to make sure this is really the best way of doing things.
#import "MyPasswordWindowController.h"
static MyPasswordWindowController* windowController;
#interface MyPasswordWindowController ()
#property (weak) IBOutlet NSSecureTextField *passwordField;
#end
#implementation MyPasswordWindowController
{
NSInteger _dialogCode;
}
- (id)init
{
return [super initWithWindowNibName:#"MyPassword"];
}
- (void)awakeFromNib
{
[super awakeFromNib];
[self.window center];
}
- (void)windowWillClose:(NSNotification*)notification
{
[NSApp stopModalWithCode:_dialogCode];
_dialogCode = 0;
}
- (IBAction)okButtonAction:(NSButton *)sender
{
_dialogCode = 1;
[self.window close];
}
- (IBAction)cancelButtonAction:(NSButton *)sender
{
[self.window close];
}
+ (NSString*)run
{
if (!windowController)
windowController = [MyPasswordWindowController new];
[windowController loadWindow];
windowController.passwordField.stringValue = #"";
if ([NSApp runModalForWindow:windowController.window])
return windowController.passwordField.stringValue;
return nil;
}
The application calls [MyPasswordWindowController run], so from the point of view of the user of this module it looks simple, but not so much when you look inside.
Set tags on your buttons to distinguish them. Have them both target the same action method:
- (IBAction) buttonAction:(NSButton*)sender
{
[NSApp stopModalWithCode:[sender tag]];
[self.window close];
}
Get rid of your _dialogCode instance variable and -windowWillClose: method.
-[NSApplication runModalForWindow:] will already center the window, so you can get rid of your -awakeFromNib method.
Get rid of the invocation of -[NSWindowController loadWindow]. That's an override point. You're not supposed to call it. The documentation is clear on that point. It will be called automatically when you request the window controller's -window.
Get rid of the static instance of MyPasswordWindowController. Just allocate a new one each time. There's no point in keeping the old one around and it can be troublesome to reuse windows.
I subclassed NSSecureTextField, and overrided -(BOOL)becomeFirstResponder,but it only works well when my custom NSSecureTextField get focus at the first time.
I think it is not a problem of NSSecureTextField. It is a problem of how a control get focused.
Create a new project and only drag two NSSecureTextField on your view. Set the custom class of one of them to MySecureTextField defined below and keep the other one default. Run the project and change focus between the two NSSecureTextField, you will see the "Get focus" printed when the custom one get focus each time.
Back to your program, please check if the NSSecureTextField is lost focus? Does the resignFirstResponser called?
#import "MySecureTextField.h"
#implementation MySecureTextField
- (id)initWithFrame:(NSRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code here.
}
return self;
}
- (void)drawRect:(NSRect)dirtyRect
{
// Drawing code here.
}
- (BOOL)becomeFirstResponder
{
NSLog(#"Get focus");
return [super becomeFirstResponder];
}
#end
I have a NSWindow which consist a NSView which appear only on some specific occasion this NSView consist a NSSearchField I want if there is data on clipboard it will appear in searchField otherwise it would be empty.I am able to do this what I want is if there is Data in SearchField it should be in focus I tried it this way:
In NSViewController class there is a function which returns NSSearchField which is a class variable
-(NSSearchField*)getSearchField
{
return searchField;
}
In NSWindowController class I am making it first responder where pSearchContact is instance variable of NSViewController class
[[self window] makefirstResponder:[pSearchContact getSearchField]];
It is running smoothly but I don't know why searchField is not getting focus
Is their something like searchField will become first responder only if it is a part of NSWindow because in my case searchField is in NSView which is in NSWindow.
Thanks in Advance
Your question is a little confusing but I think what you're asking to boils down to "why can't I ever make my search field the focus?".
That one line of code:
[[self window] makefirstResponder:[pSearchContact getSearchField]];
has a little too much going on with it for my comfort (i.e. I wouldn't embed so much functionality - any pieces of which could go wrong or haywire - into one line of code).
How about doing something like this:
NSWindow * myWindow = [self window];
if(myWindow)
{
if(pSearchContact)
{
NSResponder * ourSearchField = [pSearchContact getSearchField];
if(ourSearchField)
{
[myWindow makeFirstResponder: ourSearchField];
} else {
NSLog( #"ourSearchfield is nil; why?" );
}
} else {
NSLog( #"pSearchContact is nil; why?" );
}
} else {
NSLog( #"myWindow is nil; why?" );
}
This might also allow you to narrow down on why the focus setting isn't working for you.
A late response, but I was having a similar issue which was fixed by unchecking refusesFirstResponder in Xcode/Interface Builder.
I have some textfields and I want to do when I change textfield1 text set text to other textfields. My code below. But it not works. How can I solve this?
- (IBAction)TCKimlikTextChange:(id)sender {
[TCKimlikText addTarget:self action:#selector(yourMethod: ) forControlEvents:UIControlEventEditingChanged];
}
-(void)yourMethod: (UITextField*)tf_{
if (tf_) {
if (TCKimlikText.text == #"1") {
AdinizText.text = #"Hacer";
}
}
}
Your code is very abstract. yourMethod, tf_ TCKimlikTextChange are all expressions that are not very human readable. You should work on your variable names.
I suppose your first method is a button handler. It just assigned a target and action to the text field, but does not call any method. You do not need that action if you use the delegate protocol.
To solve your problem: implement the UITextField delegate methods. Make sure you set the delegate (probably self) for your text fields. Your view controller must mention the <UITextFieldDelegate> protocol in its .h file. Thus, in textField:shouldChangeCharactersInRange:replacementString::
if ([textField.text isEqualToString:#"1"]) {
displayLabel.text = #"Hacer";
}
Notice that you need isEqualToString: to compare strings, a simple == won't do.
If u are want to change on the click of the return button use the delegate
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
if(textField == field1)
[field2 setText:field1.text];
[field1 resignFirstResponder];
return YES;
}
or u can use other delegates too like:
– textFieldShouldBeginEditing:
– textFieldDidBeginEditing:
I have an NSSlider (slider) and an NSLabel (label) on a window. I also have a class "Controller" that updates the label whenever the slider's value is changed.
The default position of the slider is 0.5, I'm trying to get is where Controller's constructor updates the label upon program launch.
The following is the implementation file for my attempt to do this. Everything works fine except the label is always 0 when I start the program.
#implementation Controller
{
}
-(id)init
{
NSLog(#"initializing...");
[self updateLabel];
return self;
}
- (IBAction)sliderChanged:(id)sender
{
[self updateLabel];
}
- (void)updateLabel
{
label.text = [NSString stringWithFormat:#"%.1f", slider.value];
}
#end
In the console I see the text "initializing...", but the label is never updated. What am I missing?
The controller may be getting initialized (where is your call to [super init]?), but that doesn't mean the outlets are hooked up. The proper way to do that would be to rely on a viewDidLoad, windowDidLoad, or awakeFromNib method.
you should achieve this with bindings and without any "glue code" in controllers.
Here's some reference on how to use them: http://cocoadevcentral.com/articles/000080.php