Autocomplete word as you are typing
-
I am trying to figure out how I would go about doing an autocompletion
of a word as you are typing. I am trying to do something like any
autocomplete done on the web where you start typing in your
information and if there is a 1 to 1 match against a list it suggests
a completion to the word. I know there is the
"textView:completions:forPartialWordRange:indexOfSelectedItem:"
delegate method, but I want something that will happen as the person
types without hitting the escape key.
Does anyone have any examples, advice, delegate methods to look at.
Thanks in advance -
On Feb 6, 2008, at 10:50 PM, Chris Schmitt wrote:> I am trying to figure out how I would go about doing an
> autocompletion of a word as you are typing. I am trying to do
> something like any autocomplete done on the web where you start
> typing in your information and if there is a 1 to 1 match against a
> list it suggests a completion to the word. I know there is the
> "textView:completions:forPartialWordRange:indexOfSelectedItem:"
> delegate method, but I want something that will happen as the
> person types without hitting the escape key.
>
>
> Does anyone have any examples, advice, delegate methods to look at.
Maybe something like this (not tested, just wrote it in Mail):
[[NSNotificationCenter defaultNotificationCenter] addObserver:self
selector:@selector(controlTextDidChange:)
name: NSControlTextDidChangeNotification
object: myTextControl];
[NSNotificationCenter defaultNotificationCenter] addObserver:self
selector:@selector(controlTextDidEnd:)
name: NSControlTextDidEndEditingNotification
object: myTextControl];
...
- (void) controlTextDidChange:(NSNotification *) inNotification
{
[NSObject cancelPreviousPerformRequestsWithTarget:self];
[NSObject performSelector:@selector(myCompletionRoutine:)
withObject: [[inNotification userInfo] objectForKey:@"NSFieldEditor"]
afterDelay:1.0f];
}
- (void) controlTextDidEnd:(NSNotification *) inNotification
{
[NSObject cancelPreviousPerformRequestsWithTarget:self];
}
- (void) myCompletionRoutine:(NSTextFieldCell *) inTextFieldCell
{
// Do your completion
} -
> I know there is the
> "textView:completions:forPartialWordRange:indexOfSelectedItem:"
> delegate method, but I want something that will happen as the person
> types without hitting the escape key.
I did something similar in the following way:
First I subclassed an NSTextField and overrode its keyUp method like so:
-(void)keyUp:(NSEvent *)event{
int keyCode = [event.characters characterAtIndex:0];
if (keyCode != 13 && keyCode != 9 && keyCode != 127 && keyCode !
= NSLeftArrowFunctionKey && keyCode != NSRightArrowFunctionKey) {
[self.currentEditor complete:self];
}
[super keyUp:event];
}
The if block checks to make sure that the key pressed is not
backspace, delete, an arrow key, or any of that stuff that you really
don't want completion to happen after, then calls complete: on its
field editor (this is, as far as I know, equivalent to pressing ESC).
If you want to complete using the default dictionary words, that
should be all you have to do. If, however, you want to suggest your
own words, you should also override
textView:completions:forPartialWordRange:indexOfSelectedItem: to
return something useful. See:
o http://tinyurl.com/3xrdhf
o http://tinyurl.com/3xrdhf
o http://tinyurl.com/3xrdhf
Cheers,
-Joshua Emmons -
On 2008/02/07, at 6:50, Chris Schmitt wrote:> I am trying to figure out how I would go about doing an
> autocompletion of a word as you are typing. I am trying to do
> something like any autocomplete done on the web where you start
> typing in your information and if there is a 1 to 1 match against a
> list it suggests a completion to the word. I know there is the
> "textView:completions:forPartialWordRange:indexOfSelectedItem:"
> delegate method, but I want something that will happen as the
> person types without hitting the escape key.
> Does anyone have any examples, advice, delegate methods to look at.
Invoke [yourTextView completion:nil] somewhere in your code.
Also you can find a sample code written by Douglas Davidson in
CocoaBuilder archive.
http://www.cocoabuilder.com/archive/message/cocoa/2005/7/18/142172
Satoshi
-----------------------------------------------------
Satoshi Matsumoto <satoshi...>
816-5 Odake, Odawara, Kanagawa, Japan 256-0802 -
Sorry, I mistook the method name.
On 2008/02/07, at 6:50, Chris Schmitt wrote:> I am trying to figure out how I would go about doing an
> autocompletion of a word as you are typing. I am trying to do
> something like any autocomplete done on the web where you start
> typing in your information and if there is a 1 to 1 match against a
> list it suggests a completion to the word. I know there is the
> "textView:completions:forPartialWordRange:indexOfSelectedItem:"
> delegate method, but I want something that will happen as the
> person types without hitting the escape key.
> Does anyone have any examples, advice, delegate methods to look at.
Invoke [yourTextView complete:nil] somewhere in your code.
Also you can find a sample code written by Douglas Davidson in
CocoaBuilder archive.
http://www.cocoabuilder.com/archive/message/cocoa/2005/7/18/142172
Satoshi
-----------------------------------------------------
Satoshi Matsumoto <satoshi...>
816-5 Odake, Odawara, Kanagawa, Japan 256-0802
