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DOAutocompleteTextField.m
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DOAutocompleteTextField.m
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/*
* Copyright 2011 DoAT. All rights reserved.
*
* Updated by Iain Stubbs 2012 for use in QAutoEntryElement
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY DoAT “AS IS” WITHOUT ANY WARRANTIES WHATSOEVER.
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF NON INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL DoAT OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of
* the authors and should not be interpreted as representing official policies,
* either expressed or implied, of DoAT.
*/
#import "DOAutocompleteTextField.h"
#import "NSMutableArray+IMSExtensions.h"
@interface DOAutocompleteTextField (Private)
- (void)setupSubviews;
- (void)_textDidChange:(NSNotification*)notification;
- (void)_updateAutocompleteLabel;
@end
@implementation DOAutocompleteTextField
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self)
{
[self setupSubviews];
}
return self;
}
- (void)awakeFromNib
{
[self setupSubviews];
}
- (void)setupSubviews
{
_autocompleteLabel = [[UILabel alloc] initWithFrame:CGRectZero];
_autocompleteLabel.font = self.font;
_autocompleteLabel.backgroundColor = [UIColor clearColor];
_autocompleteLabel.textColor = [UIColor lightGrayColor];
_autocompleteLabel.lineBreakMode = UILineBreakModeClip;
[self addSubview:_autocompleteLabel];
[self bringSubviewToFront:_autocompleteLabel];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_textDidChange:) name:UITextFieldTextDidChangeNotification object:self];
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self name:UITextFieldTextDidChangeNotification object:self];
}
- (BOOL)becomeFirstResponder
{
if ([self clearsOnBeginEditing])
{
_autocompleteLabel.text = @"";
}
_autocompleteLabel.hidden = NO;
return [super becomeFirstResponder];
}
- (BOOL)resignFirstResponder
{
_autocompleteLabel.hidden = YES;
return [super resignFirstResponder];
}
- (void)setFont:(UIFont *)font
{
[super setFont:font];
[_autocompleteLabel setFont:font];
}
- (CGRect)autocompleteRectForBounds:(CGRect)bounds
{
CGRect returnRect = CGRectZero;
CGRect textRect = [self textRectForBounds:self.bounds];
// NSLog(@"textRect: %@", NSStringFromCGRect(textRect));
CGSize prefixTextSize = [self.text sizeWithFont:self.font
constrainedToSize:textRect.size
lineBreakMode:UILineBreakModeCharacterWrap];
// NSLog(@"prefixTextSize: %@", NSStringFromCGSize(prefixTextSize));
CGSize autocompleteTextSize = [_autoCompleteString sizeWithFont:self.font
constrainedToSize:CGSizeMake(textRect.size.width-prefixTextSize.width, textRect.size.height)
lineBreakMode:UILineBreakModeCharacterWrap];
// NSLog(@"autocompleteTextSize: %@", NSStringFromCGSize(autocompleteTextSize));
returnRect = CGRectMake(textRect.origin.x + prefixTextSize.width,
textRect.origin.y,//+.5,
autocompleteTextSize.width,
textRect.size.height);
return returnRect;
}
- (void)setAutocompleteTextColor:(UIColor*)color
{
_autocompleteLabel.textColor = color;
}
- (UIColor*)autocompleteTextColor
{
return _autocompleteLabel.textColor;
}
- (void)_textDidChange:(NSNotification*)notification
{
if ([((id<DOAutocompleteTextFieldDelegate>)self.delegate) respondsToSelector:@selector(textField:completionForPrefix:)] )
{
_autoCompleteString = [((id<DOAutocompleteTextFieldDelegate>)self.delegate) textField:self completionForPrefix:self.text];
[self _updateAutocompleteLabel];
}
}
- (void)_updateAutocompleteLabel
{
[_autocompleteLabel setText:_autoCompleteString];
[_autocompleteLabel sizeToFit];
[_autocompleteLabel setFrame: [self autocompleteRectForBounds:self.bounds]];
}
- (NSString*)getAutoCompleteText
{
NSMutableArray *ac = [NSMutableArray arrayWithObjects:self.text,_autoCompleteString, nil];
return [ac concatStrings];
}
- (void)setAutoCompletes:(NSArray*)autoCompletes
{
_autoCompletes = autoCompletes;
}
- (NSArray*)getAutoCompletes
{
return _autoCompletes;
}
@end