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TITokenField.m
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//
// TITokenField.m
// TITokenField
//
// Created by Tom Irving on 16/02/2010.
// Copyright 2012 Tom Irving. All rights reserved.
//
#import "TITokenField.h"
#import "TIContact.h"
#import <QuartzCore/QuartzCore.h>
//==========================================================
#pragma mark - TITokenFieldView -
//==========================================================
@interface TITokenFieldView (Private)
- (void)setup;
- (NSString *)displayStringForRepresentedObject:(id)object;
- (NSString *)searchResultStringForRepresentedObject:(id)object;
- (void)setSearchResultsVisible:(BOOL)visible;
- (void)resultsForSearchString:(NSString *)searchString;
- (void)presentpopoverAtTokenFieldCaretAnimated:(BOOL)animated;
@end
@implementation TITokenFieldView
@dynamic delegate;
@synthesize showAlreadyTokenized;
@synthesize tokenField;
@synthesize resultsTable;
@synthesize contentView;
@synthesize separator;
@synthesize sourceArray;
@synthesize separatorColor = _separatorColor;
@synthesize separatorHeight = _separatorHeight;
#pragma mark Init
- (id)initWithFrame:(CGRect)frame {
if ((self = [super initWithFrame:frame])){
[self setup];
}
return self;
}
- (id)initWithCoder:(NSCoder *)aDecoder {
if ((self = [super initWithCoder:aDecoder])){
[self setup];
}
return self;
}
- (void)setup {
// Default separator height
_separatorHeight = 1.0;
[self setBackgroundColor:[UIColor clearColor]];
[self setDelaysContentTouches:YES];
[self setMultipleTouchEnabled:NO];
showAlreadyTokenized = NO;
resultsArray = [[NSMutableArray alloc] init];
tokenField = [[TITokenField alloc] initWithFrame:CGRectMake(0, 0, self.bounds.size.width, 42)];
[tokenField addTarget:self action:@selector(tokenFieldDidBeginEditing:) forControlEvents:UIControlEventEditingDidBegin];
[tokenField addTarget:self action:@selector(tokenFieldDidEndEditing:) forControlEvents:UIControlEventEditingDidEnd];
[tokenField addTarget:self action:@selector(tokenFieldTextDidChange:) forControlEvents:UIControlEventEditingChanged];
[tokenField addTarget:self action:@selector(tokenFieldFrameWillChange:) forControlEvents:TITokenFieldControlEventFrameWillChange];
[tokenField addTarget:self action:@selector(tokenFieldFrameDidChange:) forControlEvents:TITokenFieldControlEventFrameDidChange];
[tokenField setDelegate:self];
[self addSubview:tokenField];
CGFloat tokenFieldBottom = CGRectGetMaxY(tokenField.frame);
separator = [[UIView alloc] initWithFrame:CGRectMake(0, tokenFieldBottom, self.bounds.size.width, _separatorHeight)];
[separator setBackgroundColor:self.separatorColor];
[self addSubview:separator];
// This view is created for convenience, because it resizes and moves with the rest of the subviews.
contentView = [[UIView alloc] initWithFrame:CGRectMake(0, tokenFieldBottom + _separatorHeight, self.bounds.size.width,
self.bounds.size.height - tokenFieldBottom - _separatorHeight)];
[contentView setBackgroundColor:[UIColor clearColor]];
[self addSubview:contentView];
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad){
UITableViewController * tableViewController = [[UITableViewController alloc] initWithStyle:UITableViewStylePlain];
[tableViewController.tableView setDelegate:self];
[tableViewController.tableView setDataSource:self];
[tableViewController setContentSizeForViewInPopover:CGSizeMake(400, 400)];
resultsTable = tableViewController.tableView;
popoverController = [[UIPopoverController alloc] initWithContentViewController:tableViewController];
}
else
{
resultsTable = [[UITableView alloc] initWithFrame:CGRectMake(0, tokenFieldBottom + _separatorHeight, self.bounds.size.width, 10)];
[resultsTable setSeparatorColor:[UIColor colorWithWhite:0.85 alpha:1]];
[resultsTable setBackgroundColor:[UIColor colorWithRed:0.92 green:0.92 blue:0.92 alpha:1]];
[resultsTable setDelegate:self];
[resultsTable setDataSource:self];
[resultsTable setHidden:YES];
[self addSubview:resultsTable];
popoverController = nil;
}
[self bringSubviewToFront:separator];
[self bringSubviewToFront:tokenField];
[self updateContentSize];
}
#pragma mark - Separator customization
- (UIColor *)separatorColor
{
if (!_separatorColor)
{
_separatorColor = [UIColor colorWithWhite:0.7 alpha:1];
}
return _separatorColor;
}
- (void)setSeparatorColor:(UIColor *)separatorColor
{
if (_separatorColor != separatorColor)
{
_separatorColor = separatorColor;
self.separator.backgroundColor = separatorColor;
[self setNeedsDisplay];
}
}
- (void)setSeparatorHeight:(CGFloat)separatorHeight
{
if (_separatorHeight != separatorHeight)
{
_separatorHeight = separatorHeight;
CGRect frame = self.separator.frame;
frame.size.height = separatorHeight;
self.separator.frame = frame;
[self setNeedsLayout];
}
}
#pragma mark Property Overrides
- (void)setFrame:(CGRect)frame {
[super setFrame:frame];
CGFloat width = frame.size.width;
[separator setFrame:((CGRect){separator.frame.origin, {width, separator.bounds.size.height}})];
[resultsTable setFrame:((CGRect){resultsTable.frame.origin, {width, resultsTable.bounds.size.height}})];
[contentView setFrame:((CGRect){contentView.frame.origin, {width, (frame.size.height - CGRectGetMaxY(tokenField.frame) - self.separatorHeight)}})];
[tokenField setFrame:((CGRect){tokenField.frame.origin, {width, tokenField.bounds.size.height}})];
if (popoverController.popoverVisible){
[popoverController dismissPopoverAnimated:NO];
[self presentpopoverAtTokenFieldCaretAnimated:NO];
}
[self updateContentSize];
[self layoutSubviews];
}
- (void)setContentOffset:(CGPoint)offset {
[super setContentOffset:offset];
[self layoutSubviews];
}
- (NSArray *)tokenTitles {
return tokenField.tokenTitles;
}
#pragma mark Event Handling
- (void)layoutSubviews {
[super layoutSubviews];
CGFloat relativeFieldHeight = CGRectGetMaxY(tokenField.frame) - self.contentOffset.y;
CGFloat newHeight = self.bounds.size.height - relativeFieldHeight;
if (newHeight > -1) [resultsTable setFrame:((CGRect){resultsTable.frame.origin, {resultsTable.bounds.size.width, newHeight}})];
}
- (void)updateContentSize {
[self setContentSize:CGSizeMake(self.bounds.size.width, CGRectGetMaxY(contentView.frame) + self.separatorHeight)];
}
- (BOOL)canBecomeFirstResponder {
return NO;
}
#pragma mark TableView Methods
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
if ([tokenField.delegate respondsToSelector:@selector(tokenField:resultsTableView:heightForRowAtIndexPath:)]){
return [tokenField.delegate tokenField:tokenField resultsTableView:tableView heightForRowAtIndexPath:indexPath];
}
return 44;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if ([tokenField.delegate respondsToSelector:@selector(tokenField:didFinishSearch:)]){
[tokenField.delegate tokenField:tokenField didFinishSearch:resultsArray];
}
return resultsArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
id representedObject = [resultsArray objectAtIndex:indexPath.row];
if ([tokenField.delegate respondsToSelector:@selector(tokenField:resultsTableView:cellForRepresentedObject:)]){
return [tokenField.delegate tokenField:tokenField resultsTableView:tableView cellForRepresentedObject:representedObject];
}
static NSString * CellIdentifier = @"ResultsCell";
UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
NSString *subtitle = [self searchResultSubtitleForRepresentedObject:representedObject];
if (!cell) {
if(subtitle) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
} else {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
}
cell.detailTextLabel.text = subtitle;
[cell.textLabel setText:[self searchResultStringForRepresentedObject:representedObject]];
[cell.detailTextLabel setText:subtitle];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
id representedObject = [resultsArray objectAtIndex:indexPath.row];
TIToken * token = [[TIToken alloc] initWithTitle:[self displayStringForRepresentedObject:representedObject] representedObject:representedObject];
[tokenField addToken:token];
[tableView deselectRowAtIndexPath:indexPath animated:YES];
[self setSearchResultsVisible:NO];
}
#pragma mark TextField Methods
- (void)tokenFieldDidBeginEditing:(TITokenField *)field {
[resultsArray removeAllObjects];
[resultsTable reloadData];
}
- (void)tokenFieldDidEndEditing:(TITokenField *)field {
[self tokenFieldDidBeginEditing:field];
}
- (void)tokenFieldTextDidChange:(TITokenField *)field {
[self resultsForSearchString:field.text];
}
- (void)tokenFieldFrameWillChange:(TITokenField *)field {
CGFloat tokenFieldBottom = CGRectGetMaxY(tokenField.frame);
[separator setFrame:((CGRect){{separator.frame.origin.x, tokenFieldBottom}, separator.bounds.size})];
[resultsTable setFrame:((CGRect){{resultsTable.frame.origin.x, (tokenFieldBottom + self.separatorHeight)}, resultsTable.bounds.size})];
[contentView setFrame:((CGRect){{contentView.frame.origin.x, (tokenFieldBottom + self.separatorHeight)}, contentView.bounds.size})];
}
- (void)tokenFieldFrameDidChange:(TITokenField *)field {
[self updateContentSize];
}
#pragma mark Results Methods
- (NSString *)displayStringForRepresentedObject:(id)object {
if ([tokenField.delegate respondsToSelector:@selector(tokenField:displayStringForRepresentedObject:)]){
return [tokenField.delegate tokenField:tokenField displayStringForRepresentedObject:object];
}
if ([object isKindOfClass:[NSString class]]){
return (NSString *)object;
}
return [NSString stringWithFormat:@"%@", object];
}
- (NSString *)searchResultStringForRepresentedObject:(id)object {
if ([tokenField.delegate respondsToSelector:@selector(tokenField:searchResultStringForRepresentedObject:)]){
return [tokenField.delegate tokenField:tokenField searchResultStringForRepresentedObject:object];
}
return [self displayStringForRepresentedObject:object];
}
- (NSString *)searchResultSubtitleForRepresentedObject:(id)object {
if ([tokenField.delegate respondsToSelector:@selector(tokenField:searchResultSubtitleForRepresentedObject:)]){
return [tokenField.delegate tokenField:tokenField searchResultSubtitleForRepresentedObject:object];
}
return nil;
}
- (void)setSearchResultsVisible:(BOOL)visible {
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad){
if (visible) [self presentpopoverAtTokenFieldCaretAnimated:YES];
else [popoverController dismissPopoverAnimated:YES];
}
else
{
[resultsTable setHidden:!visible];
[tokenField setResultsModeEnabled:visible];
}
}
- (void)resultsForSearchString:(NSString *)searchString {
// The brute force searching method.
// Takes the input string and compares it against everything in the source array.
// If the source is massive, this could take some time.
// You could always subclass and override this if needed or do it on a background thread.
// GCD would be great for that.
[resultsArray removeAllObjects];
[resultsTable reloadData];
[sourceArray enumerateObjectsUsingBlock:^(id sourceObject, NSUInteger idx, BOOL *stop){
NSString * query = [self searchResultStringForRepresentedObject:sourceObject];
NSString * querySubtitle = [self searchResultSubtitleForRepresentedObject:sourceObject];
if ([query rangeOfString:searchString options:NSCaseInsensitiveSearch].location != NSNotFound || (querySubtitle && [querySubtitle rangeOfString:searchString options:NSCaseInsensitiveSearch].location != NSNotFound)){
__block BOOL shouldAdd = ![resultsArray containsObject:sourceObject];
if (shouldAdd && !showAlreadyTokenized){
[tokenField.tokens enumerateObjectsUsingBlock:^(TIToken * token, NSUInteger idx, BOOL *secondStop){
if ([token.representedObject isEqual:sourceObject]){
shouldAdd = NO;
*secondStop = YES;
}
}];
}
if (shouldAdd) [resultsArray addObject:sourceObject];
}
}];
[resultsArray sortUsingComparator:^NSComparisonResult(id obj1, id obj2) {
return [[self searchResultStringForRepresentedObject:obj1] localizedCaseInsensitiveCompare:[self searchResultStringForRepresentedObject:obj2]];
}];
[resultsTable reloadData];
[self setSearchResultsVisible:(resultsArray.count > 0)];
}
- (void)presentpopoverAtTokenFieldCaretAnimated:(BOOL)animated {
UITextPosition * position = [tokenField positionFromPosition:tokenField.beginningOfDocument offset:2];
[popoverController presentPopoverFromRect:[tokenField caretRectForPosition:position] inView:tokenField
permittedArrowDirections:UIPopoverArrowDirectionUp animated:animated];
}
#pragma mark Other
- (NSString *)description {
return [NSString stringWithFormat:@"<TITokenFieldView %p; Token count = %d>", self, self.tokenTitles.count];
}
- (void)dealloc {
[self setDelegate:nil];
}
@end
//==========================================================
#pragma mark - TITokenField -
//==========================================================
NSString * const kTextEmpty = @"\u200B"; // Zero-Width Space
NSString * const kTextHidden = @"\u200D"; // Zero-Width Joiner
@interface TITokenFieldInternalDelegate ()
@property (nonatomic, weak) id <UITextFieldDelegate> delegate;
@property (nonatomic, weak) TITokenField * tokenField;
@end
@interface TITokenField ()
@property (nonatomic, readonly) CGFloat leftViewWidth;
@property (nonatomic, readonly) CGFloat rightViewWidth;
@property (nonatomic, readonly) UIScrollView * scrollView;
@end
@interface TITokenField (Private)
- (void)setup;
- (CGFloat)layoutTokensInternal;
@end
@implementation TITokenField
@synthesize delegate;
@synthesize tokens;
@synthesize editable;
@synthesize resultsModeEnabled;
@synthesize removesTokensOnEndEditing;
@synthesize numberOfLines;
@synthesize selectedToken;
@synthesize tokenizingCharacters;
#pragma mark Init
- (id)initWithFrame:(CGRect)frame {
if ((self = [super initWithFrame:frame])){
[self setup];
}
return self;
}
- (id)initWithCoder:(NSCoder *)aDecoder {
if ((self = [super initWithCoder:aDecoder])){
[self setup];
}
return self;
}
- (void)setup {
_visible = YES;
_animationsEnabled = YES;
[self setBorderStyle:UITextBorderStyleNone];
[self setFont:[UIFont systemFontOfSize:14]];
[self setBackgroundColor:[UIColor whiteColor]];
[self setAutocorrectionType:UITextAutocorrectionTypeNo];
[self setAutocapitalizationType:UITextAutocapitalizationTypeNone];
[self addTarget:self action:@selector(didBeginEditing) forControlEvents:UIControlEventEditingDidBegin];
[self addTarget:self action:@selector(didEndEditing) forControlEvents:UIControlEventEditingDidEnd];
[self addTarget:self action:@selector(didChangeText) forControlEvents:UIControlEventEditingChanged];
[self.layer setShadowColor:[[UIColor blackColor] CGColor]];
[self.layer setShadowOpacity:0.6];
[self.layer setShadowRadius:12];
[self setPromptText:@"To:"];
[self setText:kTextEmpty];
internalDelegate = [[TITokenFieldInternalDelegate alloc] init];
[internalDelegate setTokenField:self];
[super setDelegate:internalDelegate];
tokens = [[NSMutableArray alloc] init];
editable = YES;
removesTokensOnEndEditing = YES;
tokenizingCharacters = [NSCharacterSet characterSetWithCharactersInString:@","] ;
}
#pragma mark Property Overrides
- (void)setFrame:(CGRect)frame {
[super setFrame:frame];
[self.layer setShadowPath:[[UIBezierPath bezierPathWithRect:self.bounds] CGPath]];
[self layoutTokensAnimated:NO];
}
- (void)setText:(NSString *)text {
[super setText:(text.length == 0 ? kTextEmpty : text)];
}
- (void)setFont:(UIFont *)font {
[super setFont:font];
if ([self.leftView isKindOfClass:[UILabel class]]){
[self setPromptText:((UILabel *)self.leftView).text];
}
}
- (void)setDelegate:(id<TITokenFieldDelegate>)del {
delegate = del;
[internalDelegate setDelegate:delegate];
}
- (NSArray *)tokens {
return [tokens copy];
}
- (NSArray *)tokenTitles {
NSMutableArray * titles = [[NSMutableArray alloc] init];
[tokens enumerateObjectsUsingBlock:^(TIToken * token, NSUInteger idx, BOOL *stop){[titles addObject:token.title];}];
return titles;
}
- (NSArray *)tokenObjects {
NSMutableArray * objects = [[NSMutableArray alloc] init];
[tokens enumerateObjectsUsingBlock:^(TIToken * token, NSUInteger idx, BOOL *stop){
[objects addObject:(token.representedObject ? token.representedObject : token.title)];
}];
return objects;
}
- (UIScrollView *)scrollView {
return ([self.superview isKindOfClass:[UIScrollView class]] ? (UIScrollView *)self.superview : nil);
}
#pragma mark Event Handling
- (BOOL)becomeFirstResponder {
return (editable ? [super becomeFirstResponder] : NO);
}
- (void)didBeginEditing {
[tokens enumerateObjectsUsingBlock:^(TIToken * token, NSUInteger idx, BOOL *stop){[self addToken:token];}];
}
- (void)didEndEditing {
[selectedToken setSelected:NO];
selectedToken = nil;
[self tokenizeText];
if (removesTokensOnEndEditing){
[tokens enumerateObjectsUsingBlock:^(TIToken * token, NSUInteger idx, BOOL *stop){[token removeFromSuperview];}];
NSString * untokenized = kTextEmpty;
if (tokens.count){
NSMutableArray * titles = [[NSMutableArray alloc] init];
[tokens enumerateObjectsUsingBlock:^(TIToken * token, NSUInteger idx, BOOL *stop){[titles addObject:token.title];}];
untokenized = [self.tokenTitles componentsJoinedByString:@", "];
CGSize untokSize = [untokenized sizeWithFont:[UIFont systemFontOfSize:14]];
CGFloat availableWidth = self.bounds.size.width - self.leftView.bounds.size.width - self.rightView.bounds.size.width;
if (tokens.count > 1 && untokSize.width > availableWidth){
untokenized = [NSString stringWithFormat:@"%d recipients", titles.count];
}
}
[self setText:untokenized];
}
[self setResultsModeEnabled:NO];
}
- (void)didChangeText {
if (self.text.length == 0) [self setText:kTextEmpty];
}
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender
{
BOOL isActuallyEmpty = [self.text isEqualToString:kTextEmpty];
BOOL hasSelection = !self.selectedTextRange.isEmpty;
if (action == @selector(cut:))
{
return !isActuallyEmpty && hasSelection;
}
else if (action == @selector(copy:))
{
return !isActuallyEmpty && hasSelection;
}
else if (action == @selector(select:))
{
return !isActuallyEmpty && !hasSelection;
}
else if (action == @selector(selectAll:))
{
return !isActuallyEmpty && !hasSelection;
}
return [super canPerformAction:action withSender:sender];
}
- (BOOL)beginTrackingWithTouch:(UITouch *)touch withEvent:(UIEvent *)event {
if (selectedToken && touch.view == self) [self deselectSelectedToken];
return [super beginTrackingWithTouch:touch withEvent:event];
}
#pragma mark Token Handling
- (TIToken *)addTokenWithTitle:(NSString *)title {
return [self addTokenWithTitle:title representedObject:nil];
}
- (TIToken *)addTokenWithTitle:(NSString *)title representedObject:(id)object {
if (title.length){
TIToken * token = [[TIToken alloc] initWithTitle:title representedObject:object font:self.font];
// If we're requested to use a specific tintColor for tokens added
// to this field, use it
if (self.tintColor)
token.tintColor = self.tintColor;
[self addToken:token];
return token;
}
return nil;
}
- (void)addToken:(TIToken *)token {
// Untokenize the field if we're not the first responder
[self addToken:token untokenizeAfterAdding:![self isFirstResponder]];
}
- (void)addToken:(TIToken *)token untokenizeAfterAdding:(BOOL)untokenize
{
BOOL shouldAdd = YES;
if ([delegate respondsToSelector:@selector(tokenField:willAddToken:)]){
shouldAdd = [delegate tokenField:self willAddToken:token];
}
if (shouldAdd)
{
[token addTarget:self action:@selector(tokenTouchDown:) forControlEvents:UIControlEventTouchDown];
[token addTarget:self action:@selector(tokenTouchUpInside:) forControlEvents:UIControlEventTouchUpInside];
[self addSubview:token];
if (![tokens containsObject:token]) [tokens addObject:token];
if ([delegate respondsToSelector:@selector(tokenField:didAddToken:)]){
[delegate tokenField:self didAddToken:token];
}
[self setResultsModeEnabled:NO];
[self deselectSelectedToken];
}
if (untokenize)
[self didEndEditing];
}
- (void)addTokens:(NSArray *)tokensArray
{
for (TIToken *token in tokensArray)
{
[self addToken:token untokenizeAfterAdding:NO];
}
if (![self isFirstResponder])
[self didEndEditing];
}
- (void)removeToken:(TIToken *)token {
if (token == selectedToken) [self deselectSelectedToken];
BOOL shouldRemove = YES;
if ([delegate respondsToSelector:@selector(tokenField:willRemoveToken:)]){
shouldRemove = [delegate tokenField:self willRemoveToken:token];
}
if (shouldRemove){
[token removeFromSuperview];
[tokens removeObject:token];
if ([delegate respondsToSelector:@selector(tokenField:didRemoveToken:)]){
[delegate tokenField:self didRemoveToken:token];
}
[self setResultsModeEnabled:NO];
}
}
- (void)removeAllTokens {
[tokens enumerateObjectsWithOptions:NSEnumerationReverse usingBlock:^(TIToken * token, NSUInteger idx, BOOL *stop) {
[self removeToken:token];
}];
[self setText:@""];
}
- (void)selectToken:(TIToken *)token {
[self deselectSelectedToken];
selectedToken = token;
[selectedToken setSelected:YES];
[self becomeFirstResponder];
[self setText:kTextHidden];
}
- (void)deselectSelectedToken {
[selectedToken setSelected:NO];
selectedToken = nil;
[self setText:kTextEmpty];
}
- (void)tokenizeText {
__block BOOL textChanged = NO;
if (![self.text isEqualToString:kTextEmpty] && ![self.text isEqualToString:kTextHidden]){
[[self.text componentsSeparatedByCharactersInSet:tokenizingCharacters] enumerateObjectsUsingBlock:^(NSString * component, NSUInteger idx, BOOL *stop){
[self addTokenWithTitle:[component stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]];
textChanged = YES;
}];
}
if (textChanged) [self sendActionsForControlEvents:UIControlEventEditingChanged];
}
- (NSArray*)getTokens {
NSMutableArray* result = [[NSMutableArray alloc] init];
for (TIToken* token in tokens) {
TIContact* contact = (TIContact*)token.representedObject;
[result addObject:contact];
}
return result;
}
- (void)tokenTouchDown:(TIToken *)token {
if (selectedToken != token){
[selectedToken setSelected:NO];
selectedToken = nil;
}
}
- (void)tokenTouchUpInside:(TIToken *)token {
if ([delegate respondsToSelector:@selector(tokenField:didTouchUpOnToken:)]){
[delegate tokenField:self didTouchUpOnToken:token];
}
if (editable)
{
[self selectToken:token];
}
}
- (CGFloat)fontLineHeight {
if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_6_1) {
return self.font.lineHeight;
}
else return 18.0f;
}
- (CGFloat)layoutTokensInternal {
CGFloat topMargin = floor([self fontLineHeight] * 4 / 7);
CGFloat leftMargin = self.leftViewWidth + 12;
CGFloat hPadding = 12;
CGFloat rightMargin = self.rightViewWidth + hPadding;
CGFloat lineHeight = [self fontLineHeight] + topMargin + 5;
numberOfLines = 1;
tokenCaret = (CGPoint){leftMargin, (topMargin - 1)};
NSUInteger totalNumTokens = [tokens count];
// NSLog(@"self.bounds.size.width: %.2f / frame: %.2f / superview frame: %@", self.bounds.size.width, self.frame.size.width, NSStringFromCGRect(self.superview.bounds));
[tokens enumerateObjectsUsingBlock:^(TIToken * token, NSUInteger idx, BOOL *stop){
[token setFont:self.font];
[token setMaxWidth:(self.bounds.size.width - rightMargin - (numberOfLines > 1 ? hPadding : leftMargin))];
if (token.superview){
if (tokenCaret.x + token.bounds.size.width + rightMargin > self.bounds.size.width)
{
numberOfLines++;
tokenCaret.x = (numberOfLines > 1 ? hPadding : leftMargin);
tokenCaret.y += lineHeight;
}
[token setFrame:(CGRect){tokenCaret, token.bounds.size}];
tokenCaret.x += token.bounds.size.width + 4;
// NSLog(@"[%@] token (%@): %@ (tokenCaret.x: %.2f)", self.promptText, token.title, NSStringFromCGRect(token.frame), tokenCaret.x);
// If not editable, and this is the last token, we don't need to
// increase the numberOfLines further else we'll end up with one
// empty line
BOOL lastTokenAndNotEditable = (!self.editable && idx == totalNumTokens - 1);
BOOL shouldAdvanceCaret = !lastTokenAndNotEditable;
// if (lastTokenAndNotEditable)
// NSLog(@"token (%@) shouldn't increase numberOfLines", token.title);
if (/*shouldAdvanceCaret && */self.bounds.size.width - tokenCaret.x - rightMargin < 50)
{
// if (lastTokenAndNotEditable)
// NSLog(@"[%@] token (%@) shouldn't increase numberOfLines", self.promptText, token.title);
// NSLog(@"[%@] self.bounds.size.width - tokenCaret.x - rightMargin (%.2f)", self.promptText, self.bounds.size.width - tokenCaret.x - rightMargin);
if (shouldAdvanceCaret)
{
// NSLog(@"[%@] Advancing number of lines after token (%@)", self.promptText, token.title);
numberOfLines++;
tokenCaret.x = (numberOfLines > 1 ? hPadding : leftMargin);
tokenCaret.y += lineHeight;
}
}
}
}];
return tokenCaret.y + lineHeight;
}
#pragma mark -
- (void)setVisible:(BOOL)visible animated:(BOOL)animated
{
_visible = visible;
[self layoutTokensAnimated:animated];
}
- (void)setVisible:(BOOL)visible
{
[self setVisible:visible animated:YES];
}
#pragma mark View Handlers
- (void)layoutTokensAnimated:(BOOL)animated {
CGFloat newHeight = self.visible ? [self layoutTokensInternal] : 0;
// Don't animate if we're not the first responder. Weird animations of
// the text flying in
BOOL shouldAnimate = animated;
if (![self isFirstResponder])
shouldAnimate = NO;
// If animations are disabled for this field
if (!self.animationsEnabled)
shouldAnimate = NO;
if (self.bounds.size.height != newHeight)
{
// Animating this seems to invoke the triple-tap-delete-key-loop-problem-thing™
[UIView animateWithDuration:(shouldAnimate ? 0.3 : 0) animations:^{
[self setFrame:((CGRect){self.frame.origin, {self.bounds.size.width, newHeight}})];
[self sendActionsForControlEvents:TITokenFieldControlEventFrameWillChange];
} completion:^(BOOL complete){
[self sendActionsForControlEvents:TITokenFieldControlEventFrameDidChange];
}];
}
}
- (void)setResultsModeEnabled:(BOOL)flag {
[self setResultsModeEnabled:flag animated:YES];
}
- (void)setResultsModeEnabled:(BOOL)flag animated:(BOOL)animated {
[self layoutTokensAnimated:animated];
if (resultsModeEnabled != flag){
//Hide / show the shadow
[self.layer setMasksToBounds:!flag];
UIScrollView * scrollView = self.scrollView;
[scrollView setScrollsToTop:!flag];
[scrollView setScrollEnabled:!flag];
CGFloat offset = ((numberOfLines == 1 || !flag) ? 0 : tokenCaret.y - floor([self fontLineHeight] * 4 / 7) + 1);
[scrollView setContentOffset:CGPointMake(0, self.frame.origin.y + offset) animated:animated];
}
resultsModeEnabled = flag;
}
#pragma mark Left / Right view stuff
- (void)setPromptText:(NSString *)text {
_promptText = text;
if (text){
UILabel * label = (UILabel *)self.leftView;
if (!label || ![label isKindOfClass:[UILabel class]]){
label = [[UILabel alloc] initWithFrame:CGRectZero];
[label setTextColor:[UIColor colorWithWhite:0.5 alpha:1]];
[self setLeftView:label];
[self setLeftViewMode:UITextFieldViewModeAlways];
}
[label setText:text];
[label setFont:[UIFont systemFontOfSize:(self.font.pointSize + 1)]];
[label sizeToFit];
}
else
{
[self setLeftView:nil];
}
[self layoutTokensAnimated:YES];
}
#pragma mark - Accessory view
- (void)didTapOnAccessoryView:(id)view
{
if ([self.delegate respondsToSelector:@selector(tokenField:didTapOnAccessoryButton:)])
{
[self.delegate tokenField:self didTapOnAccessoryButton:view];
}
}
#pragma mark Layout
- (CGRect)textRectForBounds:(CGRect)bounds {
if ([self.text isEqualToString:kTextHidden]) return CGRectMake(0, -20, 0, 0);
CGRect frame = CGRectOffset(bounds, tokenCaret.x + 2, tokenCaret.y + 3);
frame.size.width -= (tokenCaret.x + self.rightViewWidth + 10);
if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_6_1) {}
else
{
// temporary fix for iOS 7
frame.origin.y -= (10 + self.numberOfLines)*self.numberOfLines;
}
return frame;
}
- (CGRect)editingRectForBounds:(CGRect)bounds {
return [self textRectForBounds:bounds];
}
- (CGRect)placeholderRectForBounds:(CGRect)bounds {
return [self textRectForBounds:bounds];
}
- (CGRect)leftViewRectForBounds:(CGRect)bounds {
return ((CGRect){{8, ceilf([self fontLineHeight] * 4 / 7)}, self.leftView.bounds.size});
}
- (CGRect)rightViewRectForBounds:(CGRect)bounds
{
CGFloat padding = 6 + (self.font.pointSize - 14);
CGRect rect;
CGRect rightViewBounds = CGRectMake(0, 0, 29.0f, 29.0f);
self.rightView.bounds = rightViewBounds;
// Editable accessory view, keep it to the bottom of the cell.
// Useful for add contact button
if (self.editable)
{
rect =
CGRectMake(bounds.size.width - self.rightView.bounds.size.width - padding,
bounds.size.height - self.rightView.bounds.size.height - padding,
self.rightView.bounds.size.width,
self.rightView.bounds.size.height);
}
// Non-editable accessory view, keep it to aligned to the vertical center
// Useful for things like 'Hide' button
else
{
rect =
CGRectMake(bounds.size.width - self.rightView.bounds.size.width - padding,
(bounds.size.height - self.rightView.bounds.size.height) / 2,
self.rightView.bounds.size.width,
self.rightView.bounds.size.height);
}
return CGRectIntegral(rect);
}
- (CGFloat)leftViewWidth {