3737
3838@implementation PFLogInView
3939
40- #pragma mark -
41- #pragma mark Class
40+ // /--------------------------------------
41+ #pragma mark - Class
42+ // /--------------------------------------
4243
4344+ (PFActionButtonConfiguration *)_defaultSignUpButtonConfiguration {
4445 PFActionButtonConfiguration *configuration = [[PFActionButtonConfiguration alloc ] initWithBackgroundImageColor: [PFColor signupButtonBackgroundColor ]
@@ -76,8 +77,9 @@ + (PFActionButtonConfiguration *)_defaultTwitterButtonConfiguration {
7677 return configuration;
7778}
7879
79- #pragma mark -
80- #pragma mark Init
80+ // /--------------------------------------
81+ #pragma mark - Init
82+ // /--------------------------------------
8183
8284- (instancetype )initWithFields : (PFLogInFields)otherFields {
8385 self = [super initWithFrame: CGRectZero ];
@@ -94,67 +96,116 @@ - (instancetype)initWithFields:(PFLogInFields)otherFields {
9496 _logo.contentMode = UIViewContentModeScaleAspectFit;
9597 [self addSubview: _logo];
9698
99+ [self _updateAllFields ];
100+
101+ return self;
102+ }
103+
104+ // /--------------------------------------
105+ #pragma mark - Fields
106+ // /--------------------------------------
107+
108+ - (void )_updateAllFields {
97109 if (_fields & PFLogInFieldsDismissButton) {
98- _dismissButton = [[PFDismissButton alloc ] initWithFrame: CGRectZero ];
99- [self addSubview: _dismissButton];
110+ if (!_dismissButton) {
111+ _dismissButton = [[PFDismissButton alloc ] initWithFrame: CGRectZero ];
112+ [self addSubview: _dismissButton];
113+ }
114+ } else {
115+ [_dismissButton removeFromSuperview ];
116+ _dismissButton = nil ;
100117 }
101118
102119 if (_fields & PFLogInFieldsUsernameAndPassword) {
103- _usernameField = [[PFTextField alloc ] initWithFrame: CGRectZero
104- separatorStyle: (PFTextFieldSeparatorStyleTop |
105- PFTextFieldSeparatorStyleBottom)];
106- _usernameField.autocorrectionType = UITextAutocorrectionTypeNo;
107- _usernameField.autocapitalizationType = UITextAutocapitalizationTypeNone;
108- _usernameField.returnKeyType = UIReturnKeyNext;
109- [self addSubview: _usernameField];
110- [self _updateUsernameFieldStyle ];
120+ if (!_usernameField) {
121+ _usernameField = [[PFTextField alloc ] initWithFrame: CGRectZero
122+ separatorStyle: (PFTextFieldSeparatorStyleTop |
123+ PFTextFieldSeparatorStyleBottom)];
124+ _usernameField.autocorrectionType = UITextAutocorrectionTypeNo;
125+ _usernameField.autocapitalizationType = UITextAutocapitalizationTypeNone;
126+ _usernameField.returnKeyType = UIReturnKeyNext;
127+ [self addSubview: _usernameField];
128+ [self _updateUsernameFieldStyle ];
129+ }
111130
112- _passwordField = [[PFTextField alloc ] initWithFrame: CGRectZero
113- separatorStyle: PFTextFieldSeparatorStyleBottom];
114- _passwordField.placeholder = NSLocalizedString(@" Password" @" Password"
115- _passwordField.secureTextEntry = YES ;
116- _passwordField.autocorrectionType = UITextAutocorrectionTypeNo;
117- _passwordField.autocapitalizationType = UITextAutocapitalizationTypeNone;
118- _passwordField.returnKeyType = UIReturnKeyDone;
119- [self addSubview: _passwordField];
131+ if (!_passwordField) {
132+ _passwordField = [[PFTextField alloc ] initWithFrame: CGRectZero
133+ separatorStyle: PFTextFieldSeparatorStyleBottom];
134+ _passwordField.placeholder = NSLocalizedString(@" Password" @" Password"
135+ _passwordField.secureTextEntry = YES ;
136+ _passwordField.autocorrectionType = UITextAutocorrectionTypeNo;
137+ _passwordField.autocapitalizationType = UITextAutocapitalizationTypeNone;
138+ _passwordField.returnKeyType = UIReturnKeyDone;
139+ [self addSubview: _passwordField];
140+ }
141+ } else {
142+ [_usernameField removeFromSuperview ];
143+ _usernameField = nil ;
144+
145+ [_passwordField removeFromSuperview ];
146+ _passwordField = nil ;
120147 }
121148
122149 if (_fields & PFLogInFieldsSignUpButton) {
123- _signUpButton = [[PFActionButton alloc ] initWithConfiguration: [[self class ] _defaultSignUpButtonConfiguration ]
124- buttonStyle: PFActionButtonStyleNormal];
125- [self addSubview: _signUpButton];
150+ if (!_signUpButton) {
151+ _signUpButton = [[PFActionButton alloc ] initWithConfiguration: [[self class ] _defaultSignUpButtonConfiguration ]
152+ buttonStyle: PFActionButtonStyleNormal];
153+ [self addSubview: _signUpButton];
154+ }
155+ } else {
156+ [_signUpButton removeFromSuperview ];
157+ _signUpButton = nil ;
126158 }
127159
128160 if (_fields & PFLogInFieldsPasswordForgotten) {
129- _passwordForgottenButton = [[PFTextButton alloc ] initWithFrame: CGRectZero ];
130- [_passwordForgottenButton setTitle: NSLocalizedString(@" Forgot Password?" " Forgot Password?"
131- forState: UIControlStateNormal];
132- [self addSubview: _passwordForgottenButton];
161+ if (_passwordForgottenButton) {
162+ _passwordForgottenButton = [[PFTextButton alloc ] initWithFrame: CGRectZero ];
163+ [_passwordForgottenButton setTitle: NSLocalizedString(@" Forgot Password?" " Forgot Password?"
164+ forState: UIControlStateNormal];
165+ [self addSubview: _passwordForgottenButton];
166+ }
167+ } else {
168+ [_passwordForgottenButton removeFromSuperview ];
169+ _passwordForgottenButton = nil ;
133170 }
134171
135172 if (_fields & PFLogInFieldsLogInButton) {
136- _logInButton = [[PFPrimaryButton alloc ] initWithBackgroundImageColor: [PFColor loginButtonBackgroundColor ]];
137- [_logInButton setTitle: NSLocalizedString(@" Log In" @" Log In" forState: UIControlStateNormal];
138- [self addSubview: _logInButton];
173+ if (!_logInButton) {
174+ _logInButton = [[PFPrimaryButton alloc ] initWithBackgroundImageColor: [PFColor loginButtonBackgroundColor ]];
175+ [_logInButton setTitle: NSLocalizedString(@" Log In" @" Log In" forState: UIControlStateNormal];
176+ [self addSubview: _logInButton];
177+ }
178+ } else {
179+ [_logInButton removeFromSuperview ];
180+ _logInButton = nil ;
139181 }
140182
141183 if (_fields & PFLogInFieldsFacebook) {
142- _facebookButton = [[PFActionButton alloc ] initWithConfiguration: [[self class ] _defaultFacebookButtonConfiguration ]
143- buttonStyle: PFActionButtonStyleNormal];
144- [self addSubview: _facebookButton];
184+ if (!_facebookButton) {
185+ _facebookButton = [[PFActionButton alloc ] initWithConfiguration: [[self class ] _defaultFacebookButtonConfiguration ]
186+ buttonStyle: PFActionButtonStyleNormal];
187+ [self addSubview: _facebookButton];
188+ }
189+ } else {
190+ [_facebookButton removeFromSuperview ];
191+ _facebookButton = nil ;
145192 }
146193
147194 if (_fields & PFLogInFieldsTwitter) {
148- _twitterButton = [[PFActionButton alloc ] initWithConfiguration: [[self class ] _defaultTwitterButtonConfiguration ]
149- buttonStyle: PFActionButtonStyleNormal];
150- [self addSubview: _twitterButton];
195+ if (_twitterButton) {
196+ _twitterButton = [[PFActionButton alloc ] initWithConfiguration: [[self class ] _defaultTwitterButtonConfiguration ]
197+ buttonStyle: PFActionButtonStyleNormal];
198+ [self addSubview: _twitterButton];
199+ }
200+ } else {
201+ [_twitterButton removeFromSuperview ];
202+ _twitterButton = nil ;
151203 }
152-
153- return self;
154204}
155205
156- #pragma mark -
157- #pragma mark UIView
206+ // /--------------------------------------
207+ #pragma mark - UIView
208+ // /--------------------------------------
158209
159210- (void )layoutSubviews {
160211 [super layoutSubviews ];
@@ -285,8 +336,7 @@ - (void)layoutSubviews {
285336 if (_logInButton) {
286337 CGFloat loginButtonTopInset = floorf (24 .0f * contentSizeScale.height );
287338
288- CGRect frame = PFRectMakeWithSizeCenteredInRect ([_logInButton sizeThatFits: loginContentSize],
289- loginContentRect);;
339+ CGRect frame = PFRectMakeWithSizeCenteredInRect ([_logInButton sizeThatFits: loginContentSize], loginContentRect);
290340 frame.origin .y = currentY + loginButtonTopInset;
291341 _logInButton.frame = frame;
292342
@@ -350,9 +400,7 @@ - (CGSize)_loginContentSizeThatFits:(CGSize)boundingSize withContentSizeScale:(C
350400}
351401
352402- (CGSize )_maxContentSize {
353- return (UI_USER_INTERFACE_IDIOM () == UIUserInterfaceIdiomPad ?
354- CGSizeMake (420 .0f , 550 .0f ) :
355- CGSizeMake (500 .0f , 800 .0f ));
403+ return (UI_USER_INTERFACE_IDIOM () == UIUserInterfaceIdiomPad ? CGSizeMake (420 .0f , 550 .0f ) : CGSizeMake (500 .0f , 800 .0f ));
356404}
357405
358406- (CGSize )_contentSizeScaleForContentSize : (CGSize )contentSize {
@@ -367,8 +415,17 @@ - (CGSize)_contentSizeScaleForContentSize:(CGSize)contentSize {
367415 return contentSizeScale;
368416}
369417
370- #pragma mark -
371- #pragma mark Accessors
418+ // /--------------------------------------
419+ #pragma mark - Accessors
420+ // /--------------------------------------
421+
422+ - (void )setFields : (PFLogInFields)fields {
423+ if (_fields != fields) {
424+ _fields = fields;
425+ [self _updateAllFields ];
426+ [self setNeedsLayout ];
427+ }
428+ }
372429
373430- (void )setLogo : (UIView *)logo {
374431 if (self.logo != logo) {
@@ -388,8 +445,9 @@ - (void)setEmailAsUsername:(BOOL)otherEmailAsUsername {
388445 }
389446}
390447
391- #pragma mark -
392- #pragma mark Private
448+ // /--------------------------------------
449+ #pragma mark - Private
450+ // /--------------------------------------
393451
394452+ (void )_validateFields : (PFLogInFields)fields {
395453 if (fields == PFLogInFieldsNone) {
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