Completed
Push — instant-search-master ( 95535d...2c1eb1 )
by
unknown
22:37 queued 16:04
created

render_widget_status_messages()   F

Complexity

Conditions 19
Paths 135

Size

Total Lines 103

Duplication

Lines 63
Ratio 61.17 %

Importance

Changes 0
Metric Value
cc 19
nc 135
nop 1
dl 63
loc 103
rs 3.38
c 0
b 0
f 0

How to fix   Long Method    Complexity   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

1
<?php
2
3
class Jetpack_Subscriptions_Widget extends WP_Widget {
4
	static $instance_count = 0;
5
	/**
6
	 * @var array When printing the submit button, what tags are allowed
7
	 */
8
	static $allowed_html_tags_for_submit_button = array( 'br' => array() );
9
	/**
10
	 * Use this variable when printing the message after submitting an email in subscription widgets
11
	 *
12
	 * @var array what tags are allowed
13
	 */
14
	public static $allowed_html_tags_for_message = array(
15
		'a'  => array(
16
			'href'   => array(),
17
			'title'  => array(),
18
			'rel'    => array(),
19
			'target' => array(),
20
		),
21
		'br' => array(),
22
	);
23
24
	function __construct() {
25
		$widget_ops = array(
26
			'classname'                   => 'widget_blog_subscription jetpack_subscription_widget',
27
			'description'                 => __( 'Add an email signup form to allow people to subscribe to your blog.', 'jetpack' ),
28
			'customize_selective_refresh' => true,
29
		);
30
31
		$name = self::is_jetpack() ?
32
			/** This filter is documented in modules/widgets/facebook-likebox.php */
33
			apply_filters( 'jetpack_widget_name', __( 'Blog Subscriptions', 'jetpack' ) ) :
34
			__( 'Follow Blog', 'jetpack' );
35
36
		parent::__construct(
37
			'blog_subscription',
38
			$name,
39
			$widget_ops
40
		);
41
42 View Code Duplication
		if ( self::is_jetpack() &&
43
		     (
44
			     is_active_widget( false, false, $this->id_base ) ||
45
			     is_active_widget( false, false, 'monster' ) ||
46
			     is_customize_preview()
47
		     )
48
		) {
49
			add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_style' ) );
50
		}
51
	}
52
53
	/**
54
	 * Enqueue the form's CSS.
55
	 *
56
	 * @since 4.5.0
57
	 */
58
	function enqueue_style() {
59
		wp_register_style(
60
			'jetpack-subscriptions',
61
			plugins_url( 'subscriptions.css', __FILE__ ),
62
			array(),
63
			JETPACK__VERSION
64
		);
65
		wp_enqueue_style( 'jetpack-subscriptions' );
66
	}
67
68
	/**
69
	 * Renders a full widget either within the context of WordPress widget, or in response to a shortcode.
70
	 *
71
	 * @param array $args Display arguments including 'before_title', 'after_title', 'before_widget', and 'after_widget'.
72
	 * @param array $instance The settings for the particular instance of the widget.
73
	 */
74
	function widget( $args, $instance ) {
75
		if ( self::is_jetpack() &&
76
		     /** This filter is documented in modules/contact-form/grunion-contact-form.php */
77
		     false === apply_filters( 'jetpack_auto_fill_logged_in_user', false )
78
		) {
79
			$subscribe_email = '';
80
		} else {
81
			$current_user = wp_get_current_user();
82
			if ( ! empty( $current_user->user_email ) ) {
83
				$subscribe_email = esc_attr( $current_user->user_email );
84
			} else {
85
				$subscribe_email = '';
86
			}
87
		}
88
89
		$stats_action = self::is_jetpack() ? 'jetpack_subscriptions' : 'follow_blog';
90
		/** This action is documented in modules/widgets/gravatar-profile.php */
91
		do_action( 'jetpack_stats_extra', 'widget_view', $stats_action );
92
93
		$after_widget  = isset( $args['after_widget'] ) ? $args['after_widget'] : '';
94
		$before_widget = isset( $args['before_widget'] ) ? $args['before_widget'] : '';
95
		$instance      = wp_parse_args( (array) $instance, $this->defaults() );
96
97
		echo $before_widget;
98
99
		Jetpack_Subscriptions_Widget::$instance_count ++;
100
101
		self::render_widget_title( $args, $instance );
102
103
		self::render_widget_status_messages( $instance );
104
105
		if ( self::is_current_user_subscribed() ) {
106
			self::render_widget_already_subscribed( $instance );
107
		} else {
108
			self::render_widget_subscription_form( $args, $instance, $subscribe_email );
109
		}
110
111
		echo "\n" . $after_widget;
112
	}
113
114
	/**
115
	 * Prints the widget's title. If show_only_email_and_button is true, we will not show a title.
116
	 *
117
	 * @param array $args Display arguments including 'before_title', 'after_title', 'before_widget', and 'after_widget'.
118
	 * @param array $instance The settings for the particular instance of the widget.
119
	 */
120
	static function render_widget_title( $args, $instance ) {
121
		$show_only_email_and_button = $instance['show_only_email_and_button'];
122
		$before_title               = isset( $args['before_title'] ) ? $args['before_title'] : '';
123
		$after_title                = isset( $args['after_title'] ) ? $args['after_title'] : '';
124
		if ( self::is_wpcom() && ! $show_only_email_and_button ) {
125
			if ( self::is_current_user_subscribed() ) {
126 View Code Duplication
				if ( ! empty( $instance['title_following'] ) ) {
127
					echo $before_title . '<label for="subscribe-field' . ( Jetpack_Subscriptions_Widget::$instance_count > 1 ? '-' . Jetpack_Subscriptions_Widget::$instance_count : '' ) . '">' . esc_attr( $instance['title_following'] ) . '</label>' . $after_title . "\n";
128
				}
129 View Code Duplication
			} else {
130
				if ( ! empty( $instance['title'] ) ) {
131
					echo $before_title . '<label for="subscribe-field' . ( Jetpack_Subscriptions_Widget::$instance_count > 1 ? '-' . Jetpack_Subscriptions_Widget::$instance_count : '' ) . '">' . esc_attr( $instance['title'] ) . '</label>' . $after_title . "\n";
132
				}
133
			}
134
		}
135
136
		if ( self::is_jetpack() && empty( $instance['show_only_email_and_button'] ) ) {
137
			echo $args['before_title'] . esc_attr( $instance['title'] ) . $args['after_title'] . "\n";
138
		}
139
	}
140
141
	/**
142
	 * Prints the subscription block's status messages after someone has attempted to subscribe.
143
	 * Either a success message or an error message.
144
	 *
145
	 * @param array $instance The settings for the particular instance of the widget.
146
	 */
147
	static function render_widget_status_messages( $instance ) {
148
		if ( self::is_jetpack() && isset( $_GET['subscribe'] ) ) {
149
			$success_message   = isset( $instance['success_message'] ) ? stripslashes( $instance['success_message'] ) : '';
150
			$subscribers_total = self::fetch_subscriber_count();
151
			switch ( $_GET['subscribe'] ) :
152
				case 'invalid_email' : ?>
153
                    <p class="error"><?php esc_html_e( 'The email you entered was invalid. Please check and try again.', 'jetpack' ); ?></p>
154
					<?php break;
155
				case 'opted_out' : ?>
156
                    <p class="error"><?php printf( __( 'The email address has opted out of subscription emails. <br /> You can manage your preferences at <a href="%1$s" title="%2$s" target="_blank">subscribe.wordpress.com</a>', 'jetpack' ),
157
							'https://subscribe.wordpress.com/',
158
							__( 'Manage your email preferences.', 'jetpack' )
159
						); ?></p>
160
					<?php break;
161
				case 'already' : ?>
162
                    <p class="error"><?php printf( __( 'You have already subscribed to this site. Please check your inbox. <br /> You can manage your preferences at <a href="%1$s" title="%2$s" target="_blank">subscribe.wordpress.com</a>', 'jetpack' ),
163
							'https://subscribe.wordpress.com/',
164
							__( 'Manage your email preferences.', 'jetpack' )
165
						); ?></p>
166
					<?php break;
167 View Code Duplication
				case 'many_pending_subs':
168
					?>
169
					<p class="error">
170
						<?php
171
						printf(
172
							wp_kses(
173
								/* translators: 1: Link to Subscription Management page https://subscribe.wordpress.com/, 2: Description of this link */
174
								__( 'You already have several pending email subscriptions. <br /> Approve or delete a few subscriptions at <a href="%1$s" title="%2$s" target="_blank" rel="noopener noreferrer">subscribe.wordpress.com</a> before continuing.', 'jetpack' ),
175
								self::$allowed_html_tags_for_message
176
							),
177
							'https://subscribe.wordpress.com/',
178
							esc_attr__( 'Manage your email preferences.', 'jetpack' )
179
						);
180
						?>
181
					</p>
182
					<?php break;
183 View Code Duplication
				case 'pending':
184
					?>
185
					<p class="error">
186
						<?php
187
						printf(
188
							wp_kses(
189
								/* translators: 1: Link to Subscription Management page https://subscribe.wordpress.com/, 2: Description of this link */
190
								__( 'You subscribed this site before but you have not clicked the confirmation link yet. Please check your inbox. <br /> Otherwise, you can manage your preferences at <a href="%1$s" title="%2$s" target="_blank" rel="noopener noreferrer">subscribe.wordpress.com</a>.', 'jetpack' ),
191
								self::$allowed_html_tags_for_message
192
							),
193
							'https://subscribe.wordpress.com/',
194
							esc_attr__( 'Manage your email preferences.', 'jetpack' )
195
						);
196
						?>
197
					</p>
198
					<?php
199
					break;
200
				case 'success' : ?>
201
                    <div class="success"><?php echo wpautop( str_replace( '[total-subscribers]', number_format_i18n( $subscribers_total['value'] ), $success_message ) ); ?></div>
202
					<?php break;
203
				default : ?>
204
                    <p class="error"><?php esc_html_e( 'There was an error when subscribing. Please try again.', 'jetpack' ); ?></p>
205
					<?php break;
206
			endswitch;
207
		}
208
209
		if ( self::is_wpcom() && self::wpcom_has_status_message() ) {
210
			global $themecolors;
211
			switch ( $_GET['blogsub'] ) {
212 View Code Duplication
				case 'confirming':
213
					echo "<div style='background-color: #{$themecolors['bg']}; border: 1px solid #{$themecolors['border']}; color: #{$themecolors['text']}; padding-left: 5px; padding-right: 5px; margin-bottom: 10px;'>";
214
					_e( 'Thanks for subscribing! You&rsquo;ll get an email with a link to confirm your subscription. If you don&rsquo;t get it, please <a href="https://en.support.wordpress.com/contact/">contact us</a>.' );
215
					echo "</div>";
216
					break;
217 View Code Duplication
				case 'blocked':
218
					echo "<div style='background-color: #{$themecolors['bg']}; border: 1px solid #{$themecolors['border']}; color: #{$themecolors['text']}; padding-left: 5px; padding-right: 5px; margin-bottom: 10px;'>";
219
					_e( 'Subscriptions have been blocked for this email address.' );
220
					echo "</div>";
221
					break;
222 View Code Duplication
				case 'flooded':
223
					echo "<div style='background-color: #{$themecolors['bg']}; border: 1px solid #{$themecolors['border']}; color: #{$themecolors['text']}; padding-left: 5px; padding-right: 5px; margin-bottom: 10px;'>";
224
					_e( 'You already have several pending email subscriptions. Approve or delete a few through your <a href="https://subscribe.wordpress.com/">Subscription Manager</a> before attempting to subscribe to more blogs.' );
225
					echo "</div>";
226
					break;
227
				case 'spammed':
228
					echo "<div style='background-color: #{$themecolors['bg']}; border: 1px solid #{$themecolors['border']}; color: #{$themecolors['text']}; padding-left: 5px; padding-right: 5px; margin-bottom: 10px;'>";
229
					echo wp_kses_post( sprintf( __( 'Because there are many pending subscriptions for this email address, we have blocked the subscription. Please <a href="%s">activate or delete</a> pending subscriptions before attempting to subscribe.' ), 'https://subscribe.wordpress.com/' ) );
230
					echo "</div>";
231
					break;
232 View Code Duplication
				case 'subscribed':
233
					echo "<div style='background-color: #{$themecolors['bg']}; border: 1px solid #{$themecolors['border']}; color: #{$themecolors['text']}; padding-left: 5px; padding-right: 5px; margin-bottom: 10px;'>";
234
					_e( 'You&rsquo;re already subscribed to this site.' );
235
					echo "</div>";
236
					break;
237 View Code Duplication
				case 'pending':
238
					echo "<div style='background-color: #{$themecolors['bg']}; border: 1px solid #{$themecolors['border']}; color: #{$themecolors['text']}; padding-left: 5px; padding-right: 5px; margin-bottom: 10px;'>";
239
					_e( 'You have a pending subscription already; we just sent you another email. Click the link or <a href="https://en.support.wordpress.com/contact/">contact us</a> if you don&rsquo;t receive it.' );
240
					echo "</div>";
241
					break;
242 View Code Duplication
				case 'confirmed':
243
					echo "<div style='background-color: #{$themecolors['bg']}; border: 1px solid #{$themecolors['border']}; color: #{$themecolors['text']}; padding-left: 5px; padding-right: 5px; margin-bottom: 10px;'>";
244
					_e( 'Congrats, you&rsquo;re subscribed! You&rsquo;ll get an email with the details of your subscription and an unsubscribe link.' );
245
					echo "</div>";
246
					break;
247
			}
248
		}
249
	}
250
251
	/**
252
	 * Renders a message to folks who are already subscribed.
253
	 *
254
	 * @param array $instance The settings for the particular instance of the widget.
255
	 *
256
	 * @return void
257
	 */
258
	static function render_widget_already_subscribed( $instance ) {
259
		if ( self::is_wpcom() ) {
260
			$subscribers_total = self::fetch_subscriber_count();
261
			$edit_subs_url     = 'https://wordpress.com/following/edit/';
262
			if ( function_exists( 'localized_wpcom_url' ) ) {
263
				$edit_subs_url = localized_wpcom_url( http() . '://wordpress.com/following/edit/', get_user_locale() );
264
			}
265
			$show_subscribers_total = (bool) $instance['show_subscribers_total'];
266
			if ( $show_subscribers_total && $subscribers_total > 1 ) :
267
				$subscribers_not_me = $subscribers_total - 1;
268
				/* translators: %s: number of folks following the blog */
269
				?>
270
                <p><?php printf( _n( 'You are following this blog, along with %s other amazing person (<a href="%s">manage</a>).', 'You are following this blog, along with %s other amazing people (<a href="%s">manage</a>).', $subscribers_not_me ), number_format_i18n( $subscribers_not_me ), $edit_subs_url ) ?></p><?php
271
			else :
272
				?>
273
                <p><?php printf( __( 'You are following this blog (<a href="%s">manage</a>).' ), $edit_subs_url ) ?></p><?php
274
			endif;
275
		}
276
	}
277
278
	/**
279
	 * Renders a form allowing folks to subscribe to the blog.
280
	 *
281
	 * @param array $args Display arguments including 'before_title', 'after_title', 'before_widget', and 'after_widget'.
282
	 * @param array $instance The settings for the particular instance of the widget.
283
	 * @param string $subscribe_email The email to use to prefill the form.
284
	 */
285
	static function render_widget_subscription_form( $args, $instance, $subscribe_email ) {
286
		$show_only_email_and_button = $instance['show_only_email_and_button'];
287
		$subscribe_logged_in        = isset( $instance['subscribe_logged_in'] ) ? stripslashes( $instance['subscribe_logged_in'] ) : '';
288
		$show_subscribers_total     = (bool) $instance['show_subscribers_total'];
289
		$subscribe_text             = empty( $instance['show_only_email_and_button'] ) ?
290
			stripslashes( $instance['subscribe_text'] ) :
291
			false;
292
		$referer                    = ( is_ssl() ? 'https' : 'http' ) . '://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
293
		$source                     = 'widget';
294
		$widget_id                  = esc_attr( ! empty( $args['widget_id'] ) ? esc_attr( $args['widget_id'] ) : mt_rand( 450, 550 ) );
295
		$subscribe_button           = ! empty( $instance['submit_button_text'] ) ? $instance['submit_button_text'] : $instance['subscribe_button'];
296
		$subscribers_total          = self::fetch_subscriber_count();
297
		$subscribe_placeholder      = isset( $instance['subscribe_placeholder'] ) ? stripslashes( $instance['subscribe_placeholder'] ) : '';
298
		$submit_button_classes      = isset( $instance['submit_button_classes'] ) ? $instance['submit_button_classes'] : '';
299
		$submit_button_styles       = isset( $instance['submit_button_styles'] ) ? $instance['submit_button_styles'] : '';
300
301
		if ( self::is_wpcom() && ! self::wpcom_has_status_message() ) {
302
			global $current_blog;
303
			$url = defined( 'SUBSCRIBE_BLOG_URL' ) ? SUBSCRIBE_BLOG_URL : '';
304
			?>
305
            <form action="<?php echo $url; ?>" method="post" accept-charset="utf-8"
306
                  id="subscribe-blog<?php if ( Jetpack_Subscriptions_Widget::$instance_count > 1 ) {
307
				      echo '-' . Jetpack_Subscriptions_Widget::$instance_count;
308
			      } ?>">
309
				<?php if ( is_user_logged_in() ) : ?>
310
					<?php
311
					if ( ! $show_only_email_and_button ) {
312
						echo wpautop( $subscribe_logged_in );
313
					}
314 View Code Duplication
					if ( $show_subscribers_total && $subscribers_total ) {
315
						/* translators: %s: number of folks following the blog */
316
						echo wpautop( sprintf( _n( 'Join %s other follower', 'Join %s other followers', $subscribers_total ), number_format_i18n( $subscribers_total ) ) );
317
					}
318
					?>
319
				<?php else : ?>
320
					<?php
321
					if ( ! $show_only_email_and_button ) {
322
						echo wpautop( $subscribe_text );
323
					}
324 View Code Duplication
					if ( $show_subscribers_total && $subscribers_total ) {
325
						/* translators: %s: number of folks following the blog */
326
						echo wpautop( sprintf( _n( 'Join %s other follower', 'Join %s other followers', $subscribers_total ), number_format_i18n( $subscribers_total ) ) );
327
					}
328
					?>
329
                    <p><input type="text" name="email" style="width: 95%; padding: 1px 2px"
330
                              placeholder="<?php esc_attr_e( 'Enter your email address' ); ?>" value=""
331
                              id="subscribe-field<?php if ( Jetpack_Subscriptions_Widget::$instance_count > 1 ) {
332
						          echo '-' . Jetpack_Subscriptions_Widget::$instance_count;
333
					          } ?>"/></p>
334
				<?php endif; ?>
335
336
                <p>
337
                    <input type="hidden" name="action" value="subscribe"/>
338
                    <input type="hidden" name="blog_id" value="<?php echo (int) $current_blog->blog_id; ?>"/>
339
                    <input type="hidden" name="source" value="<?php echo esc_url( $referer ); ?>"/>
340
                    <input type="hidden" name="sub-type" value="<?php echo esc_attr( $source ); ?>"/>
341
                    <input type="hidden" name="redirect_fragment" value="<?php echo esc_attr( $widget_id ); ?>"/>
342
					<?php wp_nonce_field( 'blogsub_subscribe_' . $current_blog->blog_id, '_wpnonce', false ); ?>
343
                    <button type="submit"
344
	                    <?php if ( ! empty( $submit_button_classes ) ) { ?>
345
	                        class="<?php echo esc_attr( $submit_button_classes ); ?>"
346
	                    <?php }; ?>
347
		                <?php if ( ! empty( $submit_button_styles ) ) { ?>
348
			                style="<?php echo esc_attr( $submit_button_styles ); ?>"
349
		                <?php }; ?>
350
	                >
351
	                    <?php
352
	                    echo wp_kses(
353
		                    $subscribe_button,
354
		                    self::$allowed_html_tags_for_submit_button
355
	                    );
356
	                    ?>
357
                    </button>
358
                </p>
359
            </form>
360
			<?php
361
		}
362
363
		if ( self::is_jetpack() ) {
364
			/**
365
			 * Filter the subscription form's ID prefix.
366
			 *
367
			 * @module subscriptions
368
			 *
369
			 * @since 2.7.0
370
			 *
371
			 * @param string subscribe-field Subscription form field prefix.
372
			 * @param int $widget_id Widget ID.
373
			 */
374
			$subscribe_field_id = apply_filters( 'subscribe_field_id', 'subscribe-field', $widget_id );
375
			?>
376
            <form action="#" method="post" accept-charset="utf-8" id="subscribe-blog-<?php echo $widget_id; ?>">
377
				<?php
378
				if ( $subscribe_text && ( ! isset ( $_GET['subscribe'] ) || 'success' != $_GET['subscribe'] ) ) {
0 ignored issues
show
Bug Best Practice introduced by
The expression $subscribe_text of type string|false is loosely compared to true; this is ambiguous if the string can be empty. You might want to explicitly use !== false instead.

In PHP, under loose comparison (like ==, or !=, or switch conditions), values of different types might be equal.

For string values, the empty string '' is a special case, in particular the following results might be unexpected:

''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
Loading history...
379
					?>
380
                    <div id="subscribe-text"><?php echo wpautop( str_replace( '[total-subscribers]', number_format_i18n( $subscribers_total['value'] ), $subscribe_text ) ); ?></div><?php
381
				}
382
383
				if ( $show_subscribers_total && 0 < $subscribers_total['value'] ) {
384
					/* translators: %s: number of folks following the blog */
385
					echo wpautop( sprintf( _n( 'Join %s other subscriber', 'Join %s other subscribers', $subscribers_total['value'], 'jetpack' ), number_format_i18n( $subscribers_total['value'] ) ) );
386
				}
387
				if ( ! isset ( $_GET['subscribe'] ) || 'success' != $_GET['subscribe'] ) { ?>
388
                    <p id="subscribe-email">
389
                        <label id="jetpack-subscribe-label"
390
                               class="screen-reader-text"
391
                               for="<?php echo esc_attr( $subscribe_field_id ) . '-' . esc_attr( $widget_id ); ?>">
392
							<?php echo ! empty( $subscribe_placeholder ) ? esc_html( $subscribe_placeholder ) : esc_html__( 'Email Address:', 'jetpack' ); ?>
393
                        </label>
394
                        <input type="email" name="email" required="required" class="required"
395
                               value="<?php echo esc_attr( $subscribe_email ); ?>"
396
                               id="<?php echo esc_attr( $subscribe_field_id ) . '-' . esc_attr( $widget_id ); ?>"
397
                               placeholder="<?php echo esc_attr( $subscribe_placeholder ); ?>"/>
398
                    </p>
399
400
                    <p id="subscribe-submit">
401
                        <input type="hidden" name="action" value="subscribe"/>
402
                        <input type="hidden" name="source" value="<?php echo esc_url( $referer ); ?>"/>
403
                        <input type="hidden" name="sub-type" value="<?php echo esc_attr( $source ); ?>"/>
404
                        <input type="hidden" name="redirect_fragment" value="<?php echo $widget_id; ?>"/>
405
						<?php
406
						if ( is_user_logged_in() ) {
407
							wp_nonce_field( 'blogsub_subscribe_' . get_current_blog_id(), '_wpnonce', false );
408
						}
409
						?>
410
                        <button type="submit"
411
	                        <?php if ( ! empty( $submit_button_classes ) ) { ?>
412
	                            class="<?php echo esc_attr( $submit_button_classes ); ?>"
413
                            <?php }; ?>
414
		                    <?php if ( ! empty( $submit_button_styles ) ) { ?>
415
			                    style="<?php echo esc_attr( $submit_button_styles ); ?>"
416
		                    <?php }; ?>
417
	                        name="jetpack_subscriptions_widget"
418
	                    >
419
	                        <?php
420
	                        echo wp_kses(
421
		                        $subscribe_button,
422
		                        self::$allowed_html_tags_for_submit_button
423
	                        ); ?>
424
                        </button>
425
                    </p>
426
				<?php } ?>
427
            </form>
428
		<?php }
429
	}
430
431
	/**
432
	 * Determines if the current user is subscribed to the blog.
433
	 *
434
	 * @return bool Is the person already subscribed.
435
	 */
436
	static function is_current_user_subscribed() {
437
		$subscribed = isset( $_GET['subscribe'] ) && 'success' == $_GET['subscribe'];
438
439
		if ( self::is_wpcom() && class_exists( 'Blog_Subscription' ) && class_exists( 'Blog_Subscriber' ) ) {
440
			$subscribed = is_user_logged_in() && Blog_Subscription::is_subscribed( new Blog_Subscriber() );
441
		}
442
443
		return $subscribed;
444
	}
445
446
	/**
447
	 * Is this script running in the wordpress.com environment?
448
	 *
449
	 * @return bool
450
	 */
451
	static function is_wpcom() {
452
		return defined( 'IS_WPCOM' ) && IS_WPCOM;
453
	}
454
455
	/**
456
	 * Is this script running in a self-hosted environment?
457
	 *
458
	 * @return bool
459
	 */
460
	static function is_jetpack() {
461
		return ! self::is_wpcom();
462
	}
463
464
	/**
465
	 * Used to determine if there is a valid status slug within the wordpress.com environment.
466
	 *
467
	 * @return bool
468
	 */
469
	static function wpcom_has_status_message() {
470
		return isset( $_GET['blogsub'] ) &&
471
		       in_array(
472
			       $_GET['blogsub'],
473
			       array(
474
				       'confirming',
475
				       'blocked',
476
				       'flooded',
477
				       'spammed',
478
				       'subscribed',
479
				       'pending',
480
				       'confirmed',
481
			       )
482
		       );
483
	}
484
485
	/**
486
	 * Determine the amount of folks currently subscribed to the blog.
487
	 *
488
	 * @return int|array
489
	 */
490
	static function fetch_subscriber_count() {
491
		$subs_count = 0;
492
493
		if ( self::is_jetpack() ) {
494
			$subs_count = get_transient( 'wpcom_subscribers_total' );
495
			if ( false === $subs_count || 'failed' == $subs_count['status'] ) {
496
				$xml = new Jetpack_IXR_Client( array( 'user_id' => JETPACK_MASTER_USER, ) );
497
498
				$xml->query( 'jetpack.fetchSubscriberCount' );
499
500
				if ( $xml->isError() ) { // if we get an error from .com, set the status to failed so that we will try again next time the data is requested
501
					$subs_count = array(
502
						'status'  => 'failed',
503
						'code'    => $xml->getErrorCode(),
504
						'message' => $xml->getErrorMessage(),
505
						'value'   => ( isset( $subs_count['value'] ) ) ? $subs_count['value'] : 0,
506
					);
507
				} else {
508
					$subs_count = array(
509
						'status' => 'success',
510
						'value'  => $xml->getResponse(),
511
					);
512
				}
513
514
				set_transient( 'wpcom_subscribers_total', $subs_count, 3600 ); // try to cache the result for at least 1 hour
515
			}
516
		}
517
518
		if ( self::is_wpcom() && function_exists( 'wpcom_reach_total_for_blog' ) ) {
519
			$subs_count = wpcom_reach_total_for_blog();
520
		}
521
522
		return $subs_count;
523
	}
524
525
	/**
526
	 * Updates a particular instance of a widget when someone saves it in wp-admin.
527
	 *
528
	 * @param array $new_instance
529
	 * @param array $old_instance
530
	 *
531
	 * @return array
532
	 */
533
	function update( $new_instance, $old_instance ) {
534
		$instance = $old_instance;
535
536
		if ( self::is_jetpack() ) {
537
			$instance['title']                 = wp_kses( stripslashes( $new_instance['title'] ), array() );
538
			$instance['subscribe_placeholder'] = wp_kses( stripslashes( $new_instance['subscribe_placeholder'] ), array() );
539
			$instance['subscribe_button']      = wp_kses( stripslashes( $new_instance['subscribe_button'] ), array() );
540
			$instance['success_message']       = wp_kses( stripslashes( $new_instance['success_message'] ), array() );
541
		}
542
543
		if ( self::is_wpcom() ) {
544
			$instance['title']               = strip_tags( stripslashes( $new_instance['title'] ) );
545
			$instance['title_following']     = strip_tags( stripslashes( $new_instance['title_following'] ) );
546
			$instance['subscribe_logged_in'] = wp_filter_post_kses( stripslashes( $new_instance['subscribe_logged_in'] ) );
547
			$instance['subscribe_button']    = strip_tags( stripslashes( $new_instance['subscribe_button'] ) );
548
		}
549
550
		$instance['show_subscribers_total']     = isset( $new_instance['show_subscribers_total'] ) && $new_instance['show_subscribers_total'];
551
		$instance['show_only_email_and_button'] = isset( $new_instance['show_only_email_and_button'] ) && $new_instance['show_only_email_and_button'];
552
		$instance['subscribe_text']             = wp_filter_post_kses( stripslashes( $new_instance['subscribe_text'] ) );
553
554
		return $instance;
555
	}
556
557
	/**
558
	 * The default args for rendering a subscription form.
559
	 *
560
	 * @return array
561
	 */
562
	static function defaults() {
563
		$defaults = array(
564
			'show_subscribers_total'     => true,
565
			'show_only_email_and_button' => false
566
		);
567
568
		if ( self::is_jetpack() ) {
569
			$defaults['title']                 = esc_html__( 'Subscribe to Blog via Email', 'jetpack' );
570
			$defaults['subscribe_text']        = esc_html__( 'Enter your email address to subscribe to this blog and receive notifications of new posts by email.', 'jetpack' );
571
			$defaults['subscribe_placeholder'] = esc_html__( 'Email Address', 'jetpack' );
572
			$defaults['subscribe_button']      = esc_html__( 'Subscribe', 'jetpack' );
573
			$defaults['success_message']       = esc_html__( "Success! An email was just sent to confirm your subscription. Please find the email now and click 'Confirm Follow' to start subscribing.", 'jetpack' );
574
		}
575
576
		if ( self::is_wpcom() ) {
577
			$defaults['title']               = __( 'Follow Blog via Email' );
578
			$defaults['title_following']     = __( 'You are following this blog' );
579
			$defaults['subscribe_text']      = __( 'Enter your email address to follow this blog and receive notifications of new posts by email.' );
580
			$defaults['subscribe_button']    = __( 'Follow' );
581
			$defaults['subscribe_logged_in'] = __( 'Click to follow this blog and receive notifications of new posts by email.' );
582
		}
583
584
		return $defaults;
585
	}
586
587
	/**
588
	 * Renders the widget's options form in wp-admin.
589
	 *
590
	 * @param array $instance
591
	 */
592
	function form( $instance ) {
593
		$instance               = wp_parse_args( (array) $instance, $this->defaults() );
594
		$show_subscribers_total = checked( $instance['show_subscribers_total'], true, false );
595
596
597
		if ( self::is_wpcom() ) {
598
			$title               = esc_attr( stripslashes( $instance['title'] ) );
599
			$title_following     = esc_attr( stripslashes( $instance['title_following'] ) );
600
			$subscribe_text      = esc_attr( stripslashes( $instance['subscribe_text'] ) );
601
			$subscribe_logged_in = esc_attr( stripslashes( $instance['subscribe_logged_in'] ) );
602
			$subscribe_button    = esc_attr( stripslashes( $instance['subscribe_button'] ) );
603
			$subscribers_total   = self::fetch_subscriber_count();
604
		}
605
606
		if ( self::is_jetpack() ) {
607
			$title                 = stripslashes( $instance['title'] );
608
			$subscribe_text        = stripslashes( $instance['subscribe_text'] );
609
			$subscribe_placeholder = stripslashes( $instance['subscribe_placeholder'] );
610
			$subscribe_button      = stripslashes( $instance['subscribe_button'] );
611
			$success_message       = stripslashes( $instance['success_message'] );
612
			$subs_fetch            = self::fetch_subscriber_count();
613
			if ( 'failed' == $subs_fetch['status'] ) {
614
				printf( '<div class="error inline"><p>%s: %s</p></div>', esc_html( $subs_fetch['code'] ), esc_html( $subs_fetch['message'] ) );
615
			}
616
			$subscribers_total = number_format_i18n( $subs_fetch['value'] );
617
		}
618
619
		if ( self::is_wpcom() ) : ?>
620
            <p>
621
                <label for="<?php echo $this->get_field_id( 'title' ); ?>">
622
					<?php _e( 'Widget title for non-followers:' ); ?>
623
                    <input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>"
624
                           name="<?php echo $this->get_field_name( 'title' ); ?>" type="text"
625
                           value="<?php echo $title; ?>"/>
0 ignored issues
show
Bug introduced by
The variable $title does not seem to be defined for all execution paths leading up to this point.

If you define a variable conditionally, it can happen that it is not defined for all execution paths.

Let’s take a look at an example:

function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}

In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.

Available Fixes

  1. Check for existence of the variable explicitly:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        if (isset($x)) { // Make sure it's always set.
            echo $x;
        }
    }
    
  2. Define a default value for the variable:

    function myFunction($a) {
        $x = ''; // Set a default which gets overridden for certain paths.
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        echo $x;
    }
    
  3. Add a value for the missing path:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
    
            // We add support for the missing case.
            default:
                $x = '';
                break;
        }
    
        echo $x;
    }
    
Loading history...
626
                </label>
627
            </p>
628
            <p>
629
                <label for="<?php echo $this->get_field_id( 'title_following' ); ?>">
630
					<?php _e( 'Widget title for followers:' ); ?>
631
                    <input class="widefat" id="<?php echo $this->get_field_id( 'title_following' ); ?>"
632
                           name="<?php echo $this->get_field_name( 'title_following' ); ?>" type="text"
633
                           value="<?php echo $title_following; ?>"/>
0 ignored issues
show
Bug introduced by
The variable $title_following does not seem to be defined for all execution paths leading up to this point.

If you define a variable conditionally, it can happen that it is not defined for all execution paths.

Let’s take a look at an example:

function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}

In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.

Available Fixes

  1. Check for existence of the variable explicitly:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        if (isset($x)) { // Make sure it's always set.
            echo $x;
        }
    }
    
  2. Define a default value for the variable:

    function myFunction($a) {
        $x = ''; // Set a default which gets overridden for certain paths.
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        echo $x;
    }
    
  3. Add a value for the missing path:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
    
            // We add support for the missing case.
            default:
                $x = '';
                break;
        }
    
        echo $x;
    }
    
Loading history...
634
                </label>
635
            </p>
636
            <p>
637
                <label for="<?php echo $this->get_field_id( 'subscribe_logged_in' ); ?>">
638
					<?php _e( 'Optional text to display to logged in WordPress.com users:' ); ?>
639
                    <textarea style="width: 95%" id="<?php echo $this->get_field_id( 'subscribe_logged_in' ); ?>"
640
                              name="<?php echo $this->get_field_name( 'subscribe_logged_in' ); ?>"
641
                              type="text"><?php echo $subscribe_logged_in; ?></textarea>
0 ignored issues
show
Bug introduced by
The variable $subscribe_logged_in does not seem to be defined for all execution paths leading up to this point.

If you define a variable conditionally, it can happen that it is not defined for all execution paths.

Let’s take a look at an example:

function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}

In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.

Available Fixes

  1. Check for existence of the variable explicitly:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        if (isset($x)) { // Make sure it's always set.
            echo $x;
        }
    }
    
  2. Define a default value for the variable:

    function myFunction($a) {
        $x = ''; // Set a default which gets overridden for certain paths.
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        echo $x;
    }
    
  3. Add a value for the missing path:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
    
            // We add support for the missing case.
            default:
                $x = '';
                break;
        }
    
        echo $x;
    }
    
Loading history...
642
                </label>
643
            </p>
644
            <p>
645
                <label for="<?php echo $this->get_field_id( 'subscribe_text' ); ?>">
646
					<?php _e( 'Optional text to display to non-WordPress.com users:' ); ?>
647
                    <textarea style="width: 95%" id="<?php echo $this->get_field_id( 'subscribe_text' ); ?>"
648
                              name="<?php echo $this->get_field_name( 'subscribe_text' ); ?>"
649
                              type="text"><?php echo $subscribe_text; ?></textarea>
0 ignored issues
show
Bug introduced by
The variable $subscribe_text does not seem to be defined for all execution paths leading up to this point.

If you define a variable conditionally, it can happen that it is not defined for all execution paths.

Let’s take a look at an example:

function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}

In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.

Available Fixes

  1. Check for existence of the variable explicitly:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        if (isset($x)) { // Make sure it's always set.
            echo $x;
        }
    }
    
  2. Define a default value for the variable:

    function myFunction($a) {
        $x = ''; // Set a default which gets overridden for certain paths.
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        echo $x;
    }
    
  3. Add a value for the missing path:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
    
            // We add support for the missing case.
            default:
                $x = '';
                break;
        }
    
        echo $x;
    }
    
Loading history...
650
                </label>
651
            </p>
652
            <p>
653
                <label for="<?php echo $this->get_field_id( 'subscribe_button' ); ?>">
654
					<?php _e( 'Follow Button Text:' ); ?>
655
                    <input class="widefat" id="<?php echo $this->get_field_id( 'subscribe_button' ); ?>"
656
                           name="<?php echo $this->get_field_name( 'subscribe_button' ); ?>" type="text"
657
                           value="<?php echo $subscribe_button; ?>"/>
0 ignored issues
show
Bug introduced by
The variable $subscribe_button does not seem to be defined for all execution paths leading up to this point.

If you define a variable conditionally, it can happen that it is not defined for all execution paths.

Let’s take a look at an example:

function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}

In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.

Available Fixes

  1. Check for existence of the variable explicitly:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        if (isset($x)) { // Make sure it's always set.
            echo $x;
        }
    }
    
  2. Define a default value for the variable:

    function myFunction($a) {
        $x = ''; // Set a default which gets overridden for certain paths.
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        echo $x;
    }
    
  3. Add a value for the missing path:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
    
            // We add support for the missing case.
            default:
                $x = '';
                break;
        }
    
        echo $x;
    }
    
Loading history...
658
                </label>
659
            </p>
660
            <p>
661
                <label for="<?php echo $this->get_field_id( 'show_subscribers_total' ); ?>">
662
                    <input type="checkbox" id="<?php echo $this->get_field_id( 'show_subscribers_total' ); ?>"
663
                           name="<?php echo $this->get_field_name( 'show_subscribers_total' ); ?>"
664
                           value="1"<?php echo $show_subscribers_total; ?> />
665
					<?php echo esc_html( sprintf( _n( 'Show total number of followers? (%s follower)', 'Show total number of followers? (%s followers)', $subscribers_total ), number_format_i18n( $subscribers_total ) ) ); ?>
0 ignored issues
show
Bug introduced by
The variable $subscribers_total does not seem to be defined for all execution paths leading up to this point.

If you define a variable conditionally, it can happen that it is not defined for all execution paths.

Let’s take a look at an example:

function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}

In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.

Available Fixes

  1. Check for existence of the variable explicitly:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        if (isset($x)) { // Make sure it's always set.
            echo $x;
        }
    }
    
  2. Define a default value for the variable:

    function myFunction($a) {
        $x = ''; // Set a default which gets overridden for certain paths.
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        echo $x;
    }
    
  3. Add a value for the missing path:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
    
            // We add support for the missing case.
            default:
                $x = '';
                break;
        }
    
        echo $x;
    }
    
Loading history...
666
                </label>
667
            </p>
668
		<?php endif;
669
670
		if ( self::is_jetpack() ) : ?>
671
            <p>
672
                <label for="<?php echo $this->get_field_id( 'title' ); ?>">
673
					<?php _e( 'Widget title:', 'jetpack' ); ?>
674
                    <input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>"
675
                           name="<?php echo $this->get_field_name( 'title' ); ?>" type="text"
676
                           value="<?php echo esc_attr( $title ); ?>"/>
677
                </label>
678
            </p>
679
            <p>
680
                <label for="<?php echo $this->get_field_id( 'subscribe_text' ); ?>">
681
					<?php _e( 'Optional text to display to your readers:', 'jetpack' ); ?>
682
                    <textarea class="widefat" id="<?php echo $this->get_field_id( 'subscribe_text' ); ?>"
683
                              name="<?php echo $this->get_field_name( 'subscribe_text' ); ?>"
684
                              rows="3"><?php echo esc_html( $subscribe_text ); ?></textarea>
685
                </label>
686
            </p>
687
            <p>
688
                <label for="<?php echo $this->get_field_id( 'subscribe_placeholder' ); ?>">
689
					<?php esc_html_e( 'Subscribe Placeholder:', 'jetpack' ); ?>
690
                    <input class="widefat" id="<?php echo $this->get_field_id( 'subscribe_placeholder' ); ?>"
691
                           name="<?php echo $this->get_field_name( 'subscribe_placeholder' ); ?>" type="text"
692
                           value="<?php echo esc_attr( $subscribe_placeholder ); ?>"/>
0 ignored issues
show
Bug introduced by
The variable $subscribe_placeholder does not seem to be defined for all execution paths leading up to this point.

If you define a variable conditionally, it can happen that it is not defined for all execution paths.

Let’s take a look at an example:

function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}

In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.

Available Fixes

  1. Check for existence of the variable explicitly:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        if (isset($x)) { // Make sure it's always set.
            echo $x;
        }
    }
    
  2. Define a default value for the variable:

    function myFunction($a) {
        $x = ''; // Set a default which gets overridden for certain paths.
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        echo $x;
    }
    
  3. Add a value for the missing path:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
    
            // We add support for the missing case.
            default:
                $x = '';
                break;
        }
    
        echo $x;
    }
    
Loading history...
693
                </label>
694
            </p>
695
            <p>
696
                <label for="<?php echo $this->get_field_id( 'subscribe_button' ); ?>">
697
					<?php _e( 'Subscribe Button:', 'jetpack' ); ?>
698
                    <input class="widefat" id="<?php echo $this->get_field_id( 'subscribe_button' ); ?>"
699
                           name="<?php echo $this->get_field_name( 'subscribe_button' ); ?>" type="text"
700
                           value="<?php echo esc_attr( $subscribe_button ); ?>"/>
701
                </label>
702
            </p>
703
            <p>
704
                <label for="<?php echo $this->get_field_id( 'success_message' ); ?>">
705
					<?php _e( 'Success Message Text:', 'jetpack' ); ?>
706
                    <textarea class="widefat" id="<?php echo $this->get_field_id( 'success_message' ); ?>"
707
                              name="<?php echo $this->get_field_name( 'success_message' ); ?>"
708
                              rows="5"><?php echo esc_html( $success_message ); ?></textarea>
0 ignored issues
show
Bug introduced by
The variable $success_message does not seem to be defined for all execution paths leading up to this point.

If you define a variable conditionally, it can happen that it is not defined for all execution paths.

Let’s take a look at an example:

function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}

In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.

Available Fixes

  1. Check for existence of the variable explicitly:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        if (isset($x)) { // Make sure it's always set.
            echo $x;
        }
    }
    
  2. Define a default value for the variable:

    function myFunction($a) {
        $x = ''; // Set a default which gets overridden for certain paths.
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        echo $x;
    }
    
  3. Add a value for the missing path:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
    
            // We add support for the missing case.
            default:
                $x = '';
                break;
        }
    
        echo $x;
    }
    
Loading history...
709
                </label>
710
            </p>
711
            <p>
712
                <label for="<?php echo $this->get_field_id( 'show_subscribers_total' ); ?>">
713
                    <input type="checkbox" id="<?php echo $this->get_field_id( 'show_subscribers_total' ); ?>"
714
                           name="<?php echo $this->get_field_name( 'show_subscribers_total' ); ?>"
715
                           value="1"<?php echo $show_subscribers_total; ?> />
716
					<?php echo esc_html( sprintf( _n( 'Show total number of subscribers? (%s subscriber)', 'Show total number of subscribers? (%s subscribers)', $subscribers_total, 'jetpack' ), $subscribers_total ) ); ?>
717
                </label>
718
            </p>
719
		<?php endif;
720
	}
721
}
722
723
if ( defined( 'IS_WPCOM' ) && IS_WPCOM && function_exists( 'class_alias' ) ) {
724
	class_alias( 'Jetpack_Subscriptions_Widget', 'Blog_Subscription_Widget' );
725
}
726
727
function get_jetpack_blog_subscriptions_widget_classname() {
728
	return ( defined( 'IS_WPCOM' ) && IS_WPCOM ) ?
729
		'Blog_Subscription_Widget' :
730
		'Jetpack_Subscriptions_Widget';
731
}
732
733
function jetpack_do_subscription_form( $instance ) {
734
	if ( empty( $instance ) || ! is_array( $instance ) ) {
735
		$instance = array();
736
	}
737
738
	if ( empty( $instance['show_subscribers_total'] ) || 'false' === $instance['show_subscribers_total'] ) {
739
		$instance['show_subscribers_total'] = false;
740
	} else {
741
		$instance['show_subscribers_total'] = true;
742
	}
743
744
	$show_only_email_and_button             = isset( $instance['show_only_email_and_button'] ) ? $instance['show_only_email_and_button'] : false;
745
	$submit_button_text                     = isset( $instance['submit_button_text'] ) ? $instance['submit_button_text'] : '';
746
747
748
749
	// Build up a string with the submit button's classes and styles and set it on the instance
750
	$submit_button_classes = isset( $instance['submit_button_classes'] ) ? $instance['submit_button_classes'] : '';
751
	$submit_button_styles = '';
752
	if ( isset( $instance['custom_background_button_color'] ) ) {
753
		$submit_button_styles .= 'background-color: ' . $instance['custom_background_button_color'] . '; ';
754
	}
755
	if ( isset( $instance['custom_text_button_color'] ) ) {
756
		$submit_button_styles .= 'color: ' . $instance['custom_text_button_color'] . ';';
757
	}
758
759
	$instance = shortcode_atts(
760
		Jetpack_Subscriptions_Widget::defaults(),
761
		$instance,
762
		'jetpack_subscription_form'
763
	);
764
765
	// These must come after the call to shortcode_atts()
766
	$instance['submit_button_text']         = $submit_button_text;
767
	$instance['show_only_email_and_button'] = $show_only_email_and_button;
768
	if ( ! empty( $submit_button_classes ) ) {
769
		$instance['submit_button_classes'] = $submit_button_classes;
770
	}
771
	if ( ! empty ( $submit_button_styles ) ) {
772
		$instance['submit_button_styles'] = $submit_button_styles;
773
	}
774
775
	$args = array(
776
		'before_widget' => '<div class="jetpack_subscription_widget">',
777
	);
778
	ob_start();
779
	the_widget( get_jetpack_blog_subscriptions_widget_classname(), $instance, $args );
780
	$output = ob_get_clean();
781
782
	return $output;
783
}
784
785
add_shortcode( 'jetpack_subscription_form', 'jetpack_do_subscription_form' );
786
add_shortcode( 'blog_subscription_form', 'jetpack_do_subscription_form' );
787
788
function jetpack_blog_subscriptions_init() {
789
	register_widget( get_jetpack_blog_subscriptions_widget_classname() );
790
}
791
792
add_action( 'widgets_init', 'jetpack_blog_subscriptions_init' );
793
794
function jetpack_register_subscriptions_block() {
795
	if ( class_exists( 'WP_Block_Type_Registry' ) && ! WP_Block_Type_Registry::get_instance()->is_registered( 'jetpack/subscriptions' ) ) {
796
		jetpack_register_block( 'jetpack/subscriptions' );
797
	}
798
}
799
800
add_action( 'init', 'jetpack_register_subscriptions_block' );
801