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82 lines
3.0 KiB
82 lines
3.0 KiB
7 years ago
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<?php
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namespace Aldine;
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class PageButton extends \WP_Widget
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{
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/**
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* Constructor.
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*
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* @see WP_Widget::__construct()
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*
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*/
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public function __construct()
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{
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parent::__construct('pagebutton', __('Page Button', 'pressbooks-aldine'), [
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'description' => esc_html__('Add a styled button which links to a page.', 'pressbooks-aldine')
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]);
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}
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/**
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* Front-end display of widget.
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*
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* @see WP_Widget::widget()
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*
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* @param array $args Widget arguments.
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* @param array $instance Saved values from database.
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*/
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public function widget($args, $instance)
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{
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echo $args['before_widget'];
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if (! empty($instance['page_id'])) {
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if (empty($instance['title'])) {
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$instance['title'] = get_the_title($instance['page_id']);
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}
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printf('<a class="button" href="%1$s">%2$s</a>', get_permalink($instance['page_id']), apply_filters('widget_title', $instance['title']));
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}
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echo $args['after_widget'];
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}
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/**
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* Back-end widget form.
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*
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* @see WP_Widget::form()
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*
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* @param array $instance Previously saved values from database.
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*/
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public function form($instance)
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{
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$title = ! empty($instance['title']) ? $instance['title'] : '';
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$url = ! empty($instance['page_id']) ? $instance['page_id'] : ''; ?>
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<p><label for="<?php echo esc_attr($this->get_field_id('title')); ?>"><?php esc_attr_e('Title:', 'pressbooks-aldine'); ?></label>
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<input class="widefat" id="<?php echo esc_attr($this->get_field_id('title')); ?>" name="<?php echo esc_attr($this->get_field_name('title')); ?>" type="text" value="<?php echo esc_attr($title); ?>"></p>
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<p><label for="<?php echo esc_attr($this->get_field_id('page_id')); ?>"><?php esc_attr_e('Page:', 'pressbooks-aldine'); ?></label>
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<select id="<?php echo esc_attr($this->get_field_id('page_id')); ?>" name="<?php echo esc_attr($this->get_field_name('page_id')); ?>">
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<option value="" <?php selected($instance['page_id'], ''); ?>> -- </a>
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<?php $pages = get_pages();
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foreach ($pages as $page) { ?>
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<option value="<?= $page->ID; ?>" <?php selected(@$instance['page_id'], $page->ID); ?>><?= $page->post_title; ?></option>
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<?php } ?>
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</select></p>
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<?php
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}
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/**
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* Sanitize widget form values as they are saved.
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*
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* @see WP_Widget::update()
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*
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* @param array $new_instance Values just sent to be saved.
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* @param array $old_instance Previously saved values from database.
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*
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* @return array Updated safe values to be saved.
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*/
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public function update($new_instance, $old_instance)
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{
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$instance = [];
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$instance['title'] = ( ! empty($new_instance['title']) ) ? strip_tags($new_instance['title']) : '';
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$instance['page_id'] = ( ! empty($new_instance['page_id']) ) ? absint($new_instance['page_id']) : '';
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return $instance;
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}
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}
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