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Edit File: widget.php

<?php
/*
 Seamless Donations by David Gewirtz, adopted from Allen Snook

Lab Notes: http://zatzlabs.com/lab-notes/
 Plugin Page: http://zatzlabs.com/seamless-donations/
 Contact: http://zatzlabs.com/contact-us/

//	Exit if .php file accessed directly
if ( !defined( 'ABSPATH' ) ) exit;

// todo - make widget work

$apf_folder = dirname(dirname(__FILE__)) . '/library/apf/';

//if ( ! class_exists( 'SeamlessDonationsAdminPageFramework' ) ) {
//	include_once( $apf_folder . 'admin-page-framework.php' );
//}

//// WIDGET BASICS ////
///

// Adds widget: Donations This Month
class Donationsthismonth_Widget extends WP_Widget
{
    function __construct() {
        parent::__construct(
            'donationsthismonth_widget',
            esc_html__('Donations This Month4', 'seamless-donations'),
            array('description' => esc_html__('Basic Widget Pack provides five additional informative and helpful widgets', 'seamless-donations'),) // Args
        );
    }

private $widget_fields = array(
        array(
            'label'   => 'Month Total Name',
            'id'      => 'month_total_name',
            'default' => 'Month Total',
            'type'    => 'text',
        ),
        array(
            'label'   => 'Separator Between Name and Total',
            'id'      => 'month_total_separator',
            'default' => ' - ',
            'type'    => 'text',
        ),
    );

public function widget($args, $instance) {
        echo $args['before_widget'];

if (!empty($instance['title'])) {
            echo $args['before_title'] . apply_filters('widget_title', $instance['title']) . $args['after_title'];
        }

// Output generated fields
        echo '<p>' . $instance['month_total_name'] . '</p>';
        echo '<p>' . $instance['month_total_separator'] . '</p>';

echo $args['after_widget'];
    }

public function field_generator($instance) {
        $output = '';
        foreach ($this->widget_fields as $widget_field) {
            $default = '';
            if (isset($widget_field['default'])) {
                $default = $widget_field['default'];
            }
            $widget_value = !empty($instance[$widget_field['id']]) ? $instance[$widget_field['id']] : esc_html__($default, 'seamless-donations');
            switch ($widget_field['type']) {
                default:
                    $output .= '<p>';
                    $output .= '<label for="' . esc_attr($this->get_field_id($widget_field['id'])) . '">' . esc_attr($widget_field['label'], 'seamless-donations') . ':</label> ';
                    $output .= '<input class="widefat" id="' . esc_attr($this->get_field_id($widget_field['id'])) . '" name="' . esc_attr($this->get_field_name($widget_field['id'])) . '" type="' . $widget_field['type'] . '" value="' . esc_attr($widget_value) . '">';
                    $output .= '</p>';
            }
        }
        echo $output;
    }

public function form($instance) {
        $title = !empty($instance['title']) ? $instance['title'] : esc_html__('', 'seamless-donations');
        ?>
        <p>
            <label for="<?php echo esc_attr($this->get_field_id('title')); ?>"><?php esc_attr_e('Title:', 'seamless-donations'); ?></label>
            <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>
        <?php
        $this->field_generator($instance);
    }

public function update($new_instance, $old_instance) {
        $instance          = array();
        $instance['title'] = (!empty($new_instance['title'])) ? strip_tags($new_instance['title']) : '';
        foreach ($this->widget_fields as $widget_field) {
            switch ($widget_field['type']) {
                default:
                    $instance[$widget_field['id']] = (!empty($new_instance[$widget_field['id']])) ? strip_tags($new_instance[$widget_field['id']]) : '';
            }
        }
        return $instance;
    }
}

function register_donationsthismonth_widget() {
    register_widget('Donationsthismonth_Widget');
}

add_action('widgets_init', 'register_donationsthismonth_widget');

/*
class SeamlessDonationsThisMonth_Widget extends SeamlessDonationsAdminPageFramework_Widget
{
    public function setUp() {
        $this->setArguments(
            array(
                'description' => __(
                    'Displays the total of all donations made in the current month.',
                    'seamless-donations'),
            )
        );
    }

public function load($oAdminWidget) {
        // Prepare the settings array for the widget
        // the $this->addSettingFields() takes multiple parameters, each an array to be added

// promo
        $promo_text = 'Basic Widget Pack provides five additional informative and helpful widgets.';
        $promo_url  = 'http://zatzlabs.com/project/seamless-donations-basic-widget-pack/';
        $promo_desc = seamless_donations_get_feature_promo($promo_text, $promo_url);

$this->addSettingFields(
            array( // display title field
                   'field_id' => 'month_total_title',
                   'type'     => 'text',
                   'title'    => __('Title', 'seamless-donations'),
                   'default'  => __('Donations This Month', 'seamless-donations'),
            ),
            array(
                'field_id' => 'month_total_name',
                'type'     => 'text',
                'title'    => __('Month Total Name', 'seamless-donations'),
                'default'  => __('Month Total', 'seamless-donations'),
            ),
            array(
                'field_id' => 'month_total_separator',
                'type'     => 'text',
                'title'    => __('Separator Between Name and Total', 'seamless-donations'),
                'default'  => __(' - ', 'seamless-donations'),
            )
        );

if (!function_exists('seamless_donations_bwp_is_compatible')) {
            $this->oForm->aFields['_default']['month_total_separator']['description']
                = __($promo_desc, 'seamless-donations');
        }
    }

public
    function validate(
        $aSubmit, $aStored, $oAdminWidget
    ) {
        return $aSubmit;
    }

public
    function content(
        $sContent, $aArguments, $aFormData
    ) {
        // retrieve widget options

if (isset($aFormData['month_total_separator'])) {
            $total_sep = $aFormData['month_total_separator'];
        } else {
            $total_sep = ' - ';
        }
        if (isset($aFormData['month_total_name'])) {
            $total_name = $aFormData['month_total_name'];
        } else {
            $total_name = 'Total This Month';
        }

$html = '<h2 class="widget-title">' . $aFormData['month_total_title'] . '</h2>';

////

// Set up a date interval object for 6 months ago (you can change as required)
        $interval         = new DateInterval('P1M');
        $interval->invert = 1;

// Grab the date as it was 6 months ago
        $date = new DateTime(date('Y-m-d'));
        $date->add($interval);

/////
        // select the donations to show

$args = array(
            'post_type'   => 'donation',
            'post_status' => 'publish',
            'nopaging'    => true,
            'order_by'    => 'date',
            'date_query'  => array(
                'after' => $date->format('Y-m-d'),
            ),
        );

$donations_array = get_posts($args);

$donation_total = 0.0;

// loop through a list of donations
        for ($i = 0; $i < count($donations_array); ++$i) {
            // extract the fund id from the donation and fund records
            $donation_id = $donations_array[$i]->ID;

$amount         = get_post_meta($donation_id, '_dgx_donate_amount', true);
            $donation_total += floatval($amount);
        }

$html .= "<ul>";
        $html .= '<li>';

$html .= $total_name;
        $html .= $total_sep;

$donation_total = dgx_donate_get_escaped_formatted_amount(floatval($donation_total), 0);
        $html           .= $donation_total;

$html .= '</li>';

$html .= "</ul>";

return $html;
    }
}

new SeamlessDonationsThisMonth_Widget(__('Donations This Month', 'seamless-donations'));
*/