woocommerce/includes/shipping/free-shipping/class-wc-shipping-free-ship...

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<?php
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
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/**
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* Free Shipping Method.
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*
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* A simple shipping method for free shipping.
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*
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* @class WC_Shipping_Free_Shipping
* @version 2.6.0
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* @package WooCommerce/Classes/Shipping
* @author WooThemes
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*/
class WC_Shipping_Free_Shipping extends WC_Shipping_Method {
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/**
* Min amount to be valid.
*
* @var integer
*/
public $min_amount = 0;
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/**
* Requires option.
*
* @var string
*/
public $requires = '';
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/**
* Constructor.
*
* @param int $instance_id Shipping method instance.
*/
public function __construct( $instance_id = 0 ) {
$this->id = 'free_shipping';
$this->instance_id = absint( $instance_id );
$this->method_title = __( 'Free shipping', 'woocommerce' );
$this->method_description = __( 'Free shipping is a special method which can be triggered with coupons and minimum spends.', 'woocommerce' );
$this->supports = array(
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'shipping-zones',
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'instance-settings',
'instance-settings-modal',
);
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$this->init();
}
/**
* Initialize free shipping.
*/
public function init() {
// Load the settings.
$this->init_form_fields();
$this->init_settings();
// Define user set variables.
$this->title = $this->get_option( 'title' );
$this->min_amount = $this->get_option( 'min_amount', 0 );
$this->requires = $this->get_option( 'requires' );
// Actions.
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add_action( 'woocommerce_update_options_shipping_' . $this->id, array( $this, 'process_admin_options' ) );
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}
/**
* Init form fields.
*/
public function init_form_fields() {
$this->instance_form_fields = array(
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'title' => array(
'title' => __( 'Title', 'woocommerce' ),
'type' => 'text',
'description' => __( 'This controls the title which the user sees during checkout.', 'woocommerce' ),
'default' => $this->method_title,
'desc_tip' => true,
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),
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'requires' => array(
'title' => __( 'Free shipping requires...', 'woocommerce' ),
'type' => 'select',
'class' => 'wc-enhanced-select',
'default' => '',
'options' => array(
'' => __( 'N/A', 'woocommerce' ),
'coupon' => __( 'A valid free shipping coupon', 'woocommerce' ),
'min_amount' => __( 'A minimum order amount', 'woocommerce' ),
'either' => __( 'A minimum order amount OR a coupon', 'woocommerce' ),
'both' => __( 'A minimum order amount AND a coupon', 'woocommerce' ),
),
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),
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'min_amount' => array(
'title' => __( 'Minimum order amount', 'woocommerce' ),
'type' => 'price',
'placeholder' => wc_format_localized_price( 0 ),
'description' => __( 'Users will need to spend this amount to get free shipping (if enabled above).', 'woocommerce' ),
'default' => '0',
'desc_tip' => true,
),
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);
}
/**
* Get setting form fields for instances of this shipping method within zones.
*
* @return array
*/
public function get_instance_form_fields() {
if ( is_admin() ) {
wc_enqueue_js( "
jQuery( function( $ ) {
function wcFreeShippingShowHideMinAmountField( el ) {
var form = $( el ).closest( 'form' );
var minAmountField = $( '#woocommerce_free_shipping_min_amount', form ).closest( 'tr' );
if ( 'coupon' === $( el ).val() || '' === $( el ).val() ) {
minAmountField.hide();
} else {
minAmountField.show();
}
}
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$( document.body ).on( 'change', '#woocommerce_free_shipping_requires', function() {
wcFreeShippingShowHideMinAmountField( this );
});
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// Change while load.
$( '#woocommerce_free_shipping_requires' ).change();
$( document.body ).on( 'wc_backbone_modal_loaded', function( evt, target ) {
if ( 'wc-modal-shipping-method-settings' === target ) {
wcFreeShippingShowHideMinAmountField( $( '#wc-backbone-modal-dialog #woocommerce_free_shipping_requires', evt.currentTarget ) );
}
} );
});
" );
}
return parent::get_instance_form_fields();
}
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/**
* See if free shipping is available based on the package and cart.
*
* @param array $package Shipping package.
* @return bool
*/
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public function is_available( $package ) {
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$has_coupon = false;
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$has_met_min_amount = false;
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if ( in_array( $this->requires, array( 'coupon', 'either', 'both' ) ) ) {
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if ( $coupons = WC()->cart->get_coupons() ) {
foreach ( $coupons as $code => $coupon ) {
if ( $coupon->is_valid() && $coupon->get_free_shipping() ) {
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$has_coupon = true;
break;
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}
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}
}
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}
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if ( in_array( $this->requires, array( 'min_amount', 'either', 'both' ) ) ) {
$total = WC()->cart->get_displayed_subtotal();
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if ( WC()->cart->display_prices_including_tax() ) {
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$total = round( $total - ( WC()->cart->get_discount_total() + WC()->cart->get_discount_tax() ), wc_get_price_decimals() );
} else {
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$total = round( $total - WC()->cart->get_discount_total(), wc_get_price_decimals() );
}
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if ( $total >= $this->min_amount ) {
$has_met_min_amount = true;
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}
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}
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switch ( $this->requires ) {
case 'min_amount' :
$is_available = $has_met_min_amount;
break;
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case 'coupon' :
$is_available = $has_coupon;
break;
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case 'both' :
$is_available = $has_met_min_amount && $has_coupon;
break;
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case 'either' :
$is_available = $has_met_min_amount || $has_coupon;
break;
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default :
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$is_available = true;
break;
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}
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return apply_filters( 'woocommerce_shipping_' . $this->id . '_is_available', $is_available, $package, $this );
}
/**
* Called to calculate shipping rates for this method. Rates can be added using the add_rate() method.
*
* @uses WC_Shipping_Method::add_rate()
*
* @param array $package Shipping package.
*/
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public function calculate_shipping( $package = array() ) {
$this->add_rate( array(
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'label' => $this->title,
'cost' => 0,
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'taxes' => false,
'package' => $package,
) );
}
}