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<?php

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namespace Smush\Core\Parser;

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class Element_Attribute {

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private $attribute;

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private $name;

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private $value;

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/**

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* @var Image_URL[]

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private $image_urls;

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public function __construct( $name, $value, $attribute = '', $image_urls = array() ) {

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$this->name = $name;

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$this->value = new Value( $value );

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$this->image_urls = $image_urls;

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$this->attribute = empty( $attribute )

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? sprintf( '%s="%s"', $name, $value )

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: $attribute;

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}

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/**

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* @return mixed

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public function get_attribute() {

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return $this->attribute;

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}

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/**

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* @return mixed

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public function get_name() {

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return $this->name;

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}

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/**

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* @return mixed

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public function get_value() {

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return $this->value->get();

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}

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public function set_value( $value ) {

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$this->value->set( $value );

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}

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public function has_updates() {

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if ( $this->value->has_updates() ) {

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return true;

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}

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foreach ( $this->image_urls as $image_url ) {

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if ( $image_url->has_updates() ) {

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return true;

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}

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}

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return false;

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}

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public function get_updated() {

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$updated = $this->attribute;

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if ( $this->value->has_updates() ) {

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// Replace whole value

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$updated = $this->replace_value( $updated );

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} else {

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// Replace the image URLs within the value

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$updated = $this->replace_image_urls( $updated );

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}

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return $updated;

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}

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/**

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* @return Image_URL[]

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public function get_image_urls() {

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return $this->image_urls;

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}

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public function get_single_image_url() {

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$image_urls = $this->get_image_urls();

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return empty( $image_urls )

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? null

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: $image_urls[0];

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}

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/**

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* @param $updated

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* @return string

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private function replace_image_urls( $updated ) {

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foreach ( $this->image_urls as $image_url ) {

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if ( $image_url->has_updates() ) {

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$updated = str_replace(

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$image_url->get_previous_url(),

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esc_url_raw( $image_url->get_url() ),

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$updated

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);

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}

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}

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return $updated;

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}

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/**

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* @param $updated

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* @return string

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private function replace_value( $updated ) {

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return str_replace(

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$this->value->get_previous(),

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esc_attr( $this->value->get() ),

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$updated

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);

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}

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}

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