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/* translators: Hidden accessibility text. */

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_e( 'Background Color' );

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</span></legend>

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<?php

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$default_color = '';

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if ( current_theme_supports( 'custom-background', 'default-color' ) ) {

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$default_color = ' data-default-color="#' . esc_attr( get_theme_support( 'custom-background', 'default-color' ) ) . '"';

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}

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</fieldset></td>

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</tr>

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</tbody>

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</table>

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<?php wp_nonce_field( 'custom-background' ); ?>

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<?php submit_button( null, 'primary', 'save-background-options' ); ?>

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</form>

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</div>

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<?php

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}

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/**

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* Handles an Image upload for the background image.

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* @since 3.0.0

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public function handle_upload() {

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if ( empty( $_FILES ) ) {

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return;

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}

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check_admin_referer( 'custom-background-upload', '_wpnonce-custom-background-upload' );

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$overrides = array( 'test_form' => false );

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$uploaded_file = $_FILES['import'];

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$wp_filetype = wp_check_filetype_and_ext( $uploaded_file['tmp_name'], $uploaded_file['name'] );

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if ( ! wp_match_mime_types( 'image', $wp_filetype['type'] ) ) {

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wp_die( __( 'The uploaded file is not a valid image. Please try again.' ) );

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}

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$file = wp_handle_upload( $uploaded_file, $overrides );

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if ( isset( $file['error'] ) ) {

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wp_die( $file['error'] );

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}

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$url = $file['url'];

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$type = $file['type'];

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$file = $file['file'];

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$filename = wp_basename( $file );

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// Construct the attachment array.

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$attachment = array(

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'post_title' => $filename,

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'post_content' => $url,

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'post_mime_type' => $type,

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'guid' => $url,

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'context' => 'custom-background',

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);

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// Save the data.

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$id = wp_insert_attachment( $attachment, $file );

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// Add the metadata.

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wp_update_attachment_metadata( $id, wp_generate_attachment_metadata( $id, $file ) );

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update_post_meta( $id, '_wp_attachment_is_custom_background', get_option( 'stylesheet' ) );

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set_theme_mod( 'background_image', sanitize_url( $url ) );

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$thumbnail = wp_get_attachment_image_src( $id, 'thumbnail' );

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set_theme_mod( 'background_image_thumb', sanitize_url( $thumbnail[0] ) );

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/** This filter is documented in wp-admin/includes/class-custom-image-header.php */

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$file = apply_filters( 'wp_create_file_in_uploads', $file, $id ); // For replication.

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$this->updated = true;

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}

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/**

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* Handles Ajax request for adding custom background context to an attachment.

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* Triggers when the user adds a new background image from the

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* Media Manager.

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* @since 4.1.0

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public function ajax_background_add() {

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check_ajax_referer( 'background-add', 'nonce' );

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if ( ! current_user_can( 'edit_theme_options' ) ) {

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wp_send_json_error();

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}

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$attachment_id = absint( $_POST['attachment_id'] );

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if ( $attachment_id < 1 ) {

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wp_send_json_error();

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}

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update_post_meta( $attachment_id, '_wp_attachment_is_custom_background', get_stylesheet() );

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wp_send_json_success();

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}

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/**

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* @since 3.4.0

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* @deprecated 3.5.0

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* @param array $form_fields

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* @return array $form_fields

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public function attachment_fields_to_edit( $form_fields ) {

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return $form_fields;

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}

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/**

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* @since 3.4.0

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* @deprecated 3.5.0

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* @param array $tabs

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* @return array $tabs

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public function filter_upload_tabs( $tabs ) {

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return $tabs;

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}

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/**

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* @since 3.4.0

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* @deprecated 3.5.0

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public function wp_set_background_image() {

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check_ajax_referer( 'custom-background' );

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if ( ! current_user_can( 'edit_theme_options' ) || ! isset( $_POST['attachment_id'] ) ) {

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exit;

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}

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$attachment_id = absint( $_POST['attachment_id'] );

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$sizes = array_keys(

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/** This filter is documented in wp-admin/includes/media.php */

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apply_filters(

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'image_size_names_choose',

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array(

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'thumbnail' => __( 'Thumbnail' ),

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'medium' => __( 'Medium' ),

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'large' => __( 'Large' ),

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'full' => __( 'Full Size' ),

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)

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)

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);

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$size = 'thumbnail';

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if ( in_array( $_POST['size'], $sizes, true ) ) {

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$size = esc_attr( $_POST['size'] );

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}

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update_post_meta( $attachment_id, '_wp_attachment_is_custom_background', get_option( 'stylesheet' ) );

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$url = wp_get_attachment_image_src( $attachment_id, $size );

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$thumbnail = wp_get_attachment_image_src( $attachment_id, 'thumbnail' );

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set_theme_mod( 'background_image', sanitize_url( $url[0] ) );

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set_theme_mod( 'background_image_thumb', sanitize_url( $thumbnail[0] ) );

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exit;

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}

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}

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