Customize: Allow specifying the number of rows for <textarea> inputs.

Previously, the textarea control was forced to use 5 rows. This commit instead applies a default value of 5, but allows for a developer to specify a different number of rows using the input_attrs arg.

Props sirlouen, timhavinga, celloexpressions, sainathpoojary. 
Fixes #47445.


git-svn-id: https://develop.svn.wordpress.org/trunk@60662 602fd350-edb4-49c9-b593-d223f7449a82

Author: TimothyBJacobs

src/wp-includes/class-wp-customize-control.php

@@ -566,6 +566,9 @@ protected function render_content() {
 				<?php
 				break;
 			case 'textarea':
+				if ( !array_key_exists( 'rows', $this->input_attrs ) ) {
+					$this->input_attrs['rows'] = 5;
+				}
 				?>
 				<?php if ( ! empty( $this->label ) ) : ?>
 					<label for="<?php echo esc_attr( $input_id ); ?>" class="customize-control-title"><?php echo esc_html( $this->label ); ?></label>
@@ -575,7 +578,6 @@ protected function render_content() {
 				<?php endif; ?>
 				<textarea
 					id="<?php echo esc_attr( $input_id ); ?>"
-					rows="5"
 					<?php echo $describedby_attr; ?>
 					<?php $this->input_attrs(); ?>
 					<?php $this->link(); ?>