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Edit File: widget_calendar.php

<?php

defined( 'ABSPATH' ) or exit( 'No direct script access allowed' );

/**
 * @author lord_viper
 * @copyright 2013
 */
class parsidate_calendar extends WP_Widget {
	public function __construct() {
		global $wp_version;

if ( version_compare( $wp_version, '4.3', '>=' ) ) {
			parent::__construct( false, __( 'Jalali Date Calender', 'wp-parsidate' ), 'description=' . __( 'Jalali Date Calender', 'wp-parsidate' ) );
		} else {
			parent::WP_Widget( false, __( 'Jalali Date Calender', 'wp-parsidate' ), 'description=' . __( 'Jalali Date Calender', 'wp-parsidate' ) );
		}
	}

/**
	 * Outputs the settings update form.
	 *
	 * @param array $instance Current settings.
	 *
	 * @return void Default return is 'noform'.
	 * @since 2.8.0
	 *
	 */
	public function form( $instance ) {
		$title = ! empty( $instance['parsidate_calendar_title'] ) ? $instance['parsidate_calendar_title'] : __( 'Jalali Date Calender', 'wp-parsidate' );
		$theme = ! empty( $instance['theme_color'] ) ? $instance['theme_color'] : 'light-mode';

if ( ! wpp_is_active( 'conv_permalinks' ) ) {
			echo "<p style='color: #ff8153'>" . __( 'For use widget, active "Fix permalinks dates" option in plugin settings.', 'wp-parsidate' ) . "</p>";
		}
		?>
        <p style="text-align:right; direction:rtl">
            <label for="<?php echo $this->get_field_id( 'parsidate_calendar_title' ); ?>">
				<?php _e( 'Title:', 'wp-parsidate' ) ?></label>

<input style="width:calc(100% - 120px);float:left"
                   id="<?php echo $this->get_field_id( 'parsidate_calendar_title' ); ?>"
                   name="<?php echo $this->get_field_name( 'parsidate_calendar_title' ); ?>" type="text"
                   value="<?php echo esc_attr( $title ); ?>"/>
        </p>

<p style="text-align:right; direction:rtl">
            <label for="<?php echo $this->get_field_id( 'theme-color' ); ?>">
				<?php _e( 'Theme color:', 'wp-parsidate' ) ?></label>

<select style="width:calc(100% - 120px);float:left" id="<?php echo $this->get_field_id( 'theme-color' ); ?>"
                    name="<?php echo $this->get_field_name( 'theme-color' ); ?>">
                <option value="light-mode" <?php selected( $theme, 'light-mode' ); ?>>
					<?php _e( 'Light Mode', 'wp-parsidate' ) ?>
                </option>
                <option value="dark-mode" <?php selected( $theme, 'dark-mode' ); ?>>
					<?php _e( 'Dark Mode', 'wp-parsidate' ) ?>
                </option>
            </select>
        </p>
		<?php
	}

/**
	 * Updates a particular instance of a widget.
	 *
	 * This function should check that `$new_instance` is set correctly. The newly-calculated
	 * value of `$instance` should be returned. If false is returned, the instance won't be
	 * saved/updated.
	 *
	 * @param array $new_instance New settings for this instance as input by the user via
	 *                            WP_Widget::form().
	 * @param array $old_instance Old settings for this instance.
	 *
	 * @return array Settings to save or bool false to cancel saving.
	 * @since 2.8.0
	 *
	 */
	public function update( $new_instance, $old_instance ) {
		$instance                             = $old_instance;
		$instance['parsidate_calendar_title'] = esc_html( $new_instance['parsidate_calendar_title'] );
		$instance['theme_color']              = esc_attr( $new_instance['theme-color'] );

return $instance;
	}

/**
	 * Echoes the widget content.
	 *
	 * Subclasses should override this function to generate their widget code.
	 *
	 * @param array $args Display arguments including 'before_title', 'after_title',
	 *                        'before_widget', and 'after_widget'.
	 * @param array $instance The settings for the particular instance of the widget.
	 *
	 * @since 2.8.0
	 *
	 */
	public function widget( $args, $instance ) {
		if ( ! wpp_is_active( 'conv_permalinks' ) ) {
			return;
		}

$theme     = ! empty( $instance['theme_color'] ) ? $instance['theme_color'] : 'light-mode';
		$widget_id = $args['widget_id'];

echo $args['before_widget'];

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

wpp_get_calendar();

echo $args['after_widget'];

if ( $theme === 'dark-mode' ) {
			echo "<style>#$widget_id{background:#141414;border-radius:8px 8px 4px 4px;" .
			     "overflow:hidden;box-shadow:0 0 5px 0 #000;text-align:center;padding-top:15px;color:#dcdcdc}" .
			     "#$widget_id table{direction:rtl;border-radius:12px;overflow:hidden;" .
			     "background:#1d1d1d;box-shadow:inset 0 0 0 6px #141414}#$widget_id table th," .
			     "#$widget_id table td{border:0}#$widget_id table th:last-child," .
			     "#$widget_id table tr td:last-child{color:#f28a8a}</style>";
		} else {
			echo "<style>#$widget_id{background:#dbdbdb;border-radius:12px;overflow:hidden;" .
			     "box-shadow:0 0 15px 0 #0000004f,inset 0 0 0 1px #8080806e;text-align:center;padding-top:15px;" .
			     "color:#1e1e1e}#$widget_id table{direction:rtl;border-radius:9px;overflow:hidden;" .
			     "background:#fdfdfd;box-shadow:0 -13px 14px 0 #8080801a}#$widget_id table th," .
			     "#$widget_id table td{border:0}#$widget_id table th:last-child," .
			     "#$widget_id table tr td:last-child{color:#bf4a4a}</style>";
		}
	}
}

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