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Filename : customizer-controls.php
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<?php
/**
 * Popularfx Customizer Custom Controls
 *
 */

if ( class_exists( 'WP_Customize_Control' ) ) {
	/**
	 * Custom Control Base Class
	 */
	class Popularfx_Custom_Control extends WP_Customize_Control {
		protected function get_popularfx_resource_url() {
			if( strpos( wp_normalize_path( __DIR__ ), wp_normalize_path( WP_PLUGIN_DIR ) ) === 0 ) {
				// We're in a plugin directory and need to determine the url accordingly.
				return plugin_dir_url( __DIR__ );
			}

			return trailingslashit( get_template_directory_uri() );
		}
	}

	/**
	 * Alpha Color Picker Custom Control
	 *
	 * @author Braad Martin <http://braadmartin.com>
	 * @license http://www.gnu.org/licenses/gpl-3.0.html
	 * @link https://github.com/BraadMartin/components/tree/master/customizer/alpha-color-picker
	 */
	class Popularfx_Customize_Alpha_Color_Control extends Popularfx_Custom_Control {
		/**
		 * The type of control being rendered
		 */
		public $type = 'alpha-color';
		/**
		 * Add support for palettes to be passed in.
		 *
		 * Supported palette values are true, false, or an array of RGBa and Hex colors.
		 */
		public $palette;
		/**
		 * Add support for showing the opacity value on the slider handle.
		 */
		public $show_opacity;
		/**
		 * Enqueue our scripts and styles
		 */
		public function enqueue() {
			wp_enqueue_script( 'wp-color-picker' );
			wp_enqueue_style( 'wp-color-picker' );
			wp_enqueue_script( 'popularfx-customizer-controls' );
		}
		/**
		 * Render the control in the customizer
		 */
		public function render_content() {

			// Process the palette
			if ( is_array( $this->palette ) ) {
				$palette = implode( '|', $this->palette );
			} else {
				// Default to true.
				$palette = ( false === $this->palette || 'false' === $this->palette ) ? 'false' : 'true';
			}

			// Support passing show_opacity as string or boolean. Default to true.
			$show_opacity = ( false === $this->show_opacity || 'false' === $this->show_opacity ) ? 'false' : 'true';

			// Output the label and description if they were passed in.
			if ( isset( $this->label ) && '' !== $this->label ) {
				echo '<span class="customize-control-title">' . sanitize_text_field( $this->label ) . '</span>';
			}
			if ( isset( $this->description ) && '' !== $this->description ) {
				echo '<span class="description popularfx-customize-description">' . sanitize_text_field( $this->description ) . '</span>';
			} ?>
					
				<input class="alpha-color-control" type="text" data-show-opacity="<?php echo $show_opacity; ?>" data-palette="<?php echo esc_attr( $palette ); ?>" data-default-color="<?php echo esc_attr( $this->settings['default']->default ); ?>" <?php $this->link(); ?>  />
			<?php

		}
	}
	
	/**
	 * Switch sanitization
	 *
	 * @param  string		Switch value
	 * @return integer	Sanitized value
	 */
	if ( ! function_exists( 'popularfx_switch_sanitization' ) ) {
		function popularfx_switch_sanitization( $input ) {
			if ( true === $input ) {
				return 1;
			} else {
				return 0;
			}
		}
	}

	/**
	 * Alpha Color (Hex & RGBa) sanitization
	 *
	 * @param  string	Input to be sanitized
	 * @return string	Sanitized input
	 */
	if ( ! function_exists( 'popularfx_hex_rgba_sanitization' ) ) {
		function popularfx_hex_rgba_sanitization( $input, $setting ) {
			if ( empty( $input ) || is_array( $input ) ) {
				return $setting->default;
			}

			if ( false === strpos( $input, 'rgba' ) ) {
				// If string doesn't start with 'rgba' then santize as hex color
				$input = sanitize_hex_color( $input );
			} else {
				// Sanitize as RGBa color
				$input = str_replace( ' ', '', $input );
				sscanf( $input, 'rgba(%d,%d,%d,%f)', $red, $green, $blue, $alpha );
				$input = 'rgba(' . popularfx_in_range( $red, 0, 255 ) . ',' . popularfx_in_range( $green, 0, 255 ) . ',' . popularfx_in_range( $blue, 0, 255 ) . ',' . popularfx_in_range( $alpha, 0, 1 ) . ')';
			}
			return $input;
		}
	}

	/**
	 * Only allow values between a certain minimum & maxmium range
	 *
	 * @param  number	Input to be sanitized
	 * @return number	Sanitized input
	 */
	if ( ! function_exists( 'popularfx_in_range' ) ) {
		function popularfx_in_range( $input, $min, $max ){
			if ( $input < $min ) {
				$input = $min;
			}
			if ( $input > $max ) {
				$input = $max;
			}
			return $input;
		}
	}

}