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/**
 * Initialize integration settings form fields.
 *
 * @return void
 */
public function init_form_fields() {
	$this->form_fields = array(
		// don't forget to put your other settings here
        
		'customize_button' => array(
			'title'             => __( 'Customize!', 'woocommerce-integration-demo' ),
			'type'              => 'button',
			'custom_attributes' => array(
				'onclick' => "location.href='http://www.woothemes.com'",
			),
			'description'       => __( 'Customize your settings by going to the integration site directly.', 'woocommerce-integration-demo' ),
			'desc_tip'          => true,
		)
	);
}


/**
 * Generate Button HTML.
 *
 * @access public
 * @param mixed $key
 * @param mixed $data
 * @since 1.0.0
 * @return string
 */
public function generate_button_html( $key, $data ) {
	$field    = $this->plugin_id . $this->id . '_' . $key;
	$defaults = array(
		'class'             => 'button-secondary',
		'css'               => '',
		'custom_attributes' => array(),
		'desc_tip'          => false,
		'description'       => '',
		'title'             => '',
	);

	$data = wp_parse_args( $data, $defaults );

	ob_start();
	?>
	<tr valign="top">
		<th scope="row" class="titledesc">
			<label for="<?php echo esc_attr( $field ); ?>"><?php echo wp_kses_post( $data['title'] ); ?></label>
			<?php echo $this->get_tooltip_html( $data ); ?>
		</th>
		<td class="forminp">
			<fieldset>
				<legend class="screen-reader-text"><span><?php echo wp_kses_post( $data['title'] ); ?></span></legend>
				<button class="<?php echo esc_attr( $data['class'] ); ?>" type="button" name="<?php echo esc_attr( $field ); ?>" id="<?php echo esc_attr( $field ); ?>" style="<?php echo esc_attr( $data['css'] ); ?>" <?php echo $this->get_custom_attribute_html( $data ); ?>><?php echo wp_kses_post( $data['title'] ); ?></button>
				<?php echo $this->get_description_html( $data ); ?>
			</fieldset>
		</td>
	</tr>
	<?php
	return ob_get_clean();
}