<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Abstract class for the image upload input transformations plugins
 *
 * @package	   PhpMyAdmin-Transformations
 * @subpackage ImageUpload
 */
if (! defined('PHPMYADMIN')) {
	exit;
}

/* Get the transformations class */
require_once 'libraries/plugins/IOTransformationsPlugin.class.php';

/**
 * Provides common methods for all of the image upload transformations plugins.
 *
 * @package PhpMyAdmin
 */
abstract class ImageUploadTransformationsPlugin extends IOTransformationsPlugin
{
	/**
	 * Gets the transformation description of the specific plugin
	 *
	 * @return string
	 */
	public static function getInfo()
	{
		return __(
			'Image upload functionality which also displays a thumbnail.'
			. ' The options are the width and height of the thumbnail'
			. ' in pixels. Defaults to 100 X 100.'
		);
	}

	/**
	 * Does the actual work of each specific transformations plugin.
	 *
	 * @param string $buffer  text to be transformed
	 * @param array	 $options transformation options
	 * @param string $meta	  meta information
	 *
	 * @return string
	 */
	public function applyTransformation($buffer, $options = array(), $meta = '')
	{
		return $buffer;
	}

	/**
	 * Returns the html for input field to override default textarea.
	 * Note: Return empty string if default textarea is required.
	 *
	 * @param array	 $column			   column details
	 * @param int	 $row_id			   row number
	 * @param string $column_name_appendix the name attribute
	 * @param array	 $options			   transformation options
	 * @param string $value				   Current field value
	 *
	 * @return string the html for input field
	 */
	public function getInputHtml(
		$column, $row_id, $column_name_appendix, $options, $value
	) {
		$html = '';
		$src = '';
		if (!empty($value)) {
			$html = '<input type="hidden" name="fields_prev' . $column_name_appendix
				. '" value="' . bin2hex($value) . '"/>';
			$html .= '<input type="hidden" name="fields' . $column_name_appendix
				. '" value="' . bin2hex($value) . '"/>';
			$src = 'transformation_wrapper.php' . $options['wrapper_link'];
		}
		$html .= '<img src="' . $src . '" width="'
				. (isset($options[0]) ? $options[0] : '100') . '" height="'
				. (isset($options[1]) ? $options[1] : '100') . '" alt="'
				. __('Image preview here') . '"/>';
		$html .= '<br/><input type="file" name="fields_upload'
			. $column_name_appendix . '" accept="image/*" class="image-upload"/>';
		return $html;
	}

	/**
	 * Returns the array of scripts (filename) required for plugin
	 * initialization and handling
	 *
	 * @return array javascripts to be included
	 */
	public function getScripts()
	{
		return array(
			'transformations/image_upload.js'
		);
	}

	/* ~~~~~~~~~~~~~~~~~~~~ Getters and Setters ~~~~~~~~~~~~~~~~~~~~ */

	/**
	 * Gets the transformation name of the specific plugin
	 *
	 * @return string
	 */
	public static function getName()
	{
		return "Image upload";
	}
}
?>
