<?php
/*
	Input.class.php

	Copyright (C) 2015 Sjon Hortensius
	All rights reserved.

	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions are met:

	1. Redistributions of source code must retain the above copyright notice,
	   this list of conditions and the following disclaimer.

	2. Redistributions in binary form must reproduce the above copyright
	   notice, this list of conditions and the following disclaimer in the
	   documentation and/or other materials provided with the distribution.

	THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
	INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
	AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
	AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
	OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	POSSIBILITY OF SUCH DAMAGE.
*/
class Form_Input extends Form_Element
{
	public $column;
	protected $_tagName = 'input';
	protected $_tagSelfClosing = false;
	protected $_attributes = array(
		'class' => array('form-control' => true),
		'name' => null,
		'id' => null,
		'title' => null,
	);
	protected $_title;
	protected $_help;
	protected $_helpParams = array();
	protected $_columnWidth;

	public function __construct($name, $title, $type = 'text', $value = null, array $attributes = array())
	{
		$this->column = new Form_Element;

		$this->_attributes['name'] = $name;
		$this->_attributes['id'] = $name;
		$this->_title = $title;

		if (isset($type))
			$this->_attributes['type'] = $type;

		switch ($type)
		{
			case 'number':
				$attributes += array('min' => 1, 'step' => 1);
			break;
			case 'file':
				unset($this->_attributes['class']['form-control']);
			break;
		}

		if (isset($value))
			$this->_attributes['value'] = $value;

		foreach ($attributes as $name => $value)
			$this->_attributes[$name] = $value;
	}

	public function getTitle()
	{
		return $this->_title;
	}

	public function getValue()
	{
		return $this->_attributes['value'];
	}

	public function getName()
	{
		return $this->_attributes['name'];
	}

	public function setName($nm)
	{
		$this->_attributes['name'] = $nm;
		$this->_attributes['id'] = $nm;
	}

	public function setValue($val)
	{
		$this->_attributes['value'] = $val;
	}

	public function setType($tp)
	{
		$this->_attributes['type'] = $tp;
	}

	public function getId()
	{
		return $this->_attributes['id'];
	}

	public function getType()
	{
		return $this->_attributes['type'];
	}

	public function getTagName()
	{
		return $this->_tagName;
	}

	public function setHelp($help, array $params = array())
	{
		$this->_help = $help;
		$this->_helpParams = $params;

		return $this;
	}

	public function getWidth()
	{
		return $this->_columnWidth;
	}

	public function setWidth($size)
	{
		if ($size < 1 || $size > Form::MAX_INPUT_WIDTH)
			throw new Exception('Incorrect size, pass a number between 1 and '.Form::MAX_INPUT_WIDTH);

		$this->column->removeClass('col-sm-'. $this->_columnWidth);

		$this->_columnWidth = (int)$size;

		$this->column->addClass('col-sm-'. $this->_columnWidth);

		return $this;
	}

	public function setCols($size)
	{
		$this->_attributes['cols'] = $size;

		return $this;
	}

	public function setReadonly()
	{
		$this->_attributes['readonly'] = 'readonly';

		return $this;
	}

	public function setDisabled()
	{
		$this->_attributes['disabled'] = 'disabled';

		return $this;
	}

	public function setIsRequired()
	{
		$this->_attributes['required'] = true;

		return $this;
	}

	public function toggles($selector = null, $type = 'collapse')
	{
		if (isset($selector))
			$this->_attributes['data-target'] = $selector;

		$this->_attributes['data-toggle'] = $type;

		return $this;
	}

	public function setPattern($regexp)
	{
		$this->_attributes['pattern'] = $regexp;

		return $this;
	}

	public function setPlaceholder($text)
	{
		$placeholder_input_types = array('email', 'number', 'password', 'search', 'tel', 'text', 'url');
		if (in_array(strtolower($this->_attributes['type']), $placeholder_input_types))
			$this->_attributes['placeholder'] = $text;

		return $this;
	}

	public function hasAttribute($name)
	{
		// not strict, null should return false as well
		return isset($this->_attributes[$name]);
	}

	public function setIsRepeated()
	{
		$this->_attributes['name'] .= '[]';
		// No I don't like this. Yes it works fine
		$this->_attributes['id'] .= ':'.substr(uniqid(), 9);

		return $this;
	}

	// These methods required by pkg_edit and the wizards that map xml element definitions to Form elements
	public function setOnclick($text)
	{
		if($text)
			$this->_attributes['onclick'] = $text;

		return $this;
	}

	public function setOnchange($text)
	{
		if($text)
			$this->_attributes['onchange'] = $text;

		return $this;
	}

	protected function _getInput()
	{
		return parent::__toString();
	}

	public function __toString()
	{
		$input = $this->_getInput();
		$column = (string)$this->column;

		// Don't add an empty <div>, skip it instead
		if (!isset($this->_help) && '<div>' == $column)
			return (string)$input;

		if (!empty($this->_help))
		{
			/* Strings longer than this will break gettext. */
			if (strlen($this->_help) < 7620) {
				$help = gettext($this->_help);
			} else {
				$help = $this->_help;
			}

			if (!empty($this->_helpParams))
				$help = call_user_func_array('sprintf', array_merge([$help], $this->_helpParams));

			$help = '<span class="help-block">'. $help .'</span>';
		}

		return <<<EOT
	{$column}
		{$input}

		{$help}
	</div>
EOT;
	}
}