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<?php

// All EasyGiant code is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
// See COPYRIGHT.txt and LICENSE.txt.

if (!defined('EG')) die('Direct access not allowed!');

//create the HTML of the whole form
class Form_Form {

	public $entry = array(); //associative array containing the entries of the form (objects that inherit the class form_entryModel). Each element of the array corresponds to one field of the table

	public $action = null; //the action of the form
	public $name = null; //the name of the form
	public $className = 'formClass'; //the class of the form
	public $id = null;
	public $submit = array(); //the submit entries array('name'=>'value')
	public $method = 'POST'; //the transmission method: POST/GET

	public function __construct($action,$submit = array('generalAction'=>'save'),$method = 'POST')
	{
		$this->action = $action; //action of the form: controller/action
		$this->submit = $submit;
		$this->method = $method;
	}

	//method to manage the $this->entry associative array
	//entryType: the type of the object to be initialized, $entryName: the name of the entry
	//$options: the list of options (if the entry is a <select> entry)
	public function setEntry($entryName,$entryType,$options = null)
	{
		$entryObjName = 'Form_'.$entryType;
		if (!class_exists($entryObjName))
		{
			throw new Exception("class <b>$entryObjName</b> not defined: the entry <b>$entryName</b> can't be set");
		}
		$this->entry[$entryName] = new $entryObjName($entryName);
		$this->entry[$entryName]->labelString = $entryName.':';
		//set the type
		$this->entry[$entryName]->type = $entryType;
		if (isset($options))
		{
			$this->entry[$entryName]->options = $options;
		}
	}

	//set all the entries
	//$entryStruct : the struct of the entries
	public function setEntries($entryStruct = array())
	{
		foreach ($entryStruct as $name => $entry)
		{
			$type = array_key_exists('type',$entry) ? $entry['type'] : 'InputText';
			$options = array_key_exists('options',$entry) ? $entry['options'] : null;
			$this->setEntry($name,$type,$options);
			
			$entryClass = array_key_exists('entryClass',$entry) ? $entry['entryClass'] : null;
			$labelString = array_key_exists('labelString',$entry) ? $entry['labelString'] : "$name:";
			$idName = array_key_exists('idName',$entry) ? $entry['idName'] : null;
			$className = array_key_exists('className',$entry) ? $entry['className'] : null;
			$labelClass = array_key_exists('labelClass',$entry) ? $entry['labelClass'] : null;
			$defaultValue = array_key_exists('defaultValue',$entry) ? $entry['defaultValue'] : null;
			$wrap = array_key_exists('wrap',$entry) ? $entry['wrap'] : array();
			
			$this->entry[$name]->entryClass = $entryClass;
			$this->entry[$name]->labelString = $labelString;
			$this->entry[$name]->idName = $idName;
			$this->entry[$name]->className = $className;
			$this->entry[$name]->labelClass = $labelClass;
			$this->entry[$name]->defaultValue = $defaultValue;
			$this->entry[$name]->wrap = $wrap;
		}
	}

	//function to create the HTML of the form
	//$values: an associative array ('entryName'=>'value')
	//$subset: subset to print
	public function render($values = null, $subset = null)
	{
		
		if ($values === null)
		{
			$values = array();
			foreach ($this->entry as $key => $value)
			{
				$values[$key] = $value->defaultValue;
			}
		}
		
		$fid = isset($this->id) ? "id='".$this->id."'" : null;
		$fname = isset($this->name) ? "name='".$this->name."'" : null;
		$fclass = isset($this->className) ? "class='".$this->className."'" : null;
		$htmlForm = "<form $fname $fclass $fid action='".Url::getRoot($this->action)."' method='".$this->method."'>\n";

		$subset = (isset($subset)) ? explode(',',$subset) : array_keys($values);
		
		foreach ($subset as $entry)
		{

			if (array_key_exists($entry,$this->entry))
			{
				$value = array_key_exists($entry,$values) ? $values[$entry] : $this->entry[$entry]->defaultValue;
				$htmlForm .= $this->entry[$entry]->render($value);
			}

		}
		
		foreach ($this->submit as $name => $value)
		{
			$htmlForm .= "<div class='inputEntry'>\n<input id='".$name."' type='submit' name='$name' value='$value'>\n</div>\n";
		}
		$htmlForm .= "</form>\n";
		return $htmlForm;
	}

}