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<?php

// EasyGiant, a web software to build a community of people that want to share their hardware information.
// Copyright (C) 2009 - 2010  Antonio Gallo (h-source-copyright.txt)
//
// This file is part of EasyGiant
//
// EasyGiant 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.
// 
// EasyGiant is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with EasyGiant.  If not, see <http://www.gnu.org/licenses/>.

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

//class to manage the scaffold of the controller
class Scaffold
{

	protected $_type = null; //the type of the scaffold. It can be 'main' or 'form'
	protected $_queryType = null; //it can be insert or update

	protected $_primaryKey = null; //the primary key of the table
	protected $_controller = null; //the name of the controller

	public $model = null; //the reference to the model associated with the controller

	public $viewArgs = array(); //the associative array representing the status args of the main action of the controller.

	public $params = array(); //associative array containing the parameters of the scaffold
	public $html = array(); //associative array containing the HTML of the scaffold ('pageList'=>HTML,..)

	public $mainMenu = null; //the reference to the MenuHelper object
	public $pageList = null; //the reference to the PageDivisionHelper object
	public $itemList = null; //the reference to the ListHelper object
	public $popupMenu = null; //the reference to the PopupHelper object

	public $form = null; //the reference to the form object
	public $entries = null; //the entries of the form (string having entries separated by comma)
	public $values = array(); //the values inserted in the form (taken from the table if $this->queryType === 'update' or if an error occured during the databse query, otherwise taken from the $_POST array)
	
	//the list of fields of the select query
	public $fields = null;

	public function __construct($type,$controller,$model,$viewArgs,$params = null) {

		$this->_type = $type;
		$this->_controller = $controller;
		$this->model = $model;
		$this->viewArgs = $viewArgs;

		$autoParams = array(
			'mainAction'		=>	'main',
			'modifyAction'		=>	'form/update',
			'associateAction'	=>	'associate',
			'panelController'	=>	'panel',
			'pageList'			=>	true,
			'pageVariable'		=>	'page',
			'recordPerPage'		=>	10,
			'mainMenu'			=>	'panel,add',
			'formMenu'			=>	'panel,back',
			'postSubmitValue'	=>	'Save',
			'popup'				=>	false,
			'popupType'			=>	'exclusive'
		);

		//set the $this->scaffold->params array
		if (is_array($params)) {
			foreach ($params as $key => $value) {
				$autoParams[$key] = $value;
			}
		}
		$this->params = $autoParams;

	}

	//ad some clauses to the select query
	//whereArray = array ($table_field => $value)
	public function appendWhereQueryClause($whereArray)
	{
		$this->model->appendWhereQueryClause($whereArray);
	}

	//set clauses to the select query
	//whereArray = array ($table_field => $value)
	public function setWhereQueryClause($whereArray)
	{
		$this->model->setWhereQueryClause($whereArray);
	}

	//initialize the main scaffold (ListHelper)
	//$recordList: field of the table to show, $primaryKey: the key of the table
	public function loadMain($recordList,$primaryKey,$theme = 'edit,del')
	{
		$this->_primaryKey = $primaryKey;

		$recordListArray = explode(',',$recordList);
		foreach ($recordListArray as $record) {
			$this->itemList->addItem("simpleText",";$record;");
		}

		$themeArray = explode(',',$theme);

		foreach ($themeArray as $el)
		{
			switch ($el)
			{
				case 'moveup':
					$this->itemList->addItem('moveupForm',$this->_controller.'/'.$this->params['mainAction'],$primaryKey);
					break;
				case 'movedown':
					$this->itemList->addItem('movedownForm',$this->_controller.'/'.$this->params['mainAction'],$primaryKey);
					break;
				case 'link':
					$this->itemList->addItem('associateForm',$this->_controller.'/'.$this->params['associateAction'],$primaryKey);
					break;
				case 'edit':
					$this->itemList->addItem('editForm',$this->_controller.'/'.$this->params['modifyAction'],$primaryKey);
					break;
				case 'del':
					$this->itemList->addItem('delForm',$this->_controller.'/'.$this->params['mainAction'],$primaryKey);
					break;
			}
		}

	}

	//initialize the form
	//$queryType = insert/update
	//$action: the action of the form (controller/action/queryString)
	public function loadForm($queryType,$action,$method = 'POST',$enctype = null)
	{
		$this->queryType = $queryType;
		$submitName = $this->model->getSubmitName($queryType);
		$value = $this->params['postSubmitValue'];
		$viewStatus = Url::createUrl(array_values($this->viewArgs));
		$this->model->setForm($action.$viewStatus,array($submitName => $value),$method,$enctype);
		$this->form = $this->model->form;
	}

	//function to obtain the values to use in the form
	//$func = function to validate the values
	//$id = the id of the record (used if $_POST[$this->m[$this->model]->identifierName] is not present)
	public function getFormValues($func = 'sanitizeHtml',$id = null,$defaultValues = array(),$functionsIfFromDb = array())
	{
		if ($this->_type === 'form')
		{
			$this->values = $this->model->getFormValues($this->queryType,$func,$id,$defaultValues,$functionsIfFromDb);
		}
	}

	//set the head of the table
	//$columnsName: name of the columns. It has to be a comma-separated list of strings
	public function setHead($columnsName)
	{
		$this->itemList->setHead($columnsName);
	}

	//method to set the type of the entries of the form
	//$entries: string containing the list of the entries where each entry is separated by comma: entry1,entry2,entry3
	//$entryType: associative array that describes the entries of the form. The key is the entry name while the value is the entry type (textarea,inputText,etc)
	public function setFormEntries($entries = 'model',$entryType = array(),$optionsArray = array())
	{
		if ($this->_type === 'form')
		{
			if ($entries === 'model')
			{
				$this->entries = $this->model->fields;
				if ($this->queryType === 'update')
				{
					$this->entries .= ','. $this->model->identifierName;
				}
			}
			else
			{
				$this->entries = null;
			}
			$entriesArray = explode(',',$this->entries);
			if (isset($this->form))
			{
				foreach ($entriesArray as $entry)
				{
					$type = isset($entryType[$entry]) ? $entryType[$entry] : 'InputText';
					$options = isset($optionsArray[$entry]) ? $optionsArray[$entry] : null;
					$this->form->setEntry($entry,$type,$options);
				}
				if ($this->queryType === 'update')
				{
					$this->form->setEntry($this->model->identifierName,'Hidden');
				}
			}
			else
			{
				throw new Exception('form object has not been initialized. Call the <b>scaffold->loadForm</b> method before');
			}
		}
	}

	//add an item to the list of items
	public function addItem($type, $action = '', $field = '', $name = '') {
		if ($this->_type === 'main') {
			$this->itemList->addItem($type, $action, $field, $name);
		}
	}

	//update the table
	public function update($methodsList = '',$id = null) {
		$this->model->updateTable($methodsList,$id);
	}

	//method to create the HTML of the scaffold
	//$values: the values to insert in the from entries
	public function render($values = null,$subset = null)
	{

		if ($this->_type === 'main')
		{

			$recordNumber = $this->model->rowNumber();
			
			if (isset($this->viewArgs[$this->params['pageVariable']]))
			{
				$page = $this->viewArgs[$this->params['pageVariable']];
			}
			else
			{
				$this->params['pageList'] = false;
			}
			
			$recordPerPage = $this->params['recordPerPage'];
			
			if ($this->params['pageList'] === true)
			{
				$this->model->limit = $this->pageList->getLimit($page,$recordNumber,$recordPerPage);
				$this->html['pageList'] = $this->pageList->render((int)($page-2),5);
				$position = array($page,$this->pageList->getNumbOfPages());
			}
			else
			{
				$this->model->limit = null;
				$this->html['pageList'] = null;
				$position = array(1,1);
			}

			$values = $this->model->getTable($this->fields);

			$primaryKey = $this->_primaryKey;
			
			//pass the variable position
			$this->itemList->position = $position;
			$this->html['main'] = $this->itemList->render($values);

			$this->html['menu'] = $this->mainMenu->render($this->params['mainMenu']);
			
			$popupHtml = null;
			if ($this->params['popup'] === true)
			{
				$this->html['popup'] = $this->popupMenu->render();
				$popupHtml = "<div class='verticalMenu'>\n".$this->html['popup']."\n</div>\n";
			}

			$this->html['all'] = "<div class='mainMenu'>".$this->html['menu']."</div>\n".$this->model->notice."\n $popupHtml \n<div class='recordsBox'>\n".$this->html['main']."\n</div>\n"."<div class='viewFooter'>\n<div class='pageList'>\n".$this->html['pageList']."</div>\n</div>\n\n";

		}
		else if ($this->_type === 'form')
		{
			
			$subset = (!isset($subset)) ? $this->entries : $subset;
			$values = (!isset($values)) ? $this->values : $values;
			$this->html['menu'] = $this->mainMenu->render($this->params['formMenu']);
			$this->html['main'] = $this->form->render($values,$subset);
			$this->html['all'] = "<div class='mainMenu'>\n".$this->html['menu']."\n</div>\n".$this->model->notice."\n<div class='scaffold_form'>\n".$this->html['main']."</div>\n";

		}
		
		return $this->html['all'];
		
	}

}