source: inc/admin/class.dc.filter.php @ 242:57cb73269f1e

<?php
# ***** BEGIN LICENSE BLOCK *****
# This file is part of DotClear "MyPostTypes" plugin.
# Copyright (c) 2010 Bruno Hondelatte, and contributors. 
# Many, many thanks to Olivier Meunier and the Dotclear Team.
# All rights reserved.
#
# MyPostTypes plugin for DC2 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 2 of the License, or
# (at your option) any later version.
# 
# DotClear 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 DotClear; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# ***** END LICENSE BLOCK *****

class dcFilterSet {

     protected $filters;
     protected $form_prefix;
     protected $action;
     protected $hideform;
     protected $columns_form;
     
     public function __construct($action,$form_prefix="f_") {
          $this->form_prefix=$form_prefix;
          $this->filters = array();
          $this->action = $action;
     }

     public function addFilter (Filter $filter) {
          $filter->setFormPrefix($this->form_prefix);
          $this->filters[$filter->id] = $filter;
          return $this;
     }

     // Retrieves filter values from context
     public function setValues ($form_data) {
          $this->hideform = true;
          if (isset($form_data['clear_filters']))
               return;
          foreach ($this->filters as $filter) {
               $filter->setValues ($form_data);
               if ($filter->isEnabled())
                    $this->hideform=false;
          }
          if (isset($form_data['add_filter']) && isset($this->filters[$form_data['add_filter']])) {
               $this->filters[$form_data['add_filter']]->add();
          }
     }
     
     public function setColumnsForm($html)
     {
          $this->columns_form = $html;
     }
     
     public function getFormFieldsAsHidden() {
          $ret='';
          foreach ($this->filters as $filter) {
               $ret.= $filter->getFormFieldAsHidden();
          }
          return $ret;
     }

     public function getForm($action,$extra_content,$method="get",$nb_cols=3) {
          $ret = '';
          /*if ($this->hideform) {
               $ret .= '<p><a id="filter-control" class="form-control" href="#">'.
               __('Filters').'</a></p>';
          }*/
          $ret .= '<p><img alt="" src="minus.png"/> <a href="#" id="toggle-filters">'.__('Toggle filters and display options').'</a></p>';
          $ret .=
               '<div class="two-cols">'.
               '<form id="filters" action="'.$this->action.'" method="get" id="filters-form">'.
               '<div class="col70">'.
               '<h3>'.__('Entries filters').'</h3>';
               
          $count=0;
          $form_combo=array();
          $form_combo['-']='';
          foreach ($this->filters as $filter) {
               if ($filter->isEnabled()) {
                    $ret .= $filter->getFormLine();
               }
               $form_combo[$filter->desc]=$filter->id;
               $count++;
          }
          $ret .= 
               '<p class="clear"><input class="delete" type="submit" value="'.__('Delete all filters').'" name="clear_filters"></p>'.
               '<h3 class="margintop">'.__('Add a filter').'</h3>'.
               '<p id="available_filters">'.
               form::combo("add_filter",$form_combo).
               '<input type="submit" value=" + " title="'.__('Add this filter').'" name="apply">'.
               '</p>'.
               '</div>'.
               '<div class="col30">'.
               $this->columns_form.
               '</div>'.
               '<p class="clear margintop"><input type="submit" value="'.__('Apply filters and display options').'" name="apply"></p>'.

               '</form></div>';
          return $ret;
     }

     public function header() {
          return dcPage::jsLoad('js/filters.js');
     }
     public function display() {
          echo $this->getForm("#","");
     }

     public function applyFilters($params) {
          $filtered = false;
          foreach ($this->filters as $filter) {
               if ($filter->isEnabled()) {
                    $filter->applyFilter($params);
                    $filtered = true;
               }
          }
          return $filtered;
     }
     
}


abstract class Filter {
     public $id;
     public $desc;
     protected $request_param;
     protected $enabled;
     protected $values;
     public $field_id;
     
     
     public function __construct ($id,$desc,$request_param) {
          $this->id = $id;
          $this->desc = $desc;
          $this->request_param = $request_param;
          $this->enabled=false;
          $this->values = array();
          $this->field_id = $this->id;
     }
     
     protected function getFieldId($pos=0) {
          if ($pos == 0) {
               return $this->field_id;
          } else {
               return $this->field_id.'_'.$pos;
          }
     }
     
     public function isEnabled() {
          return $this->enabled;
     }
     
     public function add() {
          $this->enabled = true;
     }
     
     public function setFormPrefix($prefix) {
          $this->field_id = $prefix.$this->id;
     }
     
     public abstract function getType();
     
     public function getFormFields() {
          return '';
     }

     public function setValues($form_data) {
/*        if (isset($form_data['c_'.$this->field_id])) {
               $this->enabled = true;
          }*/
          $count=0;
          while (isset($form_data[$this->getFieldId($count)])) {
               if (!isset($form_data['del_'.$this->getFieldId($count)])) {
                    $this->values[] = $form_data[$this->getFieldId($count)];
                    $this->enabled = true;
               }
               $count++;
          }
     }
     
     public function getFormFieldAsHidden () {
          $ret='';
          for ($cur=0; $cur < count($this->values); $cur++) {
               $ret .= form::hidden($this->getFieldId($cur), $this->values[$cur]);
          }
     }
     public function getFormLine() {
          $ret="";
          for ($cur=0; $cur < count($this->values); $cur++) {
               $ret .= '<p id="'.$this->getFieldId($cur).'" class="line" title="'.$this->desc.'">'.
                    $this->getFormFields($cur).
                    '<input id="del_'.$this->getFieldId($cur).'" class="delete" '.
                    'type="submit" title="Delete this filter" value=" - " name="del_'.$this->getFieldId($cur).'"/>'.
                    '</p>';
          }
          return $ret;
     }
     
     public function applyFilter($params) {
     }
     
}

class comboFilter extends Filter {
     protected $options;
     protected $default;
     protected $no_value;
     protected $verb;
     protected $extra;
     
     public function __construct($id,$desc,$request_param,$options,$extra=array()) {
          parent::__construct($id,$desc,$request_param);
          $this->options = $options;
          $this->extra = $extra;
          $this->desc = $desc;
          $this->verb = "is";
          $this->values=array();
     }
     
     public function add() {
          parent::add();
          if (isset($this->extra['singleval']) && (count($this->values) > 0))
               return;
          $this->values[]=current($this->options);
     }
     
     public function getType() {
          return "combo";
     }
     
     public function setValues($form_data) {
          parent::setValues($form_data);
          if (isset($form_data[$this->field_id."_v"])) {
               $this->verb = $form_data[$this->field_id."_v"] == 'is' ? 'is' : 'isnot';
          }
     }

     public function getFormFieldAsHidden () {
          return parent::getFormFieldAsHidden().form::hidden($this->field_id."_v",$this->verb);
     }

     public function getFormFields($pos=0) {
          
          if ($pos == 0) {
               $desc = $this->desc.' : ';
               $labelclass="";
          } else {
               $desc = __('or');
               $labelclass = ' class="or"';
          };
          return '<label for="'.$this->getFieldId($pos).'"'.$labelclass.'>'.$desc.'</label>'.
               (($pos == 0) ?form::combo($this->field_id.'_v',array(__('is')=>'is',__('is not')=>'isnot'),$this->verb) : '').
               form::combo($this->getFieldId($pos),$this->options,$this->values[$pos]);
     }
     
     public function applyFilter($params) {
          if (isset($this->extra['singleval']))
               $params[$this->request_param]=$this->values[0];
          else
               $params[$this->request_param]=$this->values;
     }
}
?>