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378 lines
16 KiB
378 lines
16 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* Search widget. Shows the search screen contents.
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* @package chamilo.include.search
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*/
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/**
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* Code
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*/
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require_once __DIR__.'/IndexableChunk.class.php';
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require_once api_get_path(LIBRARY_PATH).'specific_fields_manager.lib.php';
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/**
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* Add some required CSS and JS to html's head.
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*
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* Note that $htmlHeadXtra should be passed by reference and not value,
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* otherwise this function will have no effect and your form will be broken.
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*
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* @param array $htmlHeadXtra A reference to the doc $htmlHeadXtra
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*/
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function search_widget_prepare(&$htmlHeadXtra) {
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$htmlHeadXtra[] = '
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<!-- script type="text/javascript" src="'.api_get_path(WEB_LIBRARY_PATH).'javascript/jquery.autocomplete.js"></script -->
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<script type="text/javascript" src="'.api_get_path(WEB_LIBRARY_PATH).'search/search_widget.js"></script>
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<link rel="stylesheet" type="text/css" href="'.api_get_path(WEB_LIBRARY_PATH).'javascript/jquery.autocomplete.css" />
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<link rel="stylesheet" type="text/css" href="'.api_get_path(WEB_LIBRARY_PATH).'search/search_widget.css" />';
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}
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/**
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* Get one term html select
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*/
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function format_one_specific_field_select($prefix, $sf_term_array, $op, $extra_select_attr = 'size="7" class="sf-select-multiple"') {
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global $charset;
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$multiple_select = '<select '.$extra_select_attr.' title="'.$prefix.'" id="sf-'.$prefix.'" name="sf_'.$prefix.'[]">';
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$all_selected = '';
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if (!empty($_REQUEST['sf_'.$prefix])) {
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if (in_array('__all__', $_REQUEST['sf_'.$prefix])) {
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$all_selected = 'selected="selected"';
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}
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}
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if ($op == 'and') {
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$all_selected_name = get_lang('All');
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} else if ($op == 'or') {
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$all_selected_name = get_lang('Any');
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}
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$multiple_select .= '<option value="__all__" '.$all_selected.' >-- '.$all_selected_name.' --</option>';
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foreach ($sf_term_array as $raw_term) {
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$term = substr($raw_term, 1);
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if (empty($term)) continue;
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$html_term = htmlspecialchars($term, ENT_QUOTES, $charset);
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$selected = '';
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if (!empty($_REQUEST['sf_'.$prefix]) && is_array($_REQUEST['sf_'.$prefix]) && in_array($term, $_REQUEST['sf_'.$prefix])) {
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$selected = 'selected="selected"';
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}
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$multiple_select .= '<option value="'.$html_term.'" '.$selected.'>'.$html_term.'</option>';
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}
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$multiple_select .= '</select>';
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return $multiple_select;
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}
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/**
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* Get terms html selects
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*/
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function format_specific_fields_selects($sf_terms, $op, $prefilter_prefix = '') {
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// Process each prefix type term
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$i = 0;
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$max = count($sf_terms);
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$multiple_selects = '';
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foreach ($sf_terms as $prefix => $sf_term_array) {
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if ($prefix == $prefilter_prefix) continue;
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$multiple_select = '';
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if ($i > 0) {
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//print "+" image
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$multiple_select .= '<td><img class="sf-select-splitter" src="../img/search-big-plus.gif" alt="plus-sign-decoration"/></td>';
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}
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//sorting the array of terms
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$temp = array();
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if (!empty($sf_term_array)) {
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foreach ($sf_term_array as $key => $value) {
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$temp[trim(stripslashes($value['name']))] = $key;
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}
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}
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$temp = array_flip($temp);
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unset($sf_term_array);
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natcasesort($temp);
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$sf_term_array = $temp;
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$sf_copy = $sf_term_array;
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// get specific field name
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$sf_value = get_specific_field_list(array('code' => "'$prefix'"));
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$sf_value = array_shift($sf_value);
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$multiple_select .= '<td><label class="sf-select-multiple-title" for="sf_'.$prefix.'[]">'.$sf_value['name'].'</label><br />';
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$multiple_select .= format_one_specific_field_select($prefix, $sf_term_array, $op, 'multiple="multiple" size="7" class="sf-select-multiple"');
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$multiple_select .= '</td>';
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$multiple_selects .= $multiple_select;
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$i++;
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}
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return $multiple_selects;
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}
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/**
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* Build the normal form.
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*
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* First, natural way.
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*/
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function search_widget_normal_form($action, $show_thesaurus, $sf_terms, $op) {
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$thesaurus_icon = Display::return_icon('thesaurus.gif', get_lang('SearchAdvancedOptions'), array('id'=>'thesaurus-icon'));
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$advanced_options = '<a id="tags-toggle" href="#">'.get_lang('SearchAdvancedOptions').'</a>';
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$display_thesaurus = ($show_thesaurus == true ? 'block' : 'none');
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$help = '<h3>'.get_lang('SearchKeywordsHelpTitle').'</h3>'.get_lang('SearchKeywordsHelpComment');
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$mode = (!empty($_REQUEST['mode']) ? htmlentities($_REQUEST['mode']) : 'gallery');
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$type = (!empty($_REQUEST['type']) ? htmlentities($_REQUEST['type']) : 'normal');
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/**
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* POST avoid long urls, but we are using GET because
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* SortableTableFromArray pagination is done with simple links, so now we
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* could not send a form in pagination
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*/
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if (isset($_GET['action']) && strcmp(trim($_GET['action']), 'search') === 0) {
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$action = 'index.php';
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}
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$navigator_info = api_get_navigator();
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if ($navigator_info['name'] == 'Internet Explorer' && $navigator_info['version'] == '6') {
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$submit_button1 = '<input type="submit" id="submit" value="'.get_lang('Search').'" />';
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$submit_button2 = '<input class="lower-submit" type="submit" value="'.get_lang('Search').'" />';
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$reset_button = '<input type="submit" id="tags-clean" value="'.get_lang('SearchResetKeywords').'" />';
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} else {
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$submit_button1 = '<button class="search" type="submit" id="submit" value="'.get_lang("Search").'" /> '.get_lang('Search').'</button>';
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$submit_button2 = '<button class="search" type="submit" value="'.get_lang('Search').'" />'.get_lang('Search').'</button>';
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$reset_button = '<button class="save" type="submit" id="tags-clean" value="'.get_lang('SearchResetKeywords').'" />'.get_lang('SearchResetKeywords').'</button> ';
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}
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$query = isset($_REQUEST['query']) ? Security::remove_XSS($_REQUEST['query']) : null;
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$form = '<form id="chamilo_search" action="'.$action.'" method="GET">
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<input type="text" id="query" name="query" size="40" value="' . $query.'" />
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<input type="hidden" name="mode" value="'. $mode.'"/>
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<input type="hidden" name="type" value="'. $type.'"/>
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<input type="hidden" name="tablename_page_nr" value="1" />
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'.$submit_button1.'
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<br /><br />';
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$list = get_specific_field_list();
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if (!empty($list)) {
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$form .= '<span class="search-links-box">'.$advanced_options.' </span>
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<div id="tags" class="tags" style="display:'. $display_thesaurus.';">
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<div class="search-help-box">'. $help.'</div>
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<table>
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<tr>';
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$form .= format_specific_fields_selects($sf_terms, $op);
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$or_checked = '';
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$and_checked = '';
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if ($op == 'or') {
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$or_checked = 'checked="checked"';
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} else if ($op == 'and') {
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$and_checked = 'checked="checked"';
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}
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$form .= '</tr>
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<tr>
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<td id="operator-select">
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'. get_lang('SearchCombineSearchWith').':<br />
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<input type="radio" class="search-operator" name="operator" value="or" '. $or_checked.'>'.api_strtoupper(get_lang('Or')).'</input>
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<input type="radio" class="search-operator" name="operator" value="and" '. $and_checked.'>'.api_strtoupper(get_lang('And')).'</input>
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</td>
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<td></td>
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<td>
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<br />
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'.$reset_button.'
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'. $submit_button2.'
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</td>
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</tr>
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</table>
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</div>';
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}
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$form .= '</form>
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<br style="clear: both;"/>';
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return $form;
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}
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/**
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* Build the prefilter form.
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*
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* This type allow filter all other multiple select terms by one term in a dinamic way
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*/
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function search_widget_prefilter_form($action, $show_thesaurus, $sf_terms, $op, $prefilter_prefix = NULL) {
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$thesaurus_icon = Display::return_icon('thesaurus.gif', get_lang('SearchAdvancedOptions'), array('id'=>'thesaurus-icon'));
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$advanced_options = '<a id="tags-toggle" href="#">'.get_lang('SearchAdvancedOptions').'</a>';
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$display_thesaurus = ($show_thesaurus == true ? 'block' : 'none');
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$help = '<h3>'.get_lang('SearchKeywordsHelpTitle').'</h3>'.get_lang('SearchKeywordsHelpComment');
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$mode = (!empty($_REQUEST['mode']) ? htmlentities($_REQUEST['mode']) : 'gallery');
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$type = (!empty($_REQUEST['type']) ? htmlentities($_REQUEST['type']) : 'normal');
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/**
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* POST avoid long urls, but we are using GET because
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* SortableTableFromArray pagination is done with simple links, so now we
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* could not send a form in pagination
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*/
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if (isset($_GET['action']) && strcmp(trim($_GET['action']), 'search') === 0) {
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$action = 'index.php';
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}
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$form = '
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<form id="chamilo_search" action="'. $action.'" method="GET">
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<input type="text" id="query" name="query" size="40" />
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<input type="hidden" name="mode" value="'. $mode.'"/>
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<input type="hidden" name="type" value="'. $type.'"/>
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<input type="hidden" name="tablename_page_nr" value="1" />
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<input type="submit" id="submit" value="'. get_lang("Search").'" />
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<br /><br />';
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$list = get_specific_field_list();
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if (!empty($list)) {
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$form .= ' <span class="search-links-box">'.$thesaurus_icon.$advanced_options.' </span>
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<div id="tags" class="tags" style="display:'. $display_thesaurus.';">
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<div class="search-help-box">'. $help.'</div>
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<table>
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<tr>';
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if (!is_null($prefilter_prefix)) {
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//sorting the array of terms
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$temp = array();
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foreach ($sf_terms[$prefilter_prefix] as $key => $value) {
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$temp[trim(stripslashes($value['name']))] = $key;
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}
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$temp = array_flip($temp);
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unset($sf_term_array);
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natcasesort($temp);
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$sf_term_array = $temp;
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// get specific field name
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$sf_value = get_specific_field_list(array('code' => "'$prefilter_prefix'"));
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$sf_value = array_shift($sf_value);
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$form .= '<label class="sf-select-multiple-title" for="sf_'.$prefix.'[]">'.$icons_for_search_terms[$prefix].' '.$sf_value['name'].'</label><br />';
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$form .= format_one_specific_field_select($prefilter_prefix, $sf_term_array, $op, 'id="prefilter"');
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$form .= format_specific_fields_selects($sf_terms, $op, $prefilter_prefix);
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} else {
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$form .= format_specific_fields_selects($sf_terms, $op);
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}
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$or_checked = '';
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$and_checked = '';
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if ($op == 'or') {
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$or_checked = 'checked="checked"';
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} else if ($op == 'and') {
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$and_checked = 'checked="checked"';
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}
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$form .= '
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</tr>
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<tr>
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<td id="operator-select">
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'. get_lang('SearchCombineSearchWith').':<br />
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<input type="radio" class="search-operator" name="operator" value="or" '. $or_checked.'>'.api_strtoupper(get_lang('Or')).'</input>
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<input type="radio" class="search-operator" name="operator" value="and" '. $and_checked.'>'.api_strtoupper(get_lang('And')).'</input>
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</td>
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<td></td>
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<td>
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<br />
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<input class="lower-submit" type="submit" value="'. get_lang('Search').'" />
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<input type="submit" id="tags-clean" value="'. get_lang('SearchResetKeywords').'" />
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</td>
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</tr>
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</table>
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</div>';
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}
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$form .= '
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</form>
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<br style="clear: both;"/>';
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return $form;
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}
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/**
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* Show search form
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*/
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function display_search_form($action, $show_thesaurus, $sf_terms, $op) {
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$type = (!empty($_REQUEST['type']) ? htmlentities($_REQUEST['type']) : 'normal');
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switch ($type) {
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case 'prefilter':
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$prefilter_prefix = api_get_setting('search_prefilter_prefix');
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$form = search_widget_prefilter_form($action, $show_thesaurus, $sf_terms, $op, $prefilter_prefix);
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break;
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case 'normal':
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default:
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$form = search_widget_normal_form($action, $show_thesaurus, $sf_terms, $op);
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}
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// show built form
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echo $form;
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}
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/**
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* Show the search widget
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*
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* The form will post to index.php by default, you can pass a value to
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* $action to use a custom action.
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* IMPORTANT: you have to call search_widget_prepare() before calling this
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* function or otherwise the form will not behave correctly.
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*
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* @param string $action Just in case your action is not
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* index.php
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*/
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function search_widget_show($action = 'index.php')
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{
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require_once api_get_path(LIBRARY_PATH).'search/ChamiloQuery.php';
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// TODO: load images dinamically when they're avalaible from specific field ui to add
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$groupId = api_get_group_id();
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$sf_terms = array();
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$specific_fields = get_specific_field_list();
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$url_params = array();
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if (($cid = api_get_course_id()) != -1) { // with cid
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// get search engine terms
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$course_filter = chamilo_get_boolean_query(XAPIAN_PREFIX_COURSEID.$cid);
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$dkterms = chamilo_query_simple_query('', 0, 1000, array($course_filter));
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//prepare specific fields names (and also get possible URL param names)
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foreach ($specific_fields as $specific_field) {
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$temp = array();
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if (is_array($dkterms) && count($dkterms) > 0) {
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foreach ($dkterms[1] as $obj) {
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$temp = array_merge($obj['sf-'.$specific_field['code']], $temp);
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}
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}
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$sf_terms[$specific_field['code']] = $temp;
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$url_params[] = 'sf_'.$specific_field['code'];
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unset($temp);
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}
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} else { // without cid
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// prepare specific fields names (and also get possible URL param names)
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foreach ($specific_fields as $specific_field) {
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//get Xapian terms for a specific term prefix, in ISO, apparently
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$sf_terms[$specific_field['code']] = xapian_get_all_terms(1000, $specific_field['code']);
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$url_params[] = 'sf_'.$specific_field['code'];
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}
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}
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echo '<h2>'.get_lang('Search').'</h2>';
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// Tool introduction
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// TODO: Settings for the online editor to be checked (insert an image for example). Probably this is a special case here.
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if (api_get_course_id() !== -1)
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if (!empty($groupId)) {
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Display::display_introduction_section(TOOL_SEARCH.$groupId);
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} else {
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Display::display_introduction_section(TOOL_SEARCH);
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}
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$op = 'or';
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if (!empty($_REQUEST['operator']) && in_array($op, array('or', 'and'))) {
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$op = $_REQUEST['operator'];
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}
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//check if URL params are defined (to see if we show the thesaurus or not)
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$show_thesaurus = false;
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foreach ($url_params as $param) {
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if (isset($_REQUEST[$param]) && is_array($_REQUEST[$param])) {
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$thesaurus_decided = false;
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foreach ($_REQUEST[$param] as $term) {
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if (!empty($term)) {
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$show_thesaurus = true;
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$thesaurus_decided = true;
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break;
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}
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}
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if ($thesaurus_decided) break;
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}
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}
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// create the form
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// TODO: use FormValidator
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display_search_form($action, $show_thesaurus, $sf_terms, $op);
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}
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