ktwidgets.php

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        $oKTConfig =& KTConfig::getSingleton();

        $sName = $this->sName;
        if (KTUtil::arrayGet($this->aOptions, 'broken_name', false)) {
            $this->sName = 'fFolderId';
        }

        $sPath = KTUtil::addQueryString($sPath, array('code'=>$this->sCode,
                                                      'fFolderId'=>$this->iFolderId,
                                                      'varname' => $sName));

        return $sPath;
    }

    function getCollection() {
        $oCR =& KTColumnRegistry::getSingleton();
        //print '<pre>';
        foreach($this->aCols as $ns) {

            $oCR->getColumn($ns);
        }
        $this->oCollection = unserialize($this->sCollection);
        return $this->oCollection;
    }
}


class KTCoreFolderCollectionWidget extends KTCoreCollectionWidget {
    var $sNamespace = 'ktcore.widgets.foldercollection';
    var $sTemplate = 'ktcore/forms/widgets/collectionframe';


    function configure($aOptions) {

        if (!isset($aOptions['value'])) {
            $aOptions['value'] = KTUtil::arrayGet($aOptions,'folder_id', 1);
        }
        $this->value = $aOptions['value'];


        $collection = new AdvancedCollection();
        $oCR =& KTColumnRegistry::getSingleton();
        $col = $oCR->getColumn('ktcore.columns.title');
        $col->setOptions(array('qs_params'=>array('fMoveCode'=>$sMoveCode,
                                                  'fFolderId'=> $this->value,
                                                  'action'=>'startMove')));
        $collection->addColumn($col);

        $qObj = new FolderBrowseQuery(KTUtil::arrayGet($aOptions,'value'));
        $collection->setQueryObject($qObj);

        $aO = $collection->getEnvironOptions();
        $collection->setOptions($aO);

        $aOptions['collection'] = $collection;
        $aOptions['broken_name'] = $false;

        return parent::configure($aOptions);
    }

    function getDefault() { return $this->value; }
    function setDefault($mValue) {
        if ($mValue != $this->value) {
            $this->oCollection->setQueryObject(new FolderBrowseQuery($mValue));
            $this->value = $mValue;
            $this->aOptions['folder_id'] = $this->value;
            $this->iFolderId = $this->value;
            $this->sCollection = serialize($this->oCollection);
            $_SESSION['collection_widgets'][$this->sCode] = serialize($this);
        }
    }
}

class KTCoreCollectionPage extends KTStandardDispatcher {

    function _generate_breadcrumbs(&$oFolder, $sCode, $aURLParams, $sName = 'fFolderId') {
        $aBreadcrumbs = array();
        $folder_path_names = $oFolder->getPathArray();
        $folder_path_ids = explode(',', $oFolder->getParentFolderIds());
        $folder_path_ids[] = $oFolder->getId();

        if (!empty($folder_path_ids) && empty($folder_path_ids[0]))
        {
			array_shift($folder_path_ids);
        }

        $oRoot = Folder::get(1);
        $folder_path_names = array_merge(array($oRoot->getName()), $folder_path_names);


        foreach (range(0, count($folder_path_ids) - 1) as $index) {
            $id = $folder_path_ids[$index];

            $aParams = kt_array_merge($aURLParams, array('fFolderId'=>$id, 'code'=>$sCode, 'varname'=>$sName));
            $url = KTUtil::addQueryString($_SERVER['PHP_SELF'], $aParams);
            $aBreadcrumbs[] = array('url' => $url, 'name' => $folder_path_names[$index]);
        }

        return $aBreadcrumbs;
    }



    function do_main() {

        $sCode = KTUtil::arrayGet($_REQUEST, 'code');
        $sName = KTUtil::arrayGet($_REQUEST, 'varname','fFolderId');
        $oWidget = unserialize($_SESSION['collection_widgets'][$sCode]);

        $oCollection = $oWidget->getCollection();

        $oFolder = Folder::get(KTUtil::arrayGet($_REQUEST, 'fFolderId', 1));
        if (PEAR::isError($oFolder)) {
            $this->errorRedirectToMain(_kt('Invalid folder selected.'));
            exit(0);
        }

        $aOptions = array('ignorepermissions' => KTBrowseUtil::inAdminMode($this->oUser, $oFolder));
        $oCollection->_queryObj->folder_id = $oFolder->getId();

        $aOptions = $oCollection->getEnvironOptions();
        $aOptions['return_url'] = KTUtil::addQueryString($_SERVER['PHP_SELF'], array('code'=>$sCode, 'varname' => $sName, 'fFolderId' => $oFolder->getId()));

        $oCollection->setOptions($aOptions);

        // add the collection code to the title column QS params

        foreach($oWidget->aCols as $ns) {
            $aColOpts = $oCollection->getColumnOptions($ns);
            $aColOpts['qs_params'] = kt_array_merge(KTUtil::arrayGet($aColOpts, 'qs_params', array()),
                                                    array('code' => $sCode, 'varname' => $sName));
            $oCollection->setColumnOptions($ns, $aColOpts);
        }

        // make the breadcrumbs
        $aBreadcrumbs = $this->_generate_breadcrumbs($oFolder, $sCode, $oWidget->aBCUrlParams, $sName);

        print KTTemplating::renderTemplate('ktcore/forms/widgets/collection',
            array(
                'collection'=> $oCollection,
                'folder' => $oFolder,
                'breadcrumbs' => $aBreadcrumbs,
                'targetname' => $sName,
            )
        );

        exit(0);
    }
}



// based on the selection widget, this carries a mapping array,
// which is converted to JSON and inserted into the output. javascript
// enforces the various relationships between conditional fields.

class KTCoreConditionalSelectionWidget extends KTCoreSelectionWidget {
    var $sNamespace = 'ktcore.widgets.conditionalselection';

    var $sIdMethod;
    var $sLabelMethod;

    var $bIsMaster;
    var $bMappings;

    function _getFieldIdForMetadataId($iMetadata) {
	$sTable = 'metadata_lookup';
	$sQuery = "SELECT document_field_id FROM " . $sTable . " WHERE id = ?";
	$aParams = array($iMetadata);

	$res = DBUtil::getOneResultKey(array($sQuery, $aParams), 'document_field_id');
	if (PEAR::isError($res)) {
	    return false;
	}
	return $res;
    }


    function configure($aOptions) {
        $res = parent::configure($aOptions);
        if (PEAR::isError($res)) {
            return $res;
        }

        $this->sIdMethod = KTUtil::arrayGet($aOptions, 'id_method', 'getId');
        $this->sLabelMethod = KTUtil::arrayGet($aOptions, 'label_method');
        if (empty($this->sLabelMethod)) {
            return PEAR::raiseError(_kt('No label method specified.'));
        }
        $existing_entities = (array) KTUtil::arrayGet($aOptions, 'existing_entities');

        if (empty($this->value)) {
            $this->value = array();
            foreach ($existing_entities as $oEntity) {
                $this->value[] = call_user_func(array(&$oEntity, $this->sIdMethod));
            }
        }

	$this->iField = KTUtil::arrayGet($aOptions, 'field');
	$this->iMasterId = KTUtil::arrayGet($aOptions, 'masterid');

	// if we're the master, we have to build the dependancy array and store it as JSON
	// also, include the javascript
	if(KTUtil::arrayGet($aOptions, 'master', false)) {
	    $this->bMaster = true;
	    $this->aJavascript = array('resources/js/conditional_selection.js');

	    $oFieldset = KTFieldset::get(KTUtil::arrayGet($aOptions, 'fieldset'));
	    $aLookups = array();
	    $aConnections = array();

	    foreach($oFieldset->getFields() as $oField) {
		$c = array();

		foreach($oField->getEnabledValues() as $oMetadata) {
		    $a = array();
		    // print '<pre>';

		    $nvals = KTMetadataUtil::getNextValuesForLookup($oMetadata->getId());
		    if($nvals) {
			foreach($nvals as $i=>$aVals) {
			    $a = array_merge($a, $aVals);

			    foreach($aVals as $id) {
			      $field = $this->_getFieldIdForMetadataId($id);
			      // print 'id ' . $id . ' is in field ' . $field . "<br/>";
			      if(!in_array($field, $c)) {
				$c[] = $field;
			      }
			    }
			}
		    }

		    $aLookups[$oMetadata->getId()] = $a;
		}
		$aConnections[$oField->getId()] = $c;
	    }

	    //exit(0);

	    $oJSON = new Services_JSON;
	    $this->sLookupsJSON = $oJSON->encode($aLookups);
	    $this->sConnectionsJSON = $oJSON->encode($aConnections);
	}


        $new_vocab = array();
        foreach ($this->aVocab as $oEntity) {
            $id = call_user_func(array(&$oEntity, $this->sIdMethod));
            $label = call_user_func(array(&$oEntity, $this->sLabelMethod));
            $new_vocab[$id] = array($label, $oEntity->getId());
        }
        $this->aVocab = $new_vocab;
    }

    function getWidget() {
        $bHasErrors = false;
        if (count($this->aErrors) != 0) { $bHasErrors = true; }

	$this->sTemplate = 'ktcore/forms/widgets/conditional_selection';

        $oTemplating =& KTTemplating::getSingleton();
        $oTemplate = $oTemplating->loadTemplate($this->sTemplate);

        $unselected = KTUtil::arrayGet($this->aOptions, 'unselected_label');
        if (!empty($unselected)) {
            $vocab = array();
            $vocab[] = $unselected;
            foreach ($this->aVocab as $k => $v) {
                $vocab[$k] = $v;
            }
            $this->aVocab = $vocab;
            if (empty($this->value)) {
                $this->value = '0';
            }
        }

        if ($this->bMulti) {
            $this->_valuesearch = array();
            $value = (array) $this->value;
            foreach ($value as $v) {
                $this->_valuesearch[$v] = true;
            }
        }

        $aTemplateData = array(
            'context' => $this,
            'name' => $this->sName,
            'has_id' => ($this->sId !== null),
            'id' => $this->sId,
            'has_value' => ($this->value !== null),
            'value' => $this->value,
            'options' => $this->aOptions,
            'vocab' => $this->aVocab,
	    'lookups' => $this->sLookupsJSON,
	    'connections' => $this->sConnectionsJSON,
	    'master' => $this->bMaster,
	    'masterid' => $this->iMasterId,
	    'field' => $this->iField,
        );
        return $oTemplate->render($aTemplateData);
    }



}