ktdocumentlinks.php

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            {
    	        if($iTempParentDocId == $iTempDocId)
    	        {
    	        	$this->errorRedirectToMain(_kt('A document cannot be linked to itself.'));
    	        }
            }
        }

        $this->oPage->setBreadcrumbDetails(_kt("link"));

        $sType = (isset($_REQUEST['linktype'])) ? $_REQUEST['linktype'] : 'internal';
        $sTarget = '';
        $aTarget = array();

        if($sType == 'external'){
            $iParentId = $_REQUEST['fDocumentId'];
            $aTarget['url'] = $_REQUEST['target_url'];
            $aTarget['name'] = $_REQUEST['target_name'];
            $aDocuments = array($iParentId);

            $this->oValidator->validateUrl($aTarget['url']);
            if(empty($aTarget['name'])){
                $aTarget['name'] = $aTarget['url'];
            }
        }else{
            $iParentId = $_REQUEST['fDocumentId'];
            $aDocuments = $_REQUEST['linkselection'];
            if(empty($aDocuments)){
                $this->errorRedirectToMain(_kt('No documents have been selected.'));
                exit;
            }
        }
        $sDocuments = serialize($aDocuments);
        $sTarget = serialize($aTarget);

        // form fields
        $aFields = array();

        $aVocab = array();
        $aLinkTypes = LinkType::getList("id > 0");
        foreach($aLinkTypes as $oLinkType) {
            $aVocab[$oLinkType->getID()] = $oLinkType->getName();
        }

        $aOptions = array('vocab' => $aVocab);
        $aFields[] = new KTLookupWidget(
                _kt('Link Type'),
                _kt('The type of link you wish to use'),
                'fLinkTypeId',
                null,
                $this->oPage,
                true,
                null,
                null,
                $aOptions);

        $aTemplateData = array(
              'context' => $this,
              'parent_id' => $iParentId,
              'target_id' => $sDocuments,
              'target_url' => $sTarget,
              'fields' => $aFields,
        );

        $oTemplate =& $this->oValidator->validateTemplate('ktstandard/action/link_type_select');
        return $oTemplate->render($aTemplateData);
    }

    // make the link
    function do_make_link() {
        $this->oPage->setBreadcrumbDetails(_kt("link"));
        $iParentId = $_REQUEST['fDocumentId'];
        $iLinkTypeId = $_REQUEST['fLinkTypeId'];
        $sDocIds = $_REQUEST['fTargetDocumentId'];
        $aDocIds = unserialize($sDocIds);
        $sTarget = $_REQUEST['fTargetUrl'];
        $aTarget = unserialize($sTarget);

        $oLinkType = LinkType::get($iLinkTypeId);
        if (PEAR::isError($oLinkType)) {
            $this->errorRedirectToMain(_kt('Invalid link type selected.'));
            exit(0);
        }

        $sTargetUrl = '';
        $sTargetName = '';
        if(!empty($aTarget)){
            $sTargetUrl = $aTarget['url'];
            $sTargetName = $aTarget['name'];
        }

        // create document links
        $this->startTransaction();

        if(!empty($aDocIds)){
            foreach ($aDocIds as $iDocId){

                $oDocumentLink =& DocumentLink::createFromArray(array(
                    'iParentDocumentId' => $iParentId,
                    'iChildDocumentId'  => $iDocId,
                    'iLinkTypeId'       => $iLinkTypeId,
                    'sTargetUrl'       => $sTargetUrl,
                    'sTargetName'       => $sTargetName,
                ));

                if (PEAR::isError($oDocumentLink)) {
                    $this->rollbackTransaction();
                    $this->errorRedirectToMain(_kt('Could not create document link'), sprintf('fDocumentId=%d', $iParentId));
                    exit(0);
                }
            }
        }

        $this->commitTransaction();

        $this->successRedirectToMain(_kt('Document link created'), sprintf('fDocumentId=%d', $iParentId));
        exit(0);
    }


    // delete a link
    function do_delete() {
        $this->oPage->setBreadcrumbDetails(_kt("link"));

        // check security
        $oPermission =& KTPermission::getByName('ktcore.permissions.write');
        if (PEAR::isError($oPermission) ||
            !KTPermissionUtil::userHasPermissionOnItem($this->oUser, $oPermission, $this->oDocument)) {
            $this->errorRedirectToMain(_kt('You do not have sufficient permissions to delete a link'), sprintf("fDocumentId=%d", $this->oDocument->getId()));
            exit(0);
        }

        // check validity of things
        $oDocumentLink = DocumentLink::get(KTUtil::arrayGet($_REQUEST, 'fDocumentLinkId'));
        if (PEAR::isError($oDocumentLink)) {
            $this->errorRedirectToMain(_kt('Invalid document link selected.'));
            exit(0);
        }
        $oParentDocument = Document::get(KTUtil::arrayGet($_REQUEST, 'fDocumentId'));
        if (PEAR::isError($oParentDocument)) {
            $this->errorRedirectToMain(_kt('Invalid document selected.'));
            exit(0);
        }

        // do deletion
        $this->startTransaction();

        $res = $oDocumentLink->delete();

        if (PEAR::isError($res)) {
            $this->errorRedirectToMain(_kt('Could not delete document link'), sprintf('fDocumentId=%d', $oParentDocument->getId()));
            exit(0);
        }

        $this->commitTransaction();

        $this->successRedirectToMain(_kt('Document link deleted'), sprintf('fDocumentId=%d', $oParentDocument->getId()));
        exit(0);
    }
}

class KTDocLinkAdminDispatcher extends KTAdminDispatcher {
    var $sHelpPage = 'ktcore/admin/link type management.html';

   // Breadcrumbs base - added to in methods
    function check() {
        return true;
    }

    function do_main() {
        $this->aBreadcrumbs[] = array('name' => _kt('Document Links'));
        $this->oPage->setBreadcrumbDetails(_kt("view"));

        $aLinkTypes =& LinkType::getList('id > 0');

        $addLinkForm = array();
        // KTBaseWidget($sLabel, $sDescription, $sName, $value, $oPage, $bRequired = false, $sId = null, $aErrors = null, $aOptions = null)
        $addLinkForm[] = new KTStringWidget(_kt('Name'), _kt('A short, human-readable name for the link type.'), 'fName', null, $this->oPage, true);
        $addLinkForm[] = new KTStringWidget(_kt('Description'), _kt('A short brief description of the relationship implied by this link type.'), 'fDescription', null, $this->oPage, true);


        $oTemplating =& KTTemplating::getSingleton();
        $oTemplate = $oTemplating->loadTemplate('ktcore/document/admin/linktypesadmin');
        $oTemplate->setData(array(
            "context" => $this,
            "add_form" => $addLinkForm,
            "links" => $aLinkTypes,
        ));
        return $oTemplate;
    }

    function do_edit() {
        $link_id = KTUtil::arrayGet($_REQUEST, 'fLinkTypeId', null, false);
        if ($link_id === null) {
           $this->errorRedirectToMain(_kt("Please specify a link type to edit."));
        }

        $oLinkType =& LinkType::get($link_id);

        $this->aBreadcrumbs[] = array('name' => _kt('Document Links'));
        $this->oPage->setBreadcrumbDetails(_kt("view"));

        $aLinkTypes =& LinkType::getList('id > 0');

        $editLinkForm = array();
        // KTBaseWidget($sLabel, $sDescription, $sName, $value, $oPage, $bRequired = false, $sId = null, $aErrors = null, $aOptions = null)
        $editLinkForm[] = new KTStringWidget(_kt('Name'), _kt('A short, human-readable name for the link type.'), 'fName', $oLinkType->getName(), $this->oPage, true);
        $editLinkForm[] = new KTStringWidget(_kt('Description'), _kt('A short brief description of the relationship implied by this link type.'), 'fDescription', $oLinkType->getDescription(), $this->oPage, true);


        $oTemplating =& KTTemplating::getSingleton();
        $oTemplate = $oTemplating->loadTemplate('ktcore/document/admin/linktypesadmin');
        $oTemplate->setData(array(
            "context" => $this,
            "edit_form" => $editLinkForm,
            "old_link" => $oLinkType,
            "links" => $aLinkTypes,
        ));
        return $oTemplate;
    }


    function do_update() {
        $link_id = KTUtil::arrayGet($_REQUEST, 'fLinkTypeId', null, false);
        if ($link_id === null) {
            $this->errorRedirectToMain(_kt("Please specify a link type to update."));
        }

        $name = KTUtil::arrayGet($_REQUEST, 'fName');
        $description = KTUtil::arrayGet($_REQUEST, 'fDescription');

        if (empty($name) || empty($description)) { // for bonus points, make this go to edit, and edit catch it.
            $this->errorRedirectToMain(_kt('Please enter information for all fields.'));
        }

        $oLinkType =& LinkType::get($link_id);

        $oLinkType->setName($name);
        $oLinkType->setDescription($description);
        $oLinkType->update();

        $this->successRedirectToMain(_kt("Link Type updated."));
    }

    function do_add() {
        $name = KTUtil::arrayGet($_REQUEST, 'fName');
        $description = KTUtil::arrayGet($_REQUEST, 'fDescription');

        if (empty($name) || empty($description)) {
            $this->errorRedirectToMain(_kt('Please enter information for all fields.'));
        }

        $oLinkType = new LinkType($name, $description);
        $oLinkType->create();

        //$oLinkType =& LinkType::createFromArray(array("sName" => $name, "sDescription" => $description));

        $this->successRedirectToMain(_kt("Link Type created."));
    }

    function do_delete() {
        $types_to_delete = KTUtil::arrayGet($_REQUEST, 'fLinksToDelete');         // is an array.

        if (empty($types_to_delete)) {
            $this->errorRedirectToMain(_kt('Please select one or more link types to delete.'));
        }

        $count = 0;
        foreach ($types_to_delete as $link_id) {
            $oLinkType = LinkType::get($link_id);

            $aLinks = DocumentLink::getList(sprintf("link_type_id = %d", $link_id));
            if(!empty($aLinks)){
                foreach($aLinks as $oLink) {
                    $oLink->delete();
                }
            }

            $oLinkType->delete(); // technically, this is a bad thing
            $count += 1;
        }

        //$oLinkType =& LinkType::createFromArray(array("sName" => $name, "sDescription" => $description));

        $this->successRedirectToMain($count . " " . _kt("Link types deleted."));
    }


}

$oRegistry =& KTPluginRegistry::getSingleton();
$oRegistry->registerPlugin('KTDocumentLinks', 'ktstandard.documentlinks.plugin', __FILE__);



?>