Viewing file:  ItemEdit.inc (15.78 KB) -rw-r--r--
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<?php
/*
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2007 Bharat Mediratta
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
/**
* This controller will handle the editing of an item
* @package GalleryCore
* @subpackage UserInterface
* @author Bharat Mediratta <bharat@menalto.com>
* @version $Revision: 15513 $
*/
class ItemEditController extends GalleryController {
/**
* @see GalleryController::handleRequest
*/
function handleRequest($form) {
global $gallery;
$editPlugin = GalleryUtilities::getRequestVariables('editPlugin');
$itemId = (int)GalleryUtilities::getRequestVariables('itemId');
/* Load the item */
list ($ret, $item) = GalleryCoreApi::loadEntitiesById($itemId);
if ($ret) {
return array($ret, null);
}
if (!GalleryUtilities::isA($item, 'GalleryItem')) {
/* Invalid itemId given, return MISSING_OBJECT to get standard error page */
return array(GalleryCoreApi::error(ERROR_MISSING_OBJECT), null);
}
/* Make sure we have permission to edit this item */
$ret = GalleryCoreApi::assertHasItemPermission($item->getId(), 'core.edit');
if ($ret) {
return array($ret, null);
}
/* Check to see if we have a preferred source */
list ($ret, $preferredTable) =
GalleryCoreApi::fetchPreferredsByItemIds(array($item->getId()));
if ($ret) {
return array($ret, null);
}
$preferred = empty($preferredTable) ? null : array_shift($preferredTable);
/* Load the thumbnail */
list ($ret, $thumbnails) = GalleryCoreApi::fetchThumbnailsByItemIds(array($item->getId()));
if ($ret) {
return array($ret, null);
}
$thumbnail = empty($thumbnails) ? null : array_shift($thumbnails);
/* Get all the edit options */
list ($ret, $optionInstances) =
ItemEditOption::getAllOptions($editPlugin, $item, $thumbnail);
if ($ret) {
return array($ret, null);
}
/* Load the correct edit plugin */
list ($ret, $plugin) =
GalleryCoreApi::newFactoryInstanceById('ItemEditPlugin', $editPlugin);
if ($ret) {
return array($ret, null);
}
if (!isset($plugin)) {
return array(GalleryCoreApi::error(ERROR_BAD_PARAMETER), null);
}
$status = array();
list ($ret, $error, $status['editMessage'], $requiresProgressBar) =
$plugin->handleRequest($form, $item, $preferred);
if ($ret) {
return array($ret, null);
}
if (!empty($requiresProgressBar)) {
$results['delegate']['view'] = 'core.ProgressBar';
}
/* Now let each option process its data */
if (!isset($status['warning'])) {
$status['warning'] = array();
}
if (isset($form['action']['save'])) {
$progressBarOptions = array();
foreach ($optionInstances as $option) {
if ($option->requiresProgressBar($form)) {
$progressBarOptions[] = $option;
} else {
list ($ret, $optionErrors, $optionWarnings) =
$option->handleRequestAfterEdit($form, $item, $preferred);
if ($ret) {
return array($ret, null);
}
$error = array_merge($error, $optionErrors);
$status['warning'] = array_merge($status['warning'], $optionWarnings);
}
}
if (empty($error) && $progressBarOptions) {
$templateAdapter =& $gallery->getTemplateAdapter();
$templateAdapter->registerTrailerCallback(
array($this, 'runProgressBarOptions'),
array($progressBarOptions, $form, $item, $preferred, $status, $editPlugin));
$results['delegate']['view'] = 'core.ProgressBar';
}
}
if (empty($results['delegate'])) {
/* It's not a progress bar view */
if (empty($error)) {
$results['redirect'] = array('view' => 'core.ItemAdmin',
'subView' => 'core.ItemEdit',
'editPlugin' => $editPlugin,
'itemId' => $item->getId());
} else {
$results['delegate']['view'] = 'core.ItemAdmin';
$results['delegate']['subView'] = 'core.ItemEdit';
$results['delegate']['editPlugin'] = $editPlugin;
}
}
$results['status'] = $status;
$results['error'] = $error;
return array(null, $results);
}
function runProgressBarOptions($options, $form, $item, $preferred, $status, $editPlugin) {
global $gallery;
$templateAdapter =& $gallery->getTemplateAdapter();
$error = array();
foreach ($options as $option) {
list ($ret, $optionErrors, $optionWarnings) =
$option->handleRequestAfterEdit($form, $item, $preferred);
if ($ret) {
return $ret;
}
$error = array_merge($error, $optionErrors);
$status['warning'] = array_merge($status['warning'], $optionWarnings);
}
$session =& $gallery->getSession();
$redirect = array();
$redirect['view'] = 'core.ItemAdmin';
$redirect['subView'] = 'core.ItemEdit';
$redirect['itemId'] = $item->getId();
$redirect['editPlugin'] = $editPlugin;
$redirect['statusId'] = $session->putStatus($status);
$urlGenerator =& $gallery->getUrlGenerator();
$templateAdapter->completeProgressBar($urlGenerator->generateUrl($redirect));
return null;
}
}
/**
* This view will show options to edit an item
*/
class ItemEditView extends GalleryView {
/**
* @see GalleryView::loadTemplate
*/
function loadTemplate(&$template, &$form) {
global $gallery;
$editPlugin = GalleryUtilities::getRequestVariables('editPlugin');
list ($ret, $item, $wasSpecified) = $this->getItem();
if ($ret) {
return array($ret, null);
}
/* Make sure we have permission to edit this item */
$ret = GalleryCoreApi::assertHasItemPermission($item->getId(), 'core.edit');
if ($ret) {
return array($ret, null);
}
/* Load the thumbnail */
list ($ret, $thumbnails) = GalleryCoreApi::fetchThumbnailsByItemIds(array($item->getId()));
if ($ret) {
return array($ret, null);
}
if (!empty($thumbnails)) {
list ($ret, $thumbnail) = GalleryCoreApi::rebuildDerivativeCacheIfNotCurrent(
$thumbnails[$item->getId()]->getId());
if ($ret) {
/* Ignore thumbnail errors so we can edit items with broken thumbnail */
}
} else {
$thumbnail = null;
}
/* Get the edit plugins that support this item type */
list ($ret, $allPluginIds) =
GalleryCoreApi::getAllFactoryImplementationIds('ItemEditPlugin');
if ($ret) {
return array($ret, null);
}
$pluginInstances = array();
foreach (array_keys($allPluginIds) as $pluginId) {
list ($ret, $plugin) =
GalleryCoreApi::newFactoryInstanceById('ItemEditPlugin', $pluginId);
if ($ret) {
return array($ret, null);
}
if ($plugin->isSupported($item, $thumbnail)) {
$pluginInstances[$pluginId] = $plugin;
}
}
/* Define the first edit plugin as the default in case we need to fall back. */
$editPluginIds = array_keys($pluginInstances);
$defaultEditPlugin = $editPluginIds[0];
/*
* If the plugin is empty get it from the session. If it's empty there, default to the
* first plugin we find. Either way, save the user's preference in the session.
*/
$session =& $gallery->getSession();
$editPluginSessionKey = 'core.view.ItemEdit.editPlugin.' . get_class($item);
if (empty($editPlugin)) {
$editPlugin = $session->get($editPluginSessionKey);
if (empty($editPlugin) || !in_array($editPlugin, array_keys($pluginInstances))) {
$editPlugin = $defaultEditPlugin;
}
}
/* Input validation of the given editPlugin id. */
if (!isset($pluginInstances[$editPlugin])) {
$editPlugin = $defaultEditPlugin;
}
$session->put($editPluginSessionKey, $editPlugin);
/* Get display data for all plugins */
$plugins = array();
foreach ($pluginInstances as $pluginId => $plugin) {
list ($ret, $title) = $plugin->getTitle();
if ($ret) {
return array($ret, null);
}
$plugins[] = array('title' => $title,
'id' => $pluginId,
'isSelected' => ($pluginId == $editPlugin));
}
/* Record our item serial number in the form so that all plugins can use it */
$form['serialNumber'] = $item->getSerialNumber();
$ItemEdit = array();
$ItemEdit['editPlugin'] = $editPlugin;
$ItemEdit['plugins'] = $plugins;
$ItemEdit['itemTypeNames'] = $item->itemTypeName();
$ItemEdit['showEditThumbnail'] = $thumbnail != null;
list ($ret, $ItemEdit['isAdmin']) = GalleryCoreApi::isUserInSiteAdminGroup();
if ($ret) {
return array($ret, null);
}
/* Let the plugin load its template data */
list ($ret, $ItemEdit['pluginFile'], $ItemEdit['pluginL10Domain']) =
$pluginInstances[$editPlugin]->loadTemplate($template, $form, $item, $thumbnail);
if ($ret) {
return array($ret, null);
}
/* Get all the edit options */
list ($ret, $optionInstances) =
ItemEditOption::getAllOptions($editPlugin, $item, $thumbnail);
if ($ret) {
return array($ret, null);
}
/* Now let all options load their template data */
$ItemEdit['options'] = array();
foreach ($optionInstances as $option) {
list ($ret, $entry['file'], $entry['l10Domain']) =
$option->loadTemplate($template, $form, $item, $thumbnail);
if ($ret) {
return array($ret, null);
}
if (!empty($entry['file'])) {
$ItemEdit['options'][] = $entry;
}
}
$template->setVariable('ItemEdit', $ItemEdit);
$template->setVariable('controller', 'core.ItemEdit');
return array(null, array('body' => 'modules/core/templates/ItemEdit.tpl'));
}
/**
* @see GalleryView::getViewDescription
*/
function getViewDescription() {
global $gallery;
list ($ret, $item) = $this->getItem();
if ($ret) {
return array($ret, null);
}
list ($ret, $core) = GalleryCoreApi::loadPlugin('module', 'core');
if ($ret) {
return array($ret, null);
}
$itemTypeNames = $item->itemTypeName(true);
return array(null,
$core->translate(array('text' => 'edit %s', 'arg1' => $itemTypeNames[1])));
}
}
/**
* Interface for plugins to the ItemEdit view and controller
* @abstract
*/
class ItemEditPlugin {
/**
* Does this plugin support the given item type?
*
* @param object GalleryItem $item
* @param object GalleryDerivative $thumbnail item's thumbnail
* @return boolean true if it's supported
*/
function isSupported($item, $thumbnail) {
return false;
}
/**
* Load the template with data from this plugin
* @see GalleryView::loadTemplate
*
* @param object GalleryTemplate $template
* @param array $form the form values
* @param object GalleryItem $item
* @param object GalleryDerivative $thumbnail item's thumbnail
* @return array object GalleryStatus a status code
* string the path to a template file to include
* string localization domain for the template file
*/
function loadTemplate(&$template, &$form, $item, $thumbnail) {
return array(GalleryCoreApi::error(ERROR_UNIMPLEMENTED), null, null);
}
/**
* Let the plugin handle the incoming request
* @see GalleryController::handleRequest
*
* @param array $form the form values
* @param object GalleryItem $item
* @param object GalleryDerivative $preferred item's preferred derivative, if there is one
* @return array object GalleryStatus a status code
* array error messages
* string localized status message
* boolean true if progress bar is needed
*/
function handleRequest($form, &$item, &$preferred) {
return array(GalleryCoreApi::error(ERROR_UNIMPLEMENTED),
null, null, null);
}
/**
* Return a localized title for this plugin, suitable for display to the user
*
* @return array object GalleryStatus a status code
* string localized title
*/
function getTitle() {
return array(GalleryCoreApi::error(ERROR_UNIMPLEMENTED), null);
}
/**
* Check to see if a given operation is available for any of a set of mime types
*
* @param string $operation the operation (eg. 'rotate' or 'scale')
* @param array $mimeTypes
* @return array object GalleryStatus a status code
* bool true if any of the mime types are supported
* @access protected
*/
function _checkForOperation($operation, $mimeTypes) {
foreach (array_unique($mimeTypes) as $mimeType) {
list ($ret, $toolkit) = GalleryCoreApi::getToolkitByOperation($mimeType, $operation);
if ($ret) {
return array($ret, null);
}
if (isset($toolkit)) {
break;
}
}
return array(null, isset($toolkit));
}
}
/**
* Interface for options to the ItemEdit view and controller.
* Options allow us to provide extra UI in the views and extra processing in the controller so
* that we can add new functionality to various ItemEditPlugins
* @abstract
*/
class ItemEditOption {
/**
* Return all the available option plugins
*
* @param string $editPlugin name of ItemEditPlugin
* @param object GalleryItem $item
* @param object GalleryDerivative $thumbnail
* @return array object GalleryStatus a status code
* array object ItemEditOption instances
* @static
*/
function getAllOptions($editPlugin, $item, $thumbnail) {
list ($ret, $allOptionIds) =
GalleryCoreApi::getAllFactoryImplementationIdsWithHint('ItemEditOption', $editPlugin);
if ($ret) {
return array($ret, null);
}
$optionInstances = array();
foreach (array_keys($allOptionIds) as $optionId) {
list ($ret, $option) =
GalleryCoreApi::newFactoryInstanceById('ItemEditOption', $optionId);
if ($ret) {
return array($ret, null);
}
list ($ret, $isAppropriate) = $option->isAppropriate($item, $thumbnail);
if ($ret) {
return array($ret, null);
}
if ($isAppropriate) {
$optionInstances[$optionId] = $option;
}
}
return array(null, $optionInstances);
}
/**
* Load the template with data from this plugin
* @see GalleryView::loadTemplate
*
* @param object GalleryTemplate $template
* @param array $form the form values
* @param object GalleryItem $item
* @return array object GalleryStatus a status code
* string the path to a template file to include
* string localization domain for the template file
*/
function loadTemplate(&$template, &$form, $item, $thumbnail) {
return array(GalleryCoreApi::error(ERROR_UNIMPLEMENTED), null, null);
}
/**
* Let the plugin handle the incoming request. We expect the $item to be locked.
* @see GalleryController::handleRequest
*
* @param array $form the form values
* @param object GalleryItem $item reference to the item
* @param object GalleryDerivative $preferred reference to preferred derivative
* @return array object GalleryStatus a status code
* array error messages
* array localized warning messages
*/
function handleRequestAfterEdit($form, &$item, &$preferred) {
return array(GalleryCoreApi::error(ERROR_UNIMPLEMENTED), null, null);
}
/**
* Is this option appropriate at this time?
*
* @param object GalleryItem $item
* @param object GalleryDerivative $thumbnail
* @return array object GalleryStatus a status code
* boolean true or false
*/
function isAppropriate($item, $thumbnail) {
return array(null, false);
}
/**
* Will this task run so long that it requires a progress bar?
*
* @param array $form the state of the current form
* @return boolean
*/
function requiresProgressBar($form) {
return false;
}
}
?>
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