Improve app-management

- Better error messages

- Translate untranslated strings

Basically picks non-app-dependency related stuff from #4017

lib/app.php

@@ -210,7 +210,8 @@ class OC_App{
 	/**
 	 * @brief enables an app
 	 * @param mixed $app app
-	 * @return bool
+	 * @throws \Exception
+	 * @return void
 	 *
 	 * This function set an app as enabled in appconfig.
 	 */
@@ -228,6 +229,7 @@ class OC_App{
 				}
 			}
 		}
+		$l = OC_L10N::get('core');
 		if($app!==false) {
 			// check if the app is compatible with this version of ownCloud
 			$info=OC_App::getAppInfo($app);
@@ -237,16 +239,15 @@ class OC_App{
 					'App "'.$info['name'].'" can\'t be installed because it is'
 					.' not compatible with this version of ownCloud',
 					OC_Log::ERROR);
-				return false;
+				throw new \Exception($l->t("App can't be installed because it is not compatible with this version of ownCloud."));
 			}else{
 				OC_Appconfig::setValue( $app, 'enabled', 'yes' );
 				if(isset($appdata['id'])) {
 					OC_Appconfig::setValue( $app, 'ocsid', $appdata['id'] );
 				}
-				return true;
 			}
 		}else{
-			return false;
+			throw new \Exception($l->t("No app name specified"));
 		}
 	}
 

settings/ajax/enableapp.php

@@ -3,10 +3,9 @@
 OC_JSON::checkAdminUser();
 OCP\JSON::callCheck();
 
-$appid = OC_App::enable(OC_App::cleanAppId($_POST['appid']));
-if($appid !== false) {
-	OC_JSON::success(array('data' => array('appid' => $appid)));
-} else {
-	$l = OC_L10N::get('settings');	
-	OC_JSON::error(array("data" => array( "message" => $l->t("Could not enable app. ") )));
+try {
+	OC_App::enable(OC_App::cleanAppId($_POST['appid']));
+	OC_JSON::success();
+} catch (Exception $e) {
+	OC_JSON::error(array("data" => array("message" => $e->getMessage()) ));
 }

settings/js/apps.js

@@ -61,7 +61,11 @@ OC.Settings.Apps = OC.Settings.Apps || {
 		if(active) {
 			$.post(OC.filePath('settings','ajax','disableapp.php'),{appid:appid},function(result) {
 				if(!result || result.status !== 'success') {
-					OC.dialogs.alert('Error while disabling app', t('core', 'Error'));
+					if (result.data && result.data.message) {
+						OC.dialogs.alert(result.data.message, t('core', 'Error'));
+					} else {
+						OC.dialogs.alert(t('settings', 'Error while disabling app'), t('core', 'Error'));
+					}
 				}
 				else {
 					element.data('active',false);
@@ -73,16 +77,20 @@ OC.Settings.Apps = OC.Settings.Apps || {
 		} else {
 			$.post(OC.filePath('settings','ajax','enableapp.php'),{appid:appid},function(result) {
 				if(!result || result.status !== 'success') {
-					OC.dialogs.alert('Error while enabling app', t('core', 'Error'));
+					if (result.data && result.data.message) {
+						OC.dialogs.alert(result.data.message, t('core', 'Error'));
+					} else {
+						OC.dialogs.alert(t('settings', 'Error while enabling app'), t('core', 'Error'));
 					}
-				else {
+					element.val(t('settings','Enable'));
+				} else {
 					OC.Settings.Apps.addNavigation(appid);
 					element.data('active',true);
 					element.val(t('settings','Disable'));
 				}
 			},'json')
 			.fail(function() { 
-				OC.dialogs.alert('Error while enabling app', t('core', 'Error'));
+				OC.dialogs.alert(t('settings', 'Error while enabling app'), t('core', 'Error'));
 				element.data('active',false);
 				OC.Settings.Apps.removeNavigation(appid);
 				element.val(t('settings','Enable'));