disable "deleted files" button if trash bin is empty

apps/files/css/files.css

@@ -24,7 +24,7 @@
 #new>ul>li>p { cursor:pointer; }
 #new>ul>li>form>input { padding:0.3em; margin:-0.3em; }
 
-#trash { height:17px; margin: 0 1em; z-index:1010; float: right; }
+#trash { margin: 0 1em; z-index:1010; float: right; }
 
 #upload {
 	height:27px; padding:0; margin-left:0.2em; overflow:hidden;

apps/files/index.php

@@ -126,6 +126,12 @@ if ($needUpgrade) {
 		$publicUploadEnabled = 'no';
 	}
 
+	$trashEnabled = \OCP\App::isEnabled('files_trashbin');
+	$trashEmpty = true;
+	if ($trashEnabled) {
+		$trashEmpty = \OCA\Files_Trashbin\Trashbin::isEmpty($user);
+	}
+	
 	OCP\Util::addscript('files', 'fileactions');
 	OCP\Util::addscript('files', 'files');
 	OCP\Util::addscript('files', 'keyboardshortcuts');
@@ -136,7 +142,8 @@ if ($needUpgrade) {
 	$tmpl->assign('isCreatable', \OC\Files\Filesystem::isCreatable($dir . '/'));
 	$tmpl->assign('permissions', $permissions);
 	$tmpl->assign('files', $files);
-	$tmpl->assign('trash', \OCP\App::isEnabled('files_trashbin'));
+	$tmpl->assign('trash', $trashEnabled);
+	$tmpl->assign('trashEmpty', $trashEmpty);
 	$tmpl->assign('uploadMaxFilesize', $maxUploadFilesize);
 	$tmpl->assign('uploadMaxHumanFilesize', OCP\Util::humanFileSize($maxUploadFilesize));
 	$tmpl->assign('allowZipDownload', intval(OCP\Config::getSystemValue('allowZipDownload', true)));

apps/files/js/filelist.js

@@ -392,6 +392,7 @@ var FileList={
 							files.removeClass('selected');
 						});
 						procesSelection();
+						checkTrashStatus();
 					} else {
 						$.each(files,function(index,file) {
 							var deleteAction = $('tr').filterAttr('data-file',file).children("td.date").children(".move2trash");

apps/files/js/files.js

@@ -121,10 +121,10 @@ $(document).ready(function() {
 	});
 
 	// Show trash bin
-	$('#trash a').live('click', function() {
+	$('#trash').on('click', function() {
 		window.location=OC.filePath('files_trashbin', '', 'index.php');
 	});
-
+	
 	var lastChecked;
 
 	// Sets the file link behaviour :
@@ -845,3 +845,11 @@ function getUniqueName(name){
 	}
 	return name;
 }
+
+function checkTrashStatus() {
+	$.post(OC.filePath('files_trashbin', 'ajax', 'isEmpty.php'), function(result){
+		if (result.data.isEmpty === false) {
+			$("input[type=button][id=trash]").removeAttr("disabled");
+		}
+	});
+}

apps/files/templates/index.php

@@ -38,9 +38,7 @@
 				</form>
 			</div>
 			<?php if ($_['trash'] ): ?>
-			<div id="trash" class="button">
-				<a><?php p($l->t('Deleted files'));?></a>
-			</div>
+			<input id="trash" type="button" value="<?php p($l->t('Deleted Files'));?>" class="button" <?php $_['trashEmpty'] ? p('disabled') : '' ?>></input>
 			<?php endif; ?>
 			<div id="uploadprogresswrapper">
 				<div id="uploadprogressbar"></div>

apps/files_trashbin/lib/trash.php

@@ -868,5 +868,20 @@ class Trashbin {
 		//Listen to delete user signal
 		\OCP\Util::connectHook('OC_User', 'pre_deleteUser', "OCA\Files_Trashbin\Hooks", "deleteUser_hook");
 	}
+	
+	/**
+	 * @brief check if trash bin is empty for a given user
+	 * @param string $user
+	 */
+	public static function isEmpty($user) {
+
+		$trashSize = self::getTrashbinSize($user);
+
+		if ($trashSize !== false && $trashSize > 0) {
+			return false;
+		}
+
+		return true;
+	}
 
 }