diff --git a/apps/files/js/filelist.js b/apps/files/js/filelist.js
index 3ee5286a3d..1891cbff5d 100644
--- a/apps/files/js/filelist.js
+++ b/apps/files/js/filelist.js
@@ -2207,29 +2207,6 @@
 				fileNames = [fileNames];
 			}
 
-			function Semaphore(max) {
-				var counter = 0;
-				var waiting = [];
-
-				this.acquire = function() {
-					if(counter < max) {
-						counter++;
-						return new Promise(function(resolve) { resolve(); });
-					} else {
-						return new Promise(function(resolve) { waiting.push(resolve); });
-					}
-				};
-
-				this.release = function() {
-					counter--;
-					if (waiting.length > 0 && counter < max) {
-						counter++;
-						var promise = waiting.shift();
-						promise();
-					}
-				};
-			}
-
 			var moveFileFunction = function(fileName) {
 				var $tr = self.findFileEl(fileName);
 				self.showFileBusyState($tr, true);
@@ -2270,14 +2247,20 @@
 						self.showFileBusyState($tr, false);
 					});
 			};
+			return this.reportOperationProgress(fileNames, moveFileFunction, callback);
+		},
 
-			var mcSemaphore = new Semaphore(10);
+		reportOperationProgress: function (fileNames, operationFunction, callback){
+			var self = this;
+			self._operationProgressBar.showProgressBar(false);
+			var mcSemaphore = new OCA.Files.Semaphore(5);
 			var counter = 0;
 			var promises = _.map(fileNames, function(arg) {
 				return mcSemaphore.acquire().then(function(){
-					moveFileFunction(arg).then(function(){
+					return operationFunction(arg).then(function(){
 						mcSemaphore.release();
 						counter++;
+						self._operationProgressBar.setProgressBarValue(100.0*counter/fileNames.length);
 					});
 				});
 			});
@@ -2286,6 +2269,7 @@
 				if (callback) {
 					callback();
 				}
+				self._operationProgressBar.hideProgressBar();
 			});
 		},
 
@@ -2310,7 +2294,7 @@
 			if (!_.isArray(fileNames)) {
 				fileNames = [fileNames];
 			}
-			_.each(fileNames, function(fileName) {
+			var copyFileFunction = function(fileName) {
 				var $tr = self.findFileEl(fileName);
 				self.showFileBusyState($tr, true);
 				if (targetPath.charAt(targetPath.length - 1) !== '/') {
@@ -2438,11 +2422,8 @@
 							}
 						}
 					});
-			});
-
-			if (callback) {
-				callback();
-			}
+			};
+			return this.reportOperationProgress(fileNames, copyFileFunction, callback);
 		},
 
 		/**
diff --git a/apps/files/js/merged-index.json b/apps/files/js/merged-index.json
index bc505e7603..8d25daa6b3 100644
--- a/apps/files/js/merged-index.json
+++ b/apps/files/js/merged-index.json
@@ -21,6 +21,7 @@
   "sidebarpreviewmanager.js",
   "sidebarpreviewtext.js",
   "detailtabview.js",
+  "semaphore.js",
   "mainfileinfodetailview.js",
   "operationprogressbar.js",
   "detailsview.js",
diff --git a/apps/files/js/operationprogressbar.js b/apps/files/js/operationprogressbar.js
index 0ce532af49..efeea4ad78 100644
--- a/apps/files/js/operationprogressbar.js
+++ b/apps/files/js/operationprogressbar.js
@@ -37,8 +37,16 @@
 			});
 		},
 
-		showProgressBar: function() {
-			$('#uploadprogresswrapper .stop').show();
+		showProgressBar: function(showCancelButton) {
+			if (showCancelButton) {
+				showCancelButton = true;
+			}
+			$('#uploadprogressbar').progressbar({value: 0});
+			if(showCancelButton) {
+				$('#uploadprogresswrapper .stop').show();
+			} else {
+				$('#uploadprogresswrapper .stop').hide();
+			}
 			$('#uploadprogresswrapper .label').show();
 			$('#uploadprogressbar').fadeIn();
 			this.$el.trigger(new $.Event('resized'));
diff --git a/apps/files/js/semaphore.js b/apps/files/js/semaphore.js
new file mode 100644
index 0000000000..044f0af23f
--- /dev/null
+++ b/apps/files/js/semaphore.js
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2018
+ *
+ * This file is licensed under the Affero General Public License version 3
+ * or later.
+ *
+ * See the COPYING-README file.
+ *
+ */
+
+(function(){
+	var Semaphore = function(max) {
+		var counter = 0;
+		var waiting = [];
+
+		this.acquire = function() {
+			if(counter < max) {
+				counter++;
+				return new Promise(function(resolve) { resolve(); });
+			} else {
+				return new Promise(function(resolve) { waiting.push(resolve); });
+			}
+		};
+
+		this.release = function() {
+			counter--;
+			if (waiting.length > 0 && counter < max) {
+				counter++;
+				var promise = waiting.shift();
+				promise();
+			}
+		};
+	};
+
+	OCA.Files.Semaphore = Semaphore;
+
+})();