Merge pull request 'Show hide save button' (#7) from dev-wahyu into staging

Reviewed-on: ordo/adw-gantt#7

edit-mode/function/function.js

@@ -677,6 +677,7 @@ function batchUpdate(){
 	}).then(function (response) {
 		$("body").removeClass("loading");
 		localStorage.setItem('batchEntity', '');
+        $("#save-activity").hide();
 		sendStorage();
 		refresData();
 	}).catch(function (error) {

edit-mode/function/restActivityLink.js

@@ -10,6 +10,12 @@ gantt.ajax.get({
     }
 }).then(function (xhr) {
     $("body").removeClass("loading");
+    let batchEntity = localStorage.getItem('batchEntity');
+    if (!batchEntity || batchEntity == '') {
+        $("#save-activity").hide();
+    } else {
+        $("#save-activity").show();
+    }
     let data = {};
     let response = xhr.responseText;
     let obj = JSON.parse(response);
@@ -64,6 +70,12 @@ function refresData(id) {
         }
     }).then(function (xhr) {
         $("body").removeClass("loading");
+        let batchEntity = localStorage.getItem('batchEntity');
+        if (!batchEntity || batchEntity == '') {
+            $("#save-activity").hide();
+        } else {
+            $("#save-activity").show();
+        }
         gantt.clearAll();
         let data = {};
         let response = xhr.responseText;
@@ -198,6 +210,7 @@ var dp = gantt.createDataProcessor(function (entity, action, data, id) {
                 toBeSet = [batchEntity]
             }
             localStorage.setItem('batchEntity', JSON.stringify(toBeSet));
+            $("#save-activity").show();
             sendStorage();
             // $("body").addClass("loading");
             // return gantt.ajax.put({