Fix horizontal scroll

edit-mode/function/function.js

@@ -637,3 +637,32 @@ function resetActivity() {
 	localStorage.setItem('batchEntity', '');
 	gantt.alert("Actiivity Saved");
 }
+// Function to get the earliest planned start date among all tasks
+function getEarliestTaskDate() {
+	var earliestDate = null;
+	gantt.eachTask(function (task) {
+		var taskStartDate = task.planned_start || task.start_date;
+		if (!earliestDate || task.planned_start < earliestDate) {
+			earliestDate = taskStartDate;
+			if (task.start_date < earliestDate) {
+				earliestDate = task.start_date;
+			}
+		}
+	});
+	return earliestDate;
+}
+
+// Function to get the latest planned end date among all tasks
+function getLatestTaskDate() {
+	var latestDate = null;
+	gantt.eachTask(function (task) {
+		var taskEndDate = task.planned_end || task.end_date;
+		if (!latestDate || task.planned_end > latestDate) {
+			latestDate = taskEndDate;
+			if (task.end_date > latestDate) {
+				latestDate = task.end_date;
+			}
+		}
+	});
+	return latestDate;
+}

edit-mode/function/ganttEvent.js

@@ -168,11 +168,11 @@ gantt.attachEvent("onGanttScroll", function (left, top){
     var max_allowed_date = gantt.date.add(gantt.config.end_date, -1, "day");
     
     var repaint = false;
-    if (+left_date <= +min_allowed_date){
+      if (earliest && +left_date <= +min_allowed_date && +left_date >= +earliest){
         gantt.config.start_date = gantt.date.add(gantt.config.start_date, -1, "day");
         repaint = true;
     }
-    if (+right_date >= +max_allowed_date){
+      if (latest && +right_date >= +max_allowed_date && +right_date <= +latest){
         gantt.config.end_date = gantt.date.add(gantt.config.end_date, 1, "day");
         repaint = true;
     }

edit-mode/function/restActivityLink.js

@@ -1,4 +1,6 @@
 let geom = [];
+let latest;
+let earliest;
 $("body").addClass("loading");
 gantt.ajax.get({
     url: `${base_url}activity/${ganttId}/${proyekId}/get`,
@@ -33,6 +35,8 @@ gantt.ajax.get({
         gantt.parse(data);
         getGanttOpen();
         gantt.parse(data);
+        earliest = getEarliestTaskDate();
+        latest = getLatestTaskDate();
     });
 }).catch(function (error) {
     $("body").removeClass("loading");
@@ -77,6 +81,8 @@ function refresData(id) {
             gantt.parse(data);
             getGanttOpen();
             gantt.parse(data);
+            earliest = getEarliestTaskDate();
+            latest = getLatestTaskDate();
         });
         if (id) {
             if (gantt.isTaskExists(id)) {