surveyor_indonesia_gantt/edit-mode/function/ganttEvent.js

gantt.attachEvent("onTaskDblClick", function (id, e) {
    return false;
});

gantt.attachEvent("onAfterTaskAdd", function (id, item) {
    if (item.parent && gantt.hasChild()) {
        let parentId = item.parent;
        if (gantt.getTask(parentId).parent_id != null) {
            gantt.getTask(parentId).type = "project";
            gantt.updateTask(parentId);
        }
    }
});

gantt.attachEvent("onTaskRowClick", function (id, row) {
    activityId = id;
    var activity = gantt.getTaskBy("id", id);
    activityName = activity[0]?.name;
});

gantt.ext.inlineEditors.attachEvent("onBeforeEditStart", function (state) {
    let id = parseInt(state.id)
    let ganttData = gantt.getTask(id);
    if (ganttData?.type_activity == "header") {
        return false
    }
    let column = state.columnName
    if (column == "progress" || column == "rencana_biaya") {
        let hasChild = gantt.hasChild(id);
        if (hasChild) {
            return false
        }
    }

    if (column == "cost_actual") {
        let progress = ganttData.progress ? ganttData.progress : 0
        if (progress <= 0) {
            return false
        }
    }
    return true
});

gantt.attachEvent("onBeforeTaskUpdate", function (id, new_item) {
    // format progress
    let progress = new_item.progress;
    if (progress > 100) {
        progress = 100;
    } else if (progress <= 0) {
        progress = 0;
    } else if (progress <= 1 && progress > 0) {
        progress = progress * 100
    }
    progress = progress / 100;
    let task = gantt.getTask(id);
    let link = task.$target;
    // link.length > 0 -> successor
    new_item['progress'] = progress;
    if (editEndDateDurationTriggered) {
        if(link.length == 0){
            new_item['start_date'].setHours(0,0,0);
        }
        new_item['duration'] = new_item['duration'] + (link.length == 0 ? 0 : 1);
        new_item['end_date'] = gantt.calculateEndDate({
            start_date: new_item['start_date'],
            duration: new_item['duration']
        })
        new_item['end_date'].setHours(23, 59, 59);
        if (forceDurationUpdateTriggered) {
            let tempDuration = new_item['duration'] - 1;
            new_item['end_date'] = gantt.calculateEndDate({
                start_date: new_item['start_date'],
                duration: tempDuration
            })
            new_item['end_date'].setHours(23, 59, 59);
        } 

        const dateToCheck = new Date(new_item['end_date']);
        if (gantt.isWorkTime({ date: dateToCheck, hours: false })) {
        } else {
            if (link.length == 0) {
                let duration = gantt.calculateDuration({
                    start_date: new_item['start_date'],
                    end_date: new_item['end_date']
                })
                let endDate = gantt.calculateEndDate({
                    start_date: new_item['start_date'],
                    duration: duration + 1
                })
                endDate.setDate(endDate.getDate() - 1)
                endDate.setHours(23,59,59);
                new_item['end_date'] = endDate
            }
        }
        let newStart = new Date(new_item['start_date']);
        let newEnd = new Date(new_item['end_date']);
        if (new_item['start_date'] && new_item['end_date']) {
            new_item['duration'] = gantt.calculateDuration({
                start_date: newStart,
                end_date: newEnd
            });
        } 
        forceDurationUpdateTriggered = false;
        editEndDateDurationTriggered = false;
    }
});

gantt.attachEvent("onAfterTaskDrag", function (id, mode, e) {
    var task = gantt.getTask(id);
    task.end_date = gantt.calculateEndDate(task);
    gantt.updateTask(id);
});

gantt.attachEvent("onBeforeLinkAdd", function (id, link) {
    //any custom logic here
    let source = link.source;
    let target = link.target;
    let parents = gantt.getParent(source);
    let parentt = gantt.getParent(target);
    let childt = gantt.hasChild(target);
    if (childt) {
        return false;
    }

    if (parents == target) {
        return false;
    }

    if (parentt == source) {
        return false
    }

    return true;
});

gantt.attachEvent("onGanttReady", function () {

});

gantt.attachEvent("onGanttRender", function () {
    if (readOnly && parseInt(readOnly) == 1) {
        gantt.config.readonly = true;
    } else if (readOnly && parseInt(readOnly) == 0) {
        gantt.config.readonly = false;
    } else {
        gantt.config.readonly = true;
    }
});

gantt.attachEvent("onTaskOpened", function (id) {
    setGanttOpen()
});

gantt.attachEvent("onTaskClosed", function (id) {
    setGanttOpen()
});

gantt.attachEvent("onGanttScroll", function (left, top){
  var left_date = gantt.dateFromPos(left)
  var right_date = gantt.dateFromPos(left + gantt.$task.offsetWidth)
  
  gantt.config.start_date = gantt.config.start_date || gantt.getState().min_date;
  gantt.config.end_date = gantt.config.end_date || gantt.getState().max_date;
  
  var min_allowed_date = gantt.date.add(gantt.config.start_date, 1, "day");
  var max_allowed_date = gantt.date.add(gantt.config.end_date, -1, "day");

  var repaint = false;
  if (+left_date <= +min_allowed_date){
    gantt.config.start_date = gantt.date.add(gantt.config.start_date, -1, "day");
    repaint = true;
  }
  if (+right_date >= +max_allowed_date){
    gantt.config.end_date = gantt.date.add(gantt.config.end_date, 1, "day");
    repaint = true;
  }
  
  if (repaint) {
    setTimeout(function(){
      gantt.render()
    },20)
  }
});