I need to combine Drag and Drop and Reorder on a DataTable row. I know that there are ways to do this on different columns (like one column for the reorder, the other one for Drag and Drop), but I need to do it on one Element.
I tried different ways, but nothing worked. The Problem is, that once the reordering is triggered, I can't drop it in the area. It always returns to the end of the table.
Getting the mouse position wouldn't work, because i need to make it responsive and usable for mobile devices.
HTML:
<p:fieldset id="availableCarsField" legend="Available Cars">
<p:dataTable id="availableCars"
var="car"
widgetVar="widgetVarAvailableCars"
draggableRows="true"
value="#{dndCarsView.cars}">
<p:column id="dragColumn"style="width:20px;">
<h:outputText id="test" value="#{car.id}"/>
<p:draggable helper="clone" revert="true"/>
</p:column>
</p:dataTable>
</p:fieldset>
<!-- ........................... DROP ...........................-->
<p:fieldset id="selectedCars" legend="Selected Cars">
<p:outputPanel id="dropArea">
<h:outputText value="!!!Drop here!!!"
rendered="#{empty dndCarsView.droppedCars}"
style="font-size:24px;"/>
<p:dataTable id="selectedCarsTable"
var="car"
value="#{dndCarsView.droppedCars}"
rendered="#{not empty dndCarsView.droppedCars}">
<p:column headerText="Id">
<h:outputText value="#{car.id}"/>
</p:column>
</p:dataTable>
</p:outputPanel>
</p:fieldset>
<p:droppable for="selectedCars"
tolerance="touch"
activeStyleClass="ui-state-highlight"
onDrop="handleDrop"
datasource="availableCars">
<p:ajax listener="#{dndCarsView.onCarDrop}"
process="@form"
update="dropArea availableCars"/>
</p:droppable>
JS:
function handleDrop(event, ui) {
var droppedCar = ui.draggable;
droppedCar.fadeOut('fast');
}
Bean (in case it's required):
public class DNDCarsView implements Serializable {
private List<Car> cars;
private List<Car> droppedCars;
@PostConstruct
public void init() {
cars = createCars(9);
droppedCars = new ArrayList<>();
}
public List<Car> createCars(int size) {
List<Car> list = new ArrayList<>();
for (int i = 0; i < size; i++) {
list.add(new Car("" + i, "Brand" + i, i * 2000, "Color" + i));
}
return list;
}
public void onCarDrop(DragDropEvent ddEvent) {
Object car = ddEvent.getData();
droppedCars.add((Car) car);
cars.remove(car);
}
public void onReorder(ReorderEvent event) {
Car car = cars.get(event.getFromIndex());
cars.add(event.getToIndex(), car);
cars.remove(event.getFromIndex());
}
//Getter & Setter
}
Is there anyway to combine these two and get this running?
Thanks in advance
Edit:
I want to reorder the rows inside the DataTable and also be able to drop the dragged row into the fieldset.
Primefaces 6.2.12
JSF 2.2
Edit 2: After month of trying I haven't found a good solution for my problem. Just thought, that I might share this here, if someone else deals with this problem.
I seems like there is no way to realize Drag&Drop in combination with columnreorder on one element (in my case p:column). The problem is, that always the reorderevent is triggered when dragged. When dropped into the droparea, the dragId of the dragged element is null (because we started with the reorder-event but ended with the event for drag and drop)
Due to the fact that I wasn't allowed to change anything which wasn't my class I didn't manage to fix this. I ended up to separate the actions onto two elementes. So I made a drag handle where the user can drag the element into the droparea and realized the reorder on the column.
If I was blind and someone knows an answer to this feel free to write. Maybe it might help someone. At least it would be interesting whether there is a way to do so