/
NavigationObjectCountController.cs
43 lines (42 loc) · 1.86 KB
/
NavigationObjectCountController.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
using System;
using System.Collections.Generic;
using System.Net;
using System.Text;
using DevExpress.Data.Filtering;
using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Model;
using DevExpress.ExpressApp.SystemModule;
using dxTestSolution.Module.BusinessObjects;
namespace ItemCount.Module.Controllers {
public class NavigationObjectCountController : WindowController {
private ShowNavigationItemController navigationController;
protected override void OnFrameAssigned() {
UnsubscribeFromEvents();
base.OnFrameAssigned();
navigationController = Frame.GetController<ShowNavigationItemController>();
if(navigationController != null) {
navigationController.NavigationItemCreated += NavigationItemCreated;
}
}
void NavigationItemCreated(object sender, NavigationItemCreatedEventArgs e) {
var lvId = Application.GetListViewId(typeof(Email));
if(e.ModelNavigationItem.Id == lvId) {
using(IObjectSpace objectSpace = Application.CreateObjectSpace(typeof(Email))) {
IModelListView modelListView = (IModelListView)e.ModelNavigationItem.View;
int objectsCount = objectSpace.GetObjectsCount(typeof(Email), CriteriaOperator.Parse(modelListView.Criteria));
e.NavigationItem.Caption = "Inbox" + (objectsCount > 0 ? $" ({objectsCount})" : string.Empty);
}
}
}
private void UnsubscribeFromEvents() {
if(navigationController != null) {
navigationController.NavigationItemCreated -= NavigationItemCreated;
navigationController = null;
}
}
protected override void Dispose(bool disposing) {
UnsubscribeFromEvents();
base.Dispose(disposing);
}
}
}