src/Tizen.NUI/src/internal/XamlBinding/NavigationMenu.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.ComponentModel;
   4 using System.Linq;
   5 using Tizen.NUI;
   6 using Tizen.NUI.BaseComponents;
   7
   8 namespace Tizen.NUI.Binding
   9 {
  10         // Mark as internal until renderers are ready for release after 1.0
  11         // [RenderWith(typeof(_NavigationMenuRenderer))]
  12         [EditorBrowsable(EditorBrowsableState.Never)]
  13         internal class NavigationMenu : View, /*INavigationMenuController,*/ IElementConfiguration<NavigationMenu>
  14         {
  15                 readonly List<Page> _targets = new List<Page>();
  16
  17                 readonly Lazy<PlatformConfigurationRegistry<NavigationMenu>> _platformConfigurationRegistry;
  18
  19                 public NavigationMenu()
  20                 {
  21                         _platformConfigurationRegistry = new Lazy<PlatformConfigurationRegistry<NavigationMenu>>(() => new PlatformConfigurationRegistry<NavigationMenu>(this));
  22                 }
  23
  24                 public IEnumerable<Page> Targets
  25                 {
  26                         get { return _targets; }
  27                         set
  28                         {
  29                                 if (_targets.AsEnumerable().SequenceEqual(value))
  30                                         return;
  31
  32                                 foreach (Page page in value)
  33                                 {
  34                                         VerifyTarget(page);
  35                                 }
  36
  37                                 OnPropertyChanging();
  38                                 _targets.Clear();
  39                                 _targets.AddRange(value);
  40                                 OnPropertyChanged();
  41                         }
  42                 }
  43
  44                 public void Add(Page target)
  45                 {
  46                         if (_targets.Contains(target))
  47                                 return;
  48                         VerifyTarget(target);
  49
  50                         OnPropertyChanging("Targets");
  51                         _targets.Add(target);
  52                         OnPropertyChanged("Targets");
  53                 }
  54
  55                 public void Remove(Page target)
  56                 {
  57                         if (_targets.Contains(target))
  58                         {
  59                                 OnPropertyChanging("Targets");
  60                                 if (_targets.Remove(target))
  61                                         OnPropertyChanged("Targets");
  62                         }
  63                 }
  64
  65                 public IPlatformElementConfiguration<T, NavigationMenu> On<T>() where T : IConfigPlatform
  66                 {
  67                         return _platformConfigurationRegistry.Value.On<T>();
  68                 }
  69
  70                 [EditorBrowsable(EditorBrowsableState.Never)]
  71                 public void SendTargetSelected(Page target)
  72                 {
  73                         Navigation.PushAsync(target);
  74                 }
  75
  76                 void VerifyTarget(Page target)
  77                 {
  78                         if (target.Icon == null || string.IsNullOrWhiteSpace(target.Icon.File))
  79                                 throw new Exception("Icon must be set for each page before adding them to a Navigation Menu");
  80                 }
  81         }
  82 }