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 }