WPF-菜單和Tab控件

WPF-菜單和Tab控件

  由於菜單和Tab控件一塊兒用,因此就拿出來一塊寫express

Tab控件

  定義一個名爲ViewItem類,定義Tab的屬性ide

 1 /// <summary>
 2     /// tab  item
 3     /// </summary> 
 4     public class ViewItem
 5     {
 6         /// <summary>
 7         /// 標題
 8         /// </summary>
 9         public string Header
10         {
11             get;
12             set;
13         }
14 
15         /// <summary>
16         /// 主鍵名稱
17         /// </summary>
18         public string KeyName
19         {
20             get;
21             set;
22         }
23 
24         /// <summary>
25         /// the show Control
26         /// </summary>
27         public object ViewControl
28         {
29             get;
30             set;
31         }
32     }

  TabControl用的是Dev的控件,因此先要引用三個Dev的DLL,分別是DevExpress.Xpf.Core,DevExpress,Xpf.Docking,DevExpress.Xpf.Layout.Core。工具

  新建一個UserControl,命名爲MenuControl,在主窗體的Window中須要添加一下引用測試

1         xmlns:dxd="http://schemas.devexpress.com/winfx/2008/xaml/docking"2         xmlns:c="clr-namespace:RemindWin"
3         xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core"
4         Name="MainView_View"

  其中,c引用的是MenuControl所在的文件夾,由於要用到MenuControl,因此須要引用MenuControl所在的文件夾。併爲窗體命名爲「MainView_View」(後面用到)。字體

  定義一個DockPanel,在其的頂端設置菜單欄,內容放TabControl,也能夠在下面放FootBar,這裏省略,主窗體代碼以下:this

 1 <Grid x:Name="MainView">
 2         <DockPanel LastChildFill="True">
 4             <c:MenuControl DockPanel.Dock="Top" HorizontalAlignment="Left"/>
 5             <dxd:DockLayoutManager x:Name="dockManager" UseLayoutRounding="True" AllowCustomization="False">
 6                 <dxd:LayoutGroup Orientation="Vertical" >
 7                     <dxd:DocumentGroup Name="documentContainer" 
 8                                    SelectedTabIndex="{Binding SelectedTabIndex,Mode=TwoWay}"
 9                                    ItemsSource="{Binding ItemList}"
10                                    DestroyOnClosingChildren="False" 
11                                    Background="Azure"
12                                    ClosePageButtonShowMode="InActiveTabPageAndTabControlHeader">
13                         <dxd:DocumentGroup.ItemStyle>
14                             <Style TargetType="dxd:DocumentPanel">
15                                 <Setter Property="CloseCommand" Value="{Binding DataContext.CloseCommand,ElementName=MainView}" />
16                                 <Setter Property="Caption" Value="{Binding Header}"></Setter>
17                                 <Setter Property="AllowFloat" Value="False"></Setter>
18                                 <Setter Property="AllowMaximize" Value="False"></Setter>
19                             </Style>
20                         </dxd:DocumentGroup.ItemStyle>
21                         <dxd:DocumentGroup.ItemContentTemplate>
22                             <DataTemplate>
23                                 <ContentControl Content="{Binding ViewControl}"></ContentControl>
24                             </DataTemplate>
25                         </dxd:DocumentGroup.ItemContentTemplate>
26                     </dxd:DocumentGroup>
27                 </dxd:LayoutGroup>
28             </dxd:DockLayoutManager>
29         </DockPanel>
30     </Grid>

  binding了Model中的ItemList,這是Tab集合,SelectedTabIndex是所選Tab的索引,爲Int型,每一個Tab有一個Close事件,Binding後臺代碼中的CloseCommand事件,屬性Caption,banding了ViewItem中的Header,每一個Tab的內容ContentControl綁定了ViewItem中的ViewControl,其中須要注意Grid的Name與<Setter>裏面的元素一致。spa

  添加主窗體的ViewModel,命名MainViewModel,定義ItemList和SelectedTabIndex(引用了SimpleMvvmToolkit)3d

 1         #region Properties
 2 
 3         //
 4         private ObservableCollection<ViewItem> _itemList = new ObservableCollection<ViewItem>();
 5         /// <summary>
 6         /// Tab頁集合
 7         /// </summary>
 8         public ObservableCollection<ViewItem> ItemList
 9         {
10             get
11             {
12                 return _itemList;
13             }
14             set
15             {
16                 _itemList = value;
17             }
18         }
19 
20         //所選tab索引
21         private int _selectedTabIndex = 0;
22         /// <summary>
23         /// 所選tab索引
24         /// </summary>
25         public int SelectedTabIndex
26         {
27             get
28             {
29                 return _selectedTabIndex;
30             }
31             set
32             {
33                 _selectedTabIndex = value;
34                 NotifyPropertyChanged(x => x.SelectedTabIndex);
35             }
36         }
37 
38         #endregion
View Code

  定義添加Tab的方法,定義了兩個,一個ViewModel是爲類型的方法,一個ViewModel以參數形式的方法,第二種主要是針對一些須要傳參的ViewModel,這裏有一個規則,若是一個須要添加一個已有的Tab頁,會自動跳到該Tab頁,而不是出現兩個同樣的Tab頁,這裏主要依靠KeyName作判斷(也可添加兩個同樣的Tab,代碼需簡單修改)code

 1         /// <summary>
 2         /// 添加Tab頁
 3         /// </summary>
 4         /// <typeparam name="TView">View</typeparam>
 5         /// <typeparam name="KMode">ViewModel</typeparam>
 6         /// <param name="header">對應的標題</param>
 7         /// <param name="systemFunction">View的類型</param>
 8         public void OpenNewItem<TView, KMode>(string header, string systemFunction)
 9             where TView : System.Windows.Controls.UserControl, new()
10             where KMode : new()
11         {
12             string keyName = systemFunction.ToString();
13             var q = ItemList.Where(x => x.KeyName == keyName).FirstOrDefault();
14             int index = 0;
15             if (q == null)
16             {
17                 KMode vModel = new KMode();
18                 TView view = new TView();
19                 ViewItem item = new ViewItem();
20                 item.Header = header;
21                 item.KeyName = keyName;
22                 item.ViewControl = view;
23                 ItemList.Add(item);
24                 view.DataContext = vModel;
25                 index = ItemList.Count() - 1;
26             }
27             else
28             {
29                 index = ItemList.IndexOf(q);
30             }
31             SelectedTabIndex = index;
32         }
33 
34         /// <summary>
35         /// 添加Tab頁
36         /// </summary>
37         /// <typeparam name="TView">View</typeparam>
38         /// <param name="header">對應的標題</param>
39         /// <param name="systemFunction">View的類型</param>
40         /// <param name="_model">可帶參數的ViewModel</param>
41         public void OpenNewItemPara<TView>(string header, string systemFunction,object _model)
42             where TView : System.Windows.Controls.UserControl, new()
43         {
44             string keyName = systemFunction.ToString();
45             var q = ItemList.Where(x => x.KeyName == keyName).FirstOrDefault();
46             int index = 0;
47             if (q == null)
48             {
49                 TView view = new TView();
50                 ViewItem item = new ViewItem();
51                 item.Header = header;
52                 item.KeyName = keyName;
53                 item.ViewControl = view;
54                 ItemList.Add(item);
55                 view.DataContext = _model;
56                 index = ItemList.Count() - 1;
57             }
58             else
59             {
60                 index = ItemList.IndexOf(q);
61             }
62             SelectedTabIndex = index;
63         }

  定義關閉Tab的事件和方法xml

 1         /// <summary>
 2         /// 關閉Tab頁
 3         /// </summary>
 4         public DelegateCommand CloseCommand
 5         {
 6             get
 7             {
 8                 return new DelegateCommand(CloseTab);
 9             }
10         }
11 
12         private void CloseTab()
13         {
14             if (SelectedTabIndex >= 0)
15             {
16                 var q = ItemList[SelectedTabIndex];
17                 ItemList.RemoveAt(SelectedTabIndex);
18                 ((System.Windows.Controls.UserControl)q.ViewControl).DataContext = null;
19                 q.ViewControl = null;
20                 q = null;
21                 GC.Collect();
22                 GC.WaitForPendingFinalizers();
23                 GC.Collect();
24             }
25         }
View Code

  別忘了,在MainWindow.xaml.cs的構造中添加這句話

1 this.DataContext = new MainViewModel();

MenuControl菜單欄

  定義MenuItem

 1     /// <summary>
 2     /// 主菜單項。可添加更多屬性實現菜單的個性配置,如字體、圖片、響應等
 3     /// </summary>
 4     public class MenuItem : ModelBase<MenuItem>
 5     {
 6         public MenuItem(string item)
 7         {
 8             Header = item;
 9             Childrens = new List<MenuItem>();
10         }
11 
12         public MenuItem(string header, string keyName)
13         {
14             Header = header;
15             KeyName = keyName;
16         }
17 
18         /// <summary>
19         /// 菜單名稱,作爲菜單主鍵
20         /// </summary>
21         public string KeyName
22         {
23             get;
24             set;
25         }
26 
27         /// <summary>
28         /// 菜單名
29         /// </summary>
30         public string Header { get; set; }
31 
32         /// <summary>
33         /// 圖片
34         /// </summary>
35         public BitmapImage Icon { get; set; }
36 
37         /// <summary>
38         /// 是否可用
39         /// </summary>
40         private bool m_IsEnabled = true;
41         /// <summary>
42         /// 菜單可用性。判斷權限後設置此屬性實現菜單的可用性控制
43         /// </summary>
44         new public bool IsEnabled
45         {
46             get
47             {
48                 return m_IsEnabled;
49             }
50             set
51             {
52                 m_IsEnabled = value;
53                 NotifyPropertyChanged(x => x.IsEnabled);
54             }
55         }
56 
57         /// <summary>
58         /// 子菜單
59         /// </summary>
60         public List<MenuItem> Childrens { get; set; }
61 
62         /// <summary>
63         /// 事件
64         /// </summary>
65         public DelegateCommand<string> SelectedCommand { get; set; }
66 
67        
68     }
View Code

  在MenuControl中定義各類格式和屬性

 1     <UserControl.Resources>
 2         <HierarchicalDataTemplate x:Key="ItemTemplate"
 3                                   ItemsSource="{Binding Childrens}">
 4             <StackPanel Orientation="Horizontal"  VerticalAlignment="Center">
 5                 <TextBlock Text="{Binding Header}"
 6                        IsEnabled="{Binding IsEnabled}"  VerticalAlignment="Center"/>
 7             </StackPanel>
 8         </HierarchicalDataTemplate>
 9         <ControlTemplate x:Key="MenuSeparatorTemplate">
10             <Separator />
11         </ControlTemplate>
12     </UserControl.Resources>
13 
14     <Menu DockPanel.Dock="Top"
15           VerticalAlignment="Top"
16           ItemsSource="{Binding MenuList}"
17           ItemTemplate="{StaticResource ItemTemplate}">
18 
19         <!-- 菜單背景色-->
20         <Menu.Background>
21             <LinearGradientBrush StartPoint="0,0" EndPoint="0,1.5">
22                 <GradientStop Color="#f2f2f2" Offset="0.5"/>
23                 <GradientStop Color="#F8F9FB" Offset="01"/>
24             </LinearGradientBrush>
25         </Menu.Background>
26         <Menu.ItemContainerStyle>
27             <Style TargetType="MenuItem">
28                 <Setter Property="IsEnabled"
29                         Value="{Binding IsEnabled}" />
30                 <Setter Property="Command"
31                         Value="{Binding SelectedCommand}" />
32                 <Setter Property="CommandParameter"
33                         Value="{Binding Header}" />
34                 <Setter Property="FontSize" Value="14"/>
35                
36                 <Style.Triggers>
37                     <DataTrigger Binding="{Binding }"
38                                  Value="{x:Null}">
39                         <Setter Property="Template"
40                                 Value="{StaticResource MenuSeparatorTemplate}" />
41                     </DataTrigger>
42                 </Style.Triggers>
43 
44             </Style>
45         </Menu.ItemContainerStyle>
46     </Menu>
View Code

  定義菜單的ViewModel,名爲MenuControlModel,定義屬性

 1         #region Properties
 2 
 3         private List<MenuItem> m_MainMenus = new List<MenuItem>();
 4         public List<MenuItem> MenuList
 5         {
 6             get
 7             {
 8                 return m_MainMenus;
 9             }
10             set
11             {
12                 m_MainMenus = value;
13                 NotifyPropertyChanged(x => x.MenuList);
14             }
15         }
16 
17         #endregion

  定義遞歸設置全部菜單的命令

 1         /// <summary>
 2         /// 遞歸設置全部菜單的命令
 3         /// </summary>
 4         /// <param name="Menus"></param>
 5         void SetMenuCommand(List<MenuItem> Menus)
 6         {
 7             foreach (var item in Menus)
 8             {
 9                 item.SelectedCommand = new DelegateCommand<string>(OpenMenu);
10                 if (item.Childrens.Count > 0) SetMenuCommand(item.Childrens);
11             }
12         }

  定義點擊菜單Item時執行的方法,其中第一個判斷是找到主窗體,再進行操做,若是菜單的Name中包含「測試」兩個字符,則使用第一個添加Tab的方法,不然,用第二種。Control_Test和TestModel分別是UserControl和其ViewModel。

 1          /// <summary>
 2         /// 打開方法
 3         /// </summary>
 4         /// <param name="MenuName"></param>
 5         private void OpenMenu(string MenuName)
 6         {
 7             foreach (System.Windows.Window win in System.Windows.Application.Current.Windows)
 8             {
 9                 if (win.Name == "MainView_View")
10                 {
11                     if (MenuName.Contains("測試"))
12                     {
13                         (win.DataContext as MainViewModel).OpenNewItem<UserControls.Control_Test, UserControls.TestModel>(MenuName, MenuName);
14                     }
15                     else
16                     {
17                         UserControls.TestModelSec m = new UserControls.TestModelSec(MenuName);
18                         (win.DataContext as MainViewModel).OpenNewItemPara<UserControls.Control_Test>(MenuName, MenuName, m);
19                     }
20                     break;
21                 }
22             }
23         }

  初始化菜單,在「主菜單」中有四個子菜單,其中「操做」的子菜單中還有子菜單

 1         private void LoadMenuData()
 2         {
 3             MenuItem mainMenu = new MenuItem("主菜單");
 4             MenuItem projectMenu = new MenuItem("項目");
 5             MenuItem toolMenu = new MenuItem("工具");
 6             MenuItem otherMenu = new MenuItem("其餘");
 7             MenuItem helpMenu = new MenuItem("幫助");
 8 
 9             mainMenu.Childrens.Add(new MenuItem("打開"));
10             mainMenu.Childrens.Add(new MenuItem("新建"));
11 
12             MenuItem operateMenu = new MenuItem("操做");
13 
14 
15             MenuItem saveMenu = new MenuItem("保存");
16             MenuItem deleteMenu = new MenuItem("刪除");
17             MenuItem readMenu = new MenuItem("讀取");
18             operateMenu.Childrens.Add(saveMenu);
19             operateMenu.Childrens.Add(deleteMenu);
20             operateMenu.Childrens.Add(readMenu);
21 
22             mainMenu.Childrens.Add(operateMenu);
23 
24             mainMenu.Childrens.Add(new MenuItem("測試三"));
25 
26             helpMenu.Childrens.Add(new MenuItem("測試一"));
27             helpMenu.Childrens.Add(new MenuItem("測試二"));
28             helpMenu.Childrens.Add(new MenuItem("測試三"));
29 
30             MenuList.Add(mainMenu);
31             MenuList.Add(projectMenu);
32             MenuList.Add(toolMenu);
33             MenuList.Add(otherMenu);
34             MenuList.Add(helpMenu);
35 
36             SetMenuCommand(MenuList);
37         }

  在構造中,執行初始化菜單的方法

1 public MenuControlModel()
2         {
3             LoadMenuData();
4         }

結束

  Tab每項的內容必須爲UserControl,UserControl無需與Model進行banding。測試的UserControl和其Model沒有寫,只是一個簡單的例子~

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