C# Selection类代码示例

        public MainMenu(Rectangle windowSize, KeyboardState newKeyboardState, MouseState newMouseState)
        {
            windowWidth = windowSize.Width;
            windowHeight = windowSize.Height;
            keyboardState = newKeyboardState;
            mousestate = newMouseState;
            selection = Selection.Play;
            wallpaper = new Sprite(new Rectangle(0, 0, windowWidth, windowHeight), windowSize);
            wallpaperText = new Sprite(new Rectangle(0, 0, windowWidth, windowHeight), windowSize);
            nuages = new Sprite(new Rectangle(0, 0, windowWidth * 3, windowHeight), windowSize);
            nuages.Direction = new Vector2(-1, 0);
            nuages.Vitesse = 0.1f; // 1f = 1000 px/sec
            mouse = new AnimatedSprite(new Rectangle(-100, -100, 80, 100), windowSize, 8, 4, 40);
            relativeAmplitudeVibrationSelection = (float)amplitudeVibrationSelection / (float)(windowHeight + windowWidth);
            sprites = new List<AnimatedSprite>();

            menuItems = new Dictionary<Selection, Sprite>();
            menuItems.Add(Selection.Play, new Sprite(new Rectangle(112, 423, 124, 55), windowSize, "menu/textPlay"));
            menuItems.Add(Selection.Extra, new Sprite(new Rectangle(191, 480, 124, 55), windowSize, "menu/textExtra"));
            menuItems.Add(Selection.Options, new Sprite(new Rectangle(394, 470, 135, 55), windowSize, "menu/textOptions"));
            menuItems.Add(Selection.Credit, new Sprite(new Rectangle(562, 400, 124, 55), windowSize, "menu/textCredit"));
            menuItems.Add(Selection.Exit, new Sprite(new Rectangle(675, 480, 101, 55), windowSize, "menu/textExit"));

            Fire = new ParticleEngine(new Rectangle(0,windowSize.Height,windowSize.Width,0));
            Fire.SetSpeedRange(0.2f, 2f, 90, 40);
            Fire.SetLifeTimeRange(20, 90);
            Fire.SetScaleRange(0.2f, 1.4f);

            Cursor = new ParticleEngine(new Rectangle());
            Cursor.SetSpeedRange(0.2f, 1.6f, -45, 25);
            Cursor.SetAngularSpeedRange(0, 3);
            Cursor.SetLifeTimeRange(20, 50);
            Cursor.SetScaleRange(0.2f, 1.4f);
            Cursor.SetColorRange(0, 255, 0, 255, 0, 255, 0, 20);
        }

 /// <summary>
 /// Replace the text of the selection with the answer to the calculation
 /// </summary>
 /// <param Name="selection">The current selection, used as input, and modified for the output</param>
 /// <param Name="argument">Anything added after the command Name, used as input</param>
 public void Execute(Selection selection, string[] arguments)
 {
     //Attempt to perform the calculation
     try { selection.Text = PerformCalculation(selection.Text); }
     //If it fails, raise an error to the user
     catch { new Error(String.Format(@"Sum'{0}' is not formatted correctly", selection.Text), Camera); }
 }

        public Calendar()
        {
            InitializeComponent();

            ItemContextMenu = new ContextMenu();
            MenuItem Block = new MenuItem();
            Block.Header = "Block";
            Block.Click += new RoutedEventHandler(MenuBlock_Click);
            ItemContextMenu = new ContextMenu();
            MenuItem UnBlock = new MenuItem();
            UnBlock.Header = "Unblock";
            UnBlock.Click += new RoutedEventHandler(MenuUnBlock_Click);
            MenuItem Delete = new MenuItem();
            Delete.Header = "Delete";
            Delete.Click += new RoutedEventHandler(MenuDelete_Click);
            ItemContextMenu.Items.Add(Block);
            ItemContextMenu.Items.Add(UnBlock);
            ItemContextMenu.Items.Add(Delete);

            oSel = new Selection(this);
            DispatcherTimer dispatcherTimer = new System.Windows.Threading.DispatcherTimer();
            dispatcherTimer.Tick += new EventHandler(dispatcherTimer_Tick);
            dispatcherTimer.Interval = new TimeSpan(0, 0, 1);
            dispatcherTimer.Start();
            oRefresh();
        }

 public YoutubeWidget(string source, 
     Selection selection) 
     : this(source)
 {
     this.mSelection = selection;
     HttpService = new HttpService();
 }

        /// <summary>
        /// Create a new Load/Save Screen.
        /// </summary>
        /// <param name="NextState">Depending whether the game is loading or saving.
        /// If the game is loading, then the it is the state the game will go to if the operation is cancelled.
        /// If the game is saving, this state will be reached regardless.</param>
        /// <param name="SaveMode">True for saving, false for loading.</param>
        public SaveLoadScreen(State.State NextState, bool SaveMode)
        {
            this.NextState = NextState;
            this.SaveMode = SaveMode;

            if (SaveMode)
            {
                LogsSelection = new Selection(50, 130, new string[] {
                    "1: ", "2: ", "3: ", "4: ", "5: ", "6: ", "7: ", "8: ", "Cancel"});
            }
            else
            {
                LogsSelection = new Selection(50, 130, new string[] {
                    "1: ", "2: ", "3: ", "4: ", "5: ", "6: ", "7: ", "8: ", "Autosave", "Cancel"});
            }

            for (int i = 0; i < 8; i++)
            {
                if (Properties.Settings.Default.Logs[i] == "0")
                {
                    LogsSelection.Choices[i] += "-";
                }
                else
                {
                    LogsSelection.Choices[i] += Properties.Settings.Default.Logs[i];
                }
            }
        }

		public Composite UseItem(Selection<bool> reqs = null)
		{
			return new Decorator(ret => reqs == null || reqs(ret),
				new Action(delegate
				{
					if (_timer.IsRunning && _timer.Elapsed.TotalSeconds < CoolDown)
						return RunStatus.Failure;

					if (!_timer.IsRunning)
						_timer.Start();

					foreach (var o in BuddyTor.Me.InventoryEquipment)
					{
						if (o.Name.Contains(ItemName))
						{
							o.Use();
							o.Interact();
							_timer.Stop();
							_timer.Reset();
							_timer.Start();
							return RunStatus.Success;
						}
					}
					return RunStatus.Failure;
				}));
		}

		static Selection TryExtendSelectionToComments(IDocument document, Selection selection, IList<ISpecial> commentsBlankLines)
		{
			var extendedToComments = ExtendSelectionToComments(document, selection, commentsBlankLines);
			if (extendedToComments != null)
				return extendedToComments;
			return selection;
		}

        public virtual Selection PreSelection(SelectionManager sm, Selection sel)
        {
            if ( !sel.IsEmpty && !sel.Start.Node.Equals(node) )
                return new Selection(SelectionManager.CreateSelectionPoint(node, false));

            return sel;
        }

        // Constructor
        #region Constructor


        public ObjectsPropertiesVM()
        {
            Selection = new Selection();
            Selection.PropertyChanged += Selection_SelectionSetChanged;

            //_canSelectFirstNodes = true;
        }

 /// <summary>
 /// Represents the Relationship Class information
 /// </summary>
 /// <param name="featureLayer"></param>
 /// <param name="selection"></param>
 public RelateInfo(FeatureLayer featureLayer, Selection selection)
 {
     _featureLayer = featureLayer;
     _selection = selection;            
     _featureClassName = _featureLayer.GetFeatureClass().GetName();
     
 }

        internal Selection ToSelection()
        {
            Selection s = new Selection();
            if (this.Pane != PaneValues.TopLeft) s.Pane = this.Pane;

            if (this.ActiveCell.Length > 0 && !this.ActiveCell.Equals("A1", StringComparison.OrdinalIgnoreCase))
            {
                s.ActiveCell = this.ActiveCell;
            }

            if (this.ActiveCellId != 0) s.ActiveCellId = this.ActiveCellId;

            if (this.SequenceOfReferences.Count > 0)
            {
                if (this.SequenceOfReferences.Count == 1)
                {
                    // not equal to A1
                    if (this.SequenceOfReferences[0].StartRowIndex != 1
                        || this.SequenceOfReferences[0].StartColumnIndex != 1
                        || this.SequenceOfReferences[0].EndRowIndex != 1
                        || this.SequenceOfReferences[0].EndColumnIndex != 1)
                    {
                        s.SequenceOfReferences = SLTool.TranslateCellPointRangeToSeqRef(this.SequenceOfReferences);
                    }
                }
                else
                {
                    s.SequenceOfReferences = SLTool.TranslateCellPointRangeToSeqRef(this.SequenceOfReferences);
                }
            }

            return s;
        }

		public static Composite Buff(string spell, Selection<bool> reqs = null)
		{
			return
				new Decorator(
					ret => (reqs == null || reqs(ret)) && !Me.HasBuff(spell),
					Cast(spell, ret => Me, ret => true));
		}

        public MainMenu(Rectangle windowSize, KeyboardState newKeyboardState, MouseState newMouseState)
        {
            windowWidth = windowSize.Width;
            windowHeight = windowSize.Height;
            keyboardState = newKeyboardState;
            mousestate = newMouseState;
            selection = Selection.Play;
            wallpaper = new Sprite(new Rectangle(0, 0, windowWidth, windowHeight), windowSize);
            wallpaperText = new Sprite(new Rectangle(0, 0, windowWidth, windowHeight), windowSize);
            nuages = new Sprite(new Rectangle(0, 0, windowWidth * 3, windowHeight), windowSize);
            nuages.Direction = new Vector2(-1, 0);
            nuages.Vitesse = 0.1f; // 1f = 1000 px/sec
            mouse = new ParticleEngine(windowSize, new DecimalRectangle(-200, -200, 0, 0), new Vector3(1, 10, 10),
                                new List<string>() { "particle/star"}, 10, 0.1f, 2f, -45f, 15f, 0f, 180f, -1f, 1f, 10f, 150f);
            mouse.SetColorRange(0, 100, 0, 30, 0, 30);
            relativeAmplitudeVibrationSelection = (float)amplitudeVibrationSelection / (float)(windowHeight + windowWidth);
            sprites = new List<AnimatedSprite>();

            menuItems = new Dictionary<Selection, Sprite>();
            menuItems.Add(Selection.Play, new Sprite(new Rectangle(112, 423, 124, 55), windowSize, "menu/textPlay"));
            menuItems.Add(Selection.Extra, new Sprite(new Rectangle(191, 480, 124, 55), windowSize, "menu/textExtra"));
            menuItems.Add(Selection.Options, new Sprite(new Rectangle(394, 470, 135, 55), windowSize, "menu/textOptions"));
            menuItems.Add(Selection.Credit, new Sprite(new Rectangle(562, 400, 124, 55), windowSize, "menu/textCredit"));
            menuItems.Add(Selection.Exit, new Sprite(new Rectangle(675, 480, 101, 55), windowSize, "menu/textExit"));
        }

		protected override void Init ()
		{
			var listView = new ListView ();

			var selection = new Selection ();
			listView.SetBinding (ListView.ItemsSourceProperty, "Items");

			listView.ItemTemplate = new DataTemplate (() => {
				var cell = new SwitchCell ();
				cell.SetBinding (SwitchCell.TextProperty, "Name");
				cell.SetBinding (SwitchCell.OnProperty, "IsSelected", BindingMode.TwoWay);
				return cell;
			});

			var instructions = new Label {
				FontSize = 16,
				Text =
					"The label at the bottom should equal the number of switches which are in the 'on' position. Flip some of the switches. If the number at the bottom does not equal the number of 'on' switches, the test has failed."
			};

			var label = new Label { FontSize = 24 };
			label.SetBinding (Label.TextProperty, "SelectedCount");

			Content = new StackLayout {
				VerticalOptions = LayoutOptions.Fill,
				Children = {
					instructions,
					listView,
					label
				}
			};

			BindingContext = selection;
		}

 /// <summary>
 /// Replace the current selection'sections text color with  the color specified in the argument
 /// </summary>
 /// <param Name="selection">The selection to modify</param>
 /// <param Name="argument">The argument provided to the command</param>
 public override void Execute(Selection selection, string[] arguments)
 {
     //Detect which color the user wanted
     Color? color = GetColor(arguments);
     //If there was a valid color and a valid selection, apply the color to the selection
     if (color != null && selection != null) { MergeAndApply(selection, color: color); }
 }