LunarPresentation/Expressions/Bracket.cs

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using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Xml;
using SHomeWorkshop.LunarPresentation.Interfaces;
using SHomeWorkshop.LunarPresentation.Widegets;

namespace SHomeWorkshop.LunarPresentation.Expressions
{
    public class Bracket : MSExpression, IDirection, ICollapsed
    {
        public Bracket(SubPanel rootPanel, SubPanel parentPanel, Editor editor)
            : base(rootPanel, parentPanel, editor)
        {
            // 基类构造方法会调用“InitializeMSPanels”这个虚方法。
            this.SizeChanged += new SizeChangedEventHandler(Bracket_SizeChanged);

            this.chineseName = "括弧式";

            bPanel.MouseLeftButtonDown +=
                new System.Windows.Input.MouseButtonEventHandler(bPanel_MouseLeftButtonDown);
            bPanel.MouseLeftButtonUp +=
                new System.Windows.Input.MouseButtonEventHandler(bPanel_MouseLeftButtonUp);

            bPanel.MouseRightButtonDown += new System.Windows.Input.MouseButtonEventHandler(bPanel_MouseRightButtonDown);
        }

        void bPanel_MouseRightButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
        {
            if (Editor == null) return;
            Editor.SelectedExpression = this;
            e.Handled = true;
        }

        void bPanel_MouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
        {
            // 接收拖动来的公式。
            Globals.DropExpression(this);
        }

        void bPanel_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
        {
            if (Editor == null) return;
            Editor.SelectedExpression = this;

            //准备拖动公式。
            Globals.dragSourceExpression = this;
            e.Handled = true;
        }

        private BracketPanel bPanel;

        public BracketPanel BPanel
        {
            get { return bPanel; }
        }

        public Orientation Direction
        {