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path: root/Software/Visual_Studio/MachineStudio/Modules/Tango.MachineStudio.DB/Managers/RegisteredView.cs
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using MaterialDesignThemes.Wpf;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using Tango.Core.Commands;
using Tango.MachineStudio.Common.Controls;

namespace Tango.MachineStudio.DB.Managers
{
    /// <summary>
    /// Represents a registered MDI child (data table) view
    /// </summary>
    /// <seealso cref="Tango.MachineStudio.Common.Controls.MdiChild" />
    public class RegisteredView : MdiChild
    {
        private static Random rnd = new Random();

        /// <summary>
        /// Adds the view to the display.
        /// </summary>
        public RelayCommand AddCommand { get; set; }

        /// <summary>
        /// Initializes a new instance of the <see cref="RegisteredView"/> class.
        /// </summary>
        /// <param name="header">The header.</param>
        /// <param name="view">The view.</param>
        /// <param name="action">The action.</param>
        public RegisteredView(String header, FrameworkElement view, Action action)
        {
            Location = new Point(rnd.Next(30, 200), rnd.Next(30, 200));
            Icon = PackIconKind.Table;

            if (header.Length < 5)
            {
                header = header.ToUpper();
            }

            Header = header;

            View = view;

            View.MaxWidth = 1500;
            View.MaxHeight = 800;

            if (action != null)
            {
                AddCommand = new RelayCommand(action);
            }
            else
            {
                AddCommand = new RelayCommand(() =>
                {
                    if (!ViewsManager.DisplayedViews.Contains(this))
                    {
                        ViewsManager.DisplayedViews.Add(this);
                        View.BringIntoView();
                        View.Focus();
                    }
                    else
                    {
                        View.BringIntoView();
                        View.Focus();
                    }
                });
            }
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="RegisteredView"/> class.
        /// </summary>
        /// <param name="header">The header.</param>
        /// <param name="view">The view.</param>
        public RegisteredView(String header, FrameworkElement view) : this(header, view, null)
        {
            if (header.Length < 5)
            {
                header = header.ToUpper();
            }

            view.MaxWidth = 1500;
            view.MaxHeight = 800;

            Header = header;
            View = view;
        }

        /// <summary>
        /// Returns a <see cref="System.String" /> that represents this instance.
        /// </summary>
        /// <returns>
        /// A <see cref="System.String" /> that represents this instance.
        /// </returns>
        public override string ToString()
        {
            return Header;
        }
    }
}
rt = context.Document.CreateAnchor(startOffset); start.MovementType = AnchorMovementType.BeforeInsertion; end = context.Document.CreateAnchor(endOffset); end.MovementType = AnchorMovementType.AfterInsertion; start.Deleted += AnchorDeleted; end.Deleted += AnchorDeleted; // Be careful with references from the document to the editing/snippet layer - use weak events // to prevent memory leaks when the text area control gets dropped from the UI while the snippet is active. // The InsertionContext will keep us alive as long as the snippet is in interactive mode. TextDocumentWeakEventManager.TextChanged.AddListener(context.Document, this); background = new Renderer { Layer = KnownLayer.Background, element = this }; foreground = new Renderer { Layer = KnownLayer.Text, element = this }; context.TextArea.TextView.BackgroundRenderers.Add(background); context.TextArea.TextView.BackgroundRenderers.Add(foreground); context.TextArea.Caret.PositionChanged += Caret_PositionChanged; Caret_PositionChanged(null, null); this.Text = GetText(); } public void Deactivate(SnippetEventArgs e) { TextDocumentWeakEventManager.TextChanged.RemoveListener(context.Document, this); context.TextArea.TextView.BackgroundRenderers.Remove(background); context.TextArea.TextView.BackgroundRenderers.Remove(foreground); context.TextArea.Caret.PositionChanged -= Caret_PositionChanged; } bool isCaretInside; void Caret_PositionChanged(object sender, EventArgs e) { ISegment s = this.Segment; if (s != null) { bool newIsCaretInside = s.Contains(context.TextArea.Caret.Offset); if (newIsCaretInside != isCaretInside) { isCaretInside = newIsCaretInside; context.TextArea.TextView.InvalidateLayer(foreground.Layer); } } } Renderer background, foreground; public string Text { get; private set; } string GetText() { if (start.IsDeleted || end.IsDeleted) return string.Empty; else return context.Document.GetText(start.Offset, Math.Max(0, end.Offset - start.Offset)); } public event EventHandler TextChanged; bool IWeakEventListener.ReceiveWeakEvent(Type managerType, object sender, EventArgs e) { if (managerType == typeof(TextDocumentWeakEventManager.TextChanged)) { string newText = GetText(); if (this.Text != newText) { this.Text = newText; if (TextChanged != null) TextChanged(this, e); } return true; } return false; } public bool IsEditable { get { return true; } } public ISegment Segment { get { if (start.IsDeleted || end.IsDeleted) return null; else return new SimpleSegment(start.Offset, Math.Max(0, end.Offset - start.Offset)); } } sealed class Renderer : IBackgroundRenderer { static readonly Brush backgroundBrush = CreateBackgroundBrush(); static readonly Pen activeBorderPen = CreateBorderPen(); static Brush CreateBackgroundBrush() { SolidColorBrush b = new SolidColorBrush(Colors.LimeGreen); b.Opacity = 0.4; b.Freeze(); return b; } static Pen CreateBorderPen() { Pen p = new Pen(Brushes.Black, 1); p.DashStyle = DashStyles.Dot; p.Freeze(); return p; } internal ReplaceableActiveElement element; public KnownLayer Layer { get; set; } public void Draw(TextView textView, System.Windows.Media.DrawingContext drawingContext) { ISegment s = element.Segment; if (s != null) { BackgroundGeometryBuilder geoBuilder = new BackgroundGeometryBuilder(); geoBuilder.AlignToMiddleOfPixels = true; if (Layer == KnownLayer.Background) { geoBuilder.AddSegment(textView, s); drawingContext.DrawGeometry(backgroundBrush, null, geoBuilder.CreateGeometry()); } else { // draw foreground only if active if (element.isCaretInside) { geoBuilder.AddSegment(textView, s); foreach (BoundActiveElement boundElement in element.context.ActiveElements.OfType<BoundActiveElement>()) { if (boundElement.targetElement == element) { geoBuilder.AddSegment(textView, boundElement.Segment); geoBuilder.CloseFigure(); } } drawingContext.DrawGeometry(null, activeBorderPen, geoBuilder.CreateGeometry()); } } } } } } }