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path: root/Software/Visual_Studio/MachineStudio/Modules/Tango.MachineStudio.UsersAndRoles/Views/UserView.xaml.cs
blob: b617bdbc496bf943dfb27fc9032b5a50a48d9ded (plain)
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace Tango.MachineStudio.UsersAndRoles.Views
{
    /// <summary>
    /// Interaction logic for UserView.xaml
    /// </summary>
    public partial class UserView : UserControl
    {
        public UserView()
        {
            InitializeComponent();
        }
    }
}
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using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Diagnostics;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Media.TextFormatting;
using Tango.Scripting.Core;
using Tango.Scripting.Editors.Document;
using Tango.Scripting.Editors.Rendering;
using Tango.Scripting.Editors.Utils;

namespace Tango.Scripting.Editors.Editing
{
    public class BreakPointMargin : AbstractMargin, IWeakEventListener
    {
        private TextArea textArea;
        private int maxLineNumberLength = 1;
        private BitmapSource _arrowBitmap;
        private ScriptEditor _editor;

        public ObservableCollection<BreakPoint> BreakPoints { get; set; }

        public Brush Background
        {
            get { return (Brush)GetValue(BackgroundProperty); }
            set { SetValue(BackgroundProperty, value); }
        }
        public static readonly DependencyProperty BackgroundProperty =
            DependencyProperty.Register("Background", typeof(Brush), typeof(BreakPointMargin), new PropertyMetadata(new SolidColorBrush(Color.FromRgb(50, 50, 50))));

        public Brush Foreground
        {
            get { return (Brush)GetValue(ForegroundProperty); }
            set { SetValue(ForegroundProperty, value); }
        }
        public static readonly DependencyProperty ForegroundProperty =
            DependencyProperty.Register("Foreground", typeof(Brush), typeof(BreakPointMargin), new PropertyMetadata(Brushes.Red));

        static BreakPointMargin()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(BreakPointMargin),
                                                     new FrameworkPropertyMetadata(typeof(BreakPointMargin)));
        }

        public BreakPointMargin(ScriptEditor editor)
        {
            _editor = editor;
            BreakPoints = new ObservableCollection<BreakPoint>();
            BreakPoints.CollectionChanged += BreakPoints_CollectionChanged;
            RenderOptions.SetEdgeMode(this, EdgeMode.Unspecified);

            _arrowBitmap = new BitmapImage(new Uri($"pack://application:,,,/Tango.Scripting.Editors;component/Images/break_point_arrow.png", UriKind.Absolute));
        }

        private void BreakPoints_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
        {
            InvalidateVisual();
        }

        protected override Size MeasureOverride(Size availableSize)
        {
            return new Size(20, 0);
        }

        protected override void OnRender(DrawingContext drawingContext)
        {
            TextView textView = this.TextView;
            Size renderSize = this.RenderSize;
            if (textView != null && textView.VisualLinesValid)
            {
                drawingContext.DrawRectangle(Background, new Pen(Background, 1), new Rect(0, 0, ActualWidth, ActualHeight));

                var foreground = Foreground;
                foreach (VisualLine line in textView.VisualLines)
                {
                    int lineNumber = line.FirstDocumentLine.LineNumber;

                    BreakPoint b = BreakPoints.FirstOrDefault(x => x.LineNumber == lineNumber);

                    if (b != null)
                    {
                        double y = line.GetTextLineVisualYPosition(line.TextLines[0], VisualYPosition.TextTop);
                        drawingContext.DrawEllipse(Foreground, new Pen(Brushes.Gainsboro, 1), new Point(10, y - textView.VerticalOffset + 8), 6, 6);

                        if (b.IsActive)
                        {
                            drawingContext.DrawImage(_arrowBitmap, new Rect(6, y - textView.VerticalOffset + 2.5, 8.5, 10));
                        }
                    }
                }
            }
        }

        protected override void OnTextViewChanged(TextView oldTextView, TextView newTextView)
        {
            if (oldTextView != null)
            {
                oldTextView.VisualLinesChanged -= TextViewVisualLinesChanged;
            }
            base.OnTextViewChanged(oldTextView, newTextView);
            if (newTextView != null)
            {
                newTextView.VisualLinesChanged += TextViewVisualLinesChanged;

                // find the text area belonging to the new text view
                textArea = newTextView.Services.GetService(typeof(TextArea)) as TextArea;
            }
            else
            {
                textArea = null;
            }
            InvalidateVisual();
        }

        protected override void OnDocumentChanged(TextDocument oldDocument, TextDocument newDocument)
        {
            if (oldDocument != null)
            {
                PropertyChangedEventManager.RemoveListener(oldDocument, this, "LineCount");
            }
            base.OnDocumentChanged(oldDocument, newDocument);
            if (newDocument != null)
            {
                PropertyChangedEventManager.AddListener(newDocument, this, "LineCount");
            }
            OnDocumentLineCountChanged();
        }

        protected virtual bool ReceiveWeakEvent(Type managerType, object sender, EventArgs e)
        {
            if (managerType == typeof(PropertyChangedEventManager))
            {
                OnDocumentLineCountChanged();
                return true;
            }
            return false;
        }

        bool IWeakEventListener.ReceiveWeakEvent(Type managerType, object sender, EventArgs e)
        {
            return ReceiveWeakEvent(managerType, sender, e);
        }

        private void OnDocumentLineCountChanged()
        {
            int documentLineCount = Document != null ? Document.LineCount : 1;
            int newLength = documentLineCount.ToString(CultureInfo.CurrentCulture).Length;

            foreach (var breakPoint in BreakPoints.ToList())
            {
                if (breakPoint.LineNumber > documentLineCount)
                {
                    BreakPoints.Remove(breakPoint);
                }
                else
                {
                    try
                    {
                        var line = Document.GetLineByNumber(breakPoint.LineNumber);
                        if (line != null)
                        {
                            String lineText = Document.GetText(line.Offset, line.Length);
                            if (!IsBreakPointValid(lineText))
                            {
                                BreakPoints.Remove(breakPoint);
                            }
                        }
                    }
                    catch { }
                }
            }

            // The margin looks too small when there is only one digit, so always reserve space for
            // at least two digits
            if (newLength < 2)
                newLength = 2;

            if (newLength != maxLineNumberLength)
            {
                maxLineNumberLength = newLength;
                InvalidateMeasure();
            }
        }

        private void TextViewVisualLinesChanged(object sender, EventArgs e)
        {
            InvalidateVisual();
        }

        protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParameters)
        {
            // accept clicks even when clicking on the background
            return new PointHitTestResult(this, hitTestParameters.HitPoint);
        }

        private VisualLine GetLineNumberByMousePosition(MouseEventArgs e)
        {
            Point pos = e.GetPosition(TextView);
            pos.X = 0;
            pos.Y += TextView.VerticalOffset;
            VisualLine vl = TextView.GetVisualLineFromVisualTop(pos.Y);
            return vl;
        }

        private bool IsBreakPointValid(String lineText)
        {
            if (lineText.EndsWith(";") && !lineText.StartsWith("using"))
            {
                return true;
            }

            return false;
        }

        protected override void OnPreviewMouseMove(MouseEventArgs e)
        {
            base.OnPreviewMouseMove(e);

            if (_editor.DisableBreakPoints)
            {
                Cursor = Cursors.No;
            }
            else
            {
                Cursor = Cursors.Arrow;
            }
        }

        protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
        {
            base.OnMouseLeftButtonDown(e);

            if (_editor.DisableBreakPoints)
            {
                return;
            }

            try
            {
                if (!e.Handled && TextView != null && textArea != null)
                {
                    e.Handled = true;
                    textArea.Focus();

                    var visualLine = GetLineNumberByMousePosition(e);

                    int? lineNumber = visualLine != null ? (int?)visualLine.FirstDocumentLine.LineNumber : null;

                    if (lineNumber != null)
                    {
                        var breakPoint = BreakPoints.FirstOrDefault(x => x.LineNumber == lineNumber.Value);
                        if (breakPoint != null)
                        {
                            BreakPoints.Remove(breakPoint);
                        }
                        else
                        {
                            var lineText = Document.GetText(visualLine.FirstDocumentLine.Offset, visualLine.FirstDocumentLine.Length).Trim();

                            if (IsBreakPointValid(lineText))
                            {
                                BreakPoint newBreakPoint = new BreakPoint();
                                newBreakPoint.LineNumber = lineNumber.Value;
                                BreakPoints.Add(newBreakPoint);
                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex);
            }
        }
    }
}