source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/InjectedPlotterBase.cs @ 12588

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Controls;
using System.Windows;

namespace Microsoft.Research.DynamicDataDisplay
{
  public abstract class InjectedPlotterBase : ChartPlotter, IPlotterElement
  {
    /// <summary>
    /// Initializes a new instance of the <see cref="InjectedPlotterBase"/> class.
    /// </summary>
    public InjectedPlotterBase()
      : base(PlotterLoadMode.Empty)
    {
      ViewportPanel = new Canvas();

      Viewport = new InjectedViewport2D(ViewportPanel, this) { CoerceVisibleFunc = CoerceVisible };
    }

    protected abstract DataRect CoerceVisible(DataRect newVisible, DataRect baseVisible);

    protected void CoerceVisible()
    {
      Viewport.CoerceValue(Viewport2D.VisibleProperty);
    }

    private void OuterViewport_PropertyChanged(object sender, ExtendedPropertyChangedEventArgs e)
    {
      OuterViewport_PropertyChanged(e);
    }

    protected virtual void OuterViewport_PropertyChanged(ExtendedPropertyChangedEventArgs e)
    {
      CoerceVisible();
    }

    protected override void OnChildAdded(IPlotterElement child)
    {
      base.OnChildAdded(child);

      if (plotter != null && !plotter.Children.Contains(child))
      {
        plotter.PerformChildChecks = false;
        plotter.Children.Add(child);
        plotter.PerformChildChecks = true;
      }
    }

    protected override void OnChildRemoving(IPlotterElement child)
    {
      base.OnChildRemoving(child);

      if (plotter != null && plotter.Children.Contains(child))
      {
        plotter.PerformChildChecks = false;
        plotter.Children.Remove(child);
        plotter.PerformChildChecks = true;
      }
    }

    #region Properties

    #region ConjunctionMode property

    /// <summary>
    /// Gets or sets the conjunction mode - the way of how inner plotter calculates its Visible rect in dependence of outer plotter's Visible.
    /// This is a DependencyProperty.
    /// </summary>
    /// <value>The conjunction mode.</value>
    public ViewportConjunctionMode ConjunctionMode
    {
      get { return (ViewportConjunctionMode)GetValue(ConjunctionModeProperty); }
      set { SetValue(ConjunctionModeProperty, value); }
    }

    public static readonly DependencyProperty ConjunctionModeProperty = DependencyProperty.Register(
      "ConjunctionMode",
      typeof(ViewportConjunctionMode),
      typeof(InjectedPlotterBase),
      new FrameworkPropertyMetadata(ViewportConjunctionMode.XY, OnConjunctionModeReplaced));

    private static void OnConjunctionModeReplaced(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
      InjectedPlotterBase owner = (InjectedPlotterBase)d;
      owner.OnConjunctionModeChanged();
    }

    protected abstract void OnConjunctionModeChanged();

    #endregion
    #endregion

    #region IPlotterElement methods

    public virtual void OnPlotterAttached(Plotter plotter)
    {
      this.plotter = (Plotter2D)plotter;
      this.plotter.Viewport.PropertyChanged += OuterViewport_PropertyChanged;

      plotter.CentralGrid.Children.Add(ViewportPanel);

      HeaderPanel = plotter.HeaderPanel;
      FooterPanel = plotter.FooterPanel;

      LeftPanel = plotter.LeftPanel;
      BottomPanel = plotter.BottomPanel;
      RightPanel = plotter.RightPanel;
      TopPanel = plotter.BottomPanel;

      MainCanvas = plotter.MainCanvas;
      CentralGrid = plotter.CentralGrid;
      MainGrid = plotter.MainGrid;
      ParallelCanvas = plotter.ParallelCanvas;

      OnLoaded();
      ExecuteWaitingChildrenAdditions();
      AddAllChildrenToParentPlotter();
      CoerceVisible();
    }

    private void AddAllChildrenToParentPlotter()
    {
      plotter.PerformChildChecks = false;
      foreach (var child in Children)
      {
        if (plotter.Children.Contains(child))
          continue;

        plotter.Children.Add(child);
      }
      plotter.PerformChildChecks = true;
    }

    protected override bool IsLoadedInternal
    {
      get
      {
        return plotter != null;
      }
    }

    public virtual void OnPlotterDetaching(Plotter plotter)
    {
      plotter.CentralGrid.Children.Remove(ViewportPanel);
      this.plotter.Viewport.PropertyChanged -= OuterViewport_PropertyChanged;
      RemoveAllChildrenFromParentPlotter();

      this.plotter = null;
    }

    private void RemoveAllChildrenFromParentPlotter()
    {
      plotter.PerformChildChecks = false;
      foreach (var child in Children)
      {
        plotter.Children.Remove(child);
      }
      plotter.PerformChildChecks = true;
    }

    private Plotter2D plotter;
    public Plotter2D Plotter
    {
      get { return plotter; }
    }

    Plotter IPlotterElement.Plotter
    {
      get { return plotter; }
    }

    #endregion

  }

}