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342
Charts/Legend items/NewLegend.cs
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342
Charts/Legend items/NewLegend.cs
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Windows.Controls;
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using System.Windows;
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using System.Windows.Data;
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using System.Windows.Shapes;
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using System.Windows.Media.Effects;
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using System.Collections.Specialized;
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using System.Collections.ObjectModel;
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using System.Diagnostics;
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using System.Collections;
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using System.Windows.Media;
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using Microsoft.Research.DynamicDataDisplay.Charts.Legend_items;
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namespace Microsoft.Research.DynamicDataDisplay.Charts
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{
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public delegate IEnumerable<FrameworkElement> LegendItemsBuilder(IPlotterElement element);
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public class NewLegend : ItemsControl, IPlotterElement
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{
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static NewLegend()
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{
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Type thisType = typeof(NewLegend);
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DefaultStyleKeyProperty.OverrideMetadata(thisType, new FrameworkPropertyMetadata(thisType));
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Plotter.PlotterProperty.OverrideMetadata(thisType, new FrameworkPropertyMetadata(OnPlotterChanged));
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}
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private readonly ObservableCollection<FrameworkElement> legendItems = new ObservableCollection<FrameworkElement>();
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public NewLegend()
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{
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ItemsSource = legendItems;
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}
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#region IPlotterElement Members
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private static void OnPlotterChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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NewLegend legend = (NewLegend)d;
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if (e.OldValue != null)
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{
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legend.DetachFromPlotter((Plotter)e.OldValue);
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}
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if (e.NewValue != null)
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{
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legend.AttachToPlotter((Plotter)e.NewValue);
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}
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}
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private Plotter plotter;
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public void OnPlotterAttached(Plotter plotter)
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{
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plotter.CentralGrid.Children.Add(this);
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AttachToPlotter(plotter);
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}
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private void AttachToPlotter(Plotter plotter)
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{
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if (plotter != this.plotter)
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{
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this.plotter = plotter;
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plotter.Children.CollectionChanged += PlotterChildren_CollectionChanged;
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PopulateLegend();
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}
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}
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public void OnPlotterDetaching(Plotter plotter)
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{
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plotter.CentralGrid.Children.Remove(this);
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DetachFromPlotter(plotter);
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}
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private void DetachFromPlotter(Plotter plotter)
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{
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if (plotter != null)
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{
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plotter.Children.CollectionChanged -= PlotterChildren_CollectionChanged;
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this.plotter = null;
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CleanLegend();
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}
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}
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public Plotter Plotter
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{
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get { return plotter; }
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}
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#endregion
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private void PlotterChildren_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
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{
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PopulateLegend();
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}
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public void PopulateLegend()
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{
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legendItems.Clear();
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// smk if (!LegendVisible) return;
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foreach (var chart in plotter.Children.OfType<DependencyObject>())
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{
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var legendItemsBuilder = NewLegend.GetLegendItemsBuilder(chart);
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if (legendItemsBuilder != null)
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{
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foreach (var legendItem in legendItemsBuilder((IPlotterElement)chart))
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{
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legendItems.Add(legendItem);
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}
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}
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//var controller = LegendItemControllersStore.Current.GetController(chart.GetType());
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//if (controller != null)
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//{
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// controller.ProcessChart(chart, this);
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//}
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}
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// smk UpdateVisibility();
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}
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private void UpdateVisibility()
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{
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if (legendItems.Count > 0)
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Visibility = Visibility.Visible;
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else
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Visibility = Visibility.Hidden;
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}
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private void CleanLegend()
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{
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foreach (var legendItem in legendItems)
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{
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BindingOperations.ClearAllBindings(legendItem);
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}
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legendItems.Clear();
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UpdateVisibility();
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}
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#region Attached Properties
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#region Description
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public static object GetDescription(DependencyObject obj)
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{
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return obj.GetValue(DescriptionProperty);
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}
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public static void SetDescription(DependencyObject obj, object value)
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{
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obj.SetValue(DescriptionProperty, value);
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}
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public static readonly DependencyProperty DescriptionProperty = DependencyProperty.RegisterAttached(
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"Description",
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typeof(object),
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typeof(NewLegend),
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new FrameworkPropertyMetadata(null));
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#endregion // end of Description
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#region Detailed description
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public static object GetDetailedDescription(DependencyObject obj)
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{
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return (object)obj.GetValue(DetailedDescriptionProperty);
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}
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public static void SetDetailedDescription(DependencyObject obj, object value)
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{
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obj.SetValue(DetailedDescriptionProperty, value);
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}
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public static readonly DependencyProperty DetailedDescriptionProperty = DependencyProperty.RegisterAttached(
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"DetailedDescription",
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typeof(object),
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typeof(NewLegend),
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new FrameworkPropertyMetadata(null));
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#endregion // end of Detailed description
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#region VisualContent
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public static object GetVisualContent(DependencyObject obj)
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{
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return (object)obj.GetValue(VisualContentProperty);
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}
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public static void SetVisualContent(DependencyObject obj, object value)
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{
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obj.SetValue(VisualContentProperty, value);
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}
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public static readonly DependencyProperty VisualContentProperty = DependencyProperty.RegisterAttached(
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"VisualContent",
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typeof(object),
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typeof(NewLegend),
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new FrameworkPropertyMetadata(null));
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#endregion // end of VisualContent
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#region SampleData
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public static object GetSampleData(DependencyObject obj)
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{
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return (object)obj.GetValue(SampleDataProperty);
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}
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public static void SetSampleData(DependencyObject obj, object value)
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{
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obj.SetValue(SampleDataProperty, value);
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}
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public static readonly DependencyProperty SampleDataProperty = DependencyProperty.RegisterAttached(
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"SampleData",
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typeof(object),
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typeof(NewLegend),
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new FrameworkPropertyMetadata(null));
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#endregion // end of SampleData
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#region ShowInLegend
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public static bool GetShowInLegend(DependencyObject obj)
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{
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return (bool)obj.GetValue(ShowInLegendProperty);
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}
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public static void SetShowInLegend(DependencyObject obj, bool value)
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{
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obj.SetValue(ShowInLegendProperty, value);
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}
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public static readonly DependencyProperty ShowInLegendProperty = DependencyProperty.RegisterAttached(
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"ShowInLegend",
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typeof(bool),
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typeof(NewLegend),
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new FrameworkPropertyMetadata(true, OnShowInLegendChanged));
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private static void OnShowInLegendChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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NewLegend legend = (NewLegend)d;
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legend.PopulateLegend();
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}
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#endregion // end of ShowInLegend
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#region LegendItemsBuilder
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public static LegendItemsBuilder GetLegendItemsBuilder(DependencyObject obj)
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{
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return (LegendItemsBuilder)obj.GetValue(LegendItemsBuilderProperty);
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}
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public static void SetLegendItemsBuilder(DependencyObject obj, LegendItemsBuilder value)
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{
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obj.SetValue(LegendItemsBuilderProperty, value);
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}
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public static readonly DependencyProperty LegendItemsBuilderProperty = DependencyProperty.RegisterAttached(
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"LegendItemsBuilder",
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typeof(LegendItemsBuilder),
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typeof(NewLegend),
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new FrameworkPropertyMetadata(null, OnLegendItemsBuilderChanged));
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private static void OnLegendItemsBuilderChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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IPlotterElement plotterElement = d as IPlotterElement;
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if (plotterElement != null && plotterElement.Plotter != null)
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{
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ChartPlotter plotter = plotterElement.Plotter as ChartPlotter;
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if (plotter != null)
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{
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plotter.NewLegend.PopulateLegend();
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}
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}
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}
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#endregion // end of LegendItemsBuilder
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#endregion // end of Attached Properties
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#region Properties
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public bool LegendVisible
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{
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get { return (bool)GetValue(LegendVisibleProperty); }
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set { SetValue(LegendVisibleProperty, value); }
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}
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public static readonly DependencyProperty LegendVisibleProperty = DependencyProperty.Register(
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"LegendVisible",
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typeof(bool),
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typeof(NewLegend),
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new FrameworkPropertyMetadata(true, OnLegendVisibleChanged));
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private static void OnLegendVisibleChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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NewLegend owner = (NewLegend)d;
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var visible = (bool)e.NewValue;
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owner.OnLegendVisibleChanged(visible);
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}
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private void OnLegendVisibleChanged(bool visible)
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{
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if (visible && legendItems.Count > 0)
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{
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Visibility = Visibility.Visible;
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}
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else
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{
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Visibility = Visibility.Collapsed;
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}
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}
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#endregion // end of Properties
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#region Overrides
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public override void OnApplyTemplate()
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{
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base.OnApplyTemplate();
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#if !RELEASEXBAP
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var rect = (Rectangle)Template.FindName("backRect", this);
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if (rect != null)
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{
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rect.Effect = new DropShadowEffect { Direction = 300, ShadowDepth = 3, Opacity = 0.4 };
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}
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#endif
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}
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#endregion // end of Overrides
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}
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}
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