public override void Work(DevMarkerChart owner, NotifyCollectionChangedEventArgs e)
{
this.owner = owner;
if (!owner.IsReadyToDrawMarkers())
{
return;
}
int newStartingIndex = e.NewStartingIndex;
if (newStartingIndex == owner.lastIndex)
{
AddNewItems(e);
}
else if (owner.startIndex <= newStartingIndex && newStartingIndex <= owner.lastIndex)
{
foreach (UIElement child in owner.CurrentItemsPanel.Children)
{
var index = GetIndex(child);
if (index >= newStartingIndex)
{
SetIndex(child, index + 1);
}
}
AddNewItems(e);
}
}
public override void Work(DevMarkerChart owner, NotifyCollectionChangedEventArgs e)
{
int oldStartingIndex = e.OldStartingIndex;
int oldEndIndex = oldStartingIndex + e.OldItems.Count;
var children = new UIElement[owner.CurrentItemsPanel.Children.Count];
owner.CurrentItemsPanel.Children.CopyTo(children, 0);
foreach (UIElement item in children)
{
var index = GetIndex(item);
if (oldStartingIndex <= index && index < oldEndIndex)
{
owner.CurrentItemsPanel.Children.Remove(item);
}
}
int oldCount = e.OldItems.Count;
foreach (UIElement item in owner.CurrentItemsPanel.Children)
{
var index = GetIndex(item);
if (index >= oldEndIndex)
{
SetIndex(item, index - oldCount);
}
}
}
private static void OnMarkerBuilderChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
DevMarkerChart owner = (DevMarkerChart)d;
owner.OnMarkerGeneratorChanged((MarkerGenerator)e.OldValue, (MarkerGenerator)e.NewValue);
owner.MarkerBuilderChanged.Raise(owner, e.OldValue, e.NewValue);
}
public override void Work(DevMarkerChart owner, NotifyCollectionChangedEventArgs e)
{
//var markerGenerator = owner.markerGenerator;
//if (markerGenerator != null)
//{
// foreach (FrameworkElement marker in owner.CurrentItemsPanel.Children)
// {
// owner.RemoveCommonBindings(marker);
// markerGenerator.Release(marker);
// }
//}
//owner.CurrentItemsPanel.Children.Clear();
owner.DrawAllMarkers(true);
}
public override void Work(DevMarkerChart owner, NotifyCollectionChangedEventArgs e)
{
//var markerGenerator = owner.markerGenerator;
//if (markerGenerator != null)
//{
// foreach (FrameworkElement marker in owner.CurrentItemsPanel.Children)
// {
// owner.RemoveCommonBindings(marker);
// markerGenerator.Release(marker);
// }
//}
//owner.CurrentItemsPanel.Children.Clear();
owner.DrawAllMarkers(true);
}
public void TestAddAndRemoveItems()
{
ChartPlotter plotter = new ChartPlotter();
plotter.PerformLoad();
DevMarkerChart chart = new DevMarkerChart();
chart.MarkerBuilder = new EllipseMarker();
plotter.Children.Add(chart);
ObservableCollection<Point> source = new ObservableCollection<Point>();
chart.ItemsSource = source;
const int count = 10;
// stage 1
for (int i = 0; i < count; i++)
{
source.Add(new Point());
Assert.AreEqual(source.Count, chart.Items.Count);
}
for (int i = count - 1; i >= 0; i--)
{
source.RemoveAt(i);
Assert.AreEqual(source.Count, chart.Items.Count);
}
// stage 2
for (int i = 0; i < count; i++)
{
source.Add(new Point());
Assert.AreEqual(source.Count, chart.Items.Count);
}
Random rnd = new Random();
for (int i = count - 1; i >= 0; i--)
{
int index = rnd.Next(0, source.Count - 1);
source.RemoveAt(index);
Assert.AreEqual(source.Count, chart.Items.Count);
}
// todo check that all items are visible
}
public override void Work(DevMarkerChart owner, NotifyCollectionChangedEventArgs e)
{
this.owner = owner;
if (!owner.IsReadyToDrawMarkers()) return;
int newStartingIndex = e.NewStartingIndex;
if (newStartingIndex == owner.lastIndex)
{
AddNewItems(e);
}
else if (owner.startIndex <= newStartingIndex && newStartingIndex <= owner.lastIndex)
{
foreach (UIElement child in owner.CurrentItemsPanel.Children)
{
var index = GetIndex(child);
if (index >= newStartingIndex)
{
SetIndex(child, index + 1);
}
}
AddNewItems(e);
}
}
private static void OnMarkerBuilderTemplateChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
DevMarkerChart owner = (DevMarkerChart)d;
// owner.MarkerBuilder = new TemplateMarkerGenerator((DataTemplate)e.NewValue);
}
private static void OnMarkerTemplateChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
DevMarkerChart owner = (DevMarkerChart)d;
owner.OnMarkerTemplateChanged((DataTemplate)e.NewValue, (DataTemplate)e.OldValue);
}
public abstract void Work(DevMarkerChart owner, NotifyCollectionChangedEventArgs e);
public abstract void Work(DevMarkerChart owner, NotifyCollectionChangedEventArgs e);
public override void Work(DevMarkerChart owner, NotifyCollectionChangedEventArgs e)
{
int oldStartingIndex = e.OldStartingIndex;
int oldEndIndex = oldStartingIndex + e.OldItems.Count;
var children = new UIElement[owner.CurrentItemsPanel.Children.Count];
owner.CurrentItemsPanel.Children.CopyTo(children, 0);
foreach (UIElement item in children)
{
var index = GetIndex(item);
if (oldStartingIndex <= index && index < oldEndIndex)
{
owner.CurrentItemsPanel.Children.Remove(item);
}
}
int oldCount = e.OldItems.Count;
foreach (UIElement item in owner.CurrentItemsPanel.Children)
{
var index = GetIndex(item);
if (index >= oldEndIndex)
{
SetIndex(item, index - oldCount);
}
}
}