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using System;
using System.Linq;
using System.Collections;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Shapes;
using Xamarin.PropertyEditing.ViewModels;
namespace Xamarin.PropertyEditing.Windows
{
[TemplatePart (Name = "Border", Type = typeof(UIElement))]
[TemplatePart (Name = "Indicator", Type = typeof(Rectangle))]
internal class PropertyButton
: Control
{
static PropertyButton ()
{
FocusableProperty.OverrideMetadata (typeof (PropertyButton), new FrameworkPropertyMetadata (false));
DefaultStyleKeyProperty.OverrideMetadata (typeof (PropertyButton), new FrameworkPropertyMetadata (typeof (PropertyButton)));
}
public PropertyButton()
{
DataContextChanged += OnDataContextChanged;
}
public static readonly DependencyProperty CanSetCustomExpressionProperty = DependencyProperty.Register (
"CanSetCustomExpression", typeof (bool), typeof (PropertyButton), new PropertyMetadata (default (bool)));
public bool CanSetCustomExpression
{
get { return (bool)GetValue (CanSetCustomExpressionProperty); }
set { SetValue (CanSetCustomExpressionProperty, value); }
}
public static readonly DependencyProperty ValueSourceProperty = DependencyProperty.Register (
"ValueSource", typeof (ValueSource), typeof (PropertyButton), new PropertyMetadata (ValueSource.Default, (o, args) => ((PropertyButton)o).OnValueSourceChanged ((ValueSource)args.NewValue)));
public ValueSource ValueSource
{
get { return (ValueSource)GetValue (ValueSourceProperty); }
set { SetValue (ValueSourceProperty, value); }
}
public static readonly DependencyProperty MenuTemplateProperty = DependencyProperty.Register (
"MenuTemplate", typeof (DataTemplate), typeof (PropertyButton), new PropertyMetadata (default (DataTemplate)));
public DataTemplate MenuTemplate
{
get { return (DataTemplate)GetValue (MenuTemplateProperty); }
set { SetValue (MenuTemplateProperty, value); }
}
public override void OnApplyTemplate ()
{
base.OnApplyTemplate ();
this.indicator = (Rectangle)GetTemplateChild ("Indicator");
if (this.indicator == null)
throw new InvalidOperationException ("PropertyButton template Missing part Indicator");
var border = GetTemplateChild ("Border") as UIElement;
if (border == null)
throw new InvalidOperationException ("PropertyButton template Missing part Border");
border.MouseDown += OnBorderMouseDown;
OnValueSourceChanged (ValueSource);
}
private Rectangle indicator;
private ContextMenu menu;
private PropertyViewModel vm;
private void OnBorderMouseDown (object sender, MouseButtonEventArgs e)
{
if (e.ChangedButton != MouseButton.Left)
return;
if (this.menu == null) {
this.menu = MenuTemplate?.LoadContent () as ContextMenu;
if (this.menu == null)
return;
this.menu.PlacementTarget = this.indicator;
this.menu.DataContext = DataContext;
MenuItem customExpression = this.menu.Items.OfType<MenuItem>().FirstOrDefault (mi => mi.Name == "CustomExpressionItem");
if (customExpression != null)
customExpression.Click += OnCustomExpression;
}
this.menu.IsOpen = true;
e.Handled = true;
}
private void OnDataContextChanged (object sender, DependencyPropertyChangedEventArgs e)
{
if (e.OldValue is PropertyViewModel pvm) {
pvm.ResourceRequested -= OnResourceRequested;
pvm.CreateBindingRequested -= OnCreateBindingRequested;
pvm.CreateResourceRequested -= OnCreateResourceRequested;
}
this.vm = e.NewValue as PropertyViewModel;
if (this.vm != null) {
this.vm.ResourceRequested += OnResourceRequested;
this.vm.CreateBindingRequested += OnCreateBindingRequested;
this.vm.CreateResourceRequested += OnCreateResourceRequested;
}
}
private void OnValueSourceChanged (ValueSource source)
{
if (this.indicator == null)
return;
switch (source) {
case ValueSource.Local:
ToolTip = Properties.Resources.Local;
break;
case ValueSource.Binding:
ToolTip = Properties.Resources.Binding;
break;
case ValueSource.Inherited:
ToolTip = Properties.Resources.Inherited;
break;
case ValueSource.DefaultStyle:
case ValueSource.Style:
ToolTip = null;
break;
case ValueSource.Resource:
// VS actually says "static" for system resources, but I think that's worth breaking with
ToolTip = (this.vm?.Resource?.Name != null) ? String.Format (Properties.Resources.ResourceWithName, this.vm.Resource.Name) : Properties.Resources.Resource;
break;
case ValueSource.Default:
ToolTip = Properties.Resources.Default;
return;
case ValueSource.Unset:
ToolTip = Properties.Resources.Unset;
return;
}
}
private void OnCreateBindingRequested (object sender, CreateBindingRequestedEventArgs e)
{
var panel = this.FindPropertiesHost ();
var pvm = (PropertyViewModel) DataContext;
e.BindingObject = CreateBindingWindow.CreateBinding (panel, pvm.TargetPlatform, pvm.Editors.Single(), pvm.Property);
}
private void OnResourceRequested (object sender, ResourceRequestedEventArgs e)
{
var panel = this.FindPropertiesHost();
var pvm = (PropertyViewModel) DataContext;
e.Resource = ResourceSelectorWindow.RequestResource (panel, pvm.TargetPlatform.ResourceProvider, pvm.Editors.Select (ed => ed.Target), pvm.Property, e.Resource);
}
private void OnCreateResourceRequested (object sender, CreateResourceRequestedEventArgs e)
{
var panel = this.FindPropertiesHost();
var pvm = (PropertyViewModel) DataContext;
var result = CreateResourceWindow.CreateResource (panel, pvm.TargetPlatform.ResourceProvider, pvm.Editors.Select (oe => oe.Target), pvm.Property);
e.Source = result.Item1;
e.Name = result.Item2;
}
private void OnCustomExpression (object sender, RoutedEventArgs e)
{
var popup = new EntryPopup {
Placement = PlacementMode.Bottom,
PlacementTarget = this.indicator,
DataContext = DataContext,
StaysOpen = false
};
popup.SetResourceReference (Popup.StyleProperty, "CustomExpressionPopup");
popup.IsOpen = true;
}
}
}
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