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authorJason Smith <jason.smith@xamarin.com>2016-03-22 13:02:25 -0700
committerJason Smith <jason.smith@xamarin.com>2016-03-22 16:13:41 -0700
commit17fdde66d94155fc62a034fa6658995bef6fd6e5 (patch)
treeb5e5073a2a7b15cdbe826faa5c763e270a505729 /Xamarin.Forms.Core/DataTemplate.cs
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Initial import
Diffstat (limited to 'Xamarin.Forms.Core/DataTemplate.cs')
-rw-r--r--Xamarin.Forms.Core/DataTemplate.cs80
1 files changed, 80 insertions, 0 deletions
diff --git a/Xamarin.Forms.Core/DataTemplate.cs b/Xamarin.Forms.Core/DataTemplate.cs
new file mode 100644
index 00000000..676718a0
--- /dev/null
+++ b/Xamarin.Forms.Core/DataTemplate.cs
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+using System;
+using System.Collections.Generic;
+
+namespace Xamarin.Forms
+{
+ public class DataTemplate : ElementTemplate
+ {
+ public DataTemplate()
+ {
+ }
+
+ public DataTemplate(Type type) : base(type)
+ {
+ }
+
+ public DataTemplate(Func<object> loadTemplate) : base(loadTemplate)
+ {
+ }
+
+ public IDictionary<BindableProperty, BindingBase> Bindings { get; } = new Dictionary<BindableProperty, BindingBase>();
+
+ public IDictionary<BindableProperty, object> Values { get; } = new Dictionary<BindableProperty, object>();
+
+ public void SetBinding(BindableProperty property, BindingBase binding)
+ {
+ if (property == null)
+ throw new ArgumentNullException("property");
+ if (binding == null)
+ throw new ArgumentNullException("binding");
+
+ Values.Remove(property);
+ Bindings[property] = binding;
+ }
+
+ public void SetValue(BindableProperty property, object value)
+ {
+ if (property == null)
+ throw new ArgumentNullException("property");
+
+ Bindings.Remove(property);
+ Values[property] = value;
+ }
+
+ internal override void SetupContent(object item)
+ {
+ ApplyBindings(item);
+ ApplyValues(item);
+ }
+
+ void ApplyBindings(object item)
+ {
+ if (Bindings == null)
+ return;
+
+ var bindable = item as BindableObject;
+ if (bindable == null)
+ return;
+
+ foreach (KeyValuePair<BindableProperty, BindingBase> kvp in Bindings)
+ {
+ if (Values.ContainsKey(kvp.Key))
+ throw new InvalidOperationException("Binding and Value found for " + kvp.Key.PropertyName);
+
+ bindable.SetBinding(kvp.Key, kvp.Value.Clone());
+ }
+ }
+
+ void ApplyValues(object item)
+ {
+ if (Values == null)
+ return;
+
+ var bindable = item as BindableObject;
+ if (bindable == null)
+ return;
+ foreach (KeyValuePair<BindableProperty, object> kvp in Values)
+ bindable.SetValue(kvp.Key, kvp.Value);
+ }
+ }
+} \ No newline at end of file