public static Action Bind(this UISwitch toggle, INotifyPropertyChanged source, string propertyName)
{
var property = source.GetProperty(propertyName);
if (property.PropertyType == typeof(bool))
{
toggle.SetValue(source, property);
var handler = new PropertyChangedEventHandler ((s, e) =>
{
if (e.PropertyName == propertyName)
{
toggle.InvokeOnMainThread(()=>
toggle.SetValue(source, property));
}
});
source.PropertyChanged += handler;
var valueChanged = new EventHandler(
(sender, e) => property.GetSetMethod().Invoke (source, new object[]{ toggle.On }));
toggle.ValueChanged += valueChanged;
return new Action(() =>
{
source.PropertyChanged -= handler;
toggle.ValueChanged -= valueChanged;
});
}
else
{
throw new InvalidCastException ("Binding property is not boolean");
}
}
public static PropertyChangedEventHandler Bind(this CompoundButton toggle, INotifyPropertyChanged source, string propertyName)
{
var property = source.GetProperty(propertyName);
if (property.PropertyType == typeof(bool))
{
toggle.SetValue(source, property);
var handler = new PropertyChangedEventHandler((s, e) =>
{
if (e.PropertyName == propertyName)
{
var activity = toggle.Context as Activity;
if (activity != null)
{
activity.RunOnUiThread(() => toggle.SetValue(source, property));
}
}
});
source.PropertyChanged += handler;
toggle.CheckedChange += (sender, e) => property.GetSetMethod().Invoke(source, new object[] { toggle.Checked });
return(handler);
}
else
{
throw new InvalidCastException("Binding property is not boolean");
}
}
public static Action Bind(this UITextField textField, INotifyPropertyChanged source, string propertyName)
{
var property = source.GetProperty(propertyName);
textField.SetText(source, property);
var handler = new PropertyChangedEventHandler((s, e) =>
{
if (e.PropertyName == propertyName)
{
textField.InvokeOnMainThread(()=>
textField.SetText(source, property));
}
});
source.PropertyChanged += handler;
var editHandler = new EventHandler((s, e) =>
{
var sender = s as UITextField;
if (sender != null)
{
property.GetSetMethod().Invoke(source, new[] { sender.Text });
}
});
textField.EditingChanged += editHandler;
// create an action to remove the event handlers
return new Action(() =>
{
textField.EditingChanged -= editHandler;
source.PropertyChanged -= handler;
});
}
/// <summary>
/// Bind two objects implementing INotifyPropertyChanged over given properties
/// </summary>
/// <param name="source">source object</param>
/// <param name="sourcePropertyName">source property name</param>
/// <param name="target">target object</param>
/// <param name="targetPropertyName">target property name</param>
/// <param name="bindmode">binding mode, e.g. BindingMode.TwoWay</param>
public static void BindProperties(INotifyPropertyChanged source, string sourcePropertyName, INotifyPropertyChanged target, string targetPropertyName, BindingMode bindMode = BindingMode.TwoWay)
{
switch (bindMode)
{
case BindingMode.OneTime:
target.SetProperty(targetPropertyName, source.GetProperty(sourcePropertyName)); //just set value once
break;
case BindingMode.OneWay:
source.PropertyChanged += (s, e) => { if (e.PropertyName == sourcePropertyName)
{
target.SetProperty(targetPropertyName, source.GetProperty(sourcePropertyName));
}
}; //bind forward...
BindProperties(source, sourcePropertyName, target, targetPropertyName, BindingMode.OneTime); //...then set value (target may have looped back to us and changed our value, in that case we read that latest value from source and set to target)
break;
case BindingMode.TwoWay:
target.PropertyChanged += (s, e) => { if (e.PropertyName == targetPropertyName)
{
source.SetProperty(sourcePropertyName, target.GetProperty(targetPropertyName));
}
}; //reverse bind
BindProperties(source, sourcePropertyName, target, targetPropertyName, BindingMode.OneWay); //bind forward and then set value
break;
default:
throw new NotSupportedException("Unsupported binding mode");
}
}
public static PropertyChangedEventHandler Bind(this SeekBar seekBar, INotifyPropertyChanged source, string propertyName)
{
var property = source.GetProperty(propertyName);
var r = property.GetCustomAttribute <RangeAttribute> ();
if (r != null)
{
seekBar.Max = (int)r.Maximum;
}
var handler = new PropertyChangedEventHandler((s, e) =>
{
if (e.PropertyName == propertyName)
{
//textField.SetText(source, property);
}
});
source.PropertyChanged += handler;
//textField.AfterTextChanged += (sender, e) => property.GetSetMethod().Invoke(source, new []{textField.Text});
return(handler);
}
public static Action Bind(this UITextField textField, INotifyPropertyChanged source, string propertyName)
{
var property = source.GetProperty(propertyName);
textField.SetText(source, property);
var handler = new PropertyChangedEventHandler((s, e) =>
{
if (e.PropertyName == propertyName)
{
textField.InvokeOnMainThread(() =>
textField.SetText(source, property));
}
});
source.PropertyChanged += handler;
var editHandler = new EventHandler((s, e) =>
{
var sender = s as UITextField;
if (sender != null)
{
property.GetSetMethod().Invoke(source, new[] { sender.Text });
}
});
textField.EditingChanged += editHandler;
// create an action to remove the event handlers
return(new Action(() =>
{
textField.EditingChanged -= editHandler;
source.PropertyChanged -= handler;
}));
}
public static Action Bind(this UISwitch toggle, INotifyPropertyChanged source, string propertyName)
{
var property = source.GetProperty(propertyName);
if (property.PropertyType == typeof(bool))
{
toggle.SetValue(source, property);
var handler = new PropertyChangedEventHandler((s, e) =>
{
if (e.PropertyName == propertyName)
{
toggle.InvokeOnMainThread(() =>
toggle.SetValue(source, property));
}
});
source.PropertyChanged += handler;
var valueChanged = new EventHandler(
(sender, e) => property.GetSetMethod().Invoke(source, new object[] { toggle.On }));
toggle.ValueChanged += valueChanged;
return(new Action(() =>
{
source.PropertyChanged -= handler;
toggle.ValueChanged -= valueChanged;
}));
}
else
{
throw new InvalidCastException("Binding property is not boolean");
}
}
public static PropertyChangedEventHandler Bind(this EditText textField, INotifyPropertyChanged source, string propertyName)
{
var property = source.GetProperty(propertyName);
textField.SetText(source, property);
var handler = new PropertyChangedEventHandler ((s, e) =>
{
if (e.PropertyName == propertyName)
{
var activity = textField.Context as Activity;
if (activity != null)
{
activity.RunOnUiThread(() => textField.SetText(source, property));
}
}
});
source.PropertyChanged += handler;
textField.AfterTextChanged += (sender, e) => property.GetSetMethod().Invoke(source, new []{textField.Text});
return handler;
}
public static PropertyChangedEventHandler Bind(this EditText textField, INotifyPropertyChanged source, string propertyName)
{
var property = source.GetProperty(propertyName);
textField.SetText(source, property);
var handler = new PropertyChangedEventHandler((s, e) =>
{
if (e.PropertyName == propertyName)
{
var activity = textField.Context as Activity;
if (activity != null)
{
activity.RunOnUiThread(() => textField.SetText(source, property));
}
}
});
source.PropertyChanged += handler;
textField.AfterTextChanged += (sender, e) => property.GetSetMethod().Invoke(source, new [] { textField.Text });
return(handler);
}
public static Action Bind(
this UILabel label,
INotifyPropertyChanged source,
string propertyName,
IFormatProvider formatProvider = null)
{
var property = source.GetProperty(propertyName);
var l = new WeakReference <UILabel> (label);
label.SetText(source, property);
var handler = new PropertyChangedEventHandler((s, e) =>
{
UILabel weakRef;
if (e.PropertyName == propertyName && l.TryGetTarget(out weakRef))
{
weakRef.InvokeOnMainThread(() => weakRef.SetText(source, property));
}
});
source.PropertyChanged += handler;
return(new Action(() => source.PropertyChanged -= handler));
}
public static PropertyChangedEventHandler Bind(this SeekBar seekBar, INotifyPropertyChanged source, string propertyName)
{
var property = source.GetProperty(propertyName);
var r = property.GetCustomAttribute<RangeAttribute> ();
if (r != null)
{
seekBar.Max = (int)r.Maximum;
}
var handler = new PropertyChangedEventHandler ((s, e) =>
{
if (e.PropertyName == propertyName)
{
//textField.SetText(source, property);
}
});
source.PropertyChanged += handler;
//textField.AfterTextChanged += (sender, e) => property.GetSetMethod().Invoke(source, new []{textField.Text});
return handler;
}
public static PropertyChangedEventHandler Bind(this CompoundButton toggle, INotifyPropertyChanged source, string propertyName)
{
var property = source.GetProperty(propertyName);
if (property.PropertyType == typeof(bool))
{
toggle.SetValue(source, property);
var handler = new PropertyChangedEventHandler ((s, e) =>
{
if (e.PropertyName == propertyName)
{
var activity = toggle.Context as Activity;
if (activity != null)
{
activity.RunOnUiThread(() => toggle.SetValue(source, property));
}
}
});
source.PropertyChanged += handler;
toggle.CheckedChange += (sender, e) => property.GetSetMethod().Invoke (source, new object[]{ toggle.Checked });
return handler;
}
else
{
throw new InvalidCastException ("Binding property is not boolean");
}
}
private static PropertyInfo GetProperty(INotifyPropertyChanged source, string propertyName)
{
var property = source.GetProperty(propertyName);
if (property.PropertyType == typeof(int) || property.PropertyType == typeof(double) ||
property.PropertyType == typeof(float))
{
return(property);
}
throw new InvalidCastException("Binding property is not valid");
}
public static void BindTitle(this Button button, INotifyPropertyChanged source, string propertyName)
{
var property = source.GetProperty(propertyName);
button.SetTitle (source, property);
source.PropertyChanged += (sender, e) =>
{
if (e.PropertyName == propertyName)
{
var activity = button.Context as Activity;
if (activity != null)
{
activity.RunOnUiThread(() => button.SetTitle(source, property));
}
}
};
}
public static Action BindTitle(this UIButton button,
INotifyPropertyChanged source,
string propertyName,
UIControlState state = UIControlState.Normal)
{
var property = source.GetProperty(propertyName);
button.SetTitle(source, property, state);
var handler = new PropertyChangedEventHandler(
(s, e) =>
{
if (e.PropertyName == propertyName)
{
button.SetTitle(source, property, state);
}
}
);
source.PropertyChanged += handler;
return(new Action(() => source.PropertyChanged -= handler));
}
public static Action BindTitle(this UIButton button,
INotifyPropertyChanged source,
string propertyName,
UIControlState state = UIControlState.Normal)
{
var property = source.GetProperty(propertyName);
button.SetTitle (source, property, state);
var handler = new PropertyChangedEventHandler(
(s, e) =>
{
if (e.PropertyName == propertyName)
{
button.SetTitle (source, property, state);
}
}
);
source.PropertyChanged += handler;
return new Action(() => source.PropertyChanged -= handler);
}
public static Action Bind(
this UILabel label,
INotifyPropertyChanged source,
string propertyName,
IFormatProvider formatProvider = null)
{
var property = source.GetProperty(propertyName);
var l = new WeakReference<UILabel> (label);
label.SetText(source, property);
var handler = new PropertyChangedEventHandler((s, e) =>
{
UILabel weakRef;
if (e.PropertyName == propertyName && l.TryGetTarget(out weakRef))
{
weakRef.InvokeOnMainThread(()=> weakRef.SetText(source, property));
}
});
source.PropertyChanged += handler;
return new Action(() => source.PropertyChanged -= handler);
}
private static PropertyInfo GetProperty(INotifyPropertyChanged source, string propertyName)
{
var property = source.GetProperty(propertyName);
if (property.PropertyType == typeof(int) || property.PropertyType == typeof(double)
|| property.PropertyType == typeof(float))
{
return property;
}
throw new InvalidCastException ("Binding property is not valid");
}
