public MVVMBinding(
MVVMBindingMode mode = MVVMBindingMode.Default,
MVVMUpdateSourceTrigger updateSourceTrigger = MVVMUpdateSourceTrigger.Default,
string path = null,
object value = null,
MVVMRelativeSource relativeSource = null,
string elementName = null,
MVVMControlBase element = null,
bool validatesOnExceptions = false
)
{
if (element != null)
{
Type = MVVMBindingType.Element;
}
else if (elementName != null)
{
Type = MVVMBindingType.ElementName;
}
else if (relativeSource != null)
{
Type = MVVMBindingType.RelativeSource;
}
else if (value != null)
{
Type = MVVMBindingType.Value;
}
else
{
Type = MVVMBindingType.Path;
}
_Mode = mode;
_UpdateSourceTrigger = updateSourceTrigger;
Path = path;
TargetValue = value;
ElementName = elementName;
Element = element;
ValidatesOnExceptions = validatesOnExceptions;
}
public MVVMBinding(MVVMControlBase element, string path, MVVMBindingMode mode, MVVMUpdateSourceTrigger updateSourceTrigger) : this(element, path, mode)
{
_UpdateSourceTrigger = updateSourceTrigger;
}
internal void Bind(bool isForce = false)
{
MVVMAPI.Log("Bind {0}", this);
if (!IsFirstBind && !isForce)
{
switch (Type)
{
case MVVMBindingType.Value:
case MVVMBindingType.Element:
case MVVMBindingType.ElementName:
case MVVMBindingType.RelativeSource:
MVVMAPI.Log("Denied Bind");
return;
}
}
MVVMAPI.Log("Allow Bind");
Unbind();
IsFirstBind = false;
switch (Type)
{
case MVVMBindingType.Value:
break;
case MVVMBindingType.Path: {
object dataContext = null;
if (IsDataContext)
{
if (Control.Parent != null)
{
dataContext = Control.Parent.DataContext.GetTargetValue();
}
}
else
{
dataContext = Control.DataContext.GetTargetValue();
}
BindSource(dataContext);
break;
}
case MVVMBindingType.Element:
BindSource(Element);
break;
case MVVMBindingType.ElementName: {
MVVMControlBase control;
Control.Root.NamedControls.TryGetValue(ElementName, out control);
BindSource(control);
break;
}
case MVVMBindingType.RelativeSource: {
MVVMControlBase control = Control;
switch (RelativeSource.Mode)
{
case MVVMRelativeSourceMode.Self:
break;
case MVVMRelativeSourceMode.FindAncestor:
int ancestorCount = 0;
while (control != null)
{
if (RelativeSource.AncestorType == null || RelativeSource.AncestorType.IsInstanceOfType(control))
{
ancestorCount++;
if (ancestorCount == RelativeSource.AncestorLevel)
{
break;
}
}
control = control.Parent;
}
break;
default:
throw new NotImplementedException(RelativeSource.Mode.ToString());
}
BindSource(control);
break;
}
default:
throw new NotImplementedException(Type.ToString());
}
BlockOnChanged++;
OneWaySetTargetValue();
BlockOnChanged--;
}
public MVVMBinding(MVVMControlBase element, string path, MVVMBindingMode mode) : this(element, path)
{
_Mode = mode;
}
public MVVMBinding(MVVMControlBase element, string path) : this(element) {
Path = path;
}
public MVVMBinding(MVVMControlBase element, MVVMUpdateSourceTrigger updateSourceTrigger) : this(element) {
_UpdateSourceTrigger = updateSourceTrigger;
}
public MVVMBinding(MVVMControlBase element, MVVMBindingMode mode) : this(element) {
_Mode = mode;
}
public MVVMBinding(MVVMControlBase element)
{
Element = element;
Type = MVVMBindingType.Element;
}
