public void Add(string name, DotvvmControl control, DotvvmProperty property, Action nullBindingAction)
{
var binding = control.GetValueBinding(property);
if (binding == null)
{
nullBindingAction();
}
else
{
entries.Add(new KnockoutBindingInfo() { Name = name, Expression = control.GetValueBinding(property).GetKnockoutBindingExpression() });
}
}
public static void AddNegation(this KnockoutBindingGroup group, string name, DotvvmControl control, DotvvmProperty property, Func <bool> nullBindingAction)
{
var binding = control.GetValueBinding(property);
if (binding == null)
{
group.Add(name, (!nullBindingAction()).ToString().ToLower());
}
else
{
string expression = control.GetValueBinding(property).GetKnockoutBindingExpression();
group.Add(name, $"!{expression}()");
}
}
public static void AddExtender(this KnockoutBindingGroup group, string name, DotvvmControl control, DotvvmProperty property, string extenderName)
{
var binding = control.GetValueBinding(property);
if (binding == null)
{
throw new NotSupportedException();
//group.Add(name, (!nullBindingAction()).ToString().ToLower());
}
else
{
string expression = control.GetValueBinding(property).GetKnockoutBindingExpression();
group.Add(name, $"{expression}.{extenderName}");
}
}
public static void AddSimpleBinding(this KnockoutBindingGroup group, string name, DotvvmControl control, DotvvmProperty property)
{
var binding = control.GetValueBinding(property);
if (binding == null)
{
string value = JsonConvert.ToString(property.GetValue(control));
group.Add(name, value, false);
}
else
{
string expression = control.GetValueBinding(property).GetKnockoutBindingExpression();
group.Add(name, $"{expression}");
}
}
public void Add(string name, DotvvmControl control, DotvvmProperty property, Action nullBindingAction)
{
var binding = control.GetValueBinding(property);
if (binding == null)
{
nullBindingAction();
}
else
{
entries.Add(new KnockoutBindingInfo()
{
Name = name, Expression = control.GetValueBinding(property).GetKnockoutBindingExpression()
});
}
}
public static void AddKnockoutDataBind(this IHtmlWriter writer, string name, DotvvmControl control, DotvvmProperty property, Action nullBindingAction = null,
string valueUpdate = null, bool renderEvenInServerRenderingMode = false, bool setValueBack = false)
{
var expression = control.GetValueBinding(property);
if (expression != null && (!control.RenderOnServer || renderEvenInServerRenderingMode))
{
writer.AddAttribute("data-bind", name + ": " + expression.GetKnockoutBindingExpression(), true, ", ");
if (valueUpdate != null)
{
writer.AddAttribute("data-bind", "valueUpdate: '" + valueUpdate + "'", true, ", ");
}
}
else
{
if (nullBindingAction != null)
{
nullBindingAction();
}
if (setValueBack && expression != null)
{
control.SetValue(property, expression.Evaluate(control, property));
}
}
}
public static void AddKnockoutDataBind(this IHtmlWriter writer, string name, DotvvmControl control, DotvvmProperty property, Action nullBindingAction = null,
string valueUpdate = null, bool renderEvenInServerRenderingMode = false, bool setValueBack = false)
{
var expression = control.GetValueBinding(property);
if (expression != null && (!control.RenderOnServer || renderEvenInServerRenderingMode))
{
writer.AddAttribute("data-bind", name + ": " + expression.GetKnockoutBindingExpression(), true, ", ");
if (valueUpdate != null)
{
writer.AddAttribute("data-bind", "valueUpdate: '" + valueUpdate + "'", true, ", ");
}
}
else
{
if (nullBindingAction != null) nullBindingAction();
if (setValueBack && expression != null) control.SetValue(property, expression.Evaluate(control, property));
}
}
/// <summary>
/// Processes the control tree.
/// </summary>
private void ProcessControlTreeCore(DotvvmControl control, Action <DotvvmControl> action)
{
// if there is a DataContext binding, locate the correct token
var hasDataContext = false;
var pathValue = control.GetValue(Internal.PathFragmentProperty, false);
if (pathValue != null)
{
CurrentPath.Push(pathValue as string);
RefreshCurrentPathArray();
hasDataContext = true;
}
else
{
var binding = control.GetValueBinding(DotvvmBindableObject.DataContextProperty, false);
if (binding != null)
{
CurrentPath.Push(binding.GetKnockoutBindingExpression());
RefreshCurrentPathArray();
hasDataContext = true;
}
}
action(control);
// go through all children
foreach (var child in control.GetChildren())
{
ProcessControlTreeCore(child, action);
}
if (hasDataContext)
{
CurrentPath.Pop();
RefreshCurrentPathArray();
}
}
public static void WriteKnockoutDataBindComment(this IHtmlWriter writer, string name, DotvvmControl control, DotvvmProperty property)
{
writer.WriteUnencodedText($"<!-- ko { name }: { control.GetValueBinding(property).GetKnockoutBindingExpression() } -->");
}
public static void WriteKnockoutDataBindComment(this IHtmlWriter writer, string name, DotvvmControl control, DotvvmProperty property)
{
writer.WriteUnencodedText($"<!-- ko { name }: { control.GetValueBinding(property).GetKnockoutBindingExpression() } -->");
}
