protected internal override string GetAddObjectReference(qxDotNet.Core.Object obj)
{
if (ItemOptions.ContainsKey((LayoutItem)obj) && ItemOptions[(LayoutItem)obj] != null)
{
return(GetReference() + ".add(" + obj.GetReference() + "," + base.ItemOptions[(LayoutItem)obj].ToString() + ");\n");
}
else
{
return(GetReference() + ".add(" + obj.GetReference() + ");\n");
}
}
internal string GetExpression(qxDotNet.Core.Object target)
{
var sb = new StringBuilder();
sb.Append(target.GetReference());
sb.Append(".");
sb.Append(MethodName);
sb.Append("(");
var needComma = false;
foreach (var prm in Parameters)
{
if (needComma)
{
sb.Append(",");
}
needComma = true;
sb.Append(prm.GetExpression());
}
sb.Append(");\n");
return(sb.ToString());
}
/// <summary>
/// The function is responsible for binding a source objects property to a target objects property. Both properties have to have the usual qooxdoo getter and setter. The source property also needs to fire change-events on every change of its value. Please keep in mind, that this binding is unidirectional. If you need a binding in both directions, you have to use two of this bindings.
/// It’s also possible to bind some kind of a hierarchy as a source. This means that you can separate the source properties with a dot and bind by that the object referenced to this property chain. Example with an object ‘a’ which has object ‘b’ stored in its ‘child’ property. Object b has a string property named abc:
///
/// qx.data.SingleValueBinding.bind(a, "child.abc", textfield, "value");
///
/// In that case, if the property abc of b changes, the textfield will automatically contain the new value. Also if the child of a changes, the new value (abc of the new child) will be in the textfield.
/// There is also a possibility of binding an array. Therefore the array qx.data.IListData is needed because this array has change events which the native does not. Imagine a qooxdoo object a which has a children property containing an array holding more of its own kind. Every object has a name property as a string.
///
/// var svb = qx.data.SingleValueBinding;
/// // bind the first child's name of 'a' to a textfield
/// svb.bind(a, "children[0].name", textfield, "value");
/// // bind the last child's name of 'a' to a textfield
/// svb.bind(a, "children[last].name", textfield2, "value");
/// // also deeper bindings are possible
/// svb.bind(a, "children[0].children[0].name", textfield3, "value");
///
/// As you can see in this example, the abc property of a’s b will be bound to the textfield. If now the value of b changed or even the a will get a new b, the binding still shows the right value.
/// </summary>
/// <param name="sourcePropertyChain">The property chain which represents the source property.</param>
/// <param name="targetObject">The object which the source should be bind to.</param>
/// <param name="targetProperty">The property chain to the target object.</param>
/// <param name="options">A map containing the options.
/// • converter: A converter function which takes four parameters and should return the converted value.
/// 1. The data to convert
/// 2. The corresponding model object, which is only set in case of the use of an controller.
/// 3. The source object for the binding
/// 4. The target object.
/// If no conversion has been done, the given value should be returned. e.g. a number to boolean converter function(data, model, source, target) {return data > 100;}
/// • onUpdate: A callback function can be given here. This method will be called if the binding was updated successful. There will be three parameter you do get in that method call.
/// 1. The source object
/// 2. The target object
/// 3. The data
/// Here is a sample: onUpdate : function(source, target, data) {...}
/// • onSetFail: A callback function can be given here. This method will be called if the set of the value fails.
/// • ignoreConverter: A string which will be matched using the current property chain. If it matches, the converter will not be called.
/// </param>
/// <returns></returns>
public object Bind(string sourcePropertyChain, qxDotNet.Core.Object targetObject, string targetProperty, Map options = null)
{
var b = new BindingInfo();
b.sourceProperty = sourcePropertyChain;
b.target = targetObject;
b.targetProperty = targetProperty;
b.options = options;
var key = b.getKey();
_bindings[key] = b;
var c = new ClientMethodCall("bind")
.SetKeyParameter(b.sourceProperty)
.SetKeyParameter(b.target)
.SetKeyParameter(b.targetProperty);
if (b.options != null)
{
c.SetParameter(b.options);
}
CallClientMethod(c);
return(b);
}
protected internal override string GetRemoveObjectReference(qxDotNet.Core.Object obj)
{
return(GetReference() + ".remove(" + obj.GetReference() + ");\n");
}
internal void RegisterNonVisual(qxDotNet.Core.Object obj)
{
var wr = new WeakReference(obj);
_nonVisuals.Add(wr);
}