Hi,
you can use the function bind (has nothing to do with data binding) to set
the scope of every method. Take a look at
http://demo.qooxdoo.org/current/apiviewer/#qx.lang.Function~bind to see how
you can use it.
Regards,
Martin
Krycek wrote:
>
> Hi Martin,
>
> Thanks for the code.
> But I was hoping to have all the bindings created by
> qx.data.controller.Object.It's a little bit strange to have just that case
> treated different.
> Here what I've done:
>
> var fields = this._fields;
> controller.addTarget(this._fields["type"], "selection", "type",
> true,
> {
> converter : function(data) {
> for (var i=0, len=fields["type"].getChildren().length; i < len;
> i++)
> {
> if (fields["type"].getChildren()[i].getModel() == data)
> return [fields["type"].getChildren()[i]];
> }
> }
> }, {
> converter : function(data) {
> return data[0].getModel();
> }
> });
>
> It works but I have one last question: how to change the converter scope?
> the default for "this" is the options map. I want to change that scope to
> be
> able to remove the first line: var fields = this._fields;
>
> On Fri, Sep 4, 2009 at 4:44 AM, MartinWittemann
> <[email protected]>wrote:
>
>>
>> Hello,
>>
>> there are two reasons why your code can not work. First, there is no
>> event
>> for ModelSelection. So you can not bind that like you did. Second,
>> ModelSelection always wraps its selections in an array.
>> Take a look at the following code to see how you can set up a proper two
>> way
>> binding for a RadioButtonGroup using the ModelSelection:
>>
>> qx.Class.define("Model", {
>> extend : qx.core.Object,
>> properties : {
>> name : {
>> event : "changeName",
>> init : "r0"
>> }
>> }
>> });
>>
>> var rc = new qx.ui.form.RadioButtonGroup();
>> for (var i = 0; i < 10; i++) {
>> var rb = new qx.ui.form.RadioButton("r" + i);
>> rb.setModel("r" + i);
>> rc.add(rb);
>> }
>> this.getRoot().add(rc);
>>
>>
>> var model = new Model();
>>
>> model.bind("name", rc, "modelSelection", {
>> converter : function(data) {
>> return [data];
>> }});
>>
>> rc.bind("selection", model, "name", {
>> converter : function(data) {
>> return data[0].getModel();
>> }});
>>
>> This code works when the property stored in the model is the same than
>> stored in the RadioButtons model. If you have something different, you
>> have
>> to change the coverter for this. But take care, this code only works for
>> RadioButtonGroups and other single selection widget with the selection
>> mode
>> of "one".
>>
>> To your missing else case... right. :D I must have missed that one
>> completely! Just updated the trunk with it. Thanks for the hint!
>>
>> Regards,
>> Martin
>>
>>
>>
>> Krycek wrote:
>> >
>> > Hi,
>> > I'm trying to use the new "model" property in RadioButtons, here is
>> what
>> I
>> > have done so far:
>> >
>> >
>> > --code--
>> >
>> > var types =
>> > {
>> > "r" : "Type 1",
>> > "c" : "Type 2",
>> > "d": "Type 3"
>> > };
>> >
>> > this._fields["type"] = new qx.ui.form.RadioButtonGroup();
>> > this._fields["type"].setLayout(new qx.ui.layout.HBox(5));
>> >
>> > for (var type in types)
>> > {
>> > var radioButton = new qx.ui.form.RadioButton(types[type]);
>> > radioButton.setValue(type == 'r');
>> > radioButton.setModel(type);
>> > radioButton.setUserData("value", type);
>> >
>> > this._fields["type"].add(radioButton);
>> > }
>> >
>> > -- code --
>> >
>> > if I call: this._fields["type"].setModelSelection(['c']), "Type 2" is
>> > selected as expected (very good).
>> >
>> > But later on the code I have some bindings like:
>> >
>> > controller.addTarget(this._fields["relevance"], "value", "relevance",
>> > true);
>> >
>> > How do I set the binding to auto select the right choice depending on
>> the
>> > model.type value?
>> >
>> > Do I need to use converters? I hope I don't need to use converters
>> every
>> > time I'm going to use RadioButtons.
>> >
>> > By the way, new qx.ui.form.RadioButtonGroup(new qx.ui.layout.HBox(5))
>> > doesn't work, is that suppose to be like that? Setting the layout later
>> > works ok, though.
>> >
>> > I guess an "else" is missing here:
>> >
>> > if (layout == null) {
>> > this.setLayout(new qx.ui.layout.VBox(4));
>> > }
>> >
>> >
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>> >
>> >
>>
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