[Qt-qml] Accessing delegate instance based on model element

[Adriano Rezende]

On Tue, Aug 31, 2010 at 2:40 PM, Alex <alexlordax+qt at gmail.com> wrote:
> On Tue, Aug 31, 2010 at 12:42 AM,  <tapani.mikola at nokia.com> wrote:
>> On 08/31/2010 03:44 AM, ext Alex wrote:
>>
>> Hi all,
>>
>> I am instantiating a bunch of components inside a Repeater, based on a
>> ListModel.  In some cases, I need to act (e.g., invoke a javascript
>> function)  directly on the delegate of a particular model element.  Is
>> there a way to access the delegate instance which corresponds to a
>> particular model element?
>>
>> Cheers,
>> Alex
>> you should be able to do:
>>
>> item.children[index-to-the-delegate-you-want-to-access].property-you-want-to-access
>>

Hi,

Instead of accessing the delegate directly, it's better to change it
through Model/View mechanism, using property bindings like below:

Item {
    width: 400
    height: 400

    ListModel {
        id: model
        ListElement { color: "red" }
        ListElement { color: "green" }
        ListElement { color: "blue" }
    }

    Column {
        Repeater {
            model: model
            Rectangle {
                id: item
                width: 50
                height: 50
                color: model.color
            }
        }
    }

    MouseArea {
        anchors.fill: parent
        onClicked: model.setProperty(1, "color", "gray");
    }
}

Does it solve your problem?

Br,
Adriano