QML Repeater: limit numer of repeated items

[jdonkov]

Given an QML Repeater and an ObjectModel providing data for the repeater. How can I achieve that the repeater shows only the first n elements of the ObjectModel?

The number of elements won't change dynamically.

A possible application would be:

Item {
    id: generic
    property int numElements: 3 // can be set from parent

    ObjectModel {
        id: objects

        Item {
            id: item1
        }
        Item {
            id: item2
        }
        Item {
            id: item3
        }
    }

    Repeater {
        model: objects
        // shall only show numElements elements
    }
}

[Diracsbracket]

@jdonkov
Why not use a view, e.g. ListView and setting the visible property of the elements at index N and higher equal to false?

[GrecKo]

@Diracsbracket That could be done with a Repeater just as well.

[jdonkov]

@Diracsbracket
I thought of this as a feasible solution, too.

Repeater {
    onItemAdded: {
        if ((index + 1) > numElements)
            item.visible = false
    }
}

However, the items would be "still there". Won't the invisible items still get rendered?

[Diracsbracket]

@GrecKo said in QML Repeater: limit numer of repeated items:

That could be done with a Repeater just as well

True, but the Repeater will not collapse the layout if you choose to hide an intermediate index.
Although @jdonkov mentions he/she only wants to show the N first ones, maybe later, he may want to show another partition of N elements.

Or a positioner element needs to be used, like Row or Column?

[Diracsbracket]

@jdonkov said in QML Repeater: limit numer of repeated items:

However, the items would be "still there". Won't the invisible items still get rendered?

Invisible items are not rendered, by definition. If you want to "collapse" their position, in that case, you could set their height to 0 instead?, or use a positioner element like Row or Column.

[jdonkov]

Thank you for your input. As long as Repeater doesn't provide a fitting property I'll set the unneeded items invisible.