Hi,
I was trying to implement a tag cloud with a ListView but I'm facing some
unexpected problems. My idea was the following:
A ListView would have a model of tags, based on a QStringList. Other list view
would have items (custom model), each item would have associated tags. I want
to concentrate the tags in a single list in the UI. So, when you select an
item, it will display all the tags, and the ones which are present in that item
would get highlighted.
Every time I click a tag, it will toggle that tag for the respective item. The
problem is that for some reason, ListView seems to cache the data model and
thus it doesn’t get redrawn. Because the tags are the exactly the same. What
changed was item tags list.
Is there anyway to bypass the model cache or force the ListView to redraw? I
can’t find any suitable method on ListView documentation.
I’m not finding an obvious solution for this problem and I believe that is a
simple solution for it. Any ideas?
ListView {
id: tagsList
model: tags
delegate: Rectangle {
color: "transparent"
border.color: "white"
border.width: 1
Text {
id: tagLabel
color: "gray"
text: "#"+modelData
Component.onCompleted: {
var tags = itemList.model[itemList.currentIndex].tags;
for (var i=0;i<tags.length;i++)
{
if (tags[i]==modelData)
color = "white"
}
}
}
MouseArea {
anchors.fill: parent
onClicked:
itemList.model[itemList.currentIndex].toggleTag(modelData)
}
}
}
Thanks in advance,
Regards,
Nuno_______________________________________________
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