58 lines
1.4 KiB
QML
58 lines
1.4 KiB
QML
import QtQuick 2.7
|
|
|
|
ListModel {
|
|
// To initialize a HListModel with items,
|
|
// use `Component.onCompleted: extend([{"foo": 1, "bar": 2}, ...])`
|
|
|
|
id: listModel
|
|
|
|
function extend(new_items) {
|
|
for (var i = 0; i < new_items.length; i++) {
|
|
listModel.append(new_items[i])
|
|
}
|
|
}
|
|
|
|
function getIndices(where_role, is, max) { // max: undefined or int
|
|
var results = []
|
|
|
|
for (var i = 0; i < listModel.count; i++) {
|
|
if (listModel.get(i)[where_role] == is) {
|
|
results.push(i)
|
|
|
|
if (max && results.length >= max) {
|
|
break
|
|
}
|
|
}
|
|
}
|
|
return results
|
|
}
|
|
|
|
function getWhere(where_role, is, max) {
|
|
var indices = getIndices(where_role, is, max)
|
|
var results = []
|
|
|
|
for (var i = 0; i < indices.length; i++) {
|
|
results.push(listModel.get(indices[i]))
|
|
}
|
|
return results
|
|
}
|
|
|
|
function upsert(where_role, is, new_item) {
|
|
// new_item can contain only the keys we're interested in updating
|
|
|
|
var indices = getIndices(where_role, is, 1)
|
|
|
|
if (indices.length == 0) {
|
|
listModel.append(new_item)
|
|
} else {
|
|
listModel.set(indices[0], new_item)
|
|
}
|
|
}
|
|
|
|
function pop(index) {
|
|
var item = listModel.get(index)
|
|
listModel.remove(index)
|
|
return item
|
|
}
|
|
}
|