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import Qt 4.7
ListView {
id: list
property bool selectable: true
interactive: false
highlightFollowsCurrentItem: false
boundsBehavior: Flickable.StopAtBounds
property real currentItemTop: currentItem !== null ? currentItem.y - contentY : 0
property real currentItemBottom: currentItem !== null ? currentItemTop + currentItem.height : 0
function scrollDown() {
if (count == 0) {
return; // No items
}
if (selectable) {
if (currentIndex === -1) {
// If no item is selected, select the first one.
currentItem = 0;
return;
}
if (currentIndex < count && currentItemBottom < height) {
// If the next item is visible, highlight it
incrementCurrentIndex();
}
if (currentItemBottom >= height) {
// If the next item now is still not visible, scroll
contentY += 96/3;
}
}
}
function scrollUp() {
if (count == 0) {
return; // No items
}
if (selectable) {
if (currentIndex === -1) {
// If no item is selected, select the last one.
currentIndex = count - 1;
return;
}
if (currentIndex >= 0 && currentItemTop > 0) {
// If the previous item is visible, highlight it
decrementCurrentIndex();
}
if (currentItemTop <= 0) {
// If the previous item now is still not visible, scroll
var newContentY = contentY - 96/3;
if (newContentY < 0) {
contentY = 0; // Never overscroll.
} else {
contentY = newContentY;
}
}
}
}
}
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