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import Qt 4.7
ListView {
id: list
property bool selectable: true
property bool indicator: true
interactive: false
highlightFollowsCurrentItem: false
keyNavigationWraps: false
boundsBehavior: Flickable.StopAtBounds
flickableDirection: Flickable.VerticalFlick
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) {
var prevContentY = contentY;
// If the previous item is visible, highlight it
decrementCurrentIndex();
// ListView will "smoothtly scroll the list" even if hightlightFollowsCurrentItem is false,
// so we have to add the following ugly workaround:
contentY = prevContentY;
}
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;
}
}
}
}
function scrollTop() {
if (count == 0) {
return;
}
if (selectable) {
currentIndex = 0;
}
positionViewAtIndex(0, ListView.Beginning);
}
Rectangle {
id: indicatorCont
visible: list.indicator && (list.contentHeight > list.height)
anchors.top: parent.top
anchors.right: parent.right
anchors.bottom: parent.bottom
width: 4
color: "white"
Rectangle {
id: indicatorRect
property int minHeight: 10
anchors.right: parent.right
anchors.left: parent.left
anchors.leftMargin: 1
y: list.visibleArea.yPosition * indicatorCont.height
height: Math.max(minHeight, list.visibleArea.heightRatio * indicatorCont.height)
color: "black"
}
}
}
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