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/*
Copyright (C) 2016 Michael Bohlender, <michael.bohlender@kdemail.net>
Copyright (C) 2017 Christian Mollekopf, <mollekopf@kolabsystems.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
import QtQuick 2.4
import QtQuick.Controls 1.4
import QtQuick.Controls 2 as Controls2
import QtQuick.Controls.Styles 1.4
import QtQuick.Layouts 1.1
import QtQml.Models 2.2
import org.kube.framework 1.0 as Kube
FocusScope {
id: root
default property alias __columns: treeView.__columns
property alias model: treeView.model
property alias currentIndex: treeView.currentIndex
/*
* Because active focus is useless in list/treeviews we use the concept of an activeIndex.
* The current selection represents the focused index. The activeIndex represents the selected index.
*/
property var activeIndex: null
signal dropped(var drop, var model)
signal activated(var index)
onActivated: {
activeIndex = index
}
Flickable {
id: flickableItem
anchors.fill: parent
Controls2.ScrollBar.vertical: Controls2.ScrollBar {}
clip: true
contentWidth: root.width
contentHeight: treeView.implicitHeight
Kube.ScrollHelper {
id: scrollHelper
flickable: flickableItem
}
TreeView {
id: treeView
anchors {
left: parent.left
right: parent.right
}
implicitHeight: __listView.contentItem.height + 2
height: implicitHeight
focus: true
verticalScrollBarPolicy: Qt.ScrollBarAlwaysOff
horizontalScrollBarPolicy: Qt.ScrollBarAlwaysOff
Kube.MouseProxy {
anchors.fill: parent
target: scrollHelper
forwardWheelEvents: true
}
flickableItem.boundsBehavior: Flickable.StopAtBounds
selection: ItemSelectionModel {
model: treeView.model
//TODO once we don't loose focus to the next view
// onCurrentChanged: {
// treeView.activated(selection.currentIndex)
// }
//TODO scroll view so the current index is always visible
}
function selectFirst()
{
treeView.selection.setCurrentIndex(model.index(0, 0), ItemSelectionModel.ClearAndSelect)
}
function selectNext()
{
//If we have already expanded children go to them instead
var childIndex = model.index(0, 0, selection.currentIndex)
if (childIndex.valid && treeView.isExpanded(selection.currentIndex)) {
treeView.selection.setCurrentIndex(childIndex, ItemSelectionModel.ClearAndSelect)
} else {
//Otherwise just advance to the next index, if we can
var nextIndex = model.sibling(selection.currentIndex.row + 1, 0, selection.currentIndex)
if (nextIndex.valid) {
treeView.selection.setCurrentIndex(nextIndex, ItemSelectionModel.ClearAndSelect)
} else {
//Try to go to the next of the parent instead TODO do this recursively
var parentIndex = model.parent(selection.currentIndex)
if (parentIndex.valid) {
var parentNext = model.sibling(parentIndex.row + 1, 0, parentIndex)
treeView.selection.setCurrentIndex(parentNext, ItemSelectionModel.ClearAndSelect)
}
}
}
}
function selectPrevious()
{
var previousIndex = model.sibling(selection.currentIndex.row - 1, 0, selection.currentIndex)
if (previousIndex.valid) {
treeView.selection.setCurrentIndex(previousIndex, ItemSelectionModel.ClearAndSelect)
//TODO if the previous index is expanded, go to the last visible child instead (recursively)
} else {
var parentIndex = model.parent(selection.currentIndex)
if (parentIndex.valid) {
treeView.selection.setCurrentIndex(parentIndex, ItemSelectionModel.ClearAndSelect)
}
}
}
onActiveFocusChanged: {
//Set an initially focused item when the list view receives focus
if (activeFocus && !selection.hasSelection) {
selectFirst()
}
}
Keys.onDownPressed: {
if (!selection.hasSelection) {
selectFirst()
} else {
selectNext();
}
}
Keys.onUpPressed: selectPrevious()
Keys.onReturnPressed: treeView.activated(selection.currentIndex)
Keys.onRightPressed: treeView.expand(selection.currentIndex)
Keys.onLeftPressed: treeView.collapse(selection.currentIndex)
//Forward the signal because on a desktopsystem activated is only triggerd by double clicks
onClicked: treeView.activated(index)
onActivated: root.activated(index)
alternatingRowColors: false
headerVisible: false
style: TreeViewStyle {
rowDelegate: Rectangle {
//FIXME Uses internal API to get to the model index
property bool isActive: root.activeIndex === treeView.__model.mapRowToModelIndex(styleData.row)
height: Kube.Units.gridUnit * 1.5
//FIXME This is the only way I could find to get the correct width. parent.width is way to wide
width: parent.parent.parent.width
color: Kube.Colors.textColor
Rectangle {
anchors.fill: parent
color: Kube.Colors.highlightColor
visible: isActive
}
Rectangle {
anchors.fill: parent
border.width: 2
border.color: Kube.Colors.focusedButtonColor
color: "transparent"
visible: styleData.selected
}
}
frame: Rectangle {
color: Kube.Colors.textColor
}
branchDelegate: Item {
width: 16
height: 16
Kube.Label {
anchors.centerIn: parent
color: Kube.Colors.viewBackgroundColor
text: styleData.isExpanded ? "-" : "+"
}
//radius: styleData.isExpanded ? 0 : 100
}
itemDelegate: Item {
DropArea {
anchors.fill: parent
Rectangle {
anchors.fill: parent
color: Kube.Colors.viewBackgroundColor
opacity: 0.3
visible: parent.containsDrag
}
onDropped: root.dropped(drop, model)
}
Kube.Label {
anchors {
verticalCenter: parent.verticalCenter
left: parent.left
right: parent.right
}
text: styleData.value
elide: Qt.ElideRight
font.underline: treeView.activeFocus && styleData.selected
color: Kube.Colors.viewBackgroundColor
}
}
backgroundColor: Kube.Colors.textColor
highlightedTextColor: Kube.Colors.highlightedTextColor
}
}
}
}
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