framework/qml/ListView.qml

0001 /*
0002  *  Copyright (C) 2016 Michael Bohlender, <michael.bohlender@kdemail.net>
0003  *  Copyright (C) 2017 Christian Mollekopf, <mollekopf@kolabsystems.com>
0004  *
0005  *  This program is free software; you can redistribute it and/or modify
0006  *  it under the terms of the GNU General Public License as published by
0007  *  the Free Software Foundation; either version 2 of the License, or
0008  *  (at your option) any later version.
0009  *
0010  *  This program is distributed in the hope that it will be useful,
0011  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
0012  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
0013  *  GNU General Public License for more details.
0014  *
0015  *  You should have received a copy of the GNU General Public License along
0016  *  with this program; if not, write to the Free Software Foundation, Inc.,
0017  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
0018  */
0019
0020 import QtQuick 2.15
0021 import QtQuick.Controls 2
0022 import org.kube.framework 1.0 as Kube
0023
0024 ListView {
0025     id: root
0026     property Item mouseProxy: scrollHelper
0027     property int availableWidth: scrollBar.visible ? width - scrollBar.width: width
0028     implicitHeight: contentHeight
0029
0030     clip: true
0031     ScrollBar.vertical: Kube.ScrollBar { id: scrollBar }
0032     highlightMoveDuration: 100
0033
0034     add: Transition {
0035         // FIXME Even though we handle interrupted transitions in the displaced handler,
0036         // we still occasionally end up with invisible items (e.g. when starting into the inbound view)
0037         // NumberAnimation { property: "opacity"; from: 0.1; to: 1.0; duration: 100 }
0038     }
0039
0040     displaced: Transition {
0041         //FIXME This causes some delegates to be invisible every now and then (no idea why)
0042         // NumberAnimation { properties: "x,y"; duration: 50 }
0043         //Handle interrupted add transitions
0044         NumberAnimation { property: "opacity"; to: 1.0; }
0045     }
0046
0047     Keys.onPressed: {
0048         if (event.matches(StandardKey.MoveToNextLine)) {
0049             incrementCurrentIndex()
0050         } else if (event.matches(StandardKey.MoveToPreviousLine)) {
0051             decrementCurrentIndex()
0052         }
0053     }
0054
0055     Kube.ScrollHelper {
0056         id: scrollHelper
0057         flickable: root
0058         anchors.fill: root
0059     }
0060
0061     onAtYEndChanged: {
0062         //The fetchMore logic doesn't work in the inbound view (not sure why, it should).
0063         //However, this does pretty much the same and works.
0064         if (atYEnd && model && typeof model.tryFetchMore === "function") {
0065             model.tryFetchMore()
0066         }
0067     }
0068 }
0069