git.iko.soy/unity8
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unity8/Components/ListItems/Base.qml
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1/*
2 * Copyright (C) 2012 Canonical, Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 3.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
17import QtQuick 2.0
18import Ubuntu.Components 0.1
20AbstractButton {
21 id: emptyListItem
22 width: parent ? parent.width : units.gu(31)
23 height: body.height + bottomDividerLine.height
25 /*!
26 \preliminary
27 Specifies whether the list item is selected.
28 */
29 property bool selected: false
31 /*!
32 \preliminary
33 Highlight the list item when it is pressed.
34 This is used to disable the highlighting of the full list item
35 when custom highlighting needs to be implemented (for example in
36 ListItem.Standard which can have a split).
37 */
38 property bool highlightWhenPressed: true
40 /*!
41 \preliminary
42 Set to show or hide the thin bottom divider line (drawn by the \l ThinDivider component).
43 This line is shown by default except in cases where this item is the delegate of a ListView.
44 */
45 property bool showDivider: __showDivider()
47 /*!
48 \internal
49 Method to automatically determine if the bottom divider line should be drawn.
50 This always returns true, unless item is a delegate in a ListView. If in a ListView
51 it will return false only when:
52 + if this is the final item in the list, and ListView.footer is set (again as thin
53 divider line won't look well with footer below it)
54 */
55 function __showDivider() {
56 // if we're not in ListView, always show a thin dividing line at the bottom
57 if (ListView.view !== null) {
59 // if we're last item in ListView don't show divider
60 if (index === ListView.view.model.count - 1) return false;
61 }
62 return true;
63 }
65 property bool __clippingRequired: ListView.view !== null
66 && ListView.view.section.labelPositioning & ViewSection.CurrentLabelAtStart
68 property real __yPositionRelativeToListView: ListView.view ? y - ListView.view.contentY : y
70 property real __heightToClip: {
71 // Check this is in position where clipping is needed
72 if (__clippingRequired && __yPositionRelativeToListView <= __sectionDelegateHeight
73 && __yPositionRelativeToListView > -height) {
74 return Math.min(__sectionDelegateHeight - __yPositionRelativeToListView, height);
75 } else {
76 return 0;
77 }
78 }
80 property int __sectionDelegateHeight: {
81 if (__clippingRequired && ListView.view.hasOwnProperty("__sectionDelegateHeight")) {
82 return ListView.view.__sectionDelegateHeight;
83 } else {
84 return 0;
85 }
86 }
88 /*!
89 \internal
90 Reparent so that the visuals of the children does not
91 occlude the bottom divider line.
92 */
93 default property alias children: body.children
95 Item {
96 id: clippingContainer
97 height: parent.height - __heightToClip
98 anchors { left: parent.left; right: parent.right; bottom: parent.bottom }
99 clip: __heightToClip > 0
101 Item {
102 id: body
103 anchors {
104 left: parent.left
105 right: parent.right
106 bottom: bottomDividerLine.top
107 }
108 height: childrenRect.height
109 }
111 ThinDivider {
112 id: bottomDividerLine
113 anchors.bottom: parent.bottom
114 visible: showDivider
115 }
117 Highlight {
118 anchors {
119 top: parent.top
120 left: parent.left
121 right: parent.right
122 bottom: bottomDividerLine.top
123 }
124 pressed: (emptyListItem.selected || (emptyListItem.highlightWhenPressed && emptyListItem.pressed)) ? "pressed" : ""
125 }
126 }