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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Quick Controls module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.1
import QtQuick.Controls 1.1
import QtQuick.Controls.Styles 1.1
Loader {
id: menuFrameLoader
readonly property Style __style: styleLoader.item
readonly property Component menuItemStyle: __style ? __style.menuItem : null
property var menu: root
property alias contentWidth: content.width
property alias contentHeight: content.height
readonly property int subMenuXPos: width + (item && item["subMenuOverlap"] || 0)
visible: status === Loader.Ready
sourceComponent: __style ? __style.frame : undefined
Loader {
id: styleLoader
active: !menu.isNative
sourceComponent: menu.style
property alias __control: menuFrameLoader
onStatusChanged: {
if (status === Loader.Error)
console.error("Failed to load Style for", menu)
}
}
focus: true
property var mnemonicsMap: ({})
Keys.onPressed: {
var item = null
if (!(event.modifiers & Qt.AltModifier)
&& (item = mnemonicsMap[event.text.toUpperCase()])) {
if (item.isSubmenu) {
menu.__currentIndex = item.menuItemIndex
item.showSubMenu(true)
item.menuItem.__currentIndex = 0
} else {
triggerAndDismiss(item)
}
event.accepted = true
} else {
event.accepted = false
}
}
Keys.onEscapePressed: menu.__dismissMenu()
Keys.onDownPressed: {
if (menu.__currentIndex < 0)
menu.__currentIndex = -1
for (var i = menu.__currentIndex + 1;
i < menu.items.length && !canBeHovered(i); i++)
;
event.accepted = true
}
Keys.onUpPressed: {
for (var i = menu.__currentIndex - 1;
i >= 0 && !canBeHovered(i); i--)
;
event.accepted = true
}
function canBeHovered(index) {
var item = content.menuItemAt(index)
if (item && !item["isSeparator"] && item.enabled) {
menu.__currentIndex = index
return true
}
return false
}
Keys.onLeftPressed: {
if ((event.accepted = menu.__parentMenu.hasOwnProperty("title")))
__closeMenu()
}
Keys.onRightPressed: {
var item = content.menuItemAt(menu.__currentIndex)
if ((event.accepted = (item && item.isSubmenu))) {
item.showSubMenu(true)
item.menuItem.__currentIndex = 0
}
}
Keys.onSpacePressed: triggerCurrent()
Keys.onReturnPressed: triggerCurrent()
Keys.onEnterPressed: triggerCurrent()
function triggerCurrent() {
var item = content.menuItemAt(menu.__currentIndex)
if (item)
content.triggered(item)
}
function triggerAndDismiss(item) {
if (item && !item.isSeparator) {
menu.__dismissMenu()
if (!item.isSubmenu)
item.menuItem.trigger()
}
}
Binding {
// Make sure the styled frame is in the background
target: item
property: "z"
value: content.z - 1
}
ColumnMenuContent {
id: content
menuItemDelegate: menuItemComponent
scrollerStyle: __style ? __style.scrollerStyle : undefined
itemsModel: menu.items
margin: menuFrameLoader.item ? menuFrameLoader.item.margin : 0
minWidth: menu.__minimumWidth
maxHeight: menuFrameLoader.item ? menuFrameLoader.item.maxHeight : 0
onTriggered: triggerAndDismiss(item)
}
Component {
id: menuItemComponent
Loader {
id: menuItemLoader
property var menuItem: modelData
readonly property bool isSeparator: !!menuItem && menuItem.type === MenuItemType.Separator
readonly property bool isSubmenu: !!menuItem && menuItem.type === MenuItemType.Menu
property bool selected: !(isSeparator || !!scrollerDirection) && menu.__currentIndex === index
property string text: isSubmenu ? menuItem.title : !(isSeparator || !!scrollerDirection) ? menuItem.text : ""
property bool showUnderlined: menu.__contentItem.altPressed
readonly property var scrollerDirection: menuItem["scrollerDirection"]
property int menuItemIndex: index
sourceComponent: menuFrameLoader.menuItemStyle
enabled: visible && !isSeparator && !!menuItem && menuItem.enabled
visible: !!menuItem && menuItem.visible
active: visible
function showSubMenu(immediately) {
if (immediately) {
if (menu.__currentIndex === menuItemIndex)
menuItem.__popup(menuFrameLoader.subMenuXPos, 0, -1)
} else {
openMenuTimer.start()
}
}
Timer {
id: openMenuTimer
interval: 50
onTriggered: menuItemLoader.showSubMenu(true)
}
function closeSubMenu() { closeMenuTimer.start() }
Timer {
id: closeMenuTimer
interval: 1
onTriggered: {
if (menu.__currentIndex !== menuItemIndex)
menuItem.__closeMenu()
}
}
onLoaded: {
menuItem.__visualItem = menuItemLoader
if (content.width < item.implicitWidth)
content.width = item.implicitWidth
var title = text
var ampersandPos = title.indexOf("&")
if (ampersandPos !== -1)
menuFrameLoader.mnemonicsMap[title[ampersandPos + 1].toUpperCase()] = menuItemLoader
}
Binding {
target: menuItemLoader.item
property: "width"
property alias menuItem: menuItemLoader.item
value: menuItem ? Math.max(menu.__minimumWidth, content.width) - 2 * menuItem.x : 0
}
}
}
}
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