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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import QtQuick 2.1
import QtQuick.Controls 1.1
import QtQuick.Controls.Styles 1.1
import QtQuick.Controls.Private 1.0
/*!
\qmltype MenuBar
\inqmlmodule QtQuick.Controls
\since 5.1
\ingroup applicationwindow
\brief Provides a horizontal menu bar.
\code
MenuBar {
Menu {
title: "File"
MenuItem { text: "Open..." }
MenuItem { text: "Close" }
}
Menu {
title: "Edit"
MenuItem { text: "Cut" }
MenuItem { text: "Copy" }
MenuItem { text: "Paste" }
}
}
\endcode
\sa ApplicationWindow::menuBar
*/
MenuBarPrivate {
id: root
/*! \internal */
property Component style: Qt.createComponent(Settings.style + "/MenuBarStyle.qml", root)
/*! \internal */
__contentItem: Loader {
id: topLoader
sourceComponent: __menuBarComponent
active: !root.__isNative
focus: true
Keys.forwardTo: [item]
property bool altPressed: item ? item.altPressed : false
}
/*! \internal */
property Component __menuBarComponent: Loader {
id: menuBarLoader
property Style __style: styleLoader.item
property Component menuItemStyle: __style ? __style.menuItem : null
property var control: root
onStatusChanged: if (status === Loader.Error) console.error("Failed to load panel for", root)
visible: status === Loader.Ready
sourceComponent: __style ? __style.frame : undefined
Loader {
id: styleLoader
property alias __control: menuBarLoader
sourceComponent: root.style
onStatusChanged: {
if (status === Loader.Error)
console.error("Failed to load Style for", root)
}
}
property int openedMenuIndex: -1
property bool preselectMenuItem: false
property alias contentHeight: row.height
Binding {
// Make sure the styled menu bar is in the background
target: menuBarLoader.item
property: "z"
value: menuMouseArea.z - 1
}
focus: true
property bool altPressed: false
property bool altPressedAgain: false
property var mnemonicsMap: ({})
Keys.onPressed: {
var action = null
if (event.key === Qt.Key_Alt) {
if (!altPressed)
altPressed = true
else
altPressedAgain = true
} else if (altPressed && (action = mnemonicsMap[event.text.toUpperCase()])) {
preselectMenuItem = true
action.trigger()
event.accepted = true
}
}
function dismissActiveFocus(event, reason) {
if (reason) {
altPressedAgain = false
altPressed = false
openedMenuIndex = -1
root.__contentItem.parent.forceActiveFocus()
} else {
event.accepted = false
}
}
Keys.onReleased: dismissActiveFocus(event, altPressedAgain && openedMenuIndex === -1)
Keys.onEscapePressed: dismissActiveFocus(event, openedMenuIndex === -1)
function maybeOpenFirstMenu(event) {
if (altPressed && openedMenuIndex === -1) {
preselectMenuItem = true
openedMenuIndex = 0
} else {
event.accepted = false
}
}
Keys.onUpPressed: maybeOpenFirstMenu(event)
Keys.onDownPressed: maybeOpenFirstMenu(event)
Keys.onLeftPressed: {
if (openedMenuIndex > 0) {
preselectMenuItem = true
openedMenuIndex--
}
}
Keys.onRightPressed: {
if (openedMenuIndex !== -1 && openedMenuIndex < root.menus.length - 1) {
preselectMenuItem = true
openedMenuIndex++
}
}
MouseArea {
id: menuMouseArea
anchors.fill: parent
hoverEnabled: true
onPositionChanged: updateCurrentItem(mouse, false)
onPressed: {
if (updateCurrentItem(mouse)) {
menuBarLoader.preselectMenuItem = false
menuBarLoader.openedMenuIndex = currentItem.menuItemIndex
}
}
onExited: hoveredItem = null
property Item currentItem: null
property Item hoveredItem: null
function updateCurrentItem(mouse) {
var pos = mapToItem(row, mouse.x, mouse.y)
if (!hoveredItem || !hoveredItem.contains(Qt.point(pos.x - currentItem.x, pos.y - currentItem.y))) {
hoveredItem = row.childAt(pos.x, pos.y)
if (!hoveredItem)
return false;
currentItem = hoveredItem
if (menuBarLoader.openedMenuIndex !== -1) {
menuBarLoader.preselectMenuItem = false
menuBarLoader.openedMenuIndex = currentItem.menuItemIndex
}
}
return true;
}
Row {
id: row
width: parent.width
LayoutMirroring.enabled: Qt.application.layoutDirection === Qt.RightToLeft
Repeater {
id: itemsRepeater
model: root.menus
Loader {
id: menuItemLoader
property var menuItem: modelData
property bool selected: menuMouseArea.hoveredItem === menuItemLoader
property bool sunken: menuItem.__popupVisible || menuBarLoader.openedMenuIndex === index
property bool showUnderlined: menuBarLoader.altPressed
sourceComponent: menuBarLoader.menuItemStyle
property int menuItemIndex: index
visible: menuItem.visible
Connections {
target: menuBarLoader
onOpenedMenuIndexChanged: {
if (menuBarLoader.openedMenuIndex === index) {
if (row.LayoutMirroring.enabled)
menuItem.__popup(menuItemLoader.width, menuBarLoader.height, 0)
else
menuItem.__popup(0, menuBarLoader.height, 0)
if (menuBarLoader.preselectMenuItem)
menuItem.__currentIndex = 0
} else {
menuItem.__closeMenu()
}
}
}
Connections {
target: menuItem
onPopupVisibleChanged: {
if (!menuItem.__popupVisible && menuBarLoader.openedMenuIndex === index)
menuBarLoader.openedMenuIndex = -1
}
}
Connections {
target: menuItem.__action
onTriggered: menuBarLoader.openedMenuIndex = menuItemIndex
}
Component.onCompleted: {
menuItem.__visualItem = menuItemLoader
var title = menuItem.title
var ampersandPos = title.indexOf("&")
if (ampersandPos !== -1)
menuBarLoader.mnemonicsMap[title[ampersandPos + 1].toUpperCase()] = menuItem.__action
}
}
}
}
}
}
}
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