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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Quick Controls module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 Digia Plc and its Subsidiary(-ies) 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
import QtQuick.Controls.Private 1.0
/*!
\qmltype Menu
\inqmlmodule QtQuick.Controls
\since QtQuick.Controls 1.0
\ingroup menus
\brief Provides a menu component for use in menu bars, as context menu,
and other popup menus.
\code
Menu {
title: "Edit"
MenuItem {
text: "Cut"
shortcut: "Ctrl+X"
onTriggered: ...
}
MenuItem {
text: "Copy"
shortcut: "Ctrl+C"
onTriggered: ...
}
MenuItem {
text: "Paste"
shortcut: "Ctrl+V"
onTriggered: ...
}
MenuSeparator { }
Menu {
title: "More Stuff"
MenuItem {
text: "Do Nothing"
}
}
}
\endcode
The main uses for menus:
\list
\li
as a \e top-level menu in a \l MenuBar
\li
as a \e submenu inside another menu
\li
as a standalone or \e context menu
\endlist
Note that some properties, such as \c enabled, \c text, or \c iconSource,
only make sense in a particular use case of the menu.
\sa MenuBar, MenuItem, MenuSeparator
*/
MenuPrivate {
id: root
/*! \internal
\omit
Documented in qqquickmenu.cpp.
\endomit
*/
function addMenu(title) {
return root.insertMenu(items.length, title)
}
/*! \internal
\omit
Documented in qquickmenu.cpp.
\endomit
*/
function insertMenu(index, title) {
if (!__selfComponent)
__selfComponent = Qt.createComponent("Menu.qml", root)
var submenu = __selfComponent.createObject(__selfComponent, { "title": title })
root.insertItem(index, submenu)
return submenu
}
/*! \internal */
property Component __selfComponent: null
/*! \internal */
property Component style: Qt.createComponent(Settings.style + "/MenuStyle.qml", root)
/*! \internal */
property var __parentContentItem: __parentMenu.__contentItem
/*! \internal */
property int __currentIndex: -1
/*! \internal */
on__MenuClosed: __currentIndex = -1
/*! \internal */
__contentItem: Loader {
sourceComponent: __menuComponent
active: !root.__isNative && root.__popupVisible
focus: true
Keys.forwardTo: item ? [item, root.__parentContentItem] : []
property bool altPressed: root.__parentContentItem ? root.__parentContentItem.altPressed : false
}
/*! \internal */
property Component __menuComponent: Loader {
id: menuFrameLoader
property Style __style: styleLoader.item
property Component menuItemStyle: __style ? __style.menuItem : null
property var control: root
property alias contentWidth: column.width
property alias contentHeight: column.height
property int subMenuXPos: width + (item && item["subMenuOverlap"] || 0)
visible: status === Loader.Ready
sourceComponent: __style ? __style.frame : undefined
Loader {
id: styleLoader
active: !root.isNative
sourceComponent: root.style
property alias __control: menuFrameLoader
onStatusChanged: {
if (status === Loader.Error)
console.error("Failed to load Style for", root)
}
}
focus: true
property var mnemonicsMap: ({})
Keys.onPressed: {
var item = null
if (!(event.modifiers & Qt.AltModifier)
&& (item = mnemonicsMap[event.text.toUpperCase()])) {
if (item.isSubmenu) {
root.__currentIndex = item.menuItemIndex
item.showSubMenu(true)
item.menuItem.__currentIndex = 0
} else {
triggerAndDismiss(item)
}
event.accepted = true
} else {
event.accepted = false
}
}
Keys.onEscapePressed: root.__dismissMenu()
Keys.onDownPressed: {
if (root.__currentIndex < 0)
root.__currentIndex = -1
for (var i = root.__currentIndex + 1;
i < root.items.length && !canBeHovered(i); i++)
;
}
Keys.onUpPressed: {
for (var i = root.__currentIndex - 1;
i >= 0 && !canBeHovered(i); i--)
;
}
function canBeHovered(index) {
var item = itemsRepeater.itemAt(index)
if (!item["isSeparator"] && item.enabled) {
root.__currentIndex = index
return true
}
return false
}
Keys.onLeftPressed: {
if ((event.accepted = root.__parentMenu.hasOwnProperty("title")))
__closeMenu()
}
Keys.onRightPressed: {
var item = itemsRepeater.itemAt(root.__currentIndex)
if ((event.accepted = (item && item.isSubmenu))) {
item.showSubMenu(true)
item.menuItem.__currentIndex = 0
}
}
Keys.onSpacePressed: menuFrameLoader.triggerAndDismiss()
Keys.onReturnPressed: menuFrameLoader.triggerAndDismiss()
Keys.onEnterPressed: menuFrameLoader.triggerAndDismiss()
function triggerAndDismiss(item) {
if (!item)
item = itemsRepeater.itemAt(root.__currentIndex)
if (item && !item.isSeparator) {
root.__dismissMenu()
if (!item.isSubmenu)
item.menuItem.trigger()
}
}
Binding {
// Make sure the styled frame is in the background
target: menuFrameLoader.item
property: "z"
value: menuMouseArea.z - 1
}
MouseArea {
id: menuMouseArea
anchors.fill: parent
hoverEnabled: true
acceptedButtons: Qt.AllButtons
onPositionChanged: updateCurrentItem(mouse)
onReleased: menuFrameLoader.triggerAndDismiss()
onExited: {
if (currentItem && !currentItem.menuItem.__popupVisible) {
currentItem = null
root.__currentIndex = -1
}
}
property Item currentItem: null
function updateCurrentItem(mouse) {
var pos = mapToItem(column, mouse.x, mouse.y)
if (!currentItem || !currentItem.contains(Qt.point(pos.x - currentItem.x, pos.y - currentItem.y))) {
if (currentItem && !pressed && currentItem.isSubmenu)
currentItem.closeSubMenu()
var itemUnderMouse = column.childAt(pos.x, pos.y)
if (itemUnderMouse) {
currentItem = itemUnderMouse
} else if (currentItem) {
var itemItem = currentItem.item
if (!itemItem.contains(itemItem.mapFromItem(column, pos)))
currentItem = null
}
if (currentItem) {
root.__currentIndex = currentItem.menuItemIndex
if (currentItem.isSubmenu && !currentItem.menuItem.__popupVisible)
currentItem.showSubMenu(false)
} else {
root.__currentIndex = -1
}
}
}
// Each menu item has its own mouse area, and for events to be
// propagated to the menu mouse area, they need to be embedded.
Column {
id: column
Repeater {
id: itemsRepeater
model: root.items
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 && root.__currentIndex === index
property string text: isSubmenu ? menuItem.title : !isSeparator ? menuItem.text : ""
property bool showUnderlined: __contentItem.altPressed
property int menuItemIndex: index
sourceComponent: menuFrameLoader.menuItemStyle
enabled: visible && !isSeparator && !!menuItem && menuItem.enabled
visible: menuItem.visible
active: visible
function showSubMenu(immediately) {
if (immediately) {
if (root.__currentIndex === menuItemIndex) {
if (Qt.application.layoutDirection === Qt.RightToLeft)
menuItem.__popup(0, 0, -1)
else
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 (root.__currentIndex !== menuItemIndex)
menuItem.__closeMenu()
}
}
Component.onCompleted: {
menuItem.__visualItem = menuItemLoader
var title = text
var ampersandPos = title.indexOf("&")
if (ampersandPos !== -1)
menuFrameLoader.mnemonicsMap[title[ampersandPos + 1].toUpperCase()] = menuItemLoader
}
}
}
onWidthChanged: {
for (var i = 0; i < children.length; i++) {
var item = children[i]["item"]
if (item)
item.implicitWidth = Math.max(root.__minimumWidth, implicitWidth)
}
}
}
}
}
}
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