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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Components project.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 Nokia Corporation 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 2.0
import "private" as Private
import QtDesktop 0.2
/*
*
* ComboBox (inherits BasicButton)
*
* The ComboBox component is a combined button and popup list. The popup menu itself is platform
* native, and cannot by styled from QML code.
* Add menu items to the comboBox by either adding MenuItem children inside the popup, or
* assign it a ListModel (or both).
*
* The ComboBox contains the following API (in addition to the BasicButton API):
*
* ListModel model - this model will be used, in addition to MenuItem children, to
* create items inside the popup menu
* bool popupOpen - setting this property to 'true' will open the popup.
* int selectedIndex - the index of the selected item in the popup menu.
* int hoveredIndex - the index of the highlighted item in the popup menu.
* string selectedText - the text of the selected menu item.
* string hoveredText - the text of the highlighted menu item.
*
* Example 1:
*
* ListModel {
* id: menuItems
* ListElement { text: "Banana"; color: "Yellow" }
* ListElement { text: "Apple"; color: "Green" }
* ListElement { text: "Coconut"; color: "Brown" }
* }
* ComboBox {
* model: menuItems
* width: 200
* onSelectedIndexChanged: console.debug(selectedText + ", " + menuItems.get(selectedIndex).color)
* }
*
* Example 2:
*
* ComboBox {
* width: 200
* MenuItem {
* text: "Pineapple"
* onSelected: console.debug(text)
*
* }
* MenuItem {
* text: "Grape"
* onSelected: console.debug(text)
* }
* }
*
*/
Private.BasicButton {
id: comboBox
default property alias menuItems: popup.menuItems
property alias model: popup.model
property alias popupOpen: popup.visible
property alias selectedIndex: popup.selectedIndex
property alias hoveredIndex: popup.hoveredIndex
property alias selectedText: popup.selectedText
property alias hoveredText: popup.hoveredText
property string styleHint
delegate: StyleItem {
anchors.fill: parent
elementType: "combobox"
sunken: comboBox.pressed
raised: !sunken
hover: comboBox.containsMouse
enabled: comboBox.enabled
text: comboBox.selectedText
hasFocus: comboBox.focus
contentHeight: 18
Component.onCompleted: popup.center = styleHint("comboboxpopup");
}
// ToDo: adjust margins so that selected popup label
// centers directly above button label when
// popup.centerOnSelectedText === true
width: implicitWidth
height: implicitHeight
onWidthChanged: popup.setMinimumWidth(width)
checkable: false
onPressedChanged: if (pressed) popup.visible = true
ContextMenu {
id: popup
property bool center: false
centerSelectedText: center
y: center ? 0 : comboBox.height
}
// The key bindings below will only be in use when popup is
// not visible. Otherwise, native popup key handling will take place:
Keys.onSpacePressed: { comboBox.popupOpen = !comboBox.popupOpen }
Keys.onUpPressed: { if (selectedIndex < model.count - 1) selectedIndex++ }
Keys.onDownPressed: { if (selectedIndex > 0) selectedIndex-- }
}
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