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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 1.0
import QtQuick.Controls.Private 1.0
import "Styles/Settings.js" as Settings
/*!
\qmltype ComboBox
\inqmlmodule QtQuick.Controls 1.0
\ingroup controls
\brief ComboBox is a combined button and popup or drop-down list.
Add items to the comboBox by assigning it a ListModel, or a list of strings to the \l model property.
\qml
ComboBox {
width: 200
model: [ "Banana", "Apple", "Coconut" ]
}
\endqml
Example 2:
\qml
ComboBox {
model: ListModel {
id: cbItems
ListElement { text: "Banana"; color: "Yellow" }
ListElement { text: "Apple"; color: "Green" }
ListElement { text: "Coconut"; color: "Brown" }
}
width: 200
onCurrentIndexChanged: console.debug(currentText + ", " + cbItems.get(currentIndex).color)
}
\endqml
*/
Control {
id: comboBox
/*! The model to populate the ComboBox from. */
property alias model: popup.model
property alias textRole: popup.textRole
/*! The index of the currently selected item in the ComboBox. */
property alias currentIndex: popup.__selectedIndex
/*! The text of the currently selected item in the ComboBox. */
readonly property alias currentText: popup.selectedText
/* \internal */
readonly property bool __pressed: mouseArea.pressed && mouseArea.containsMouse || popup.__popupVisible
/* \internal */
property alias __containsMouse: mouseArea.containsMouse
style: Qt.createComponent(Settings.THEME_PATH + "/ComboBoxStyle.qml", comboBox)
activeFocusOnTab: true
Accessible.role: Accessible.ComboBox
MouseArea {
id: mouseArea
anchors.fill: parent
hoverEnabled: true
onPressedChanged: if (pressed) popup.show()
}
StyleItem { id: styleItem }
Component.onCompleted: {
if (currentIndex === -1)
currentIndex = 0
if (styleItem.style == "mac") {
popup.x -= 10
popup.y += 4
popup.__font.pointSize = 13
}
}
Menu {
id: popup
style: isPopup ? __style.popupStyle : __style.dropDownStyle
readonly property string selectedText: items[__selectedIndex] ? items[__selectedIndex].text : ""
property string textRole: ""
property var model
property int modelSize: 0
property bool ready: false
property bool isPopup: comboBox.__panel.popup
property int x: 0
property int y: isPopup ? 0 : comboBox.height
__minimumWidth: comboBox.width
__visualItem: comboBox
property ExclusiveGroup eg: ExclusiveGroup { id: eg }
onModelChanged: rebuildMenu()
onTextRoleChanged: rebuildMenu()
Component.onCompleted: { ready = true; rebuildMenu() }
function rebuildMenu() {
if (!ready) return;
clear()
if (!model) {
__selectedIndexChanged();
return;
}
var isNumberModel = typeof(model) === "number"
var modelMayHaveRoles = model.count !== undefined
modelSize = isNumberModel ? model :
modelMayHaveRoles ? model.count : model.length
var effectiveTextRole = textRole
if (effectiveTextRole === ""
&& modelMayHaveRoles
&& model.get && model.get(0)) {
// No text role set, check whether model has a suitable role
// If 'text' is found, or there's only one role, pick that.
var listElement = model.get(0)
var roleName = ""
var roleCount = 0
for (var role in listElement) {
if (role === "text") {
roleName = role
break
} else if (!roleName) {
roleName = role
}
++roleCount
}
if (roleCount > 1 && roleName !== "text") {
console.warn("No suitable 'textRole' found for ComboBox.")
} else {
effectiveTextRole = roleName
}
}
for (var i = 0; i < modelSize; ++i) {
var textValue
if (isNumberModel)
textValue = i + ""
else if (effectiveTextRole !== "")
textValue = model.get(i)[effectiveTextRole]
else
textValue = model[i]
var item = addItem(textValue)
item.checkable = true
item.exclusiveGroup = eg
}
__selectedIndexChanged();
}
function show() {
if (items[__selectedIndex])
items[__selectedIndex].checked = true
__currentIndex = comboBox.currentIndex
__popup(x, y, isPopup ? __selectedIndex : 0)
}
}
// The key bindings below will only be in use when popup is
// not visible. Otherwise, native popup key handling will take place:
Keys.onSpacePressed: {
if (!popup.popupVisible)
popup.show()
}
Keys.onUpPressed: { if (currentIndex > 0) currentIndex-- }
Keys.onDownPressed: { if (currentIndex < popup.modelSize - 1) currentIndex++ }
}
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