Qt QML dropdown list like in HTML - qt

Question

Simple thing, but can't get find it. I want a simple dropdown selection box with a couple of selections. Like in HTML
<select>
<option>1</option>
<option>2</option>
</select>
what is the code for QML for that ?

Answer 1

Here's a simple example that could maybe be used as a starting point:
import QtQuick 1.0
Rectangle {
width:400;
height: 400;
Rectangle {
id:comboBox
property variant items: ["Item 1", "Item 2", "Item 3"]
property alias selectedItem: chosenItemText.text;
property alias selectedIndex: listView.currentIndex;
signal comboClicked;
width: 100;
height: 30;
z: 100;
smooth:true;
Rectangle {
id:chosenItem
radius:4;
width:parent.width;
height:comboBox.height;
color: "lightsteelblue"
smooth:true;
Text {
anchors.top: parent.top;
anchors.left: parent.left;
anchors.margins: 8;
id:chosenItemText
text:comboBox.items[0];
font.family: "Arial"
font.pointSize: 14;
smooth:true
}
MouseArea {
anchors.fill: parent;
onClicked: {
comboBox.state = comboBox.state==="dropDown"?"":"dropDown"
}
}
}
Rectangle {
id:dropDown
width:comboBox.width;
height:0;
clip:true;
radius:4;
anchors.top: chosenItem.bottom;
anchors.margins: 2;
color: "lightgray"
ListView {
id:listView
height:500;
model: comboBox.items
currentIndex: 0
delegate: Item{
width:comboBox.width;
height: comboBox.height;
Text {
text: modelData
anchors.top: parent.top;
anchors.left: parent.left;
anchors.margins: 5;
}
MouseArea {
anchors.fill: parent;
onClicked: {
comboBox.state = ""
var prevSelection = chosenItemText.text
chosenItemText.text = modelData
if(chosenItemText.text != prevSelection){
comboBox.comboClicked();
}
listView.currentIndex = index;
}
}
}
}
}
Component {
id: highlight
Rectangle {
width:comboBox.width;
height:comboBox.height;
color: "red";
radius: 4
}
}
states: State {
name: "dropDown";
PropertyChanges { target: dropDown; height:40*comboBox.items.length }
}
transitions: Transition {
NumberAnimation { target: dropDown; properties: "height"; easing.type: Easing.OutExpo; duration: 1000 }
}
}
}

Answer 2

For new users, there is a built in ComboBox in Qt5.3 QtQuick.Controls ComboBox - Reference.
Example from Documentation:
import QtQuick 2.2
import QtQuick.Controls 1.2
ComboBox {
id: combo
editable: true
model: ListModel {
id: model
ListElement { text: "Banana"; color: "Yellow" }
ListElement { text: "Apple"; color: "Green" }
ListElement { text: "Coconut"; color: "Brown" }
}
onAccepted: {
if (combo.find(currentText) === -1) {
model.append({text: editText})
currentIndex = combo.find(editText)
}
}
}
Note: I had to post it as an answer, since the text is too long for a comment.

Answer 3

I've been using approaches with ComboBoxStyle (customization capabilities limited) and completely custom implementations, but they have a lot of limitations with focus management and z-index management.
I've end up with the implementation of ComboBox which consists of 2 parts: a header which you actually put somewhere and a dropdown component which you create dynamically. The latter consists of an Item covering everything (and intercepting mouse activity) and a dropdown which is carefully positioned below the header.
Code is pretty massive to included here so you can see details in my blogpost with all the code

Answer 4

If you targeting Nokia devices (Symbian or Meego), you could use high-level Qt Quick components. I believe Menu is something similar to html's select.
See http://doc.qt.nokia.com/qt-components-symbian/qml-menu.html or http://harmattan-dev.nokia.com/docs/library/html/qt-components/qt-components-meego-menu.html

Answer 5

If you are targeting Symbian, there is SelectionListItem and SelectionDialog:
http://doc.qt.nokia.com/qt-components-symbian/qml-selectionlistitem.html