This seems trivial, but I can't find the answer anywhere on the internet.
I have some QML code, and in that I have some JavaScript code that enumerates through an array and creates a button for each item in the array. I need to be able to initialise a Button object in that JavaScript, but running var btn = new Button() results in a type error.
How do I make a Qt Quick object at runtime?
Qml affords many ways to do this.
Use a Repeater (or other model-based instantiator depending on needs, like ListView, Instantiator), whose model can be an array:
Row {
Repeater {
id: repeater
delegate: Button {
text: modelData
}
Component.onCompleted: repeater.model = ["button1", "button2"] // JS array
}
}
If your array is more complex than this, you can parse your array into a ListModel:
Row {
Repeater {
id: repeater1
model: ListModel { }
delegate: Button {
text: model.myText
}
Component.onCompleted: {
let array = ["button1", "button2"]
for (let i = 0; i < array.length; i++) {
repeater1.model.append({myText: array[i]})
}
}
}
}
As JarMan suggested, dynamically create buttons in JS (there are many ways to do this method as shown in the documentation he linked):
Row {
Component.onCompleted: {
let array = ["button1", "button2"]
for (let i = 0; i < array.length; i++) {
let newButton = buttonComponent.createObject(this, {})
newButton.text = array[i]
}
}
Component {
id: buttonComponent
Button { }
}
}
All of these examples result in the same outcome:
