Using QML to assign global properties by invoking imported JavaScript functions

Utilizing the Universal style in my QtQuick application, I am seeking to implement a ColorDialog for adjusting the accent color.

My current setup looks like this:

ColorDialog {
    id: accChooser
    title: "Please choose a color"
        onAccepted: {
            setGlobalAccentColor(accChooser.color) 
        }
}

*It is worth noting that directly setting Universal.accent=... within a child item does not affect the parent component. Refer to this for more information.

Additionally, there is a function:

function setGlobalAccentColor(accentColor){
    Universal.accent = accentColor
}

Although this function works when defined within the same QML file as accChooser, when I attempt to define it in an external JS file (such as helpers.js) and import it using:

import "helpers.js" as JSHelpers

and use it in this manner:

ColorDialog{
...
    JSHelpers.setGlobalAccentColor(colorDialog.color)
...
}

it does not function as expected. No specific error or warning message is displayed in the output of the application.

Thank you.

Answer №1

Perhaps it is necessary to include the universal style in the javascript code.

The guide on universal style mentions the need to import it separately (refer to the dependency section).

To access the specific attributes of the Universal style, it must be imported separately.

You can attempt to import it as demonstrated below in your javascript file (helpers.js).

.import QtQuick.Controls.Universal 2.12 as JsUniversal

Afterwards, you can try to access it (for example: JsUniversal.accent..).

Answer №2

Keep in mind that placing Universal.accent=... within a child item will not impact the parent element. See this for reference.

Although changing it at the child level does not have a cascading effect on your entire application, you can apply it directly to the entire window.

Window.window.Universal.accent = accentColor;

Universal serves as an attached object that can be linked to any object, not limited to the current one, using

<object>.<AttachingType>
. To attach it to the parent window, access the window through another attached property: Window.window.

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