Function QObject

Plugins/WebBrowser/Resource/js/QWebChannel.js:178–441

(name, data, webChannel)

};

function QObject(name, data, webChannel)
{
    this.__id__ = name;
    webChannel.objects[name] = this;

    // List of callbacks that get invoked upon signal emission
    this.__objectSignals__ = {};

    // Cache of all properties, updated when a notify signal is emitted
    this.__propertyCache__ = {};

    var object = this;

    // ----------------------------------------------------------------------

    this.unwrapQObject = function(response)
    {
        for (const converter of webChannel.usedConverters) {
            var result = converter(response);
            if (result !== undefined)
                return result;
        }

        if (response instanceof Array) {
            // support list of objects
            return response.map(qobj => object.unwrapQObject(qobj))
        }
        if (!(response instanceof Object))
            return response;

        if (!response["__QObject*__"] || response.id === undefined) {
            var jObj = {};
            for (const propName of Object.keys(response)) {
                jObj[propName] = object.unwrapQObject(response[propName]);
            }
            return jObj;
        }

        var objectId = response.id;
        if (webChannel.objects[objectId])
            return webChannel.objects[objectId];

        if (!response.data) {
            console.error("Cannot unwrap unknown QObject " + objectId + " without data.");
            return;
        }

        var qObject = new QObject( objectId, response.data, webChannel );
        qObject.destroyed.connect(function() {
            if (webChannel.objects[objectId] === qObject) {
                delete webChannel.objects[objectId];
                // reset the now deleted QObject to an empty {} object
                // just assigning {} though would not have the desired effect, but the
                // below also ensures all external references will see the empty map
                // NOTE: this detour is necessary to workaround QTBUG-40021
                Object.keys(qObject).forEach(name => delete qObject[name]);
            }
        });