Compare Items of listview and aray

Psyduck0205

Hello and good Morning.

I hope i can get help here with my Problem.

I have a listview which has a lot of delegates. I Need the text of all delegates in one Array so i can compare it to what is the expected Content in the list.
I use python as a language.

What i know:
I Need the Children of Children in the listview because there is one Content item in between.
But i cant make it work.
Do you have a small codesnippet that i can work with and build around? I just cant find a good way to start.

I would appreciate your help.

Have great day.

ODБOï

@Psyduck0205 hi
Do you want to use QML/js or python ?
Can you show what you did already ?

IntruderExcluder

You should operate with model data, not with delegates, since they are not actually exists when they get out of ListView viewport.

Psyduck0205

I have to use python.
I tried work around the object model like InteruderExcluder suggested

listview = squish.waitForObject(ecusListView)
model = listview.model

But with that, model is "null"
I tried to iterate over the Elements but like IntruderExcluder said, i cant past the non visible delegates. So im basicly at 0 again.
Any help of how i have to work around the model?

(Squish is basicly an IDE for GUI Testing. Thats what its all About. I Need to make sure that the model or delegates are correct in correlation to the entries in the database.)

ODБOï

@Psyduck0205
a qml js version in case it can help

Window {
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")

    property var myArr : [33,66.6,1.94]

    ListModel {
        id: fruitModel

        ListElement {
            name: "Apple"
            cost: 800
        }
        ListElement {
            name: "Orange"
            cost: 66.6
        }
        ListElement {
            name: "Banana"
            cost: 1.95
        }
    }

    ListView{
        id:l
        model: fruitModel
        anchors.fill: parent
        delegate: Text {
            height: 30
            width: parent.width
            text: name+  " : "+ cost
        }
    }

    Component.onCompleted: compare()

    function compare(){
        for(var e=0; e < l.model.count; e++){
            console.log( (l.model.get(e).cost === myArr[e]) )
        }
    }
}

Psyduck0205

		ListView {
			id: filteredElements

			anchors.fill: parent

			header: Item {}
			delegate: ListViewDelegate {
				onClicked: root.filteredClickHandler
			}

			model: root.controller.filteredModel

			listView.section.property: "shortName"
			listView.section.criteria: ViewSection.FirstCharacter
			listView.section.labelPositioning: ViewSection.CurrentLabelAtStart | ViewSection.InlineLabels
			listView.section.delegate: Component {
				id: sectionHeading
				Rectangle {
					width: parent.width
					height: childrenRect.height
					color: Style.rbsDarkGray

					Text {
						leftPadding: Style.listView.delegate.textPadding
						text: section
						font.bold: true
						font.pixelSize: 10
						color: Style.rbsLightBlue
					}
				}
			}

I digged trough our bitbucket and managed to finde the Definition of the listview. So that is basicly what i have to work with.
I dont realy understand how to Transfer the Code of LeLev to python.

console.log( (l.model.get(e).cost === myArr[e]) )

Does every l.model has a get() function?

Without compiling it i tried something:

listview = squish.waitForObject(ecusListView) #That Returns the objects QQuickListview
model = listview.model
maxcount = listview.count
myarray = []
for i in range(maxcount):
    myarray.append(listview.model.get(i).text)

Does that makes sense? Is that the Right way?

IntruderExcluder

If it is QML ListModel then yes, it has get method. For C++ models derived from QAbstractItemModel there is data method to retrieve data by role. Also rowCount and index are exposed to QML too.

Psyduck0205

@IntruderExcluder
Yes it is QML.

when i try to run it i get the following error:

Detail AttributeError: 'QVariant' Squish object has no attribute 'get' C:\Users\tsc\repos\rbsplus_guitests\suite_RBS_Plus_Test_Suite\shared\steps\steps.py:333

Line 333:
myarray.append(listview.model.get(i).text)

IntruderExcluder

I'm not familiar with python, but can give you an example in C++. Lets say you have some ListView with ListModel declared in main QML file:

    ListView {
        objectName: "view1"
        model: ListModel {
            ListElement { prop1: "asd"; prop2: 42 }
        }
    }

Here is an example how to get values for Qt 5.12.3 (it is a bit easier for greater versions):

    /* Get list view */
    auto view = engine.rootObjects()[0]->findChild<QObject*>("view1");
    /* Get model property */
    QQmlListModel* model = view->property("model").value<QQmlListModel*>();
    /* Some magic */
    auto handle = model->get(0);
    auto eengine = qmlEngine(model)->handle();
    QJSValue jsvalue(eengine, handle);
    /* Get values of ListElement item */
    QString prop1 = jsvalue.property("prop1").toString(); // "asd"
    int prop2 = jsvalue.property("prop2").toInt(); // 42

You also need to use qml-private modules, since QQmlListModel is private class.

Psyduck0205

Thank Intruder,

i understand how that works :)

The only Problem: I wondered why i couldnt use the get() function. And after a bit of searching i managed to Change the Code to that:

listview = squish.waitForObject(ecusListView)
model = object.convertTo(listview.model,"QObject")
maxcount = listview.count
myarray = []
for i in range(maxcount):
    myarray.append(model.get(i).text)

listview.model Returns a QVariant, which is basicly a container where you put everything in, and let python handle it.
I then casted the QVariant to QObject to see which class is behind the QVariant.
Turns out its not QmlLIstModel, its

https://doc.qt.io/qt-5/qidentityproxymodel.html#details

And now i have no clue to handle that class and do what i want

IntruderExcluder

So, it is C++ model, not QML. Then you can use data method to retrieve data. Something like this:

for i in range(maxcount):
    myarray.append(model.data(model.index(i, 0), %your_role_here%))

Psyduck0205

Hey Intruder thank you for your Reply.

That brought me close the solution i think.

The Problem that i have now is: How to deal with the QVariants that are now written in the Array.
I think i have to cast them first to extract the exact value i want.

Do you know what i have to do?

IntruderExcluder

Depends on what you want. If you have list of QVariant then you can compare them, at least in C++ this works. To compare with exact values you should of course get values from QVariant. For example cast them to integers with toInt() method.

Sahana

@Psyduck0205

I too facing similar issue. I need to access list of qvariant from squish?
Can you help me ?