Is this possible to know what's the QListWidgetItem which contains a widget being clicked?

[cppStudent012]

Hi!

I made a QListWidget which contains custom QWidgets.
When I click on a widget of a QListWidgetItem, I'd like to know what's the QListWidgetItem which contains the clicked widget.

Here's the piece of code of the custom QWidget:

ClickableLabel.h

#ifndef CLICKABLELABEL_H
#define CLICKABLELABEL_H

#include <QLabel>
#include <QLineEdit>
#include <QWidget>
#include <Qt>

class Model;

class ClickableLabel : public QWidget {
    Q_OBJECT

    Model*model;
    QLabel*label;
    QLineEdit*lineEdit;
    QString prevText;
    bool pressed;

public:
    explicit ClickableLabel(QString text, QWidget* parent=nullptr, Qt::WindowFlags f = Qt::WindowFlags());
    ~ClickableLabel() override;
    void mousePressEvent(QMouseEvent* event) override;
    QLabel* GetLabel() const;
    QLineEdit* GetLineEdit() const;
    QSize sizeHint() const override;

signals:
    void clicked();

public slots:
    void ChangeLabelText();

};

#endif // CLICKABLELABEL_H

ClickableLabel.cpp

#include<clickablelabel.h>
#include<QDebug>
#include "model.h"

ClickableLabel::ClickableLabel(QString text, QWidget* parent, Qt::WindowFlags f) :
    QWidget(parent),
    model(new Model)
{
    pressed = false;

    label = new QLabel(text, this);
    label->setFont(QFont("Courier", 12));

    lineEdit = new QLineEdit(this);
    lineEdit->hide();

    prevText = label->text();

    connect(lineEdit,SIGNAL(returnPressed()),this,SLOT(ChangeLabelText()));
}

ClickableLabel::~ClickableLabel() {}

void ClickableLabel::mousePressEvent(QMouseEvent* event) {

    pressed = !pressed;

    if(pressed)
    {
        label->hide();
        lineEdit->show();
        lineEdit->setFocus();

        if((pos().x() == 0 && pos().y() == 0) || (pos().x() == 105 && pos().y() == 0))
        {
            lineEdit->setGeometry(0,0,100,18);
        }
        else
        {
            lineEdit->setGeometry(0,0,label->text().length()*10,18);
        }

        lineEdit->setPlaceholderText(label->text());
    }
    else
    {
        ChangeLabelText();
    }

    emit clicked();
}

QLabel* ClickableLabel::GetLabel() const { return label; }

QLineEdit* ClickableLabel::GetLineEdit() const { return lineEdit; }

QSize ClickableLabel::sizeHint() const {

    QSize size(label->text().length()*10,18);
    return size;
}

void ClickableLabel::ChangeLabelText() {

    if(pressed)
        pressed = !pressed;

    if(lineEdit->text() != "")
    {
        label->setText(lineEdit->text());
        prevText = lineEdit->text();

        model->ModifyHero(objectName().toLocal8Bit().constData(),
                          lineEdit->text().toLocal8Bit().constData());
    }
    else
        label->setText(prevText);

    label->show();
    lineEdit->hide();
}

In order to obtain the wanted result, I thought that I should connect this 2 signals in this way:

connect(ClickableLabel,SIGNAL(clicked()),QListWidget,SIGNAL(itemClicked(QListWidgetItem*)));

But of course, for many reasons, this can't be done.

That's why I am asking the if it's possible to know the QListWidgetItem which contains the clicked widget.
Can someone please tell me if what I thought is the right way to obtain what I want or if there's another way to do that?

Thank you in advance!

[dheerendra]

It is possible. Look at the example at GIT

[cppStudent012]

@dheerendra

Thank you very much for answering giving also a complete example!

I just finished to completely understand what your code does (had to surf the documentation a bit) and now I am gonna try to see if I can make it work.

For now, thanks again :)

[dheerendra]

Super. You can move the issue to SOLVED state.

[cppStudent012]

@dheerendra
Yeah as soon as I'll make everything work, I'll mark it as solved don't worry :)

[dheerendra]

No body is worried. It helps others. Nothing more than that.

[cppStudent012]

Here's how I made the whole thing "work" (I'm still having a few problems but the code here works perfectly) :

This is how to create a ClickableLabel and how to connect it to the slot

ClickableLabel* a = new ClickableLabel("value",parent);
a->setObjectName("aLabel"); //to let ClickableLabel class understand which instance was clicked
a->setProperty("myrow",itemCounter); //to instantiate labels with different ObjectName you need to make a counter
connect(a,SIGNAL(clicked()),this,SLOT(ElementClicked()));

This is the slot called when clicking any ClickableLabel (The code which was kindly provided by @dheerendra)

void MainWindow::ElementClicked() {

    ClickableLabel*clklbl = qobject_cast<ClickableLabel*>(sender());
    int row = clklbl->property("myrow").toInt();
    qList->setCurrentRow(row); //after experimenting a bit, it turned out that setCurrentRow() method is enough
    //model communication here
}

Thank you very much again @dheerendra!