Retrieve QTableWidget name when clicked/select cells in tablewdiget

[Piyush]

Hi,

How can i get the tablewidget name when i select any cell or click on any cell in a particulart tablewidget?

I tried using KeyPressEvent for this purpose, but not able to figure out which function do i need to use. Can anyone help me on this?

[mrjj]

Hi
What do you mean by "tablewidget name" ?
Do you mean the text on the item(s) you click on ?
There is signals for that.

If you can have one or more selected, there is also
http://doc.qt.io/qt-5/qtablewidget.html#selectedItems

[Piyush]

@mrjj So I have multiple tablewidgets in my GUI. I actually need to find the selected cell/item falls under which tablewidget? Is there any signal for that?

So whenever i select any item or cell in a tablewidget, it should give me the tablewidget's name.

[mrjj]

@Piyush
Hi
But how come there can be any doubts ??

Do you have hook all tablewidgets to same slot or how come its even an issue ?

You have to explain why you need this as normally its non issue :)
u want to hangle item slection from same slot for all tablewidgets or why
do u need name ?

[Piyush]

This post is deleted!

[Piyush]

@mrjj Well, the bigger picture is, I want to copy selected cells irrespective of the tablewidget I choose. Currently, I have a code by which I can copy selected cells for a particular table. But I want to make it dynamic in the sense that I do not have to provide tablewidget name manually. It should automatically understand which tablewidget has the selected cells.

def keyPressEvent(self, e):
    if (e.modifiers() & QtCore.Qt.ControlModifier):
        self.table = self.ui.tableWidget
        selected = self.table.selectedRanges()
        s = ''
        if e.key() == QtCore.Qt.Key_C: #copy
            if self.table.horizontalHeaderItem(0):
                s = '\t'+"\t".join([str(self.table.horizontalHeaderItem(i).text()) for i in xrange(selected[0].leftColumn(), selected[0].rightColumn()+1)])
                s = s + '\n'

            for r in xrange(selected[0].topRow(), selected[0].bottomRow()+1):
                if self.table.verticalHeaderItem(0):
                    s += self.table.verticalHeaderItem(r).text() + '\t'
                for c in xrange(selected[0].leftColumn(), selected[0].rightColumn()+1):
                    try:
                        s += str(self.table.item(r,c).text()) + "\t"
                    except AttributeError:
                        s += "\t"
                s = s[:-1] + "\n" #eliminate last '\t'
            self.clip.setText(s)

[mrjj]

Ok so its for generic handling.

If using signals
there is the sender() to know whom emitted the signal.

I assume QTableWidgetItem have a parent or something like that that would also tell you name.
(dont have docs here. if not, you can subclass and add it)
and there is QTableWidgetItem::setData() where you can simply stuff the info and read when needed.
( this should be pretty easy even if a bit wastefull since all items then have it :)

[Piyush]

@mrjj i tried using self.sender(), but it gives the mainwindow name.
How do i subclass it and get the name?

[jsulm]

@Piyush Where did you use sender()?

[Piyush]

@jsulm I added it in the keypressevent function shared above, which gives me mainwindow as the sender. This was my bad.

However, now i created a cellclicked signal for all the tables as below to get the name and it works. Now the issue is keypressevent function is not responding (not copying the selected values). I made self.table as a class global variable, in which i have both the functions

    def __init__(self):
        self.table = ''
        self.ui.table1.cellClicked.connect(self.get_obj_name)
        self.ui.table2.cellClicked.connect(self.get_obj_name)
        self.ui.table3.cellClicked.connect(self.get_obj_name)
        
        
    def get_obj_name(self, row, col):
        abc= self.sender()
        table = abc.objectName()
        self.table = "self.ui." + table

its a type issue i guess. The string i made is <type 'unicode'>, however, I should pass <class 'PyQt5.QtWidgets.QTableWidget'>

How do i correct this issue?

[Piyush]

Got it. just had to equate self.table = QTableWdiget().

Thanks guys, for the patience and help.