How to delete all QTreeWidgetItems having the same text as selected QTreeWidgetItem?

[SGaist]

You don't, that signal just tells you that something has changed selection wise. Reaction to a click on an empty space is handled by the widget.

If you have the child deeper than the second level, then yes you would need to go back up to the top level item.

You're welcome !

[WDR_937]

@SGaist Is this the right way of doing it?

connect(ui->Usable_Resource_Tree, SIGNAL(ui->Usable_Resource_Tree->selectionModel()->selectionChanged()), this, SLOT(Disable_Button()));

void Disable_Button()
{
    ui->Delete_Button->setEnabled(false);
}

I haven't tested this. But I'm pretty sure something is definitely not right here. Please tell me whether my code is correct. Thanks.

[SGaist]

No it's not,

connect(ui->Usable_Resource_Tree->selectionModel(), SIGNAL(selectionChanged(QItemSelection,QItemSelection)), this, SLOT(updateDeleteButton(QItemSelection, QItemSelection)));

void updateDeleteButton(const QItemSelection &selected, const QItemSelection &deselected)
{
    ui->Delete_Button->setEnabled(selected.size() > 0);
}

[WDR_937]

@SGaist OK... So, I implemented what you posted here. It's working with selecting the items and is also being deselected when the item is removed. However, the clicking on empty space thing is still not implemented. How should this be implemented? Should I manually check for it or is it done automatically by the signal so that all I should do is just call it?

The deselected variable is not being used, so I set it to Q_UNUSED. Is it needed anywhere? Also, since I am calling this signal/slot, do I need to check for Item->isSelected() later on in my delete button slot? Why I ask this, is because the program crashed earlier before I even implemented Item->isSelected(). That is why I implemented it.

Finally, I am encountering two anomalous behaviors:-

1. The selectionChanged() is deselecting on removing the child items, but for parent items, it is by default selecting the next parent in the widget. How to disable this?

2. Sometimes, instead of graying out and flattening out on disabling, the delete button does not flatten out and becomes blue like it is when highlighted by the mouse. The text, however, grays out. It stays like this until it is enabled. This is only cosmetic as the button is still disabled. But it looks weird. Any way to fix this?

My apologies if I asked too many questions. I just want to solve this tree problem. Please bear with me. Thank you. :-)

[SGaist]

IIRC, you need to reimplement keyPressEvent and call clearSelection in it for that.

Q_UNUSED is the right tool, deselected is not needed in that case.

Since I don't know how you are currently performing the delete I can't comment on that one.

1. Before performing the delete, gather all informations, clear the selection, perform the deletion
2. Haven't seen that one happen

[WDR_937]

@SGaist said:

IIRC, you need to reimplement keyPressEvent and call clearSelection in it for that.

Do you mean QMouseEvent? Because I am clicking on empty space, not pressing any keys. Unless, the keyPressEvent is also used in this case, for which I don't know. Also, how would I know whether I am clicking on empty space or an item? Same selection.size > 0? Please clarify.

@SGaist said:

Since I don't know how you are currently performing the delete I can't comment on that one.

Here's what I'm doing,

QTreeWidgetItem *Resource = From_Tree->currentItem();

if(Resource != NULL)
	{
		if(Resource->isSelected())
		{
			From_Tree->takeTopLevelItem(From_Tree->indexOfTopLevelItem(Resource));
		}
	}

I remember why I implemented the isSelected(). When clicked, the button was removing the first item by default if nothing was selected. Since I am disabling the button completely when nothing is selected, I don't think I'll need this. Correct me if I'm wrong. Thanks.

[SGaist]

mousePressEvent indeed… Use itemAt to see if you have something under the mouse

You should rather user selectedItems

[WDR_937]

@SGaist said:

mousePressEvent indeed… Use itemAt to see if you have something under the mouse

Alright, thanks. I'll look into that. I'll see how it goes. If I hit any roadblock again, I'll ask here.

@SGaist said:

You should rather user selectedItems

Are you talking about the QTreeWidgetItem *Resource = From_Tree->currentItem() part of my code?

[SGaist]

No, selectedItems

[WDR_937]

@SGaist Yeah, I understood what you said. I was asking do you mean that part of my code?

[SGaist]

Ok, then yes, to replace currentItem

[WDR_937]

@SGaist Oh, OK... Then I'll implement that too and see how it goes. Thanks.