Adapting QStringList to "two level" array

Anonymous_Banned275

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JonB

@AnneRanch
You have a (C) array of QStringLists in your list_array.

list_array[0] is the first QStringList, list_array[1] is the second, etc. Each QStringList has its own length/size/number of strings.
list_array[0].size() is the size/length of the first bunch (9).
list_array[1].size() is the size/length of the first bunch (4).

for (int i = 0; i < 10; i++)
    qDebug() << i << list_array[i].size();

Anonymous_Banned275

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Anonymous_Banned275

@JonB I am nor sure how to ask you more about passing parameters to connect. Hopefully you will get this post and respond,

Thanks

JonB

@AnneRanch
I'm not sure what your question is. You generally do not pass extra parameters to the connect() statement. The connect() just sets up a "channel" between a signal and a slot, and is of the form:

connect(signalObject, &SignalClass::signalMethod, slotObject, &SlotClass::slotMethod);

The signal can send extra parameters via its emit, but for example if you use a Qt signal they have already specified what parameters it will pass. It is true that one can specify a lambda for the slotMethod so you can pass some extra information from the place you set up the connect(), I would not call those "parameters to connect" but perhaps that is what you are referring to.

Anonymous_Banned275

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mpergand

@AnneRanch said in Adapting QStringList to "two level" array:

I need to work on a code which gets both main menu index and current submenu index...

It turns out that it is difficult to go up the menu hierarchy, unfortunatly.

Here an attempt :

QMenu menu("main menu");
menu.addAction("action1");
menu.addAction("action2");
QMenu* sub=menu.addMenu("sub menu");
sub->addAction("sub action1");
sub->addAction("sub action2");
menu.setAsDockMenu();

QObject::connect(&menu,&QMenu::triggered,&menu,[](QAction* action)
{
	QString path=action->text();

	QWidget* parent=action->parentWidget();
	path+=QString("(%1)").arg(parent->actions().indexOf(action));

	while(parent)
		{
		QMenu* menu=qobject_cast<QMenu*>(parent);
		QString title=menu->title();
		path+="->"+title;
		parent=parent->parentWidget();

		if(parent)
			{
			QMenu* menu=qobject_cast<QMenu*>(parent);
			int index=0;
			const QList<QAction*> actions=menu->actions();
			for(const QAction *act : actions)
				{
				if(act->text()==title)
					{
					path+=QString("(%1)").arg(index);
					break;
					}
				index++;
				}
			}
		}

	qDebug()<<path;
});

a click on action1 prints: "action1(0)->main menu"
a click on sub action2 prints: "sub action2(1)->sub menu(2)->main menu"
sub action2 is at index 1 in sub menu
sub menu is at index 2 in the main menu

Anonymous_Banned275

@mpergand I am trying to modify your code and having issues. Could use some help to resolve this.

Here is my code snippet :

// modify for sumMenu
//subMenu[index] = subMenu[index]
//        ->addMenu(list[index] + " # " + QString::number(index));

QObject::connect(&MainWindow_Bluetooth::subMenu,&QMenu::triggered,&MainWindow_Bluetooth::subMenu,[](QAction* action)
{// lambda
    QString path=action->text();

QWidget* parent=action->parentWidget();
path+=QString("(%1)").arg(parent->actions().indexOf(action));

while(parent)
    {
    QMenu* menu=qobject_cast<QMenu*>(parent);
    QString title=menu->title();

and here is the error :

/mnt/A_BT_DEC10/BT__PROGRAMS/A_JAN11/A_BT_LIBRARY/terminal_Bluetooth/mainwindow_Bluetooth_copy.cpp:42: error: C++ requires a type specifier for all declarations
mainwindow_Bluetooth_copy.cpp:42:10: error: C++ requires a type specifier for all declarations
QObject::connect(&MainWindow_Bluetooth::subMenu,&QMenu::triggered,&MainWindow_Bluetooth::subMenu,[](QAction* action)
         ^

It is not clear where "^" is pointing...

UPDATE
when "connect" is on A SINGLE line the "^" points to "action".

mpergand

@AnneRanch said in Adapting QStringList to "two level" array:

I am trying to modify your code

This code is someway a proof of concept, I don't see any real situation to use it :)

Anyway, if I understand you correctly (not quite easy), you seem to need to pass some parameters for each action of your menus.
One way to do this is to create some dynamic variables in the action itself.
(in fact here I simply use setData )

Here an example where I set the variables with the index of the item in its menu, but it can be any values you like/need.

// items counts
int mainMenuItems=4;
int subMenuItems=3;
int subsubMenuItems=2;
typedef QList<int> IntList;	// for convenient

QMenu* mainMenu=new QMenu("mainMenu");
for (int i=0; i<mainMenuItems; i++)
	{
	QAction* action=mainMenu->addAction(QString("item %1").arg(i));
	action->setData(QVariant::fromValue(IntList()<<i));
	}

QMenu* subMenu=mainMenu->addMenu("sub Menu");
for (int i=0; i<subMenuItems; i++)
	{
	QAction* action=subMenu->addAction(QString("sub item %1").arg(i));
	action->setData(QVariant::fromValue(QList<int>()<<i<<mainMenuItems));
	}

QMenu* subsubMenu=subMenu->addMenu("subsub Menu");
for (int i=0; i<subsubMenuItems; i++)
	{
	QAction* action=subsubMenu->addAction(QString("subsub item %1").arg(i));
	action->setData(QVariant::fromValue(QList<int>()<<i<<subMenuItems<<mainMenuItems));
	}

QObject::connect(mainMenu,&QMenu::triggered,mainMenu,[](QAction* action)
{
	IntList l=action->data().value<IntList>();
	qDebug()<<action->text()<<l;
});

logs:
"item 1" (1) // click on item1 in main menu
"sub item 2" (2, 4) // click on sub item2 (index 2) in submenu (index 4)
"subsub item 0" (0, 3, 4) // click in subsub item0 in subsubmenu (index 3) in submenu (index 4)

Anonymous_Banned275

@mpergand Thanks for the reply. I have taken the liberty to modify your code as far as using "connect" and lambda. It is doing a good job for my purpose.
There is an issue with using correct "connect" sender and trigger... and I am working on that.
( I did post a request for C++ code help here ... sorry OF does not member the post title....)

Anyway - you deserve credit for your code
appreciate it very much
,