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Problem You have displayed a popup menu when user right-click on the tab of GtkNotebook in Part 1.
However, you want to know which tab the user has selected from the popup menu as shown below:
Solution Note: By right, the signal 'select-page' should allow us to know the new tab the uesr has selected. However, I tried it and it didn't work as expected. Guess it's not implemented yet. Anyway, just like many other things in php-gtk2, there are more than one way to achieve the same thing. In this case, we can use the signal 'event' of GtkWidget to know which tab the user has selected.
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| <?php
$window = new GtkWindow();
$window->set_size_request(400, 240);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());
// setup notebook
$notebook = new GtkNotebook();
$notebook->popup_enable();
$notebook->connect('switch-page', 'on_switch'); // note 1
$vbox->pack_start($notebook);
// add two tabs of GtkLabel
add_new_tab($notebook, new GtkLabel("Notebook 1\n\n
Display popup menu and know which tab the user has selected."), 'Label #1');
add_new_tab($notebook, new GtkLabel('Notebook 2'), 'Label #2');
// add a third tab of GtkTextView
$buffer = new GtkTextBuffer();
$view = new GtkTextView();
$view->set_buffer($buffer);
$view->set_wrap_mode(Gtk::WRAP_WORD);
add_new_tab($notebook, $view, 'Tab 3 - TextView');
$window->show_all();
Gtk::main();
// add new tab
function add_new_tab($notebook, $widget, $tab_label) {
$eventbox = new GtkEventBox();
$label = new GtkLabel($tab_label);
$eventbox->add($label);
$label->show();
$eventbox->connect('button-press-event', 'on_tab', $tab_label);
$notebook->append_page($widget, $eventbox);
$menu_label = new GtkLabel($tab_label);
$menu_label->set_alignment(0,0);
$notebook->set_menu_label($widget, $menu_label);
$widget->connect('event', 'on_event', $notebook); // note 2
global $tab_widget;
static $page=0;
$tab_widget[$page] = $widget; // note 3
++$page;
}
// function that is called when user click on tab
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Explanation We make use of the code in How to display a popup menu for GtkNotebook tab - Part 1? to setup a tabbed GtkNotebook with popup menu.
What's new here:
- The signal 'switch-page' allow us to know the "old" tab (the page that is being switched from).
- the signal 'event' allow us to know the new tab that the user has selected.
- Save a copy of the tab label widget.
- Get the current page. Note that this is an integer indicating the page number.
- Get the widget of the tab label. Note that this is a GtkEventBox as we have set up earlier.
- From the eventbox, we get the label with
$tab_label->child->get_text().
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