Initial commit

Containers/Exercise_2.py

@@ -0,0 +1,75 @@
+#!/usr/bin/python3
+
+import sys
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk
+
+class AppWindow(Gtk.ApplicationWindow):
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.set_border_width(10)
+        self.set_size_request(250, 200)
+
+        notebook = Gtk.Notebook.new()
+        notebook.set_show_tabs(False)
+
+        for i in range(0, 4):
+            label = Gtk.Label.new("Tab")
+            button = Gtk.Button.new_with_mnemonic("_Next Tab")
+
+            expander = Gtk.Expander.new("You Are Viewing Tab %s" % str(i+1))
+            expander.set_expanded(True)
+            expander.add (button)
+
+            notebook.append_page(expander, label)
+            expander.set_border_width(10)
+
+            button.connect("clicked", self.on_notebook_button_clicked, notebook)
+
+        buttonbox = Gtk.ButtonBox.new(Gtk.Orientation.HORIZONTAL)
+        button_prev = Gtk.Button.new_with_label("Previous Page")
+        button_prev.connect("clicked", self.on_button_prev_clicked, notebook)
+        button_close = Gtk.Button.new_with_label("Close")
+        button_close.connect("clicked", self.on_button_close_clicked)
+        buttonbox.pack_end(button_prev, False, False, 5)
+        buttonbox.pack_end(button_close, False, False, 5)
+
+        paned = Gtk.Paned.new(Gtk.Orientation.VERTICAL)
+        paned.pack1(notebook, True, False)
+        paned.pack2(buttonbox, True, False)
+
+        self.add(paned)
+
+    def on_notebook_button_clicked(self, button, notebook):
+        nextpage = notebook.props.page + 1
+        if nextpage == 4:
+            nextpage = 0
+        notebook.set_current_page(nextpage)
+
+    def on_button_prev_clicked(self, button, notebook):
+        nextpage = notebook.props.page - 1
+        if nextpage == -1:
+            nextpage = 3
+        notebook.set_current_page(nextpage)
+
+    def on_button_close_clicked(self, button):
+        self.destroy()
+
+class Application(Gtk.Application):
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, application_id="org.example.myapp",
+                         **kwargs)
+        self.window = None
+
+    def do_activate(self):
+        if not self.window:
+            self.window = AppWindow(application=self, title="Notebook")
+        self.window.show_all()
+        self.window.present()
+
+if __name__ == "__main__":
+    app = Application()
+    app.run(sys.argv)