#!/usr/bin/env python
#
#   Middle Click Tab Close - Epiphany Extension
#   Copyright (C) 2006  Stefan Stuhr
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License along
#   with this program; if not, write to the Free Software Foundation, Inc.,
#   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.


import gtk
import epiphany

def attach_window(window):
	notebook = window.get_notebook()
	signal = notebook.connect("scroll-event", lambda x, y: True)
	window._mctc_notebook_scroll_sig = signal

def detach_window(window):
	if hasattr(window, "_mctc_notebook_scroll_sig"):
		notebook = window.get_notebook()
		notebook.disconnect(window._mctc_notebook_scroll_sig)
		delattr(window, "_mctc_notebook_scroll_sig")

def mctc_button_press_cb(widget, event):
	return (event.button == 2)

def mctc_motion_notify_cb(widget, event):
	if event.is_hint:
		x, y, state = event.window.get_pointer()
	else:
		state = event.state

	return (state & gtk.gdk.BUTTON2_MASK)

def mctc_button_release_cb(widget, event, window, tab):
	if event.button != 2:
		return

	width, height = widget.allocation.width, widget.allocation.height
	if not (event.x >= 0 and event.x < width and event.y >= 0 and event.y < height):
		return

	if tab != window.get_active_tab():
		tab._other_extensions_i_didnt_have_focus = True

	window.remove_tab(tab)

def attach_tab(window, tab):
	notebook = window.get_notebook()
	widget = notebook.get_tab_label(tab)

	signal = widget.connect("button-press-event", mctc_button_press_cb)
	tab._mctc_tab_button_press_sig = signal

	signal = widget.connect("motion-notify-event", mctc_motion_notify_cb)
	tab._mctc_tab_motion_notify_sig = signal

	signal = widget.connect("button-release-event", mctc_button_release_cb, window, tab)
	tab._mctc_tab_button_release_sig = signal

def detach_tab(window, tab):
	notebook = window.get_notebook()
	widget = notebook.get_tab_label(tab)

	if hasattr(tab, "_other_extensions_i_didnt_have_focus"):
		delattr(tab, "_other_extensions_i_didnt_have_focus")

	if not widget:
		return

	if hasattr(tab, "_mctc_tab_button_press_sig"):
		widget.disconnect(tab._mctc_tab_button_press_sig)
		delattr(tab, "_mctc_tab_button_press_sig")

	if hasattr(tab, "_mctc_tab_motion_notify_sig"):
		widget.disconnect(tab._mctc_tab_motion_notify_sig)
		delattr(tab, "_mctc_tab_motion_notify_sig")

	if hasattr(tab, "_mctc_tab_button_release_sig"):
		widget.disconnect(tab._mctc_tab_button_release_sig)
		delattr(tab, "_mctc_tab_button_release_sig")