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# -*- coding: utf-8 -*-
#
# File: portato/gui/windows/pkglist.py
# This file is part of the Portato-Project, a graphical portage-frontend.
#
# Copyright (C) 2006-2009 René 'Necoro' Neumann
# This is free software.  You may redistribute copies of it under the terms of
# the GNU General Public License version 2.
# There is NO WARRANTY, to the extent permitted by law.
#
# Written by René 'Necoro' Neumann <necoro@necoro.net>

from __future__ import absolute_import

import gtk
from .basic import AbstractDialog
from ..dialogs import unmask_dialog, blocked_dialog
from ...backend import system
from ...backend.exceptions import PackageNotFoundException, BlockedException
from ...helper import debug

class PkgListWindow (AbstractDialog):

    # need this, so it can be safely subclassed
    __file__ = __window__ = "PkgListWindow"

    def __init__ (self, title, parent, packages, queue, jump_to):
        AbstractDialog.__init__(self, parent)
        self.window.set_title(title)

        self.installBtn = self.tree.get_widget("installBtn")
        self.uninstallBtn = self.tree.get_widget("uninstallBtn")
        self.all_selected = False

        self.queue = queue
        self.jump = jump_to
        self.packages = packages

        self.build_list()

        self.window.show_all()

    def build_list (self):

        store = gtk.ListStore(bool, str)
        self.view = self.tree.get_widget("packageList")
        self.view.set_model(store)

        cell = gtk.CellRendererText()
        tCell = gtk.CellRendererToggle()
        tCell.set_property("activatable", True)
        tCell.connect("toggled", self.cb_check_toggled) # emulate the normal toggle behavior ...
        
        self.view.append_column(gtk.TreeViewColumn(_("Enabled"), tCell, active = 0))
        self.view.append_column(gtk.TreeViewColumn(_("Package"), cell, text = 1))

        for p in self.packages:
            store.append([False, p])

    def cb_set_size (self, *args):
        """
        This callback is called shortly before drawing.
        It calculates the optimal size of the window.
        The optimum is defined as: as large as possible w/o scrollbars
        """

        bb = self.tree.get_widget("updateBB")
        vals = (self.view.get_vadjustment().upper+bb.size_request()[1]+10, # max size of list + size of BB + constant
                self.parent.get_size()[1]) # size of the parent -> maximum size
        debug("Size values for the list and for the parent: %d / %d", *vals)
        val = int(min(vals))
        debug("Minimum value: %d", val)
        self.window.set_geometry_hints(self.window, min_height = val)

    def cb_select_all_clicked (self, btn):
        model = self.view.get_model()
        iter = model.get_iter_first()
        
        while iter:
            model.set_value(iter, 0, not self.all_selected)
            iter = model.iter_next(iter)

        return True

    def install_uninstall (self, type):
        model = self.view.get_model()
        iter = model.get_iter_first()
        if iter is None: return

        items = []
        while iter:
            if model.get_value(iter, 0):
                items.append(model.get_value(iter, 1))
            iter = model.iter_next(iter)
        
        if type == "install":
            for item in items:
                try:
                    try:
                        self.queue.append(item, "install", oneshot = True)
                    except PackageNotFoundException, e:
                        if unmask_dialog(e[0]) == gtk.RESPONSE_YES :
                            self.queue.append(item, "install", unmask = True, oneshot = True)

                except BlockedException, e:
                    blocked_dialog(e[0], e[1])
        else:
            for item in items:
                self.queue.append(item, "uninstall")

        self.close()
        return True

    def cb_install_clicked (self, btn):
        return self.install_uninstall("install")

    def cb_uninstall_clicked (self, btn):
        return self.install_uninstall("uninstall")

    def cb_package_selected (self, view):
        sel = view.get_selection()
        store, it = sel.get_selected()
        if it:
            package = system.new_package(store.get_value(it, 1))

            self.jump(package.get_cp(), package.get_version())

        return True

    def cb_check_toggled (self, cell, path):
        # for whatever reason we have to define normal toggle behavior explicitly
        store = self.view.get_model()
        store[path][0] = not store[path][0]
        return True

class UpdateWindow (PkgListWindow):
    def __init__ (self, *args, **kwargs):
        PkgListWindow.__init__(self, _("Updatable Packages"), *args, **kwargs)

class WorldListWindow (UpdateWindow):
    def __init__ (self, *args, **kwargs):
        PkgListWindow.__init__(self, _("World Packages"), *args, **kwargs)
        self.installBtn.hide()