/b-gtk/fix-viz

# -*- coding: UTF-8 -*-

"""Branch window.

This module contains the code to manage the branch information window,

which contains both the revision graph and details panes.

"""

__copyright__ = "Copyright © 2005 Canonical Ltd."

__author__    = "Scott James Remnant <scott@ubuntu.com>"

import gtk

import gobject

import pango

import treemodel

from bzrlib.osutils import format_date

from linegraph import linegraph, same_branch

from graphcell import CellRendererGraph

from treemodel import TreeModel

from treeview  import TreeView

class BranchWindow(gtk.Window):

    """Branch window.

    This object represents and manages a single window containing information

    for a particular branch.

    """

    def __init__(self, parent=None):

        gtk.Window.__init__(self, gtk.WINDOW_TOPLEVEL)

        self.set_border_width(0)

        self.set_title("Revision history")

        self._parent = parent

        self.connect('key-press-event', self._on_key_pressed)

        self.connect("destroy", lambda w: self.branch.unlock())

        # Use three-quarters of the screen by default

        screen = self.get_screen()

        monitor = screen.get_monitor_geometry(0)

        width = int(monitor.width * 0.75)

        height = int(monitor.height * 0.75)

        self.set_default_size(width, height)

        # FIXME AndyFitz!

        icon = self.render_icon(gtk.STOCK_INDEX, gtk.ICON_SIZE_BUTTON)

        self.set_icon(icon)

        self.accel_group = gtk.AccelGroup()

        self.add_accel_group(self.accel_group)

        self.construct()

    def construct(self):

        """Construct the window contents."""

        vbox = gtk.VBox(spacing=0)

        self.add(vbox)

        vbox.pack_start(self.construct_navigation(), expand=False, fill=True)

        vbox.pack_start(self.construct_loading_msg(), expand=False, fill=True)

        paned = gtk.VPaned()

        paned.pack1(self.construct_top(), resize=True, shrink=False)

        paned.pack2(self.construct_bottom(), resize=False, shrink=True)

        paned.show()

        vbox.pack_start(paned, expand=True, fill=True)

        vbox.set_focus_child(paned)

        vbox.show()

    def construct_loading_msg(self):

        image_loading = gtk.image_new_from_stock(gtk.STOCK_REFRESH,

                                                 gtk.ICON_SIZE_BUTTON)

        image_loading.show()

        label_loading = gtk.Label(_("Please wait, loading ancestral graph..."))

        label_loading.set_alignment(0.0, 0.5)        

        label_loading.show()

        self.loading_msg_box = gtk.HBox()

        self.loading_msg_box.set_spacing(5)

        self.loading_msg_box.set_border_width(5)        

        self.loading_msg_box.pack_start(image_loading, False, False)

        self.loading_msg_box.pack_start(label_loading, True, True)

        self.loading_msg_box.show()

        return self.loading_msg_box

    def construct_top(self):

        """Construct the top-half of the window."""

        self.treeview = TreeView()

        self.treeview.connect("revision-selected",

                self._treeselection_changed_cb)

        self.treeview.connect('revisions-loaded', 

                lambda x: self.loading_msg_box.hide())

        self.treeview.show()

        return self.treeview

    def construct_navigation(self):

        """Construct the navigation buttons."""

        frame = gtk.Frame()

        frame.set_shadow_type(gtk.SHADOW_OUT)

        frame.show()

        hbox = gtk.HBox(spacing=12)

        frame.add(hbox)

        hbox.show()

        self.back_button = gtk.Button(stock=gtk.STOCK_GO_BACK)

        self.back_button.set_relief(gtk.RELIEF_NONE)

        self.back_button.add_accelerator("clicked", self.accel_group, ord('['),

                                         0, 0)

        self.back_button.connect("clicked", self._back_clicked_cb)

        hbox.pack_start(self.back_button, expand=False, fill=True)

        self.back_button.show()

        self.fwd_button = gtk.Button(stock=gtk.STOCK_GO_FORWARD)

        self.fwd_button.set_relief(gtk.RELIEF_NONE)

        self.fwd_button.add_accelerator("clicked", self.accel_group, ord(']'),

                                        0, 0)

        self.fwd_button.connect("clicked", self._fwd_clicked_cb)

        hbox.pack_start(self.fwd_button, expand=False, fill=True)

        self.fwd_button.show()

        return frame

    def construct_bottom(self):

        """Construct the bottom half of the window."""

        from bzrlib.plugins.gtk.logview import LogView

        self.logview = LogView(None, True, [], True)

        (width, height) = self.get_size()

        self.logview.set_size_request(width, int(height / 2.5))

        self.logview.show()

        self.logview.set_show_callback(self._show_clicked_cb)

        self.logview.set_go_callback(self._go_clicked_cb)

        return self.logview

    def set_branch(self, branch, start, maxnum):

        """Set the branch and start position for this window.

        Creates a new TreeModel and populates it with information about

        the new branch before updating the window title and model of the

        treeview itself.

        """

        self.branch = branch

        self.branch.lock_read()

        self.set_title(branch.nick + " - revision history")

        self.treeview.set_branch(branch, start, maxnum)

    def _on_key_pressed(self, widget, event):

        """ Key press event handler. """

        keyname = gtk.gdk.keyval_name(event.keyval)

        func = getattr(self, '_on_key_press_' + keyname, None)

        if func:

            return func(event)

    def _on_key_press_w(self, event):

        if event.state & gtk.gdk.CONTROL_MASK:

            self.destroy()

            if self._parent is None:

                gtk.main_quit()

    def _on_key_press_q(self, event):

        if event.state & gtk.gdk.CONTROL_MASK:

            gtk.main_quit()

    def _treeselection_changed_cb(self, selection, *args):

        """callback for when the treeview changes."""

        revision = self.treeview.get_revision()

        parents  = self.treeview.get_parents()

        children = self.treeview.get_children()

        if revision is not None:

            self.back_button.set_sensitive(len(parents) > 0)

            self.fwd_button.set_sensitive(len(children) > 0)

            tags = []

            if self.branch.supports_tags():

                tagdict = self.branch.tags.get_reverse_tag_dict()

                if tagdict.has_key(revision.revision_id):

                    tags = tagdict[revision.revision_id]

            self.logview.set_revision(revision, tags, children)

    def _back_clicked_cb(self, *args):

        """Callback for when the back button is clicked."""

        self.treeview.back()

    def _fwd_clicked_cb(self, *args):

        """Callback for when the forward button is clicked."""

        self.treeview.forward()

    def _go_clicked_cb(self, revid):

        """Callback for when the go button for a parent is clicked."""

        self.treeview.set_revision(revid)

    def _show_clicked_cb(self, revid, parentid):

        """Callback for when the show button for a parent is clicked."""

        self.treeview.show_diff(self.branch, revid, parentid)

        self.treeview.grab_focus()