/b-gtk/fix-viz

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

"""Revision history view.

"""

__copyright__ = "Copyright © 2005 Canonical Ltd."

__author__    = "Daniel Schierbeck <daniel.schierbeck@gmail.com>"

import sys

import string

import gtk

import gobject

import pango

import re

import treemodel

from linegraph import linegraph, same_branch

from graphcell import CellRendererGraph

from treemodel import TreeModel

from bzrlib.revision import NULL_REVISION

class TreeView(gtk.VBox):

    __gproperties__ = {

        'branch': (gobject.TYPE_PYOBJECT,

                   'Branch',

                   'The Bazaar branch being visualized',

                   gobject.PARAM_CONSTRUCT_ONLY | gobject.PARAM_WRITABLE),

        'revision': (gobject.TYPE_PYOBJECT,

                     'Revision',

                     'The currently selected revision',

                     gobject.PARAM_READWRITE),

        'revision-number': (gobject.TYPE_STRING,

                            'Revision number',

                            'The number of the selected revision',

                            '',

                            gobject.PARAM_READABLE),

        'children': (gobject.TYPE_PYOBJECT,

                     'Child revisions',

                     'Children of the currently selected revision',

                     gobject.PARAM_READABLE),

        'parents': (gobject.TYPE_PYOBJECT,

                    'Parent revisions',

                    'Parents to the currently selected revision',

                    gobject.PARAM_READABLE),

        'revno-column-visible': (gobject.TYPE_BOOLEAN,

                                 'Revision number',

                                 'Show revision number column',

                                 True,

                                 gobject.PARAM_READWRITE),

        'date-column-visible': (gobject.TYPE_BOOLEAN,

                                 'Date',

                                 'Show date column',

                                 False,

                                 gobject.PARAM_READWRITE),

        'compact': (gobject.TYPE_BOOLEAN,

                    'Compact view',

                    'Break ancestry lines to save space',

                    True,

                    gobject.PARAM_CONSTRUCT | gobject.PARAM_READWRITE)

    }

    __gsignals__ = {

        'revisions-loaded': (gobject.SIGNAL_RUN_FIRST, 

                             gobject.TYPE_NONE,

                             ()),

        'revision-selected': (gobject.SIGNAL_RUN_FIRST,

                              gobject.TYPE_NONE,

                              ()),

        'tag-added': (gobject.SIGNAL_RUN_FIRST,

                              gobject.TYPE_NONE,

                              (gobject.TYPE_STRING, gobject.TYPE_STRING))

    }

    def __init__(self, branch, start, maxnum, compact=True):

        """Create a new TreeView.

        :param branch: Branch object for branch to show.

        :param start: Revision id of top revision.

        :param maxnum: Maximum number of revisions to display, 

                       None for no limit.

        :param broken_line_length: After how much lines to break 

                                   branches.

        """

        gtk.VBox.__init__(self, spacing=0)

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

        self.connect('revisions-loaded', 

                lambda x: self.loading_msg_box.hide())

        self.scrolled_window = gtk.ScrolledWindow()

        self.scrolled_window.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)

        self.scrolled_window.set_shadow_type(gtk.SHADOW_IN)

        self.scrolled_window.show()

        self.pack_start(self.scrolled_window, expand=True, fill=True)

        self.scrolled_window.add(self.construct_treeview())

        self.iter = None

        self.branch = branch

        self.revision = None

        self.start = start

        self.maxnum = maxnum

        self.compact = compact

        gobject.idle_add(self.populate)

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

    def do_get_property(self, property):

        if property.name == 'revno-column-visible':

            return self.revno_column.get_visible()

        elif property.name == 'date-column-visible':

            return self.date_column.get_visible()

        elif property.name == 'compact':

            return self.compact

        elif property.name == 'branch':

            return self.branch

        elif property.name == 'revision':

            return self.model.get_value(self.iter, treemodel.REVISION)

        elif property.name == 'revision-number':

            return self.model.get_value(self.iter, treemodel.REVNO)

        elif property.name == 'children':

            return self.model.get_value(self.iter, treemodel.CHILDREN)

        elif property.name == 'parents':

            return self.model.get_value(self.iter, treemodel.PARENTS)

        else:

            raise AttributeError, 'unknown property %s' % property.name

    def do_set_property(self, property, value):

        if property.name == 'revno-column-visible':

            self.revno_column.set_visible(value)

        elif property.name == 'date-column-visible':

            self.date_column.set_visible(value)

        elif property.name == 'compact':

            self.compact = value

        elif property.name == 'branch':

            self.branch = value

        elif property.name == 'revision':

            self.set_revision_id(value.revision_id)

        else:

            raise AttributeError, 'unknown property %s' % property.name

    def get_revision(self):

        """Return revision id of currently selected revision, or None."""

        return self.get_property('revision')

    def set_revision(self, revision):

        self.set_property('revision', revision)

    def set_revision_id(self, revid):

        """Change the currently selected revision.

        :param revid: Revision id of revision to display.

        """

        self.treeview.set_cursor(self.index[revid])

        self.treeview.grab_focus()

    def get_children(self):

        """Return the children of the currently selected revision.

        :return: list of revision ids.

        """

        return self.get_property('children')

    def get_parents(self):

        """Return the parents of the currently selected revision.

        :return: list of revision ids.

        """

        return self.get_property('parents')

    def add_tag(self, tag, revid=None):

        if revid is None: revid = self.revision.revision_id

        try:

            self.branch.unlock()

            try:

                self.branch.lock_write()

                self.model.add_tag(tag, revid)

            finally:

                self.branch.unlock()

        finally:

            self.branch.lock_read()

        self.emit('tag-added', tag, revid)

    def refresh(self):

        self.loading_msg_box.show()

        gobject.idle_add(self.populate, self.get_revision())

    def update(self):

        try:

            self.branch.unlock()

            try:

                self.branch.lock_write()

                self.branch.update()

            finally:

                self.branch.unlock()

        finally:

            self.branch.lock_read()

    def back(self):

        """Signal handler for the Back button."""

        parents = self.get_parents()

        if not len(parents):

            return

        for parent_id in parents:

            parent_index = self.index[parent_id]

            parent = self.model[parent_index][treemodel.REVISION]

            if same_branch(self.get_revision(), parent):

                self.set_revision(parent)

                break

        else:

            self.set_revision_id(parents[0])

    def forward(self):

        """Signal handler for the Forward button."""

        children = self.get_children()

        if not len(children):

            return

        for child_id in children:

            child_index = self.index[child_id]

            child = self.model[child_index][treemodel.REVISION]

            if same_branch(child, self.get_revision()):

                self.set_revision(child)

                break

        else:

            self.set_revision_id(children[0])

    def populate(self, revision=None):

        """Fill the treeview with contents.

        :param start: Revision id of revision to start with.

        :param maxnum: Maximum number of revisions to display, or None 

                       for no limit.

        :param broken_line_length: After how much lines branches \

                       should be broken.

        """

        if self.compact:

            broken_line_length = 32

        else:

            broken_line_length = None

        self.branch.lock_read()

        (linegraphdata, index, columns_len) = linegraph(self.branch.repository,

                                                        self.start,

                                                        self.maxnum, 

                                                        broken_line_length)

        self.model = TreeModel(self.branch, linegraphdata)

        self.graph_cell.columns_len = columns_len

        width = self.graph_cell.get_size(self.treeview)[2]

        if width > 500:

            width = 500

        self.graph_column.set_fixed_width(width)

        self.graph_column.set_max_width(width)

        self.index = index

        self.treeview.set_model(self.model)

        if revision is None:

            self.treeview.set_cursor(0)

        else:

            self.set_revision(revision)

        self.emit('revisions-loaded')

        return False

    def show_diff(self, revid=None, parentid=None):

        """Open a new window to show a diff between the given revisions."""

        from bzrlib.plugins.gtk.diff import DiffWindow

        window = DiffWindow(parent=self)

        parents = self.get_parents()

        if revid is None:

            revid = self.get_revision().revision_id

            if parentid is None and len(parents) > 0:

                parentid = parents[0]

        if parentid is None:

            parentid = NULL_REVISION

        rev_tree    = self.branch.repository.revision_tree(revid)

        parent_tree = self.branch.repository.revision_tree(parentid)

        description = revid + " - " + self.branch.nick

        window.set_diff(description, rev_tree, parent_tree)

        window.show()

    def construct_treeview(self):

        self.treeview = gtk.TreeView()

        self.treeview.set_rules_hint(True)

        self.treeview.set_search_column(treemodel.REVNO)

        # Fix old PyGTK bug - by JAM

        set_tooltip = getattr(self.treeview, 'set_tooltip_column', None)

        if set_tooltip is not None:

            set_tooltip(treemodel.MESSAGE)

        self.treeview.connect("cursor-changed",

                self._on_selection_changed)

        self.treeview.connect("row-activated", 

                self._on_revision_activated)

        self.treeview.connect("button-release-event", 

                self._on_revision_selected)

        self.treeview.set_property('fixed-height-mode', True)

        self.treeview.show()

        cell = gtk.CellRendererText()

        cell.set_property("width-chars", 15)

        cell.set_property("ellipsize", pango.ELLIPSIZE_END)

        self.revno_column = gtk.TreeViewColumn("Revision No")

        self.revno_column.set_resizable(True)

        self.revno_column.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED)

        self.revno_column.set_fixed_width(cell.get_size(self.treeview)[2])

        self.revno_column.pack_start(cell, expand=True)

        self.revno_column.add_attribute(cell, "text", treemodel.REVNO)

        self.treeview.append_column(self.revno_column)

        self.graph_cell = CellRendererGraph()

        self.graph_column = gtk.TreeViewColumn()

        self.graph_column.set_resizable(True)

        self.graph_column.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED)

        self.graph_column.pack_start(self.graph_cell, expand=False)

        self.graph_column.add_attribute(self.graph_cell, "node", treemodel.NODE)

        self.graph_column.add_attribute(self.graph_cell, "tags", treemodel.TAGS)

        self.graph_column.add_attribute(self.graph_cell, "in-lines", treemodel.LAST_LINES)

        self.graph_column.add_attribute(self.graph_cell, "out-lines", treemodel.LINES)

        self.treeview.append_column(self.graph_column)

        cell = gtk.CellRendererText()

        cell.set_property("width-chars", 65)

        cell.set_property("ellipsize", pango.ELLIPSIZE_END)

        self.summary_column = gtk.TreeViewColumn("Summary")

        self.summary_column.set_resizable(True)

        self.summary_column.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED)

        self.summary_column.set_fixed_width(cell.get_size(self.treeview)[2])

        self.summary_column.pack_start(cell, expand=True)

        self.summary_column.add_attribute(cell, "markup", treemodel.SUMMARY)

        self.treeview.append_column(self.summary_column)

        cell = gtk.CellRendererText()

        cell.set_property("width-chars", 15)

        cell.set_property("ellipsize", pango.ELLIPSIZE_END)

        self.committer_column = gtk.TreeViewColumn("Committer")

        self.committer_column.set_resizable(True)

        self.committer_column.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED)

        self.committer_column.set_fixed_width(cell.get_size(self.treeview)[2])

        self.committer_column.pack_start(cell, expand=True)

        self.committer_column.add_attribute(cell, "text", treemodel.COMMITTER)

        self.treeview.append_column(self.committer_column)

        cell = gtk.CellRendererText()

        cell.set_property("width-chars", 20)

        cell.set_property("ellipsize", pango.ELLIPSIZE_END)

        self.date_column = gtk.TreeViewColumn("Date")

        self.date_column.set_visible(False)

        self.date_column.set_resizable(True)

        self.date_column.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED)

        self.date_column.set_fixed_width(cell.get_size(self.treeview)[2])

        self.date_column.pack_start(cell, expand=True)

        self.date_column.add_attribute(cell, "text", treemodel.TIMESTAMP)

        self.treeview.append_column(self.date_column)

        return self.treeview

    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 _on_selection_changed(self, treeview):

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

        (path, focus) = treeview.get_cursor()

        if path is not None:

            self.iter = self.model.get_iter(path)

            self.emit('revision-selected')

    def _on_revision_selected(self, widget, event):

        from bzrlib.plugins.gtk.revisionmenu import RevisionPopupMenu

        if event.button == 3:

            menu = RevisionPopupMenu(self.branch.repository, 

                [self.get_revision().revision_id],

                self.branch)

            menu.connect('tag-added', lambda w, t, r: self.add_tag(t, r))

            menu.popup(None, None, None, event.button, event.get_time())

    def _on_revision_activated(self, widget, path, col):

        # TODO: more than one parent

        """Callback for when a treeview row gets activated."""

        revision_id = self.model[path][treemodel.REVID]

        parents = self.model[path][treemodel.PARENTS]

        if len(parents) == 0:

            parent_id = None

        else:

            parent_id = parents[0]

        self.show_diff(revision_id, parent_id)

        self.treeview.grab_focus()