/b-gtk/fix-viz

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

"""Revision history view.

"""

__copyright__ = "Copyright © 2005 Canonical Ltd."

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

from gi.repository import Gtk

from gi.repository import GObject

from gi.repository import Pango

from bzrlib import ui

from bzrlib.revision import NULL_REVISION

from bzrlib.plugins.gtk import lock

from bzrlib.plugins.gtk.ui import ProgressPanel

from bzrlib.plugins.gtk.branchview import treemodel

from bzrlib.plugins.gtk.branchview.linegraph import linegraph, same_branch

from bzrlib.plugins.gtk.branchview.graphcell import CellRendererGraph

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 column',

                                 'Show revision number column',

                                 True,

                                 GObject.PARAM_READWRITE),

        'graph-column-visible': (GObject.TYPE_BOOLEAN,

                                 'Graph column',

                                 'Show graph 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),

        'mainline-only': (GObject.TYPE_BOOLEAN,

                    'Mainline only',

                    'Only show the mainline history.',

                    False,

                    GObject.PARAM_CONSTRUCT | GObject.PARAM_READWRITE),

    }

    __gsignals__ = {

        'revision-selected': (GObject.SignalFlags.RUN_FIRST,

                              None,

                              ()),

        'revision-activated': (GObject.SignalFlags.RUN_FIRST,

                              None,

                              (GObject.TYPE_PYOBJECT, GObject.TYPE_PYOBJECT)),

        'tag-added': (GObject.SignalFlags.RUN_FIRST,

                              None,

                              (GObject.TYPE_STRING, GObject.TYPE_STRING)),

        'refreshed': (GObject.SignalFlags.RUN_FIRST, None,

                              ())

    }

    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.

        """

        super(TreeView, self).__init__(homogeneous=False, spacing=0)

        self.progress_widget = ProgressPanel()

        self.pack_start(self.progress_widget, False, True, 0)

        if getattr(ui.ui_factory, "set_progress_bar_widget", None) is not None:

            # We'are using our own ui, let's tell it to use our widget.

            ui.ui_factory.set_progress_bar_widget(self.progress_widget)

        self.scrolled_window = Gtk.ScrolledWindow()

        self.scrolled_window.set_policy(Gtk.PolicyType.AUTOMATIC,

                                        Gtk.PolicyType.AUTOMATIC)

        self.scrolled_window.set_shadow_type(Gtk.ShadowType.IN)

        self.scrolled_window.show()

        self.pack_start(self.scrolled_window, True, True, 0)

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

        self.path = None

        self.branch = branch

        self.revision = None

        self.index = {}

        self.start = start

        self.maxnum = maxnum

        self.compact = compact

        self.model = treemodel.BranchTreeModel(self.branch, [])

        GObject.idle_add(self.populate)

        self.connect("destroy", self._on_destroy)

    def _on_destroy(self, *ignored):

        self.branch.unlock()

        if getattr(ui.ui_factory, "set_progress_bar_widget", None) is not None:

            # We'are using our own ui, let's tell it to stop using our widget.

            ui.ui_factory.set_progress_bar_widget(None)

    def do_get_property(self, property):

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

            return self.revno_column.get_visible()

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

            return self.graph_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 == 'mainline-only':

            return self.mainline_only

        elif property.name == 'branch':

            return self.branch

        elif property.name == 'revision':

            if self.path is None:

                return None

            return self.model.get_value(self.model.get_iter(self.path),

                                        treemodel.REVISION)

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

            if self.path is None:

                return None

            return self.model.get_value(self.model.get_iter(self.path),

                                        treemodel.REVNO)

        elif property.name == 'children':

            if self.path is None:

                return None

            return self.model.get_value(self.model.get_iter(self.path),

                                        treemodel.CHILDREN)

        elif property.name == 'parents':

            if self.path is None:

                return None

            return self.model.get_value(self.model.get_iter(self.path),

                                        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 == 'graph-column-visible':

            self.graph_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 == 'mainline-only':

            self.mainline_only = 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 has_revision_id(self, revision_id):

        return (revision_id in self.index)

    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(

            Gtk.TreePath(path=self.index[revid]), None, False)

        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

        if lock.release(self.branch):

            try:

                lock.acquire(self.branch, lock.WRITE)

                self.model.add_tag(tag, revid)

            finally:

                lock.release(self.branch)

            lock.acquire(self.branch, lock.READ)

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

    def refresh(self):

        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 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 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 getattr(ui.ui_factory, "set_progress_bar_widget", None) is not None:

            # We'are using our own ui, let's tell it to use our widget.

            ui.ui_factory.set_progress_bar_widget(self.progress_widget)

        self.progress_bar = ui.ui_factory.nested_progress_bar()

        self.progress_bar.update("Loading ancestry graph", 0, 5)

        try:

            if self.compact:

                broken_line_length = 32

            else:

                broken_line_length = None

            show_graph = self.graph_column.get_visible()

            self.branch.lock_read()

            (linegraphdata, index, columns_len) = linegraph(

                self.branch.repository.get_graph(),

                self.start,

                self.maxnum, 

                broken_line_length,

                show_graph,

                self.mainline_only,

                self.progress_bar)

            self.model.set_line_graph_data(linegraphdata)

            self.graph_cell.columns_len = columns_len

            width = self.graph_cell.get_preferred_width(self.treeview)[1]

            if width > 500:

                width = 500

            elif width == 0:

                # The get_preferred_width() call got an insane value.

                width = 200

            self.graph_column.set_fixed_width(width)

            self.graph_column.set_max_width(width)

            self.index = index

            self.treeview.set_model(self.model)

            if not revision or revision == NULL_REVISION:

                self.treeview.set_cursor(Gtk.TreePath(path=0), None, False)

            else:

                self.set_revision(revision)

            self.emit('refreshed')

            return False

        finally:

            self.progress_bar.finished()

    def construct_treeview(self):

        self.treeview = Gtk.TreeView()

        self.treeview.set_rules_hint(True)

        # combined revno/summary interactive search

        #

        # the row in a treemodel is considered "matched" if a REVNO *starts*

        # from the key (that is the key is found in a REVNO at the offset 0)

        # or if a MESSAGE *contains* the key anywhere (that is, the key is

        # found case insensitively in a MESSAGE at any offset)

        def search_equal_func(model, column, key, iter):

            return (model.get_value(iter, treemodel.REVNO).find(key) != 0

                and model.get_value(iter, treemodel.MESSAGE).lower().find(key.lower()) == -1)

        self.treeview.set_search_equal_func(search_equal_func, None)

        self.treeview.set_enable_search(True)

        self.treeview.set_tooltip_column(treemodel.MESSAGE)

        self.treeview.set_headers_visible(True)

        self._prev_cursor_path = None

        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.EllipsizeMode.END)

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

        self.revno_column.set_resizable(True)

        self.revno_column.set_sizing(Gtk.TreeViewColumnSizing.FIXED)

        self.revno_column.set_fixed_width(

            cell.get_preferred_width(self.treeview)[1])

        self.revno_column.pack_start(cell, 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.TreeViewColumnSizing.FIXED)

        self.graph_column.pack_start(self.graph_cell, True)

        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.EllipsizeMode.END)

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

        self.summary_column.set_resizable(True)

        self.summary_column.set_expand(True)

        self.summary_column.set_sizing(Gtk.TreeViewColumnSizing.FIXED)

        self.summary_column.set_fixed_width(

            cell.get_preferred_width(self.treeview)[1])

        self.summary_column.pack_start(cell, 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.EllipsizeMode.END)

        self.authors_column = Gtk.TreeViewColumn("Author(s)")

        self.authors_column.set_resizable(False)

        self.authors_column.set_sizing(Gtk.TreeViewColumnSizing.FIXED)

        self.authors_column.set_fixed_width(200)

        self.authors_column.pack_start(cell, True)

        self.authors_column.add_attribute(cell, "text", treemodel.AUTHORS)

        self.treeview.append_column(self.authors_column)

        cell = Gtk.CellRendererText()

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

        cell.set_property("ellipsize", Pango.EllipsizeMode.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.TreeViewColumnSizing.FIXED)

        self.date_column.set_fixed_width(130)

        self.date_column.pack_start(cell, True)

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

        self.treeview.append_column(self.date_column)

        return self.treeview

    def _on_selection_changed(self, treeview):

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

        (path, focus) = treeview.get_cursor()

        if (path is not None) and (path != self._prev_cursor_path):

            self._prev_cursor_path = path # avoid emitting twice per click

            self.path = path

            self.emit('revision-selected')

    def _on_revision_selected(self, widget, event):

        from bzrlib.plugins.gtk.revisionmenu import RevisionMenu

        if event.button == 3:

            revs = []

            rev = self.get_revision()

            if rev is not None:

                revs.append(rev.revision_id)

            menu = RevisionMenu(self.branch.repository, revs, self.branch)

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

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

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

        self.emit('revision-activated', path, col)