/b-gtk/fix-viz

To get this branch, use:
bzr branch http://gegoxaren.bato24.eu/bzr/b-gtk/fix-viz

« back to all changes in this revision

Viewing changes to viz/branchwin.py

  • Committer: Daniel Schierbeck
  • Date: 2008-04-07 20:34:51 UTC
  • mfrom: (450.6.13 bugs)
  • mto: (463.2.1 bug.78765)
  • mto: This revision was merged to the branch mainline in revision 462.
  • Revision ID: daniel.schierbeck@gmail.com-20080407203451-2i6el7jf9t0k9y64
Merged bug page improvements.

Show diffs side-by-side

added added

removed removed

Lines of Context:
viz/branchwin.py
12
12
import gtk
13
13
import gobject
14
14
import pango
15
 
import treemodel
16
15
 
17
16
from bzrlib.plugins.gtk.window import Window
18
 
from bzrlib.osutils import format_date
19
 
 
20
 
from linegraph import linegraph, same_branch
21
 
from graphcell import CellRendererGraph
22
 
from treemodel import TreeModel
23
 
from treeview  import TreeView
 
17
from bzrlib.plugins.gtk import icon_path
 
18
from bzrlib.plugins.gtk.tags import AddTagDialog
 
19
from bzrlib.plugins.gtk.preferences import PreferencesWindow
 
20
from bzrlib.plugins.gtk.branchview import TreeView, treemodel
 
21
from bzrlib.revision import Revision, NULL_REVISION
 
22
from bzrlib.config import BranchConfig
 
23
from bzrlib.config import GlobalConfig
24
24
 
25
25
class BranchWindow(Window):
26
26
    """Branch window.
29
29
    for a particular branch.
30
30
    """
31
31
 
32
 
    def __init__(self, branch, start, maxnum, parent=None):
 
32
    def __init__(self, branch, start_revs, maxnum, parent=None):
 
33
        """Create a new BranchWindow.
 
34
 
 
35
        :param branch: Branch object for branch to show.
 
36
        :param start_revs: Revision ids of top revisions.
 
37
        :param maxnum: Maximum number of revisions to display, 
 
38
                       None for no limit.
 
39
        """
 
40
 
33
41
        Window.__init__(self, parent=parent)
34
42
        self.set_border_width(0)
35
43
 
36
 
        self.branch = branch
37
 
        self.start  = start
38
 
        self.maxnum = maxnum
 
44
        self.branch      = branch
 
45
        self.start_revs  = start_revs
 
46
        self.maxnum      = maxnum
 
47
        self.config      = GlobalConfig()
 
48
 
 
49
        if self.config.get_user_option('viz-compact-view') == 'yes':
 
50
            self.compact_view = True
 
51
        else:
 
52
            self.compact_view = False
39
53
 
40
54
        self.set_title(branch.nick + " - revision history")
41
55
 
50
64
        icon = self.render_icon(gtk.STOCK_INDEX, gtk.ICON_SIZE_BUTTON)
51
65
        self.set_icon(icon)
52
66
 
 
67
        gtk.accel_map_add_entry("<viz>/Go/Next Revision", gtk.keysyms.Up, gtk.gdk.MOD1_MASK)
 
68
        gtk.accel_map_add_entry("<viz>/Go/Previous Revision", gtk.keysyms.Down, gtk.gdk.MOD1_MASK)
 
69
 
53
70
        self.accel_group = gtk.AccelGroup()
54
71
        self.add_accel_group(self.accel_group)
55
72
 
 
73
        gtk.Action.set_tool_item_type(gtk.MenuToolButton)
 
74
 
 
75
        self.prev_rev_action = gtk.Action("prev-rev", "_Previous Revision", "Go to the previous revision", gtk.STOCK_GO_DOWN)
 
76
        self.prev_rev_action.set_accel_path("<viz>/Go/Previous Revision")
 
77
        self.prev_rev_action.set_accel_group(self.accel_group)
 
78
        self.prev_rev_action.connect("activate", self._back_clicked_cb)
 
79
        self.prev_rev_action.connect_accelerator()
 
80
 
 
81
        self.next_rev_action = gtk.Action("next-rev", "_Next Revision", "Go to the next revision", gtk.STOCK_GO_UP)
 
82
        self.next_rev_action.set_accel_path("<viz>/Go/Next Revision")
 
83
        self.next_rev_action.set_accel_group(self.accel_group)
 
84
        self.next_rev_action.connect("activate", self._fwd_clicked_cb)
 
85
        self.next_rev_action.connect_accelerator()
 
86
 
56
87
        self.construct()
57
88
 
 
89
    def set_revision(self, revid):
 
90
        self.treeview.set_revision_id(revid)
 
91
 
58
92
    def construct(self):
59
93
        """Construct the window contents."""
60
94
        vbox = gtk.VBox(spacing=0)
61
95
        self.add(vbox)
62
96
 
 
97
        self.paned = gtk.VPaned()
 
98
        self.paned.pack1(self.construct_top(), resize=True, shrink=False)
 
99
        self.paned.pack2(self.construct_bottom(), resize=False, shrink=True)
 
100
        self.paned.show()
 
101
 
 
102
        vbox.pack_start(self.construct_menubar(), expand=False, fill=True)
63
103
        vbox.pack_start(self.construct_navigation(), expand=False, fill=True)
64
 
        vbox.pack_start(self.construct_loading_msg(), expand=False, fill=True)
65
104
        
66
 
        paned = gtk.VPaned()
67
 
        paned.pack1(self.construct_top(), resize=True, shrink=False)
68
 
        paned.pack2(self.construct_bottom(), resize=False, shrink=True)
69
 
        paned.show()
70
 
        vbox.pack_start(paned, expand=True, fill=True)
71
 
        vbox.set_focus_child(paned)
 
105
        vbox.pack_start(self.paned, expand=True, fill=True)
 
106
        vbox.set_focus_child(self.paned)
72
107
 
73
108
        vbox.show()
74
 
    
75
 
    def construct_loading_msg(self):
76
 
        image_loading = gtk.image_new_from_stock(gtk.STOCK_REFRESH,
77
 
                                                 gtk.ICON_SIZE_BUTTON)
78
 
        image_loading.show()
79
 
        
80
 
        label_loading = gtk.Label(_("Please wait, loading ancestral graph..."))
81
 
        label_loading.set_alignment(0.0, 0.5)        
82
 
        label_loading.show()
83
 
        
84
 
        self.loading_msg_box = gtk.HBox()
85
 
        self.loading_msg_box.set_spacing(5)
86
 
        self.loading_msg_box.set_border_width(5)        
87
 
        self.loading_msg_box.pack_start(image_loading, False, False)
88
 
        self.loading_msg_box.pack_start(label_loading, True, True)
89
 
        self.loading_msg_box.show()
90
 
        
91
 
        return self.loading_msg_box
 
109
 
 
110
    def construct_menubar(self):
 
111
        menubar = gtk.MenuBar()
 
112
 
 
113
        file_menu = gtk.Menu()
 
114
        file_menuitem = gtk.MenuItem("_File")
 
115
        file_menuitem.set_submenu(file_menu)
 
116
 
 
117
        file_menu_close = gtk.ImageMenuItem(gtk.STOCK_CLOSE, self.accel_group)
 
118
        file_menu_close.connect('activate', lambda x: self.destroy())
 
119
        
 
120
        file_menu_quit = gtk.ImageMenuItem(gtk.STOCK_QUIT, self.accel_group)
 
121
        file_menu_quit.connect('activate', lambda x: gtk.main_quit())
 
122
        
 
123
        if self._parent is not None:
 
124
            file_menu.add(file_menu_close)
 
125
        file_menu.add(file_menu_quit)
 
126
 
 
127
        edit_menu = gtk.Menu()
 
128
        edit_menuitem = gtk.MenuItem("_Edit")
 
129
        edit_menuitem.set_submenu(edit_menu)
 
130
 
 
131
        edit_menu_find = gtk.ImageMenuItem(gtk.STOCK_FIND)
 
132
 
 
133
        edit_menu_branchopts = gtk.MenuItem("Branch Settings")
 
134
        edit_menu_branchopts.connect('activate', lambda x: PreferencesWindow(self.branch.get_config()).show())
 
135
 
 
136
        edit_menu_globopts = gtk.MenuItem("Global Settings")
 
137
        edit_menu_globopts.connect('activate', lambda x: PreferencesWindow().show())
 
138
 
 
139
        edit_menu.add(edit_menu_find)
 
140
        edit_menu.add(edit_menu_branchopts)
 
141
        edit_menu.add(edit_menu_globopts)
 
142
 
 
143
        view_menu = gtk.Menu()
 
144
        view_menuitem = gtk.MenuItem("_View")
 
145
        view_menuitem.set_submenu(view_menu)
 
146
 
 
147
        view_menu_toolbar = gtk.CheckMenuItem("Show Toolbar")
 
148
        view_menu_toolbar.set_active(True)
 
149
        view_menu_toolbar.connect('toggled', self._toolbar_visibility_changed)
 
150
 
 
151
        view_menu_compact = gtk.CheckMenuItem("Show Compact Graph")
 
152
        view_menu_compact.set_active(self.compact_view)
 
153
        view_menu_compact.connect('activate', self._brokenlines_toggled_cb)
 
154
 
 
155
        view_menu.add(view_menu_toolbar)
 
156
        view_menu.add(view_menu_compact)
 
157
        view_menu.add(gtk.SeparatorMenuItem())
 
158
 
 
159
        self.mnu_show_revno_column = gtk.CheckMenuItem("Show Revision _Number Column")
 
160
        self.mnu_show_date_column = gtk.CheckMenuItem("Show _Date Column")
 
161
 
 
162
        # Revision numbers are pointless if there are multiple branches
 
163
        if len(self.start_revs) > 1:
 
164
            self.mnu_show_revno_column.set_sensitive(False)
 
165
            self.treeview.set_property('revno-column-visible', False)
 
166
 
 
167
        for (col, name) in [(self.mnu_show_revno_column, "revno"), 
 
168
                            (self.mnu_show_date_column, "date")]:
 
169
            col.set_active(self.treeview.get_property(name + "-column-visible"))
 
170
            col.connect('toggled', self._col_visibility_changed, name)
 
171
            view_menu.add(col)
 
172
 
 
173
        go_menu = gtk.Menu()
 
174
        go_menu.set_accel_group(self.accel_group)
 
175
        go_menuitem = gtk.MenuItem("_Go")
 
176
        go_menuitem.set_submenu(go_menu)
 
177
        
 
178
        go_menu_next = self.next_rev_action.create_menu_item()
 
179
        go_menu_prev = self.prev_rev_action.create_menu_item()
 
180
 
 
181
        tag_image = gtk.Image()
 
182
        tag_image.set_from_file(icon_path("tag-16.png"))
 
183
        self.go_menu_tags = gtk.ImageMenuItem("_Tags")
 
184
        self.go_menu_tags.set_image(tag_image)
 
185
        self._update_tags()
 
186
 
 
187
        go_menu.add(go_menu_next)
 
188
        go_menu.add(go_menu_prev)
 
189
        go_menu.add(gtk.SeparatorMenuItem())
 
190
        go_menu.add(self.go_menu_tags)
 
191
 
 
192
        revision_menu = gtk.Menu()
 
193
        revision_menuitem = gtk.MenuItem("_Revision")
 
194
        revision_menuitem.set_submenu(revision_menu)
 
195
 
 
196
        revision_menu_diff = gtk.MenuItem("View Changes")
 
197
        revision_menu_diff.connect('activate', 
 
198
                lambda w: self.treeview.show_diff())
 
199
 
 
200
        revision_menu_tag = gtk.MenuItem("Tag Revision")
 
201
        revision_menu_tag.connect('activate', self._tag_revision_cb)
 
202
 
 
203
        revision_menu.add(revision_menu_tag)
 
204
        revision_menu.add(revision_menu_diff)
 
205
 
 
206
        branch_menu = gtk.Menu()
 
207
        branch_menuitem = gtk.MenuItem("_Branch")
 
208
        branch_menuitem.set_submenu(branch_menu)
 
209
 
 
210
        branch_menu.add(gtk.MenuItem("Pu_ll Revisions"))
 
211
        branch_menu.add(gtk.MenuItem("Pu_sh Revisions"))
 
212
 
 
213
        help_menu = gtk.Menu()
 
214
        help_menuitem = gtk.MenuItem("_Help")
 
215
        help_menuitem.set_submenu(help_menu)
 
216
 
 
217
        help_about_menuitem = gtk.ImageMenuItem(gtk.STOCK_ABOUT, self.accel_group)
 
218
        help_about_menuitem.connect('activate', self._about_dialog_cb)
 
219
 
 
220
        help_menu.add(help_about_menuitem)
 
221
 
 
222
        menubar.add(file_menuitem)
 
223
        menubar.add(edit_menuitem)
 
224
        menubar.add(view_menuitem)
 
225
        menubar.add(go_menuitem)
 
226
        menubar.add(revision_menuitem)
 
227
        menubar.add(branch_menuitem)
 
228
        menubar.add(help_menuitem)
 
229
        menubar.show_all()
 
230
 
 
231
        return menubar
92
232
 
93
233
    def construct_top(self):
94
234
        """Construct the top-half of the window."""
95
 
        self.treeview = TreeView(self.branch, self.start, self.maxnum)
96
 
 
97
 
        self.treeview.connect("revision-selected",
 
235
        # FIXME: Make broken_line_length configurable
 
236
 
 
237
        self.treeview = TreeView(self.branch, self.start_revs, self.maxnum, self.compact_view)
 
238
 
 
239
        self.treeview.connect('revision-selected',
98
240
                self._treeselection_changed_cb)
99
 
 
100
 
        self.treeview.connect('revisions-loaded', 
101
 
                lambda x: self.loading_msg_box.hide())
102
 
 
 
241
        self.treeview.connect('revision-activated',
 
242
                self._tree_revision_activated)
 
243
 
 
244
        self.treeview.connect('tag-added', lambda w, t, r: self._update_tags())
 
245
 
 
246
        for col in ["revno", "date"]:
 
247
            option = self.config.get_user_option(col + '-column-visible')
 
248
            if option is not None:
 
249
                self.treeview.set_property(col + '-column-visible', option == 'True')
 
250
 
 
251
        self.treeview.set_property(col + '-column-visible', False)
103
252
        self.treeview.show()
104
253
 
105
 
        return self.treeview
 
254
        align = gtk.Alignment(0.0, 0.0, 1.0, 1.0)
 
255
        align.set_padding(5, 0, 0, 0)
 
256
        align.add(self.treeview)
 
257
        align.show()
 
258
 
 
259
        return align
106
260
 
107
261
    def construct_navigation(self):
108
262
        """Construct the navigation buttons."""
109
 
        frame = gtk.Frame()
110
 
        frame.set_shadow_type(gtk.SHADOW_OUT)
111
 
        frame.show()
112
 
        
113
 
        hbox = gtk.HBox(spacing=12)
114
 
        frame.add(hbox)
115
 
        hbox.show()
116
 
 
117
 
        self.back_button = gtk.Button(stock=gtk.STOCK_GO_BACK)
118
 
        self.back_button.set_relief(gtk.RELIEF_NONE)
119
 
        self.back_button.add_accelerator("clicked", self.accel_group, ord('['),
120
 
                                         0, 0)
121
 
        self.back_button.connect("clicked", self._back_clicked_cb)
122
 
        hbox.pack_start(self.back_button, expand=False, fill=True)
123
 
        self.back_button.show()
124
 
 
125
 
        self.fwd_button = gtk.Button(stock=gtk.STOCK_GO_FORWARD)
126
 
        self.fwd_button.set_relief(gtk.RELIEF_NONE)
127
 
        self.fwd_button.add_accelerator("clicked", self.accel_group, ord(']'),
128
 
                                        0, 0)
129
 
        self.fwd_button.connect("clicked", self._fwd_clicked_cb)
130
 
        hbox.pack_start(self.fwd_button, expand=False, fill=True)
131
 
        self.fwd_button.show()
132
 
 
133
 
        return frame
 
263
        self.toolbar = gtk.Toolbar()
 
264
        self.toolbar.set_style(gtk.TOOLBAR_BOTH_HORIZ)
 
265
 
 
266
        self.prev_button = self.prev_rev_action.create_tool_item()
 
267
        self.toolbar.insert(self.prev_button, -1)
 
268
 
 
269
        self.next_button = self.next_rev_action.create_tool_item()
 
270
        self.toolbar.insert(self.next_button, -1)
 
271
 
 
272
        self.toolbar.insert(gtk.SeparatorToolItem(), -1)
 
273
 
 
274
        refresh_button = gtk.ToolButton(gtk.STOCK_REFRESH)
 
275
        refresh_button.connect('clicked', self._refresh_clicked)
 
276
        self.toolbar.insert(refresh_button, -1)
 
277
 
 
278
        self.toolbar.show_all()
 
279
 
 
280
        return self.toolbar
134
281
 
135
282
    def construct_bottom(self):
136
283
        """Construct the bottom half of the window."""
137
 
        from bzrlib.plugins.gtk.logview import LogView
138
 
        self.logview = LogView(None, True, [], True)
 
284
        from bzrlib.plugins.gtk.revisionview import RevisionView
 
285
        self.revisionview = RevisionView(branch=self.branch)
139
286
        (width, height) = self.get_size()
140
 
        self.logview.set_size_request(width, int(height / 2.5))
141
 
        self.logview.show()
142
 
        self.logview.set_show_callback(self._show_clicked_cb)
143
 
        self.logview.set_go_callback(self._go_clicked_cb)
144
 
        return self.logview
145
 
    
 
287
        self.revisionview.set_size_request(width, int(height / 2.5))
 
288
        self.revisionview.show()
 
289
        self.revisionview.set_show_callback(self._show_clicked_cb)
 
290
        self.revisionview.connect('notify::revision', self._go_clicked_cb)
 
291
        self.treeview.connect('tag-added', lambda w, t, r: self.revisionview.update_tags())
 
292
        return self.revisionview
 
293
 
 
294
    def _tag_selected_cb(self, menuitem, revid):
 
295
        self.treeview.set_revision_id(revid)
 
296
 
146
297
    def _treeselection_changed_cb(self, selection, *args):
147
298
        """callback for when the treeview changes."""
148
299
        revision = self.treeview.get_revision()
150
301
        children = self.treeview.get_children()
151
302
 
152
303
        if revision is not None:
153
 
            self.back_button.set_sensitive(len(parents) > 0)
154
 
            self.fwd_button.set_sensitive(len(children) > 0)
155
 
            tags = []
156
 
            if self.branch.supports_tags():
157
 
                tagdict = self.branch.tags.get_reverse_tag_dict()
158
 
                if tagdict.has_key(revision.revision_id):
159
 
                    tags = tagdict[revision.revision_id]
160
 
            self.logview.set_revision(revision, tags, children)
 
304
            prev_menu = gtk.Menu()
 
305
            if len(parents) > 0:
 
306
                self.prev_rev_action.set_sensitive(True)
 
307
                for parent_id in parents:
 
308
                    parent = self.branch.repository.get_revision(parent_id)
 
309
                    try:
 
310
                        str = ' (' + parent.properties['branch-nick'] + ')'
 
311
                    except KeyError:
 
312
                        str = ""
 
313
 
 
314
                    item = gtk.MenuItem(parent.message.split("\n")[0] + str)
 
315
                    item.connect('activate', self._set_revision_cb, parent_id)
 
316
                    prev_menu.add(item)
 
317
                prev_menu.show_all()
 
318
            else:
 
319
                self.prev_rev_action.set_sensitive(False)
 
320
                prev_menu.hide()
 
321
 
 
322
            self.prev_button.set_menu(prev_menu)
 
323
 
 
324
            next_menu = gtk.Menu()
 
325
            if len(children) > 0:
 
326
                self.next_rev_action.set_sensitive(True)
 
327
                for child_id in children:
 
328
                    child = self.branch.repository.get_revision(child_id)
 
329
                    try:
 
330
                        str = ' (' + child.properties['branch-nick'] + ')'
 
331
                    except KeyError:
 
332
                        str = ""
 
333
 
 
334
                    item = gtk.MenuItem(child.message.split("\n")[0] + str)
 
335
                    item.connect('activate', self._set_revision_cb, child_id)
 
336
                    next_menu.add(item)
 
337
                next_menu.show_all()
 
338
            else:
 
339
                self.next_rev_action.set_sensitive(False)
 
340
                next_menu.hide()
 
341
 
 
342
            self.next_button.set_menu(next_menu)
 
343
 
 
344
            self.revisionview.set_revision(revision)
 
345
            self.revisionview.set_children(children)
 
346
    
 
347
    def _tree_revision_activated(self, widget, path, col):
 
348
        # TODO: more than one parent
 
349
        """Callback for when a treeview row gets activated."""
 
350
        revision = self.treeview.get_revision()
 
351
        parents  = self.treeview.get_parents()
 
352
 
 
353
        if len(parents) == 0:
 
354
            parent_id = None
 
355
        else:
 
356
            parent_id = parents[0]
 
357
 
 
358
        self.show_diff(revision.revision_id, parent_id)
 
359
        self.treeview.grab_focus()
 
360
    
161
361
 
162
362
    def _back_clicked_cb(self, *args):
163
363
        """Callback for when the back button is clicked."""
167
367
        """Callback for when the forward button is clicked."""
168
368
        self.treeview.forward()
169
369
 
170
 
    def _go_clicked_cb(self, revid):
 
370
    def _go_clicked_cb(self, w, p):
171
371
        """Callback for when the go button for a parent is clicked."""
172
 
        self.treeview.set_revision(revid)
 
372
        if self.revisionview.get_revision() is not None:
 
373
            self.treeview.set_revision(self.revisionview.get_revision())
173
374
 
174
375
    def _show_clicked_cb(self, revid, parentid):
175
376
        """Callback for when the show button for a parent is clicked."""
176
 
        self.treeview.show_diff(self.branch, revid, parentid)
 
377
        self.show_diff(revid, parentid)
177
378
        self.treeview.grab_focus()
178
379
 
 
380
    def _set_revision_cb(self, w, revision_id):
 
381
        self.treeview.set_revision_id(revision_id)
 
382
 
 
383
    def _brokenlines_toggled_cb(self, button):
 
384
        self.compact_view = button.get_active()
 
385
 
 
386
        if self.compact_view:
 
387
            option = 'yes'
 
388
        else:
 
389
            option = 'no'
 
390
 
 
391
        self.config.set_user_option('viz-compact-view', option)
 
392
        self.treeview.set_property('compact', self.compact_view)
 
393
        self.treeview.refresh()
 
394
 
 
395
    def _tag_revision_cb(self, w):
 
396
        try:
 
397
            self.treeview.set_sensitive(False)
 
398
            dialog = AddTagDialog(self.branch.repository, self.treeview.get_revision().revision_id, self.branch)
 
399
            response = dialog.run()
 
400
            if response != gtk.RESPONSE_NONE:
 
401
                dialog.hide()
 
402
            
 
403
                if response == gtk.RESPONSE_OK:
 
404
                    self.treeview.add_tag(dialog.tagname, dialog._revid)
 
405
                
 
406
                dialog.destroy()
 
407
 
 
408
        finally:
 
409
            self.treeview.set_sensitive(True)
 
410
 
 
411
    def _about_dialog_cb(self, w):
 
412
        from bzrlib.plugins.gtk.about import AboutDialog
 
413
 
 
414
        AboutDialog().run()
 
415
 
 
416
    def _col_visibility_changed(self, col, property):
 
417
        self.config.set_user_option(property + '-column-visible', col.get_active())
 
418
        self.treeview.set_property(property + '-column-visible', col.get_active())
 
419
 
 
420
    def _toolbar_visibility_changed(self, col):
 
421
        if col.get_active():
 
422
            self.toolbar.show() 
 
423
        else:
 
424
            self.toolbar.hide()
 
425
 
 
426
    def _show_about_cb(self, w):
 
427
        dialog = AboutDialog()
 
428
        dialog.connect('response', lambda d,r: d.destroy())
 
429
        dialog.run()
 
430
 
 
431
    def _refresh_clicked(self, w):
 
432
        self.treeview.refresh()
 
433
 
 
434
    def _update_tags(self):
 
435
        menu = gtk.Menu()
 
436
 
 
437
        if self.branch.supports_tags():
 
438
            tags = self.branch.tags.get_tag_dict().items()
 
439
            tags.sort()
 
440
            tags.reverse()
 
441
            for tag, revid in tags:
 
442
                tag_image = gtk.Image()
 
443
                tag_image.set_from_file(icon_path('tag-16.png'))
 
444
                tag_item = gtk.ImageMenuItem(tag.replace('_', '__'))
 
445
                tag_item.set_image(tag_image)
 
446
                tag_item.connect('activate', self._tag_selected_cb, revid)
 
447
                menu.add(tag_item)
 
448
            self.go_menu_tags.set_submenu(menu)
 
449
 
 
450
            self.go_menu_tags.set_sensitive(len(tags) != 0)
 
451
        else:
 
452
            self.go_menu_tags.set_sensitive(False)
 
453
 
 
454
        self.go_menu_tags.show_all()
 
455
 
 
456
    def show_diff(self, revid=None, parentid=None):
 
457
        """Open a new window to show a diff between the given revisions."""
 
458
        from bzrlib.plugins.gtk.diff import DiffWindow
 
459
        window = DiffWindow(parent=self)
 
460
 
 
461
        if parentid is None:
 
462
            parentid = NULL_REVISION
 
463
 
 
464
        rev_tree    = self.branch.repository.revision_tree(revid)
 
465
        parent_tree = self.branch.repository.revision_tree(parentid)
 
466
 
 
467
        description = revid + " - " + self.branch.nick
 
468
        window.set_diff(description, rev_tree, parent_tree)
 
469
        window.show()
 
470
 
 
471