/b-gtk/fix-viz

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  • Committer: Jelmer Vernooij
  • Date: 2006-05-19 16:56:46 UTC
  • mfrom: (0.1.25 gannotate)
  • Revision ID: jelmer@samba.org-20060519165646-0d867938fdbc9097
Merge in Dan Loda's gannotate plugin and put it in annotate/

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1
#!/usr/bin/python
 
2
# -*- coding: UTF-8 -*-
1
3
"""Difference window.
2
4
 
3
5
This module contains the code to manage the diff window which shows
4
6
the changes made between two revisions on a branch.
5
7
"""
6
8
 
7
 
__copyright__ = "Copyright 2005 Canonical Ltd."
 
9
__copyright__ = "Copyright © 2005 Canonical Ltd."
8
10
__author__    = "Scott James Remnant <scott@ubuntu.com>"
9
11
 
10
12
 
11
13
from cStringIO import StringIO
12
14
 
13
 
from gi.repository import Gtk
14
 
from gi.repository import Pango
15
 
import os
16
 
import re
17
 
import sys
18
 
import inspect
19
 
try:
20
 
    from xml.etree.ElementTree import Element, SubElement, tostring
21
 
except ImportError:
22
 
    from elementtree.ElementTree import Element, SubElement, tostring
 
15
import gtk
 
16
import pango
23
17
 
24
18
try:
25
 
    from gi.repository import GtkSource
 
19
    import gtksourceview
26
20
    have_gtksourceview = True
27
21
except ImportError:
28
22
    have_gtksourceview = False
29
 
try:
30
 
    from gi.repository import GConf
31
 
    have_gconf = True
32
 
except ImportError:
33
 
    have_gconf = False
34
23
 
35
 
from bzrlib import (
36
 
    errors,
37
 
    merge as _mod_merge,
38
 
    osutils,
39
 
    urlutils,
40
 
    workingtree,
41
 
)
 
24
from bzrlib.delta import compare_trees
42
25
from bzrlib.diff import show_diff_trees
43
 
from bzrlib.patches import parse_patches
44
 
from bzrlib.trace import warning
45
 
from bzrlib.plugins.gtk.dialog import (
46
 
    error_dialog,
47
 
    info_dialog,
48
 
    warning_dialog,
49
 
    )
50
 
from bzrlib.plugins.gtk.i18n import _i18n
51
 
from bzrlib.plugins.gtk.window import Window
52
 
 
53
 
 
54
 
def fallback_guess_language(slm, content_type):
55
 
    for lang_id in slm.get_language_ids():
56
 
        lang = slm.get_language(lang_id)
57
 
        if "text/x-patch" in lang.get_mime_types():
58
 
            return lang
59
 
    return None
60
 
 
61
 
 
62
 
class SelectCancelled(Exception):
63
 
 
64
 
    pass
65
 
 
66
 
 
67
 
class DiffFileView(Gtk.ScrolledWindow):
68
 
    """Window for displaying diffs from a diff file"""
69
 
 
70
 
    def __init__(self):
71
 
        Gtk.ScrolledWindow.__init__(self)
 
26
 
 
27
 
 
28
class DiffWindow(gtk.Window):
 
29
    """Diff window.
 
30
 
 
31
    This object represents and manages a single window containing the
 
32
    differences between two revisions on a branch.
 
33
    """
 
34
 
 
35
    def __init__(self, app=None):
 
36
        gtk.Window.__init__(self, gtk.WINDOW_TOPLEVEL)
 
37
        self.set_border_width(0)
 
38
        self.set_title("bzrk diff")
 
39
 
 
40
        self.app = app
 
41
 
 
42
        # Use two thirds of the screen by default
 
43
        screen = self.get_screen()
 
44
        monitor = screen.get_monitor_geometry(0)
 
45
        width = int(monitor.width * 0.66)
 
46
        height = int(monitor.height * 0.66)
 
47
        self.set_default_size(width, height)
 
48
 
72
49
        self.construct()
73
 
        self._diffs = {}
74
50
 
75
51
    def construct(self):
76
 
        self.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
77
 
        self.set_shadow_type(Gtk.ShadowType.IN)
78
 
 
79
 
        if have_gtksourceview:
80
 
            self.buffer = GtkSource.Buffer()
81
 
            lang_manager = GtkSource.LanguageManager.get_default()
82
 
            language = lang_manager.guess_language(None, "text/x-patch")
83
 
            if have_gconf:
84
 
                self.apply_gedit_colors(self.buffer)
85
 
            self.apply_colordiff_colors(self.buffer)
86
 
            self.buffer.set_language(language)
87
 
            self.buffer.set_highlight_syntax(True)
88
 
 
89
 
            self.sourceview = GtkSource.View(buffer=self.buffer)
90
 
        else:
91
 
            self.buffer = Gtk.TextBuffer()
92
 
            self.sourceview = Gtk.TextView(self.buffer)
93
 
 
94
 
        self.sourceview.set_editable(False)
95
 
        self.sourceview.modify_font(Pango.FontDescription("Monospace"))
96
 
        self.add(self.sourceview)
97
 
        self.sourceview.show()
98
 
 
99
 
    @staticmethod
100
 
    def apply_gedit_colors(buf):
101
 
        """Set style to that specified in gedit configuration.
102
 
 
103
 
        This method needs the gconf module.
104
 
 
105
 
        :param buf: a GtkSource.Buffer object.
106
 
        """
107
 
        GEDIT_SCHEME_PATH = '/apps/gedit-2/preferences/editor/colors/scheme'
108
 
        GEDIT_USER_STYLES_PATH = os.path.expanduser('~/.gnome2/gedit/styles')
109
 
 
110
 
        client = GConf.Client.get_default()
111
 
        style_scheme_name = client.get_string(GEDIT_SCHEME_PATH)
112
 
        if style_scheme_name is not None:
113
 
            style_scheme_mgr = GtkSource.StyleSchemeManager()
114
 
            style_scheme_mgr.append_search_path(GEDIT_USER_STYLES_PATH)
115
 
            
116
 
            style_scheme = style_scheme_mgr.get_scheme(style_scheme_name)
117
 
            
118
 
            if style_scheme is not None:
119
 
                buf.set_style_scheme(style_scheme)
120
 
 
121
 
    @classmethod
122
 
    def apply_colordiff_colors(klass, buf):
123
 
        """Set style colors for lang using the colordiff configuration file.
124
 
 
125
 
        Both ~/.colordiffrc and ~/.colordiffrc.bzr-gtk are read.
126
 
 
127
 
        :param buf: a "Diff" GtkSource.Buffer object.
128
 
        """
129
 
        scheme_manager = GtkSource.StyleSchemeManager()
130
 
        style_scheme = scheme_manager.get_scheme('colordiff')
131
 
        
132
 
        # if style scheme not found, we'll generate it from colordiffrc
133
 
        # TODO: reload if colordiffrc has changed.
134
 
        if style_scheme is None:
135
 
            colors = {}
136
 
 
137
 
            for f in ('~/.colordiffrc', '~/.colordiffrc.bzr-gtk'):
138
 
                f = os.path.expanduser(f)
139
 
                if os.path.exists(f):
140
 
                    try:
141
 
                        f = file(f)
142
 
                    except IOError, e:
143
 
                        warning('could not open file %s: %s' % (f, str(e)))
144
 
                    else:
145
 
                        colors.update(klass.parse_colordiffrc(f))
146
 
                        f.close()
147
 
 
148
 
            if not colors:
149
 
                # ~/.colordiffrc does not exist
150
 
                return
151
 
            
152
 
            mapping = {
153
 
                # map GtkSourceView2 scheme styles to colordiff names
154
 
                # since GSV is richer, accept new names for extra bits,
155
 
                # defaulting to old names if they're not present
156
 
                'diff:added-line': ['newtext'],
157
 
                'diff:removed-line': ['oldtext'],
158
 
                'diff:location': ['location', 'diffstuff'],
159
 
                'diff:file': ['file', 'diffstuff'],
160
 
                'diff:special-case': ['specialcase', 'diffstuff'],
161
 
            }
162
 
            
163
 
            converted_colors = {}
164
 
            for name, values in mapping.items():
165
 
                color = None
166
 
                for value in values:
167
 
                    color = colors.get(value, None)
168
 
                    if color is not None:
169
 
                        break
170
 
                if color is None:
171
 
                    continue
172
 
                converted_colors[name] = color
173
 
            
174
 
            # some xml magic to produce needed style scheme description
175
 
            e_style_scheme = Element('style-scheme')
176
 
            e_style_scheme.set('id', 'colordiff')
177
 
            e_style_scheme.set('_name', 'ColorDiff')
178
 
            e_style_scheme.set('version', '1.0')
179
 
            for name, color in converted_colors.items():
180
 
                style = SubElement(e_style_scheme, 'style')
181
 
                style.set('name', name)
182
 
                style.set('foreground', '#%s' % color)
183
 
            
184
 
            scheme_xml = tostring(e_style_scheme, 'UTF-8')
185
 
            if not os.path.exists(os.path.expanduser('~/.local/share/gtksourceview-2.0/styles')):
186
 
                os.makedirs(os.path.expanduser('~/.local/share/gtksourceview-2.0/styles'))
187
 
            file(os.path.expanduser('~/.local/share/gtksourceview-2.0/styles/colordiff.xml'), 'w').write(scheme_xml)
188
 
            
189
 
            scheme_manager.force_rescan()
190
 
            style_scheme = scheme_manager.get_scheme('colordiff')
191
 
        
192
 
        buf.set_style_scheme(style_scheme)
193
 
 
194
 
    @staticmethod
195
 
    def parse_colordiffrc(fileobj):
196
 
        """Parse fileobj as a colordiff configuration file.
197
 
 
198
 
        :return: A dict with the key -> value pairs.
199
 
        """
200
 
        colors = {}
201
 
        for line in fileobj:
202
 
            if re.match(r'^\s*#', line):
203
 
                continue
204
 
            if '=' not in line:
205
 
                continue
206
 
            key, val = line.split('=', 1)
207
 
            colors[key.strip()] = val.strip()
208
 
        return colors
209
 
 
210
 
    def set_trees(self, rev_tree, parent_tree):
211
 
        self.rev_tree = rev_tree
212
 
        self.parent_tree = parent_tree
213
 
#        self._build_delta()
214
 
 
215
 
#    def _build_delta(self):
216
 
#        self.parent_tree.lock_read()
217
 
#        self.rev_tree.lock_read()
218
 
#        try:
219
 
#            self.delta = iter_changes_to_status(self.parent_tree, self.rev_tree)
220
 
#            self.path_to_status = {}
221
 
#            self.path_to_diff = {}
222
 
#            source_inv = self.parent_tree.inventory
223
 
#            target_inv = self.rev_tree.inventory
224
 
#            for (file_id, real_path, change_type, display_path) in self.delta:
225
 
#                self.path_to_status[real_path] = u'=== %s %s' % (change_type, display_path)
226
 
#                if change_type in ('modified', 'renamed and modified'):
227
 
#                    source_ie = source_inv[file_id]
228
 
#                    target_ie = target_inv[file_id]
229
 
#                    sio = StringIO()
230
 
#                    source_ie.diff(internal_diff, *old path, *old_tree,
231
 
#                                   *new_path, target_ie, self.rev_tree,
232
 
#                                   sio)
233
 
#                    self.path_to_diff[real_path] = 
234
 
#
235
 
#        finally:
236
 
#            self.rev_tree.unlock()
237
 
#            self.parent_tree.unlock()
238
 
 
239
 
    def show_diff(self, specific_files):
240
 
        sections = []
241
 
        if specific_files is None:
242
 
            self.buffer.set_text(self._diffs[None])
243
 
        else:
244
 
            for specific_file in specific_files:
245
 
                sections.append(self._diffs[specific_file])
246
 
            self.buffer.set_text(''.join(sections))
247
 
 
248
 
 
249
 
class DiffView(DiffFileView):
250
 
    """This is the soft and chewy filling for a DiffWindow."""
251
 
 
252
 
    def __init__(self):
253
 
        DiffFileView.__init__(self)
254
 
        self.rev_tree = None
255
 
        self.parent_tree = None
256
 
 
257
 
    def show_diff(self, specific_files):
258
 
        """Show the diff for the specified files"""
259
 
        s = StringIO()
260
 
        show_diff_trees(self.parent_tree, self.rev_tree, s, specific_files,
261
 
                        old_label='', new_label='',
262
 
                        # path_encoding=sys.getdefaultencoding()
263
 
                        # The default is utf-8, but we interpret the file
264
 
                        # contents as getdefaultencoding(), so we should
265
 
                        # probably try to make the paths in the same encoding.
266
 
                        )
267
 
        # str.decode(encoding, 'replace') doesn't do anything. Because if a
268
 
        # character is not valid in 'encoding' there is nothing to replace, the
269
 
        # 'replace' is for 'str.encode()'
270
 
        try:
271
 
            decoded = s.getvalue().decode(sys.getdefaultencoding())
272
 
        except UnicodeDecodeError:
273
 
            try:
274
 
                decoded = s.getvalue().decode('UTF-8')
275
 
            except UnicodeDecodeError:
276
 
                decoded = s.getvalue().decode('iso-8859-1')
277
 
                # This always works, because every byte has a valid
278
 
                # mapping from iso-8859-1 to Unicode
279
 
        # TextBuffer must contain pure UTF-8 data
280
 
        self.buffer.set_text(decoded.encode('UTF-8'))
281
 
 
282
 
 
283
 
class DiffWidget(Gtk.HPaned):
284
 
    """Diff widget
285
 
 
286
 
    """
287
 
    def __init__(self):
288
 
        super(DiffWidget, self).__init__()
289
 
 
290
 
        # The file hierarchy: a scrollable treeview
291
 
        scrollwin = Gtk.ScrolledWindow()
292
 
        scrollwin.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC)
293
 
        scrollwin.set_shadow_type(Gtk.ShadowType.IN)
294
 
        self.pack1(scrollwin)
 
52
        """Construct the window contents."""
 
53
        hbox = gtk.HBox(spacing=6)
 
54
        hbox.set_border_width(12)
 
55
        self.add(hbox)
 
56
        hbox.show()
 
57
 
 
58
        scrollwin = gtk.ScrolledWindow()
 
59
        scrollwin.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)
 
60
        scrollwin.set_shadow_type(gtk.SHADOW_IN)
 
61
        hbox.pack_start(scrollwin, expand=False, fill=True)
295
62
        scrollwin.show()
296
 
        
297
 
        self.model = Gtk.TreeStore(str, str)
298
 
        self.treeview = Gtk.TreeView(model=self.model)
 
63
 
 
64
        self.model = gtk.TreeStore(str, str)
 
65
        self.treeview = gtk.TreeView(self.model)
299
66
        self.treeview.set_headers_visible(False)
300
67
        self.treeview.set_search_column(1)
301
68
        self.treeview.connect("cursor-changed", self._treeview_cursor_cb)
302
69
        scrollwin.add(self.treeview)
303
70
        self.treeview.show()
304
71
 
305
 
        cell = Gtk.CellRendererText()
 
72
        cell = gtk.CellRendererText()
306
73
        cell.set_property("width-chars", 20)
307
 
        column = Gtk.TreeViewColumn()
308
 
        column.pack_start(cell, True)
 
74
        column = gtk.TreeViewColumn()
 
75
        column.pack_start(cell, expand=True)
309
76
        column.add_attribute(cell, "text", 0)
310
77
        self.treeview.append_column(column)
311
78
 
312
 
    def set_diff_text(self, lines):
313
 
        """Set the current diff from a list of lines
314
 
 
315
 
        :param lines: The diff to show, in unified diff format
316
 
        """
317
 
        # The diffs of the  selected file: a scrollable source or
318
 
        # text view
319
 
 
320
 
    def set_diff_text_sections(self, sections):
321
 
        if getattr(self, 'diff_view', None) is None:
322
 
            self.diff_view = DiffFileView()
323
 
            self.pack2(self.diff_view)
324
 
        self.diff_view.show()
325
 
        for oldname, newname, patch in sections:
326
 
            self.diff_view._diffs[newname] = str(patch)
327
 
            if newname is None:
328
 
                newname = ''
329
 
            self.model.append(None, [oldname, newname])
330
 
        self.diff_view.show_diff(None)
331
 
 
332
 
    def set_diff(self, rev_tree, parent_tree):
 
79
 
 
80
        scrollwin = gtk.ScrolledWindow()
 
81
        scrollwin.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
 
82
        scrollwin.set_shadow_type(gtk.SHADOW_IN)
 
83
        hbox.pack_start(scrollwin, expand=True, fill=True)
 
84
        scrollwin.show()
 
85
 
 
86
        if have_gtksourceview:
 
87
            self.buffer = gtksourceview.SourceBuffer()
 
88
            slm = gtksourceview.SourceLanguagesManager()
 
89
            gsl = slm.get_language_from_mime_type("text/x-patch")
 
90
            self.buffer.set_language(gsl)
 
91
            self.buffer.set_highlight(True)
 
92
 
 
93
            sourceview = gtksourceview.SourceView(self.buffer)
 
94
        else:
 
95
            self.buffer = gtk.TextBuffer()
 
96
            sourceview = gtk.TextView(self.buffer)
 
97
 
 
98
        sourceview.set_editable(False)
 
99
        sourceview.modify_font(pango.FontDescription("Monospace"))
 
100
        scrollwin.add(sourceview)
 
101
        sourceview.show()
 
102
 
 
103
    def set_diff(self, branch, revid, parentid):
333
104
        """Set the differences showed by this window.
334
105
 
335
106
        Compares the two trees and populates the window with the
336
107
        differences.
337
108
        """
338
 
        if getattr(self, 'diff_view', None) is None:
339
 
            self.diff_view = DiffView()
340
 
            self.pack2(self.diff_view)
341
 
        self.diff_view.show()
342
 
        self.diff_view.set_trees(rev_tree, parent_tree)
343
 
        self.rev_tree = rev_tree
344
 
        self.parent_tree = parent_tree
 
109
        self.rev_tree = branch.repository.revision_tree(revid)
 
110
        self.parent_tree = branch.repository.revision_tree(parentid)
345
111
 
346
112
        self.model.clear()
347
 
        delta = self.rev_tree.changes_from(self.parent_tree)
 
113
        delta = compare_trees(self.parent_tree, self.rev_tree)
348
114
 
349
115
        self.model.append(None, [ "Complete Diff", "" ])
350
116
 
362
128
            titer = self.model.append(None, [ "Renamed", None ])
363
129
            for oldpath, newpath, id, kind, text_modified, meta_modified \
364
130
                    in delta.renamed:
365
 
                self.model.append(titer, [ oldpath, newpath ])
 
131
                self.model.append(titer, [ oldpath, oldpath ])
366
132
 
367
133
        if len(delta.modified):
368
134
            titer = self.model.append(None, [ "Modified", None ])
370
136
                self.model.append(titer, [ path, path ])
371
137
 
372
138
        self.treeview.expand_all()
373
 
        self.diff_view.show_diff(None)
374
 
 
375
 
    def set_file(self, file_path):
376
 
        """Select the current file to display"""
377
 
        tv_path = None
378
 
        for data in self.model:
379
 
            for child in data.iterchildren():
380
 
                if child[0] == file_path or child[1] == file_path:
381
 
                    tv_path = child.path
382
 
                    break
383
 
        if tv_path is None:
384
 
            raise errors.NoSuchFile(file_path)
385
 
        self.treeview.set_cursor(tv_path)
386
 
        self.treeview.scroll_to_cell(tv_path)
 
139
        self.set_title(revid + " - " + branch.nick + " - bzrk diff")
387
140
 
388
141
    def _treeview_cursor_cb(self, *args):
389
142
        """Callback for when the treeview cursor changes."""
392
145
        if specific_files == [ None ]:
393
146
            return
394
147
        elif specific_files == [ "" ]:
395
 
            specific_files = None
396
 
        
397
 
        self.diff_view.show_diff(specific_files)
398
 
    
399
 
    def _on_wraplines_toggled(self, widget=None, wrap=False):
400
 
        """Callback for when the wrap lines checkbutton is toggled"""
401
 
        if wrap or widget.get_active():
402
 
            self.diff_view.sourceview.set_wrap_mode(Gtk.WrapMode.WORD)
403
 
        else:
404
 
            self.diff_view.sourceview.set_wrap_mode(Gtk.WrapMode.NONE)
405
 
 
406
 
class DiffWindow(Window):
407
 
    """Diff window.
408
 
 
409
 
    This object represents and manages a single window containing the
410
 
    differences between two revisions on a branch.
411
 
    """
412
 
 
413
 
    def __init__(self, parent=None, operations=None):
414
 
        Window.__init__(self, parent)
415
 
        self.set_border_width(0)
416
 
        self.set_title("bzrk diff")
417
 
 
418
 
        # Use two thirds of the screen by default
419
 
        screen = self.get_screen()
420
 
        monitor = screen.get_monitor_geometry(0)
421
 
        width = int(monitor.width * 0.66)
422
 
        height = int(monitor.height * 0.66)
423
 
        self.set_default_size(width, height)
424
 
        self.construct(operations)
425
 
 
426
 
    def construct(self, operations):
427
 
        """Construct the window contents."""
428
 
        self.vbox = Gtk.VBox()
429
 
        self.add(self.vbox)
430
 
        self.vbox.show()
431
 
        self.diff = DiffWidget()
432
 
        self.vbox.pack_end(self.diff, True, True, 0)
433
 
        self.diff.show_all()
434
 
        # Build after DiffWidget to connect signals
435
 
        menubar = self._get_menu_bar()
436
 
        self.vbox.pack_start(menubar, False, False, 0)
437
 
        hbox = self._get_button_bar(operations)
438
 
        if hbox is not None:
439
 
            self.vbox.pack_start(hbox, False, True, 0)
440
 
        
441
 
    
442
 
    def _get_menu_bar(self):
443
 
        menubar = Gtk.MenuBar()
444
 
        # View menu
445
 
        mb_view = Gtk.MenuItem(label=_i18n("_View"))
446
 
        mb_view_menu = Gtk.Menu()
447
 
        mb_view_wrapsource = Gtk.CheckMenuItem(
448
 
            label=_i18n("Wrap _Long Lines"))
449
 
        mb_view_wrapsource.connect('activate', self.diff._on_wraplines_toggled)
450
 
        mb_view_wrapsource.show()
451
 
        mb_view_menu.append(mb_view_wrapsource)
452
 
        mb_view.show()
453
 
        mb_view.set_submenu(mb_view_menu)
454
 
        mb_view.show()
455
 
        menubar.append(mb_view)
456
 
        menubar.show()
457
 
        return menubar
458
 
    
459
 
    def _get_button_bar(self, operations):
460
 
        """Return a button bar to use.
461
 
 
462
 
        :return: None, meaning that no button bar will be used.
463
 
        """
464
 
        if operations is None:
465
 
            return None
466
 
        hbox = Gtk.HButtonBox()
467
 
        hbox.set_layout(Gtk.ButtonBoxStyle.START)
468
 
        for title, method in operations:
469
 
            merge_button = Gtk.Button(title)
470
 
            merge_button.show()
471
 
            merge_button.set_relief(Gtk.ReliefStyle.NONE)
472
 
            merge_button.connect("clicked", method)
473
 
            hbox.pack_start(merge_button, expand=False, fill=True)
474
 
        hbox.show()
475
 
        return hbox
476
 
 
477
 
    def _get_merge_target(self):
478
 
        d = Gtk.FileChooserDialog('Merge branch', self,
479
 
                                  Gtk.FileChooserAction.SELECT_FOLDER,
480
 
                                  buttons=(Gtk.STOCK_OK, Gtk.ResponseType.OK,
481
 
                                           Gtk.STOCK_CANCEL,
482
 
                                           Gtk.ResponseType.CANCEL,))
483
 
        try:
484
 
            result = d.run()
485
 
            if result != Gtk.ResponseType.OK:
486
 
                raise SelectCancelled()
487
 
            return d.get_current_folder_uri()
488
 
        finally:
489
 
            d.destroy()
490
 
 
491
 
    def _merge_successful(self):
492
 
        # No conflicts found.
493
 
        info_dialog(_i18n('Merge successful'),
494
 
                    _i18n('All changes applied successfully.'))
495
 
 
496
 
    def _conflicts(self):
497
 
        warning_dialog(_i18n('Conflicts encountered'),
498
 
                       _i18n('Please resolve the conflicts manually'
499
 
                             ' before committing.'))
500
 
 
501
 
    def _handle_error(self, e):
502
 
        error_dialog('Error', str(e))
503
 
 
504
 
    def _get_save_path(self, basename):
505
 
        d = Gtk.FileChooserDialog('Save As', self,
506
 
                                  Gtk.FileChooserAction.SAVE,
507
 
                                  buttons=(Gtk.STOCK_OK, Gtk.ResponseType.OK,
508
 
                                           Gtk.STOCK_CANCEL,
509
 
                                           Gtk.ResponseType.CANCEL,))
510
 
        d.set_current_name(basename)
511
 
        try:
512
 
            result = d.run()
513
 
            if result != Gtk.ResponseType.OK:
514
 
                raise SelectCancelled()
515
 
            return urlutils.local_path_from_url(d.get_uri())
516
 
        finally:
517
 
            d.destroy()
518
 
 
519
 
    def set_diff(self, description, rev_tree, parent_tree):
520
 
        """Set the differences showed by this window.
521
 
 
522
 
        Compares the two trees and populates the window with the
523
 
        differences.
524
 
        """
525
 
        self.diff.set_diff(rev_tree, parent_tree)
526
 
        self.set_title(description + " - bzrk diff")
527
 
 
528
 
    def set_file(self, file_path):
529
 
        self.diff.set_file(file_path)
530
 
 
531
 
 
532
 
class DiffController(object):
533
 
 
534
 
    def __init__(self, path, patch, window=None, allow_dirty=False):
535
 
        self.path = path
536
 
        self.patch = patch
537
 
        self.allow_dirty = allow_dirty
538
 
        if window is None:
539
 
            window = DiffWindow(operations=self._provide_operations())
540
 
            self.initialize_window(window)
541
 
        self.window = window
542
 
 
543
 
    def initialize_window(self, window):
544
 
        window.diff.set_diff_text_sections(self.get_diff_sections())
545
 
        window.set_title(self.path + " - diff")
546
 
 
547
 
    def get_diff_sections(self):
548
 
        yield "Complete Diff", None, ''.join(self.patch)
549
 
        # allow_dirty was added to parse_patches in bzrlib 2.2b1
550
 
        if 'allow_dirty' in inspect.getargspec(parse_patches).args:
551
 
            patches = parse_patches(self.patch, allow_dirty=self.allow_dirty)
552
 
        else:
553
 
            patches = parse_patches(self.patch)
554
 
        for patch in patches:
555
 
            oldname = patch.oldname.split('\t')[0]
556
 
            newname = patch.newname.split('\t')[0]
557
 
            yield oldname, newname, str(patch)
558
 
 
559
 
    def perform_save(self, window):
560
 
        try:
561
 
            save_path = self.window._get_save_path(osutils.basename(self.path))
562
 
        except SelectCancelled:
563
 
            return
564
 
        source = open(self.path, 'rb')
565
 
        try:
566
 
            target = open(save_path, 'wb')
567
 
            try:
568
 
                osutils.pumpfile(source, target)
569
 
            finally:
570
 
                target.close()
571
 
        finally:
572
 
            source.close()
573
 
 
574
 
    def _provide_operations(self):
575
 
        return [('Save', self.perform_save)]
576
 
 
577
 
 
578
 
class MergeDirectiveController(DiffController):
579
 
 
580
 
    def __init__(self, path, directive, window=None):
581
 
        DiffController.__init__(self, path, directive.patch.splitlines(True),
582
 
                                window)
583
 
        self.directive = directive
584
 
        self.merge_target = None
585
 
 
586
 
    def _provide_operations(self):
587
 
        return [('Merge', self.perform_merge), ('Save', self.perform_save)]
588
 
 
589
 
    def perform_merge(self, window):
590
 
        if self.merge_target is None:
591
 
            try:
592
 
                self.merge_target = self.window._get_merge_target()
593
 
            except SelectCancelled:
594
 
                return
595
 
        tree = workingtree.WorkingTree.open(self.merge_target)
596
 
        tree.lock_write()
597
 
        try:
598
 
            try:
599
 
                if tree.has_changes():
600
 
                    raise errors.UncommittedChanges(tree)
601
 
                merger, verified = _mod_merge.Merger.from_mergeable(
602
 
                    tree, self.directive, pb=None)
603
 
                merger.merge_type = _mod_merge.Merge3Merger
604
 
                conflict_count = merger.do_merge()
605
 
                merger.set_pending()
606
 
                if conflict_count == 0:
607
 
                    self.window._merge_successful()
608
 
                else:
609
 
                    self.window._conflicts()
610
 
                    # There are conflicts to be resolved.
611
 
                self.window.destroy()
612
 
            except Exception, e:
613
 
                self.window._handle_error(e)
614
 
        finally:
615
 
            tree.unlock()
616
 
 
617
 
 
618
 
def iter_changes_to_status(source, target):
619
 
    """Determine the differences between trees.
620
 
 
621
 
    This is a wrapper around iter_changes which just yields more
622
 
    understandable results.
623
 
 
624
 
    :param source: The source tree (basis tree)
625
 
    :param target: The target tree
626
 
    :return: A list of (file_id, real_path, change_type, display_path)
627
 
    """
628
 
    added = 'added'
629
 
    removed = 'removed'
630
 
    renamed = 'renamed'
631
 
    renamed_and_modified = 'renamed and modified'
632
 
    modified = 'modified'
633
 
    kind_changed = 'kind changed'
634
 
    missing = 'missing'
635
 
 
636
 
    # TODO: Handle metadata changes
637
 
 
638
 
    status = []
639
 
    target.lock_read()
640
 
    try:
641
 
        source.lock_read()
642
 
        try:
643
 
            for (file_id, paths, changed_content, versioned, parent_ids, names,
644
 
                 kinds, executables) in target.iter_changes(source):
645
 
 
646
 
                # Skip the root entry if it isn't very interesting
647
 
                if parent_ids == (None, None):
648
 
                    continue
649
 
 
650
 
                change_type = None
651
 
                if kinds[0] is None:
652
 
                    source_marker = ''
653
 
                else:
654
 
                    source_marker = osutils.kind_marker(kinds[0])
655
 
 
656
 
                if kinds[1] is None:
657
 
                    if kinds[0] is None:
658
 
                        # We assume bzr will flag only files in that case,
659
 
                        # there may be a bzr bug there as only files seems to
660
 
                        # not receive any kind.
661
 
                        marker = osutils.kind_marker('file')
662
 
                    else:
663
 
                        marker = osutils.kind_marker(kinds[0])
664
 
                else:
665
 
                    marker = osutils.kind_marker(kinds[1])
666
 
 
667
 
                real_path = paths[1]
668
 
                if real_path is None:
669
 
                    real_path = paths[0]
670
 
                assert real_path is not None
671
 
 
672
 
                present_source = versioned[0] and kinds[0] is not None
673
 
                present_target = versioned[1] and kinds[1] is not None
674
 
 
675
 
                if kinds[0] is None and kinds[1] is None:
676
 
                    change_type = missing
677
 
                    display_path = real_path + marker
678
 
                elif present_source != present_target:
679
 
                    if present_target:
680
 
                        change_type = added
681
 
                    else:
682
 
                        assert present_source
683
 
                        change_type = removed
684
 
                    display_path = real_path + marker
685
 
                elif names[0] != names[1] or parent_ids[0] != parent_ids[1]:
686
 
                    # Renamed
687
 
                    if changed_content or executables[0] != executables[1]:
688
 
                        # and modified
689
 
                        change_type = renamed_and_modified
690
 
                    else:
691
 
                        change_type = renamed
692
 
                    display_path = (paths[0] + source_marker
693
 
                                    + ' => ' + paths[1] + marker)
694
 
                elif kinds[0] != kinds[1]:
695
 
                    change_type = kind_changed
696
 
                    display_path = (paths[0] + source_marker
697
 
                                    + ' => ' + paths[1] + marker)
698
 
                elif changed_content or executables[0] != executables[1]:
699
 
                    change_type = modified
700
 
                    display_path = real_path + marker
701
 
                else:
702
 
                    assert False, "How did we get here?"
703
 
 
704
 
                status.append((file_id, real_path, change_type, display_path))
705
 
        finally:
706
 
            source.unlock()
707
 
    finally:
708
 
        target.unlock()
709
 
 
710
 
    return status
 
148
            specific_files = []
 
149
 
 
150
        s = StringIO()
 
151
        show_diff_trees(self.parent_tree, self.rev_tree, s, specific_files)
 
152
        self.buffer.set_text(s.getvalue())