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  • Committer: Jelmer Vernooij
  • Date: 2012-07-09 15:23:26 UTC
  • mto: This revision was merged to the branch mainline in revision 794.
  • Revision ID: jelmer@samba.org-20120709152326-dzxb8zoz0btull7n
Remove bzr-notify.

Show diffs side-by-side

added added

removed removed

Lines of Context:
1
 
# -*- coding: UTF-8 -*-
2
1
"""Difference window.
3
2
 
4
3
This module contains the code to manage the diff window which shows
5
4
the changes made between two revisions on a branch.
6
5
"""
7
6
 
8
 
__copyright__ = "Copyright © 2005 Canonical Ltd."
9
 
__author__    = "Scott James Remnant <scott@ubuntu.com>"
 
7
__copyright__ = "Copyright 2005 Canonical Ltd."
 
8
__author__ = "Scott James Remnant <scott@ubuntu.com>"
10
9
 
11
10
 
12
11
from cStringIO import StringIO
13
12
 
14
 
import pygtk
15
 
pygtk.require("2.0")
16
 
import gtk
17
 
import pango
18
 
import os
19
 
import re
20
13
import sys
 
14
import inspect
21
15
 
 
16
from gi.repository import Gtk
 
17
from gi.repository import Pango
22
18
try:
23
 
    import gtksourceview
 
19
    from gi.repository import GtkSource
24
20
    have_gtksourceview = True
25
21
except ImportError:
26
22
    have_gtksourceview = False
27
 
try:
28
 
    import gconf
29
 
    have_gconf = True
30
 
except ImportError:
31
 
    have_gconf = False
32
 
 
33
 
import bzrlib
34
 
 
 
23
 
 
24
from bzrlib import (
 
25
    errors,
 
26
    merge as _mod_merge,
 
27
    osutils,
 
28
    urlutils,
 
29
    workingtree,
 
30
    )
35
31
from bzrlib.diff import show_diff_trees
36
 
from bzrlib.errors import NoSuchFile
37
 
from bzrlib.trace import warning
38
 
 
39
 
 
40
 
class DiffWindow(gtk.Window):
41
 
    """Diff window.
42
 
 
43
 
    This object represents and manages a single window containing the
44
 
    differences between two revisions on a branch.
45
 
    """
 
32
from bzrlib.patches import parse_patches
 
33
from bzrlib.plugins.gtk.dialog import (
 
34
    error_dialog,
 
35
    info_dialog,
 
36
    warning_dialog,
 
37
    )
 
38
from bzrlib.plugins.gtk.i18n import _i18n
 
39
from bzrlib.plugins.gtk.window import Window
 
40
 
 
41
 
 
42
def fallback_guess_language(slm, content_type):
 
43
    for lang_id in slm.get_language_ids():
 
44
        lang = slm.get_language(lang_id)
 
45
        if "text/x-patch" in lang.get_mime_types():
 
46
            return lang
 
47
    return None
 
48
 
 
49
 
 
50
class SelectCancelled(Exception):
 
51
 
 
52
    pass
 
53
 
 
54
 
 
55
class DiffFileView(Gtk.ScrolledWindow):
 
56
    """Window for displaying diffs from a diff file"""
 
57
 
 
58
    SHOW_WIDGETS = True
46
59
 
47
60
    def __init__(self):
48
 
        gtk.Window.__init__(self, gtk.WINDOW_TOPLEVEL)
49
 
        self.set_border_width(0)
50
 
        self.set_title("bzrk diff")
51
 
 
52
 
        # Use two thirds of the screen by default
53
 
        screen = self.get_screen()
54
 
        monitor = screen.get_monitor_geometry(0)
55
 
        width = int(monitor.width * 0.66)
56
 
        height = int(monitor.height * 0.66)
57
 
        self.set_default_size(width, height)
58
 
 
 
61
        super(DiffFileView, self).__init__()
59
62
        self.construct()
 
63
        self._diffs = {}
60
64
 
61
65
    def construct(self):
62
 
        """Construct the window contents."""
63
 
        # The   window  consists  of   a  pane   containing:  the
64
 
        # hierarchical list  of files on  the left, and  the diff
65
 
        # for the currently selected file on the right.
66
 
        pane = gtk.HPaned()
67
 
        self.add(pane)
68
 
        pane.show()
 
66
        self.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
 
67
        self.set_shadow_type(Gtk.ShadowType.IN)
 
68
 
 
69
        if have_gtksourceview:
 
70
            self.buffer = GtkSource.Buffer()
 
71
            lang_manager = GtkSource.LanguageManager.get_default()
 
72
            language = lang_manager.guess_language(None, "text/x-patch")
 
73
            self.buffer.set_language(language)
 
74
            self.buffer.set_highlight_syntax(True)
 
75
            self.sourceview = GtkSource.View(buffer=self.buffer)
 
76
        else:
 
77
            self.buffer = Gtk.TextBuffer()
 
78
            self.sourceview = Gtk.TextView(self.buffer)
 
79
 
 
80
        self.sourceview.set_editable(False)
 
81
        self.sourceview.override_font(Pango.FontDescription("Monospace"))
 
82
        self.add(self.sourceview)
 
83
        if self.SHOW_WIDGETS:
 
84
            self.sourceview.show()
 
85
 
 
86
    def set_trees(self, rev_tree, parent_tree):
 
87
        self.rev_tree = rev_tree
 
88
        self.parent_tree = parent_tree
 
89
#        self._build_delta()
 
90
 
 
91
#    def _build_delta(self):
 
92
#        self.parent_tree.lock_read()
 
93
#        self.rev_tree.lock_read()
 
94
#        try:
 
95
#            self.delta = iter_changes_to_status(
 
96
#               self.parent_tree, self.rev_tree)
 
97
#            self.path_to_status = {}
 
98
#            self.path_to_diff = {}
 
99
#            source_inv = self.parent_tree.inventory
 
100
#            target_inv = self.rev_tree.inventory
 
101
#            for (file_id, real_path, change_type, display_path) in self.delta:
 
102
#                self.path_to_status[real_path] = u'=== %s %s' % (
 
103
#                    change_type, display_path)
 
104
#                if change_type in ('modified', 'renamed and modified'):
 
105
#                    source_ie = source_inv[file_id]
 
106
#                    target_ie = target_inv[file_id]
 
107
#                    sio = StringIO()
 
108
#                    source_ie.diff(internal_diff, *old path, *old_tree,
 
109
#                                   *new_path, target_ie, self.rev_tree,
 
110
#                                   sio)
 
111
#                    self.path_to_diff[real_path] =
 
112
#
 
113
#        finally:
 
114
#            self.rev_tree.unlock()
 
115
#            self.parent_tree.unlock()
 
116
 
 
117
    def show_diff(self, specific_files):
 
118
        sections = []
 
119
        if specific_files is None:
 
120
            self.buffer.set_text(self._diffs[None])
 
121
        else:
 
122
            for specific_file in specific_files:
 
123
                sections.append(self._diffs[specific_file])
 
124
            self.buffer.set_text(''.join(sections))
 
125
 
 
126
 
 
127
class DiffView(DiffFileView):
 
128
    """This is the soft and chewy filling for a DiffWindow."""
 
129
 
 
130
    def __init__(self):
 
131
        super(DiffView, self).__init__()
 
132
        self.rev_tree = None
 
133
        self.parent_tree = None
 
134
 
 
135
    def show_diff(self, specific_files):
 
136
        """Show the diff for the specified files"""
 
137
        s = StringIO()
 
138
        show_diff_trees(self.parent_tree, self.rev_tree, s, specific_files,
 
139
                        old_label='', new_label='',
 
140
                        # path_encoding=sys.getdefaultencoding()
 
141
                        # The default is utf-8, but we interpret the file
 
142
                        # contents as getdefaultencoding(), so we should
 
143
                        # probably try to make the paths in the same encoding.
 
144
                        )
 
145
        # str.decode(encoding, 'replace') doesn't do anything. Because if a
 
146
        # character is not valid in 'encoding' there is nothing to replace, the
 
147
        # 'replace' is for 'str.encode()'
 
148
        try:
 
149
            decoded = s.getvalue().decode(sys.getdefaultencoding())
 
150
        except UnicodeDecodeError:
 
151
            try:
 
152
                decoded = s.getvalue().decode('UTF-8')
 
153
            except UnicodeDecodeError:
 
154
                decoded = s.getvalue().decode('iso-8859-1')
 
155
                # This always works, because every byte has a valid
 
156
                # mapping from iso-8859-1 to Unicode
 
157
        # TextBuffer must contain pure UTF-8 data
 
158
        self.buffer.set_text(decoded.encode('UTF-8'))
 
159
 
 
160
 
 
161
class DiffWidget(Gtk.HPaned):
 
162
    """Diff widget
 
163
 
 
164
    """
 
165
 
 
166
    SHOW_WIDGETS = True
 
167
 
 
168
    def __init__(self):
 
169
        super(DiffWidget, self).__init__()
69
170
 
70
171
        # The file hierarchy: a scrollable treeview
71
 
        scrollwin = gtk.ScrolledWindow()
72
 
        scrollwin.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)
73
 
        scrollwin.set_shadow_type(gtk.SHADOW_IN)
74
 
        pane.pack1(scrollwin)
75
 
        scrollwin.show()
 
172
        scrollwin = Gtk.ScrolledWindow()
 
173
        scrollwin.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC)
 
174
        scrollwin.set_shadow_type(Gtk.ShadowType.IN)
 
175
        self.pack1(scrollwin)
 
176
        if self.SHOW_WIDGETS:
 
177
            scrollwin.show()
76
178
 
77
 
        self.model = gtk.TreeStore(str, str)
78
 
        self.treeview = gtk.TreeView(self.model)
 
179
        self.model = Gtk.TreeStore(str, str)
 
180
        self.treeview = Gtk.TreeView(model=self.model)
79
181
        self.treeview.set_headers_visible(False)
80
182
        self.treeview.set_search_column(1)
81
183
        self.treeview.connect("cursor-changed", self._treeview_cursor_cb)
82
184
        scrollwin.add(self.treeview)
83
 
        self.treeview.show()
 
185
        if self.SHOW_WIDGETS:
 
186
            self.treeview.show()
84
187
 
85
 
        cell = gtk.CellRendererText()
 
188
        cell = Gtk.CellRendererText()
86
189
        cell.set_property("width-chars", 20)
87
 
        column = gtk.TreeViewColumn()
88
 
        column.pack_start(cell, expand=True)
 
190
        column = Gtk.TreeViewColumn()
 
191
        column.pack_start(cell, True)
89
192
        column.add_attribute(cell, "text", 0)
90
193
        self.treeview.append_column(column)
91
194
 
 
195
    def set_diff_text(self, lines):
 
196
        """Set the current diff from a list of lines
 
197
 
 
198
        :param lines: The diff to show, in unified diff format
 
199
        """
92
200
        # The diffs of the  selected file: a scrollable source or
93
201
        # text view
94
 
        scrollwin = gtk.ScrolledWindow()
95
 
        scrollwin.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
96
 
        scrollwin.set_shadow_type(gtk.SHADOW_IN)
97
 
        pane.pack2(scrollwin)
98
 
        scrollwin.show()
99
 
 
100
 
        if have_gtksourceview:
101
 
            self.buffer = gtksourceview.SourceBuffer()
102
 
            slm = gtksourceview.SourceLanguagesManager()
103
 
            gsl = slm.get_language_from_mime_type("text/x-patch")
104
 
            if have_gconf:
105
 
                self.apply_gedit_colors(gsl)
106
 
            self.apply_colordiff_colors(gsl)
107
 
            self.buffer.set_language(gsl)
108
 
            self.buffer.set_highlight(True)
109
 
 
110
 
            sourceview = gtksourceview.SourceView(self.buffer)
111
 
        else:
112
 
            self.buffer = gtk.TextBuffer()
113
 
            sourceview = gtk.TextView(self.buffer)
114
 
 
115
 
        sourceview.set_editable(False)
116
 
        sourceview.modify_font(pango.FontDescription("Monospace"))
117
 
        scrollwin.add(sourceview)
118
 
        sourceview.show()
119
 
 
120
 
    def set_diff(self, description, rev_tree, parent_tree):
 
202
 
 
203
    def set_diff_text_sections(self, sections):
 
204
        if getattr(self, 'diff_view', None) is None:
 
205
            self.diff_view = DiffFileView()
 
206
            self.pack2(self.diff_view)
 
207
        if self.SHOW_WIDGETS:
 
208
            self.diff_view.show()
 
209
        for oldname, newname, patch in sections:
 
210
            self.diff_view._diffs[newname] = str(patch)
 
211
            if newname is None:
 
212
                newname = ''
 
213
            self.model.append(None, [oldname, newname])
 
214
        self.diff_view.show_diff(None)
 
215
 
 
216
    def set_diff(self, rev_tree, parent_tree):
121
217
        """Set the differences showed by this window.
122
218
 
123
219
        Compares the two trees and populates the window with the
124
220
        differences.
125
221
        """
 
222
        if getattr(self, 'diff_view', None) is None:
 
223
            self.diff_view = DiffView()
 
224
            self.pack2(self.diff_view)
 
225
        if self.SHOW_WIDGETS:
 
226
            self.diff_view.show()
 
227
        self.diff_view.set_trees(rev_tree, parent_tree)
126
228
        self.rev_tree = rev_tree
127
229
        self.parent_tree = parent_tree
128
230
 
129
231
        self.model.clear()
130
232
        delta = self.rev_tree.changes_from(self.parent_tree)
131
233
 
132
 
        self.model.append(None, [ "Complete Diff", "" ])
 
234
        self.model.append(None, ["Complete Diff", ""])
133
235
 
134
236
        if len(delta.added):
135
 
            titer = self.model.append(None, [ "Added", None ])
 
237
            titer = self.model.append(None, ["Added", None])
136
238
            for path, id, kind in delta.added:
137
 
                self.model.append(titer, [ path, path ])
 
239
                self.model.append(titer, [path, path])
138
240
 
139
241
        if len(delta.removed):
140
 
            titer = self.model.append(None, [ "Removed", None ])
 
242
            titer = self.model.append(None, ["Removed", None])
141
243
            for path, id, kind in delta.removed:
142
 
                self.model.append(titer, [ path, path ])
 
244
                self.model.append(titer, [path, path])
143
245
 
144
246
        if len(delta.renamed):
145
 
            titer = self.model.append(None, [ "Renamed", None ])
 
247
            titer = self.model.append(None, ["Renamed", None])
146
248
            for oldpath, newpath, id, kind, text_modified, meta_modified \
147
249
                    in delta.renamed:
148
 
                self.model.append(titer, [ oldpath, newpath ])
 
250
                self.model.append(titer, [oldpath, newpath])
149
251
 
150
252
        if len(delta.modified):
151
 
            titer = self.model.append(None, [ "Modified", None ])
 
253
            titer = self.model.append(None, ["Modified", None])
152
254
            for path, id, kind, text_modified, meta_modified in delta.modified:
153
 
                self.model.append(titer, [ path, path ])
 
255
                self.model.append(titer, [path, path])
154
256
 
155
257
        self.treeview.expand_all()
156
 
        self.set_title(description + " - bzrk diff")
 
258
        self.diff_view.show_diff(None)
157
259
 
158
260
    def set_file(self, file_path):
 
261
        """Select the current file to display"""
159
262
        tv_path = None
160
263
        for data in self.model:
161
264
            for child in data.iterchildren():
163
266
                    tv_path = child.path
164
267
                    break
165
268
        if tv_path is None:
166
 
            raise NoSuchFile(file_path)
167
 
        self.treeview.set_cursor(tv_path)
 
269
            raise errors.NoSuchFile(file_path)
 
270
        self.treeview.set_cursor(tv_path, None, False)
168
271
        self.treeview.scroll_to_cell(tv_path)
169
272
 
170
273
    def _treeview_cursor_cb(self, *args):
171
274
        """Callback for when the treeview cursor changes."""
172
275
        (path, col) = self.treeview.get_cursor()
173
 
        specific_files = [ self.model[path][1] ]
174
 
        if specific_files == [ None ]:
175
 
            return
176
 
        elif specific_files == [ "" ]:
177
 
            specific_files = []
178
 
 
179
 
        s = StringIO()
180
 
        show_diff_trees(self.parent_tree, self.rev_tree, s, specific_files)
181
 
        self.buffer.set_text(s.getvalue().decode(sys.getdefaultencoding(), 'replace'))
182
 
 
183
 
    @staticmethod
184
 
    def apply_gedit_colors(lang):
185
 
        """Set style for lang to that specified in gedit configuration.
186
 
 
187
 
        This method needs the gconf module.
188
 
        
189
 
        :param lang: a gtksourceview.SourceLanguage object.
190
 
        """
191
 
        GEDIT_SYNTAX_PATH = '/apps/gedit-2/preferences/syntax_highlighting'
192
 
        GEDIT_LANG_PATH = GEDIT_SYNTAX_PATH + '/' + lang.get_id()
193
 
 
194
 
        client = gconf.client_get_default()
195
 
        client.add_dir(GEDIT_LANG_PATH, gconf.CLIENT_PRELOAD_NONE)
196
 
 
197
 
        for tag in lang.get_tags():
198
 
            tag_id = tag.get_id()
199
 
            gconf_key = GEDIT_LANG_PATH + '/' + tag_id
200
 
            style_string = client.get_string(gconf_key)
201
 
 
202
 
            if style_string is None:
203
 
                continue
204
 
 
205
 
            # function to get a bool from a string that's either '0' or '1'
206
 
            string_bool = lambda x: bool(int(x))
207
 
 
208
 
            # style_string is a string like "2/#FFCCAA/#000000/0/1/0/0"
209
 
            # values are: mask, fg, bg, italic, bold, underline, strike
210
 
            # this packs them into (str_value, attr_name, conv_func) tuples
211
 
            items = zip(style_string.split('/'), ['mask', 'foreground',
212
 
                'background', 'italic', 'bold', 'underline', 'strikethrough' ],
213
 
                [ int, gtk.gdk.color_parse, gtk.gdk.color_parse, string_bool,
214
 
                    string_bool, string_bool, string_bool ]
215
 
            )
216
 
 
217
 
            style = gtksourceview.SourceTagStyle()
218
 
 
219
 
            # XXX The mask attribute controls whether the present values of
220
 
            # foreground and background color should in fact be used. Ideally
221
 
            # (and that's what gedit does), one could set all three attributes,
222
 
            # and let the TagStyle object figure out which colors to use.
223
 
            # However, in the GtkSourceview python bindings, the mask attribute
224
 
            # is read-only, and it's derived instead from the colors being
225
 
            # set or not. This means that we have to sometimes refrain from
226
 
            # setting fg or bg colors, depending on the value of the mask.
227
 
            # This code could go away if mask were writable.
228
 
            mask = int(items[0][0])
229
 
            if not (mask & 1): # GTK_SOURCE_TAG_STYLE_USE_BACKGROUND
230
 
                items[2:3] = []
231
 
            if not (mask & 2): # GTK_SOURCE_TAG_STYLE_USE_FOREGROUND
232
 
                items[1:2] = []
233
 
            items[0:1] = [] # skip the mask unconditionally
234
 
 
235
 
            for value, attr, func in items:
236
 
                try:
237
 
                    value = func(value)
238
 
                except ValueError:
239
 
                    warning('gconf key %s contains an invalid value: %s'
240
 
                            % gconf_key, value)
241
 
                else:
242
 
                    setattr(style, attr, value)
243
 
 
244
 
            lang.set_tag_style(tag_id, style)
245
 
 
246
 
    @staticmethod
247
 
    def apply_colordiff_colors(lang):
248
 
        """Set style colors for lang using the colordiff configuration file.
249
 
 
250
 
        Both ~/.colordiffrc and ~/.colordiffrc.bzr-gtk are read.
251
 
 
252
 
        :param lang: a "Diff" gtksourceview.SourceLanguage object.
253
 
        """
254
 
        colors = {}
255
 
 
256
 
        for f in ('~/.colordiffrc', '~/.colordiffrc.bzr-gtk'):
257
 
            f = os.path.expanduser(f)
258
 
            if os.path.exists(f):
259
 
                try:
260
 
                    f = file(f)
261
 
                except IOError, e:
262
 
                    warning('could not open file %s: %s' % (f, str(e)))
263
 
                else:
264
 
                    colors.update(DiffWindow.parse_colordiffrc(f))
265
 
                    f.close()
266
 
 
267
 
        if not colors:
268
 
            # ~/.colordiffrc does not exist
269
 
            return
270
 
 
271
 
        mapping = {
272
 
                # map GtkSourceView tags to colordiff names
273
 
                # since GSV is richer, accept new names for extra bits,
274
 
                # defaulting to old names if they're not present
275
 
                'Added@32@line': ['newtext'],
276
 
                'Removed@32@line': ['oldtext'],
277
 
                'Location': ['location', 'diffstuff'],
278
 
                'Diff@32@file': ['file', 'diffstuff'],
279
 
                'Special@32@case': ['specialcase', 'diffstuff'],
280
 
        }
281
 
 
282
 
        for tag in lang.get_tags():
283
 
            tag_id = tag.get_id()
284
 
            keys = mapping.get(tag_id, [])
285
 
            color = None
286
 
 
287
 
            for key in keys:
288
 
                color = colors.get(key, None)
289
 
                if color is not None:
290
 
                    break
291
 
 
292
 
            if color is None:
293
 
                continue
294
 
 
295
 
            style = gtksourceview.SourceTagStyle()
296
 
            try:
297
 
                style.foreground = gtk.gdk.color_parse(color)
298
 
            except ValueError:
299
 
                warning('not a valid color: %s' % color)
300
 
            else:
301
 
                lang.set_tag_style(tag_id, style)
302
 
 
303
 
    @staticmethod
304
 
    def parse_colordiffrc(fileobj):
305
 
        """Parse fileobj as a colordiff configuration file.
306
 
        
307
 
        :return: A dict with the key -> value pairs.
308
 
        """
309
 
        colors = {}
310
 
        for line in fileobj:
311
 
            if re.match(r'^\s*#', line):
312
 
                continue
313
 
            if '=' not in line:
314
 
                continue
315
 
            key, val = line.split('=', 1)
316
 
            colors[key.strip()] = val.strip()
317
 
        return colors
318
 
 
 
276
        if path is None:
 
277
            return
 
278
        specific_files = [self.model[path][1]]
 
279
        if specific_files == [None]:
 
280
            return
 
281
        elif specific_files == [""]:
 
282
            specific_files = None
 
283
 
 
284
        self.diff_view.show_diff(specific_files)
 
285
 
 
286
    def _on_wraplines_toggled(self, widget=None, wrap=False):
 
287
        """Callback for when the wrap lines checkbutton is toggled"""
 
288
        if wrap or widget.get_active():
 
289
            self.diff_view.sourceview.set_wrap_mode(Gtk.WrapMode.WORD)
 
290
        else:
 
291
            self.diff_view.sourceview.set_wrap_mode(Gtk.WrapMode.NONE)
 
292
 
 
293
 
 
294
class DiffWindow(Window):
 
295
    """Diff window.
 
296
 
 
297
    This object represents and manages a single window containing the
 
298
    differences between two revisions on a branch.
 
299
    """
 
300
 
 
301
    SHOW_WIDGETS = True
 
302
 
 
303
    def __init__(self, parent=None, operations=None):
 
304
        super(DiffWindow, self).__init__(parent=parent)
 
305
        self.set_border_width(0)
 
306
        self.set_title("bzr diff")
 
307
 
 
308
        # Use two thirds of the screen by default
 
309
        screen = self.get_screen()
 
310
        monitor = screen.get_monitor_geometry(0)
 
311
        width = int(monitor.width * 0.66)
 
312
        height = int(monitor.height * 0.66)
 
313
        self.set_default_size(width, height)
 
314
        self.construct(operations)
 
315
 
 
316
    def construct(self, operations):
 
317
        """Construct the window contents."""
 
318
        self.vbox = Gtk.VBox()
 
319
        self.add(self.vbox)
 
320
        if self.SHOW_WIDGETS:
 
321
            self.vbox.show()
 
322
        self.diff = DiffWidget()
 
323
        self.vbox.pack_end(self.diff, True, True, 0)
 
324
        if self.SHOW_WIDGETS:
 
325
            self.diff.show_all()
 
326
        # Build after DiffWidget to connect signals
 
327
        menubar = self._get_menu_bar()
 
328
        self.vbox.pack_start(menubar, False, False, 0)
 
329
        hbox = self._get_button_bar(operations)
 
330
        if hbox is not None:
 
331
            self.vbox.pack_start(hbox, False, True, 0)
 
332
 
 
333
    def _get_menu_bar(self):
 
334
        menubar = Gtk.MenuBar()
 
335
        # View menu
 
336
        mb_view = Gtk.MenuItem.new_with_mnemonic(_i18n("_View"))
 
337
        mb_view_menu = Gtk.Menu()
 
338
        mb_view_wrapsource = Gtk.CheckMenuItem.new_with_mnemonic(
 
339
            _i18n("Wrap _Long Lines"))
 
340
        mb_view_wrapsource.connect('activate', self.diff._on_wraplines_toggled)
 
341
        mb_view_menu.append(mb_view_wrapsource)
 
342
        mb_view.set_submenu(mb_view_menu)
 
343
        menubar.append(mb_view)
 
344
        if self.SHOW_WIDGETS:
 
345
            menubar.show_all()
 
346
        return menubar
 
347
 
 
348
    def _get_button_bar(self, operations):
 
349
        """Return a button bar to use.
 
350
 
 
351
        :return: None, meaning that no button bar will be used.
 
352
        """
 
353
        if operations is None:
 
354
            return None
 
355
        hbox = Gtk.HButtonBox()
 
356
        hbox.set_layout(Gtk.ButtonBoxStyle.START)
 
357
        for title, method in operations:
 
358
            merge_button = Gtk.Button(title)
 
359
            if self.SHOW_WIDGETS:
 
360
                merge_button.show()
 
361
            merge_button.set_relief(Gtk.ReliefStyle.NONE)
 
362
            merge_button.connect("clicked", method)
 
363
            hbox.pack_start(merge_button, False, True, 0)
 
364
        if self.SHOW_WIDGETS:
 
365
            hbox.show()
 
366
        return hbox
 
367
 
 
368
    def _get_merge_target(self):
 
369
        d = Gtk.FileChooserDialog('Merge branch', self,
 
370
                                  Gtk.FileChooserAction.SELECT_FOLDER,
 
371
                                  buttons=(Gtk.STOCK_OK, Gtk.ResponseType.OK,
 
372
                                           Gtk.STOCK_CANCEL,
 
373
                                           Gtk.ResponseType.CANCEL,))
 
374
        try:
 
375
            result = d.run()
 
376
            if result != Gtk.ResponseType.OK:
 
377
                raise SelectCancelled()
 
378
            return d.get_current_folder_uri()
 
379
        finally:
 
380
            d.destroy()
 
381
 
 
382
    def _merge_successful(self):
 
383
        # No conflicts found.
 
384
        info_dialog(_i18n('Merge successful'),
 
385
                    _i18n('All changes applied successfully.'))
 
386
 
 
387
    def _conflicts(self):
 
388
        warning_dialog(_i18n('Conflicts encountered'),
 
389
                       _i18n('Please resolve the conflicts manually'
 
390
                             ' before committing.'))
 
391
 
 
392
    def _handle_error(self, e):
 
393
        error_dialog('Error', str(e))
 
394
 
 
395
    def _get_save_path(self, basename):
 
396
        d = Gtk.FileChooserDialog('Save As', self,
 
397
                                  Gtk.FileChooserAction.SAVE,
 
398
                                  buttons=(Gtk.STOCK_OK, Gtk.ResponseType.OK,
 
399
                                           Gtk.STOCK_CANCEL,
 
400
                                           Gtk.ResponseType.CANCEL,))
 
401
        d.set_current_name(basename)
 
402
        try:
 
403
            result = d.run()
 
404
            if result != Gtk.ResponseType.OK:
 
405
                raise SelectCancelled()
 
406
            return urlutils.local_path_from_url(d.get_uri())
 
407
        finally:
 
408
            d.destroy()
 
409
 
 
410
    def set_diff(self, description, rev_tree, parent_tree):
 
411
        """Set the differences showed by this window.
 
412
 
 
413
        Compares the two trees and populates the window with the
 
414
        differences.
 
415
        """
 
416
        self.diff.set_diff(rev_tree, parent_tree)
 
417
        self.set_title(description + " - bzrk diff")
 
418
 
 
419
    def set_file(self, file_path):
 
420
        self.diff.set_file(file_path)
 
421
 
 
422
 
 
423
class DiffController(object):
 
424
 
 
425
    def __init__(self, path, patch, window=None, allow_dirty=False):
 
426
        self.path = path
 
427
        self.patch = patch
 
428
        self.allow_dirty = allow_dirty
 
429
        if window is None:
 
430
            window = DiffWindow(operations=self._provide_operations())
 
431
            self.initialize_window(window)
 
432
        self.window = window
 
433
 
 
434
    def initialize_window(self, window):
 
435
        window.diff.set_diff_text_sections(self.get_diff_sections())
 
436
        window.set_title(self.path + " - diff")
 
437
 
 
438
    def get_diff_sections(self):
 
439
        yield "Complete Diff", None, ''.join(self.patch)
 
440
        # allow_dirty was added to parse_patches in bzrlib 2.2b1
 
441
        if 'allow_dirty' in inspect.getargspec(parse_patches).args:
 
442
            patches = parse_patches(self.patch, allow_dirty=self.allow_dirty)
 
443
        else:
 
444
            patches = parse_patches(self.patch)
 
445
        for patch in patches:
 
446
            oldname = patch.oldname.split('\t')[0]
 
447
            newname = patch.newname.split('\t')[0]
 
448
            yield oldname, newname, str(patch)
 
449
 
 
450
    def perform_save(self, window):
 
451
        try:
 
452
            save_path = self.window._get_save_path(osutils.basename(self.path))
 
453
        except SelectCancelled:
 
454
            return
 
455
        source = open(self.path, 'rb')
 
456
        try:
 
457
            target = open(save_path, 'wb')
 
458
            try:
 
459
                osutils.pumpfile(source, target)
 
460
            finally:
 
461
                target.close()
 
462
        finally:
 
463
            source.close()
 
464
 
 
465
    def _provide_operations(self):
 
466
        return [('Save', self.perform_save)]
 
467
 
 
468
 
 
469
class MergeDirectiveController(DiffController):
 
470
 
 
471
    def __init__(self, path, directive, window=None):
 
472
        super(MergeDirectiveController, self).__init__(
 
473
            path, directive.patch.splitlines(True), window)
 
474
        self.directive = directive
 
475
        self.merge_target = None
 
476
 
 
477
    def _provide_operations(self):
 
478
        return [('Merge', self.perform_merge), ('Save', self.perform_save)]
 
479
 
 
480
    def perform_merge(self, window):
 
481
        if self.merge_target is None:
 
482
            try:
 
483
                self.merge_target = self.window._get_merge_target()
 
484
            except SelectCancelled:
 
485
                return
 
486
        tree = workingtree.WorkingTree.open(self.merge_target)
 
487
        tree.lock_write()
 
488
        try:
 
489
            try:
 
490
                if tree.has_changes():
 
491
                    raise errors.UncommittedChanges(tree)
 
492
                merger, verified = _mod_merge.Merger.from_mergeable(
 
493
                    tree, self.directive, pb=None)
 
494
                merger.merge_type = _mod_merge.Merge3Merger
 
495
                conflict_count = merger.do_merge()
 
496
                merger.set_pending()
 
497
                if conflict_count == 0:
 
498
                    self.window._merge_successful()
 
499
                else:
 
500
                    self.window._conflicts()
 
501
                    # There are conflicts to be resolved.
 
502
                self.window.destroy()
 
503
            except Exception, e:
 
504
                self.window._handle_error(e)
 
505
        finally:
 
506
            tree.unlock()
 
507
 
 
508
 
 
509
def iter_changes_to_status(source, target):
 
510
    """Determine the differences between trees.
 
511
 
 
512
    This is a wrapper around iter_changes which just yields more
 
513
    understandable results.
 
514
 
 
515
    :param source: The source tree (basis tree)
 
516
    :param target: The target tree
 
517
    :return: A list of (file_id, real_path, change_type, display_path)
 
518
    """
 
519
    added = 'added'
 
520
    removed = 'removed'
 
521
    renamed = 'renamed'
 
522
    renamed_and_modified = 'renamed and modified'
 
523
    modified = 'modified'
 
524
    kind_changed = 'kind changed'
 
525
    missing = 'missing'
 
526
 
 
527
    # TODO: Handle metadata changes
 
528
 
 
529
    status = []
 
530
    target.lock_read()
 
531
    try:
 
532
        source.lock_read()
 
533
        try:
 
534
            for (file_id, paths, changed_content, versioned, parent_ids, names,
 
535
                 kinds, executables) in target.iter_changes(source):
 
536
 
 
537
                # Skip the root entry if it isn't very interesting
 
538
                if parent_ids == (None, None):
 
539
                    continue
 
540
 
 
541
                change_type = None
 
542
                if kinds[0] is None:
 
543
                    source_marker = ''
 
544
                else:
 
545
                    source_marker = osutils.kind_marker(kinds[0])
 
546
 
 
547
                if kinds[1] is None:
 
548
                    if kinds[0] is None:
 
549
                        # We assume bzr will flag only files in that case,
 
550
                        # there may be a bzr bug there as only files seems to
 
551
                        # not receive any kind.
 
552
                        marker = osutils.kind_marker('file')
 
553
                    else:
 
554
                        marker = osutils.kind_marker(kinds[0])
 
555
                else:
 
556
                    marker = osutils.kind_marker(kinds[1])
 
557
 
 
558
                real_path = paths[1]
 
559
                if real_path is None:
 
560
                    real_path = paths[0]
 
561
                assert real_path is not None
 
562
 
 
563
                present_source = versioned[0] and kinds[0] is not None
 
564
                present_target = versioned[1] and kinds[1] is not None
 
565
 
 
566
                if kinds[0] is None and kinds[1] is None:
 
567
                    change_type = missing
 
568
                    display_path = real_path + marker
 
569
                elif present_source != present_target:
 
570
                    if present_target:
 
571
                        change_type = added
 
572
                    else:
 
573
                        assert present_source
 
574
                        change_type = removed
 
575
                    display_path = real_path + marker
 
576
                elif names[0] != names[1] or parent_ids[0] != parent_ids[1]:
 
577
                    # Renamed
 
578
                    if changed_content or executables[0] != executables[1]:
 
579
                        # and modified
 
580
                        change_type = renamed_and_modified
 
581
                    else:
 
582
                        change_type = renamed
 
583
                    display_path = (paths[0] + source_marker
 
584
                                    + ' => ' + paths[1] + marker)
 
585
                elif kinds[0] != kinds[1]:
 
586
                    change_type = kind_changed
 
587
                    display_path = (paths[0] + source_marker
 
588
                                    + ' => ' + paths[1] + marker)
 
589
                elif changed_content or executables[0] != executables[1]:
 
590
                    change_type = modified
 
591
                    display_path = real_path + marker
 
592
                else:
 
593
                    assert False, "How did we get here?"
 
594
 
 
595
                status.append((file_id, real_path, change_type, display_path))
 
596
        finally:
 
597
            source.unlock()
 
598
    finally:
 
599
        target.unlock()
 
600
 
 
601
    return status