comments: edit functionality added

rhodecode/lib/dbmigrate/versions/108_version_4_19_1.py

@@ -0,0 +1,35 b''
+# -*- coding: utf-8 -*-
+
+import logging
+from sqlalchemy import *
+
+from alembic.migration import MigrationContext
+from alembic.operations import Operations
+from sqlalchemy import BigInteger
+
+from rhodecode.lib.dbmigrate.versions import _reset_base
+from rhodecode.model import init_model_encryption
+
+
+log = logging.getLogger(__name__)
+
+
+def upgrade(migrate_engine):
+    """
+    Upgrade operations go here.
+    Don't create your own engine; bind migrate_engine to your metadata
+    """
+    _reset_base(migrate_engine)
+    from rhodecode.lib.dbmigrate.schema import db_4_19_0_2 as db
+
+    init_model_encryption(db)
+    db.ChangesetCommentHistory().__table__.create()
+
+
+def downgrade(migrate_engine):
+    meta = MetaData()
+    meta.bind = migrate_engine
+
+
+def fixups(models, _SESSION):
+    pass

rhodecode/lib/html_filters.py

@@ -0,0 +1,25 b''
+# -*- coding: utf-8 -*-
+
+# Copyright (C) 2020-2020 RhodeCode GmbH
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License, version 3
+# (only), as published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# This program is dual-licensed. If you wish to learn more about the
+# RhodeCode Enterprise Edition, including its added features, Support services,
+# and proprietary license terms, please see https://rhodecode.com/licenses/
+
+## base64 filter e.g ${ example | base64,n }
+def base64(text):
+    import base64
+    from rhodecode.lib.helpers import safe_str
+    return base64.encodestring(safe_str(text))

rhodecode/templates/changeset/comment_history.mako

@@ -0,0 +1,7 b''
+<%namespace name="base" file="/base/base.mako"/>
+
+${c.comment_history.author.email}
+${base.gravatar_with_user(c.comment_history.author.email, 16, tooltip=True)}
+${h.age_component(c.comment_history.created_on)}
+${c.comment_history.text}
+${c.comment_history.version}
  No newline at end of file

rhodecode/__init__.py

@@ -48,7 +48,7 b' PYRAMID_SETTINGS = {}'
 EXTENSIONS = {}
 
 __version__ = ('.'.join((str(each) for each in VERSION[:3])))
-__dbversion__ = 107  # defines current db version for migrations
+__dbversion__ = 108  # defines current db version for migrations
 __platform__ = platform.system()
 __license__ = 'AGPLv3, and Commercial License'
 __author__ = 'RhodeCode GmbH'

rhodecode/apps/repository/__init__.py

@@ -79,6 +79,10 b' def includeme(config):'
         pattern='/{repo_name:.*?[^/]}/changeset/{commit_id}/comment/preview', repo_route=True)
 
     config.add_route(
+        name='repo_commit_comment_history_view',
+        pattern='/{repo_name:.*?[^/]}/changeset/{commit_id}/comment/{comment_history_id}/history_view', repo_route=True)
+
+    config.add_route(
         name='repo_commit_comment_attachment_upload',
         pattern='/{repo_name:.*?[^/]}/changeset/{commit_id}/comment/attachment_upload', repo_route=True)
 
@@ -86,6 +90,10 b' def includeme(config):'
         name='repo_commit_comment_delete',
         pattern='/{repo_name:.*?[^/]}/changeset/{commit_id}/comment/{comment_id}/delete', repo_route=True)
 
+    config.add_route(
+        name='repo_commit_comment_edit',
+        pattern='/{repo_name:.*?[^/]}/changeset/{commit_id}/comment/{comment_id}/edit', repo_route=True)
+
     # still working url for backward compat.
     config.add_route(
         name='repo_commit_raw_deprecated',
@@ -328,6 +336,11 b' def includeme(config):'
         repo_route=True)
 
     config.add_route(
+        name='pullrequest_comment_edit',
+        pattern='/{repo_name:.*?[^/]}/pull-request/{pull_request_id:\d+}/comment/{comment_id}/edit',
+        repo_route=True, repo_accepted_types=['hg', 'git'])
+
+    config.add_route(
         name='pullrequest_comment_delete',
         pattern='/{repo_name:.*?[^/]}/pull-request/{pull_request_id:\d+}/comment/{comment_id}/delete',
         repo_route=True, repo_accepted_types=['hg', 'git'])

rhodecode/apps/repository/tests/test_repo_commit_comments.py

@@ -35,6 +35,7 b' def route_path(name, params=None, **kwar'
         'repo_commit_comment_create': '/{repo_name}/changeset/{commit_id}/comment/create',
         'repo_commit_comment_preview': '/{repo_name}/changeset/{commit_id}/comment/preview',
         'repo_commit_comment_delete': '/{repo_name}/changeset/{commit_id}/comment/{comment_id}/delete',
+        'repo_commit_comment_edit': '/{repo_name}/changeset/{commit_id}/comment/{comment_id}/edit',
     }[name].format(**kwargs)
 
     if params:
@@ -268,6 +269,164 b' class TestRepoCommitCommentsView(TestCon'
                        repo_name=backend.repo_name, commit_id=commit_id))
         assert_comment_links(response, 0, 0)
 
+    def test_edit(self, backend):
+        self.log_user()
+        commit_id = backend.repo.get_commit('300').raw_id
+        text = u'CommentOnCommit'
+
+        params = {'text': text, 'csrf_token': self.csrf_token}
+        self.app.post(
+            route_path(
+                'repo_commit_comment_create',
+                repo_name=backend.repo_name, commit_id=commit_id),
+            params=params)
+
+        comments = ChangesetComment.query().all()
+        assert len(comments) == 1
+        comment_id = comments[0].comment_id
+        test_text = 'test_text'
+        self.app.post(
+            route_path(
+                'repo_commit_comment_edit',
+                repo_name=backend.repo_name,
+                commit_id=commit_id,
+                comment_id=comment_id,
+            ),
+            params={
+                'csrf_token': self.csrf_token,
+                'text': test_text,
+                'version': '0',
+            })
+
+        text_form_db = ChangesetComment.query().filter(
+            ChangesetComment.comment_id == comment_id).first().text
+        assert test_text == text_form_db
+
+    def test_edit_without_change(self, backend):
+        self.log_user()
+        commit_id = backend.repo.get_commit('300').raw_id
+        text = u'CommentOnCommit'
+
+        params = {'text': text, 'csrf_token': self.csrf_token}
+        self.app.post(
+            route_path(
+                'repo_commit_comment_create',
+                repo_name=backend.repo_name, commit_id=commit_id),
+            params=params)
+
+        comments = ChangesetComment.query().all()
+        assert len(comments) == 1
+        comment_id = comments[0].comment_id
+
+        response = self.app.post(
+            route_path(
+                'repo_commit_comment_edit',
+                repo_name=backend.repo_name,
+                commit_id=commit_id,
+                comment_id=comment_id,
+            ),
+            params={
+                'csrf_token': self.csrf_token,
+                'text': text,
+                'version': '0',
+            },
+            status=404,
+        )
+        assert response.status_int == 404
+
+    def test_edit_try_edit_already_edited(self, backend):
+        self.log_user()
+        commit_id = backend.repo.get_commit('300').raw_id
+        text = u'CommentOnCommit'
+
+        params = {'text': text, 'csrf_token': self.csrf_token}
+        self.app.post(
+            route_path(
+                'repo_commit_comment_create',
+                repo_name=backend.repo_name, commit_id=commit_id
+            ),
+            params=params,
+        )
+
+        comments = ChangesetComment.query().all()
+        assert len(comments) == 1
+        comment_id = comments[0].comment_id
+        test_text = 'test_text'
+        self.app.post(
+            route_path(
+                'repo_commit_comment_edit',
+                repo_name=backend.repo_name,
+                commit_id=commit_id,
+                comment_id=comment_id,
+            ),
+            params={
+                'csrf_token': self.csrf_token,
+                'text': test_text,
+                'version': '0',
+            }
+        )
+        test_text_v2 = 'test_v2'
+        response = self.app.post(
+            route_path(
+                'repo_commit_comment_edit',
+                repo_name=backend.repo_name,
+                commit_id=commit_id,
+                comment_id=comment_id,
+            ),
+            params={
+                'csrf_token': self.csrf_token,
+                'text': test_text_v2,
+                'version': '0',
+            },
+            status=404,
+        )
+        assert response.status_int == 404
+
+        text_form_db = ChangesetComment.query().filter(
+            ChangesetComment.comment_id == comment_id).first().text
+
+        assert test_text == text_form_db
+        assert test_text_v2 != text_form_db
+
+    def test_edit_forbidden_for_immutable_comments(self, backend):
+        self.log_user()
+        commit_id = backend.repo.get_commit('300').raw_id
+        text = u'CommentOnCommit'
+
+        params = {'text': text, 'csrf_token': self.csrf_token, 'version': '0'}
+        self.app.post(
+            route_path(
+                'repo_commit_comment_create',
+                repo_name=backend.repo_name,
+                commit_id=commit_id,
+            ),
+            params=params
+        )
+
+        comments = ChangesetComment.query().all()
+        assert len(comments) == 1
+        comment_id = comments[0].comment_id
+
+        comment = ChangesetComment.get(comment_id)
+        comment.immutable_state = ChangesetComment.OP_IMMUTABLE
+        Session().add(comment)
+        Session().commit()
+
+        response = self.app.post(
+            route_path(
+                'repo_commit_comment_edit',
+                repo_name=backend.repo_name,
+                commit_id=commit_id,
+                comment_id=comment_id,
+            ),
+            params={
+                'csrf_token': self.csrf_token,
+                'text': 'test_text',
+            },
+            status=403,
+        )
+        assert response.status_int == 403
+
     def test_delete_forbidden_for_immutable_comments(self, backend):
         self.log_user()
         commit_id = backend.repo.get_commit('300').raw_id

rhodecode/apps/repository/tests/test_repo_pullrequests.py

@@ -30,6 +30,7 b' from rhodecode.model.db import ('
 from rhodecode.model.meta import Session
 from rhodecode.model.pull_request import PullRequestModel
 from rhodecode.model.user import UserModel
+from rhodecode.model.comment import CommentsModel
 from rhodecode.tests import (
     assert_session_flash, TEST_USER_ADMIN_LOGIN, TEST_USER_REGULAR_LOGIN)
 
@@ -54,6 +55,7 b' def route_path(name, params=None, **kwar'
         'pullrequest_delete': '/{repo_name}/pull-request/{pull_request_id}/delete',
         'pullrequest_comment_create': '/{repo_name}/pull-request/{pull_request_id}/comment',
         'pullrequest_comment_delete': '/{repo_name}/pull-request/{pull_request_id}/comment/{comment_id}/delete',
+        'pullrequest_comment_edit': '/{repo_name}/pull-request/{pull_request_id}/comment/{comment_id}/edit',
     }[name].format(**kwargs)
 
     if params:
@@ -355,6 +357,214 b' class TestPullrequestsView(object):'
             pull_request.source_repo, pull_request=pull_request)
         assert status == ChangesetStatus.STATUS_REJECTED
 
+    def test_comment_and_close_pull_request_try_edit_comment(
+            self, pr_util, csrf_token, xhr_header
+    ):
+        pull_request = pr_util.create_pull_request()
+        pull_request_id = pull_request.pull_request_id
+
+        response = self.app.post(
+            route_path(
+                'pullrequest_comment_create',
+                repo_name=pull_request.target_repo.scm_instance().name,
+                pull_request_id=pull_request.pull_request_id,
+            ),
+            params={
+                'close_pull_request': 'true',
+                'csrf_token': csrf_token,
+            },
+            extra_environ=xhr_header)
+
+        assert response.json
+
+        pull_request = PullRequest.get(pull_request_id)
+        assert pull_request.is_closed()
+
+        # check only the latest status, not the review status
+        status = ChangesetStatusModel().get_status(
+            pull_request.source_repo, pull_request=pull_request)
+        assert status == ChangesetStatus.STATUS_REJECTED
+
+        comment_id = response.json.get('comment_id', None)
+        test_text = 'test'
+        response = self.app.post(
+            route_path(
+                'pullrequest_comment_edit',
+                repo_name=pull_request.target_repo.scm_instance().name,
+                pull_request_id=pull_request.pull_request_id,
+                comment_id=comment_id,
+            ),
+            extra_environ=xhr_header,
+            params={
+                'csrf_token': csrf_token,
+                'text': test_text,
+            },
+            status=403,
+        )
+        assert response.status_int == 403
+
+    def test_comment_and_comment_edit(
+            self, pr_util, csrf_token, xhr_header
+    ):
+        pull_request = pr_util.create_pull_request()
+        response = self.app.post(
+            route_path(
+                'pullrequest_comment_create',
+                repo_name=pull_request.target_repo.scm_instance().name,
+                pull_request_id=pull_request.pull_request_id),
+            params={
+                'csrf_token': csrf_token,
+                'text': 'init',
+            },
+            extra_environ=xhr_header,
+        )
+        assert response.json
+
+        comment_id = response.json.get('comment_id', None)
+        assert comment_id
+        test_text = 'test'
+        self.app.post(
+            route_path(
+                'pullrequest_comment_edit',
+                repo_name=pull_request.target_repo.scm_instance().name,
+                pull_request_id=pull_request.pull_request_id,
+                comment_id=comment_id,
+            ),
+            extra_environ=xhr_header,
+            params={
+                'csrf_token': csrf_token,
+                'text': test_text,
+                'version': '0',
+            },
+
+        )
+        text_form_db = ChangesetComment.query().filter(
+            ChangesetComment.comment_id == comment_id).first().text
+        assert test_text == text_form_db
+
+    def test_comment_and_comment_edit(
+            self, pr_util, csrf_token, xhr_header
+    ):
+        pull_request = pr_util.create_pull_request()
+        response = self.app.post(
+            route_path(
+                'pullrequest_comment_create',
+                repo_name=pull_request.target_repo.scm_instance().name,
+                pull_request_id=pull_request.pull_request_id),
+            params={
+                'csrf_token': csrf_token,
+                'text': 'init',
+            },
+            extra_environ=xhr_header,
+        )
+        assert response.json
+
+        comment_id = response.json.get('comment_id', None)
+        assert comment_id
+        test_text = 'init'
+        response = self.app.post(
+            route_path(
+                'pullrequest_comment_edit',
+                repo_name=pull_request.target_repo.scm_instance().name,
+                pull_request_id=pull_request.pull_request_id,
+                comment_id=comment_id,
+            ),
+            extra_environ=xhr_header,
+            params={
+                'csrf_token': csrf_token,
+                'text': test_text,
+                'version': '0',
+            },
+            status=404,
+
+        )
+        assert response.status_int == 404
+
+    def test_comment_and_try_edit_already_edited(
+            self, pr_util, csrf_token, xhr_header
+    ):
+        pull_request = pr_util.create_pull_request()
+        response = self.app.post(
+            route_path(
+                'pullrequest_comment_create',
+                repo_name=pull_request.target_repo.scm_instance().name,
+                pull_request_id=pull_request.pull_request_id),
+            params={
+                'csrf_token': csrf_token,
+                'text': 'init',
+            },
+            extra_environ=xhr_header,
+        )
+        assert response.json
+        comment_id = response.json.get('comment_id', None)
+        assert comment_id
+        test_text = 'test'
+        response = self.app.post(
+            route_path(
+                'pullrequest_comment_edit',
+                repo_name=pull_request.target_repo.scm_instance().name,
+                pull_request_id=pull_request.pull_request_id,
+                comment_id=comment_id,
+            ),
+            extra_environ=xhr_header,
+            params={
+                'csrf_token': csrf_token,
+                'text': test_text,
+                'version': '0',
+            },
+
+        )
+        test_text_v2 = 'test_v2'
+        response = self.app.post(
+            route_path(
+                'pullrequest_comment_edit',
+                repo_name=pull_request.target_repo.scm_instance().name,
+                pull_request_id=pull_request.pull_request_id,
+                comment_id=comment_id,
+            ),
+            extra_environ=xhr_header,
+            params={
+                'csrf_token': csrf_token,
+                'text': test_text_v2,
+                'version': '0',
+            },
+            status=404,
+        )
+        assert response.status_int == 404
+
+        text_form_db = ChangesetComment.query().filter(
+            ChangesetComment.comment_id == comment_id).first().text
+
+        assert test_text == text_form_db
+        assert test_text_v2 != text_form_db
+
+    def test_comment_and_comment_edit_permissions_forbidden(
+            self, autologin_regular_user, user_regular, user_admin, pr_util,
+            csrf_token, xhr_header):
+        pull_request = pr_util.create_pull_request(
+            author=user_admin.username, enable_notifications=False)
+        comment = CommentsModel().create(
+            text='test',
+            repo=pull_request.target_repo.scm_instance().name,
+            user=user_admin,
+            pull_request=pull_request,
+        )
+        response = self.app.post(
+            route_path(
+                'pullrequest_comment_edit',
+                repo_name=pull_request.target_repo.scm_instance().name,
+                pull_request_id=pull_request.pull_request_id,
+                comment_id=comment.comment_id,
+            ),
+            extra_environ=xhr_header,
+            params={
+                'csrf_token': csrf_token,
+                'text': 'test_text',
+            },
+            status=403,
+        )
+        assert response.status_int == 403
+
     def test_create_pull_request(self, backend, csrf_token):
         commits = [
             {'message': 'ancestor'},

rhodecode/apps/repository/views/repo_commits.py

@@ -45,7 +45,8 b' from rhodecode.lib.utils2 import safe_un'
 from rhodecode.lib.vcs.backends.base import EmptyCommit
 from rhodecode.lib.vcs.exceptions import (
     RepositoryError, CommitDoesNotExistError)
-from rhodecode.model.db import ChangesetComment, ChangesetStatus, FileStore
+from rhodecode.model.db import ChangesetComment, ChangesetStatus, FileStore, \
+    ChangesetCommentHistory
 from rhodecode.model.changeset_status import ChangesetStatusModel
 from rhodecode.model.comment import CommentsModel
 from rhodecode.model.meta import Session
@@ -431,6 +432,27 b' class RepoCommitsView(RepoAppView):'
         'repository.read', 'repository.write', 'repository.admin')
     @CSRFRequired()
     @view_config(
+        route_name='repo_commit_comment_history_view', request_method='POST',
+        renderer='string', xhr=True)
+    def repo_commit_comment_history_view(self):
+        commit_id = self.request.matchdict['commit_id']
+        comment_history_id = self.request.matchdict['comment_history_id']
+        comment_history = ChangesetCommentHistory.get_or_404(comment_history_id)
+        c = self.load_default_context()
+        c.comment_history = comment_history
+
+        rendered_comment = render(
+            'rhodecode:templates/changeset/comment_history.mako',
+            self._get_template_context(c)
+            , self.request)
+        return rendered_comment
+
+    @LoginRequired()
+    @NotAnonymous()
+    @HasRepoPermissionAnyDecorator(
+        'repository.read', 'repository.write', 'repository.admin')
+    @CSRFRequired()
+    @view_config(
         route_name='repo_commit_comment_attachment_upload', request_method='POST',
         renderer='json_ext', xhr=True)
     def repo_commit_comment_attachment_upload(self):
@@ -558,6 +580,74 b' class RepoCommitsView(RepoAppView):'
             raise HTTPNotFound()
 
     @LoginRequired()
+    @NotAnonymous()
+    @HasRepoPermissionAnyDecorator(
+        'repository.read', 'repository.write', 'repository.admin')
+    @CSRFRequired()
+    @view_config(
+        route_name='repo_commit_comment_edit', request_method='POST',
+        renderer='json_ext')
+    def repo_commit_comment_edit(self):
+        commit_id = self.request.matchdict['commit_id']
+        comment_id = self.request.matchdict['comment_id']
+
+        comment = ChangesetComment.get_or_404(comment_id)
+
+        if comment.immutable:
+            # don't allow deleting comments that are immutable
+            raise HTTPForbidden()
+
+        is_repo_admin = h.HasRepoPermissionAny('repository.admin')(self.db_repo_name)
+        super_admin = h.HasPermissionAny('hg.admin')()
+        comment_owner = (comment.author.user_id == self._rhodecode_db_user.user_id)
+        is_repo_comment = comment.repo.repo_name == self.db_repo_name
+        comment_repo_admin = is_repo_admin and is_repo_comment
+
+        if super_admin or comment_owner or comment_repo_admin:
+            text = self.request.POST.get('text')
+            version = self.request.POST.get('version')
+            if text == comment.text:
+                log.warning(
+                    'Comment(repo): '
+                    'Trying to create new version '
+                    'of existing comment {}'.format(
+                        comment_id,
+                    )
+                )
+                raise HTTPNotFound()
+            if version.isdigit():
+                version = int(version)
+            else:
+                log.warning(
+                    'Comment(repo): Wrong version type {} {} '
+                    'for comment {}'.format(
+                        version,
+                        type(version),
+                        comment_id,
+                    )
+                )
+                raise HTTPNotFound()
+
+            comment_history = CommentsModel().edit(
+                comment_id=comment_id,
+                text=text,
+                auth_user=self._rhodecode_user,
+                version=version,
+            )
+            if not comment_history:
+                raise HTTPNotFound()
+            Session().commit()
+            return {
+                'comment_history_id': comment_history.comment_history_id,
+                'comment_id': comment.comment_id,
+                'comment_version': comment_history.version,
+            }
+        else:
+            log.warning('No permissions for user %s to edit comment_id: %s',
+                        self._rhodecode_db_user, comment_id)
+            raise HTTPNotFound()
+
+    @LoginRequired()
     @HasRepoPermissionAnyDecorator(
         'repository.read', 'repository.write', 'repository.admin')
     @view_config(

rhodecode/apps/repository/views/repo_pull_requests.py

@@ -1518,3 +1518,90 b' class RepoPullRequestsView(RepoAppView, '
             log.warning('No permissions for user %s to delete comment_id: %s',
                         self._rhodecode_db_user, comment_id)
             raise HTTPNotFound()
+
+    @LoginRequired()
+    @NotAnonymous()
+    @HasRepoPermissionAnyDecorator(
+        'repository.read', 'repository.write', 'repository.admin')
+    @CSRFRequired()
+    @view_config(
+        route_name='pullrequest_comment_edit', request_method='POST',
+        renderer='json_ext')
+    def pull_request_comment_edit(self):
+        pull_request = PullRequest.get_or_404(
+            self.request.matchdict['pull_request_id']
+        )
+        comment = ChangesetComment.get_or_404(
+            self.request.matchdict['comment_id']
+        )
+        comment_id = comment.comment_id
+
+        if comment.immutable:
+            # don't allow deleting comments that are immutable
+            raise HTTPForbidden()
+
+        if pull_request.is_closed():
+            log.debug('comment: forbidden because pull request is closed')
+            raise HTTPForbidden()
+
+        if not comment:
+            log.debug('Comment with id:%s not found, skipping', comment_id)
+            # comment already deleted in another call probably
+            return True
+
+        if comment.pull_request.is_closed():
+            # don't allow deleting comments on closed pull request
+            raise HTTPForbidden()
+
+        is_repo_admin = h.HasRepoPermissionAny('repository.admin')(self.db_repo_name)
+        super_admin = h.HasPermissionAny('hg.admin')()
+        comment_owner = comment.author.user_id == self._rhodecode_user.user_id
+        is_repo_comment = comment.repo.repo_name == self.db_repo_name
+        comment_repo_admin = is_repo_admin and is_repo_comment
+
+        if super_admin or comment_owner or comment_repo_admin:
+            text = self.request.POST.get('text')
+            version = self.request.POST.get('version')
+            if text == comment.text:
+                log.warning(
+                    'Comment(PR): '
+                    'Trying to create new version '
+                    'of existing comment {}'.format(
+                        comment_id,
+                    )
+                )
+                raise HTTPNotFound()
+            if version.isdigit():
+                version = int(version)
+            else:
+                log.warning(
+                    'Comment(PR): Wrong version type {} {} '
+                    'for comment {}'.format(
+                        version,
+                        type(version),
+                        comment_id,
+                    )
+                )
+                raise HTTPNotFound()
+
+            comment_history = CommentsModel().edit(
+                comment_id=comment_id,
+                text=text,
+                auth_user=self._rhodecode_user,
+                version=version,
+            )
+            if not comment_history:
+                raise HTTPNotFound()
+            Session().commit()
+            return {
+                'comment_history_id': comment_history.comment_history_id,
+                'comment_id': comment.comment_id,
+                'comment_version': comment_history.version,
+            }
+        else:
+            log.warning(
+                'No permissions for user {} to edit comment_id: {}'.format(
+                    self._rhodecode_db_user, comment_id
+                )
+            )
+            raise HTTPNotFound()

rhodecode/lib/audit_logger.py

@@ -82,6 +82,7 b' ACTIONS_V1 = {'
     'repo.pull_request.merge': '',
     'repo.pull_request.vote': '',
     'repo.pull_request.comment.create': '',
+    'repo.pull_request.comment.edit': '',
     'repo.pull_request.comment.delete': '',
 
     'repo.pull_request.reviewer.add': '',
@@ -90,6 +91,7 b' ACTIONS_V1 = {'
     'repo.commit.strip': {'commit_id': ''},
     'repo.commit.comment.create': {'data': {}},
     'repo.commit.comment.delete': {'data': {}},
+    'repo.commit.comment.edit': {'data': {}},
     'repo.commit.vote': '',
 
     'repo.artifact.add': '',

rhodecode/model/comment.py

@@ -35,7 +35,13 b' from rhodecode.lib import audit_logger'
 from rhodecode.lib.utils2 import extract_mentioned_users, safe_str
 from rhodecode.model import BaseModel
 from rhodecode.model.db import (
-    ChangesetComment, User, Notification, PullRequest, AttributeDict)
+    ChangesetComment,
+    User,
+    Notification,
+    PullRequest,
+    AttributeDict,
+    ChangesetCommentHistory,
+)
 from rhodecode.model.notification import NotificationModel
 from rhodecode.model.meta import Session
 from rhodecode.model.settings import VcsSettingsModel
@@ -479,6 +485,54 b' class CommentsModel(BaseModel):'
 
         return comment
 
+    def edit(self, comment_id, text, auth_user, version):
+        """
+        Change existing comment for commit or pull request.
+
+        :param comment_id:
+        :param text:
+        :param auth_user: current authenticated user calling this method
+        :param version: last comment version
+        """
+        if not text:
+            log.warning('Missing text for comment, skipping...')
+            return
+
+        comment = ChangesetComment.get(comment_id)
+        old_comment_text = comment.text
+        comment.text = text
+        comment_version = ChangesetCommentHistory.get_version(comment_id)
+        if (comment_version - version) != 1:
+            log.warning(
+                'Version mismatch, skipping... '
+                'version {} but should be {}'.format(
+                    (version - 1),
+                    comment_version,
+                )
+            )
+            return
+        comment_history = ChangesetCommentHistory()
+        comment_history.comment_id = comment_id
+        comment_history.version = comment_version
+        comment_history.created_by_user_id = auth_user.user_id
+        comment_history.text = old_comment_text
+        # TODO add email notification
+        Session().add(comment_history)
+        Session().add(comment)
+        Session().flush()
+
+        if comment.pull_request:
+            action = 'repo.pull_request.comment.edit'
+        else:
+            action = 'repo.commit.comment.edit'
+
+        comment_data = comment.get_api_data()
+        comment_data['old_comment_text'] = old_comment_text
+        self._log_audit_action(
+            action, {'data': comment_data}, auth_user, comment)
+
+        return comment_history
+
     def delete(self, comment, auth_user):
         """
         Deletes given comment
@@ -712,6 +766,7 b' class CommentsModel(BaseModel):'
             .filter(ChangesetComment.line_no == None)\
             .filter(ChangesetComment.f_path == None)\
             .filter(ChangesetComment.pull_request == pull_request)
+
         return comments
 
     @staticmethod

rhodecode/model/db.py

@@ -3755,6 +3755,7 b' class ChangesetComment(Base, BaseModel):'
     status_change = relationship('ChangesetStatus', cascade="all, delete-orphan", lazy='joined')
     pull_request = relationship('PullRequest', lazy='joined')
     pull_request_version = relationship('PullRequestVersion')
+    history = relationship('ChangesetCommentHistory', cascade='all, delete-orphan', lazy='joined', order_by='ChangesetCommentHistory.version')
 
     @classmethod
     def get_users(cls, revision=None, pull_request_id=None):
@@ -3849,6 +3850,36 b' class ChangesetComment(Base, BaseModel):'
         return data
 
 
+class ChangesetCommentHistory(Base, BaseModel):
+    __tablename__ = 'changeset_comments_history'
+    __table_args__ = (
+        Index('cch_comment_id_idx', 'comment_id'),
+        base_table_args,
+    )
+
+    comment_history_id = Column('comment_history_id', Integer(), nullable=False, primary_key=True)
+    comment_id = Column('comment_id', Integer(), ForeignKey('changeset_comments.comment_id'), nullable=False)
+    version = Column("version", Integer(), nullable=False, default=0)
+    created_by_user_id = Column('created_by_user_id', Integer(), ForeignKey('users.user_id'), nullable=False)
+    text = Column('text', UnicodeText().with_variant(UnicodeText(25000), 'mysql'), nullable=False)
+    created_on = Column('created_on', DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
+    deleted = Column('deleted', Boolean(), default=False)
+
+    author = relationship('User', lazy='joined')
+    comment = relationship('ChangesetComment', cascade="all, delete")
+
+    @classmethod
+    def get_version(cls, comment_id):
+        q = Session().query(ChangesetCommentHistory).filter(
+            ChangesetCommentHistory.comment_id == comment_id).order_by(ChangesetCommentHistory.version.desc())
+        if q.count() == 0:
+            return 1
+        elif q.count() >= q[0].version:
+            return q.count() + 1
+        else:
+            return q[0].version + 1
+
+
 class ChangesetStatus(Base, BaseModel):
     __tablename__ = 'changeset_statuses'
     __table_args__ = (

rhodecode/public/js/rhodecode/routes.js

@@ -185,8 +185,10 b' function registerRCRoutes() {'
     pyroutes.register('repo_commit_data', '/%(repo_name)s/changeset-data/%(commit_id)s', ['repo_name', 'commit_id']);
     pyroutes.register('repo_commit_comment_create', '/%(repo_name)s/changeset/%(commit_id)s/comment/create', ['repo_name', 'commit_id']);
     pyroutes.register('repo_commit_comment_preview', '/%(repo_name)s/changeset/%(commit_id)s/comment/preview', ['repo_name', 'commit_id']);
+    pyroutes.register('repo_commit_comment_history_view', '/%(repo_name)s/changeset/%(commit_id)s/comment/%(comment_history_id)s/history_view', ['repo_name', 'commit_id', 'comment_history_id']);
     pyroutes.register('repo_commit_comment_attachment_upload', '/%(repo_name)s/changeset/%(commit_id)s/comment/attachment_upload', ['repo_name', 'commit_id']);
     pyroutes.register('repo_commit_comment_delete', '/%(repo_name)s/changeset/%(commit_id)s/comment/%(comment_id)s/delete', ['repo_name', 'commit_id', 'comment_id']);
+    pyroutes.register('repo_commit_comment_edit', '/%(repo_name)s/changeset/%(commit_id)s/comment/%(comment_id)s/edit', ['repo_name', 'commit_id', 'comment_id']);
     pyroutes.register('repo_commit_raw_deprecated', '/%(repo_name)s/raw-changeset/%(commit_id)s', ['repo_name', 'commit_id']);
     pyroutes.register('repo_archivefile', '/%(repo_name)s/archive/%(fname)s', ['repo_name', 'fname']);
     pyroutes.register('repo_files_diff', '/%(repo_name)s/diff/%(f_path)s', ['repo_name', 'f_path']);
@@ -242,6 +244,7 b' function registerRCRoutes() {'
     pyroutes.register('pullrequest_merge', '/%(repo_name)s/pull-request/%(pull_request_id)s/merge', ['repo_name', 'pull_request_id']);
     pyroutes.register('pullrequest_delete', '/%(repo_name)s/pull-request/%(pull_request_id)s/delete', ['repo_name', 'pull_request_id']);
     pyroutes.register('pullrequest_comment_create', '/%(repo_name)s/pull-request/%(pull_request_id)s/comment', ['repo_name', 'pull_request_id']);
+    pyroutes.register('pullrequest_comment_edit', '/%(repo_name)s/pull-request/%(pull_request_id)s/comment/%(comment_id)s/edit', ['repo_name', 'pull_request_id', 'comment_id']);
     pyroutes.register('pullrequest_comment_delete', '/%(repo_name)s/pull-request/%(pull_request_id)s/comment/%(comment_id)s/delete', ['repo_name', 'pull_request_id', 'comment_id']);
     pyroutes.register('edit_repo', '/%(repo_name)s/settings', ['repo_name']);
     pyroutes.register('edit_repo_advanced', '/%(repo_name)s/settings/advanced', ['repo_name']);

rhodecode/public/js/src/rhodecode/comments.js

@@ -80,9 +80,10 b' var _submitAjaxPOST = function(url, post'
 })(function() {
     "use strict";
 
-    function CommentForm(formElement, commitId, pullRequestId, lineNo, initAutocompleteActions, resolvesCommentId) {
+    function CommentForm(formElement, commitId, pullRequestId, lineNo, initAutocompleteActions, resolvesCommentId, edit, comment_id) {
+
         if (!(this instanceof CommentForm)) {
-            return new CommentForm(formElement, commitId, pullRequestId, lineNo, initAutocompleteActions, resolvesCommentId);
+            return new CommentForm(formElement, commitId, pullRequestId, lineNo, initAutocompleteActions, resolvesCommentId, edit, comment_id);
         }
 
         // bind the element instance to our Form
@@ -126,10 +127,22 b' var _submitAjaxPOST = function(url, post'
         this.submitButton = $(this.submitForm).find('input[type="submit"]');
         this.submitButtonText = this.submitButton.val();
 
+
         this.previewUrl = pyroutes.url('repo_commit_comment_preview',
             {'repo_name': templateContext.repo_name,
              'commit_id': templateContext.commit_data.commit_id});
 
+        if (edit){
+            this.submitButtonText = _gettext('Updated Comment');
+            $(this.commentType).prop('disabled', true);
+            $(this.commentType).addClass('disabled');
+            var editInfo =
+                '<div class="comment-label note" id="comment-label-6" title="line: ">' +
+                'editing' +
+                '</div>';
+            $(editInfo).insertBefore($(this.editButton).parent());
+        }
+
         if (resolvesCommentId){
             this.resolvesId = '#resolve_comment_{0}'.format(resolvesCommentId);
             this.resolvesActionId = '#resolve_comment_action_{0}'.format(resolvesCommentId);
@@ -153,17 +166,27 b' var _submitAjaxPOST = function(url, post'
         // based on commitId, or pullRequestId decide where do we submit
         // out data
         if (this.commitId){
-            this.submitUrl = pyroutes.url('repo_commit_comment_create',
+            var pyurl = 'repo_commit_comment_create';
+            if(edit){
+                pyurl = 'repo_commit_comment_edit';
+            }
+            this.submitUrl = pyroutes.url(pyurl,
                 {'repo_name': templateContext.repo_name,
-                 'commit_id': this.commitId});
+                 'commit_id': this.commitId,
+                 'comment_id': comment_id});
             this.selfUrl = pyroutes.url('repo_commit',
                 {'repo_name': templateContext.repo_name,
                  'commit_id': this.commitId});
 
         } else if (this.pullRequestId) {
-            this.submitUrl = pyroutes.url('pullrequest_comment_create',
+            var pyurl = 'pullrequest_comment_create';
+            if(edit){
+                pyurl = 'pullrequest_comment_edit';
+            }
+            this.submitUrl = pyroutes.url(pyurl,
                 {'repo_name': templateContext.repo_name,
-                 'pull_request_id': this.pullRequestId});
+                 'pull_request_id': this.pullRequestId,
+                 'comment_id': comment_id});
             this.selfUrl = pyroutes.url('pullrequest_show',
                 {'repo_name': templateContext.repo_name,
                  'pull_request_id': this.pullRequestId});
@@ -277,7 +300,7 b' var _submitAjaxPOST = function(url, post'
         this.globalSubmitSuccessCallback = function(){
             // default behaviour is to call GLOBAL hook, if it's registered.
             if (window.commentFormGlobalSubmitSuccessCallback !== undefined){
-                commentFormGlobalSubmitSuccessCallback()
+                commentFormGlobalSubmitSuccessCallback();
             }
         };
 
@@ -482,11 +505,73 b' var CommentsController = function() {'
 
   this.cancelComment = function(node) {
       var $node = $(node);
-      var $td = $node.closest('td');
+      var edit = $(this).attr('edit');
+      if (edit) {
+          var $general_comments = null;
+          var $inline_comments = $node.closest('div.inline-comments');
+          if (!$inline_comments.length) {
+              $general_comments = $('#comments');
+              var $comment = $general_comments.parent().find('div.comment:hidden');
+              // show hidden general comment form
+              $('#cb-comment-general-form-placeholder').show();
+          } else {
+              var $comment = $inline_comments.find('div.comment:hidden');
+          }
+          $comment.show();
+      }
       $node.closest('.comment-inline-form').remove();
       return false;
   };
 
+   this.showVersion = function (node) {
+       var $node = $(node);
+       var selectedIndex = $node.context.selectedIndex;
+       var option = $node.find('option[value="'+ selectedIndex +'"]');
+       var zero_option = $node.find('option[value="0"]');
+       if (!option){
+           return;
+       }
+
+       // little trick to cheat onchange and allow to display the same version again
+       $node.context.selectedIndex = 0;
+       zero_option.text(selectedIndex);
+
+       var comment_history_id = option.attr('data-comment-history-id');
+       var comment_id = option.attr('data-comment-id');
+       var historyViewUrl = pyroutes.url(
+           'repo_commit_comment_history_view',
+           {
+               'repo_name': templateContext.repo_name,
+               'commit_id': comment_id,
+               'comment_history_id': comment_history_id,
+           }
+       );
+       successRenderCommit = function (data) {
+           Swal.fire({
+               html: data,
+               title: '',
+               showClass: {
+                   popup: 'swal2-noanimation',
+                   backdrop: 'swal2-noanimation'
+               },
+           });
+       };
+       failRenderCommit = function () {
+           Swal.fire({
+               html: 'Error while loading comment',
+               title: '',
+               showClass: {
+                   popup: 'swal2-noanimation',
+                   backdrop: 'swal2-noanimation'
+               },
+           });
+       };
+       _submitAjaxPOST(
+           historyViewUrl, {'csrf_token': CSRF_TOKEN}, successRenderCommit,
+           failRenderCommit
+       );
+   };
+
   this.getLineNumber = function(node) {
       var $node = $(node);
       var lineNo = $node.closest('td').attr('data-line-no');
@@ -638,12 +723,12 b' var CommentsController = function() {'
     $node.closest('tr').toggleClass('hide-line-comments');
   };
 
-  this.createCommentForm = function(formElement, lineno, placeholderText, initAutocompleteActions, resolvesCommentId){
+  this.createCommentForm = function(formElement, lineno, placeholderText, initAutocompleteActions, resolvesCommentId, edit, comment_id){
       var pullRequestId = templateContext.pull_request_data.pull_request_id;
       var commitId = templateContext.commit_data.commit_id;
 
       var commentForm = new CommentForm(
-          formElement, commitId, pullRequestId, lineno, initAutocompleteActions, resolvesCommentId);
+          formElement, commitId, pullRequestId, lineno, initAutocompleteActions, resolvesCommentId, edit, comment_id);
       var cm = commentForm.getCmInstance();
 
       if (resolvesCommentId){
@@ -780,18 +865,200 b' var CommentsController = function() {'
 
       var _form = $($form[0]);
       var autocompleteActions = ['approve', 'reject', 'as_note', 'as_todo'];
+      var edit = false;
+      var comment_id = null;
       var commentForm = this.createCommentForm(
-          _form, lineNo, placeholderText, autocompleteActions, resolvesCommentId);
+          _form, lineNo, placeholderText, autocompleteActions, resolvesCommentId, edit, comment_id);
       commentForm.initStatusChangeSelector();
 
       return commentForm;
   };
+  this.editComment = function(node) {
+      var $node = $(node);
+      var $comment = $(node).closest('.comment');
+      var comment_id = $comment.attr('data-comment-id');
+      var $form = null
 
+      var $comments = $node.closest('div.inline-comments');
+      var $general_comments = null;
+      var lineno = null;
+
+      if($comments.length){
+          // inline comments setup
+          $form = $comments.find('.comment-inline-form');
+          lineno = self.getLineNumber(node)
+      }
+      else{
+          // general comments setup
+          $comments = $('#comments');
+          $form = $comments.find('.comment-inline-form');
+          lineno = $comment[0].id
+          $('#cb-comment-general-form-placeholder').hide();
+      }
+
+      this.edit = true;
+
+      if (!$form.length) {
+
+          var $filediff = $node.closest('.filediff');
+          $filediff.removeClass('hide-comments');
+          var f_path = $filediff.attr('data-f-path');
+
+          // create a new HTML from template
+
+          var tmpl = $('#cb-comment-inline-form-template').html();
+          tmpl = tmpl.format(escapeHtml(f_path), lineno);
+          $form = $(tmpl);
+          $comment.after($form)
+
+          var _form = $($form[0]).find('form');
+          var autocompleteActions = ['as_note',];
+          var commentForm = this.createCommentForm(
+              _form, lineno, '', autocompleteActions, resolvesCommentId,
+              this.edit, comment_id);
+          var old_comment_text_binary = $comment.attr('data-comment-text');
+          var old_comment_text = b64DecodeUnicode(old_comment_text_binary);
+          commentForm.cm.setValue(old_comment_text);
+          $comment.hide();
+
+           $.Topic('/ui/plugins/code/comment_form_built').prepareOrPublish({
+               form: _form,
+               parent: $comments,
+               lineno: lineno,
+               f_path: f_path}
+           );
+           // set a CUSTOM submit handler for inline comments.
+            commentForm.setHandleFormSubmit(function(o) {
+              var text = commentForm.cm.getValue();
+              var commentType = commentForm.getCommentType();
+              var resolvesCommentId = commentForm.getResolvesId();
+
+              if (text === "") {
+                return;
+              }
+              if (old_comment_text == text) {
+                  Swal.fire({
+                      title: 'Error',
+                      html: _gettext('Comment body should be changed'),
+                      showClass: {
+                          popup: 'swal2-noanimation',
+                          backdrop: 'swal2-noanimation'
+                      },
+                  });
+                  return;
+              }
+              var excludeCancelBtn = false;
+              var submitEvent = true;
+              commentForm.setActionButtonsDisabled(true, excludeCancelBtn, submitEvent);
+              commentForm.cm.setOption("readOnly", true);
+              var dropDown = $('#comment_history_for_comment_'+comment_id);
+
+              var version = dropDown.children().last().val()
+              if(!version){
+                  version = 0;
+              }
+              var postData = {
+                  'text': text,
+                  'f_path': f_path,
+                  'line': lineno,
+                  'comment_type': commentType,
+                  'csrf_token': CSRF_TOKEN,
+                  'version': version,
+              };
+
+              var submitSuccessCallback = function(json_data) {
+                $form.remove();
+                $comment.show();
+                var postData = {
+                    'text': text,
+                    'renderer': $comment.attr('data-comment-renderer'),
+                    'csrf_token': CSRF_TOKEN
+                };
+
+                var updateCommentVersionDropDown = function () {
+                    var dropDown = $('#comment_history_for_comment_'+comment_id);
+                    $comment.attr('data-comment-text', btoa(text));
+                    var version = json_data['comment_version']
+                    var option = new Option(version, version);
+                    var $option = $(option);
+                    $option.attr('data-comment-history-id', json_data['comment_history_id']);
+                    $option.attr('data-comment-id', json_data['comment_id']);
+                    dropDown.append(option);
+                    dropDown.parent().show();
+                }
+                updateCommentVersionDropDown();
+                // by default we reset state of comment preserving the text
+                var failRenderCommit = function(jqXHR, textStatus, errorThrown) {
+                    var prefix = "Error while editing of comment.\n"
+                    var message = formatErrorMessage(jqXHR, textStatus, errorThrown, prefix);
+                    ajaxErrorSwal(message);
+
+                };
+                var successRenderCommit = function(o){
+                    $comment.show();
+                    $comment[0].lastElementChild.innerHTML = o;
+                }
+                var previewUrl = pyroutes.url('repo_commit_comment_preview',
+                {'repo_name': templateContext.repo_name,
+                'commit_id': templateContext.commit_data.commit_id});
+
+                _submitAjaxPOST(
+                    previewUrl, postData, successRenderCommit,
+                    failRenderCommit
+                );
+
+                try {
+                  var html = json_data.rendered_text;
+                  var lineno = json_data.line_no;
+                  var target_id = json_data.target_id;
+
+                  $comments.find('.cb-comment-add-button').before(html);
+
+                  //mark visually which comment was resolved
+                  if (resolvesCommentId) {
+                      commentForm.markCommentResolved(resolvesCommentId);
+                  }
+
+                 //  run global callback on submit
+                  commentForm.globalSubmitSuccessCallback();
+
+                } catch (e) {
+                  console.error(e);
+                }
+
+                // re trigger the linkification of next/prev navigation
+                linkifyComments($('.inline-comment-injected'));
+                timeagoActivate();
+                tooltipActivate();
+
+                if (window.updateSticky !== undefined) {
+                    // potentially our comments change the active window size, so we
+                    // notify sticky elements
+                    updateSticky()
+                }
+
+                commentForm.setActionButtonsDisabled(false);
+
+              };
+              var submitFailCallback = function(jqXHR, textStatus, errorThrown) {
+                  var prefix = "Error while editing comment.\n"
+                  var message = formatErrorMessage(jqXHR, textStatus, errorThrown, prefix);
+                  ajaxErrorSwal(message);
+                  commentForm.resetCommentFormState(text)
+              };
+              commentForm.submitAjaxPOST(
+                  commentForm.submitUrl, postData, submitSuccessCallback, submitFailCallback);
+            });
+      }
+
+      $form.addClass('comment-inline-form-open');
+  };
   this.createComment = function(node, resolutionComment) {
       var resolvesCommentId = resolutionComment || null;
       var $node = $(node);
       var $td = $node.closest('td');
       var $form = $td.find('.comment-inline-form');
+      this.edit = false;
 
       if (!$form.length) {
 
@@ -816,8 +1083,9 b' var CommentsController = function() {'
           var placeholderText = _gettext('Leave a comment on line {0}.').format(lineno);
           var _form = $($form[0]).find('form');
           var autocompleteActions = ['as_note', 'as_todo'];
+          var comment_id=null;
           var commentForm = this.createCommentForm(
-              _form, lineno, placeholderText, autocompleteActions, resolvesCommentId);
+              _form, lineno, placeholderText, autocompleteActions, resolvesCommentId, this.edit, comment_id);
 
           $.Topic('/ui/plugins/code/comment_form_built').prepareOrPublish({
               form: _form,

rhodecode/public/js/src/rhodecode/utils/string.js

@@ -182,3 +182,9 b' var htmlEnDeCode = (function() {'
     htmlDecode: htmlDecode
   };
 })();
+
+function b64DecodeUnicode(str) {
+    return decodeURIComponent(atob(str).split('').map(function (c) {
+        return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2);
+    }).join(''));
+}

rhodecode/templates/base/base.mako

@@ -1,11 +1,7 b''
 ## -*- coding: utf-8 -*-
 
 <%!
-    ## base64 filter e.g ${ example | base64 }
-    def base64(text):
-        import base64
-        from rhodecode.lib.helpers import safe_str
-        return base64.encodestring(safe_str(text))
+    from rhodecode.lib import html_filters
 %>
 
 <%inherit file="root.mako"/>

rhodecode/templates/changeset/changeset_file_comment.mako

@@ -3,8 +3,12 b''
 ## <%namespace name="comment" file="/changeset/changeset_file_comment.mako"/>
 ## ${comment.comment_block(comment)}
 ##
+
+<%!
+    from rhodecode.lib import html_filters
+%>
+
 <%namespace name="base" file="/base/base.mako"/>
-
 <%def name="comment_block(comment, inline=False, active_pattern_entries=None)">
   <% pr_index_ver = comment.get_index_version(getattr(c, 'versions', [])) %>
   <% latest_ver = len(getattr(c, 'versions', [])) %>
@@ -21,6 +25,8 b''
        line="${comment.line_no}"
        data-comment-id="${comment.comment_id}"
        data-comment-type="${comment.comment_type}"
+       data-comment-renderer="${comment.renderer}"
+       data-comment-text="${comment.text | html_filters.base64,n}"
        data-comment-line-no="${comment.line_no}"
        data-comment-inline=${h.json.dumps(inline)}
        style="${'display: none;' if outdated_at_ver else ''}">
@@ -60,6 +66,31 b''
           <div class="date">
               ${h.age_component(comment.modified_at, time_is_local=True)}
           </div>
+          % if comment.history:
+              <div class="date">
+                  <span class="comment-area-text">${_('Comment version')}:</span>
+                  <select class="comment-type" id="comment_history_for_comment_${comment.comment_id}"
+                          onchange="return Rhodecode.comments.showVersion(this)"
+                          name="comment_type">
+                      <option style="display: none" value="0">---</option>
+                      %for comment_history in comment.history:
+                          <option
+                                  data-comment-history-id="${comment_history.comment_history_id}",
+                                  data-comment-id="${comment.comment_id}",
+                                  value="${comment_history.version}">${comment_history.version}</option>
+                      %endfor
+                  </select>
+              </div>
+          % else:
+              <div class="date" style="display: none">
+                  <span class="comment-area-text">${_('Comment version')}</span>
+                  <select class="comment-type" id="comment_history_for_comment_${comment.comment_id}"
+                          onchange="return Rhodecode.comments.showVersion(this)"
+                          name="comment_type">
+                      <option style="display: none" value="0">---</option>
+                  </select>
+              </div>
+          %endif
           % if inline:
               <span></span>
           % else:
@@ -136,21 +167,29 b''
             %if not outdated_at_ver and (not comment.pull_request or (comment.pull_request and not comment.pull_request.is_closed())):
                ## permissions to delete
                %if comment.immutable is False and (c.is_super_admin or h.HasRepoPermissionAny('repository.admin')(c.repo_name) or comment.author.user_id == c.rhodecode_user.user_id):
-                  ## TODO: dan: add edit comment here
-                  <a onclick="return Rhodecode.comments.deleteComment(this);" class="delete-comment"> ${_('Delete')}</a>
+                    %if comment.comment_type == 'note':
+                       <a onclick="return Rhodecode.comments.editComment(this);"
+                          class="edit-comment"> ${_('Edit')}</a>
                %else:
-                  <button class="btn-link" disabled="disabled"> ${_('Delete')}</button>
+                        <button class="btn-link" disabled="disabled"> ${_('Edit')}</button>
+                    %endif
+                       | <a onclick="return Rhodecode.comments.deleteComment(this);"
+                          class="delete-comment"> ${_('Delete')}</a>
+               %else:
+                  <button class="btn-link" disabled="disabled"> ${_('Edit')}</button>
+                  | <button class="btn-link" disabled="disabled"> ${_('Delete')}</button>
                %endif
             %else:
-               <button class="btn-link" disabled="disabled"> ${_('Delete')}</button>
+               <button class="btn-link" disabled="disabled"> ${_('Edit')}</button>
+               | <button class="btn-link" disabled="disabled"> ${_('Delete')}</button>
             %endif
 
             % if outdated_at_ver:
-               | <a onclick="return Rhodecode.comments.prevOutdatedComment(this);" class="prev-comment"> ${_('Prev')}</a>
-               | <a onclick="return Rhodecode.comments.nextOutdatedComment(this);" class="next-comment"> ${_('Next')}</a>
+                | <a onclick="return Rhodecode.comments.prevOutdatedComment(this);" class="tooltip prev-comment" title="${_('Jump to the previous outdated comment')}"> <i class="icon-angle-left"></i> </a>
+                | <a onclick="return Rhodecode.comments.nextOutdatedComment(this);" class="tooltip next-comment" title="${_('Jump to the next outdated comment')}"> <i class="icon-angle-right"></i></a>
             % else:
-               | <a onclick="return Rhodecode.comments.prevComment(this);" class="prev-comment"> ${_('Prev')}</a>
-               | <a onclick="return Rhodecode.comments.nextComment(this);" class="next-comment"> ${_('Next')}</a>
+                | <a onclick="return Rhodecode.comments.prevComment(this);" class="tooltip prev-comment" title="${_('Jump to the previous comment')}"> <i class="icon-angle-left"></i></a>
+                | <a onclick="return Rhodecode.comments.nextComment(this);" class="tooltip next-comment" title="${_('Jump to the next comment')}"> <i class="icon-angle-right"></i></a>
             % endif
 
           </div>