debian-mirror-gitlab/app/presenters/gitlab/blame_presenter.rb

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# frozen_string_literal: true
module Gitlab
class BlamePresenter < Gitlab::View::Presenter::Simple
include ActionView::Helpers::TranslationHelper
include ActionView::Context
include AvatarsHelper
include BlameHelper
include CommitsHelper
include ApplicationHelper
include TreeHelper
include IconsHelper
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presents nil, as: :blame
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CommitData = Struct.new(
:author_avatar,
:age_map_class,
:commit_link,
:commit_author_link,
:project_blame_link,
:time_ago_tooltip)
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def initialize(blame, **attributes)
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super
@commits = {}
precalculate_data_by_commit!
end
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def first_line
blame.first_line
end
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def groups
@groups ||= blame.groups
end
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def commit_data(commit, previous_path = nil)
@commits[commit.id] ||= get_commit_data(commit, previous_path)
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end
private
# Huge source files with a high churn rate (e.g. 'locale/gitlab.pot') could have
# 10x times more blame groups than unique commits across all the groups.
# That means we could cache per-commit data we need
# to avoid recalculating it multiple times.
# For such files, it could significantly improve the performance of the Blame.
def precalculate_data_by_commit!
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groups.each { |group| commit_data(group[:commit], group[:previous_path]) }
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end
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def get_commit_data(commit, previous_path = nil)
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CommitData.new.tap do |data|
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data.author_avatar = author_avatar(commit, size: 36, has_tooltip: false, lazy: true)
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data.age_map_class = age_map_class(commit.committed_date, project_duration)
data.commit_link = link_to commit.title, project_commit_path(project, commit.id), class: "cdark", title: commit.title
data.commit_author_link = commit_author_link(commit, avatar: false)
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data.project_blame_link = project_blame_link(commit, previous_path)
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data.time_ago_tooltip = time_ago_with_tooltip(commit.committed_date)
end
end
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def project_blame_link(commit, previous_path = nil)
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previous_commit_id = commit.parent_id
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return unless previous_commit_id && !previous_path.nil?
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link_to project_blame_path(project, tree_join(previous_commit_id, previous_path)),
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title: _('View blame prior to this change'),
aria: { label: _('View blame prior to this change') },
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class: 'version-link',
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data: { toggle: 'tooltip', placement: 'right', container: 'body' } do
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'&nbsp;'.html_safe
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end
end
def project_duration
@project_duration ||= age_map_duration(groups, project)
end
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def link_to(*args, &block)
ActionController::Base.helpers.link_to(*args, &block)
end
def mail_to(*args, &block)
ActionController::Base.helpers.mail_to(*args, &block)
end
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end
end