OpenProject is the leading open source project management software.
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openproject/lib/redmine/menu_manager/tree_node.rb

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#-- encoding: UTF-8
#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2014 the OpenProject Foundation (OPF)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2013 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# 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 General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# See doc/COPYRIGHT.rdoc for more details.
#++
require 'tree' # gem install rubytree
class Redmine::MenuManager::TreeNode < Tree::TreeNode
attr_reader :last_items_count
def initialize(name, content = nil)
@last_items_count = 0
super
end
# Adds the specified child node to the receiver node. The child node's
# parent is set to be the receiver. The child is added as the first child in
# the current list of children for the receiver node.
def prepend(child)
raise 'Child already added' if @children_hash.has_key?(child.name)
@children_hash[child.name] = child
@children = [child] + @children
child.parent = self
child
end
# Adds the specified child node to the receiver node. The child node's
# parent is set to be the receiver. The child is added at the position
# into the current list of children for the receiver node.
def add_at(child, position)
raise 'Child already added' if @children_hash.has_key?(child.name)
@children_hash[child.name] = child
@children = @children.insert(position, child)
child.parent = self
child
end
def add_last(child)
raise 'Child already added' if @children_hash.has_key?(child.name)
@children_hash[child.name] = child
@children << child
@last_items_count += 1
child.parent = self
child
end
# Adds the specified child node to the receiver node. The child node's
# parent is set to be the receiver. The child is added as the last child in
# the current list of children for the receiver node.
def add(child)
raise 'Child already added' if @children_hash.has_key?(child.name)
@children_hash[child.name] = child
position = @children.size - @last_items_count
@children.insert(position, child)
child.parent = self
child
end
# Wrapp remove! making sure to decrement the last_items counter if
# the removed child was a last item
def remove!(child)
@last_items_count -= +1 if child && child.last
super
end
# Will return the position (zero-based) of the current child in
# it's parent
def position
parent.children.index(self)
end
end