svn/view/buffer_manager.rb

# buffer.rb: the class definition of Edmaru::BufferManager
#
# Copyright (C) 2007 Takashi Nakamoto
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 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 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.
#

require "buffer.rb"

module Edmaru
  
  #The controller to manage multiple buffers.
  class BufferManager

    #Create the buffer manager.
    #
    #=== Return
    #An initialized manager.
    def initialize
      @buffers = Hash.new
    end

    #Create a new buffer by specified name.
    #
    #=== Argument
    #_name_ :: the buffer name
    #
    #=== Return
    #_true_ if a new buffer is created successfully.
    #
    #=== Note
    #This method returns if the specified _name_ is already used.
    def create(name)
      if @buffers.include?(name)
        return false
      end

      @buffers[name] = Buffer.new(name)
    end

    #Return the specified buffer.
    #
    #=== Return
    #The buffer instance whose name is the specified _name_ or _nil_
    #if the specified _name_ is not used.
    def get(name)
      if @buffers.include?(name)
        return @buffers[name]
      else
        return nil
      end
    end

  end
end