svn/view/buffer_manager.rb


require "buffer"

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