# Copyright 2010 Wincent Colaiuta. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
#    this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice,
#    this list of conditions and the following disclaimer in the documentation
#    and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# POSSIBILITY OF SUCH DAMAGE.

module CommandT
  # Convenience class for saving and restoring global settings.
  class Settings
    def initialize
      save
    end

    def save
      @timeoutlen     = get_number 'timeoutlen'
      @report         = get_number 'report'
      @sidescroll     = get_number 'sidescroll'
      @sidescrolloff  = get_number 'sidescrolloff'
      @equalalways    = get_bool 'equalalways'
      @hlsearch       = get_bool 'hlsearch'
      @insertmode     = get_bool 'insertmode'
      @showcmd        = get_bool 'showcmd'
    end

    def restore
      set_number 'timeoutlen', @timeoutlen
      set_number 'report', @report
      set_number 'sidescroll', @sidescroll
      set_number 'sidescrolloff', @sidescrolloff
      set_bool 'equalalways', @equalalways
      set_bool 'hlsearch', @hlsearch
      set_bool 'insertmode', @insertmode
      set_bool 'showcmd', @showcmd
    end

  private

    def get_number setting
      ::VIM::evaluate("&#{setting}").to_i
    end

    def get_bool setting
      ::VIM::evaluate("&#{setting}").to_i == 1
    end

    def set_number setting, value
      ::VIM::set_option "#{setting}=#{value}"
    end

    def set_bool setting, value
      if value
        ::VIM::set_option setting
      else
        ::VIM::set_option "no#{setting}"
      end
    end
  end # class Settings
end # module CommandT
