Method: CDK::VIEWER#activate

Defined in:

lib/cdk/components/viewer.rb

#activate(actions) ⇒ Object

This function actually controls the viewer…

# File 'lib/cdk/components/viewer.rb', line 325

def activate(actions)
  refresh = false
  # Create the information about the file stats.
  file_info = [
      '</5>      </U>File Statistics<!U>     <!5>',
      '</5>                          <!5>',
      '</5/R>Character Count:<!R> %-4d     <!5>' % @characters,
      '</5/R>Line Count     :<!R> %-4d     <!5>' % @list_size,
      '</5>                          <!5>',
      '<C></5>Press Any Key To Continue.<!5>'
  ]

  temp_info = ['<C></5>Press Any Key To Continue.<!5>']

  # Set the current button.
  @current_button = 0

  # Draw the widget list.
  self.draw(@box)

  # Do this until KEY_ENTER is hit.
  while true
    # Reset the refresh flag.
    refresh = false

    input = self.getch([])
    if !self.checkBind(:VIEWER, input)
      case input
      when CDK::KEY_TAB
        if @button_count > 1
          if @current_button == @button_count - 1
            @current_button = 0
          else
            @current_button += 1
          end

          # Redraw the buttons.
          self.drawButtons
        end
      when CDK::PREV
        if @button_count > 1
          if @current_button == 0
            @current_button = @button_count - 1
          else
            @current_button -= 1
          end

          # Redraw the buttons.
          self.drawButtons
        end
      when Ncurses::KEY_UP
        if @current_top > 0
          @current_top -= 1
          refresh = true
        else
          CDK.Beep
        end
      when Ncurses::KEY_DOWN
        if @current_top < @max_top_line
          @current_top += 1
          refresh = true
        else
          CDK.Beep
        end
      when Ncurses::KEY_RIGHT
        if @left_char < @max_left_char
          @left_char += 1
          refresh = true
        else
          CDK.Beep
        end
      when Ncurses::KEY_LEFT
        if @left_char > 0
          @left_char -= 1
          refresh = true
        else
          CDK.Beep
        end
      when Ncurses::KEY_PPAGE
        if @current_top > 0
          if @current_top - (@view_size - 1) > 0
            @current_top = @current_top - (@view_size - 1)
          else
            @current_top = 0
          end
          refresh = true
        else
          CDK.Beep
        end
      when Ncurses::KEY_NPAGE
        if @current_top < @max_top_line
          if @current_top + @view_size < @max_top_line
            @current_top = @current_top + (@view_size - 1)
          else
            @current_top = @max_top_line
          end
          refresh = true
        else
          CDK.Beep
        end
      when Ncurses::KEY_HOME
        @left_char = 0
        refresh = true
      when Ncurses::KEY_END
        @left_char = @max_left_char
        refresh = true
      when 'g'.ord, '1'.ord, '<'.ord
        @current_top = 0
        refresh = true
      when 'G'.ord, '>'.ord
        @current_top = @max_top_line
        refresh = true
      when 'L'.ord
        x = (@list_size + @current_top) / 2
        if x < @max_top_line
          @current_top = x
          refresh = true
        else
          CDK.Beep
        end
      when 'l'.ord
        x = @current_top / 2
        if x >= 0
          @current_top = x
          refresh = true
        else
          CDK.Beep
        end
      when '?'.ord
        @search_direction = CDK::VIEWER::UP
        self.getAndStorePattern(@screen)
        if !self.searchForWord(@search_pattern, @search_direction)
          self.PatternNotFound(@search_pattern)
        end
        refresh = true
      when '/'.ord
        @search_direction = CDK::VIEWER:DOWN
        self.getAndStorePattern(@screen)
        if !self.searchForWord(@search_pattern, @search_direction)
          self.PatternNotFound(@search_pattern)
        end
        refresh = true
      when 'N'.ord, 'n'.ord
        if @search_pattern == ''
          temp_info[0] = '</5>There is no pattern in the buffer.<!5>'
          self.popUpLabel(temp_info)
        elsif !self.searchForWord(@search_pattern,
            if input == 'n'.ord
            then @search_direction
            else 1 - @search_direction
            end)
          self.PatternNotFound(@search_pattern)
        end
        refresh = true
      when ':'.ord
        @current_top = self.jumpToLine
        refresh = true
      when 'i'.ord, 's'.ord, 'S'.ord
        self.popUpLabel(file_info)
        refresh = true
      when CDK::KEY_ESC
        self.setExitType(input)
        return -1
      when Ncurses::ERR
        self.setExitType(input)
        return -1
      when Ncurses::KEY_ENTER, CDK::KEY_RETURN
        self.setExitType(input)
        return @current_button
      when CDK::REFRESH
        @screen.erase
        @screen.refresh
      else
        CDK.Beep
      end
    end

    # Do we need to redraw the screen?
    if refresh
      self.drawInfo
    end
  end
end