AndyObtiva/glimmer-dsl-swt

# Copyright (c) 2007-2024 Andy Maleh
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

require 'glimmer/swt/swt_proxy'
require 'glimmer/swt/widget_proxy'
require 'glimmer/swt/display_proxy'
require 'glimmer/swt/proxy_properties'

module Glimmer
  module SWT
    # Proxy for org.eclipse.swt.widgets.Dialog superclass
    # of dialogs like FileDialog, DirectoryDialog, ColorDialog, and FontDialog
    #
    # (if you're seeking the `dialog` keyword, that's just a `shell` variation
    # under ShellProxy instead.
    #
    # Automatically uses the current shell if one is open.
    # Otherwise, it instantiates a new shell parent
    #
    # Optionally takes a shell as an argument
    #
    # Follows the Proxy Design Pattern
    class DialogProxy
      # TODO write rspec tests
      include ProxyProperties
      
      include_package 'org.eclipse.swt.widgets'
      include_package 'org.eclipse.swt.printing'
      
      class << self
        include_package 'org.eclipse.swt.widgets'
        include_package 'org.eclipse.swt.printing'
        
        def dialog_class(keyword)
          the_class = eval(keyword.camelcase(:upper))
          the_class if the_class.ancestors.include?(org.eclipse.swt.widgets.Dialog)
        rescue => e
          Glimmer::Config.logger.debug {"Dialog for keyword #{keyword} not found!"}
          Glimmer::Config.logger.debug { e.full_message }
          nil
        end
      end

      attr_reader :swt_dialog
      
      def initialize(keyword, *args, swt_dialog: nil)
        DisplayProxy.instance.auto_exec do
          dialog_class = self.class.dialog_class(keyword)
          if swt_dialog
            @swt_dialog = swt_dialog
          else
            style_args = args.select {|arg| arg.is_a?(Symbol) || arg.is_a?(String)}
            if style_args.any?
              style_arg_start_index = args.index(style_args.first)
              style_arg_last_index = args.index(style_args.last)
              args[style_arg_start_index..style_arg_last_index] = SWTProxy[style_args]
            end
            if args.first.respond_to?(:swt_widget) && args.first.swt_widget.is_a?(Shell)
              args[0] = args[0].swt_widget
            end
            if !args.first.is_a?(Shell)
              current_shell = DisplayProxy.instance.swt_display.shells.first
              args.unshift(current_shell.nil? ? ShellProxy.new : current_shell)
            end
            parent = args[0]
            @parent_proxy = parent.is_a?(Shell) ? ShellProxy.new(swt_widget: parent) : parent
            @swt_dialog = dialog_class.new(*args)
          end
        end
      end
      
      def proxy_source_object
        @swt_dialog
      end

    end
  end
end