Class: SWS::FileUpload

Inherits:
FormElement show all
Defined in:
lib/sws/Core/components/FileUpload/FileUpload.rb

Overview

Represents a <INPUT type=file… field HTML tag. Bindings:

  • filename (settable) - name of the uploaded file

  • data (settable) - contents of the uploaded file

  • content_type (settable) - content type of the uploaded file

  • charset (settable) - charset of the uploaded file

  • disabled (default: false) - if true, the component will be rendered

inactive

  • other_tag_string - generic string to add to the HTML tag

Instance Attribute Summary

Attributes inherited from Component

#action_components, #definition_component, #encoding, #html_attrs, #method_to_call, #name, #parameters, #parent, #request, #request_number, #slots, #subcomponents, #tokens

Instance Method Summary collapse

Methods inherited from FormElement

#element_name

Methods inherited from Component

#api_filename, #app, #awake, #content?, create, #create_component_tree, #definition_filename, #initialize, #page, #perform_action, #process_parameters, #process_request, #remove_subcomponents, #session, #set_request_subcomponents, #sleep, #slot_bound?, #subcomponent_for_name, synchronize_slot, #synchronize_slot?, #synchronize_slots, #template_filename, #tokenize_binding, #update_binding, #url_string

Constructor Details

This class inherits a constructor from SWS::Component

Instance Method Details

#append_to_response(response) ⇒ Object 



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# File 'lib/sws/Core/components/FileUpload/FileUpload.rb', line 44

def append_to_response ( response )
	response << generate_html()
end

#container? ⇒ Boolean

This component cannot be a container, so this method returns false.

Returns:

  • (Boolean) 


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# File 'lib/sws/Core/components/FileUpload/FileUpload.rb', line 16

def container? ()
	return false
end

#generate_html ⇒ Object 



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# File 'lib/sws/Core/components/FileUpload/FileUpload.rb', line 49

def generate_html ()

	string = "<INPUT type=\"file\" name=\"#{element_name()}.file_data\""
	if ( slot_bound?( "disabled" ) && @slots["disabled"].value() == true )
		string << " disabled"
	end
	string << generic_attr_string() << ">"
	return string

end

#process_bindings ⇒ Object 



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# File 'lib/sws/Core/components/FileUpload/FileUpload.rb', line 21

def process_bindings ()

	file_data = @parameters["file_data"]
	
	if ( file_data )
		
		if ( file_data.is_a?( FileData ) )
			if ( slot_bound?( "data" ) ) then @slots["data"].value = file_data.contents end
			# .sub is a workaround for stupid IE behaviour (sending FULL filename
			# path, so the application developer knows exactly where on your disk
			# you took the file from)
			if ( slot_bound?( "filename" ) ) then @slots["filename"].value = file_data.filename.sub( /^.*\\/,"" ) end
			if ( slot_bound?( "content_type" ) ) then @slots["content_type"].value = file_data.content_type end
			if ( slot_bound?( "charset" ) ) then @slots["charset"].value = file_data.charset end
		elsif ( file_data.is_a?( ::String ) )
			@slots["filename"].value = file_data
		end
		
	end
	
end