paulb@31 | 1 | #!/usr/bin/env python |
paulb@31 | 2 | |
paulb@31 | 3 | "A WebStack questionnaire application." |
paulb@31 | 4 | |
paulb@31 | 5 | import WebStack.Generic |
paulb@353 | 6 | import XSLForms.Resources.WebResources |
paulb@90 | 7 | import XSLForms.Utils |
paulb@31 | 8 | import os |
paulb@31 | 9 | |
paulb@102 | 10 | # Site map imports. |
paulb@102 | 11 | |
paulb@102 | 12 | from WebStack.Resources.ResourceMap import MapResource |
paulb@560 | 13 | from WebStack.Resources.Selectors import EncodingSelector |
paulb@102 | 14 | from WebStack.Resources.Static import DirectoryResource |
paulb@102 | 15 | |
paulb@560 | 16 | # Configuration settings. |
paulb@560 | 17 | |
paulb@560 | 18 | encoding = "utf-8" |
paulb@560 | 19 | |
paulb@102 | 20 | # Resource classes. |
paulb@102 | 21 | |
paulb@353 | 22 | class QuestionnaireEditorResource(XSLForms.Resources.WebResources.XSLFormsResource): |
paulb@31 | 23 | |
paulb@31 | 24 | "A resource providing a questionnaire editor." |
paulb@31 | 25 | |
paulb@31 | 26 | resource_dir = os.path.join(os.path.split(__file__)[0], "Resources") |
paulb@90 | 27 | template_resources = { |
paulb@90 | 28 | "question" : ("question_template.xhtml", "question_output.xsl") |
paulb@90 | 29 | } |
paulb@31 | 30 | |
paulb@90 | 31 | def respond_to_form(self, trans, form): |
paulb@31 | 32 | |
paulb@90 | 33 | """ |
paulb@90 | 34 | Respond to a request having the given transaction 'trans' and the given |
paulb@90 | 35 | 'form' information. |
paulb@90 | 36 | """ |
paulb@31 | 37 | |
paulb@90 | 38 | parameters = form.get_parameters() |
paulb@90 | 39 | documents = form.get_documents() |
paulb@90 | 40 | selectors = form.get_selectors() |
paulb@31 | 41 | |
paulb@31 | 42 | # Ensure the presence of a document. |
paulb@31 | 43 | |
paulb@31 | 44 | if documents.has_key("questionnaire"): |
paulb@31 | 45 | questionnaire = documents["questionnaire"] |
paulb@31 | 46 | else: |
paulb@90 | 47 | questionnaire = form.new_instance("questionnaire") |
paulb@31 | 48 | |
paulb@31 | 49 | # Add and remove elements according to the selectors found. |
paulb@31 | 50 | |
paulb@90 | 51 | XSLForms.Utils.remove_elements(selectors.get("remove-question")) |
paulb@90 | 52 | XSLForms.Utils.add_elements(selectors.get("add-choice"), "choice") |
paulb@90 | 53 | XSLForms.Utils.remove_elements(selectors.get("remove-choice")) |
paulb@31 | 54 | |
paulb@31 | 55 | # Add questions using the normal request parameter. |
paulb@31 | 56 | |
paulb@31 | 57 | if parameters.has_key("add-question"): |
paulb@31 | 58 | new_question = questionnaire.ownerDocument.createElementNS(None, "question") |
paulb@31 | 59 | questionnaire.xpath("questionnaire")[0].appendChild(new_question) |
paulb@31 | 60 | |
paulb@31 | 61 | # Send a response according to certain parameters. |
paulb@31 | 62 | # When exported, an XML version of the data is returned. |
paulb@31 | 63 | |
paulb@31 | 64 | if parameters.has_key("export"): |
paulb@560 | 65 | trans.set_content_type(WebStack.Generic.ContentType("text/xml", encoding)) |
paulb@90 | 66 | questionnaire.toStream(trans.get_response_stream(), trans.get_response_stream_encoding()) |
paulb@31 | 67 | |
paulb@31 | 68 | # When not exported, the data is transformed to produce a normal Web |
paulb@31 | 69 | # page. |
paulb@31 | 70 | |
paulb@31 | 71 | else: |
paulb@31 | 72 | |
paulb@31 | 73 | # Start the response. |
paulb@31 | 74 | |
paulb@560 | 75 | trans.set_content_type(WebStack.Generic.ContentType("application/xhtml+xml", encoding)) |
paulb@31 | 76 | |
paulb@31 | 77 | # Ensure that an output stylesheet exists. |
paulb@31 | 78 | |
paulb@90 | 79 | trans_xsl = self.prepare_output("question") |
paulb@31 | 80 | |
paulb@31 | 81 | # Complete the response. |
paulb@31 | 82 | |
paulb@90 | 83 | self.send_output(trans, [trans_xsl], questionnaire) |
paulb@31 | 84 | |
paulb@102 | 85 | # Site map initialisation. |
paulb@102 | 86 | |
paulb@102 | 87 | def get_site(): |
paulb@102 | 88 | |
paulb@102 | 89 | "Return a simple Web site resource." |
paulb@102 | 90 | |
paulb@102 | 91 | # Get the main resource and the directory used by the application. |
paulb@102 | 92 | |
paulb@102 | 93 | questionnaire_resource = QuestionnaireEditorResource() |
paulb@102 | 94 | directory = questionnaire_resource.resource_dir |
paulb@102 | 95 | |
paulb@102 | 96 | # Make a simple Web site. |
paulb@102 | 97 | |
paulb@102 | 98 | resource = MapResource({ |
paulb@102 | 99 | # Static resources: |
paulb@102 | 100 | "styles" : DirectoryResource(os.path.join(directory, "styles"), {"css" : "text/css"}), |
paulb@102 | 101 | # Main page: |
paulb@102 | 102 | "" : questionnaire_resource |
paulb@102 | 103 | }) |
paulb@102 | 104 | |
paulb@560 | 105 | return EncodingSelector(resource, encoding) |
paulb@102 | 106 | |
paulb@514 | 107 | # Resource preparation ahead of time - useful for making installations. |
paulb@514 | 108 | |
paulb@514 | 109 | def prepare_resources(): |
paulb@514 | 110 | for cls in [QuestionnaireEditorResource]: |
paulb@514 | 111 | XSLForms.Resources.WebResources.prepare_resources(cls) |
paulb@514 | 112 | |
paulb@31 | 113 | # vim: tabstop=4 expandtab shiftwidth=4 |