Isolate Stemweb calls into own controller; guard against server being down. #29

[scpubgit/stemmaweb.git] / root / js / componentload.js

diff --git a/root/js/componentload.js b/root/js/componentload.js
index 7551a86..06a8706 100644 (file)
--- a/root/js/componentload.js
+++ b/root/js/componentload.js
@@ -551,52 +551,58 @@ $(document).ready( function() {
                        // populate the form.
                        var algorithmTypes = {};
                        var algorithmArgs = {};
-                       $.each( stemwebAlgorithms, function( i, o ) {
-                               if( o.model === 'algorithms.algorithm' ) {
-                                       // it's an algorithm.
-                                       algorithmTypes[ o.pk ] = o.fields;
-                               } else if( o.model == 'algorithms.algorithmarg' && o.fields.external ) {
-                                       // it's an option for an algorithm that we should display.
-                                       algorithmArgs[ o.pk ] = o.fields;
-                               }
-                       });
-                       $.each( algorithmTypes, function( pk, fields ) {
-                               var algopt = $('<option>').attr( 'value', pk ).append( fields.name );
-                               $('#stemweb_algorithm').append( algopt );
-                       });
-                       // Set up the relevant options for whichever algorithm is chosen.
-                       // "key" -> form name, option ID "stemweb_$key_opt"
-                       // "name" -> form label
-                       $('#stemweb_algorithm').change( function() {
-                               var pk = $(this).val();
-                               $('#stemweb_runtime_options').empty();
-                               $.each( algorithmTypes[pk].args, function( i, apk ) {
-                                       var argInfo = algorithmArgs[apk];
-                                       if( argInfo ) {
-                                               // Make the element ID
-                                               var optId = 'stemweb_' + argInfo.key + '_opt';
-                                               // Make the label
-                                               var optLabel = $('<label>').attr( 'for', optId )
-                                                       .append( argInfo.name + ": " );
-                                               var optCtrl;
-                                               var argType = argInfo.value;
-                                               if( argType === 'positive_integer' ) {
-                                                       // Make it an input field of smallish size.
-                                                       optCtrl = $('<input>').attr( 'size', 4 );
-                                               } else if ( argType === 'boolean' ) {
-                                                       // Make it a checkbox.
-                                                       optCtrl = $('<checkbox>');
-                                               }
-                                               // Add the name and element ID
-                                               optCtrl.attr( 'name', argInfo.key ).attr( 'id', optId );
-                                               // Append the label and the option itself to the form.
-                                               $('#stemweb_runtime_options').append( optLabel )
-                                                       .append( optCtrl ).append( $('<br>') );
+                       var requrl = _get_url([ "stemweb", "available" ]);
+                       $.getJSON( requrl, function( data ) {
+                               $.each( data, function( i, o ) {
+                                       if( o.model === 'algorithms.algorithm' ) {
+                                               // it's an algorithm.
+                                               algorithmTypes[ o.pk ] = o.fields;
+                                       } else if( o.model == 'algorithms.algorithmarg' && o.fields.external ) {
+                                               // it's an option for an algorithm that we should display.
+                                               algorithmArgs[ o.pk ] = o.fields;
                                        }
                                });
+                               // TODO if it is an empty object, disable Stemweb entirely.
+                               if( !jQuery.isEmptyObject( algorithmTypes ) ) {
+                                       $.each( algorithmTypes, function( pk, fields ) {
+                                               var algopt = $('<option>').attr( 'value', pk ).append( fields.name );
+                                               $('#stemweb_algorithm').append( algopt );
+                                       });
+                                       // Set up the relevant options for whichever algorithm is chosen.
+                                       // "key" -> form name, option ID "stemweb_$key_opt"
+                                       // "name" -> form label
+                                       $('#stemweb_algorithm').change( function() {
+                                               var pk = $(this).val();
+                                               $('#stemweb_runtime_options').empty();
+                                               $.each( algorithmTypes[pk].args, function( i, apk ) {
+                                                       var argInfo = algorithmArgs[apk];
+                                                       if( argInfo ) {
+                                                               // Make the element ID
+                                                               var optId = 'stemweb_' + argInfo.key + '_opt';
+                                                               // Make the label
+                                                               var optLabel = $('<label>').attr( 'for', optId )
+                                                                       .append( argInfo.name + ": " );
+                                                               var optCtrl;
+                                                               var argType = argInfo.value;
+                                                               if( argType === 'positive_integer' ) {
+                                                                       // Make it an input field of smallish size.
+                                                                       optCtrl = $('<input>').attr( 'size', 4 );
+                                                               } else if ( argType === 'boolean' ) {
+                                                                       // Make it a checkbox.
+                                                                       optCtrl = $('<checkbox>');
+                                                               }
+                                                               // Add the name and element ID
+                                                               optCtrl.attr( 'name', argInfo.key ).attr( 'id', optId );
+                                                               // Append the label and the option itself to the form.
+                                                               $('#stemweb_runtime_options').append( optLabel )
+                                                                       .append( optCtrl ).append( $('<br>') );
+                                                       }
+                                               });
+                                       });
+                                       $('#stemweb_algorithm').change();
+                               }
                        });
                        // Prime the initial options
-                       $('#stemweb_algorithm').change();
                },
                open: function(evt) {
                        $('#stemweb_run_status').empty();