Add multiple source fields

data/core.yaml

@@ -2542,6 +2542,8 @@ en:
         terms: copyleft, copyright
       source:
         label: Source
+      source_multiple:
+        label: Source {index}
     presets:
       type/chronology:
         name: Chronology

modules/presets/field.js

@@ -10,6 +10,12 @@ export function presetField(fieldID, field, allFields) {
   allFields = allFields || {};
   let _this = Object.assign({}, field);   // shallow copy
 
+  // This handles fields that are composed of a base key and an index, like 'source:1'
+  let localizerFieldID = fieldID;
+  if (field.baseKey && field.index){
+    localizerFieldID = field.baseKey + '_multiple';
+  }
+
   _this.id = fieldID;
 
   // for use in classes, element ids, css selectors
@@ -21,14 +27,14 @@ export function presetField(fieldID, field, allFields) {
     return !_this.geometry || geometries.every(geom => _this.geometry.indexOf(geom) !== -1);
   };
 
-  _this.t = (scope, options) => t(localizer.coalesceStringIds([`custom_presets.fields.${fieldID}.${scope}`,
-                                                               `_tagging.presets.fields.${fieldID}.${scope}`]), options);
-  _this.t.html = (scope, options) => t.html(localizer.coalesceStringIds([`custom_presets.fields.${fieldID}.${scope}`,
-                                                                         `_tagging.presets.fields.${fieldID}.${scope}`]), options);
-  _this.t.append = (scope, options) => t.append(localizer.coalesceStringIds([`custom_presets.fields.${fieldID}.${scope}`,
-                                                                             `_tagging.presets.fields.${fieldID}.${scope}`]), options);
-  _this.hasTextForStringId = (scope) => localizer.hasTextForStringId(`custom_presets.fields.${fieldID}.${scope}`) ||
-    localizer.hasTextForStringId(`_tagging.presets.fields.${fieldID}.${scope}`);
+  _this.t = (scope, options) => t(localizer.coalesceStringIds([`custom_presets.fields.${localizerFieldID}.${scope}`,
+                                                               `_tagging.presets.fields.${localizerFieldID}.${scope}`]), options);
+  _this.t.html = (scope, options) => t.html(localizer.coalesceStringIds([`custom_presets.fields.${localizerFieldID}.${scope}`,
+                                                                         `_tagging.presets.fields.${localizerFieldID}.${scope}`]), options);
+  _this.t.append = (scope, options) => t.append(localizer.coalesceStringIds([`custom_presets.fields.${localizerFieldID}.${scope}`,
+                                                                             `_tagging.presets.fields.${localizerFieldID}.${scope}`]), options);
+  _this.hasTextForStringId = (scope) => localizer.hasTextForStringId(`custom_presets.fields.${localizerFieldID}.${scope}`) ||
+    localizer.hasTextForStringId(`_tagging.presets.fields.${localizerFieldID}.${scope}`);
 
   _this.resolveReference = which => {
     const referenceRegex = /^\{(.*)\}$/;
@@ -43,10 +49,10 @@ export function presetField(fieldID, field, allFields) {
     return _this;
   };
 
-  _this.title = () => _this.overrideLabel || _this.resolveReference('label').t('label', { 'default': fieldID });
+  _this.title = () => _this.overrideLabel || _this.resolveReference('label').t('label', { 'default': fieldID, 'index': field.index });
   _this.label = () => _this.overrideLabel ?
       selection => selection.text(_this.overrideLabel) :
-      _this.resolveReference('label').t.append('label', { 'default': fieldID });
+      _this.resolveReference('label').t.append('label', { 'default': fieldID, 'index': field.index });
 
   _this.placeholder = () => _this.resolveReference('placeholder').t('placeholder', { 'default': '' });
 

modules/presets/index.js

@@ -60,6 +60,24 @@ function addHistoricalFields(fields) {
     fields.source.type = 'source';
     fields.source.source = false;
     fields.source.keys = ['source', 'source:url', 'source:name', 'source:date'];
+
+    for (let i = 1; i < 4; i++){
+        let id = 'source:' + i.toString();
+        let previousId = 'source' + ((i-1) > 0 ? ':' + (i-1).toString() : '');
+        fields[id] = {
+            ...fields.source,
+            key: id,
+            keys: [id, id + ':url', id + ':name', id + ':date'],
+            // baseKey and index will be used to create a localized label for this field
+            baseKey: 'source',
+            index: i,
+            prerequisiteTag: {
+                keys: [
+                    previousId,
+                    previousId + ':url',
+                    previousId + ':name',
+                    previousId + ':date']}};
+    }
   }
 
   fields.license = {

modules/ui/field.js

@@ -216,6 +216,10 @@ export function uiField(context, presetField, entityIDs, options) {
                         referenceKey = referenceKey.replace(/:$/, '');
                     }
 
+                    if (d.type === 'source') {   // lookup key without the trailing ':'
+                        referenceKey = referenceKey.split(':')[0];
+                    }
+
                     var referenceOptions = d.reference || {
                         key: referenceKey,
                         value: _tags[referenceKey]
@@ -350,6 +354,12 @@ export function uiField(context, presetField, entityIDs, options) {
 
             if (!entityIDs.every(function(entityID) {
                 var entity = context.graph().entity(entityID);
+                if (prerequisiteTag.keys) {
+                    // Return true if any key in prerequisiteTag.keys is present, return false otherwise
+                    // If prerequisiteTag.keys is present, prerequisiteTag.key will be ignored
+                    const inEntityTags = (e) => e in entity.tags;
+                    return prerequisiteTag.keys.some(inEntityTags);
+                }
                 if (prerequisiteTag.key) {
                     var value = entity.tags[prerequisiteTag.key];
                     if (!value) return false;

modules/ui/fields/sources.js

@@ -11,7 +11,7 @@ export function uiFieldSources(field, context) {
     let _selection = d3_select(null);
     let _pendingChange;
 
-    const mainKey = 'source';
+    const mainKey = field.key;
     const sourceHeader = mainKey + ':';
 
     // Pre-selected subkeys to show
@@ -130,5 +130,10 @@ export function uiFieldSources(field, context) {
         _selection.call(sources);
     };
 
+    sources.focus = function() {
+        var node = _selection.selectAll('input').node();
+        if (node) node.focus();
+    };
+
     return utilRebind(sources, dispatch, 'on');
 }

modules/ui/sections/preset_fields.js

@@ -78,8 +78,17 @@ export function uiSectionPresetFields(context) {
                 }
             });
 
+            let optionalCoreKeys = ['source:1', 'source:2', 'source:3'];
+            optionalCoreKeys.forEach(key => {
+                let field = presetsManager.field(key);
+                if (field && !_fieldsArr.includes(field)) {
+                    _fieldsArr.push(uiField(context, field, _entityIDs, { show: false }));
+                }
+            });
+
+
             sharedFields.forEach(function(field) {
-                if (!coreKeys.includes(field.id) && field.matchAllGeometry(geometries)) {
+                if (!coreKeys.includes(field.id) && !optionalCoreKeys.includes(field.id) && field.matchAllGeometry(geometries)) {
                     _fieldsArr.push(
                         uiField(context, field, _entityIDs)
                     );
@@ -101,6 +110,7 @@ export function uiSectionPresetFields(context) {
             additionalFields.forEach(function(field) {
                 if (sharedFields.indexOf(field) === -1 &&
                     !coreKeys.includes(field.id) &&
+                    !optionalCoreKeys.includes(field.id) &&
                     field.matchAllGeometry(geometries)) {
                     _fieldsArr.push(
                         uiField(context, field, _entityIDs, { show: false })