Update UserDataMultiDefault in order to simplify the method setValue and to fix a bug.

static/plugin_event/src/form/field/UserDataMultiDefault.js

@@ -238,19 +238,27 @@ Ext.define('Event.form.field.UserDataMultiDefault', {
 
         var me = this,
             combo = me.combo || null,
-            previousEvent = me.lastEvent,
-            undef = me.trUndefined,
-            cfg, form, formRecord, rawValue, record;
+            form = me.up('xform, form').getForm(),
+            cfg, formRecord, rawValue, record;
 
-        // link me to the ComboBox
-        // The comboBox field is identidied by its name, e.g HistororyId_events
+        // is the form ready
+        if (!form) {
+            return;
+        }
+
+        // linked the ComboBox
+        // It is identified by its name, e.g HistororyId_events
         if (!combo) {
-            form = me.up('xform, form').getForm();
-            if (!form) {
+            me.combo = form.findField(me.formFieldIdEvent);
+            if (!combo) {
                 return;
             }
-            me.combo = form.findField(me.formFieldIdEvent);
+        }
+
+        // check if the the select handler activated for the ComboBox
+        if (!combo.hasListener("select")) {
             me.combo.on('select', me.onComboBoxSelect, me);
+            return;
         }
 
         // protection
@@ -260,31 +268,22 @@ Ext.define('Event.form.field.UserDataMultiDefault', {
             return;
         }
 
-        formRecord = me.up('xform, form').getForm().getRecord();
-
-        // rather complicated logic to find the correct grid configuration
+        // NOTE ExtJS 6.2
         //
-        // NOTE ExtJS 6
-        // The ComboBox behave strangely in that configuration
-        // The method ComboBox.getValue() always return 1
-        // The property value and rawValue refer to was have been select previously
-        // Therefore a complexe logic is required to solve all case
+        // In order to retrieve the configuration for the event, it should be
+        // enough to extract the event selected in the ComboBox. However, the
+        // ComboBox behave strangely, since the method ComboBox.getValue()
+        // always return 1.
+        //
+        // In order to fix this issue, we get the full record loaded in the
+        // form, instead, and extract the selected event.
         //
-        if ((previousEvent === undef && rawValue === undef) || formRecord === undefined) {
-            me.lastKey = 1;
-            value = {};
-
-        } else if (previousEvent !== undefined && rawValue === undef) {
-            me.lastKey = 1;
-            value = {};
-
-        } else if (previousEvent === rawValue) {
-            me.lastKey = formRecord.get(me.formFieldIdEvent);
 
-        } else if (previousEvent === undefined && formRecord !== null) {
-            me.lastKey = formRecord.get(me.formFieldIdEvent);
+        // get the data load in the form
+        formRecord = form.getRecord();
 
-        } else if (previousEvent !== undefined && rawValue !== undefined) {
+        // get the selected event and retrieve its configuration
+        if (formRecord) {
             me.lastKey = formRecord.get(me.formFieldIdEvent);
 
         } else {
@@ -295,7 +294,7 @@ Ext.define('Event.form.field.UserDataMultiDefault', {
         record = me.store.findRecord(me.dictFieldIdEvent, me.lastKey);
         me.lastEvent = record.get(me.dictFieldEvent);
 
-        // build the configuration of the Ext.grid.property.Grid
+        // get the configuration for the Ext.grid.property.Grid
         cfg = me.buildSourceConfig(record);
 
         // fill the property grid