Add "migrate" Web UI plugin

This plugin creates and registers a facet with password migrate page.

Fixes: https://pagure.io/freeipa/issue/7641
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Petr Vobornik <pvoborni@redhat.com>
Reviewed-By: Serhii Tsymbaliuk <stsymbal@localhost.localdomain>

install/ui/src/freeipa/plugins/migrate.js

@@ -0,0 +1,72 @@
+//
+// Copyright (C) 2018  FreeIPA Contributors see COPYING for license
+//
+
+define([
+    'dojo/_base/declare',
+    'dojo/on',
+    '../facets/Facet',
+    '../phases',
+    '../reg',
+    '../text',
+    '../widget',
+    '../widgets/MigrateScreen'
+    ],
+    function(declare, on, Facet, phases, reg, text, widget, MigrateScreen) {
+
+        /**
+         * Migrate Facet plugin
+         *
+         * Creates and registers a facet with migrate page.
+         *
+         * @class plugins.migrate
+         * @singleton
+         */
+        var migrate = {};
+
+        migrate.facet_spec = {
+            name: 'migrate',
+            'class': 'login-pf-body',
+            preferred_container: 'simple',
+            requires_auth: false,
+            widgets: [
+                {
+                    $type: 'activity',
+                    name: 'activity',
+                    text: text.get('@i18n:migration.migrating', 'Migrating'),
+                    visible: false
+                },
+                {
+                    $type: 'migrate_screen',
+                    name: 'migrate_screen'
+                }
+            ]
+        };
+
+        migrate.MigrateFacet = declare([Facet], {
+            init: function() {
+                this.inherited(arguments);
+                var migrate_screen = this.get_widget('migrate_screen');
+                var self = this;
+
+                on(this, 'show', function(args) {
+                    migrate_screen.refresh();
+                });
+            }
+        });
+
+        phases.on('registration', function() {
+            var fa = reg.facet;
+            var w = reg.widget;
+
+            w.register('migrate_screen', MigrateScreen);
+
+            fa.register({
+                type: 'migrate',
+                factory: migrate.MigrateFacet,
+                spec: migrate.facet_spec
+            });
+        });
+
+        return migrate;
+    });