Lazy load database offer in data explorer (#208)

Co-authored-by: zfoster <notzachfoster@gmail.com>

src/Explorer/Panes/AddCollectionPane.ts

@@ -681,7 +681,7 @@ export default class AddCollectionPane extends ContextualPaneBase {
     return true;
   };
 
-  public open(databaseId?: string) {
+  public async open(databaseId?: string) {
     super.open();
     // TODO: Figure out if a database level partition split is about to happen once shared throughput read is available
     this.formWarnings("");
@@ -715,6 +715,7 @@ export default class AddCollectionPane extends ContextualPaneBase {
       dataExplorerArea: Constants.Areas.ContextualPane
     };
 
+    await this.container.loadDatabaseOffers();
     this._onDatabasesChange(this.container.databases());
     this._setFocus();
 
@@ -748,8 +749,6 @@ export default class AddCollectionPane extends ContextualPaneBase {
     const cachedDatabaseIdsList = _.map(newDatabaseIds, (database: ViewModels.Database) => {
       if (database && database.offer && database.offer()) {
         this._databaseOffers.set(database.id(), database.offer());
-      } else if (database && database.isDatabaseShared && database.isDatabaseShared()) {
-        database.readSettings();
       }
 
       return database.id();

src/Explorer/Panes/CassandraAddCollectionPane.ts

@@ -268,8 +268,6 @@ export default class CassandraAddCollectionPane extends ContextualPaneBase {
         const cachedKeyspaceIdsList = _.map(newKeyspaceIds, (keyspace: ViewModels.Database) => {
           if (keyspace && keyspace.offer && !!keyspace.offer()) {
             this.keyspaceOffers.set(keyspace.id(), keyspace.offer());
-          } else if (keyspace && keyspace.isDatabaseShared && keyspace.isDatabaseShared()) {
-            keyspace.readSettings();
           }
           return keyspace.id();
         });

src/Explorer/Panes/DeleteDatabaseConfirmationPane.ts

@@ -132,7 +132,8 @@ export default class DeleteDatabaseConfirmationPane extends ContextualPaneBase {
     super.resetData();
   }
 
-  public open() {
+  public async open() {
+    await this.container.loadSelectedDatabaseOffer();
     this.recordDeleteFeedback(this.shouldRecordFeedback());
     super.open();
   }