(core) Document keeps track of latest cursor position and latest editor value and is able to restore them when it is reloaded.

Summary: Grist document, when reloaded, is able to restore the latest cursor position and the editor state.

Test Plan: Browser test were created.

Reviewers: dsagal

Reviewed By: dsagal

Subscribers: paulfitz

Differential Revision: https://phab.getgrist.com/D2808

test/nbrowser/gristUtils.ts

@@ -342,6 +342,14 @@ export async function resizeColumn(colOptions: IColHeader, deltaPx: number) {
   await waitForServer();
 }
 
+/**
+ * Performs dbClick
+ * @param cell Element to click
+ */
+export async function dbClick(cell: WebElement) {
+  await driver.withActions(a => a.doubleClick(cell));
+}
+
 /**
  * Returns {rowNum, col} object representing the position of the cursor in the active view
  * section. RowNum is a 1-based number as in the row headers, and col is a 0-based index for
@@ -411,6 +419,14 @@ export async function enterFormula(formula: string) {
   await waitForServer();
 }
 
+/**
+ * Check that formula editor is shown and its value matches the given regexp.
+ */
+export async function getFormulaText() {
+  assert.equal(await driver.findWait('.test-formula-editor', 500).isDisplayed(), true);
+  return await driver.find('.code_editor_container').getText();
+}
+
 /**
  * Check that formula editor is shown and its value matches the given regexp.
  */
@@ -1311,6 +1327,20 @@ export class Session {
     return doc;
   }
 
+  // As for importFixturesDoc, but delete the document at the end of each test.
+  public async tempShortDoc(cleanup: Cleanup, fileName: string, options: ImportOpts = {load: true}) {
+    const doc = await this.importFixturesDoc(fileName, options);
+    const api = this.createHomeApi();
+    if (!noCleanup) {
+      cleanup.addAfterEach(async () => {
+        if (doc.id)
+          await api.deleteDoc(doc.id).catch(noop);
+        doc.id = '';
+      });
+    }
+    return doc;
+  }
+
   public async tempNewDoc(cleanup: Cleanup, docName: string, {load} = {load: true}) {
     const docId = await createNewDoc(this.settings.name, this.settings.org, this.settings.workspace, docName,
                                      {email: this.settings.email});