[iOS] Upstream autofill component code

components/autofill/ios/browser/js_suggestion_manager.h

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_AUTOFILL_IOS_BROWSER_JS_SUGGESTION_MANAGER_H_
+#define COMPONENTS_AUTOFILL_IOS_BROWSER_JS_SUGGESTION_MANAGER_H_
+
+#import "ios/web/public/web_state/js/crw_js_injection_manager.h"
+
+@class CRWJSInjectionReceiver;
+
+// Loads the JavaScript file, suggestion_manager.js, which contains form parsing
+// and autofill functions.
+@interface JsSuggestionManager : CRWJSInjectionManager
+
+// Focuses the next focusable element in tab order. No action if there is no
+// such element.
+- (void)selectNextElement;
+
+// Focuses the next focusable element in tab order after the element specified
+// by |formName| and |fieldName|. No action if there is no such element.
+- (void)selectElementAfterForm:(NSString*)formName field:(NSString*)fieldName;
+
+// Focuses the previous focusable element in tab order. No action if there is
+// no such element.
+- (void)selectPreviousElement;
+
+// Focuses the previous focusable element in tab order from the element
+// specified by |formName| and |fieldName|. No action if there is no such
+// element.
+- (void)selectElementBeforeForm:(NSString*)formName field:(NSString*)fieldName;
+
+// Injects JS to check if the page contains a next and previous element.
+// |completionHandler| is called with 2 BOOLs, the first indicating if a
+// previous element was found, and the second indicating if a next element was
+// found. |completionHandler| cannot be nil.
+- (void)fetchPreviousAndNextElementsPresenceWithCompletionHandler:
+        (void (^)(BOOL, BOOL))completionHandler;
+
+// Injects JS to check if the page contains a next and previous element
+// starting from the field specified by |formName| and |fieldName|.
+// |completionHandler| is called with 2 BOOLs, the first indicating if a
+// previous element was found, and the second indicating if a next element was
+// found. |completionHandler| cannot be nil.
+- (void)fetchPreviousAndNextElementsPresenceForForm:(NSString*)formName
+                                              field:(NSString*)fieldName
+                                  completionHandler:
+                                      (void (^)(BOOL, BOOL))completionHandler;
+
+// Closes the keyboard and defocuses the active input element.
+- (void)closeKeyboard;
+
+@end
+
+#endif  // COMPONENTS_AUTOFILL_IOS_BROWSER_JS_SUGGESTION_MANAGER_H_