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b46a4fe286
* Google changed from an Inc to an LLC. This happened back in 2017 but we didn’t notice. Officially we should update files from Inc to LLC when they are changed as part of regular edits, but this is a nightmare to remember for the next decade. * Remove project description/titles from licenses This is no longer part of Google’s header requirements. Our existing descriptions were useless (“Visual Blocks Editor”) or grossly obselete (“Visual Blocks Language”). * License no longer requires URL. * Fix license regexps.
97 lines
2.4 KiB
JavaScript
97 lines
2.4 KiB
JavaScript
/**
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* @license
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* Copyright 2019 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @fileoverview The class representing a cursor used to navigate the flyout.
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* Used primarily for keyboard navigation.
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* @author aschmiedt@google.com (Abby Schmiedt)
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*/
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'use strict';
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goog.provide('Blockly.FlyoutCursor');
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goog.require('Blockly.Cursor');
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goog.require('Blockly.utils.object');
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/**
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* Class for a flyout cursor.
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* This controls how a user navigates blocks in the flyout.
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* @constructor
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* @extends {Blockly.Cursor}
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*/
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Blockly.FlyoutCursor = function() {
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Blockly.FlyoutCursor.superClass_.constructor.call(this);
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};
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Blockly.utils.object.inherits(Blockly.FlyoutCursor, Blockly.Cursor);
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/**
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* Find the next connection, field, or block.
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* @return {Blockly.ASTNode} The next element, or null if the current node is
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* not set or there is no next value.
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* @override
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*/
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Blockly.FlyoutCursor.prototype.next = function() {
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var curNode = this.getCurNode();
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if (!curNode) {
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return null;
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}
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var newNode = curNode.next();
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if (newNode) {
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this.setCurNode(newNode);
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}
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return newNode;
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};
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/**
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* This is a no-op since a flyout cursor can not go in.
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* @return {null} Always null.
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* @override
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*/
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Blockly.FlyoutCursor.prototype.in = function() {
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return null;
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};
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/**
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* Find the previous connection, field, or block.
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* @return {Blockly.ASTNode} The previous element, or null if the current node
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* is not set or there is no previous value.
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* @override
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*/
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Blockly.FlyoutCursor.prototype.prev = function() {
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var curNode = this.getCurNode();
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if (!curNode) {
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return null;
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}
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var newNode = curNode.prev();
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if (newNode) {
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this.setCurNode(newNode);
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}
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return newNode;
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};
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/**
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* This is a no-op since a flyout cursor can not go out.
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* @return {null} Always null.
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* @override
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*/
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Blockly.FlyoutCursor.prototype.out = function() {
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return null;
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};
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