| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /** |
| * Directive to workaround known issue with type ahead edit lost cursor position. |
| * @param {ng.ITimeoutService} $timeout |
| */ |
| export default function directive($timeout) { |
| let promise; |
| |
| /** |
| * @param {ng.IScope} scope |
| * @param {JQLite} elem [description] |
| */ |
| function directive(scope, elem) { |
| elem.on('keydown', function(evt) { |
| const key = evt.which; |
| const ctrlDown = evt.ctrlKey || evt.metaKey; |
| const input = this; |
| let start = input.selectionStart; |
| |
| if (promise) |
| $timeout.cancel(promise); |
| |
| promise = $timeout(() => { |
| let setCursor = false; |
| |
| // Handle Backspace[8]. |
| if (key === 8 && start > 0) { |
| start -= 1; |
| |
| setCursor = true; |
| } |
| // Handle Del[46]. |
| else if (key === 46) |
| setCursor = true; |
| // Handle: Caps Lock[20], Tab[9], Shift[16], Ctrl[17], Alt[18], Esc[27], Enter[13], Arrows[37..40], Home[36], End[35], Ins[45], PgUp[33], PgDown[34], F1..F12[111..124], Num Lock[], Scroll Lock[145]. |
| else if (!(key === 8 || key === 9 || key === 13 || (key > 15 && key < 20) || key === 27 || |
| (key > 32 && key < 41) || key === 45 || (key > 111 && key < 124) || key === 144 || key === 145)) { |
| // Handle: Ctrl + [A[65], C[67], V[86]]. |
| if (!(ctrlDown && (key === 65 || key === 67 || key === 86))) { |
| start += 1; |
| |
| setCursor = true; |
| } |
| } |
| |
| if (setCursor) |
| input.setSelectionRange(start, start); |
| |
| promise = null; |
| }); |
| }); |
| |
| // Removes bound events in the element itself when the scope is destroyed |
| scope.$on('$destroy', function() { |
| elem.off('keydown'); |
| }); |
| } |
| |
| return directive; |
| } |
| |
| directive.$inject = ['$timeout']; |