* @param {!../service/ampdoc-impl.AmpDoc} ampdoc * @param {function()} handler
(ampdoc, handler)
| 18 | * @param {function()} handler |
| 19 | */ |
| 20 | constructor(ampdoc, handler) { |
| 21 | const {win} = ampdoc; |
| 22 | |
| 23 | /** @private @const */ |
| 24 | this.win_ = win; |
| 25 | |
| 26 | /** @private @const */ |
| 27 | this.handler_ = handler; |
| 28 | |
| 29 | /** @private {?CloseWatcher} */ |
| 30 | this.watcher_ = null; |
| 31 | |
| 32 | /** @private {?../service/history-impl.History} */ |
| 33 | this.history_ = null; |
| 34 | |
| 35 | /** @private {number} */ |
| 36 | this.historyId_ = -1; |
| 37 | |
| 38 | /** @private {?function()} */ |
| 39 | this.boundCloseOnEscape_ = null; |
| 40 | |
| 41 | if (typeof win.CloseWatcher === 'function') { |
| 42 | try { |
| 43 | this.watcher_ = new win.CloseWatcher(); |
| 44 | } catch (e) { |
| 45 | dev().error(TAG, 'CloseWatcher failed:', e); |
| 46 | } |
| 47 | } |
| 48 | if (this.watcher_) { |
| 49 | this.watcher_.onclose = () => { |
| 50 | handler(); |
| 51 | this.destroy(); |
| 52 | }; |
| 53 | } else { |
| 54 | this.history_ = Services.historyForDoc(ampdoc); |
| 55 | this.history_ |
| 56 | .push(() => handler()) |
| 57 | .then((historyId) => { |
| 58 | this.historyId_ = historyId; |
| 59 | }); |
| 60 | this.boundCloseOnEscape_ = this.closeOnEscape_.bind(this); |
| 61 | win.document.documentElement.addEventListener( |
| 62 | 'keydown', |
| 63 | this.boundCloseOnEscape_ |
| 64 | ); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * Signals to the close watcher to close the modal. |