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authortoasted-nutbread <toasted-nutbread@users.noreply.github.com>2020-07-03 11:56:26 -0400
committerGitHub <noreply@github.com>2020-07-03 11:56:26 -0400
commitc13160d784caf5ca2803081171d1c01eb91f49c6 (patch)
tree88526d4c338cea194cc3d5a998d6cab17d12e23d
parent1d02013642df825f3539b03c325dc51d9fd00e83 (diff)
Page exit prevention refactor (#637)
* Add page exit prevention functionality to SettingsController * Update dictionary controller to use new page exit prevention system * Remove page-exit-prevention.js
-rw-r--r--ext/bg/js/page-exit-prevention.js59
-rw-r--r--ext/bg/js/settings/dictionaries.js21
-rw-r--r--ext/bg/js/settings/settings-controller.js29
-rw-r--r--ext/bg/settings.html1
4 files changed, 42 insertions, 68 deletions
diff --git a/ext/bg/js/page-exit-prevention.js b/ext/bg/js/page-exit-prevention.js
deleted file mode 100644
index f55cf024..00000000
--- a/ext/bg/js/page-exit-prevention.js
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Copyright (C) 2019-2020 Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- */
-
-
-class PageExitPrevention {
- constructor() {
- }
-
- start() {
- PageExitPrevention._addInstance(this);
- }
-
- end() {
- PageExitPrevention._removeInstance(this);
- }
-
- static _addInstance(instance) {
- const size = PageExitPrevention._instances.size;
- PageExitPrevention._instances.set(instance, true);
- if (size === 0) {
- window.addEventListener('beforeunload', PageExitPrevention._onBeforeUnload);
- }
- }
-
- static _removeInstance(instance) {
- if (
- PageExitPrevention._instances.delete(instance) &&
- PageExitPrevention._instances.size === 0
- ) {
- window.removeEventListener('beforeunload', PageExitPrevention._onBeforeUnload);
- }
- }
-
- static _onBeforeUnload(e) {
- if (PageExitPrevention._instances.size === 0) {
- return;
- }
-
- e.preventDefault();
- e.returnValue = '';
- return '';
- }
-}
-
-PageExitPrevention._instances = new Map();
diff --git a/ext/bg/js/settings/dictionaries.js b/ext/bg/js/settings/dictionaries.js
index 94a71233..1e780909 100644
--- a/ext/bg/js/settings/dictionaries.js
+++ b/ext/bg/js/settings/dictionaries.js
@@ -16,7 +16,6 @@
*/
/* global
- * PageExitPrevention
* api
* utilBackgroundIsolate
*/
@@ -156,6 +155,11 @@ class SettingsDictionaryListUI extends EventDispatcher {
// Overwrite
}
+ preventPageExit() {
+ // Overwrite
+ return {end: () => {}};
+ }
+
onDictionaryConfirmDelete(e) {
e.preventDefault();
const n = document.querySelector('#dict-delete-modal');
@@ -286,10 +290,8 @@ class SettingsDictionaryEntryUI {
const progressBar = this.content.querySelector('.progress-bar');
this.isDeleting = true;
- const prevention = new PageExitPrevention();
+ const prevention = this.parent.preventPageExit();
try {
- prevention.start();
-
const onProgress = ({processed, count, storeCount, storesProcesed}) => {
let percent = 0.0;
if (count > 0 && storesProcesed > 0) {
@@ -409,6 +411,7 @@ class DictionaryController {
document.querySelector('#dict-extra-template')
);
this._dictionaryUI.save = () => this._settingsController.save();
+ this._dictionaryUI.preventPageExit = this._preventPageExit.bind(this);
this._dictionaryUI.on('databaseUpdated', this._onDatabaseUpdated.bind(this));
document.querySelector('#dict-purge-button').addEventListener('click', this._onPurgeButtonClick.bind(this), false);
@@ -610,10 +613,9 @@ class DictionaryController {
const dictProgress = document.querySelector('#dict-purge');
dictProgress.hidden = false;
- const prevention = new PageExitPrevention();
+ const prevention = this._preventPageExit();
try {
- prevention.start();
this._dictionaryErrorsShow(null);
this._dictionarySpinnerShow(true);
@@ -649,10 +651,9 @@ class DictionaryController {
const dictProgress = $('#dict-import-progress').show();
const dictImportInfo = document.querySelector('#dict-import-info');
- const prevention = new PageExitPrevention();
+ const prevention = this._preventPageExit();
try {
- prevention.start();
this._dictionaryErrorsShow(null);
this._dictionarySpinnerShow(true);
@@ -718,4 +719,8 @@ class DictionaryController {
optionsFull.global.database.prefixWildcardsSupported = !!e.target.checked;
await this._settingsController.save();
}
+
+ _preventPageExit() {
+ return this.settingsController.preventPageExit();
+ }
}
diff --git a/ext/bg/js/settings/settings-controller.js b/ext/bg/js/settings/settings-controller.js
index 87dea408..6479714d 100644
--- a/ext/bg/js/settings/settings-controller.js
+++ b/ext/bg/js/settings/settings-controller.js
@@ -26,6 +26,8 @@ class SettingsController extends EventDispatcher {
super();
this._profileIndex = profileIndex;
this._source = yomichan.generateId(16);
+ this._pageExitPreventions = new Set();
+ this._pageExitPreventionEventListeners = new EventListenerCollection();
}
get source() {
@@ -109,6 +111,16 @@ class SettingsController extends EventDispatcher {
return {index: this._profileIndex};
}
+ preventPageExit() {
+ const obj = {end: null};
+ obj.end = this._endPreventPageExit.bind(this, obj);
+ if (this._pageExitPreventionEventListeners.size === 0) {
+ this._pageExitPreventionEventListeners.addEventListener(window, 'beforeunload', this._onBeforeUnload.bind(this), false);
+ }
+ this._pageExitPreventions.add(obj);
+ return obj;
+ }
+
// Private
_setProfileIndex(value) {
@@ -147,4 +159,21 @@ class SettingsController extends EventDispatcher {
targets = this._setupTargets(targets, extraFields);
return await api.modifySettings(targets, this._source);
}
+
+ _onBeforeUnload(e) {
+ if (this._pageExitPreventions.size === 0) {
+ return;
+ }
+
+ e.preventDefault();
+ e.returnValue = '';
+ return '';
+ }
+
+ _endPreventPageExit(obj) {
+ this._pageExitPreventions.delete(obj);
+ if (this._pageExitPreventions.size === 0) {
+ this._pageExitPreventionEventListeners.removeAllEventListeners();
+ }
+ }
}
diff --git a/ext/bg/settings.html b/ext/bg/settings.html
index 6fa54e23..260c1b46 100644
--- a/ext/bg/settings.html
+++ b/ext/bg/settings.html
@@ -1146,7 +1146,6 @@
<script src="/bg/js/dictionary.js"></script>
<script src="/bg/js/handlebars.js"></script>
<script src="/bg/js/options.js"></script>
- <script src="/bg/js/page-exit-prevention.js"></script>
<script src="/bg/js/profile-conditions.js"></script>
<script src="/bg/js/util.js"></script>
<script src="/mixed/js/audio-system.js"></script>