DEV: attempts to fix various leaks (#9428)

* DEV: attempts to fix various leaks

* scheduleOnce doesnt work with anon function

* removes the I18n change

app/assets/javascripts/discourse/components/composer-body.js

@@ -1,7 +1,7 @@
 import {
   run,
   cancel,
-  scheduleOnce,
+  schedule,
   later,
   debounce,
   throttle
@@ -65,7 +65,7 @@ export default Component.extend(KeyEnterEscape, {
     "composer.canEditTopicFeaturedLink"
   )
   resize() {
-    scheduleOnce("afterRender", () => {
+    schedule("afterRender", () => {
       if (!this.element || this.isDestroying || this.isDestroyed) {
         return;
       }

app/assets/javascripts/discourse/components/composer-editor.js

@@ -1,4 +1,4 @@
-import { debounce, later, next, scheduleOnce, throttle } from "@ember/runloop";
+import { debounce, later, next, schedule, throttle } from "@ember/runloop";
 import Component from "@ember/component";
 import userSearch from "discourse/lib/user-search";
 import discourseComputed, {
@@ -194,7 +194,7 @@ export default Component.extend({
         transformComplete: v => v.username || v.name,
         afterComplete() {
           // ensures textarea scroll position is correct
-          scheduleOnce("afterRender", () => $input.blur().focus());
+          schedule("afterRender", () => $input.blur().focus());
         },
         triggerRule: textarea =>
           !inCodeBlock(textarea.value, caretPosition(textarea))
@@ -323,7 +323,7 @@ export default Component.extend({
       this.appEvents.on(event, this, this._resetShouldBuildScrollMap);
     });
 
-    scheduleOnce("afterRender", () => {
+    schedule("afterRender", () => {
       $input.on("touchstart mouseenter", () => {
         if (!$preview.is(":visible")) return;
         $preview.off("scroll");
@@ -569,7 +569,7 @@ export default Component.extend({
   },
 
   _warnMentionedGroups($preview) {
-    scheduleOnce("afterRender", () => {
+    schedule("afterRender", () => {
       var found = this.warnedGroupMentions || [];
       $preview.find(".mention-group.notify").each((idx, e) => {
         const $e = $(e);
@@ -597,7 +597,7 @@ export default Component.extend({
       return;
     }
 
-    scheduleOnce("afterRender", () => {
+    schedule("afterRender", () => {
       let found = this.warnedCannotSeeMentions || [];
 
       $preview.find(".mention.cannot-see").each((idx, e) => {

app/assets/javascripts/discourse/components/d-editor.js

@@ -356,7 +356,7 @@ export default Component.extend({
         return;
       }
       this.set("preview", cooked);
-      scheduleOnce("afterRender", () => {
+      schedule("afterRender", () => {
         if (this._state !== "inDOM") {
           return;
         }
@@ -559,7 +559,7 @@ export default Component.extend({
   },
 
   _selectText(from, length) {
-    scheduleOnce("afterRender", () => {
+    schedule("afterRender", () => {
       const textarea = this.element.querySelector("textarea.d-editor-input");
       const $textarea = $(textarea);
       const oldScrollPos = $textarea.scrollTop();
@@ -898,7 +898,7 @@ export default Component.extend({
   // ensures textarea scroll position is correct
   _focusTextArea() {
     const textarea = this.element.querySelector("textarea.d-editor-input");
-    scheduleOnce("afterRender", () => {
+    schedule("afterRender", () => {
       textarea.blur();
       textarea.focus();
     });

app/assets/javascripts/discourse/components/edit-category-topic-template.js

@@ -1,4 +1,4 @@
-import { scheduleOnce } from "@ember/runloop";
+import { schedule } from "@ember/runloop";
 import { buildCategoryPanel } from "discourse/components/edit-category-panel";
 import { observes } from "discourse-common/utils/decorators";
 
@@ -6,7 +6,7 @@ export default buildCategoryPanel("topic-template", {
   @observes("activeTab")
   _activeTabChanged: function() {
     if (this.activeTab) {
-      scheduleOnce("afterRender", () =>
+      schedule("afterRender", () =>
         this.element.querySelector(".d-editor-input").focus()
       );
     }

app/assets/javascripts/discourse/components/emoji-picker.js

@@ -1,5 +1,5 @@
 import { inject as service } from "@ember/service";
-import { schedule } from "@ember/runloop";
+import { throttle, debounce, schedule } from "@ember/runloop";
 import Component from "@ember/component";
 import { on, observes } from "discourse-common/utils/decorators";
 import { findRawTemplate } from "discourse/lib/raw-templates";
@@ -12,8 +12,6 @@ import {
 import { safariHacksDisabled } from "discourse/lib/utilities";
 import ENV, { INPUT_DELAY } from "discourse-common/config/environment";
 
-const { run } = Ember;
-
 const PER_ROW = 11;
 function customEmojis() {
   const list = extendedEmojiList();
@@ -54,7 +52,7 @@ export default Component.extend({
       recentEmojis: this.emojiStore.favorites
     });
 
-    run.scheduleOnce("afterRender", this, function() {
+    schedule("afterRender", this, function() {
       this._bindEvents();
       this._loadCategoriesEmojis();
       this._positionPicker();
@@ -110,7 +108,7 @@ export default Component.extend({
   filterChanged() {
     this.$filter.find(".clear-filter").toggle(!_.isEmpty(this.filter));
     const filterDelay = this.site.isMobileDevice ? 400 : INPUT_DELAY;
-    run.debounce(this, this._filterEmojisList, filterDelay);
+    debounce(this, this._filterEmojisList, filterDelay);
   },
 
   @observes("selectedDiversity")
@@ -309,11 +307,11 @@ export default Component.extend({
 
   _bindResizing() {
     $(window).on("resize", () => {
-      run.throttle(this, this._positionPicker, 16);
+      throttle(this, this._positionPicker, 16);
     });
 
     $("#reply-control").on("div-resizing", () => {
-      run.throttle(this, this._positionPicker, 16);
+      throttle(this, this._positionPicker, 16);
     });
   },
 
@@ -376,7 +374,7 @@ export default Component.extend({
 
   _bindSectionsScroll() {
     let onScroll = () => {
-      run.debounce(this, this._checkVisibleSection, 50);
+      debounce(this, this._checkVisibleSection, 50);
     };
 
     this.$list.on("scroll", onScroll);

app/assets/javascripts/discourse/components/expanding-text-area.js

@@ -1,12 +1,12 @@
 import { TextArea } from "@ember/component";
-import { scheduleOnce } from "@ember/runloop";
+import { schedule } from "@ember/runloop";
 import { on, observes } from "discourse-common/utils/decorators";
 import autosize from "discourse/lib/autosize";
 
 export default TextArea.extend({
   @on("didInsertElement")
   _startWatching() {
-    scheduleOnce("afterRender", () => {
+    schedule("afterRender", () => {
       $(this.element).focus();
       autosize(this.element);
     });

app/assets/javascripts/discourse/components/quote-button.js

@@ -1,4 +1,4 @@
-import { scheduleOnce } from "@ember/runloop";
+import { schedule } from "@ember/runloop";
 import Component from "@ember/component";
 import discourseDebounce from "discourse/lib/debounce";
 import toMarkdown from "discourse/lib/to-markdown";
@@ -138,7 +138,11 @@ export default Component.extend({
     }
 
     // change the position of the button
-    scheduleOnce("afterRender", () => {
+    schedule("afterRender", () => {
+      if (!this.element || this.isDestroying || this.isDestroyed) {
+        return;
+      }
+
       let top = markerOffset.top;
       let left = markerOffset.left + Math.max(0, parentScrollLeft);
 
@@ -160,6 +164,8 @@ export default Component.extend({
   },
 
   didInsertElement() {
+    this._super(...arguments);
+
     const { isWinphone, isAndroid } = this.capabilities;
     const wait = isWinphone || isAndroid ? INPUT_DELAY : 25;
     const onSelectionChanged = discourseDebounce(

app/assets/javascripts/discourse/components/search-advanced-options.js

@@ -77,7 +77,7 @@ export default Component.extend({
 
     this._init();
 
-    scheduleOnce("afterRender", () => this._update());
+    scheduleOnce("afterRender", this, this._update);
   },
 
   @observes("searchTerm")

app/assets/javascripts/discourse/controllers/insert-hyperlink.js

@@ -1,5 +1,5 @@
 import { isEmpty } from "@ember/utils";
-import { cancel, debounce, scheduleOnce } from "@ember/runloop";
+import { cancel, debounce, schedule } from "@ember/runloop";
 import Controller from "@ember/controller";
 import ModalFunctionality from "discourse/mixins/modal-functionality";
 import { searchForTerm } from "discourse/lib/search";
@@ -17,7 +17,7 @@ export default Controller.extend(ModalFunctionality, {
       selectedRow: -1
     });
 
-    scheduleOnce("afterRender", () => {
+    schedule("afterRender", () => {
       const element = document.querySelector(".insert-link");
 
       element.addEventListener("keydown", e => this.keyDown(e));

app/assets/javascripts/discourse/controllers/login.js

@@ -2,8 +2,7 @@ import discourseComputed from "discourse-common/utils/decorators";
 import { isEmpty } from "@ember/utils";
 import { alias, or, readOnly } from "@ember/object/computed";
 import EmberObject from "@ember/object";
-import { next } from "@ember/runloop";
+import { next, schedule } from "@ember/runloop";
-import { scheduleOnce } from "@ember/runloop";
 import Controller, { inject as controller } from "@ember/controller";
 import { ajax } from "discourse/lib/ajax";
 import ModalFunctionality from "discourse/mixins/modal-functionality";
@@ -152,7 +151,7 @@ export default Controller.extend(ModalFunctionality, {
 
               // only need to focus the 2FA input for TOTP
               if (!this.showSecurityKey) {
-                scheduleOnce("afterRender", () =>
+                schedule("afterRender", () =>
                   document
                     .getElementById("second-factor")
                     .querySelector("input")

app/assets/javascripts/discourse/controllers/topic.js

@@ -1,8 +1,7 @@
 import { isPresent, isEmpty } from "@ember/utils";
 import { or, and, not, alias } from "@ember/object/computed";
 import EmberObject from "@ember/object";
-import { next } from "@ember/runloop";
+import { next, schedule } from "@ember/runloop";
-import { scheduleOnce } from "@ember/runloop";
 import Controller, { inject as controller } from "@ember/controller";
 import { bufferedProperty } from "discourse/mixins/buffered-content";
 import Composer from "discourse/models/composer";
@@ -137,9 +136,7 @@ export default Controller.extend(bufferedProperty("model"), {
       return;
     }
 
-    scheduleOnce("afterRender", () => {
+    schedule("afterRender", () => this.send("showHistory", post, revision));
-      this.send("showHistory", post, revision);
-    });
   },
 
   showCategoryChooser: not("model.isPrivateMessage"),

app/assets/javascripts/discourse/initializers/keyboard-shortcuts.js

@@ -7,5 +7,9 @@ export default {
   initialize(container) {
     KeyboardShortcuts.init(Mousetrap, container);
     KeyboardShortcuts.bindEvents();
+  },
+
+  teardown() {
+    KeyboardShortcuts.teardown();
   }
 };

app/assets/javascripts/discourse/initializers/title-notifications.js

@@ -13,6 +13,14 @@ export default {
       .on("notifications:changed", this, "_updateTitle");
   },
 
+  teardown(container) {
+    container
+      .lookup("service:app-events")
+      .off("notifications:changed", this, "_updateTitle");
+
+    this.container = null;
+  },
+
   _updateTitle() {
     const user = this.container.lookup("current-user:main");
     if (!user) return; // must be logged in

app/assets/javascripts/discourse/lib/keyboard-shortcuts.js

@@ -106,6 +106,10 @@ export default {
     });
   },
 
+  teardown() {
+    this.container = null;
+  },
+
   bindKey(key, binding = null) {
     if (!binding) {
       binding = DEFAULT_BINDINGS[key];

app/assets/javascripts/discourse/lib/link-mentions.js

@@ -1,4 +1,4 @@
-import { scheduleOnce } from "@ember/runloop";
+import { schedule } from "@ember/runloop";
 import { ajax } from "discourse/lib/ajax";
 import { userPath } from "discourse/lib/url";
 import { formatUsername } from "discourse/lib/utilities";
@@ -40,7 +40,7 @@ const checked = {};
 const cannotSee = [];
 
 function updateFound($mentions, usernames) {
-  scheduleOnce("afterRender", function() {
+  schedule("afterRender", function() {
     $mentions.each((i, e) => {
       const $e = $(e);
       const username = usernames[i];

app/assets/javascripts/discourse/routes/topic-from-params.js

@@ -1,5 +1,5 @@
 import { isEmpty } from "@ember/utils";
-import { scheduleOnce } from "@ember/runloop";
+import { schedule } from "@ember/runloop";
 import DiscourseRoute from "discourse/routes/discourse";
 import DiscourseURL from "discourse/lib/url";
 import Draft from "discourse/models/draft";
@@ -60,7 +60,7 @@ export default DiscourseRoute.extend({
         topicController.subscribe();
 
         // Highlight our post after the next render
-        scheduleOnce("afterRender", () =>
+        schedule("afterRender", () =>
           this.appEvents.trigger("post:highlight", closest)
         );
 

app/assets/javascripts/discourse/routes/topic.js

@@ -1,20 +1,26 @@
 import { get } from "@ember/object";
 import { isEmpty } from "@ember/utils";
-import { cancel, later, scheduleOnce } from "@ember/runloop";
+import { cancel, later, schedule } from "@ember/runloop";
 import DiscourseRoute from "discourse/routes/discourse";
 import DiscourseURL from "discourse/lib/url";
 import { ID_CONSTRAINT } from "discourse/models/topic";
 import { EventTarget } from "rsvp";
 
-let isTransitioning = false,
-  scheduledReplace = null,
-  lastScrollPos = null;
-
 const SCROLL_DELAY = 500;
 
 import showModal from "discourse/lib/show-modal";
 
 const TopicRoute = DiscourseRoute.extend({
+  init() {
+    this._super(...arguments);
+
+    this.setProperties({
+      isTransitioning: false,
+      scheduledReplace: null,
+      lastScrollPos: null
+    });
+  },
+
   redirect() {
     return this.redirectIfLoginRequired();
   },
@@ -169,7 +175,7 @@ const TopicRoute = DiscourseRoute.extend({
     // Use replaceState to update the URL once it changes
     postChangedRoute(currentPost) {
       // do nothing if we are transitioning to another route
-      if (isTransitioning || TopicRoute.disableReplaceState) {
+      if (this.isTransitioning || TopicRoute.disableReplaceState) {
         return;
       }
 
@@ -180,14 +186,17 @@ const TopicRoute = DiscourseRoute.extend({
           postUrl += "/" + currentPost;
         }
 
-        cancel(scheduledReplace);
+        cancel(this.scheduledReplace);
-        lastScrollPos = parseInt($(document).scrollTop(), 10);
+
-        scheduledReplace = later(
+        this.setProperties({
-          this,
+          lastScrollPos: parseInt($(document).scrollTop(), 10),
-          "_replaceUnlessScrolling",
+          scheduledReplace: later(
-          postUrl,
+            this,
-          Ember.Test ? 0 : SCROLL_DELAY
+            "_replaceUnlessScrolling",
-        );
+            postUrl,
+            Ember.Test ? 0 : SCROLL_DELAY
+          )
+        });
       }
     },
 
@@ -198,8 +207,8 @@ const TopicRoute = DiscourseRoute.extend({
 
     willTransition() {
       this._super(...arguments);
-      cancel(scheduledReplace);
+      cancel(this.scheduledReplace);
-      isTransitioning = true;
+      this.set("isTransitioning", true);
       return true;
     }
   },
@@ -208,17 +217,20 @@ const TopicRoute = DiscourseRoute.extend({
   // within a topic until scrolling stops
   _replaceUnlessScrolling(url) {
     const currentPos = parseInt($(document).scrollTop(), 10);
-    if (currentPos === lastScrollPos) {
+    if (currentPos === this.lastScrollPos) {
       DiscourseURL.replaceState(url);
       return;
     }
-    lastScrollPos = currentPos;
+
-    scheduledReplace = later(
+    this.setProperties({
-      this,
+      lastScrollPos: currentPos,
-      "_replaceUnlessScrolling",
+      scheduledReplace: later(
-      url,
+        this,
-      SCROLL_DELAY
+        "_replaceUnlessScrolling",
-    );
+        url,
+        SCROLL_DELAY
+      )
+    });
   },
 
   setupParams(topic, params) {
@@ -264,7 +276,7 @@ const TopicRoute = DiscourseRoute.extend({
 
   activate() {
     this._super(...arguments);
-    isTransitioning = false;
+    this.set("isTransitioning", false);
 
     const topic = this.modelFor("topic");
     this.session.set("lastTopicIdViewed", parseInt(topic.get("id"), 10));
@@ -292,7 +304,7 @@ const TopicRoute = DiscourseRoute.extend({
 
   setupController(controller, model) {
     // In case we navigate from one topic directly to another
-    isTransitioning = false;
+    this.set("isTransitioning", false);
 
     controller.setProperties({
       model,
@@ -314,9 +326,9 @@ const TopicRoute = DiscourseRoute.extend({
     // We reset screen tracking every time a topic is entered
     this.screenTrack.start(model.get("id"), controller);
 
-    scheduleOnce("afterRender", () => {
+    schedule("afterRender", () =>
-      this.appEvents.trigger("header:update-topic", model);
+      this.appEvents.trigger("header:update-topic", model)
-    });
+    );
   }
 });
 

app/assets/javascripts/wizard/components/invite-list.js

@@ -1,4 +1,4 @@
-import { scheduleOnce } from "@ember/runloop";
+import { schedule } from "@ember/runloop";
 import Component from "@ember/component";
 
 export default Component.extend({
@@ -63,7 +63,7 @@ export default Component.extend({
       this.updateField();
 
       this.set("inviteEmail", "");
-      scheduleOnce("afterRender", () =>
+      schedule("afterRender", () =>
         this.element.querySelector(".invite-email").focus()
       );
     },

app/assets/javascripts/wizard/components/wizard-step.js

@@ -1,4 +1,4 @@
-import { scheduleOnce } from "@ember/runloop";
+import { schedule } from "@ember/runloop";
 import Component from "@ember/component";
 import getUrl from "discourse-common/lib/get-url";
 import discourseComputed, { observes } from "discourse-common/utils/decorators";
@@ -96,7 +96,7 @@ export default Component.extend({
   },
 
   autoFocus() {
-    scheduleOnce("afterRender", () => {
+    schedule("afterRender", () => {
       const $invalid = $(".wizard-field.invalid:eq(0) .wizard-focusable");
 
       if ($invalid.length) {
@@ -108,7 +108,7 @@ export default Component.extend({
   },
 
   animateInvalidFields() {
-    scheduleOnce("afterRender", () =>
+    schedule("afterRender", () =>
       $(".invalid input[type=text], .invalid textarea").wiggle(2, 100)
     );
   },

test/javascripts/test_helper.js

@@ -201,6 +201,8 @@ QUnit.testDone(function() {
   });
 
   window.MessageBus.unsubscribe("*");
+  delete window.server;
+  window.Mousetrap.reset();
 });
 
 // Load ES6 tests