Improve infinite scroll on notifications

7 files changed, 40 insertions, 17 deletions

diff --git a/app/assets/javascripts/components/actions/notifications.jsx b/app/assets/javascripts/components/actions/notifications.jsx
index 23bdcb5c7..1731c1857 100644
--- a/app/assets/javascripts/components/actions/notifications.jsx
+++ b/app/assets/javascripts/components/actions/notifications.jsx
@@ -96,13 +96,17 @@ export function expandNotifications() {
   return (dispatch, getState) => {
     const url = getState().getIn(['notifications', 'next'], null);
 
-    if (url === null) {
+    if (url === null || getState().getIn(['notifications', 'isLoading'])) {
       return;
     }
 
     dispatch(expandNotificationsRequest());
 
-    api(getState).get(url).then(response => {
+    api(getState).get(url, {
+      params: {
+        limit: 5
+      }
+    }).then(response => {
       const next = getLinks(response).refs.find(link => link.rel === 'next');
 
       dispatch(expandNotificationsSuccess(response.data, next ? next.uri : null));
diff --git a/app/assets/javascripts/components/features/notifications/index.jsx b/app/assets/javascripts/components/features/notifications/index.jsx
index 366d8f5e9..b4593aaff 100644
--- a/app/assets/javascripts/components/features/notifications/index.jsx
+++ b/app/assets/javascripts/components/features/notifications/index.jsx
@@ -20,7 +20,8 @@ const getNotifications = createSelector([
 ], (excludedTypes, notifications) => notifications.filterNot(item => excludedTypes.includes(item.get('type'))));
 
 const mapStateToProps = state => ({
-  notifications: getNotifications(state)
+  notifications: getNotifications(state),
+  isLoading: state.getIn(['notifications', 'isLoading'], true)
 });
 
 const Notifications = React.createClass({
@@ -29,7 +30,8 @@ const Notifications = React.createClass({
     notifications: ImmutablePropTypes.list.isRequired,
     dispatch: React.PropTypes.func.isRequired,
     trackScroll: React.PropTypes.bool,
-    intl: React.PropTypes.object.isRequired
+    intl: React.PropTypes.object.isRequired,
+    isLoading: React.PropTypes.bool
   },
 
   getDefaultProps () {
@@ -42,8 +44,9 @@ const Notifications = React.createClass({
 
   handleScroll (e) {
     const { scrollTop, scrollHeight, clientHeight } = e.target;
+    const offset = scrollHeight - scrollTop - clientHeight;
 
-    if (scrollTop === scrollHeight - clientHeight) {
+    if (250 > offset && !this.props.isLoading) {
       this.props.dispatch(expandNotifications());
     }
   },
diff --git a/app/assets/javascripts/components/reducers/notifications.jsx b/app/assets/javascripts/components/reducers/notifications.jsx
index c85e7b460..482093c33 100644
--- a/app/assets/javascripts/components/reducers/notifications.jsx
+++ b/app/assets/javascripts/components/reducers/notifications.jsx
@@ -2,6 +2,10 @@ import {
   NOTIFICATIONS_UPDATE,
   NOTIFICATIONS_REFRESH_SUCCESS,
   NOTIFICATIONS_EXPAND_SUCCESS,
+  NOTIFICATIONS_REFRESH_REQUEST,
+  NOTIFICATIONS_EXPAND_REQUEST,
+  NOTIFICATIONS_REFRESH_FAIL,
+  NOTIFICATIONS_EXPAND_FAIL
 } from '../actions/notifications';
 import { ACCOUNT_BLOCK_SUCCESS } from '../actions/accounts';
 import Immutable from 'immutable';
@@ -9,7 +13,8 @@ import Immutable from 'immutable';
 const initialState = Immutable.Map({
   items: Immutable.List(),
   next: null,
-  loaded: false
+  loaded: false,
+  isLoading: true
 });
 
 const notificationToMap = notification => Immutable.Map({
@@ -31,7 +36,11 @@ const normalizeNotifications = (state, notifications, next) => {
     items = items.set(i, notificationToMap(n));
   });
 
-  return state.update('items', list => loaded ? list.unshift(...items) : list.push(...items)).set('next', next).set('loaded', true);
+  return state
+    .update('items', list => loaded ? list.unshift(...items) : list.push(...items))
+    .set('next', next)
+    .set('loaded', true)
+    .set('isLoading', false);
 };
 
 const appendNormalizedNotifications = (state, notifications, next) => {
@@ -41,7 +50,10 @@ const appendNormalizedNotifications = (state, notifications, next) => {
     items = items.set(i, notificationToMap(n));
   });
 
-  return state.update('items', list => list.push(...items)).set('next', next);
+  return state
+    .update('items', list => list.push(...items))
+    .set('next', next)
+    .set('isLoading', false);
 };
 
 const filterNotifications = (state, relationship) => {
@@ -50,6 +62,11 @@ const filterNotifications = (state, relationship) => {
 
 export default function notifications(state = initialState, action) {
   switch(action.type) {
+  case NOTIFICATIONS_REFRESH_REQUEST:
+  case NOTIFICATIONS_EXPAND_REQUEST:
+  case NOTIFICATIONS_REFRESH_FAIL:
+  case NOTIFICATIONS_EXPAND_FAIL:
+    return state.set('isLoading', true);
   case NOTIFICATIONS_UPDATE:
     return normalizeNotification(state, action.notification);
   case NOTIFICATIONS_REFRESH_SUCCESS:
diff --git a/app/assets/stylesheets/about.scss b/app/assets/stylesheets/about.scss
index d92febced..b7d903ddf 100644
--- a/app/assets/stylesheets/about.scss
+++ b/app/assets/stylesheets/about.scss
@@ -1,5 +1,3 @@
-@import url(https://fonts.googleapis.com/css?family=Montserrat);
-
 .about-body {
   .wrapper {
     max-width: 600px;
diff --git a/app/assets/stylesheets/application.scss b/app/assets/stylesheets/application.scss
index fc58c7463..649a0148b 100644
--- a/app/assets/stylesheets/application.scss
+++ b/app/assets/stylesheets/application.scss
@@ -1,6 +1,7 @@
 @import 'variables';
 @import url(https://fonts.googleapis.com/css?family=Roboto:400,500,400italic);
 @import url(https://fonts.googleapis.com/css?family=Roboto+Mono:400,500);
+@import url(https://fonts.googleapis.com/css?family=Montserrat);
 @import 'font-awesome';
 
 /* http://meyerweb.com/eric/tools/css/reset/
diff --git a/app/assets/stylesheets/boost.scss b/app/assets/stylesheets/boost.scss
index c45d4ff8e..a2e6421f8 100644
--- a/app/assets/stylesheets/boost.scss
+++ b/app/assets/stylesheets/boost.scss
@@ -1,9 +1,7 @@
-@import 'variables';
-
 @function url-friendly-colour($colour) {
-    @return '%23' + str-slice('#{$colour}', 2, -1)
+  @return '%23' + str-slice('#{$colour}', 2, -1)
 }
 
 button i.fa-retweet {
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-}
\ No newline at end of file
+  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='22' height='209'><path d='M4.97 3.16c-.1.03-.17.1-.22.18L.8 8.24c-.2.3.03.78.4.8H3.6v2.68c0 4.26-.55 3.62 3.66 3.62h7.66l-2.3-2.84c-.03-.02-.03-.04-.05-.06H7.27c-.44 0-.72-.3-.72-.72v-2.7h2.5c.37.03.63-.48.4-.77L5.5 3.35c-.12-.17-.34-.25-.53-.2zm12.16.43c-.55-.02-1.32.02-2.4.02H7.1l2.32 2.85.03.06h5.25c.42 0 .72.28.72.72v2.7h-2.5c-.36.02-.56.54-.3.8l3.92 4.9c.18.25.6.25.78 0l3.94-4.9c.26-.28 0-.83-.37-.8H18.4v-2.7c0-3.15.4-3.62-1.25-3.66z' fill='#{url-friendly-colour(lighten($color1, 26%))}' stroke-width='0'/><path d='M7.78 19.66c-.24.02-.44.25-.44.5v2.46h-.06c-1.08 0-1.86-.03-2.4-.03-1.64 0-1.25.43-1.25 3.65v4.47c0 4.26-.56 3.62 3.65 3.62H8.5l-1.3-1.06c-.1-.08-.18-.2-.2-.3-.02-.17.06-.35.2-.45l1.33-1.1H7.28c-.44 0-.72-.3-.72-.7v-4.48c0-.44.28-.72.72-.72h.06v2.5c0 .38.54.63.82.38l4.9-3.93c.25-.18.25-.6 0-.78l-4.9-3.92c-.1-.1-.24-.14-.38-.12zm9.34 2.93c-.54-.02-1.3.02-2.4.02h-1.25l1.3 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+}
diff --git a/app/controllers/api/v1/notifications_controller.rb b/app/controllers/api/v1/notifications_controller.rb
index 157a88e14..877356a75 100644
--- a/app/controllers/api/v1/notifications_controller.rb
+++ b/app/controllers/api/v1/notifications_controller.rb
@@ -6,8 +6,10 @@ class Api::V1::NotificationsController < ApiController
 
   respond_to :json
 
+  DEFAULT_NOTIFICATIONS_LIMIT = 15
+
   def index
-    @notifications = Notification.where(account: current_account).browserable.paginate_by_max_id(limit_param(15), params[:max_id], params[:since_id])
+    @notifications = Notification.where(account: current_account).browserable.paginate_by_max_id(limit_param(DEFAULT_NOTIFICATIONS_LIMIT), params[:max_id], params[:since_id])
     @notifications = cache_collection(@notifications, Notification)
     statuses       = @notifications.select { |n| !n.target_status.nil? }.map(&:target_status)
 
@@ -15,7 +17,7 @@ class Api::V1::NotificationsController < ApiController
     set_counters_maps(statuses)
     set_account_counters_maps(@notifications.map(&:from_account))
 
-    next_path = api_v1_notifications_url(max_id: @notifications.last.id)    if @notifications.size == limit_param(15)
+    next_path = api_v1_notifications_url(max_id: @notifications.last.id)    if @notifications.size == limit_param(DEFAULT_NOTIFICATIONS_LIMIT)
     prev_path = api_v1_notifications_url(since_id: @notifications.first.id) unless @notifications.empty?
 
     set_pagination_headers(next_path, prev_path)