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Footer navigation for iOS PWAs and DiscourseHub app (#7347)

This commit is contained in:
Penar Musaraj 2019-04-10 12:23:18 -04:00 committed by GitHub
parent f665862ee8
commit eae22548de
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GPG Key ID: 4AEE18F83AFDEB23
15 changed files with 485 additions and 204 deletions
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46
app/assets/javascripts/discourse/components/discourse-topic.js.es6
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@ -2,12 +2,11 @@ import DiscourseURL from "discourse/lib/url";
import AddArchetypeClass from "discourse/mixins/add-archetype-class";
import ClickTrack from "discourse/lib/click-track";
import Scrolling from "discourse/mixins/scrolling";
import MobileScrollDirection from "discourse/mixins/mobile-scroll-direction";
import { selectedText } from "discourse/lib/utilities";
import { observes } from "ember-addons/ember-computed-decorators";
const MOBILE_SCROLL_DIRECTION_CHECK_THROTTLE = 300;
// Small buffer so that very tiny scrolls don't trigger mobile header switch
const MOBILE_SCROLL_TOLERANCE = 5;
function highlight(postNumber) {
const $contents = $(`#post_${postNumber} .topic-body`);
@ -16,7 +15,11 @@ function highlight(postNumber) {
$contents.on("animationend", () => $contents.removeClass("highlighted"));
}
export default Ember.Component.extend(AddArchetypeClass, Scrolling, {
export default Ember.Component.extend(
AddArchetypeClass,
Scrolling,
MobileScrollDirection,
{
userFilters: Ember.computed.alias("topic.userFilters"),
classNameBindings: [
"multiSelect",
@ -37,7 +40,6 @@ export default Ember.Component.extend(AddArchetypeClass, Scrolling, {
_lastShowTopic: null,
mobileScrollDirection: null,
_mobileLastScroll: null,
@observes("enteredAt")
_enteredTopic() {
@ -184,7 +186,7 @@ export default Ember.Component.extend(AddArchetypeClass, Scrolling, {
if (this.site.mobileView && this.hasScrolled) {
Ember.run.throttle(
this,
this._mobileScrollDirectionCheck,
this.calculateDirection,
offset,
MOBILE_SCROLL_DIRECTION_CHECK_THROTTLE
);
@ -194,37 +196,6 @@ export default Ember.Component.extend(AddArchetypeClass, Scrolling, {
this.appEvents.trigger("topic:scrolled", offset);
},
_mobileScrollDirectionCheck(offset) {
// Difference between this scroll and the one before it.
const delta = Math.floor(offset - this._mobileLastScroll);
// This is a tiny scroll, so we ignore it.
if (delta <= MOBILE_SCROLL_TOLERANCE && delta >= -MOBILE_SCROLL_TOLERANCE)
return;
const prevDirection = this.mobileScrollDirection;
const currDirection = delta > 0 ? "down" : "up";
if (currDirection !== prevDirection) {
this.set("mobileScrollDirection", currDirection);
}
// We store this to compare against it the next time the user scrolls
this._mobileLastScroll = Math.floor(offset);
// If the user reaches the very bottom of the topic, we want to reset the
// scroll direction in order for the header to switch back.
const distanceToTopicBottom = Math.floor(
$("body").height() - offset - $(window).height()
);
// Not at the bottom yet
if (distanceToTopicBottom > 0) return;
// We're at the bottom now, so we reset the direction.
this.set("mobileScrollDirection", null);
},
// We observe the scroll direction on mobile and if it's down, we show the topic
// in the header, otherwise, we hide it.
@observes("mobileScrollDirection")
@ -234,4 +205,5 @@ export default Ember.Component.extend(AddArchetypeClass, Scrolling, {
this.mobileScrollDirection === "down" ? this.get("topic") : null
);
}
});
}
);

128
app/assets/javascripts/discourse/components/mobile-footer.js.es6 Normal file
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@ -0,0 +1,128 @@
import MountWidget from "discourse/components/mount-widget";
import MobileScrollDirection from "discourse/mixins/mobile-scroll-direction";
import Scrolling from "discourse/mixins/scrolling";
import { observes } from "ember-addons/ember-computed-decorators";
const MOBILE_SCROLL_DIRECTION_CHECK_THROTTLE = 150;
const MobileFooterComponent = MountWidget.extend(
Scrolling,
MobileScrollDirection,
{
widget: "mobile-footer-nav",
mobileScrollDirection: null,
scrollEventDisabled: false,
classNames: ["mobile-footer", "visible"],
routeHistory: [],
currentRouteIndex: 0,
canGoBack: false,
canGoForward: false,
backForwardClicked: null,
buildArgs() {
return {
canGoBack: this.canGoBack,
canGoForward: this.canGoForward
};
},
didInsertElement() {
this._super(...arguments);
this.bindScrolling({ name: "mobile-footer" });
$(window).on("resize.mobile-footer-on-scroll", () => this.scrolled());
this.appEvents.on("page:changed", this, "_routeChanged");
this.appEvents.on("composer:opened", this, "_composerOpened");
this.appEvents.on("composer:closed", this, "_composerClosed");
},
willDestroyElement() {
this._super(...arguments);
this.unbindScrolling("mobile-footer");
$(window).unbind("resize.mobile-footer-on-scroll");
this.appEvents.off("page:changed", this, "_routeChanged");
this.appEvents.off("composer:opened", this, "_composerOpened");
this.appEvents.off("composer:closed", this, "_composerClosed");
},
// The user has scrolled the window, or it is finished rendering and ready for processing.
scrolled() {
if (
this.isDestroyed ||
this.isDestroying ||
this._state !== "inDOM" ||
this.scrollEventDisabled
) {
return;
}
const offset = window.pageYOffset || $("html").scrollTop();
Ember.run.throttle(
this,
this.calculateDirection,
offset,
MOBILE_SCROLL_DIRECTION_CHECK_THROTTLE
);
},
// We observe the scroll direction on mobile and if it's down, we show the topic
// in the header, otherwise, we hide it.
@observes("mobileScrollDirection")
toggleMobileFooter() {
this.$().toggleClass(
"visible",
this.mobileScrollDirection === null ? true : false
);
// body class used to adjust positioning of #topic-progress-wrapper
$("body").toggleClass(
"mobile-footer-nav-visible",
this.mobileScrollDirection === null ? true : false
);
},
_routeChanged(route) {
// only update route history if not using back/forward nav
if (this.backForwardClicked) {
this.backForwardClicked = null;
return;
}
this.routeHistory.push(route.url);
this.set("currentRouteIndex", this.routeHistory.length);
this.queueRerender();
},
_composerOpened() {
this.set("mobileScrollDirection", "down");
this.set("scrollEventDisabled", true);
},
_composerClosed() {
this.set("mobileScrollDirection", null);
this.set("scrollEventDisabled", false);
},
goBack() {
this.set("currentRouteIndex", this.get("currentRouteIndex") - 1);
this.backForwardClicked = true;
window.history.back();
},
goForward() {
this.set("currentRouteIndex", this.get("currentRouteIndex") + 1);
this.backForwardClicked = true;
window.history.forward();
},
@observes("currentRouteIndex")
setBackForward() {
let index = this.get("currentRouteIndex");
this.set("canGoBack", index > 1 ? true : false);
this.set("canGoForward", index < this.routeHistory.length ? true : false);
}
}
);
export default MobileFooterComponent;

6
app/assets/javascripts/discourse/controllers/application.js.es6
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@ -1,4 +1,5 @@
import computed from "ember-addons/ember-computed-decorators";
import { isAppWebview, isiOSPWA } from "discourse/lib/utilities";
export default Ember.Controller.extend({
showTop: true,
@ -16,5 +17,10 @@ export default Ember.Controller.extend({
@computed
loginRequired() {
return Discourse.SiteSettings.login_required && !Discourse.User.current();
},
@computed
showMobileFooterNav() {
return isAppWebview() || isiOSPWA();
}
});

9
app/assets/javascripts/discourse/initializers/mobile.js.es6
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@ -14,5 +14,14 @@ export default {
site.set("isMobileDevice", Mobile.isMobileDevice);
setResolverOption("mobileView", Mobile.mobileView);
if (window.ReactNativeWebView) {
Ember.run.later(() => {
let headerBg = $(".d-header").css("background-color");
window.ReactNativeWebView.postMessage(
JSON.stringify({ headerBg: headerBg })
);
}, 500);
}
}
};

10
app/assets/javascripts/discourse/lib/utilities.js.es6
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@ -643,5 +643,15 @@ export function areCookiesEnabled() {
}
}
export function isiOSPWA() {
return (
window.matchMedia("(display-mode: standalone)").matches &&
navigator.userAgent.match(/(iPad|iPhone|iPod)/g)
);
}
export function isAppWebview() {
return window.ReactNativeWebView !== undefined;
}
// This prevents a mini racer crash
export default {};

40
app/assets/javascripts/discourse/mixins/mobile-scroll-direction.js.es6 Normal file
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@ -0,0 +1,40 @@
// Small buffer so that very tiny scrolls don't trigger mobile header switch
const MOBILE_SCROLL_TOLERANCE = 5;
export default Ember.Mixin.create({
_mobileLastScroll: null,
calculateDirection(offset) {
// Difference between this scroll and the one before it.
const delta = Math.floor(offset - this._mobileLastScroll);
// This is a tiny scroll, so we ignore it.
if (delta <= MOBILE_SCROLL_TOLERANCE && delta >= -MOBILE_SCROLL_TOLERANCE)
return;
const prevDirection = this.mobileScrollDirection;
const currDirection = delta > 0 ? "down" : null;
// Handle Safari overscroll first
if (offset < 0) {
this.set("mobileScrollDirection", null);
} else if (currDirection !== prevDirection) {
this.set("mobileScrollDirection", currDirection);
}
// We store this to compare against it the next time the user scrolls
this._mobileLastScroll = Math.floor(offset);
// If the user reaches the very bottom of the topic, we want to reset the
// scroll direction in order for the header to switch back.
const distanceToBottom = Math.floor(
$("body").height() - offset - $(window).height()
);
// Not at the bottom yet
if (distanceToBottom > 0) return;
// We're at the bottom now, so we reset the direction.
this.set("mobileScrollDirection", null);
}
});

4
app/assets/javascripts/discourse/templates/application.hbs
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@ -33,3 +33,7 @@
{{outlet "modal"}}
{{topic-entrance}}
{{outlet "composer"}}
{{#if showMobileFooterNav}}
{{mobile-footer}}
{{/if}}

58
app/assets/javascripts/discourse/widgets/mobile-footer-nav.js.es6 Normal file
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@ -0,0 +1,58 @@
import { createWidget } from "discourse/widgets/widget";
import { isAppWebview } from "discourse/lib/utilities";
createWidget("mobile-footer-nav", {
tagName: "div.mobile-footer-nav",
html(attrs) {
const buttons = [];
buttons.push(
this.attach("flat-button", {
action: "goBack",
icon: "chevron-left",
className: "btn-large",
disabled: !attrs.canGoBack
})
);
buttons.push(
this.attach("flat-button", {
action: "goForward",
icon: "chevron-right",
className: "btn-large",
disabled: !attrs.canGoForward
})
);
if (isAppWebview()) {
buttons.push(
this.attach("flat-button", {
action: "share",
icon: "link",
className: "btn-large"
})
);
buttons.push(
this.attach("flat-button", {
action: "dismiss",
icon: "chevron-down",
className: "btn-large"
})
);
}
return buttons;
},
dismiss() {
window.ReactNativeWebView.postMessage(JSON.stringify({ dismiss: true }));
},
share() {
window.ReactNativeWebView.postMessage(
JSON.stringify({ shareUrl: window.location.href })
);
}
});

2
app/assets/stylesheets/common/foundation/variables.scss
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@ -80,6 +80,7 @@ $z-layers: (
"overlay": 1200
),
"fullscreen": 1150,
"mobile-footer": 1140,
"mobile-composer": 1100,
"header": 1000,
"tooltip": 600,
@ -129,6 +130,7 @@ $box-shadow: (
"card": 0 4px 14px rgba(0, 0, 0, 0.15),
"dropdown": 0 2px 3px 0 rgba(0, 0, 0, 0.2),
"header": 0 2px 4px -1px rgba(0, 0, 0, 0.25),
"mobile-footer": 0 2px 4px 1px rgba(0, 0, 0, 0.25),
"kbd": (
0 2px 0 rgba(0, 0, 0, 0.2),
0 0 0 1px dark-light-choose(#fff, #000) inset

1
app/assets/stylesheets/mobile.scss
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@ -30,6 +30,7 @@
@import "mobile/admin_report_counters";
@import "mobile/menu-panel";
@import "mobile/reviewables";
@import "mobile/footer";
// Import all component-specific files
@import "mobile/components/*";

3
app/assets/stylesheets/mobile/compose.scss
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@ -10,6 +10,7 @@
z-index: z("mobile-composer");
.reply-area {
padding: 0 10px;
padding-bottom: env(safe-area-inset-bottom);
@media screen and (max-width: 374px) {
padding: 0 5px;
}
@ -38,6 +39,8 @@
}
&.draft {
padding-bottom: env(safe-area-inset-bottom);
.toggle-toolbar,
.toggler {
top: 8px;

47
app/assets/stylesheets/mobile/footer.scss Normal file
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@ -0,0 +1,47 @@
// --------------------------------------------------
// Mobile footer (displayed in DiscourseHub app and PWAs)
// --------------------------------------------------
$footer-nav-height: 55px;
body.mobile-footer-nav-visible {
padding-bottom: $footer-nav-height + 15;
#topic-progress-wrapper,
#reply-control.draft {
bottom: $footer-nav-height;
}
}
.mobile-footer {
background-color: $header_background;
box-shadow: shadow("mobile-footer");
height: $footer-nav-height;
position: fixed;
bottom: -$footer-nav-height;
left: 0;
width: 100%;
z-index: z("mobile-footer");
transition: all linear 0.15s;
.d-icon {
color: $header_primary-low-mid;
}
&.visible {
bottom: 0px;
padding-bottom: env(safe-area-inset-bottom);
}
.mobile-footer-nav {
display: flex;
justify-content: "space-evenly";
@include unselectable;
button {
flex: 1;
margin: 12px;
&:disabled {
opacity: 0.6;
}
}
}
}

2
app/assets/stylesheets/mobile/topic.scss
View File

@ -51,6 +51,7 @@
bottom: 0;
z-index: z("timeline");
margin-right: 148px;
margin-bottom: env(safe-area-inset-bottom);
.topic-admin-menu-button-container .toggle-admin-menu {
height: 43px;
}
@ -105,7 +106,6 @@
background-color: $secondary;
color: $tertiary;
border: 1px solid $tertiary-low;
border-bottom: none;
width: 145px;
height: 42px;

2
app/views/layouts/_head.html.erb
View File

@ -9,7 +9,7 @@
<%- end %>
<meta name="theme-color" content="#<%= ColorScheme.hex_for_name('header_background', scheme_id) %>">
<% if mobile_view? %>
<meta name="viewport" content="width=device-width, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
<meta name="viewport" content="width=device-width, minimum-scale=1.0, user-scalable=yes, viewport-fit=cover">
<% else %>
<meta name="viewport" content="width=device-width, minimum-scale=1.0, maximum-scale=1.0, user-scalable=yes">
<% end %>

1
lib/svg_sprite/svg_sprite.rb
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@ -42,6 +42,7 @@ module SvgSprite
"check-circle",
"check-square",
"chevron-down",
"chevron-left",
"chevron-right",
"chevron-up",
"circle",