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(core) Allow left pane to auto-expand on mouse over

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Summary:
Tweak PagePanels to let the left pane automatically expand on mouse
over. This is to make pages more accessible when the panel is
collapsed.

In this context, when expanding, the left panel overlap the main
content, reducing visual clutter.

Test Plan: updated

Reviewers: jarek

Reviewed By: jarek

Subscribers: anaisconce, jarek

Differential Revision: https://phab.getgrist.com/D3516
pull/234/head
Cyprien P 2 years ago
parent c54dde3dba
commit 80f31bffc2
4 changed files with 189 additions and 23 deletions
Show Stats Download Patch File Download Diff File

2
app/client/lib/FocusLayer.ts
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@ -186,7 +186,7 @@ export class FocusLayer extends Disposable implements FocusLayerOptions {
* Because elements getting removed from the DOM don't always trigger 'blur' event, this also
* uses MutationObserver to watch for the element to get removed from DOM.
*/
function watchElementForBlur(elem: Element, callback: () => void) {
export function watchElementForBlur(elem: Element, callback: () => void) {
const maybeDone = () => {
if (document.activeElement !== elem) {
lis.dispose();

17
app/client/lib/sessionObs.ts
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@ -5,6 +5,10 @@
import {safeJsonParse} from 'app/common/gutil';
import {IDisposableOwner, Observable} from 'grainjs';
export interface SessionObs<T> extends Observable<T> {
pauseSaving(yesNo: boolean): void;
}
/**
* Creates and returns an Observable tied to sessionStorage, to make its value stick across
* reloads and navigation, but differ across browser tabs. E.g. whether a side pane is open.
@ -20,13 +24,19 @@ import {IDisposableOwner, Observable} from 'grainjs';
* import {StringUnion} from 'app/common/StringUnion';
* const SomeTab = StringUnion("foo", "bar", "baz");
* tab = createSessionObs(owner, "tab", "baz", SomeTab.guard); // Type Observable<"foo"|"bar"|"baz">
*
* You can disable saving to sessionStorage:
* panelWidth.pauseSaving(true);
* doStuff();
* panelWidth.pauseSaving(false);
*
*/
export function createSessionObs<T>(
owner: IDisposableOwner|null,
key: string,
_default: T,
isValid: (val: any) => val is T,
) {
): SessionObs<T> {
function fromString(value: string|null): T {
const parsed = value == null ? null : safeJsonParse(value, null);
return isValid(parsed) ? parsed : _default;
@ -34,9 +44,10 @@ export function createSessionObs<T>(
function toString(value: T): string|null {
return value === _default || !isValid(value) ? null : JSON.stringify(value);
}
let _pauseSaving = false;
const obs = Observable.create<T>(owner, fromString(window.sessionStorage.getItem(key)));
obs.addListener((value: T) => {
if (_pauseSaving) { return; }
const stored = toString(value);
if (stored == null) {
window.sessionStorage.removeItem(key);
@ -44,7 +55,7 @@ export function createSessionObs<T>(
window.sessionStorage.setItem(key, stored);
}
});
return obs;
return Object.assign(obs, {pauseSaving(yesNo: boolean) { _pauseSaving = yesNo; }});
}
/** Helper functions to check simple types, useful for the `isValid` argument to createSessionObs. */

6
app/client/ui/AppHeader.ts
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@ -138,7 +138,7 @@ const cssDropdownIcon = styled(icon, `
`);
const cssOrg = styled('div', `
display: flex;
display: none;
flex-grow: 1;
align-items: center;
max-width: calc(100% - 48px);
@ -149,6 +149,10 @@ const cssOrg = styled('div', `
&:hover {
background-color: ${colors.mediumGrey};
}
.${cssLeftPane.className}-open & {
display: flex;
}
`);
const cssOrgName = styled('div', `

187
app/client/ui/PagePanels.ts
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@ -2,13 +2,23 @@
* Note that it assumes the presence of cssVars.cssRootVars on <body>.
*/
import * as commands from 'app/client/components/commands';
import {watchElementForBlur} from 'app/client/lib/FocusLayer';
import {urlState} from "app/client/models/gristUrlState";
import {resizeFlexVHandle} from 'app/client/ui/resizeHandle';
import {transition, TransitionWatcher} from 'app/client/ui/transitions';
import {colors, cssHideForNarrowScreen, mediaNotSmall, mediaSmall} from 'app/client/ui2018/cssVars';
import {isNarrowScreenObs} from 'app/client/ui2018/cssVars';
import {icon} from 'app/client/ui2018/icons';
import {dom, DomArg, noTestId, Observable, styled, subscribe, TestId} from "grainjs";
import {dom, DomArg, MultiHolder, noTestId, Observable, styled, subscribe, TestId} from "grainjs";
import noop from 'lodash/noop';
import once from 'lodash/once';
import {SessionObs} from 'app/client/lib/sessionObs';
import debounce from 'lodash/debounce';
const AUTO_EXPAND_TIMEOUT_MS = 400;
// delay must be greater than the time needed for transientInput to update focus (ie: 10ms);
const DELAY_BEFORE_TESTING_FOCUS_CHANGE_MS = 12;
export interface PageSidePanel {
// Note that widths need to start out with a correct default in JS (having them in CSS is not
@ -38,10 +48,13 @@ export function pagePanels(page: PageContents) {
const left = page.leftPanel;
const right = page.rightPanel;
const onResize = page.onResize || (() => null);
const leftOverlap = Observable.create(null, false);
const dragResizer = Observable.create(null, false);
let lastLeftOpen = left.panelOpen.get();
let lastRightOpen = right?.panelOpen.get() || false;
let leftPaneDom: HTMLElement;
let onLeftTransitionFinish = noop;
// When switching to mobile mode, close panels; when switching to desktop, restore the
// last desktop state.
@ -62,6 +75,10 @@ export function pagePanels(page: PageContents) {
}
});
const pauseSavingLeft = (yesNo: boolean) => {
(left.panelOpen as SessionObs<boolean>)?.pauseSaving?.(yesNo);
};
const commandsGroup = commands.createGroup({
leftPanelOpen: () => new Promise((resolve) => {
const watcher = new TransitionWatcher(leftPaneDom);
@ -69,40 +86,125 @@ export function pagePanels(page: PageContents) {
left.panelOpen.set(true);
}),
}, null, true);
let contentWrapper: HTMLElement;
return cssPageContainer(
dom.autoDispose(sub1),
dom.autoDispose(sub2),
dom.autoDispose(commandsGroup),
dom.autoDispose(leftOverlap),
page.contentTop,
cssContentMain(
leftPaneDom = cssLeftPane(
testId('left-panel'),
cssTopHeader(left.header),
left.content,
cssOverflowContainer(
contentWrapper = cssLeftPanelContainer(
cssTopHeader(left.header),
left.content,
),
),
// Show plain border when the resize handle is hidden.
cssResizeDisabledBorder(
dom.hide((use) => use(left.panelOpen) && !use(leftOverlap)),
cssHideForNarrowScreen.cls(''),
testId('left-disabled-resizer'),
),
dom.style('width', (use) => use(left.panelOpen) ? use(left.panelWidth) + 'px' : ''),
// Opening/closing the left pane, with transitions.
cssLeftPane.cls('-open', left.panelOpen),
transition(use => (use(isNarrowScreenObs()) ? false : use(left.panelOpen)), {
prepare(elem, open) { elem.style.marginRight = (open ? -1 : 1) * (left.panelWidth.get() - 48) + 'px'; },
run(elem, open) { elem.style.marginRight = ''; },
finish: onResize,
prepare(elem, open) {
elem.style.width = (open ? 48 : left.panelWidth.get()) + 'px';
},
run(elem, open) {
elem.style.width = contentWrapper.style.width = (open ? left.panelWidth.get() : 48) + 'px';
},
finish() {
onResize();
contentWrapper.style.width = '';
onLeftTransitionFinish();
},
}),
// opening left panel on over
dom.on('mouseenter', (_ev, elem) => {
if (left.panelOpen.get()) { return; }
let isMouseInsideLeftPane = true;
let isFocusInsideLeftPane = false;
let isMouseDragging = false;
const owner = new MultiHolder();
const startExpansion = () => {
leftOverlap.set(true);
pauseSavingLeft(true); // prevents from updating state in the window storage
left.panelOpen.set(true);
onLeftTransitionFinish = noop;
watchBlur();
};
const startCollapse = () => {
left.panelOpen.set(false);
pauseSavingLeft(false);
// turns overlap off only when the transition finishes
onLeftTransitionFinish = once(() => leftOverlap.set(false));
clear();
};
const clear = () => {
if (owner.isDisposed()) { return; }
clearTimeout(timeoutId);
owner.dispose();
};
dom.onDisposeElem(elem, clear);
// updates isFocusInsideLeftPane and starts watch for blur on activeElement.
const watchBlur = debounce(() => {
if (owner.isDisposed()) { return; }
// console.warn('watchBlur', document.activeElement);
isFocusInsideLeftPane = Boolean(leftPaneDom.contains(document.activeElement) ||
document.activeElement?.closest('.grist-floating-menu'));
maybeStartCollapse();
if (document.activeElement) {
maybePatchDomAndChangeFocus(); // This is to support projects test environment
watchElementForBlur(document.activeElement, watchBlur);
}
}, DELAY_BEFORE_TESTING_FOCUS_CHANGE_MS);
// starts collapsed only if neither mouse nor focus are inside the left pane. Return true
// if started collapsed, false otherwise.
const maybeStartCollapse = () => {
if (!isMouseInsideLeftPane && !isFocusInsideLeftPane && !isMouseDragging) {
startCollapse();
}
};
// mouse events
const onMouseEvt = (evt: MouseEvent) => {
const rect = leftPaneDom.getBoundingClientRect();
isMouseInsideLeftPane = evt.clientX <= rect.right;
isMouseDragging = evt.buttons !== 0;
maybeStartCollapse();
};
owner.autoDispose(dom.onElem(document, 'mousemove', onMouseEvt));
owner.autoDispose(dom.onElem(document, 'mouseup', onMouseEvt));
// schedule start of expansion
const timeoutId = setTimeout(startExpansion, AUTO_EXPAND_TIMEOUT_MS);
}),
cssLeftPane.cls('-overlap', leftOverlap),
cssLeftPane.cls('-dragging', dragResizer),
),
// Resizer for the left pane.
// TODO: resizing to small size should collapse. possibly should allow expanding too
cssResizeFlexVHandle(
{target: 'left', onSave: (val) => { left.panelWidth.set(val); onResize(); }},
{target: 'left', onSave: (val) => { left.panelWidth.set(val); onResize();
leftPaneDom.style['width'] = val + 'px';
setTimeout(() => dragResizer.set(false), 0); },
onDrag: (val) => { dragResizer.set(true); }},
testId('left-resizer'),
dom.show(left.panelOpen),
cssHideForNarrowScreen.cls('')),
// Show plain border when the resize handle is hidden.
cssResizeDisabledBorder(
dom.hide(left.panelOpen),
dom.show((use) => use(left.panelOpen) && !use(leftOverlap)),
cssHideForNarrowScreen.cls('')),
cssMainPane(
@ -126,6 +228,7 @@ export function pagePanels(page: PageContents) {
),
),
page.contentMain,
cssMainPane.cls('-left-overlap', leftOverlap),
testId('main-pane'),
),
(right ? [
@ -236,8 +339,8 @@ export const cssLeftPane = styled(cssVBox, `
background-color: ${colors.lightGrey};
width: 48px;
margin-right: 0px;
overflow: hidden;
transition: margin-right 0.4s;
transition: width 0.4s;
will-change: width;
@media ${mediaSmall} {
& {
width: 240px;
@ -258,8 +361,6 @@ export const cssLeftPane = styled(cssVBox, `
}
&-open {
width: 240px;
min-width: 160px;
max-width: 320px;
}
@media print {
& {
@ -269,6 +370,23 @@ export const cssLeftPane = styled(cssVBox, `
.interface-light & {
display: none;
}
&-overlap {
position: fixed;
z-index: 10;
top: 0;
bottom: 0;
left: 0;
min-width: unset;
}
&-dragging {
transition: unset;
min-width: 160px;
max-width: 320px;
}
`);
const cssOverflowContainer = styled(cssVBox, `
overflow: hidden;
flex: 1 1 0px;
`);
const cssMainPane = styled(cssVBox, `
position: relative;
@ -276,6 +394,9 @@ const cssMainPane = styled(cssVBox, `
min-width: 0px;
background-color: white;
z-index: 1;
&-left-overlap {
margin-left: 48px;
}
`);
const cssRightPane = styled(cssVBox, `
position: relative;
@ -378,6 +499,11 @@ const cssResizeDisabledBorder = styled('div', `
width: 1px;
height: 100%;
background-color: ${colors.mediumGrey};
position: absolute;
top: 0;
bottom: 0;
right: -1px;
z-index: 2;
`);
const cssPanelOpener = styled(icon, `
flex: none;
@ -423,3 +549,28 @@ const cssContentOverlay = styled('div', `
}
}
`);
const cssLeftPanelContainer = styled('div', `
flex: 1 1 0px;
display: flex;
flex-direction: column;
`);
const cssHiddenInput = styled('input', `
position: absolute;
top: -100px;
left: 0;
width: 10px;
height: 10px;
font-size: 1;
z-index: -1;
`);
// watchElementForBlur does not work if focus is on body. Which never happens when running in Grist
// because focus is constantly given to the copypasteField. But it does happen when running inside a
// projects test. For that latter case we had a hidden <input> field to the dom and give it focus.
function maybePatchDomAndChangeFocus() {
if (document.activeElement?.matches('body')) {
const hiddenInput = cssHiddenInput();
document.body.appendChild(hiddenInput);
hiddenInput.focus();
}
}

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