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513 lines
16 KiB
513 lines
16 KiB
import {hoverTooltip} from 'app/client/ui/tooltips';
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import {isNarrowScreen, isNarrowScreenObs, theme, vars} from 'app/client/ui2018/cssVars';
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import {icon} from 'app/client/ui2018/icons';
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import {Disposable, dom, DomArg, DomContents, IDisposable, makeTestId, Observable, styled} from 'grainjs';
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const POPUP_INITIAL_PADDING_PX = 16;
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const POPUP_MIN_HEIGHT = 300;
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const POPUP_MAX_HEIGHT = 711;
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const POPUP_HEADER_HEIGHT = 30;
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const testId = makeTestId('test-floating-popup-');
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export interface PopupOptions {
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title?: () => DomContents;
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content?: () => DomContents;
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onClose?: () => void;
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closeButton?: boolean;
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autoHeight?: boolean;
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/** Defaults to false. */
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stopClickPropagationOnMove?: boolean;
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}
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export class FloatingPopup extends Disposable {
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protected _isMinimized = Observable.create(this, false);
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private _isFinishingMove = false;
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private _popupElement: HTMLElement | null = null;
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private _popupMinimizeButtonElement: HTMLElement | null = null;
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private _startX: number;
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private _startY: number;
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private _initialTop: number;
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private _initialBottom: number;
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private _initialLeft: number;
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private _resize = false;
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private _cursorGrab: IDisposable|null = null;
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constructor(protected _options: PopupOptions = {}, private _args: DomArg[] = []) {
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super();
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if (_options.stopClickPropagationOnMove){
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// weasel.js registers a 'click' listener that closes any open popups that
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// are outside the click target. We capture the click event here, stopping
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// propagation in a few scenarios where closing popups is undesirable.
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window.addEventListener('click', (ev) => {
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if (this._isFinishingMove) {
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ev.stopPropagation();
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this._isFinishingMove = false;
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return;
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}
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if (this._popupMinimizeButtonElement?.contains(ev.target as Node)) {
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ev.stopPropagation();
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this._minimizeOrMaximize();
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return;
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}
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}, {capture: true});
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}
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this._handleMouseDown = this._handleMouseDown.bind(this);
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this._handleMouseMove = this._handleMouseMove.bind(this);
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this._handleMouseUp = this._handleMouseUp.bind(this);
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this._handleTouchStart = this._handleTouchStart.bind(this);
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this._handleTouchMove = this._handleTouchMove.bind(this);
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this._handleTouchEnd = this._handleTouchEnd.bind(this);
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this._handleWindowResize = this._handleWindowResize.bind(this);
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this.autoDispose(isNarrowScreenObs().addListener(() => this._repositionPopup()));
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this.onDispose(() => {
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this._closePopup();
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this._cursorGrab?.dispose();
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});
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}
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public showPopup() {
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this._popupElement = this._buildPopup();
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document.body.appendChild(this._popupElement);
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const topPaddingPx = getTopPopupPaddingPx();
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const initialLeft = document.body.offsetWidth - this._popupElement.offsetWidth - POPUP_INITIAL_PADDING_PX;
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const initialTop = document.body.offsetHeight - this._popupElement.offsetHeight - topPaddingPx;
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this._popupElement.style.left = `${initialLeft}px`;
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this._popupElement.style.top = `${initialTop}px`;
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}
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protected _closePopup() {
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if (!this._popupElement) { return; }
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document.body.removeChild(this._popupElement);
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dom.domDispose(this._popupElement);
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this._popupElement = null;
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}
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protected _buildTitle(): DomContents {
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return this._options.title?.() ?? null;
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}
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protected _buildContent(): DomContents {
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return this._options.content?.() ?? null;
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}
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protected _buildArgs(): any {
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return this._args;
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}
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private _rememberPosition() {
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this._initialLeft = this._popupElement!.offsetLeft;
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this._initialTop = this._popupElement!.offsetTop;
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this._initialBottom = this._popupElement!.offsetTop + this._popupElement!.offsetHeight;
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}
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private _handleMouseDown(ev: MouseEvent) {
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if (ev.button !== 0) { return; } // Only handle left-click.
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this._startX = ev.clientX;
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this._startY = ev.clientY;
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this._rememberPosition();
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document.addEventListener('mousemove', this._handleMouseMove);
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document.addEventListener('mouseup', this._handleMouseUp);
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this._forceCursor();
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}
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private _handleTouchStart(ev: TouchEvent) {
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this._startX = ev.touches[0].clientX;
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this._startY = ev.touches[0].clientY;
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this._rememberPosition();
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document.addEventListener('touchmove', this._handleTouchMove);
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document.addEventListener('touchend', this._handleTouchEnd);
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this._resize = false;
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this._forceCursor();
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}
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private _handleTouchMove({touches}: TouchEvent) {
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this._handleMouseMove(touches[0]);
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}
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private _handleMouseMove({clientX, clientY}: MouseEvent | Touch) {
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if (this._resize) {
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this._handleResize(clientY);
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} else {
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this._handleMove(clientX, clientY);
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}
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}
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private _handleResize(clientY: number) {
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const deltaY = clientY - this._startY;
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if (this._resize && !isNarrowScreen()) {
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// First calculate the boundaries for the new top.
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// First just how much we can resize the popup.
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let minTop = this._initialBottom - POPUP_MAX_HEIGHT;
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let maxTop = this._initialBottom - POPUP_MIN_HEIGHT;
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// Now how far we can move top (leave at least some padding for mobile).
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minTop = Math.max(minTop, getTopPopupPaddingPx());
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// And bottom (we want the header to be visible)
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maxTop = Math.min(document.body.offsetHeight - POPUP_HEADER_HEIGHT - 2, maxTop);
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// Now get new top from those boundaries.
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const newTop = Math.max(minTop, Math.min(maxTop, this._initialTop + deltaY));
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// And calculate the new height.
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const newHeight = this._initialBottom - newTop;
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this._popupElement!.style.top = `${newTop}px`;
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this._popupElement!.style.setProperty('--height', `${newHeight}px`);
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return;
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}
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}
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private _handleMove(clientX: number, clientY: number) {
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// Last change in position (from last move).
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const deltaX = clientX - this._startX;
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const deltaY = clientY - this._startY;
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// Available space where we can put the popup (anchored at top left corner).
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const viewPort = {
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right: document.body.offsetWidth,
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bottom: document.body.offsetHeight,
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top: getTopPopupPaddingPx(),
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left: 0,
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};
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// Allow some extra space, where we can still move the popup outside the viewport.
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viewPort.right += this._popupElement!.offsetWidth - (POPUP_HEADER_HEIGHT + 2) * 4;
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viewPort.left -= this._popupElement!.offsetWidth - (POPUP_HEADER_HEIGHT + 2) * 4;
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viewPort.bottom += this._popupElement!.offsetHeight - POPUP_HEADER_HEIGHT - 2; // 2px border top
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let newLeft = this._initialLeft + deltaX;
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let newTop = this._initialTop + deltaY;
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const newRight = (val?: number) => {
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if (val !== undefined) { newLeft = val - this._popupElement!.offsetWidth; }
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return newLeft + this._popupElement!.offsetWidth;
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};
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const newBottom = (val?: number) => {
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if (val !== undefined) { newTop = val - this._popupElement!.offsetHeight; }
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return newTop + this._popupElement!.offsetHeight;
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};
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// Calculate new position in the padding area.
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if (newLeft < viewPort.left) { newLeft = viewPort.left; }
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if (newRight() > viewPort.right) { newRight(viewPort.right); }
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if (newTop < viewPort.top) { newTop = viewPort.top; }
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if (newBottom() > viewPort.bottom) { newBottom(viewPort.bottom); }
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this._popupElement!.style.left = `${newLeft}px`;
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this._popupElement!.style.top = `${newTop}px`;
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}
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private _handleMouseUp() {
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this._isFinishingMove = true;
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document.removeEventListener('mousemove', this._handleMouseMove);
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document.removeEventListener('mouseup', this._handleMouseUp);
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document.body.removeEventListener('mouseleave', this._handleMouseUp);
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this._handleMouseEnd();
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}
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private _handleTouchEnd() {
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document.removeEventListener('touchmove', this._handleTouchMove);
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document.removeEventListener('touchend', this._handleTouchEnd);
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document.body.removeEventListener('touchcancel', this._handleTouchEnd);
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this._handleMouseEnd();
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}
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private _handleMouseEnd() {
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this._resize = false;
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this._cursorGrab?.dispose();
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}
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private _handleWindowResize() {
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this._repositionPopup();
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}
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private _repositionPopup() {
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let newLeft = this._popupElement!.offsetLeft;
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let newTop = this._popupElement!.offsetTop;
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const topPaddingPx = getTopPopupPaddingPx();
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if (newLeft - POPUP_INITIAL_PADDING_PX < 0) { newLeft = POPUP_INITIAL_PADDING_PX; }
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if (newTop - topPaddingPx < 0) { newTop = topPaddingPx; }
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if (newLeft + POPUP_INITIAL_PADDING_PX > document.body.offsetWidth - this._popupElement!.offsetWidth) {
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newLeft = document.body.offsetWidth - this._popupElement!.offsetWidth - POPUP_INITIAL_PADDING_PX;
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}
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if (newTop + topPaddingPx > document.body.offsetHeight - this._popupElement!.offsetHeight) {
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newTop = document.body.offsetHeight - this._popupElement!.offsetHeight - topPaddingPx;
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}
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this._popupElement!.style.left = `${newLeft}px`;
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this._popupElement!.style.top = `${newTop}px`;
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}
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private _minimizeOrMaximize() {
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this._isMinimized.set(!this._isMinimized.get());
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this._repositionPopup();
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}
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private _buildPopup() {
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const body = cssPopup(
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{tabIndex: '-1'},
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cssPopup.cls('-auto', this._options.autoHeight ?? false),
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cssPopupHeader(
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cssBottomHandle(testId('move-handle')),
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dom.maybe(use => !use(this._isMinimized), () => {
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return cssResizeTopLayer(
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cssTopHandle(testId('resize-handle')),
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dom.on('mousedown', () => this._resize = true),
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dom.on('dblclick', (e) => {
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e.stopImmediatePropagation();
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this._popupElement?.style.setProperty('--height', `${POPUP_MAX_HEIGHT}px`);
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this._repositionPopup();
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})
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);
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}),
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dom.domComputed(this._isMinimized, isMinimized => {
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return [
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// Copy buttons on the left side of the header, to automatically
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// center the title.
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cssPopupButtons(
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!this._options.closeButton ? null : cssPopupHeaderButton(
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icon('CrossSmall'),
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),
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cssPopupHeaderButton(
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icon('Maximize')
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),
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dom.style('visibility', 'hidden'),
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),
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cssPopupTitle(
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cssPopupTitleText(this._buildTitle()),
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testId('title'),
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),
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cssPopupButtons(
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!this._options.closeButton ? null : cssPopupHeaderButton(
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icon('CrossSmall'),
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dom.on('click', () => {
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this._options.onClose?.() ?? this._closePopup();
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}),
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testId('close'),
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),
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this._popupMinimizeButtonElement = cssPopupHeaderButton(
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isMinimized ? icon('Maximize'): icon('Minimize'),
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hoverTooltip(isMinimized ? 'Maximize' : 'Minimize', {key: 'docTutorialTooltip'}),
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dom.on('click', () => this._minimizeOrMaximize()),
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testId('minimize-maximize'),
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),
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// Disable dragging when a button in the header is clicked.
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dom.on('mousedown', ev => ev.stopPropagation()),
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dom.on('touchstart', ev => ev.stopPropagation()),
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)
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];
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}),
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dom.on('mousedown', this._handleMouseDown),
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dom.on('touchstart', this._handleTouchStart),
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dom.on('dblclick', () => this._minimizeOrMaximize()),
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testId('header'),
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),
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cssPopupContent(
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this._buildContent(),
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cssPopupContent.cls('-minimized', this._isMinimized),
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),
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() => { window.addEventListener('resize', this._handleWindowResize); },
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dom.onDispose(() => {
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document.removeEventListener('mousemove', this._handleMouseMove);
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document.removeEventListener('mouseup', this._handleMouseUp);
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document.removeEventListener('touchmove', this._handleTouchMove);
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document.removeEventListener('touchend', this._handleTouchEnd);
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window.removeEventListener('resize', this._handleWindowResize);
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}),
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cssPopup.cls('-minimized', this._isMinimized),
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cssPopup.cls('-mobile', isNarrowScreenObs()),
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testId('window'),
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this._buildArgs()
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);
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// For auto-height popups, we need to reposition the popup when the content changes.
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// It is important for auto-grow and to prevent popup from going off-screen.
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if (this._options.autoHeight) {
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const observer = new MutationObserver(() => {
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this._repositionPopup();
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});
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observer.observe(body, {childList: true, subtree: true});
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dom.update(body,
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dom.onDispose(() => observer.disconnect())
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);
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}
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return body;
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}
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private _forceCursor() {
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this._cursorGrab?.dispose();
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const type = this._resize ? 'ns-resize' : 'grabbing';
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const cursorStyle: HTMLStyleElement = document.createElement('style');
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cursorStyle.innerHTML = `*{cursor: ${type}!important;}`;
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cursorStyle.id = 'cursor-style';
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document.head.appendChild(cursorStyle);
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const cursorOwner = {
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dispose() {
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if (this.isDisposed()) { return; }
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document.head.removeChild(cursorStyle);
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},
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isDisposed() {
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return !cursorStyle.isConnected;
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}
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};
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this._cursorGrab = cursorOwner;
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}
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}
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function getTopPopupPaddingPx(): number {
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// On mobile, we need additional padding to avoid blocking the top and bottom bars.
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return POPUP_INITIAL_PADDING_PX + (isNarrowScreen() ? 50 : 0);
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}
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const POPUP_HEIGHT = `min(var(--height), calc(100% - (2 * ${POPUP_INITIAL_PADDING_PX}px)))`;
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const POPUP_HEIGHT_MOBILE = `min(var(--height), calc(100% - (2 * ${POPUP_INITIAL_PADDING_PX}px) - (2 * 50px)))`;
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const POPUP_WIDTH = `min(436px, calc(100% - (2 * ${POPUP_INITIAL_PADDING_PX}px)))`;
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const cssPopup = styled('div', `
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position: fixed;
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display: flex;
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flex-direction: column;
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border: 2px solid ${theme.accentBorder};
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border-radius: 5px;
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z-index: ${vars.floatingPopupZIndex};
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--height: ${POPUP_MAX_HEIGHT}px;
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height: ${POPUP_HEIGHT};
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width: ${POPUP_WIDTH};
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min-height: ${POPUP_MIN_HEIGHT}px;
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background-color: ${theme.popupBg};
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box-shadow: 0 2px 18px 0 ${theme.popupInnerShadow}, 0 0 1px 0 ${theme.popupOuterShadow};
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outline: unset;
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&-mobile {
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height: ${POPUP_HEIGHT_MOBILE};
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}
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&-minimized {
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max-width: 225px;
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height: unset;
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min-height: unset;
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}
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&-minimized:not(&-mobile) {
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max-height: ${POPUP_HEIGHT};
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}
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&-minimized&-mobile {
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max-height: ${POPUP_HEIGHT_MOBILE};
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}
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&-auto {
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height: auto;
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max-height: ${POPUP_HEIGHT};
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min-height: unset;
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}
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&-auto&-mobile {
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max-height: ${POPUP_HEIGHT_MOBILE};
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}
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`);
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const cssPopupHeader = styled('div', `
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color: ${theme.tutorialsPopupHeaderFg};
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--icon-color: ${theme.tutorialsPopupHeaderFg};
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background-color: ${theme.accentBorder};
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align-items: center;
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flex-shrink: 0;
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cursor: grab;
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padding-left: 4px;
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padding-right: 4px;
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height: ${POPUP_HEADER_HEIGHT}px;
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user-select: none;
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display: flex;
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justify-content: space-between;
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position: relative;
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isolation: isolate;
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&:active {
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cursor: grabbing;
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}
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`);
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const cssPopupButtons = styled('div', `
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display: flex;
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column-gap: 8px;
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align-items: center;
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`);
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const cssPopupTitle = styled('div', `
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display: flex;
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justify-content: center;
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align-items: center;
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font-weight: 600;
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overflow: hidden;
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`);
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const cssPopupTitleText = styled('div', `
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overflow: hidden;
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white-space: nowrap;
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text-overflow: ellipsis;
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`);
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export const cssPopupBody = styled('div', `
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flex-grow: 1;
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padding: 24px;
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overflow: auto;
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`);
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const cssPopupHeaderButton = styled('div', `
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padding: 4px;
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border-radius: 4px;
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cursor: pointer;
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z-index: 1000;
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&:hover {
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background-color: ${theme.hover};
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}
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`);
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const cssResizeTopLayer = styled('div', `
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position: absolute;
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top: -6px;
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left: 0;
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right: 0;
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bottom: 28px;
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z-index: 500;
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cursor: ns-resize;
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`);
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const cssTopHandle = styled('div', `
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position: absolute;
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top: 0;
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left: 0;
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width: 1px;
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height: 1px;
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pointer-events: none;
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user-select: none;
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visibility: hidden;
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`);
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const cssBottomHandle = styled(cssTopHandle, `
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top: unset;
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bottom: 0;
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left: 0;
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`);
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const cssPopupContent = styled('div', `
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display: flex;
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flex-direction: column;
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flex-grow: 1;
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overflow: hidden;
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&-minimized {
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display: none;
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}
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`);
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