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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import { BrowserFeatures } from 'vs/base/browser/canIUse';
import * as DOM from 'vs/base/browser/dom';
import { Disposable, DisposableStore, IDisposable, toDisposable } from 'vs/base/common/lifecycle';
import * as platform from 'vs/base/common/platform';
import { Range } from 'vs/base/common/range';
import 'vs/css!./contextview';
export const enum ContextViewDOMPosition {
ABSOLUTE = 1,
FIXED,
FIXED_SHADOW
}
export interface IAnchor {
x: number;
y: number;
width?: number;
height?: number;
}
export const enum AnchorAlignment {
LEFT, RIGHT
}
export const enum AnchorPosition {
BELOW, ABOVE
}
export const enum AnchorAxisAlignment {
VERTICAL, HORIZONTAL
}
export interface IDelegate {
getAnchor(): HTMLElement | IAnchor;
render(container: HTMLElement): IDisposable | null;
focus?(): void;
layout?(): void;
anchorAlignment?: AnchorAlignment; // default: left
anchorPosition?: AnchorPosition; // default: below
anchorAxisAlignment?: AnchorAxisAlignment; // default: vertical
canRelayout?: boolean; // default: true
onDOMEvent?(e: Event, activeElement: HTMLElement): void;
onHide?(data?: unknown): void;
}
export interface IContextViewProvider {
showContextView(delegate: IDelegate, container?: HTMLElement): void;
hideContextView(): void;
layout(): void;
}
export interface IPosition {
top: number;
left: number;
}
export interface ISize {
width: number;
height: number;
}
export interface IView extends IPosition, ISize { }
export const enum LayoutAnchorPosition {
Before,
After
}
export enum LayoutAnchorMode {
AVOID,
ALIGN
}
export interface ILayoutAnchor {
offset: number;
size: number;
mode?: LayoutAnchorMode; // default: AVOID
position: LayoutAnchorPosition;
}
/**
* Lays out a one dimensional view next to an anchor in a viewport.
*
* @returns The view offset within the viewport.
*/
export function layout(viewportSize: number, viewSize: number, anchor: ILayoutAnchor): number {
const layoutAfterAnchorBoundary = anchor.mode === LayoutAnchorMode.ALIGN ? anchor.offset : anchor.offset + anchor.size;
const layoutBeforeAnchorBoundary = anchor.mode === LayoutAnchorMode.ALIGN ? anchor.offset + anchor.size : anchor.offset;
if (anchor.position === LayoutAnchorPosition.Before) {
if (viewSize <= viewportSize - layoutAfterAnchorBoundary) {
return layoutAfterAnchorBoundary; // happy case, lay it out after the anchor
}
if (viewSize <= layoutBeforeAnchorBoundary) {
return layoutBeforeAnchorBoundary - viewSize; // ok case, lay it out before the anchor
}
return Math.max(viewportSize - viewSize, 0); // sad case, lay it over the anchor
} else {
if (viewSize <= layoutBeforeAnchorBoundary) {
return layoutBeforeAnchorBoundary - viewSize; // happy case, lay it out before the anchor
}
if (viewSize <= viewportSize - layoutAfterAnchorBoundary) {
return layoutAfterAnchorBoundary; // ok case, lay it out after the anchor
}
return 0; // sad case, lay it over the anchor
}
}
export class ContextView extends Disposable {
private static readonly BUBBLE_UP_EVENTS = ['click', 'keydown', 'focus', 'blur'];
private static readonly BUBBLE_DOWN_EVENTS = ['click'];
private container: HTMLElement | null = null;
private view: HTMLElement;
private useFixedPosition: boolean;
private useShadowDOM: boolean;
private delegate: IDelegate | null = null;
private toDisposeOnClean: IDisposable = Disposable.None;
private toDisposeOnSetContainer: IDisposable = Disposable.None;
private shadowRoot: ShadowRoot | null = null;
private shadowRootHostElement: HTMLElement | null = null;
constructor(container: HTMLElement | null, domPosition: ContextViewDOMPosition) {
super();
this.view = DOM.$('.context-view');
this.useFixedPosition = false;
this.useShadowDOM = false;
DOM.hide(this.view);
this.setContainer(container, domPosition);
this._register(toDisposable(() => this.setContainer(null, ContextViewDOMPosition.ABSOLUTE)));
}
setContainer(container: HTMLElement | null, domPosition: ContextViewDOMPosition): void {
if (this.container) {
this.toDisposeOnSetContainer.dispose();
if (this.shadowRoot) {
this.shadowRoot.removeChild(this.view);
this.shadowRoot = null;
this.shadowRootHostElement?.remove();
this.shadowRootHostElement = null;
} else {
this.container.removeChild(this.view);
}
this.container = null;
}
if (container) {
this.container = container;
this.useFixedPosition = domPosition !== ContextViewDOMPosition.ABSOLUTE;
this.useShadowDOM = domPosition === ContextViewDOMPosition.FIXED_SHADOW;
if (this.useShadowDOM) {
this.shadowRootHostElement = DOM.$('.shadow-root-host');
this.container.appendChild(this.shadowRootHostElement);
this.shadowRoot = this.shadowRootHostElement.attachShadow({ mode: 'open' });
const style = document.createElement('style');
style.textContent = SHADOW_ROOT_CSS;
this.shadowRoot.appendChild(style);
this.shadowRoot.appendChild(this.view);
this.shadowRoot.appendChild(DOM.$('slot'));
} else {
this.container.appendChild(this.view);
}
const toDisposeOnSetContainer = new DisposableStore();
ContextView.BUBBLE_UP_EVENTS.forEach(event => {
toDisposeOnSetContainer.add(DOM.addStandardDisposableListener(this.container!, event, (e: Event) => {
this.onDOMEvent(e, false);
}));
});
ContextView.BUBBLE_DOWN_EVENTS.forEach(event => {
toDisposeOnSetContainer.add(DOM.addStandardDisposableListener(this.container!, event, (e: Event) => {
this.onDOMEvent(e, true);
}, true));
});
this.toDisposeOnSetContainer = toDisposeOnSetContainer;
}
}
show(delegate: IDelegate): void {
if (this.isVisible()) {
this.hide();
}
// Show static box
DOM.clearNode(this.view);
this.view.className = 'context-view';
this.view.style.top = '0px';
this.view.style.left = '0px';
this.view.style.zIndex = '2500';
this.view.style.position = this.useFixedPosition ? 'fixed' : 'absolute';
DOM.show(this.view);
// Render content
this.toDisposeOnClean = delegate.render(this.view) || Disposable.None;
// Set active delegate
this.delegate = delegate;
// Layout
this.doLayout();
// Focus
this.delegate.focus?.();
}
getViewElement(): HTMLElement {
return this.view;
}
layout(): void {
if (!this.isVisible()) {
return;
}
if (this.delegate!.canRelayout === false && !(platform.isIOS && BrowserFeatures.pointerEvents)) {
this.hide();
return;
}
if (this.delegate!.layout) {
this.delegate!.layout!();
}
this.doLayout();
}
private doLayout(): void {
// Check that we still have a delegate - this.delegate.layout may have hidden
if (!this.isVisible()) {
return;
}
// Get anchor
const anchor = this.delegate!.getAnchor();
// Compute around
let around: IView;
// Get the element's position and size (to anchor the view)
if (DOM.isHTMLElement(anchor)) {
const elementPosition = DOM.getDomNodePagePosition(anchor);
// In areas where zoom is applied to the element or its ancestors, we need to adjust the size of the element
// e.g. The title bar has counter zoom behavior meaning it applies the inverse of zoom level.
// Window Zoom Level: 1.5, Title Bar Zoom: 1/1.5, Size Multiplier: 1.5
const zoom = DOM.getDomNodeZoomLevel(anchor);
around = {
top: elementPosition.top * zoom,
left: elementPosition.left * zoom,
width: elementPosition.width * zoom,
height: elementPosition.height * zoom
};
} else {
around = {
top: anchor.y,
left: anchor.x,
width: anchor.width || 1,
height: anchor.height || 2
};
}
const viewSizeWidth = DOM.getTotalWidth(this.view);
const viewSizeHeight = DOM.getTotalHeight(this.view);
const anchorPosition = this.delegate!.anchorPosition || AnchorPosition.BELOW;
const anchorAlignment = this.delegate!.anchorAlignment || AnchorAlignment.LEFT;
const anchorAxisAlignment = this.delegate!.anchorAxisAlignment || AnchorAxisAlignment.VERTICAL;
let top: number;
let left: number;
if (anchorAxisAlignment === AnchorAxisAlignment.VERTICAL) {
const verticalAnchor: ILayoutAnchor = { offset: around.top - window.pageYOffset, size: around.height, position: anchorPosition === AnchorPosition.BELOW ? LayoutAnchorPosition.Before : LayoutAnchorPosition.After };
const horizontalAnchor: ILayoutAnchor = { offset: around.left, size: around.width, position: anchorAlignment === AnchorAlignment.LEFT ? LayoutAnchorPosition.Before : LayoutAnchorPosition.After, mode: LayoutAnchorMode.ALIGN };
top = layout(window.innerHeight, viewSizeHeight, verticalAnchor) + window.pageYOffset;
// if view intersects vertically with anchor, we must avoid the anchor
if (Range.intersects({ start: top, end: top + viewSizeHeight }, { start: verticalAnchor.offset, end: verticalAnchor.offset + verticalAnchor.size })) {
horizontalAnchor.mode = LayoutAnchorMode.AVOID;
}
left = layout(window.innerWidth, viewSizeWidth, horizontalAnchor);
} else {
const horizontalAnchor: ILayoutAnchor = { offset: around.left, size: around.width, position: anchorAlignment === AnchorAlignment.LEFT ? LayoutAnchorPosition.Before : LayoutAnchorPosition.After };
const verticalAnchor: ILayoutAnchor = { offset: around.top, size: around.height, position: anchorPosition === AnchorPosition.BELOW ? LayoutAnchorPosition.Before : LayoutAnchorPosition.After, mode: LayoutAnchorMode.ALIGN };
left = layout(window.innerWidth, viewSizeWidth, horizontalAnchor);
// if view intersects horizontally with anchor, we must avoid the anchor
if (Range.intersects({ start: left, end: left + viewSizeWidth }, { start: horizontalAnchor.offset, end: horizontalAnchor.offset + horizontalAnchor.size })) {
verticalAnchor.mode = LayoutAnchorMode.AVOID;
}
top = layout(window.innerHeight, viewSizeHeight, verticalAnchor) + window.pageYOffset;
}
this.view.classList.remove('top', 'bottom', 'left', 'right');
this.view.classList.add(anchorPosition === AnchorPosition.BELOW ? 'bottom' : 'top');
this.view.classList.add(anchorAlignment === AnchorAlignment.LEFT ? 'left' : 'right');
this.view.classList.toggle('fixed', this.useFixedPosition);
const containerPosition = DOM.getDomNodePagePosition(this.container!);
this.view.style.top = `${top - (this.useFixedPosition ? DOM.getDomNodePagePosition(this.view).top : containerPosition.top)}px`;
this.view.style.left = `${left - (this.useFixedPosition ? DOM.getDomNodePagePosition(this.view).left : containerPosition.left)}px`;
this.view.style.width = 'initial';
}
hide(data?: unknown): void {
const delegate = this.delegate;
this.delegate = null;
if (delegate?.onHide) {
delegate.onHide(data);
}
this.toDisposeOnClean.dispose();
DOM.hide(this.view);
}
private isVisible(): boolean {
return !!this.delegate;
}
private onDOMEvent(e: Event, onCapture: boolean): void {
if (this.delegate) {
if (this.delegate.onDOMEvent) {
this.delegate.onDOMEvent(e, <HTMLElement>document.activeElement);
} else if (onCapture && !DOM.isAncestor(<HTMLElement>e.target, this.container)) {
this.hide();
}
}
}
override dispose(): void {
this.hide();
super.dispose();
}
}
const SHADOW_ROOT_CSS = /* css */ `
:host {
all: initial; /* 1st rule so subsequent properties are reset. */
}
@font-face {
font-family: "codicon";
font-display: block;
src: url("./codicon.ttf?5d4d76ab2ce5108968ad644d591a16a6") format("truetype");
}
.codicon[class*='codicon-'] {
font: normal normal normal 16px/1 codicon;
display: inline-block;
text-decoration: none;
text-rendering: auto;
text-align: center;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
user-select: none;
-webkit-user-select: none;
-ms-user-select: none;
}
:host {
font-family: -apple-system, BlinkMacSystemFont, "Segoe WPC", "Segoe UI", "HelveticaNeue-Light", system-ui, "Ubuntu", "Droid Sans", sans-serif;
}
:host-context(.mac) { font-family: -apple-system, BlinkMacSystemFont, sans-serif; }
:host-context(.mac:lang(zh-Hans)) { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", sans-serif; }
:host-context(.mac:lang(zh-Hant)) { font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", sans-serif; }
:host-context(.mac:lang(ja)) { font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic Pro", sans-serif; }
:host-context(.mac:lang(ko)) { font-family: -apple-system, BlinkMacSystemFont, "Nanum Gothic", "Apple SD Gothic Neo", "AppleGothic", sans-serif; }
:host-context(.windows) { font-family: "Segoe WPC", "Segoe UI", sans-serif; }
:host-context(.windows:lang(zh-Hans)) { font-family: "Segoe WPC", "Segoe UI", "Microsoft YaHei", sans-serif; }
:host-context(.windows:lang(zh-Hant)) { font-family: "Segoe WPC", "Segoe UI", "Microsoft Jhenghei", sans-serif; }
:host-context(.windows:lang(ja)) { font-family: "Segoe WPC", "Segoe UI", "Yu Gothic UI", "Meiryo UI", sans-serif; }
:host-context(.windows:lang(ko)) { font-family: "Segoe WPC", "Segoe UI", "Malgun Gothic", "Dotom", sans-serif; }
:host-context(.linux) { font-family: system-ui, "Ubuntu", "Droid Sans", sans-serif; }
:host-context(.linux:lang(zh-Hans)) { font-family: system-ui, "Ubuntu", "Droid Sans", "Source Han Sans SC", "Source Han Sans CN", "Source Han Sans", sans-serif; }
:host-context(.linux:lang(zh-Hant)) { font-family: system-ui, "Ubuntu", "Droid Sans", "Source Han Sans TC", "Source Han Sans TW", "Source Han Sans", sans-serif; }
:host-context(.linux:lang(ja)) { font-family: system-ui, "Ubuntu", "Droid Sans", "Source Han Sans J", "Source Han Sans JP", "Source Han Sans", sans-serif; }
:host-context(.linux:lang(ko)) { font-family: system-ui, "Ubuntu", "Droid Sans", "Source Han Sans K", "Source Han Sans JR", "Source Han Sans", "UnDotum", "FBaekmuk Gulim", sans-serif; }
`;
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