/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
import * as browser from './browser.js';
import { BrowserFeatures } from './canIUse.js';
import { StandardKeyboardEvent } from './keyboardEvent.js';
import { StandardMouseEvent } from './mouseEvent.js';
import { AbstractIdleValue, IntervalTimer, _runWhenIdle } from '../common/async.js';
import { onUnexpectedError } from '../common/errors.js';
import * as event from '../common/event.js';
import * as dompurify from './dompurify/dompurify.js';
import { Disposable, DisposableStore, toDisposable } from '../common/lifecycle.js';
import { FileAccess, RemoteAuthorities } from '../common/network.js';
import * as platform from '../common/platform.js';
import { hash } from '../common/hash.js';
import { ensureCodeWindow, mainWindow } from './window.js';
//# region Multi-Window Support Utilities
export const { registerWindow, getWindow, getDocument, getWindows, getWindowsCount, getWindowId, getWindowById, hasWindow, onDidRegisterWindow, onWillUnregisterWindow, onDidUnregisterWindow } = (function () {
    const windows = new Map();
    ensureCodeWindow(mainWindow, 1);
    const mainWindowRegistration = { window: mainWindow, disposables: new DisposableStore() };
    windows.set(mainWindow.vscodeWindowId, mainWindowRegistration);
    const onDidRegisterWindow = new event.Emitter();
    const onDidUnregisterWindow = new event.Emitter();
    const onWillUnregisterWindow = new event.Emitter();
    function getWindowById(windowId, fallbackToMain) {
        const window = typeof windowId === 'number' ? windows.get(windowId) : undefined;
        return window ?? (fallbackToMain ? mainWindowRegistration : undefined);
    }
    return {
        onDidRegisterWindow: onDidRegisterWindow.event,
        onWillUnregisterWindow: onWillUnregisterWindow.event,
        onDidUnregisterWindow: onDidUnregisterWindow.event,
        registerWindow(window) {
            if (windows.has(window.vscodeWindowId)) {
                return Disposable.None;
            }
            const disposables = new DisposableStore();
            const registeredWindow = {
                window,
                disposables: disposables.add(new DisposableStore())
            };
            windows.set(window.vscodeWindowId, registeredWindow);
            disposables.add(toDisposable(() => {
                windows.delete(window.vscodeWindowId);
                onDidUnregisterWindow.fire(window);
            }));
            disposables.add(addDisposableListener(window, EventType.BEFORE_UNLOAD, () => {
                onWillUnregisterWindow.fire(window);
            }));
            onDidRegisterWindow.fire(registeredWindow);
            return disposables;
        },
        getWindows() {
            return windows.values();
        },
        getWindowsCount() {
            return windows.size;
        },
        getWindowId(targetWindow) {
            return targetWindow.vscodeWindowId;
        },
        hasWindow(windowId) {
            return windows.has(windowId);
        },
        getWindowById,
        getWindow(e) {
            const candidateNode = e;
            if (candidateNode?.ownerDocument?.defaultView) {
                return candidateNode.ownerDocument.defaultView.window;
            }
            const candidateEvent = e;
            if (candidateEvent?.view) {
                return candidateEvent.view.window;
            }
            return mainWindow;
        },
        getDocument(e) {
            const candidateNode = e;
            return getWindow(candidateNode).document;
        }
    };
})();
//#endregion
export function clearNode(node) {
    while (node.firstChild) {
        node.firstChild.remove();
    }
}
class DomListener {
    constructor(node, type, handler, options) {
        this._node = node;
        this._type = type;
        this._handler = handler;
        this._options = (options || false);
        this._node.addEventListener(this._type, this._handler, this._options);
    }
    dispose() {
        if (!this._handler) {
            // Already disposed
            return;
        }
        this._node.removeEventListener(this._type, this._handler, this._options);
        // Prevent leakers from holding on to the dom or handler func
        this._node = null;
        this._handler = null;
    }
}
export function addDisposableListener(node, type, handler, useCaptureOrOptions) {
    return new DomListener(node, type, handler, useCaptureOrOptions);
}
function _wrapAsStandardMouseEvent(targetWindow, handler) {
    return function (e) {
        return handler(new StandardMouseEvent(targetWindow, e));
    };
}
function _wrapAsStandardKeyboardEvent(handler) {
    return function (e) {
        return handler(new StandardKeyboardEvent(e));
    };
}
export const addStandardDisposableListener = function addStandardDisposableListener(node, type, handler, useCapture) {
    let wrapHandler = handler;
    if (type === 'click' || type === 'mousedown' || type === 'contextmenu') {
        wrapHandler = _wrapAsStandardMouseEvent(getWindow(node), handler);
    }
    else if (type === 'keydown' || type === 'keypress' || type === 'keyup') {
        wrapHandler = _wrapAsStandardKeyboardEvent(handler);
    }
    return addDisposableListener(node, type, wrapHandler, useCapture);
};
export const addStandardDisposableGenericMouseDownListener = function addStandardDisposableListener(node, handler, useCapture) {
    const wrapHandler = _wrapAsStandardMouseEvent(getWindow(node), handler);
    return addDisposableGenericMouseDownListener(node, wrapHandler, useCapture);
};
export const addStandardDisposableGenericMouseUpListener = function addStandardDisposableListener(node, handler, useCapture) {
    const wrapHandler = _wrapAsStandardMouseEvent(getWindow(node), handler);
    return addDisposableGenericMouseUpListener(node, wrapHandler, useCapture);
};
export function addDisposableGenericMouseDownListener(node, handler, useCapture) {
    return addDisposableListener(node, platform.isIOS && BrowserFeatures.pointerEvents ? EventType.POINTER_DOWN : EventType.MOUSE_DOWN, handler, useCapture);
}
export function addDisposableGenericMouseUpListener(node, handler, useCapture) {
    return addDisposableListener(node, platform.isIOS && BrowserFeatures.pointerEvents ? EventType.POINTER_UP : EventType.MOUSE_UP, handler, useCapture);
}
/**
 * Execute the callback the next time the browser is idle, returning an
 * {@link IDisposable} that will cancel the callback when disposed. This wraps
 * [requestIdleCallback] so it will fallback to [setTimeout] if the environment
 * doesn't support it.
 *
 * @param targetWindow The window for which to run the idle callback
 * @param callback The callback to run when idle, this includes an
 * [IdleDeadline] that provides the time alloted for the idle callback by the
 * browser. Not respecting this deadline will result in a degraded user
 * experience.
 * @param timeout A timeout at which point to queue no longer wait for an idle
 * callback but queue it on the regular event loop (like setTimeout). Typically
 * this should not be used.
 *
 * [IdleDeadline]: https://developer.mozilla.org/en-US/docs/Web/API/IdleDeadline
 * [requestIdleCallback]: https://developer.mozilla.org/en-US/docs/Web/API/Window/requestIdleCallback
 * [setTimeout]: https://developer.mozilla.org/en-US/docs/Web/API/Window/setTimeout
 */
export function runWhenWindowIdle(targetWindow, callback, timeout) {
    return _runWhenIdle(targetWindow, callback, timeout);
}
/**
 * An implementation of the "idle-until-urgent"-strategy as introduced
 * here: https://philipwalton.com/articles/idle-until-urgent/
 */
export class WindowIdleValue extends AbstractIdleValue {
    constructor(targetWindow, executor) {
        super(targetWindow, executor);
    }
}
/**
 * Schedule a callback to be run at the next animation frame.
 * This allows multiple parties to register callbacks that should run at the next animation frame.
 * If currently in an animation frame, `runner` will be executed immediately.
 * @return token that can be used to cancel the scheduled runner (only if `runner` was not executed immediately).
 */
export let runAtThisOrScheduleAtNextAnimationFrame;
/**
 * Schedule a callback to be run at the next animation frame.
 * This allows multiple parties to register callbacks that should run at the next animation frame.
 * If currently in an animation frame, `runner` will be executed at the next animation frame.
 * @return token that can be used to cancel the scheduled runner.
 */
export let scheduleAtNextAnimationFrame;
export class WindowIntervalTimer extends IntervalTimer {
    /**
     *
     * @param node The optional node from which the target window is determined
     */
    constructor(node) {
        super();
        this.defaultTarget = node && getWindow(node);
    }
    cancelAndSet(runner, interval, targetWindow) {
        return super.cancelAndSet(runner, interval, targetWindow ?? this.defaultTarget);
    }
}
class AnimationFrameQueueItem {
    constructor(runner, priority = 0) {
        this._runner = runner;
        this.priority = priority;
        this._canceled = false;
    }
    dispose() {
        this._canceled = true;
    }
    execute() {
        if (this._canceled) {
            return;
        }
        try {
            this._runner();
        }
        catch (e) {
            onUnexpectedError(e);
        }
    }
    // Sort by priority (largest to lowest)
    static sort(a, b) {
        return b.priority - a.priority;
    }
}
(function () {
    /**
     * The runners scheduled at the next animation frame
     */
    const NEXT_QUEUE = new Map();
    /**
     * The runners scheduled at the current animation frame
     */
    const CURRENT_QUEUE = new Map();
    /**
     * A flag to keep track if the native requestAnimationFrame was already called
     */
    const animFrameRequested = new Map();
    /**
     * A flag to indicate if currently handling a native requestAnimationFrame callback
     */
    const inAnimationFrameRunner = new Map();
    const animationFrameRunner = (targetWindowId) => {
        animFrameRequested.set(targetWindowId, false);
        const currentQueue = NEXT_QUEUE.get(targetWindowId) ?? [];
        CURRENT_QUEUE.set(targetWindowId, currentQueue);
        NEXT_QUEUE.set(targetWindowId, []);
        inAnimationFrameRunner.set(targetWindowId, true);
        while (currentQueue.length > 0) {
            currentQueue.sort(AnimationFrameQueueItem.sort);
            const top = currentQueue.shift();
            top.execute();
        }
        inAnimationFrameRunner.set(targetWindowId, false);
    };
    scheduleAtNextAnimationFrame = (targetWindow, runner, priority = 0) => {
        const targetWindowId = getWindowId(targetWindow);
        const item = new AnimationFrameQueueItem(runner, priority);
        let nextQueue = NEXT_QUEUE.get(targetWindowId);
        if (!nextQueue) {
            nextQueue = [];
            NEXT_QUEUE.set(targetWindowId, nextQueue);
        }
        nextQueue.push(item);
        if (!animFrameRequested.get(targetWindowId)) {
            animFrameRequested.set(targetWindowId, true);
            targetWindow.requestAnimationFrame(() => animationFrameRunner(targetWindowId));
        }
        return item;
    };
    runAtThisOrScheduleAtNextAnimationFrame = (targetWindow, runner, priority) => {
        const targetWindowId = getWindowId(targetWindow);
        if (inAnimationFrameRunner.get(targetWindowId)) {
            const item = new AnimationFrameQueueItem(runner, priority);
            let currentQueue = CURRENT_QUEUE.get(targetWindowId);
            if (!currentQueue) {
                currentQueue = [];
                CURRENT_QUEUE.set(targetWindowId, currentQueue);
            }
            currentQueue.push(item);
            return item;
        }
        else {
            return scheduleAtNextAnimationFrame(targetWindow, runner, priority);
        }
    };
})();
export function getComputedStyle(el) {
    return getWindow(el).getComputedStyle(el, null);
}
export function getClientArea(element, fallback) {
    const elWindow = getWindow(element);
    const elDocument = elWindow.document;
    // Try with DOM clientWidth / clientHeight
    if (element !== elDocument.body) {
        return new Dimension(element.clientWidth, element.clientHeight);
    }
    // If visual view port exits and it's on mobile, it should be used instead of window innerWidth / innerHeight, or document.body.clientWidth / document.body.clientHeight
    if (platform.isIOS && elWindow?.visualViewport) {
        return new Dimension(elWindow.visualViewport.width, elWindow.visualViewport.height);
    }
    // Try innerWidth / innerHeight
    if (elWindow?.innerWidth && elWindow.innerHeight) {
        return new Dimension(elWindow.innerWidth, elWindow.innerHeight);
    }
    // Try with document.body.clientWidth / document.body.clientHeight
    if (elDocument.body && elDocument.body.clientWidth && elDocument.body.clientHeight) {
        return new Dimension(elDocument.body.clientWidth, elDocument.body.clientHeight);
    }
    // Try with document.documentElement.clientWidth / document.documentElement.clientHeight
    if (elDocument.documentElement && elDocument.documentElement.clientWidth && elDocument.documentElement.clientHeight) {
        return new Dimension(elDocument.documentElement.clientWidth, elDocument.documentElement.clientHeight);
    }
    if (fallback) {
        return getClientArea(fallback);
    }
    throw new Error('Unable to figure out browser width and height');
}
class SizeUtils {
    // Adapted from WinJS
    // Converts a CSS positioning string for the specified element to pixels.
    static convertToPixels(element, value) {
        return parseFloat(value) || 0;
    }
    static getDimension(element, cssPropertyName, jsPropertyName) {
        const computedStyle = getComputedStyle(element);
        const value = computedStyle ? computedStyle.getPropertyValue(cssPropertyName) : '0';
        return SizeUtils.convertToPixels(element, value);
    }
    static getBorderLeftWidth(element) {
        return SizeUtils.getDimension(element, 'border-left-width', 'borderLeftWidth');
    }
    static getBorderRightWidth(element) {
        return SizeUtils.getDimension(element, 'border-right-width', 'borderRightWidth');
    }
    static getBorderTopWidth(element) {
        return SizeUtils.getDimension(element, 'border-top-width', 'borderTopWidth');
    }
    static getBorderBottomWidth(element) {
        return SizeUtils.getDimension(element, 'border-bottom-width', 'borderBottomWidth');
    }
    static getPaddingLeft(element) {
        return SizeUtils.getDimension(element, 'padding-left', 'paddingLeft');
    }
    static getPaddingRight(element) {
        return SizeUtils.getDimension(element, 'padding-right', 'paddingRight');
    }
    static getPaddingTop(element) {
        return SizeUtils.getDimension(element, 'padding-top', 'paddingTop');
    }
    static getPaddingBottom(element) {
        return SizeUtils.getDimension(element, 'padding-bottom', 'paddingBottom');
    }
    static getMarginLeft(element) {
        return SizeUtils.getDimension(element, 'margin-left', 'marginLeft');
    }
    static getMarginTop(element) {
        return SizeUtils.getDimension(element, 'margin-top', 'marginTop');
    }
    static getMarginRight(element) {
        return SizeUtils.getDimension(element, 'margin-right', 'marginRight');
    }
    static getMarginBottom(element) {
        return SizeUtils.getDimension(element, 'margin-bottom', 'marginBottom');
    }
}
export class Dimension {
    static { this.None = new Dimension(0, 0); }
    constructor(width, height) {
        this.width = width;
        this.height = height;
    }
    with(width = this.width, height = this.height) {
        if (width !== this.width || height !== this.height) {
            return new Dimension(width, height);
        }
        else {
            return this;
        }
    }
    static is(obj) {
        return typeof obj === 'object' && typeof obj.height === 'number' && typeof obj.width === 'number';
    }
    static lift(obj) {
        if (obj instanceof Dimension) {
            return obj;
        }
        else {
            return new Dimension(obj.width, obj.height);
        }
    }
    static equals(a, b) {
        if (a === b) {
            return true;
        }
        if (!a || !b) {
            return false;
        }
        return a.width === b.width && a.height === b.height;
    }
}
export function getTopLeftOffset(element) {
    // Adapted from WinJS.Utilities.getPosition
    // and added borders to the mix
    let offsetParent = element.offsetParent;
    let top = element.offsetTop;
    let left = element.offsetLeft;
    while ((element = element.parentNode) !== null
        && element !== element.ownerDocument.body
        && element !== element.ownerDocument.documentElement) {
        top -= element.scrollTop;
        const c = isShadowRoot(element) ? null : getComputedStyle(element);
        if (c) {
            left -= c.direction !== 'rtl' ? element.scrollLeft : -element.scrollLeft;
        }
        if (element === offsetParent) {
            left += SizeUtils.getBorderLeftWidth(element);
            top += SizeUtils.getBorderTopWidth(element);
            top += element.offsetTop;
            left += element.offsetLeft;
            offsetParent = element.offsetParent;
        }
    }
    return {
        left: left,
        top: top
    };
}
export function size(element, width, height) {
    if (typeof width === 'number') {
        element.style.width = `${width}px`;
    }
    if (typeof height === 'number') {
        element.style.height = `${height}px`;
    }
}
/**
 * Returns the position of a dom node relative to the entire page.
 */
export function getDomNodePagePosition(domNode) {
    const bb = domNode.getBoundingClientRect();
    const window = getWindow(domNode);
    return {
        left: bb.left + window.scrollX,
        top: bb.top + window.scrollY,
        width: bb.width,
        height: bb.height
    };
}
/**
 * Returns the effective zoom on a given element before window zoom level is applied
 */
export function getDomNodeZoomLevel(domNode) {
    let testElement = domNode;
    let zoom = 1.0;
    do {
        const elementZoomLevel = getComputedStyle(testElement).zoom;
        if (elementZoomLevel !== null && elementZoomLevel !== undefined && elementZoomLevel !== '1') {
            zoom *= elementZoomLevel;
        }
        testElement = testElement.parentElement;
    } while (testElement !== null && testElement !== testElement.ownerDocument.documentElement);
    return zoom;
}
// Adapted from WinJS
// Gets the width of the element, including margins.
export function getTotalWidth(element) {
    const margin = SizeUtils.getMarginLeft(element) + SizeUtils.getMarginRight(element);
    return element.offsetWidth + margin;
}
export function getContentWidth(element) {
    const border = SizeUtils.getBorderLeftWidth(element) + SizeUtils.getBorderRightWidth(element);
    const padding = SizeUtils.getPaddingLeft(element) + SizeUtils.getPaddingRight(element);
    return element.offsetWidth - border - padding;
}
// Adapted from WinJS
// Gets the height of the content of the specified element. The content height does not include borders or padding.
export function getContentHeight(element) {
    const border = SizeUtils.getBorderTopWidth(element) + SizeUtils.getBorderBottomWidth(element);
    const padding = SizeUtils.getPaddingTop(element) + SizeUtils.getPaddingBottom(element);
    return element.offsetHeight - border - padding;
}
// Adapted from WinJS
// Gets the height of the element, including its margins.
export function getTotalHeight(element) {
    const margin = SizeUtils.getMarginTop(element) + SizeUtils.getMarginBottom(element);
    return element.offsetHeight + margin;
}
// ----------------------------------------------------------------------------------------
export function isAncestor(testChild, testAncestor) {
    return Boolean(testAncestor?.contains(testChild));
}
export function findParentWithClass(node, clazz, stopAtClazzOrNode) {
    while (node && node.nodeType === node.ELEMENT_NODE) {
        if (node.classList.contains(clazz)) {
            return node;
        }
        if (stopAtClazzOrNode) {
            if (typeof stopAtClazzOrNode === 'string') {
                if (node.classList.contains(stopAtClazzOrNode)) {
                    return null;
                }
            }
            else {
                if (node === stopAtClazzOrNode) {
                    return null;
                }
            }
        }
        node = node.parentNode;
    }
    return null;
}
export function hasParentWithClass(node, clazz, stopAtClazzOrNode) {
    return !!findParentWithClass(node, clazz, stopAtClazzOrNode);
}
export function isShadowRoot(node) {
    return (node && !!node.host && !!node.mode);
}
export function isInShadowDOM(domNode) {
    return !!getShadowRoot(domNode);
}
export function getShadowRoot(domNode) {
    while (domNode.parentNode) {
        if (domNode === domNode.ownerDocument?.body) {
            // reached the body
            return null;
        }
        domNode = domNode.parentNode;
    }
    return isShadowRoot(domNode) ? domNode : null;
}
/**
 * Returns the active element across all child windows
 * based on document focus. Falls back to the main
 * window if no window has focus.
 */
export function getActiveElement() {
    let result = getActiveDocument().activeElement;
    while (result?.shadowRoot) {
        result = result.shadowRoot.activeElement;
    }
    return result;
}
/**
 * Returns true if the focused window active element matches
 * the provided element. Falls back to the main window if no
 * window has focus.
 */
export function isActiveElement(element) {
    return getActiveElement() === element;
}
/**
 * Returns true if the focused window active element is contained in
 * `ancestor`. Falls back to the main window if no window has focus.
 */
export function isAncestorOfActiveElement(ancestor) {
    return isAncestor(getActiveElement(), ancestor);
}
/**
 * Returns the active document across main and child windows.
 * Prefers the window with focus, otherwise falls back to
 * the main windows document.
 */
export function getActiveDocument() {
    if (getWindowsCount() <= 1) {
        return mainWindow.document;
    }
    const documents = Array.from(getWindows()).map(({ window }) => window.document);
    return documents.find(doc => doc.hasFocus()) ?? mainWindow.document;
}
/**
 * Returns the active window across main and child windows.
 * Prefers the window with focus, otherwise falls back to
 * the main window.
 */
export function getActiveWindow() {
    const document = getActiveDocument();
    return (document.defaultView?.window ?? mainWindow);
}
const globalStylesheets = new Map();
/**
 * A version of createStyleSheet which has a unified API to initialize/set the style content.
 */
export function createStyleSheet2() {
    return new WrappedStyleElement();
}
class WrappedStyleElement {
    constructor() {
        this._currentCssStyle = '';
        this._styleSheet = undefined;
    }
    setStyle(cssStyle) {
        if (cssStyle === this._currentCssStyle) {
            return;
        }
        this._currentCssStyle = cssStyle;
        if (!this._styleSheet) {
            this._styleSheet = createStyleSheet(mainWindow.document.head, (s) => s.innerText = cssStyle);
        }
        else {
            this._styleSheet.innerText = cssStyle;
        }
    }
    dispose() {
        if (this._styleSheet) {
            this._styleSheet.remove();
            this._styleSheet = undefined;
        }
    }
}
export function createStyleSheet(container = mainWindow.document.head, beforeAppend, disposableStore) {
    const style = document.createElement('style');
    style.type = 'text/css';
    style.media = 'screen';
    beforeAppend?.(style);
    container.appendChild(style);
    if (disposableStore) {
        disposableStore.add(toDisposable(() => style.remove()));
    }
    // With <head> as container, the stylesheet becomes global and is tracked
    // to support auxiliary windows to clone the stylesheet.
    if (container === mainWindow.document.head) {
        const globalStylesheetClones = new Set();
        globalStylesheets.set(style, globalStylesheetClones);
        for (const { window: targetWindow, disposables } of getWindows()) {
            if (targetWindow === mainWindow) {
                continue; // main window is already tracked
            }
            const cloneDisposable = disposables.add(cloneGlobalStyleSheet(style, globalStylesheetClones, targetWindow));
            disposableStore?.add(cloneDisposable);
        }
    }
    return style;
}
function cloneGlobalStyleSheet(globalStylesheet, globalStylesheetClones, targetWindow) {
    const disposables = new DisposableStore();
    const clone = globalStylesheet.cloneNode(true);
    targetWindow.document.head.appendChild(clone);
    disposables.add(toDisposable(() => clone.remove()));
    for (const rule of getDynamicStyleSheetRules(globalStylesheet)) {
        clone.sheet?.insertRule(rule.cssText, clone.sheet?.cssRules.length);
    }
    disposables.add(sharedMutationObserver.observe(globalStylesheet, disposables, { childList: true })(() => {
        clone.textContent = globalStylesheet.textContent;
    }));
    globalStylesheetClones.add(clone);
    disposables.add(toDisposable(() => globalStylesheetClones.delete(clone)));
    return disposables;
}
export const sharedMutationObserver = new class {
    constructor() {
        this.mutationObservers = new Map();
    }
    observe(target, disposables, options) {
        let mutationObserversPerTarget = this.mutationObservers.get(target);
        if (!mutationObserversPerTarget) {
            mutationObserversPerTarget = new Map();
            this.mutationObservers.set(target, mutationObserversPerTarget);
        }
        const optionsHash = hash(options);
        let mutationObserverPerOptions = mutationObserversPerTarget.get(optionsHash);
        if (!mutationObserverPerOptions) {
            const onDidMutate = new event.Emitter();
            const observer = new MutationObserver(mutations => onDidMutate.fire(mutations));
            observer.observe(target, options);
            const resolvedMutationObserverPerOptions = mutationObserverPerOptions = {
                users: 1,
                observer,
                onDidMutate: onDidMutate.event
            };
            disposables.add(toDisposable(() => {
                resolvedMutationObserverPerOptions.users -= 1;
                if (resolvedMutationObserverPerOptions.users === 0) {
                    onDidMutate.dispose();
                    observer.disconnect();
                    mutationObserversPerTarget?.delete(optionsHash);
                    if (mutationObserversPerTarget?.size === 0) {
                        this.mutationObservers.delete(target);
                    }
                }
            }));
            mutationObserversPerTarget.set(optionsHash, mutationObserverPerOptions);
        }
        else {
            mutationObserverPerOptions.users += 1;
        }
        return mutationObserverPerOptions.onDidMutate;
    }
};
let _sharedStyleSheet = null;
function getSharedStyleSheet() {
    if (!_sharedStyleSheet) {
        _sharedStyleSheet = createStyleSheet();
    }
    return _sharedStyleSheet;
}
function getDynamicStyleSheetRules(style) {
    if (style?.sheet?.rules) {
        // Chrome, IE
        return style.sheet.rules;
    }
    if (style?.sheet?.cssRules) {
        // FF
        return style.sheet.cssRules;
    }
    return [];
}
export function createCSSRule(selector, cssText, style = getSharedStyleSheet()) {
    if (!style || !cssText) {
        return;
    }
    style.sheet?.insertRule(`${selector} {${cssText}}`, 0);
    // Apply rule also to all cloned global stylesheets
    for (const clonedGlobalStylesheet of globalStylesheets.get(style) ?? []) {
        createCSSRule(selector, cssText, clonedGlobalStylesheet);
    }
}
export function removeCSSRulesContainingSelector(ruleName, style = getSharedStyleSheet()) {
    if (!style) {
        return;
    }
    const rules = getDynamicStyleSheetRules(style);
    const toDelete = [];
    for (let i = 0; i < rules.length; i++) {
        const rule = rules[i];
        if (isCSSStyleRule(rule) && rule.selectorText.indexOf(ruleName) !== -1) {
            toDelete.push(i);
        }
    }
    for (let i = toDelete.length - 1; i >= 0; i--) {
        style.sheet?.deleteRule(toDelete[i]);
    }
    // Remove rules also from all cloned global stylesheets
    for (const clonedGlobalStylesheet of globalStylesheets.get(style) ?? []) {
        removeCSSRulesContainingSelector(ruleName, clonedGlobalStylesheet);
    }
}
function isCSSStyleRule(rule) {
    return typeof rule.selectorText === 'string';
}
export function isHTMLElement(e) {
    // eslint-disable-next-line no-restricted-syntax
    return e instanceof HTMLElement || e instanceof getWindow(e).HTMLElement;
}
export function isHTMLAnchorElement(e) {
    // eslint-disable-next-line no-restricted-syntax
    return e instanceof HTMLAnchorElement || e instanceof getWindow(e).HTMLAnchorElement;
}
export function isSVGElement(e) {
    // eslint-disable-next-line no-restricted-syntax
    return e instanceof SVGElement || e instanceof getWindow(e).SVGElement;
}
export function isMouseEvent(e) {
    // eslint-disable-next-line no-restricted-syntax
    return e instanceof MouseEvent || e instanceof getWindow(e).MouseEvent;
}
export function isKeyboardEvent(e) {
    // eslint-disable-next-line no-restricted-syntax
    return e instanceof KeyboardEvent || e instanceof getWindow(e).KeyboardEvent;
}
export const EventType = {
    // Mouse
    CLICK: 'click',
    AUXCLICK: 'auxclick',
    DBLCLICK: 'dblclick',
    MOUSE_UP: 'mouseup',
    MOUSE_DOWN: 'mousedown',
    MOUSE_OVER: 'mouseover',
    MOUSE_MOVE: 'mousemove',
    MOUSE_OUT: 'mouseout',
    MOUSE_ENTER: 'mouseenter',
    MOUSE_LEAVE: 'mouseleave',
    MOUSE_WHEEL: 'wheel',
    POINTER_UP: 'pointerup',
    POINTER_DOWN: 'pointerdown',
    POINTER_MOVE: 'pointermove',
    POINTER_LEAVE: 'pointerleave',
    CONTEXT_MENU: 'contextmenu',
    WHEEL: 'wheel',
    // Keyboard
    KEY_DOWN: 'keydown',
    KEY_PRESS: 'keypress',
    KEY_UP: 'keyup',
    // HTML Document
    LOAD: 'load',
    BEFORE_UNLOAD: 'beforeunload',
    UNLOAD: 'unload',
    PAGE_SHOW: 'pageshow',
    PAGE_HIDE: 'pagehide',
    PASTE: 'paste',
    ABORT: 'abort',
    ERROR: 'error',
    RESIZE: 'resize',
    SCROLL: 'scroll',
    FULLSCREEN_CHANGE: 'fullscreenchange',
    WK_FULLSCREEN_CHANGE: 'webkitfullscreenchange',
    // Form
    SELECT: 'select',
    CHANGE: 'change',
    SUBMIT: 'submit',
    RESET: 'reset',
    FOCUS: 'focus',
    FOCUS_IN: 'focusin',
    FOCUS_OUT: 'focusout',
    BLUR: 'blur',
    INPUT: 'input',
    // Local Storage
    STORAGE: 'storage',
    // Drag
    DRAG_START: 'dragstart',
    DRAG: 'drag',
    DRAG_ENTER: 'dragenter',
    DRAG_LEAVE: 'dragleave',
    DRAG_OVER: 'dragover',
    DROP: 'drop',
    DRAG_END: 'dragend',
    // Animation
    ANIMATION_START: browser.isWebKit ? 'webkitAnimationStart' : 'animationstart',
    ANIMATION_END: browser.isWebKit ? 'webkitAnimationEnd' : 'animationend',
    ANIMATION_ITERATION: browser.isWebKit ? 'webkitAnimationIteration' : 'animationiteration'
};
export function isEventLike(obj) {
    const candidate = obj;
    return !!(candidate && typeof candidate.preventDefault === 'function' && typeof candidate.stopPropagation === 'function');
}
export const EventHelper = {
    stop: (e, cancelBubble) => {
        e.preventDefault();
        if (cancelBubble) {
            e.stopPropagation();
        }
        return e;
    }
};
export function saveParentsScrollTop(node) {
    const r = [];
    for (let i = 0; node && node.nodeType === node.ELEMENT_NODE; i++) {
        r[i] = node.scrollTop;
        node = node.parentNode;
    }
    return r;
}
export function restoreParentsScrollTop(node, state) {
    for (let i = 0; node && node.nodeType === node.ELEMENT_NODE; i++) {
        if (node.scrollTop !== state[i]) {
            node.scrollTop = state[i];
        }
        node = node.parentNode;
    }
}
class FocusTracker extends Disposable {
    static hasFocusWithin(element) {
        if (isHTMLElement(element)) {
            const shadowRoot = getShadowRoot(element);
            const activeElement = (shadowRoot ? shadowRoot.activeElement : element.ownerDocument.activeElement);
            return isAncestor(activeElement, element);
        }
        else {
            const window = element;
            return isAncestor(window.document.activeElement, window.document);
        }
    }
    constructor(element) {
        super();
        this._onDidFocus = this._register(new event.Emitter());
        this.onDidFocus = this._onDidFocus.event;
        this._onDidBlur = this._register(new event.Emitter());
        this.onDidBlur = this._onDidBlur.event;
        let hasFocus = FocusTracker.hasFocusWithin(element);
        let loosingFocus = false;
        const onFocus = () => {
            loosingFocus = false;
            if (!hasFocus) {
                hasFocus = true;
                this._onDidFocus.fire();
            }
        };
        const onBlur = () => {
            if (hasFocus) {
                loosingFocus = true;
                (isHTMLElement(element) ? getWindow(element) : element).setTimeout(() => {
                    if (loosingFocus) {
                        loosingFocus = false;
                        hasFocus = false;
                        this._onDidBlur.fire();
                    }
                }, 0);
            }
        };
        this._refreshStateHandler = () => {
            const currentNodeHasFocus = FocusTracker.hasFocusWithin(element);
            if (currentNodeHasFocus !== hasFocus) {
                if (hasFocus) {
                    onBlur();
                }
                else {
                    onFocus();
                }
            }
        };
        this._register(addDisposableListener(element, EventType.FOCUS, onFocus, true));
        this._register(addDisposableListener(element, EventType.BLUR, onBlur, true));
        if (isHTMLElement(element)) {
            this._register(addDisposableListener(element, EventType.FOCUS_IN, () => this._refreshStateHandler()));
            this._register(addDisposableListener(element, EventType.FOCUS_OUT, () => this._refreshStateHandler()));
        }
    }
}
/**
 * Creates a new `IFocusTracker` instance that tracks focus changes on the given `element` and its descendants.
 *
 * @param element The `HTMLElement` or `Window` to track focus changes on.
 * @returns An `IFocusTracker` instance.
 */
export function trackFocus(element) {
    return new FocusTracker(element);
}
export function after(sibling, child) {
    sibling.after(child);
    return child;
}
export function append(parent, ...children) {
    parent.append(...children);
    if (children.length === 1 && typeof children[0] !== 'string') {
        return children[0];
    }
}
export function prepend(parent, child) {
    parent.insertBefore(child, parent.firstChild);
    return child;
}
/**
 * Removes all children from `parent` and appends `children`
 */
export function reset(parent, ...children) {
    parent.innerText = '';
    append(parent, ...children);
}
const SELECTOR_REGEX = /([\w\-]+)?(#([\w\-]+))?((\.([\w\-]+))*)/;
export var Namespace;
(function (Namespace) {
    Namespace["HTML"] = "http://www.w3.org/1999/xhtml";
    Namespace["SVG"] = "http://www.w3.org/2000/svg";
})(Namespace || (Namespace = {}));
function _$(namespace, description, attrs, ...children) {
    const match = SELECTOR_REGEX.exec(description);
    if (!match) {
        throw new Error('Bad use of emmet');
    }
    const tagName = match[1] || 'div';
    let result;
    if (namespace !== Namespace.HTML) {
        result = document.createElementNS(namespace, tagName);
    }
    else {
        result = document.createElement(tagName);
    }
    if (match[3]) {
        result.id = match[3];
    }
    if (match[4]) {
        result.className = match[4].replace(/\./g, ' ').trim();
    }
    if (attrs) {
        Object.entries(attrs).forEach(([name, value]) => {
            if (typeof value === 'undefined') {
                return;
            }
            if (/^on\w+$/.test(name)) {
                result[name] = value;
            }
            else if (name === 'selected') {
                if (value) {
                    result.setAttribute(name, 'true');
                }
            }
            else {
                result.setAttribute(name, value);
            }
        });
    }
    result.append(...children);
    return result;
}
export function $(description, attrs, ...children) {
    return _$(Namespace.HTML, description, attrs, ...children);
}
$.SVG = function (description, attrs, ...children) {
    return _$(Namespace.SVG, description, attrs, ...children);
};
export function setVisibility(visible, ...elements) {
    if (visible) {
        show(...elements);
    }
    else {
        hide(...elements);
    }
}
export function show(...elements) {
    for (const element of elements) {
        element.style.display = '';
        element.removeAttribute('aria-hidden');
    }
}
export function hide(...elements) {
    for (const element of elements) {
        element.style.display = 'none';
        element.setAttribute('aria-hidden', 'true');
    }
}
/**
 * Find a value usable for a dom node size such that the likelihood that it would be
 * displayed with constant screen pixels size is as high as possible.
 *
 * e.g. We would desire for the cursors to be 2px (CSS px) wide. Under a devicePixelRatio
 * of 1.25, the cursor will be 2.5 screen pixels wide. Depending on how the dom node aligns/"snaps"
 * with the screen pixels, it will sometimes be rendered with 2 screen pixels, and sometimes with 3 screen pixels.
 */
export function computeScreenAwareSize(window, cssPx) {
    const screenPx = window.devicePixelRatio * cssPx;
    return Math.max(1, Math.floor(screenPx)) / window.devicePixelRatio;
}
/**
 * Open safely a new window. This is the best way to do so, but you cannot tell
 * if the window was opened or if it was blocked by the browser's popup blocker.
 * If you want to tell if the browser blocked the new window, use {@link windowOpenWithSuccess}.
 *
 * See https://github.com/microsoft/monaco-editor/issues/601
 * To protect against malicious code in the linked site, particularly phishing attempts,
 * the window.opener should be set to null to prevent the linked site from having access
 * to change the location of the current page.
 * See https://mathiasbynens.github.io/rel-noopener/
 */
export function windowOpenNoOpener(url) {
    // By using 'noopener' in the `windowFeatures` argument, the newly created window will
    // not be able to use `window.opener` to reach back to the current page.
    // See https://stackoverflow.com/a/46958731
    // See https://developer.mozilla.org/en-US/docs/Web/API/Window/open#noopener
    // However, this also doesn't allow us to realize if the browser blocked
    // the creation of the window.
    mainWindow.open(url, '_blank', 'noopener');
}
export function animate(targetWindow, fn) {
    const step = () => {
        fn();
        stepDisposable = scheduleAtNextAnimationFrame(targetWindow, step);
    };
    let stepDisposable = scheduleAtNextAnimationFrame(targetWindow, step);
    return toDisposable(() => stepDisposable.dispose());
}
RemoteAuthorities.setPreferredWebSchema(/^https:/.test(mainWindow.location.href) ? 'https' : 'http');
/**
 * returns url('...')
 */
export function asCSSUrl(uri) {
    if (!uri) {
        return `url('')`;
    }
    return `url('${FileAccess.uriToBrowserUri(uri).toString(true).replace(/'/g, '%27')}')`;
}
export function asCSSPropertyValue(value) {
    return `'${value.replace(/'/g, '%27')}'`;
}
export function asCssValueWithDefault(cssPropertyValue, dflt) {
    if (cssPropertyValue !== undefined) {
        const variableMatch = cssPropertyValue.match(/^\s*var\((.+)\)$/);
        if (variableMatch) {
            const varArguments = variableMatch[1].split(',', 2);
            if (varArguments.length === 2) {
                dflt = asCssValueWithDefault(varArguments[1].trim(), dflt);
            }
            return `var(${varArguments[0]}, ${dflt})`;
        }
        return cssPropertyValue;
    }
    return dflt;
}
// -- sanitize and trusted html
/**
 * Hooks dompurify using `afterSanitizeAttributes` to check that all `href` and `src`
 * attributes are valid.
 */
export function hookDomPurifyHrefAndSrcSanitizer(allowedProtocols, allowDataImages = false) {
    // https://github.com/cure53/DOMPurify/blob/main/demos/hooks-scheme-allowlist.html
    // build an anchor to map URLs to
    const anchor = document.createElement('a');
    dompurify.addHook('afterSanitizeAttributes', (node) => {
        // check all href/src attributes for validity
        for (const attr of ['href', 'src']) {
            if (node.hasAttribute(attr)) {
                const attrValue = node.getAttribute(attr);
                if (attr === 'href' && attrValue.startsWith('#')) {
                    // Allow fragment links
                    continue;
                }
                anchor.href = attrValue;
                if (!allowedProtocols.includes(anchor.protocol.replace(/:$/, ''))) {
                    if (allowDataImages && attr === 'src' && anchor.href.startsWith('data:')) {
                        continue;
                    }
                    node.removeAttribute(attr);
                }
            }
        }
    });
    return toDisposable(() => {
        dompurify.removeHook('afterSanitizeAttributes');
    });
}
/**
 * List of safe, non-input html tags.
 */
export const basicMarkupHtmlTags = Object.freeze([
    'a',
    'abbr',
    'b',
    'bdo',
    'blockquote',
    'br',
    'caption',
    'cite',
    'code',
    'col',
    'colgroup',
    'dd',
    'del',
    'details',
    'dfn',
    'div',
    'dl',
    'dt',
    'em',
    'figcaption',
    'figure',
    'h1',
    'h2',
    'h3',
    'h4',
    'h5',
    'h6',
    'hr',
    'i',
    'img',
    'input',
    'ins',
    'kbd',
    'label',
    'li',
    'mark',
    'ol',
    'p',
    'pre',
    'q',
    'rp',
    'rt',
    'ruby',
    'samp',
    'small',
    'small',
    'source',
    'span',
    'strike',
    'strong',
    'sub',
    'summary',
    'sup',
    'table',
    'tbody',
    'td',
    'tfoot',
    'th',
    'thead',
    'time',
    'tr',
    'tt',
    'u',
    'ul',
    'var',
    'video',
    'wbr',
]);
const defaultDomPurifyConfig = Object.freeze({
    ALLOWED_TAGS: ['a', 'button', 'blockquote', 'code', 'div', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'hr', 'input', 'label', 'li', 'p', 'pre', 'select', 'small', 'span', 'strong', 'textarea', 'ul', 'ol'],
    ALLOWED_ATTR: ['href', 'data-href', 'data-command', 'target', 'title', 'name', 'src', 'alt', 'class', 'id', 'role', 'tabindex', 'style', 'data-code', 'width', 'height', 'align', 'x-dispatch', 'required', 'checked', 'placeholder', 'type', 'start'],
    RETURN_DOM: false,
    RETURN_DOM_FRAGMENT: false,
    RETURN_TRUSTED_TYPE: true
});
export class ModifierKeyEmitter extends event.Emitter {
    constructor() {
        super();
        this._subscriptions = new DisposableStore();
        this._keyStatus = {
            altKey: false,
            shiftKey: false,
            ctrlKey: false,
            metaKey: false
        };
        this._subscriptions.add(event.Event.runAndSubscribe(onDidRegisterWindow, ({ window, disposables }) => this.registerListeners(window, disposables), { window: mainWindow, disposables: this._subscriptions }));
    }
    registerListeners(window, disposables) {
        disposables.add(addDisposableListener(window, 'keydown', e => {
            if (e.defaultPrevented) {
                return;
            }
            const event = new StandardKeyboardEvent(e);
            // If Alt-key keydown event is repeated, ignore it #112347
            // Only known to be necessary for Alt-Key at the moment #115810
            if (event.keyCode === 6 /* KeyCode.Alt */ && e.repeat) {
                return;
            }
            if (e.altKey && !this._keyStatus.altKey) {
                this._keyStatus.lastKeyPressed = 'alt';
            }
            else if (e.ctrlKey && !this._keyStatus.ctrlKey) {
                this._keyStatus.lastKeyPressed = 'ctrl';
            }
            else if (e.metaKey && !this._keyStatus.metaKey) {
                this._keyStatus.lastKeyPressed = 'meta';
            }
            else if (e.shiftKey && !this._keyStatus.shiftKey) {
                this._keyStatus.lastKeyPressed = 'shift';
            }
            else if (event.keyCode !== 6 /* KeyCode.Alt */) {
                this._keyStatus.lastKeyPressed = undefined;
            }
            else {
                return;
            }
            this._keyStatus.altKey = e.altKey;
            this._keyStatus.ctrlKey = e.ctrlKey;
            this._keyStatus.metaKey = e.metaKey;
            this._keyStatus.shiftKey = e.shiftKey;
            if (this._keyStatus.lastKeyPressed) {
                this._keyStatus.event = e;
                this.fire(this._keyStatus);
            }
        }, true));
        disposables.add(addDisposableListener(window, 'keyup', e => {
            if (e.defaultPrevented) {
                return;
            }
            if (!e.altKey && this._keyStatus.altKey) {
                this._keyStatus.lastKeyReleased = 'alt';
            }
            else if (!e.ctrlKey && this._keyStatus.ctrlKey) {
                this._keyStatus.lastKeyReleased = 'ctrl';
            }
            else if (!e.metaKey && this._keyStatus.metaKey) {
                this._keyStatus.lastKeyReleased = 'meta';
            }
            else if (!e.shiftKey && this._keyStatus.shiftKey) {
                this._keyStatus.lastKeyReleased = 'shift';
            }
            else {
                this._keyStatus.lastKeyReleased = undefined;
            }
            if (this._keyStatus.lastKeyPressed !== this._keyStatus.lastKeyReleased) {
                this._keyStatus.lastKeyPressed = undefined;
            }
            this._keyStatus.altKey = e.altKey;
            this._keyStatus.ctrlKey = e.ctrlKey;
            this._keyStatus.metaKey = e.metaKey;
            this._keyStatus.shiftKey = e.shiftKey;
            if (this._keyStatus.lastKeyReleased) {
                this._keyStatus.event = e;
                this.fire(this._keyStatus);
            }
        }, true));
        disposables.add(addDisposableListener(window.document.body, 'mousedown', () => {
            this._keyStatus.lastKeyPressed = undefined;
        }, true));
        disposables.add(addDisposableListener(window.document.body, 'mouseup', () => {
            this._keyStatus.lastKeyPressed = undefined;
        }, true));
        disposables.add(addDisposableListener(window.document.body, 'mousemove', e => {
            if (e.buttons) {
                this._keyStatus.lastKeyPressed = undefined;
            }
        }, true));
        disposables.add(addDisposableListener(window, 'blur', () => {
            this.resetKeyStatus();
        }));
    }
    get keyStatus() {
        return this._keyStatus;
    }
    /**
     * Allows to explicitly reset the key status based on more knowledge (#109062)
     */
    resetKeyStatus() {
        this.doResetKeyStatus();
        this.fire(this._keyStatus);
    }
    doResetKeyStatus() {
        this._keyStatus = {
            altKey: false,
            shiftKey: false,
            ctrlKey: false,
            metaKey: false
        };
    }
    static getInstance() {
        if (!ModifierKeyEmitter.instance) {
            ModifierKeyEmitter.instance = new ModifierKeyEmitter();
        }
        return ModifierKeyEmitter.instance;
    }
    dispose() {
        super.dispose();
        this._subscriptions.dispose();
    }
}
export class DragAndDropObserver extends Disposable {
    constructor(element, callbacks) {
        super();
        this.element = element;
        this.callbacks = callbacks;
        // A helper to fix issues with repeated DRAG_ENTER / DRAG_LEAVE
        // calls see https://github.com/microsoft/vscode/issues/14470
        // when the element has child elements where the events are fired
        // repeadedly.
        this.counter = 0;
        // Allows to measure the duration of the drag operation.
        this.dragStartTime = 0;
        this.registerListeners();
    }
    registerListeners() {
        if (this.callbacks.onDragStart) {
            this._register(addDisposableListener(this.element, EventType.DRAG_START, (e) => {
                this.callbacks.onDragStart?.(e);
            }));
        }
        if (this.callbacks.onDrag) {
            this._register(addDisposableListener(this.element, EventType.DRAG, (e) => {
                this.callbacks.onDrag?.(e);
            }));
        }
        this._register(addDisposableListener(this.element, EventType.DRAG_ENTER, (e) => {
            this.counter++;
            this.dragStartTime = e.timeStamp;
            this.callbacks.onDragEnter?.(e);
        }));
        this._register(addDisposableListener(this.element, EventType.DRAG_OVER, (e) => {
            e.preventDefault(); // needed so that the drop event fires (https://stackoverflow.com/questions/21339924/drop-event-not-firing-in-chrome)
            this.callbacks.onDragOver?.(e, e.timeStamp - this.dragStartTime);
        }));
        this._register(addDisposableListener(this.element, EventType.DRAG_LEAVE, (e) => {
            this.counter--;
            if (this.counter === 0) {
                this.dragStartTime = 0;
                this.callbacks.onDragLeave?.(e);
            }
        }));
        this._register(addDisposableListener(this.element, EventType.DRAG_END, (e) => {
            this.counter = 0;
            this.dragStartTime = 0;
            this.callbacks.onDragEnd?.(e);
        }));
        this._register(addDisposableListener(this.element, EventType.DROP, (e) => {
            this.counter = 0;
            this.dragStartTime = 0;
            this.callbacks.onDrop?.(e);
        }));
    }
}
const H_REGEX = /(?<tag>[\w\-]+)?(?:#(?<id>[\w\-]+))?(?<class>(?:\.(?:[\w\-]+))*)(?:@(?<name>(?:[\w\_])+))?/;
export function h(tag, ...args) {
    let attributes;
    let children;
    if (Array.isArray(args[0])) {
        attributes = {};
        children = args[0];
    }
    else {
        attributes = args[0] || {};
        children = args[1];
    }
    const match = H_REGEX.exec(tag);
    if (!match || !match.groups) {
        throw new Error('Bad use of h');
    }
    const tagName = match.groups['tag'] || 'div';
    const el = document.createElement(tagName);
    if (match.groups['id']) {
        el.id = match.groups['id'];
    }
    const classNames = [];
    if (match.groups['class']) {
        for (const className of match.groups['class'].split('.')) {
            if (className !== '') {
                classNames.push(className);
            }
        }
    }
    if (attributes.className !== undefined) {
        for (const className of attributes.className.split('.')) {
            if (className !== '') {
                classNames.push(className);
            }
        }
    }
    if (classNames.length > 0) {
        el.className = classNames.join(' ');
    }
    const result = {};
    if (match.groups['name']) {
        result[match.groups['name']] = el;
    }
    if (children) {
        for (const c of children) {
            if (isHTMLElement(c)) {
                el.appendChild(c);
            }
            else if (typeof c === 'string') {
                el.append(c);
            }
            else if ('root' in c) {
                Object.assign(result, c);
                el.appendChild(c.root);
            }
        }
    }
    for (const [key, value] of Object.entries(attributes)) {
        if (key === 'className') {
            continue;
        }
        else if (key === 'style') {
            for (const [cssKey, cssValue] of Object.entries(value)) {
                el.style.setProperty(camelCaseToHyphenCase(cssKey), typeof cssValue === 'number' ? cssValue + 'px' : '' + cssValue);
            }
        }
        else if (key === 'tabIndex') {
            el.tabIndex = value;
        }
        else {
            el.setAttribute(camelCaseToHyphenCase(key), value.toString());
        }
    }
    result['root'] = el;
    return result;
}
export function svgElem(tag, ...args) {
    let attributes;
    let children;
    if (Array.isArray(args[0])) {
        attributes = {};
        children = args[0];
    }
    else {
        attributes = args[0] || {};
        children = args[1];
    }
    const match = H_REGEX.exec(tag);
    if (!match || !match.groups) {
        throw new Error('Bad use of h');
    }
    const tagName = match.groups['tag'] || 'div';
    const el = document.createElementNS('http://www.w3.org/2000/svg', tagName);
    if (match.groups['id']) {
        el.id = match.groups['id'];
    }
    const classNames = [];
    if (match.groups['class']) {
        for (const className of match.groups['class'].split('.')) {
            if (className !== '') {
                classNames.push(className);
            }
        }
    }
    if (attributes.className !== undefined) {
        for (const className of attributes.className.split('.')) {
            if (className !== '') {
                classNames.push(className);
            }
        }
    }
    if (classNames.length > 0) {
        el.className = classNames.join(' ');
    }
    const result = {};
    if (match.groups['name']) {
        result[match.groups['name']] = el;
    }
    if (children) {
        for (const c of children) {
            if (isHTMLElement(c)) {
                el.appendChild(c);
            }
            else if (typeof c === 'string') {
                el.append(c);
            }
            else if ('root' in c) {
                Object.assign(result, c);
                el.appendChild(c.root);
            }
        }
    }
    for (const [key, value] of Object.entries(attributes)) {
        if (key === 'className') {
            continue;
        }
        else if (key === 'style') {
            for (const [cssKey, cssValue] of Object.entries(value)) {
                el.style.setProperty(camelCaseToHyphenCase(cssKey), typeof cssValue === 'number' ? cssValue + 'px' : '' + cssValue);
            }
        }
        else if (key === 'tabIndex') {
            el.tabIndex = value;
        }
        else {
            el.setAttribute(camelCaseToHyphenCase(key), value.toString());
        }
    }
    result['root'] = el;
    return result;
}
function camelCaseToHyphenCase(str) {
    return str.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
}