monaco-editor-core
Version:
A browser based code editor
76 lines (75 loc) • 3.57 kB
JavaScript
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import { GlobalPointerMoveMonitor } from '../../globalPointerMoveMonitor.js';
import { Widget } from '../widget.js';
import { TimeoutTimer } from '../../../common/async.js';
import { ThemeIcon } from '../../../common/themables.js';
import * as dom from '../../dom.js';
/**
* The arrow image size.
*/
export const ARROW_IMG_SIZE = 11;
export class ScrollbarArrow extends Widget {
constructor(opts) {
super();
this._onActivate = opts.onActivate;
this.bgDomNode = document.createElement('div');
this.bgDomNode.className = 'arrow-background';
this.bgDomNode.style.position = 'absolute';
this.bgDomNode.style.width = opts.bgWidth + 'px';
this.bgDomNode.style.height = opts.bgHeight + 'px';
if (typeof opts.top !== 'undefined') {
this.bgDomNode.style.top = '0px';
}
if (typeof opts.left !== 'undefined') {
this.bgDomNode.style.left = '0px';
}
if (typeof opts.bottom !== 'undefined') {
this.bgDomNode.style.bottom = '0px';
}
if (typeof opts.right !== 'undefined') {
this.bgDomNode.style.right = '0px';
}
this.domNode = document.createElement('div');
this.domNode.className = opts.className;
this.domNode.classList.add(...ThemeIcon.asClassNameArray(opts.icon));
this.domNode.style.position = 'absolute';
this.domNode.style.width = ARROW_IMG_SIZE + 'px';
this.domNode.style.height = ARROW_IMG_SIZE + 'px';
if (typeof opts.top !== 'undefined') {
this.domNode.style.top = opts.top + 'px';
}
if (typeof opts.left !== 'undefined') {
this.domNode.style.left = opts.left + 'px';
}
if (typeof opts.bottom !== 'undefined') {
this.domNode.style.bottom = opts.bottom + 'px';
}
if (typeof opts.right !== 'undefined') {
this.domNode.style.right = opts.right + 'px';
}
this._pointerMoveMonitor = this._register(new GlobalPointerMoveMonitor());
this._register(dom.addStandardDisposableListener(this.bgDomNode, dom.EventType.POINTER_DOWN, (e) => this._arrowPointerDown(e)));
this._register(dom.addStandardDisposableListener(this.domNode, dom.EventType.POINTER_DOWN, (e) => this._arrowPointerDown(e)));
this._pointerdownRepeatTimer = this._register(new dom.WindowIntervalTimer());
this._pointerdownScheduleRepeatTimer = this._register(new TimeoutTimer());
}
_arrowPointerDown(e) {
if (!e.target || !(e.target instanceof Element)) {
return;
}
const scheduleRepeater = () => {
this._pointerdownRepeatTimer.cancelAndSet(() => this._onActivate(), 1000 / 24, dom.getWindow(e));
};
this._onActivate();
this._pointerdownRepeatTimer.cancel();
this._pointerdownScheduleRepeatTimer.cancelAndSet(scheduleRepeater, 200);
this._pointerMoveMonitor.startMonitoring(e.target, e.pointerId, e.buttons, (pointerMoveData) => { }, () => {
this._pointerdownRepeatTimer.cancel();
this._pointerdownScheduleRepeatTimer.cancel();
});
e.preventDefault();
}
}