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Code Issues Releases Wiki Activity

Updated to noVNC 1.3.0, #2603

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This commit is contained in:
Ylian Saint-Hilaire 2021-11-29 12:08:15 -08:00
parent a2ce9b8573
commit 112ebde4f2
75 changed files with 3712 additions and 60022 deletions
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93
public/novnc/core/util/events.js
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@ -21,7 +21,8 @@ export function stopEvent(e) {
// Emulate Element.setCapture() when not supported
let _captureRecursion = false;
let _captureElem = null;
let _elementForUnflushedEvents = null;
document.captureElement = null;
function _captureProxy(e) {
// Recursion protection as we'll see our own event
if (_captureRecursion) return;
@ -30,7 +31,11 @@ function _captureProxy(e) {
const newEv = new e.constructor(e.type, e);
_captureRecursion = true;
_captureElem.dispatchEvent(newEv);
if (document.captureElement) {
document.captureElement.dispatchEvent(newEv);
} else {
_elementForUnflushedEvents.dispatchEvent(newEv);
}
_captureRecursion = false;
// Avoid double events
@ -48,58 +53,52 @@ function _captureProxy(e) {
}
// Follow cursor style of target element
function _captureElemChanged() {
const captureElem = document.getElementById("noVNC_mouse_capture_elem");
captureElem.style.cursor = window.getComputedStyle(_captureElem).cursor;
function _capturedElemChanged() {
const proxyElem = document.getElementById("noVNC_mouse_capture_elem");
proxyElem.style.cursor = window.getComputedStyle(document.captureElement).cursor;
}
const _captureObserver = new MutationObserver(_captureElemChanged);
const _captureObserver = new MutationObserver(_capturedElemChanged);
let _captureIndex = 0;
export function setCapture(elem) {
if (elem.setCapture) {
elem.setCapture();
// IE releases capture on 'click' events which might not trigger
elem.addEventListener('mouseup', releaseCapture);
export function setCapture(target) {
if (target.setCapture) {
target.setCapture();
document.captureElement = target;
} else {
// Release any existing capture in case this method is
// called multiple times without coordination
releaseCapture();
let captureElem = document.getElementById("noVNC_mouse_capture_elem");
let proxyElem = document.getElementById("noVNC_mouse_capture_elem");
if (captureElem === null) {
captureElem = document.createElement("div");
captureElem.id = "noVNC_mouse_capture_elem";
captureElem.style.position = "fixed";
captureElem.style.top = "0px";
captureElem.style.left = "0px";
captureElem.style.width = "100%";
captureElem.style.height = "100%";
captureElem.style.zIndex = 10000;
captureElem.style.display = "none";
document.body.appendChild(captureElem);
if (proxyElem === null) {
proxyElem = document.createElement("div");
proxyElem.id = "noVNC_mouse_capture_elem";
proxyElem.style.position = "fixed";
proxyElem.style.top = "0px";
proxyElem.style.left = "0px";
proxyElem.style.width = "100%";
proxyElem.style.height = "100%";
proxyElem.style.zIndex = 10000;
proxyElem.style.display = "none";
document.body.appendChild(proxyElem);
// This is to make sure callers don't get confused by having
// our blocking element as the target
captureElem.addEventListener('contextmenu', _captureProxy);
proxyElem.addEventListener('contextmenu', _captureProxy);
captureElem.addEventListener('mousemove', _captureProxy);
captureElem.addEventListener('mouseup', _captureProxy);
proxyElem.addEventListener('mousemove', _captureProxy);
proxyElem.addEventListener('mouseup', _captureProxy);
}
_captureElem = elem;
_captureIndex++;
document.captureElement = target;
// Track cursor and get initial cursor
_captureObserver.observe(elem, {attributes: true});
_captureElemChanged();
_captureObserver.observe(target, {attributes: true});
_capturedElemChanged();
captureElem.style.display = "";
proxyElem.style.display = "";
// We listen to events on window in order to keep tracking if it
// happens to leave the viewport
@ -112,26 +111,26 @@ export function releaseCapture() {
if (document.releaseCapture) {
document.releaseCapture();
document.captureElement = null;
} else {
if (!_captureElem) {
if (!document.captureElement) {
return;
}
// There might be events already queued, so we need to wait for
// them to flush. E.g. contextmenu in Microsoft Edge
window.setTimeout((expected) => {
// Only clear it if it's the expected grab (i.e. no one
// else has initiated a new grab)
if (_captureIndex === expected) {
_captureElem = null;
}
}, 0, _captureIndex);
// There might be events already queued. The event proxy needs
// access to the captured element for these queued events.
// E.g. contextmenu (right-click) in Microsoft Edge
//
// Before removing the capturedElem pointer we save it to a
// temporary variable that the unflushed events can use.
_elementForUnflushedEvents = document.captureElement;
document.captureElement = null;
_captureObserver.disconnect();
const captureElem = document.getElementById("noVNC_mouse_capture_elem");
captureElem.style.display = "none";
const proxyElem = document.getElementById("noVNC_mouse_capture_elem");
proxyElem.style.display = "none";
window.removeEventListener('mousemove', _captureProxy);
window.removeEventListener('mouseup', _captureProxy);