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Emulating event bubble for DOMs inside web components #26

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Emulating event bubble for DOMs inside web components #26

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c672c56
feat(build): add vite and index.html
NiuZhuang Nov 16, 2022
e2688fe
feat(web-components): emulating event bubble for web components
NiuZhuang Nov 16, 2022
f6e7379
feat(web-components): emulate event bubble in web components
NiuZhuang Nov 16, 2022
704c455
feat(web-components): fix event bubbles in web components
NiuZhuang Nov 17, 2022
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2 changes: 2 additions & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -23,3 +23,5 @@ build/Release
# Deployed apps should consider commenting this line out:
# see https://npmjs.org/doc/faq.html#Should-I-check-my-node_modules-folder-into-git
node_modules

package-lock.json
58 changes: 58 additions & 0 deletions index.html
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@@ -0,0 +1,58 @@
<!DOCTYPE html>
<html>

<head lang="en">
<meta charset="UTF-8">
<title>Touch Emulator Manual</title>
</head>

<body>

<div>Touch Emulator Manual</div>

<br>
<br>

<div>Manual:</div>
<ul>
<li>
<a href="tests/manual/events.html">events</a>
</li>
<li>
<a href="tests/manual/googlemaps.html">googlemaps</a>
</li>
<li>
<a href="tests/manual/hammer.html">hammer</a>
</li>
<li>
<a href="tests/manual/img.html">img</a>
</li>
<li>
<a href="tests/manual/leaflet.html">leaflet</a>
</li>
<li>
<a href="tests/manual/modernizr.html">modernizr</a>
</li>
</ul>

<br>
<br>
<div>Touch Events:</div>
<ul>
<li>
<a href="tests/web-platform-tests/touch-events/create-touch-touchlist.html">create-touch-touchlist</a>
</li>
<li>
<a href="tests/web-platform-tests/touch-events/multi-touch-interactions-manual.html">multi-touch-interactions-manual</a>

</li>
<li>
<a href="tests/web-platform-tests/touch-events/multi-touch-interfaces-manual.html">multi-touch-interfaces-manual</a>
</li>
<li>
<a href="tests/web-platform-tests/touch-events/single-touch-manual.html">single-touch-manual</a>
</li>
</ul>
</body>

</html>
6 changes: 5 additions & 1 deletion package.json
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Expand Up @@ -7,6 +7,7 @@
"test": "tests"
},
"scripts": {
"dev": "vite dev",
"test": "echo \"Error: no test specified\" && exit 1"
},
"repository": {
Expand All @@ -25,5 +26,8 @@
"bugs": {
"url": "https://github.com/hammerjs/touchemulator/issues"
},
"homepage": "https://github.com/hammerjs/touchemulator"
"homepage": "https://github.com/hammerjs/touchemulator",
"devDependencies": {
"vite": "^3.2.4"
}
}
35 changes: 27 additions & 8 deletions touch-emulator.js
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Expand Up @@ -4,6 +4,7 @@
var isMultiTouch = false;
var multiTouchStartPos;
var eventTarget;
var eventTargetList = [];
var touchElements = {};

// polyfills
Expand Down Expand Up @@ -137,21 +138,39 @@
// The EventTarget on which the touch point started when it was first placed on the surface,
// even if the touch point has since moved outside the interactive area of that element.
// also, when the target doesnt exist anymore, we update it

if (ev.type == 'mousedown' || !eventTarget || (eventTarget && !eventTarget.dispatchEvent)) {
if(ev.composedPath() && ev.composedPath().length > 0){
eventTarget = ev.composedPath()[0]
}else {
var composedPathList = ev.composedPath();
// Emulating event bubble from composedPath()[0] to ev.target for DOMs inside Web Components .
if(composedPathList.length > 0){
for(var i = 0; i < composedPathList.length; i = i+1){
if(composedPathList[i]!==ev.target && (eventTargetList.length === 0 || eventTargetList.indexOf(composedPathList[i]) === -1 )){
eventTargetList.push(composedPathList[i])
} else {
break;
}
}

for(var j = 0; j < eventTargetList.length; j = j+1){
processTriggerForOneElement(ev, touchType, eventTargetList[j])
}
} else {
eventTarget = ev.target;
processTriggerForOneElement(ev, touchType, eventTarget)
}
}

}
}

function processTriggerForOneElement(ev, touchType, eventTarget){
// shiftKey has been lost, so trigger a touchend
if (isMultiTouch && !ev.shiftKey) {
triggerTouch('touchend', ev);
triggerTouch('touchend', ev, eventTarget);
isMultiTouch = false;
}

triggerTouch(touchType, ev);
triggerTouch(touchType, ev, eventTarget);

// we're entering the multi-touch mode!
if (!isMultiTouch && ev.shiftKey) {
Expand All @@ -164,24 +183,24 @@
screenX: ev.screenX,
screenY: ev.screenY
};
triggerTouch('touchstart', ev);
triggerTouch('touchstart', ev, eventTarget);
}

// reset
if (ev.type == 'mouseup') {
multiTouchStartPos = null;
isMultiTouch = false;
eventTarget = null;
eventTargetList = [];
}
}
}

/**
* trigger a touch event
* @param eventName
* @param mouseEv
*/
function triggerTouch(eventName, mouseEv) {
function triggerTouch(eventName, mouseEv, eventTarget) {
var touchEvent = document.createEvent('Event');
touchEvent.initEvent(eventName, true, true);

Expand Down
9 changes: 9 additions & 0 deletions vite.config.js
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@@ -0,0 +1,9 @@
import { defineConfig } from 'vite';

// https://vitejs.dev/config/
export default defineConfig({
server: {
host: '0.0.0.0',
port: 8080,
},
});