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Chore: use resize-observer-polyfill to detect element resizes (#10779)

pull/10784/head
杨奕 2018-04-19 12:19:27 +08:00 committed by GitHub
parent 9063dcf9c9
commit 1f57345b19
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 21 additions and 171 deletions
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1
package.json
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@ -55,6 +55,7 @@
"babel-helper-vue-jsx-merge-props": "^2.0.0",
"deepmerge": "^1.2.0",
"normalize-wheel": "^1.0.1",
"resize-observer-polyfill": "^1.5.0",
"throttle-debounce": "^1.0.1"
},
"peerDependencies": {

179
src/utils/resize-event.js
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@ -1,190 +1,35 @@
/* Modified from https://github.com/sdecima/javascript-detect-element-resize
* version: 0.5.3
*
* The MIT License (MIT)
*
* Copyright (c) 2013 Sebastián Décima
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
import ResizeObserver from 'resize-observer-polyfill';
const isServer = typeof window === 'undefined';
/* istanbul ignore next */
const requestFrame = (function() {
if (isServer) return;
const raf = window.requestAnimationFrame || window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame ||
function(fn) {
return window.setTimeout(fn, 20);
};
return function(fn) {
return raf(fn);
};
})();
/* istanbul ignore next */
const cancelFrame = (function() {
if (isServer) return;
const cancel = window.cancelAnimationFrame || window.mozCancelAnimationFrame || window.webkitCancelAnimationFrame || window.clearTimeout;
return function(id) {
return cancel(id);
};
})();
/* istanbul ignore next */
const resetTrigger = function(element) {
const trigger = element.__resizeTrigger__;
const expand = trigger.firstElementChild;
const contract = trigger.lastElementChild;
const expandChild = expand.firstElementChild;
contract.scrollLeft = contract.scrollWidth;
contract.scrollTop = contract.scrollHeight;
expandChild.style.width = expand.offsetWidth + 1 + 'px';
expandChild.style.height = expand.offsetHeight + 1 + 'px';
expand.scrollLeft = expand.scrollWidth;
expand.scrollTop = expand.scrollHeight;
};
/* istanbul ignore next */
const checkTriggers = function(element) {
return element.offsetWidth !== element.__resizeLast__.width || element.offsetHeight !== element.__resizeLast__.height;
};
/* istanbul ignore next */
const scrollListener = function(event) {
resetTrigger(this);
if (this.__resizeRAF__) cancelFrame(this.__resizeRAF__);
this.__resizeRAF__ = requestFrame(() => {
if (checkTriggers(this)) {
this.__resizeLast__.width = this.offsetWidth;
this.__resizeLast__.height = this.offsetHeight;
this.__resizeListeners__.forEach((fn) => {
fn.call(this, event);
const resizeHandler = function(entries) {
for (let entry of entries) {
const listeners = entry.target.__resizeListeners__ || [];
if (listeners.length) {
listeners.forEach(fn => {
fn();
});
}
});
};
/* Detect CSS Animations support to detect element display/re-attach */
const attachEvent = isServer ? {} : document.attachEvent;
const DOM_PREFIXES = 'Webkit Moz O ms'.split(' ');
const START_EVENTS = 'webkitAnimationStart animationstart oAnimationStart MSAnimationStart'.split(' ');
const RESIZE_ANIMATION_NAME = 'resizeanim';
let animation = false;
let keyFramePrefix = '';
let animationStartEvent = 'animationstart';
/* istanbul ignore next */
if (!attachEvent && !isServer) {
const testElement = document.createElement('fakeelement');
if (testElement.style.animationName !== undefined) {
animation = true;
}
if (animation === false) {
let prefix = '';
for (var i = 0; i < DOM_PREFIXES.length; i++) {
if (testElement.style[DOM_PREFIXES[i] + 'AnimationName'] !== undefined) {
prefix = DOM_PREFIXES[i];
keyFramePrefix = '-' + prefix.toLowerCase() + '-';
animationStartEvent = START_EVENTS[i];
animation = true;
break;
}
}
}
}
let stylesCreated = false;
/* istanbul ignore next */
const createStyles = function() {
if (!stylesCreated && !isServer) {
const animationKeyframes = `@${keyFramePrefix}keyframes ${RESIZE_ANIMATION_NAME} { from { opacity: 0; } to { opacity: 0; } } `;
const animationStyle = `${keyFramePrefix}animation: 1ms ${RESIZE_ANIMATION_NAME};`;
// opacity: 0 works around a chrome bug https://code.google.com/p/chromium/issues/detail?id=286360
const css = `${animationKeyframes}
.resize-triggers { ${animationStyle} visibility: hidden; opacity: 0; }
.resize-triggers, .resize-triggers > div, .contract-trigger:before { content: \" \"; display: block; position: absolute; top: 0; left: 0; height: 100%; width: 100%; overflow: hidden; z-index: -1 }
.resize-triggers > div { background: #eee; overflow: auto; }
.contract-trigger:before { width: 200%; height: 200%; }`;
const head = document.head || document.getElementsByTagName('head')[0];
const style = document.createElement('style');
style.type = 'text/css';
if (style.styleSheet) {
style.styleSheet.cssText = css;
} else {
style.appendChild(document.createTextNode(css));
}
head.appendChild(style);
stylesCreated = true;
}
};
/* istanbul ignore next */
export const addResizeListener = function(element, fn) {
if (isServer) return;
if (attachEvent) {
element.attachEvent('onresize', fn);
} else {
if (!element.__resizeTrigger__) {
if (getComputedStyle(element).position === 'static') {
element.style.position = 'relative';
}
createStyles();
element.__resizeLast__ = {};
if (!element.__resizeListeners__) {
element.__resizeListeners__ = [];
const resizeTrigger = element.__resizeTrigger__ = document.createElement('div');
resizeTrigger.className = 'resize-triggers';
resizeTrigger.innerHTML = '<div class="expand-trigger"><div></div></div><div class="contract-trigger"></div>';
element.appendChild(resizeTrigger);
resetTrigger(element);
element.addEventListener('scroll', scrollListener, true);
/* Listen for a css animation to detect element display/re-attach */
if (animationStartEvent) {
resizeTrigger.addEventListener(animationStartEvent, function(event) {
if (event.animationName === RESIZE_ANIMATION_NAME) {
resetTrigger(element);
}
});
}
element.__ro__ = new ResizeObserver(resizeHandler);
element.__ro__.observe(element);
}
element.__resizeListeners__.push(fn);
}
};
/* istanbul ignore next */
export const removeResizeListener = function(element, fn) {
if (!element || !element.__resizeListeners__) return;
if (attachEvent) {
element.detachEvent('onresize', fn);
} else {
element.__resizeListeners__.splice(element.__resizeListeners__.indexOf(fn), 1);
if (!element.__resizeListeners__.length) {
element.removeEventListener('scroll', scrollListener);
element.__resizeTrigger__ = !element.removeChild(element.__resizeTrigger__);
}
element.__ro__.disconnect();
}
};

4
yarn.lock
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@ -7073,6 +7073,10 @@ requires-port@1.0.x, requires-port@1.x.x:
version "1.0.0"
resolved "https://registry.yarnpkg.com/requires-port/-/requires-port-1.0.0.tgz#925d2601d39ac485e091cf0da5c6e694dc3dcaff"
resize-observer-polyfill@^1.5.0:
version "1.5.0"
resolved "https://registry.yarnpkg.com/resize-observer-polyfill/-/resize-observer-polyfill-1.5.0.tgz#660ff1d9712a2382baa2cad450a4716209f9ca69"
resolve-dir@^0.1.0:
version "0.1.1"
resolved "https://registry.yarnpkg.com/resolve-dir/-/resolve-dir-0.1.1.tgz#b219259a5602fac5c5c496ad894a6e8cc430261e"