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ant-design-vue/components/_util/responsiveObserve.js

95 lines
2.2 KiB

// matchMedia polyfill for
// https://github.com/WickyNilliams/enquire.js/issues/82
let enquire;
// TODO: Will be removed in antd 4.0 because we will no longer support ie9
if (typeof window !== 'undefined') {
const matchMediaPolyfill = mediaQuery => {
return {
media: mediaQuery,
matches: false,
addListener() {},
removeListener() {},
};
};
// ref: https://github.com/ant-design/ant-design/issues/18774
if (!window.matchMedia) window.matchMedia = matchMediaPolyfill;
// eslint-disable-next-line global-require
enquire = require('enquire.js');
}
export const responsiveArray = ['xxl', 'xl', 'lg', 'md', 'sm', 'xs'];
export const responsiveMap = {
xs: '(max-width: 575px)',
sm: '(min-width: 576px)',
md: '(min-width: 768px)',
lg: '(min-width: 992px)',
xl: '(min-width: 1200px)',
xxl: '(min-width: 1600px)',
};
let subscribers = [];
let subUid = -1;
let screens = {};
const responsiveObserve = {
dispatch(pointMap) {
screens = pointMap;
if (subscribers.length < 1) {
return false;
}
subscribers.forEach(item => {
item.func(screens);
});
return true;
},
subscribe(func) {
if (subscribers.length === 0) {
this.register();
}
const token = (++subUid).toString();
subscribers.push({
token,
func,
});
func(screens);
return token;
},
unsubscribe(token) {
subscribers = subscribers.filter(item => item.token !== token);
if (subscribers.length === 0) {
this.unregister();
}
},
unregister() {
Object.keys(responsiveMap).map(screen => enquire.unregister(responsiveMap[screen]));
},
register() {
Object.keys(responsiveMap).map(screen =>
enquire.register(responsiveMap[screen], {
match: () => {
const pointMap = {
...screens,
[screen]: true,
};
this.dispatch(pointMap);
},
unmatch: () => {
const pointMap = {
...screens,
[screen]: false,
};
this.dispatch(pointMap);
},
// Keep a empty destory to avoid triggering unmatch when unregister
destroy() {},
}),
);
},
};
export default responsiveObserve;