misskey/src/client/app/common/views/components/mfm.ts

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import Vue, { VNode } from 'vue';
import { length } from 'stringz';
import { Node } from '../../../../../mfm/parser';
import parse from '../../../../../mfm/parse';
import MkUrl from './url.vue';
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import { concat } from '../../../../../prelude/array';
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import MkFormula from './formula.vue';
import MkGoogle from './google.vue';
import { toUnicode } from 'punycode';
import syntaxHighlight from '../../../../../mfm/syntax-highlight';
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function getTextCount(tokens: Node[]): number {
let count = 0;
const extract = (tokens: Node[]) => {
tokens.filter(x => x.name === 'text').forEach(x => {
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count += length(x.props.text);
});
tokens.filter(x => x.children).forEach(x => {
extract(x.children);
});
};
extract(tokens);
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return count;
}
function getChildrenCount(tokens: Node[]): number {
let count = 0;
const extract = (tokens: Node[]) => {
tokens.filter(x => x.children).forEach(x => {
count++;
extract(x.children);
});
};
extract(tokens);
return count;
}
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export default Vue.component('misskey-flavored-markdown', {
props: {
text: {
type: String,
required: true
},
ast: {
type: [],
required: false
},
shouldBreak: {
type: Boolean,
default: true
},
author: {
type: Object,
default: null
},
i: {
type: Object,
default: null
},
customEmojis: {
required: false,
}
},
render(createElement) {
if (this.text == null || this.text == '') return;
let ast: Node[];
if (this.ast == null) {
// Parse text to ast
ast = parse(this.text);
} else {
ast = this.ast as Node[];
}
let bigCount = 0;
let motionCount = 0;
const genEl = (ast: Node[]) => concat(ast.map((token): VNode[] => {
switch (token.name) {
case 'text': {
const text = token.props.text.replace(/(\r\n|\n|\r)/g, '\n');
if (this.shouldBreak) {
const x = text.split('\n')
.map(t => t == '' ? [createElement('br')] : [createElement('span', t), createElement('br')]);
x[x.length - 1].pop();
return x;
} else {
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return [createElement('span', text.replace(/\n/g, ' '))];
}
}
case 'bold': {
return [createElement('b', genEl(token.children))];
}
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case 'strike': {
return [createElement('del', genEl(token.children))];
}
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case 'italic': {
return (createElement as any)('i', {
attrs: {
style: 'font-style: oblique;'
},
}, genEl(token.children));
}
case 'big': {
bigCount++;
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const isLong = getTextCount(token.children) > 10 || getChildrenCount(token.children) > 5;
const isMany = bigCount > 3;
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return (createElement as any)('strong', {
attrs: {
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style: `display: inline-block; font-size: ${ isMany ? '100%' : '150%' };`
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},
directives: [this.$store.state.settings.disableAnimatedMfm || isLong || isMany ? {} : {
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name: 'animate-css',
value: { classes: 'tada', iteration: 'infinite' }
}]
}, genEl(token.children));
}
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case 'small': {
return [createElement('small', genEl(token.children))];
}
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case 'center': {
return [createElement('div', {
attrs: {
style: 'text-align:center;'
}
}, genEl(token.children))];
}
case 'motion': {
motionCount++;
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const isLong = getTextCount(token.children) > 10 || getChildrenCount(token.children) > 5;
const isMany = motionCount > 3;
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return (createElement as any)('span', {
attrs: {
style: 'display: inline-block;'
},
directives: [this.$store.state.settings.disableAnimatedMfm || isLong || isMany ? {} : {
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name: 'animate-css',
value: { classes: 'rubberBand', iteration: 'infinite' }
}]
}, genEl(token.children));
}
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case 'url': {
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return [createElement(MkUrl, {
key: Math.random(),
props: {
url: token.props.url,
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target: '_blank',
style: 'color:var(--mfmLink);'
}
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})];
}
case 'link': {
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return [createElement('a', {
attrs: {
class: 'link',
href: token.props.url,
target: '_blank',
title: token.props.url,
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style: 'color:var(--mfmLink);'
}
}, genEl(token.children))];
}
case 'mention': {
const host = token.props.host == null && this.author && this.author.host != null ? this.author.host : token.props.host;
const canonical = host != null ? `@${token.props.username}@${toUnicode(host)}` : `@${token.props.username}`;
return (createElement as any)('router-link', {
key: Math.random(),
attrs: {
to: `/${canonical}`,
// TODO
//dataIsMe: (this as any).i && getAcct((this as any).i) == getAcct(token),
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style: 'color:var(--mfmMention);'
},
directives: [{
name: 'user-preview',
value: canonical
}]
}, canonical);
}
case 'hashtag': {
return [createElement('router-link', {
key: Math.random(),
attrs: {
to: `/tags/${encodeURIComponent(token.props.hashtag)}`,
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style: 'color:var(--mfmHashtag);'
}
}, `#${token.props.hashtag}`)];
}
case 'blockCode': {
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return [createElement('pre', {
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class: 'code'
}, [
createElement('code', {
domProps: {
innerHTML: syntaxHighlight(token.props.code)
}
})
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])];
}
case 'inlineCode': {
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return [createElement('code', {
domProps: {
innerHTML: syntaxHighlight(token.props.code)
}
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})];
}
case 'quote': {
if (this.shouldBreak) {
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return [createElement('div', {
attrs: {
class: 'quote'
}
}, genEl(token.children))];
} else {
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return [createElement('span', {
attrs: {
class: 'quote'
}
}, genEl(token.children))];
}
}
case 'title': {
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return [createElement('div', {
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attrs: {
class: 'title'
}
}, genEl(token.children))];
}
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case 'emoji': {
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const customEmojis = (this.$root.getMetaSync() || { emojis: [] }).emojis || [];
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return [createElement('mk-emoji', {
key: Math.random(),
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attrs: {
emoji: token.props.emoji,
name: token.props.name
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},
props: {
customEmojis: this.customEmojis || customEmojis
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}
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})];
}
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case 'math': {
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//const MkFormula = () => import('./formula.vue').then(m => m.default);
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return [createElement(MkFormula, {
key: Math.random(),
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props: {
formula: token.props.formula
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}
})];
}
case 'search': {
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//const MkGoogle = () => import('./google.vue').then(m => m.default);
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return [createElement(MkGoogle, {
key: Math.random(),
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props: {
q: token.props.query
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}
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})];
}
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default: {
console.log('unknown ast type:', token.name);
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return [];
}
}
}));
// Parse ast to DOM
return createElement('span', genEl(ast));
}
});