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Improve <SvgIcon> to make it output svg node and optimize performance (#23570)

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Before, the Vue `<SvgIcon>` always outputs DOM nodes like: 

```html
<span class="outer-class">
    <svg class="class-name-defined" ...></svg>
</span>
```

The `span` is redundant and I guess such layout and the inconsistent
`class/class-name` attributes would cause bugs sooner or later.

This PR makes the `<SvgIcon>` clear, and it's faster than before,
because it doesn't need to parse the whole SVG string.

Before: 

<details>

![image](https://user-images.githubusercontent.com/2114189/226156474-ce2c57cd-b869-486a-b75b-1eebdac8cdf7.png)

</details>

After:

![image](https://user-images.githubusercontent.com/2114189/226155774-108f49ed-7512-40c3-94a2-a6e8da18063d.png)

---------

Co-authored-by: silverwind <me@silverwind.io>
This commit is contained in:
wxiaoguang 2023-03-23 11:24:16 +08:00 committed by GitHub
parent 1d35fa0e78
commit 389e83f7eb
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GPG key ID: 4AEE18F83AFDEB23
9 changed files with 77 additions and 24 deletions
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2
templates/projects/view.tmpl
View file

@ -224,7 +224,7 @@
{{- range index $.LinkedPRs .ID}}
<div class="meta gt-my-2">
<a href="{{$.RepoLink}}/pulls/{{.Index}}">
<span class="gt-m-0 {{if .PullRequest.HasMerged}}purple{{else if .IsClosed}}red{{else}}green{{end}}">{{svg "octicon-git-merge" 16 "gt-mr-2 gt-vm"}}</span>
<span class="gt-m-0 text {{if .PullRequest.HasMerged}}purple{{else if .IsClosed}}red{{else}}green{{end}}">{{svg "octicon-git-merge" 16 "gt-mr-2 gt-vm"}}</span>
<span class="gt-vm">{{.Title}} <span class="text light grey">#{{.Index}}</span></span>
</a>
</div>

2
templates/repo/projects/view.tmpl
View file

@ -235,7 +235,7 @@
{{- range index $.LinkedPRs .ID}}
<div class="meta gt-my-2">
<a href="{{$.RepoLink}}/pulls/{{.Index}}">
<span class="gt-m-0 {{if .PullRequest.HasMerged}}purple{{else if .IsClosed}}red{{else}}green{{end}}">{{svg "octicon-git-merge" 16 "gt-mr-2 gt-vm"}}</span>
<span class="gt-m-0 text {{if .PullRequest.HasMerged}}purple{{else if .IsClosed}}red{{else}}green{{end}}">{{svg "octicon-git-merge" 16 "gt-mr-2 gt-vm"}}</span>
<span class="gt-vm">{{.Title}} <span class="text light grey">#{{.Index}}</span></span>
</a>
</div>

2
templates/user/settings/keys_gpg.tmpl
View file

@ -54,7 +54,7 @@
{{end}}
</div>
<div class="left floated content">
<span class="{{if or .ExpiredUnix.IsZero ($.PageStartTime.Before .ExpiredUnix.AsTime)}}green{{end}}">{{svg "octicon-key" 32}}</span>
<span class="text {{if or .ExpiredUnix.IsZero ($.PageStartTime.Before .ExpiredUnix.AsTime)}}green{{end}}">{{svg "octicon-key" 32}}</span>
</div>
<div class="content">
{{if .Verified}}

2
templates/user/settings/keys_ssh.tmpl
View file

@ -47,7 +47,7 @@
</div>
<div class="left floated content">
<span class="tooltip{{if .HasRecentActivity}} green{{end}}" {{if .HasRecentActivity}}data-content="{{$.locale.Tr "settings.key_state_desc"}}"{{end}}>{{svg "octicon-key" 32}}</span>
<span class="tooltip text {{if .HasRecentActivity}}green{{end}}" {{if .HasRecentActivity}}data-content="{{$.locale.Tr "settings.key_state_desc"}}"{{end}}>{{svg "octicon-key" 32}}</span>
</div>
<div class="content">
{{if .Verified}}

12
web_src/css/base.css
View file

@ -2420,18 +2420,6 @@ a.ui.basic.label:hover {
height: 2.1666em !important;
}
span.green .svg {
color: var(--color-green);
}
span.red .svg {
color: var(--color-red);
}
span.purple .svg {
color: var(--color-purple);
}
.migrate .svg.gitea-git {
color: var(--color-git);
}

4
web_src/js/components/ActionRunStatus.vue
View file

@ -1,10 +1,10 @@
<template>
<SvgIcon name="octicon-check-circle-fill" class="green" :size="size" :class-name="className" v-if="status === 'success'"/>
<SvgIcon name="octicon-check-circle-fill" class="ui text green" :size="size" :class-name="className" v-if="status === 'success'"/>
<SvgIcon name="octicon-skip" class="ui text grey" :size="size" :class-name="className" v-else-if="status === 'skipped'"/>
<SvgIcon name="octicon-clock" class="ui text yellow" :size="size" :class-name="className" v-else-if="status === 'waiting'"/>
<SvgIcon name="octicon-blocked" class="ui text yellow" :size="size" :class-name="className" v-else-if="status === 'blocked'"/>
<SvgIcon name="octicon-meter" class="ui text yellow" :size="size" :class-name="'job-status-rotate ' + className" v-else-if="status === 'running'"/>
<SvgIcon name="octicon-x-circle-fill" class="red" :size="size" v-else/>
<SvgIcon name="octicon-x-circle-fill" class="ui text red" :size="size" v-else/>
</template>
<script>

2
web_src/js/components/ContextPopup.vue
View file

@ -3,7 +3,7 @@
<div v-if="loading" class="ui active centered inline loader"/>
<div v-if="!loading && issue !== null">
<p><small>{{ issue.repository.full_name }} on {{ createdAt }}</small></p>
<p><svg-icon :name="icon" :class="[color]" /> <strong>{{ issue.title }}</strong> #{{ issue.number }}</p>
<p><svg-icon :name="icon" :class="['text', color]" /> <strong>{{ issue.title }}</strong> #{{ issue.number }}</p>
<p>{{ body }}</p>
<div>
<div

53
web_src/js/svg.js
View file

@ -105,13 +105,32 @@ export function svg(name, size = 16, className = '') {
const document = parser.parseFromString(svgs[name], 'image/svg+xml');
const svgNode = document.firstChild;
if (size !== 16) svgNode.setAttribute('width', String(size));
if (size !== 16) svgNode.setAttribute('height', String(size));
// filter array to remove empty string
if (size !== 16) {
svgNode.setAttribute('width', String(size));
svgNode.setAttribute('height', String(size));
}
if (className) svgNode.classList.add(...className.split(/\s+/).filter(Boolean));
return serializer.serializeToString(svgNode);
}
export function svgParseOuterInner(name) {
const svgStr = svgs[name];
if (!svgStr) throw new Error(`Unknown SVG icon: ${name}`);
// parse the SVG string to 2 parts
// * svgInnerHtml: the inner part of the SVG, will be used as the content of the <svg> VNode
// * svgOuter: the outer part of the SVG, including attributes
// the builtin SVG contents are clean, so it's safe to use `indexOf` to split the content:
// eg: <svg outer-attributes>${svgInnerHtml}</svg>
const p1 = svgStr.indexOf('>'), p2 = svgStr.lastIndexOf('<');
if (p1 === -1 || p2 === -1) throw new Error(`Invalid SVG icon: ${name}`);
const svgInnerHtml = svgStr.slice(p1 + 1, p2);
const svgOuterHtml = svgStr.slice(0, p1 + 1) + svgStr.slice(p2);
const svgDoc = parser.parseFromString(svgOuterHtml, 'image/svg+xml');
const svgOuter = svgDoc.firstChild;
return {svgOuter, svgInnerHtml};
}
export const SvgIcon = {
name: 'SvgIcon',
props: {
@ -120,6 +139,32 @@ export const SvgIcon = {
className: {type: String, default: ''},
},
render() {
return h('span', {innerHTML: svg(this.name, this.size, this.className)});
const {svgOuter, svgInnerHtml} = svgParseOuterInner(this.name);
// https://vuejs.org/guide/extras/render-function.html#creating-vnodes
// the `^` is used for attr, set SVG attributes like 'width', `aria-hidden`, `viewBox`, etc
const attrs = {};
for (const attr of svgOuter.attributes) {
if (attr.name === 'class') continue;
attrs[`^${attr.name}`] = attr.value;
}
attrs[`^width`] = this.size;
attrs[`^height`] = this.size;
// make the <SvgIcon class="foo" class-name="bar"> classes work together
const classes = [];
for (const cls of svgOuter.classList) {
classes.push(cls);
}
// TODO: drop the `className/class-name` prop in the future, only use "class" prop
if (this.className) {
classes.push(...this.className.split(/\s+/).filter(Boolean));
}
// create VNode
return h('svg', {
...attrs,
class: classes,
innerHTML: svgInnerHtml,
});
},
};

22
web_src/js/svg.test.js
View file

@ -1,8 +1,28 @@
import {expect, test} from 'vitest';
import {svg} from './svg.js';
import {svg, SvgIcon, svgParseOuterInner} from './svg.js';
import {createApp, h} from 'vue';
test('svg', () => {
expect(svg('octicon-repo')).toMatch(/^<svg/);
expect(svg('octicon-repo', 16)).toContain('width="16"');
expect(svg('octicon-repo', 32)).toContain('width="32"');
});
test('svgParseOuterInner', () => {
const {svgOuter, svgInnerHtml} = svgParseOuterInner('octicon-repo');
expect(svgOuter.nodeName).toMatch('svg');
expect(svgOuter.classList.contains('octicon-repo')).toBeTruthy();
expect(svgInnerHtml).toContain('<path');
});
test('SvgIcon', () => {
const root = document.createElement('div');
createApp({render: () => h(SvgIcon, {name: 'octicon-link', size: 24, class: 'base', className: 'extra'})}).mount(root);
const node = root.firstChild;
expect(node.nodeName).toEqual('svg');
expect(node.getAttribute('width')).toEqual('24');
expect(node.getAttribute('height')).toEqual('24');
expect(node.classList.contains('octicon-link')).toBeTruthy();
expect(node.classList.contains('base')).toBeTruthy();
expect(node.classList.contains('extra')).toBeTruthy();
});