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<script>
import { GlSkeletonLoader } from '@gitlab/ui';
import { forEach, escape } from 'lodash';
import SafeHtml from '~/vue_shared/directives/safe_html';
import axios from '~/lib/utils/axios_utils';
import { __ } from '~/locale';
import { renderGFM } from '~/behaviors/markdown/render_gfm';
const { CancelToken } = axios;
let axiosSource;
export default {
components: {
GlSkeletonLoader,
},
directives: {
SafeHtml,
},
props: {
content: {
type: String,
required: true,
},
commitSha: {
type: String,
required: false,
default: '',
},
filePath: {
type: String,
required: false,
default: '',
},
projectPath: {
type: String,
required: true,
},
images: {
type: Object,
required: false,
default: () => ({}),
},
},
data() {
return {
previewContent: null,
isLoading: false,
};
},
watch: {
content() {
this.previewContent = null;
},
},
created() {
axiosSource = CancelToken.source();
this.fetchMarkdownPreview();
},
updated() {
this.fetchMarkdownPreview();
},
destroyed() {
if (this.isLoading) axiosSource.cancel(__('Cancelling Preview'));
},
methods: {
fetchMarkdownPreview() {
if (this.content && this.previewContent === null) {
this.isLoading = true;
const postBody = {
text: this.content,
path: this.filePath,
};
if (this.commitSha) {
postBody.ref = this.commitSha;
}
const postOptions = {
cancelToken: axiosSource.token,
};
axios
.post(
`${gon.relative_url_root}/${this.projectPath}/preview_markdown`,
postBody,
postOptions,
)
.then(({ data }) => {
let previewContent = data.body;
forEach(this.images, ({ src, title = '', alt }, key) => {
previewContent = previewContent.replace(
key,
`<img src="${escape(src)}" title="${escape(title)}" alt="${escape(alt)}">`,
);
});
this.previewContent = previewContent;
this.isLoading = false;
this.$nextTick(() => {
renderGFM(this.$refs.markdownPreview);
});
})
.catch(() => {
this.previewContent = __('An error occurred while fetching Markdown preview');
this.isLoading = false;
});
}
},
},
safeHtmlConfig: { ADD_TAGS: ['gl-emoji', 'use'] },
};
</script>
<template>
<div ref="markdownPreview" class="md-previewer" data-testid="md-previewer">
<gl-skeleton-loader v-if="isLoading" />
<div
v-else
v-safe-html:[$options.safeHtmlConfig]="previewContent"
class="md gl-ml-auto gl-mr-auto"
></div>
</div>
</template>
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