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<script>
import Vue from 'vue';
import SuggestionDiff from './suggestion_diff.vue';
import Flash from '~/flash';
export default {
components: { SuggestionDiff },
props: {
fromLine: {
type: Number,
required: false,
default: 0,
},
fromContent: {
type: String,
required: false,
default: '',
},
lineType: {
type: String,
required: false,
default: '',
},
suggestions: {
type: Array,
required: false,
default: () => [],
},
noteHtml: {
type: String,
required: true,
},
disabled: {
type: Boolean,
required: false,
default: false,
},
helpPagePath: {
type: String,
required: true,
},
},
data() {
return {
isRendered: false,
};
},
watch: {
suggestions() {
this.reset();
},
noteHtml() {
this.reset();
},
},
mounted() {
this.renderSuggestions();
},
methods: {
renderSuggestions() {
// swaps out suggestion(s) markdown with rich diff components
// (while still keeping non-suggestion markdown in place)
if (!this.noteHtml) return;
const { container } = this.$refs;
const suggestionElements = container.querySelectorAll('.js-render-suggestion');
if (this.lineType === 'old') {
Flash('Unable to apply suggestions to a deleted line.', 'alert', this.$el);
}
suggestionElements.forEach((suggestionEl, i) => {
const suggestionParentEl = suggestionEl.parentElement;
const newLines = this.extractNewLines(suggestionParentEl);
const diffComponent = this.generateDiff(newLines, i);
diffComponent.$mount(suggestionParentEl);
});
this.isRendered = true;
},
extractNewLines(suggestionEl) {
// extracts the suggested lines from the markdown
// calculates a line number for each line
const newLines = suggestionEl.querySelectorAll('.line');
const fromLine = this.suggestions.length ? this.suggestions[0].from_line : this.fromLine;
const lines = [];
newLines.forEach((line, i) => {
const content = `${line.innerText}\n`;
const lineNumber = fromLine + i;
lines.push({ content, lineNumber });
});
return lines;
},
generateDiff(newLines, suggestionIndex) {
// generates the diff <suggestion-diff /> component
// all `suggestion` markdown will be swapped out by this component
const { suggestions, disabled, helpPagePath } = this;
const suggestion =
suggestions && suggestions[suggestionIndex] ? suggestions[suggestionIndex] : {};
const fromContent = suggestion.from_content || this.fromContent;
const fromLine = suggestion.from_line || this.fromLine;
const SuggestionDiffComponent = Vue.extend(SuggestionDiff);
const suggestionDiff = new SuggestionDiffComponent({
propsData: { newLines, fromLine, fromContent, disabled, suggestion, helpPagePath },
});
suggestionDiff.$on('apply', ({ suggestionId, callback }) => {
this.$emit('apply', { suggestionId, callback, flashContainer: this.$el });
});
return suggestionDiff;
},
reset() {
// resets the container HTML (replaces it with the updated noteHTML)
// calls `renderSuggestions` once the updated noteHTML is added to the DOM
this.$refs.container.innerHTML = this.noteHtml;
this.isRendered = false;
this.renderSuggestions();
this.$nextTick(() => this.renderSuggestions());
},
},
};
</script>
<template>
<div>
<div class="flash-container js-suggestions-flash"></div>
<div v-show="isRendered" ref="container" v-html="noteHtml"></div>
</div>
</template>
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