mirror of
https://github.com/LibreTranslate/LibreTranslate.git
synced 2024-12-30 10:10:37 +02:00
488 lines
19 KiB
JavaScript
488 lines
19 KiB
JavaScript
// @license magnet:?xt=urn:btih:0b31508aeb0634b347b8270c7bee4d411b5d4109&dn=agpl-3.0.txt AGPL-3.0
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// API host/endpoint
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var BaseUrl = window.location.protocol + "//" + window.location.host;
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var htmlRegex = /<(.*)>.*?|<(.*)\/>/;
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document.addEventListener('DOMContentLoaded', function(){
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var sidenavElems = document.querySelectorAll('.sidenav');
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var sidenavInstances = M.Sidenav.init(sidenavElems);
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var app = new Vue({
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el: '#app',
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delimiters: ['[[',']]'],
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data: {
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BaseUrl: BaseUrl,
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loading: true,
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error: "",
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langs: [],
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settings: {},
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sourceLang: "",
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targetLang: "",
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loadingTranslation: false,
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inputText: "",
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inputTextareaHeight: 250,
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savedTanslatedText: "",
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translatedText: "",
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output: "",
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charactersLimit: -1,
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detectedLangText: "",
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copyTextLabel: "Copy text",
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suggestions: false,
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isSuggesting: false,
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supportedFilesFormat : [],
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translationType: "text",
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inputFile: false,
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loadingFileTranslation: false,
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translatedFileUrl: false,
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filesTranslation: true,
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frontendTimeout: 500
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},
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mounted: function() {
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const self = this;
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const settingsRequest = new XMLHttpRequest();
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settingsRequest.open("GET", BaseUrl + "/frontend/settings", true);
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const langsRequest = new XMLHttpRequest();
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langsRequest.open("GET", BaseUrl + "/languages", true);
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settingsRequest.onload = function() {
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if (this.status >= 200 && this.status < 400) {
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self.settings = JSON.parse(this.response);
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self.sourceLang = self.settings.language.source.code;
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self.targetLang = self.settings.language.target.code;
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self.charactersLimit = self.settings.charLimit;
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self.suggestions = self.settings.suggestions;
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self.supportedFilesFormat = self.settings.supportedFilesFormat;
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self.filesTranslation = self.settings.filesTranslation;
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self.frontendTimeout = self.settings.frontendTimeout;
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if (langsRequest.response) {
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handleLangsResponse(self, langsRequest);
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} else {
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langsRequest.onload = function() {
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handleLangsResponse(self, this);
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}
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}
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} else {
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self.error = "Cannot load /frontend/settings";
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self.loading = false;
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}
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};
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settingsRequest.onerror = function() {
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self.error = "Error while calling /frontend/settings";
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self.loading = false;
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};
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langsRequest.onerror = function() {
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self.error = "Error while calling /languages";
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self.loading = false;
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};
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settingsRequest.send();
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langsRequest.send();
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},
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updated: function(){
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if (this.isSuggesting) return;
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M.FormSelect.init(this.$refs.sourceLangDropdown);
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M.FormSelect.init(this.$refs.targetLangDropdown);
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if (this.$refs.inputTextarea){
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this.$refs.inputTextarea.focus()
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if (this.inputText === ""){
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this.$refs.inputTextarea.style.height = this.inputTextareaHeight + "px";
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this.$refs.translatedTextarea.style.height = this.inputTextareaHeight + "px";
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} else{
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this.$refs.inputTextarea.style.height = this.$refs.translatedTextarea.style.height = "1px";
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this.$refs.inputTextarea.style.height = Math.max(this.inputTextareaHeight, this.$refs.inputTextarea.scrollHeight + 32) + "px";
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this.$refs.translatedTextarea.style.height = Math.max(this.inputTextareaHeight, this.$refs.translatedTextarea.scrollHeight + 32) + "px";
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}
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}
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if (this.charactersLimit !== -1 && this.inputText.length >= this.charactersLimit){
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this.inputText = this.inputText.substring(0, this.charactersLimit);
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}
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// Update "selected" attribute (to overcome a vue.js limitation)
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// but properly display checkmarks on supported browsers.
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// Also change the <select> width value depending on the <option> length
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if (this.$refs.sourceLangDropdown) {
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updateSelectedAttribute(this.$refs.sourceLangDropdown, this.sourceLang);
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}
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if (this.$refs.targetLangDropdown) {
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updateSelectedAttribute(this.$refs.targetLangDropdown, this.targetLang);
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}
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},
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computed: {
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requestCode: function(){
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return ['const res = await fetch("' + this.BaseUrl + '/translate", {',
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' method: "POST",',
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' body: JSON.stringify({',
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' q: ' + this.$options.filters.escape(this.inputText) + ',',
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' source: ' + this.$options.filters.escape(this.sourceLang) + ',',
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' target: ' + this.$options.filters.escape(this.targetLang) + ',',
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' format: "' + (this.isHtml ? "html" : "text") + '",',
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' api_key: "' + (localStorage.getItem("api_key") || "") + '"',
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' }),',
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' headers: { "Content-Type": "application/json" }',
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'});',
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'',
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'console.log(await res.json());'].join("\n");
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},
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supportedFilesFormatFormatted: function() {
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return this.supportedFilesFormat.join(', ');
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},
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isHtml: function(){
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return htmlRegex.test(this.inputText);
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},
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canSendSuggestion: function(){
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return this.translatedText.trim() !== "" && this.translatedText !== this.savedTanslatedText;
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},
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targetLangs: function(){
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if (!this.sourceLang) return this.langs;
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else{
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var lang = this.langs.find(l => l.code === this.sourceLang);
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if (!lang) return this.langs;
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return lang.targets.map(t => this.langs.find(l => l.code === t));
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}
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}
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},
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filters: {
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escape: function(v){
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return JSON.stringify(v);
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},
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highlight: function(v){
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return Prism.highlight(v, Prism.languages.javascript, 'javascript');
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}
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},
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methods: {
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abortPreviousTransRequest: function(){
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if (this.transRequest){
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this.transRequest.abort();
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this.transRequest = null;
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}
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},
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swapLangs: function(e){
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this.closeSuggestTranslation(e);
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// Make sure that we can swap
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// by checking that the current target language
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// has source language as target
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var tgtLang = this.langs.find(l => l.code === this.targetLang);
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if (tgtLang.targets.indexOf(this.sourceLang) === -1) return; // Not supported
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var t = this.sourceLang;
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this.sourceLang = this.targetLang;
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this.targetLang = t;
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this.inputText = this.translatedText;
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this.translatedText = "";
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this.handleInput(e);
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},
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dismissError: function(){
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this.error = '';
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},
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getQueryParam: function (key) {
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const params = new URLSearchParams(window.location.search);
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return params.get(key)
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},
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updateQueryParam: function (key, value) {
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let searchParams = new URLSearchParams(window.location.search)
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searchParams.set(key, value);
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let newRelativePathQuery = window.location.pathname + '?' + searchParams.toString();
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history.pushState(null, '', newRelativePathQuery);
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},
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handleInput: function(e){
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this.closeSuggestTranslation(e)
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this.updateQueryParam('source', this.sourceLang)
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this.updateQueryParam('target', this.targetLang)
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this.updateQueryParam('q', encodeURI(this.inputText))
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if (this.timeout) clearTimeout(this.timeout);
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this.timeout = null;
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this.detectedLangText = "";
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if (this.inputText === ""){
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this.translatedText = "";
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this.output = "";
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this.abortPreviousTransRequest();
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this.loadingTranslation = false;
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return;
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}
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var self = this;
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self.loadingTranslation = true;
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this.timeout = setTimeout(function(){
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self.abortPreviousTransRequest();
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var request = new XMLHttpRequest();
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self.transRequest = request;
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var data = new FormData();
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data.append("q", self.inputText);
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data.append("source", self.sourceLang);
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data.append("target", self.targetLang);
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data.append("format", self.isHtml ? "html" : "text");
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data.append("api_key", localStorage.getItem("api_key") || "");
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request.open('POST', BaseUrl + '/translate', true);
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request.onload = function() {
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try{
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var res = JSON.parse(this.response);
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// Success!
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if (res.translatedText !== undefined){
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self.translatedText = res.translatedText;
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self.loadingTranslation = false;
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self.output = JSON.stringify(res, null, 4);
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if(self.sourceLang == "auto" && res.detectedLanguage !== undefined){
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let lang = self.langs.find(l => l.code === res.detectedLanguage.language)
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self.detectedLangText = ": " + (lang !== undefined ? lang.name : res.detectedLanguage.language) + " (" + res.detectedLanguage.confidence + "%)";
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}
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} else{
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throw new Error(res.error || "Unknown error");
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}
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} catch (e) {
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self.error = e.message;
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self.loadingTranslation = false;
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}
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};
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request.onerror = function() {
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self.error = "Error while calling /translate";
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self.loadingTranslation = false;
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};
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request.send(data);
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}, self.frontendTimeout);
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},
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copyText: function(e){
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e.preventDefault();
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this.$refs.translatedTextarea.select();
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this.$refs.translatedTextarea.setSelectionRange(0, 9999999); /* For mobile devices */
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document.execCommand("copy");
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if (this.copyTextLabel === "Copy text"){
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this.copyTextLabel = "Copied";
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var self = this;
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setTimeout(function(){
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self.copyTextLabel = "Copy text";
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}, 1500);
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}
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},
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suggestTranslation: function(e) {
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e.preventDefault();
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this.savedTanslatedText = this.translatedText
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this.isSuggesting = true;
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this.$nextTick(() => {
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this.$refs.translatedTextarea.focus();
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});
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},
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closeSuggestTranslation: function(e) {
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if(this.isSuggesting) {
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e.preventDefault();
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// this.translatedText = this.savedTanslatedText
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}
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this.isSuggesting = false;
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},
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sendSuggestion: function(e) {
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e.preventDefault();
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var self = this;
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var request = new XMLHttpRequest();
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self.transRequest = request;
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var data = new FormData();
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data.append("q", self.inputText);
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data.append("s", self.translatedText);
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data.append("source", self.sourceLang);
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data.append("target", self.targetLang);
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data.append("api_key", localStorage.getItem("api_key") || "");
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request.open('POST', BaseUrl + '/suggest', true);
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request.onload = function() {
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try{
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var res = JSON.parse(this.response);
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if (res.success){
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M.toast({html: 'Thanks for your correction. Note the suggestion will not take effect right away.'})
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self.closeSuggestTranslation(e)
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}else{
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throw new Error(res.error || "Unknown error");
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}
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}catch(e){
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self.error = e.message;
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self.closeSuggestTranslation(e)
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}
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};
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request.onerror = function() {
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self.error = "Error while calling /suggest";
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self.loadingTranslation = false;
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};
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request.send(data);
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},
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deleteText: function(e){
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e.preventDefault();
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this.inputText = this.translatedText = this.output = "";
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this.$refs.inputTextarea.focus();
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},
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switchType: function(type) {
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this.translationType = type;
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},
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handleInputFile: function(e) {
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this.inputFile = e.target.files[0];
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},
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removeFile: function(e) {
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e.preventDefault()
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this.inputFile = false;
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this.translatedFileUrl = false;
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this.loadingFileTranslation = false;
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},
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translateFile: function(e) {
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e.preventDefault();
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let self = this;
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let translateFileRequest = new XMLHttpRequest();
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translateFileRequest.open("POST", BaseUrl + "/translate_file", true);
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let data = new FormData();
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data.append("file", this.inputFile);
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data.append("source", this.sourceLang);
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data.append("target", this.targetLang);
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data.append("api_key", localStorage.getItem("api_key") || "");
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this.loadingFileTranslation = true
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translateFileRequest.onload = function() {
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if (translateFileRequest.readyState === 4 && translateFileRequest.status === 200) {
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try{
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self.loadingFileTranslation = false;
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let res = JSON.parse(this.response);
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if (res.translatedFileUrl){
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self.translatedFileUrl = res.translatedFileUrl;
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let link = document.createElement("a");
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link.target = "_blank";
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link.href = self.translatedFileUrl;
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link.click();
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}else{
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throw new Error(res.error || "Unknown error");
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}
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}catch(e){
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self.error = e.message;
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self.loadingFileTranslation = false;
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self.inputFile = false;
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}
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}else{
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let res = JSON.parse(this.response);
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self.error = res.error || "Unknown error";
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self.loadingFileTranslation = false;
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self.inputFile = false;
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}
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}
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translateFileRequest.onerror = function() {
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self.error = "Error while calling /translate_file";
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self.loadingFileTranslation = false;
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self.inputFile = false;
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};
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translateFileRequest.send(data);
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}
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}
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});
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});
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/**
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* @param {object} self
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* @param {XMLHttpRequest} response
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*/
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function handleLangsResponse(self, response) {
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if (response.status >= 200 && response.status < 400) {
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self.langs = JSON.parse(response.response);
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if (self.langs.length === 0){
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self.loading = false;
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self.error = "No languages available. Did you install the models correctly?"
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return;
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}
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self.langs.push({ name: "Auto Detect", code: "auto", targets: self.langs.map(l => l.code)})
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const sourceLanguage = self.langs.find(l => l.code === self.getQueryParam("source"))
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const targetLanguage = self.langs.find(l => l.code === self.getQueryParam("target"))
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if (sourceLanguage) {
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self.sourceLang = sourceLanguage.code
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}
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if (targetLanguage) {
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self.targetLang = targetLanguage.code
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}
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const defaultText = self.getQueryParam("q")
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if (defaultText) {
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self.inputText = decodeURI(defaultText)
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self.handleInput(new Event('none'))
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}
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} else {
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self.error = "Cannot load /languages";
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}
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self.loading = false;
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}
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/**
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* @param {object} langDropdown
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* @param {string} lang
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*/
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function updateSelectedAttribute(langDropdown, lang) {
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for (const child of langDropdown.children) {
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if (child.value === lang){
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child.setAttribute('selected', '');
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langDropdown.style.width = getTextWidth(child.text) + 24 + 'px';
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} else{
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child.removeAttribute('selected');
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}
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}
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}
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function getTextWidth(text) {
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var canvas = getTextWidth.canvas || (getTextWidth.canvas = document.createElement("canvas"));
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var ctx = canvas.getContext("2d");
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ctx.font = 'bold 16px sans-serif';
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var textWidth = Math.ceil(ctx.measureText(text).width);
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return textWidth;
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}
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function setApiKey(){
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var prevKey = localStorage.getItem("api_key") || "";
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var newKey = "";
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var instructions = "contact the server operator.";
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if (window.getApiKeyLink) instructions = "press the \"Get API Key\" link."
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newKey = window.prompt("Type in your API Key. If you need an API key, " + instructions, prevKey);
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if (newKey === null) newKey = "";
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localStorage.setItem("api_key", newKey);
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}
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// @license-end
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