Dịch văn bản trong tài liệu trên Google Tài liệu

Hướng dẫn bắt đầu nhanh này sẽ tạo một tiện ích bổ sung cho Trình chỉnh sửa Google Tài liệu để dịch văn bản đã chọn trong một tài liệu.

Mục tiêu

• Thiết lập tập lệnh.
• Chạy tập lệnh.

Điều kiện tiên quyết

Để sử dụng mẫu này, bạn cần đáp ứng các điều kiện tiên quyết sau:

• Một Tài khoản Google (tài khoản Google Workspace có thể cần được quản trị viên phê duyệt).
• Một trình duyệt web có quyền truy cập vào Internet.

Thiết lập tập lệnh

1. Tạo một tài liệu Google Tài liệu tại docs.new.
2. Nhấp vào Tiện ích mở rộng > Apps Script.
3. Nhấp vào Dự án không có tiêu đề.
4. Đổi tên dự án Apps Script thành Translate Docs rồi nhấp vào Đổi tên.
5. Bên cạnh tệp Code.gs, hãy nhấp vào biểu tượng Tuỳ chọn khác more_vert > Đổi tên. Đặt tên cho tệp là translate.
6. Nhấp vào biểu tượng Thêm tệp add > HTML. Đặt tên cho tệp là sidebar.

7. Thay thế nội dung của mỗi tệp bằng đoạn mã tương ứng sau đây, sau đó nhấp vào biểu tượng Lưu .

   translate.gs

   docs/translate/translate.gs

   Xem trên GitHub

   /**
    * @OnlyCurrentDoc
    *
    * The above comment directs Apps Script to limit the scope of file
    * access for this add-on. It specifies that this add-on will only
    * attempt to read or modify the files in which the add-on is used,
    * and not all of the user's files. The authorization request message
    * presented to users will reflect this limited scope.
    */
   
   /**
    * Creates a menu entry in the Google Docs UI when the document is opened.
    * This method is only used by the regular add-on, and is never called by
    * the mobile add-on version.
    *
    * @param {object} e The event parameter for a simple onOpen trigger. To
    *     determine which authorization mode (ScriptApp.AuthMode) the trigger is
    *     running in, inspect e.authMode.
    */
   function onOpen(e) {
     DocumentApp.getUi()
       .createAddonMenu()
       .addItem("Start", "showSidebar")
       .addToUi();
   }
   
   /**
    * Runs when the add-on is installed.
    * This method is only used by the regular add-on, and is never called by
    * the mobile add-on version.
    *
    * @param {object} e The event parameter for a simple onInstall trigger. To
    *     determine which authorization mode (ScriptApp.AuthMode) the trigger is
    *     running in, inspect e.authMode. (In practice, onInstall triggers always
    *     run in AuthMode.FULL, but onOpen triggers may be AuthMode.LIMITED or
    *     AuthMode.NONE.)
    */
   function onInstall(e) {
     onOpen(e);
   }
   
   /**
    * Opens a sidebar in the document containing the add-on's user interface.
    * This method is only used by the regular add-on, and is never called by
    * the mobile add-on version.
    */
   function showSidebar() {
     const ui =
       HtmlService.createHtmlOutputFromFile("sidebar").setTitle("Translate");
     DocumentApp.getUi().showSidebar(ui);
   }
   
   /**
    * Gets the text the user has selected. If there is no selection,
    * this function displays an error message.
    *
    * @return {Array.<string>} The selected text.
    */
   function getSelectedText() {
     const selection = DocumentApp.getActiveDocument().getSelection();
     const text = [];
     if (selection) {
       const elements = selection.getSelectedElements();
       for (let i = 0; i < elements.length; ++i) {
         if (elements[i].isPartial()) {
           const element = elements[i].getElement().asText();
           const startIndex = elements[i].getStartOffset();
           const endIndex = elements[i].getEndOffsetInclusive();
   
           text.push(element.getText().substring(startIndex, endIndex + 1));
         } else {
           const element = elements[i].getElement();
           // Only translate elements that can be edited as text; skip images and
           // other non-text elements.
           if (element.editAsText) {
             const elementText = element.asText().getText();
             // This check is necessary to exclude images, which return a blank
             // text element.
             if (elementText) {
               text.push(elementText);
             }
           }
         }
       }
     }
     if (!text.length) throw new Error("Please select some text.");
     return text;
   }
   
   /**
    * Gets the stored user preferences for the origin and destination languages,
    * if they exist.
    * This method is only used by the regular add-on, and is never called by
    * the mobile add-on version.
    *
    * @return {Object} The user's origin and destination language preferences, if
    *     they exist.
    */
   function getPreferences() {
     const userProperties = PropertiesService.getUserProperties();
     return {
       originLang: userProperties.getProperty("originLang"),
       destLang: userProperties.getProperty("destLang"),
     };
   }
   
   /**
    * Gets the user-selected text and translates it from the origin language to the
    * destination language. The languages are notated by their two-letter short
    * form. For example, English is 'en', and Spanish is 'es'. The origin language
    * may be specified as an empty string to indicate that Google Translate should
    * auto-detect the language.
    *
    * @param {string} origin The two-letter short form for the origin language.
    * @param {string} dest The two-letter short form for the destination language.
    * @param {boolean} savePrefs Whether to save the origin and destination
    *     language preferences.
    * @return {Object} Object containing the original text and the result of the
    *     translation.
    */
   function getTextAndTranslation(origin, dest, savePrefs) {
     if (savePrefs) {
       PropertiesService.getUserProperties()
         .setProperty("originLang", origin)
         .setProperty("destLang", dest);
     }
     const text = getSelectedText().join("\n");
     return {
       text: text,
       translation: translateText(text, origin, dest),
     };
   }
   
   /**
    * Replaces the text of the current selection with the provided text, or
    * inserts text at the current cursor location. (There will always be either
    * a selection or a cursor.) If multiple elements are selected, only inserts the
    * translated text in the first element that can contain text and removes the
    * other elements.
    *
    * @param {string} newText The text with which to replace the current selection.
    */
   function insertText(newText) {
     const selection = DocumentApp.getActiveDocument().getSelection();
     if (selection) {
       let replaced = false;
       const elements = selection.getSelectedElements();
       if (
         elements.length === 1 &&
         elements[0].getElement().getType() ===
           DocumentApp.ElementType.INLINE_IMAGE
       ) {
         throw new Error("Can't insert text into an image.");
       }
       for (let i = 0; i < elements.length; ++i) {
         if (elements[i].isPartial()) {
           const element = elements[i].getElement().asText();
           const startIndex = elements[i].getStartOffset();
           const endIndex = elements[i].getEndOffsetInclusive();
           element.deleteText(startIndex, endIndex);
           if (!replaced) {
             element.insertText(startIndex, newText);
             replaced = true;
           } else {
             // This block handles a selection that ends with a partial element. We
             // want to copy this partial text to the previous element so we don't
             // have a line-break before the last partial.
             const parent = element.getParent();
             const remainingText = element.getText().substring(endIndex + 1);
             parent.getPreviousSibling().asText().appendText(remainingText);
             // We cannot remove the last paragraph of a doc. If this is the case,
             // just remove the text within the last paragraph instead.
             if (parent.getNextSibling()) {
               parent.removeFromParent();
             } else {
               element.removeFromParent();
             }
           }
         } else {
           const element = elements[i].getElement();
           if (!replaced && element.editAsText) {
             // Only translate elements that can be edited as text, removing other
             // elements.
             element.clear();
             element.asText().setText(newText);
             replaced = true;
           } else {
             // We cannot remove the last paragraph of a doc. If this is the case,
             // just clear the element.
             if (element.getNextSibling()) {
               element.removeFromParent();
             } else {
               element.clear();
             }
           }
         }
       }
     } else {
       const cursor = DocumentApp.getActiveDocument().getCursor();
       const surroundingText = cursor.getSurroundingText().getText();
       const surroundingTextOffset = cursor.getSurroundingTextOffset();
   
       // If the cursor follows or preceds a non-space character, insert a space
       // between the character and the translation. Otherwise, just insert the
       // translation.
       let textToInsert = newText;
       if (surroundingText) {
         if (surroundingTextOffset > 0) {
           if (surroundingText.charAt(surroundingTextOffset - 1) !== " ") {
             textToInsert = ` ${textToInsert}`;
           }
         }
         if (surroundingTextOffset < surroundingText.length) {
           if (surroundingText.charAt(surroundingTextOffset) !== " ") {
             textToInsert += " ";
           }
         }
       }
       cursor.insertText(textToInsert);
     }
   }
   
   /**
    * Given text, translate it from the origin language to the destination
    * language. The languages are notated by their two-letter short form. For
    * example, English is 'en', and Spanish is 'es'. The origin language may be
    * specified as an empty string to indicate that Google Translate should
    * auto-detect the language.
    *
    * @param {string} text text to translate.
    * @param {string} origin The two-letter short form for the origin language.
    * @param {string} dest The two-letter short form for the destination language.
    * @return {string} The result of the translation, or the original text if
    *     origin and dest languages are the same.
    */
   function translateText(text, origin, dest) {
     if (origin === dest) return text;
     return LanguageApp.translate(text, origin, dest);
   }

   sidebar.html

   docs/translate/sidebar.html

   Xem trên GitHub

   <!DOCTYPE html>
   <html>
   <head>
     <base target="_top">
     <link rel="stylesheet" href="https://ssl.gstatic.com/docs/script/css/add-ons1.css">
     <!-- The CSS package above applies Google styling to buttons and other elements. -->
   
     <style>
       .branding-below {
         bottom: 56px;
         top: 0;
       }
       .branding-text {
         left: 7px;
         position: relative;
         top: 3px;
       }
       .col-contain {
         overflow: hidden;
       }
       .col-one {
         float: left;
         width: 50%;
       }
       .logo {
         vertical-align: middle;
       }
       .radio-spacer {
         height: 20px;
       }
       .width-100 {
         width: 100%;
       }
     </style>
     <title></title>
   </head>
   <body>
   <div class="sidebar branding-below">
     <form>
       <div class="block col-contain">
         <div class="col-one">
           <b>Selected text</b>
           <div>
             <input type="radio" name="origin" id="radio-origin-auto" value="" checked="checked">
             <label for="radio-origin-auto">Auto-detect</label>
           </div>
           <div>
             <input type="radio" name="origin" id="radio-origin-en" value="en">
             <label for="radio-origin-en">English</label>
           </div>
           <div>
             <input type="radio" name="origin" id="radio-origin-fr" value="fr">
             <label for="radio-origin-fr">French</label>
           </div>
           <div>
             <input type="radio" name="origin" id="radio-origin-de" value="de">
             <label for="radio-origin-de">German</label>
           </div>
           <div>
             <input type="radio" name="origin" id="radio-origin-ja" value="ja">
             <label for="radio-origin-ja">Japanese</label>
           </div>
           <div>
             <input type="radio" name="origin" id="radio-origin-es" value="es">
             <label for="radio-origin-es">Spanish</label>
           </div>
         </div>
         <div>
           <b>Translate into</b>
           <div class="radio-spacer">
           </div>
           <div>
             <input type="radio" name="dest" id="radio-dest-en" value="en">
             <label for="radio-dest-en">English</label>
           </div>
           <div>
             <input type="radio" name="dest" id="radio-dest-fr" value="fr">
             <label for="radio-dest-fr">French</label>
           </div>
           <div>
             <input type="radio" name="dest" id="radio-dest-de" value="de">
             <label for="radio-dest-de">German</label>
           </div>
           <div>
             <input type="radio" name="dest" id="radio-dest-ja" value="ja" checked="checked">
             <label for="radio-dest-ja">Japanese</label>
           </div>
           <div>
             <input type="radio" name="dest" id="radio-dest-es" value="es">
             <label for="radio-dest-es">Spanish</label>
           </div>
         </div>
       </div>
       <div class="block form-group">
         <label for="translated-text"><b>Translation</b></label>
         <textarea class="width-100" id="translated-text" rows="10"></textarea>
       </div>
       <div class="block">
         <input type="checkbox" id="save-prefs">
         <label for="save-prefs">Use these languages by default</label>
       </div>
       <div class="block" id="button-bar">
         <button class="blue" id="run-translation">Translate</button>
         <button id="insert-text">Insert</button>
       </div>
     </form>
   </div>
   
   <div class="sidebar bottom">
     <img alt="Add-on logo" class="logo" src="https://www.gstatic.com/images/branding/product/1x/translate_48dp.png" width="27" height="27">
     <span class="gray branding-text">Translate sample by Google</span>
   </div>
   
   <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
   <script>
     /**
      * On document load, assign click handlers to each button and try to load the
      * user's origin and destination language preferences if previously set.
      */
     $(function() {
       $('#run-translation').click(runTranslation);
       $('#insert-text').click(insertText);
       google.script.run.withSuccessHandler(loadPreferences)
               .withFailureHandler(showError).getPreferences();
     });
   
     /**
      * Callback function that populates the origin and destination selection
      * boxes with user preferences from the server.
      *
      * @param {Object} languagePrefs The saved origin and destination languages.
      */
     function loadPreferences(languagePrefs) {
       $('input:radio[name="origin"]')
               .filter('[value=' + languagePrefs.originLang + ']')
               .attr('checked', true);
       $('input:radio[name="dest"]')
               .filter('[value=' + languagePrefs.destLang + ']')
               .attr('checked', true);
     }
   
     /**
      * Runs a server-side function to translate the user-selected text and update
      * the sidebar UI with the resulting translation.
      */
     function runTranslation() {
       this.disabled = true;
       $('#error').remove();
       const origin = $('input[name=origin]:checked').val();
       const dest = $('input[name=dest]:checked').val();
       const savePrefs = $('#save-prefs').is(':checked');
       google.script.run
               .withSuccessHandler(
                       function(textAndTranslation, element) {
                         $('#translated-text').val(textAndTranslation.translation);
                         element.disabled = false;
                       })
               .withFailureHandler(
                       function(msg, element) {
                         showError(msg, $('#button-bar'));
                         element.disabled = false;
                       })
               .withUserObject(this)
               .getTextAndTranslation(origin, dest, savePrefs);
     }
   
     /**
      * Runs a server-side function to insert the translated text into the document
      * at the user's cursor or selection.
      */
     function insertText() {
       this.disabled = true;
       $('#error').remove();
       google.script.run
               .withSuccessHandler(
                       function(returnSuccess, element) {
                         element.disabled = false;
                       })
               .withFailureHandler(
                       function(msg, element) {
                         showError(msg, $('#button-bar'));
                         element.disabled = false;
                       })
               .withUserObject(this)
               .insertText($('#translated-text').val());
     }
   
     /**
      * Inserts a div that contains an error message after a given element.
      *
      * @param {string} msg The error message to display.
      * @param {DOMElement} element The element after which to display the error.
      */
     function showError(msg, element) {
       const div = $('<div id="error" class="error">' + msg + '</div>');
       $(element).after(div);
     }
   </script>
   </body>
   </html>

Chạy tập lệnh

1. Trong tài liệu Tài liệu, hãy tải lại trang.
2. Nhấp vào Tiện ích mở rộng > Translate Docs > Bắt đầu.
3. Khi được nhắc, hãy cho phép tiện ích bổ sung chạy. Sau khi được cho phép, tiện ích bổ sung sẽ khởi động lại.
4. Nhập một đoạn văn bản vào tài liệu rồi chọn đoạn văn bản đó.
5. Trong tiện ích bổ sung, hãy nhấp vào Dịch. Để thay thế văn bản trong tài liệu, hãy nhấp vào Chèn.

Các bước tiếp theo

• Mở rộng Tài liệu bằng Apps Script
• Tài liệu tham khảo về dịch vụ Tài liệu