feat(boards): xpython 文本分类下添加 字节串

boards/default_src/python/blocks/text.js

@@ -65,6 +65,37 @@ export const text_textarea = {
     }
 };
 
+export const text_bytes = {
+    /**
+     * Block for text value.
+     * @this Blockly.Block
+     */
+    init: function () {
+        this.setColour(TEXTS_HUE);
+        this.appendDummyInput()
+            .appendField(Blockly.Msg.MIXLY_TEXT_BYTES)
+            .appendField(this.newQuote_(true))
+            .appendField(new Blockly.FieldTextInput(''), 'TEXT')
+            .appendField(this.newQuote_(false));
+        this.setOutput(true, String);
+        this.setTooltip(Blockly.Msg.TEXT_TEXT_TOOLTIP);
+    },
+    /**
+     * Create an image of an open or closed quote.
+     * @param {boolean} open True if open quote, false if closed.
+     * @return {!Blockly.FieldImage} The field image of the quote.
+     * @private
+     */
+    newQuote_: function (open) {
+        if (open == this.RTL) {
+            var file = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAKCAQAAAAqJXdxAAAAqUlEQVQI1z3KvUpCcRiA8ef9E4JNHhI0aFEacm1o0BsI0Slx8wa8gLauoDnoBhq7DcfWhggONDmJJgqCPA7neJ7p934EOOKOnM8Q7PDElo/4x4lFb2DmuUjcUzS3URnGib9qaPNbuXvBO3sGPHJDRG6fGVdMSeWDP2q99FQdFrz26Gu5Tq7dFMzUvbXy8KXeAj57cOklgA+u1B5AoslLtGIHQMaCVnwDnADZIFIrXsoXrgAAAABJRU5ErkJggg==';
+        } else {
+            var file = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAKCAQAAAAqJXdxAAAAn0lEQVQI1z3OMa5BURSF4f/cQhAKjUQhuQmFNwGJEUi0RKN5rU7FHKhpjEH3TEMtkdBSCY1EIv8r7nFX9e29V7EBAOvu7RPjwmWGH/VuF8CyN9/OAdvqIXYLvtRaNjx9mMTDyo+NjAN1HNcl9ZQ5oQMM3dgDUqDo1l8DzvwmtZN7mnD+PkmLa+4mhrxVA9fRowBWmVBhFy5gYEjKMfz9AylsaRRgGzvZAAAAAElFTkSuQmCC';
+        }
+        return new Blockly.FieldImage(file, 12, 12, '"');
+    }
+};
+
 Blockly.FieldTextInput.char_validator = function (text) {
     if (text.length > 1) {
         if (text.charAt(0) === "\\") {