初始化提交
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王立帮
248
common/js/py2block_editor.js
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248
common/js/py2block_editor.js
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function Py2blockEditor(py2block_conveter, ace_editor){
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this.convert = py2block_conveter;
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this.editor = ace_editor;
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this.silentText = false;
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this.silentBlock = false;
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this.lastCodeSnapshot = "";
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this.fromCode = false;
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}
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Py2blockEditor.prototype.isFuncStartLine = function(line){
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return /^ *?def *?.*?\(.*?\): *?$/.test(line);
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}
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Py2blockEditor.prototype.isEmptyNewLine = function(line){
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return /^ +?$/.test(line) || line == "";
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}
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Py2blockEditor.prototype.getIndentOfLine = function(line){
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for(var i = 0 ; i < line.length ; i ++){
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if(line[i] != " "){
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return i;
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}
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}
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return 0;
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}
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// 换行和tab的处理；
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Py2blockEditor.prototype.formatLine = function (python_code) {
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python_code = python_code.replace("\r\n", "\n")
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.replace("\r", "\n")
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.replace("\t", " ");
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return python_code;
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}
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// 格式化模块方法的调用形式. 如 Pin->machine.Pin
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Py2blockEditor.prototype.formatModule = function (python_code) {
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var keylist = py2block_config.formatModuleKeyL;
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var modulelist = py2block_config.formatModuleL;
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for (var i = 0; i < keylist.length; i++) {
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for (var j = 0; j < keylist[i].length; j++) {
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var reg = new RegExp(modulelist[i] + "." + keylist[i][j], "g");
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python_code = python_code.replace(reg, keylist[i][j]);
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var reg = new RegExp("(" + "\\b"+keylist[i][j] + "\\(" + "|" +"\\b"+ keylist[i][j] + "\\." + ")", "g");
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python_code = python_code.replace(reg, function(match) {
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return modulelist[i] + "." + match;
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});
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}
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}
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return python_code;
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}
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//为函数定义前后增加空行
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Py2blockEditor.prototype.addNewLines = function(python_code){
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var lines = python_code.split("\n");
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var isFirstLine = true;
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var isNewLine = false;
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var isFuncDefScope = false;
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var indent = 0;
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var new_python_code = "";
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var newLine = "";
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//遍历每行
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for(var i = 0 ; i < lines.length ; i ++){
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var line = lines[i];
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//函数定义的开始行（def XXX()）
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if(this.isFuncStartLine(line)){
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isFuncDefScope = true;
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indent = this.getIndentOfLine(line);
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if(!isFirstLine && !isNewLine){
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line = "\n" + line;
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}
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}else if(isFuncDefScope && this.getIndentOfLine(line) <= indent){//函数定义结束后的第一行
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if(!this.isEmptyNewLine(line)){
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line = "\n" + line;
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}else {
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isFuncDefScope = false;
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}
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}
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//是否是空行
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if(this.isEmptyNewLine(line)){
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isNewLine = true;
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}else{
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isNewLine = false;
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}
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new_python_code += line + "\n";
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isFirstLine = false;
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}
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return new_python_code;
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}
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Py2blockEditor.prototype.encodeChinese = function(code){
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return code.replace(/[\u4e00-\u9fa5]+/g, function (s) {
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return encodeURIComponent(s).replace(/%/g, "_");
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})
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}
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Py2blockEditor.prototype.decodeChinese = function(code){
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return code.replace(/(_[0-9A-F]{2}_[0-9A-F]{2}_[0-9A-F]{2})+/g, function (s) {
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return decodeURIComponent(s.replace(/_/g, '%'));
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});
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}
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Py2blockEditor.prototype.setBlocks = function(python_code){
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var xml_code = "";
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py2block_config.reset();
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python_code = this.formatLine(python_code);
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python_code = this.formatModule(python_code);
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python_code = this.addNewLines(python_code);
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if (python_code !== '' && python_code !== undefined && python_code.trim().charAt(0) !== '<') {
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var result = this.convert.convertSource(python_code);
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xml_code = this.decodeChinese(result.xml);
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if (result.error !== null) {
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console.log(result.error);
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} else {
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}
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}
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var error_code = this.convert.convertSourceToCodeBlock(python_code);
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var errorXml = Blockly.utils.xml.textToDom(error_code);
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if (python_code == '' || python_code == undefined || python_code.trim() == '') {
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Mixly.Editor.blockEditor.clear();
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} else if (xml_code !== '' && xml_code !== undefined) {
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var blocklyXml = Blockly.utils.xml.textToDom(xml_code);
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try {
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this.setBlocksFromXml(blocklyXml);
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} catch (e) {
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console.error(e);
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this.setBlocksFromXml(errorXml);
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}
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} else {
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this.setBlocksFromXml(errorXml);
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}
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}
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Py2blockEditor.prototype.setBlocksFromXml = function(xml){
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Mixly.Editor.blockEditor.clear();
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Blockly.Xml.domToWorkspace(xml, Mixly.Editor.blockEditor);
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Mixly.Editor.blockEditor.scrollCenter();
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}
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Py2blockEditor.prototype.gotoEditorEnd = function(){
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var row = this.editor.session.getLength() - 1;
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for(var rowid = row; rowid >= 0; rowid --) {
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var column = this.editor.session.getLine(rowid).length; // or simply Infinity
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if(column !== 0) {
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this.editor.gotoLine(rowid + 1, column);
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this.editor.focus();
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break;
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}
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}
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}
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Py2blockEditor.prototype.getFocus = function(){
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this.editor.focus();
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}
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Py2blockEditor.prototype.updateText = function(){
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if(!this.silentText) {
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this.silentBlock = true;
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this.setBlocks(this.encodeChinese(this.editor.getValue()));
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var py2blockEditor = this;
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setTimeout(function(){
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py2blockEditor.silentBlock = false;
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}, 50);
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}
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}
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Py2blockEditor.prototype.updateBlock = function(){
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if(this.fromCode) {
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this.fromCode = false;
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var encodeCode = this.encodeChinese(this.editor.getValue());
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this.setBlocks(encodeCode);
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}
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}
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Blockly.Xml.domToWorkspaceDestructive = function(xml, workspace, errorXml) {
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if (xml instanceof Blockly.Workspace) {
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var swap = xml;
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xml = workspace;
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workspace = swap;
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console.warn('Deprecated call to Blockly.Xml.domToWorkspace, ' +
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'swap the arguments.');
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}
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var width; // Not used in LTR.
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if (workspace.RTL) {
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width = workspace.getWidth();
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}
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Blockly.utils.dom.startTextWidthCache();
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// Safari 7.1.3 is known to provide node lists with extra references to
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// children beyond the lists' length. Trust the length, do not use the
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// looping pattern of checking the index for an object.
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var childCount = xml.childNodes.length;
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var existingGroup = Blockly.Events.getGroup();
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if (!existingGroup) {
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Blockly.Events.setGroup(true);
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}
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Blockly.Events.disable();
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var blockLHeight = [];
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while (workspace.topBlocks_.length) {
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workspace.topBlocks_[0].dispose();
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//blockLHeight.push(workspace.topBlocks_[0].getHeightWidth()['height']);
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}
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//workspace.variableList.length = 0;
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Blockly.Events.enable();
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// Disable workspace resizes as an optimization.
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if (workspace.setResizesEnabled) {
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workspace.setResizesEnabled(false);
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}
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var currY = 10;
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for (var i = 0; i < childCount; i++) {
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var xmlChild = xml.childNodes[i];
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var name = xmlChild.nodeName.toLowerCase();
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if (name == 'block' ||
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(name == 'shadow' && !Blockly.Events.recordUndo)) {
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// Allow top-level shadow blocks if recordUndo is disabled since
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// that means an undo is in progress. Such a block is expected
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// to be moved to a nested destination in the next operation.
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var block = Blockly.Xml.domToBlock(xmlChild, workspace);
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var blockX = 0;
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var blockY = currY;
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currY = blockY + workspace.topBlocks_[i].getHeightWidth()['height'] + 50;
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if (!isNaN(blockX) && !isNaN(blockY)) {
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block.moveBy(workspace.RTL ? width - blockX : blockX, blockY);
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}
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} else if (name == 'shadow') {
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goog.asserts.fail('Shadow block cannot be a top-level block.');
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}
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}
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if (!existingGroup) {
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Blockly.Events.setGroup(false);
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}
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Blockly.utils.dom.stopTextWidthCache();
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//workspace.updateVariableList(false);
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// Re-enable workspace resizing.
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if (workspace.setResizesEnabled) {
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workspace.setResizesEnabled(true);
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}
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}
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