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https://github.com/google/blockly.git
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776 lines
27 KiB
JavaScript
776 lines
27 KiB
JavaScript
/**
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* @license
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* Visual Blocks Editor
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*
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* Copyright 2012 Google Inc.
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* https://developers.google.com/blockly/
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @fileoverview Procedure blocks for Blockly.
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* @author fraser@google.com (Neil Fraser)
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*/
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'use strict';
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goog.provide('Blockly.Blocks.procedures');
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goog.require('Blockly.Blocks');
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/**
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* Common HSV hue for all blocks in this category.
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*/
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Blockly.Blocks.procedures.HUE = 290;
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Blockly.Blocks['procedures_defnoreturn'] = {
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/**
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* Block for defining a procedure with no return value.
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* @this Blockly.Block
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*/
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init: function() {
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this.setHelpUrl(Blockly.Msg.PROCEDURES_DEFNORETURN_HELPURL);
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this.setColour(Blockly.Blocks.procedures.HUE);
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var nameField = new Blockly.FieldTextInput(
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Blockly.Msg.PROCEDURES_DEFNORETURN_PROCEDURE,
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Blockly.Procedures.rename);
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nameField.setSpellcheck(false);
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this.appendDummyInput()
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.appendField(Blockly.Msg.PROCEDURES_DEFNORETURN_TITLE)
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.appendField(nameField, 'NAME')
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.appendField('', 'PARAMS');
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this.setMutator(new Blockly.Mutator(['procedures_mutatorarg']));
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this.setTooltip(Blockly.Msg.PROCEDURES_DEFNORETURN_TOOLTIP);
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this.arguments_ = [];
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this.setStatements_(true);
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this.statementConnection_ = null;
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},
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/**
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* Initialization of the block has completed, clean up anything that may be
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* inconsistent as a result of the XML loading.
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* @this Blockly.Block
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*/
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validate: function () {
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var name = Blockly.Procedures.findLegalName(
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this.getFieldValue('NAME'), this);
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this.setFieldValue(name, 'NAME');
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},
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/**
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* Add or remove the statement block from this function definition.
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* @param {boolean} hasStatements True if a statement block is needed.
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* @this Blockly.Block
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*/
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setStatements_: function(hasStatements) {
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if (this.hasStatements_ === hasStatements) {
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return;
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}
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if (hasStatements) {
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this.appendStatementInput('STACK')
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.appendField(Blockly.Msg.PROCEDURES_DEFNORETURN_DO);
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if (this.getInput('RETURN')) {
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this.moveInputBefore('STACK', 'RETURN');
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}
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} else {
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this.removeInput('STACK', true);
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}
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this.hasStatements_ = hasStatements;
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},
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/**
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* Update the display of parameters for this procedure definition block.
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* Display a warning if there are duplicately named parameters.
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* @private
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* @this Blockly.Block
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*/
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updateParams_: function() {
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// Check for duplicated arguments.
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var badArg = false;
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var hash = {};
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for (var i = 0; i < this.arguments_.length; i++) {
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if (hash['arg_' + this.arguments_[i].toLowerCase()]) {
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badArg = true;
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break;
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}
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hash['arg_' + this.arguments_[i].toLowerCase()] = true;
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}
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if (badArg) {
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this.setWarningText(Blockly.Msg.PROCEDURES_DEF_DUPLICATE_WARNING);
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} else {
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this.setWarningText(null);
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}
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// Merge the arguments into a human-readable list.
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var paramString = '';
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if (this.arguments_.length) {
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paramString = Blockly.Msg.PROCEDURES_BEFORE_PARAMS +
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' ' + this.arguments_.join(', ');
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}
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this.setFieldValue(paramString, 'PARAMS');
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},
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/**
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* Create XML to represent the argument inputs.
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* @return {!Element} XML storage element.
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* @this Blockly.Block
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*/
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mutationToDom: function() {
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var container = document.createElement('mutation');
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for (var i = 0; i < this.arguments_.length; i++) {
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var parameter = document.createElement('arg');
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parameter.setAttribute('name', this.arguments_[i]);
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container.appendChild(parameter);
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}
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// Save whether the statement input is visible.
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if (!this.hasStatements_) {
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container.setAttribute('statements', 'false');
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}
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return container;
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},
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/**
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* Parse XML to restore the argument inputs.
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* @param {!Element} xmlElement XML storage element.
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* @this Blockly.Block
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*/
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domToMutation: function(xmlElement) {
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this.arguments_ = [];
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for (var i = 0, childNode; childNode = xmlElement.childNodes[i]; i++) {
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if (childNode.nodeName.toLowerCase() == 'arg') {
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this.arguments_.push(childNode.getAttribute('name'));
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}
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}
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this.updateParams_();
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// Show or hide the statement input.
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this.setStatements_(xmlElement.getAttribute('statements') !== 'false');
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},
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/**
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* Populate the mutator's dialog with this block's components.
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* @param {!Blockly.Workspace} workspace Mutator's workspace.
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* @return {!Blockly.Block} Root block in mutator.
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* @this Blockly.Block
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*/
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decompose: function(workspace) {
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var containerBlock = Blockly.Block.obtain(workspace,
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'procedures_mutatorcontainer');
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containerBlock.initSvg();
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// Check/uncheck the allow statement box.
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if (this.getInput('RETURN')) {
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containerBlock.setFieldValue(this.hasStatements_ ? 'TRUE' : 'FALSE',
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'STATEMENTS');
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} else {
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containerBlock.getInput('STATEMENT_INPUT').setVisible(false);
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}
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// Parameter list.
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var connection = containerBlock.getInput('STACK').connection;
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for (var i = 0; i < this.arguments_.length; i++) {
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var paramBlock = Blockly.Block.obtain(workspace, 'procedures_mutatorarg');
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paramBlock.initSvg();
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paramBlock.setFieldValue(this.arguments_[i], 'NAME');
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// Store the old location.
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paramBlock.oldLocation = i;
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connection.connect(paramBlock.previousConnection);
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connection = paramBlock.nextConnection;
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}
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// Initialize procedure's callers with blank IDs.
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Blockly.Procedures.mutateCallers(this.getFieldValue('NAME'),
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this.workspace, this.arguments_, null);
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return containerBlock;
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},
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/**
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* Reconfigure this block based on the mutator dialog's components.
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* @param {!Blockly.Block} containerBlock Root block in mutator.
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* @this Blockly.Block
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*/
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compose: function(containerBlock) {
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// Parameter list.
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this.arguments_ = [];
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this.paramIds_ = [];
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var paramBlock = containerBlock.getInputTargetBlock('STACK');
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while (paramBlock) {
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this.arguments_.push(paramBlock.getFieldValue('NAME'));
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this.paramIds_.push(paramBlock.id);
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paramBlock = paramBlock.nextConnection &&
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paramBlock.nextConnection.targetBlock();
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}
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this.updateParams_();
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Blockly.Procedures.mutateCallers(this.getFieldValue('NAME'),
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this.workspace, this.arguments_, this.paramIds_);
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// Show/hide the statement input.
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var hasStatements = containerBlock.getFieldValue('STATEMENTS');
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if (hasStatements !== null) {
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hasStatements = hasStatements == 'TRUE';
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if (this.hasStatements_ != hasStatements) {
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if (hasStatements) {
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this.setStatements_(true);
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// Restore the stack, if one was saved.
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var stackConnection = this.getInput('STACK').connection;
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if (stackConnection.targetConnection ||
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!this.statementConnection_ ||
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this.statementConnection_.targetConnection ||
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this.statementConnection_.sourceBlock_.workspace !=
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this.workspace) {
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// Block no longer exists or has been attached elsewhere.
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this.statementConnection_ = null;
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} else {
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stackConnection.connect(this.statementConnection_);
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}
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} else {
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// Save the stack, then disconnect it.
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var stackConnection = this.getInput('STACK').connection;
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this.statementConnection_ = stackConnection.targetConnection;
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if (this.statementConnection_) {
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var stackBlock = stackConnection.targetBlock();
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stackBlock.setParent(null);
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stackBlock.bumpNeighbours_();
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}
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this.setStatements_(false);
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}
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}
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}
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},
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/**
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* Dispose of any callers.
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* @this Blockly.Block
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*/
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dispose: function() {
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var name = this.getFieldValue('NAME');
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Blockly.Procedures.disposeCallers(name, this.workspace);
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// Call parent's destructor.
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this.constructor.prototype.dispose.apply(this, arguments);
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},
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/**
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* Return the signature of this procedure definition.
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* @return {!Array} Tuple containing three elements:
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* - the name of the defined procedure,
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* - a list of all its arguments,
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* - that it DOES NOT have a return value.
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* @this Blockly.Block
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*/
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getProcedureDef: function() {
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return [this.getFieldValue('NAME'), this.arguments_, false];
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},
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/**
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* Return all variables referenced by this block.
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* @return {!Array.<string>} List of variable names.
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* @this Blockly.Block
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*/
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getVars: function() {
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return this.arguments_;
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},
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/**
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* Notification that a variable is renaming.
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* If the name matches one of this block's variables, rename it.
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* @param {string} oldName Previous name of variable.
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* @param {string} newName Renamed variable.
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* @this Blockly.Block
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*/
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renameVar: function(oldName, newName) {
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var change = false;
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for (var i = 0; i < this.arguments_.length; i++) {
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if (Blockly.Names.equals(oldName, this.arguments_[i])) {
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this.arguments_[i] = newName;
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change = true;
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}
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}
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if (change) {
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this.updateParams_();
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// Update the mutator's variables if the mutator is open.
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if (this.mutator.isVisible()) {
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var blocks = this.mutator.workspace_.getAllBlocks();
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for (var i = 0, block; block = blocks[i]; i++) {
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if (block.type == 'procedures_mutatorarg' &&
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Blockly.Names.equals(oldName, block.getFieldValue('NAME'))) {
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block.setFieldValue(newName, 'NAME');
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}
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}
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}
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}
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},
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/**
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* Add custom menu options to this block's context menu.
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* @param {!Array} options List of menu options to add to.
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* @this Blockly.Block
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*/
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customContextMenu: function(options) {
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// Add option to create caller.
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var option = {enabled: true};
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var name = this.getFieldValue('NAME');
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option.text = Blockly.Msg.PROCEDURES_CREATE_DO.replace('%1', name);
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var xmlMutation = goog.dom.createDom('mutation');
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xmlMutation.setAttribute('name', name);
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for (var i = 0; i < this.arguments_.length; i++) {
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var xmlArg = goog.dom.createDom('arg');
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xmlArg.setAttribute('name', this.arguments_[i]);
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xmlMutation.appendChild(xmlArg);
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}
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var xmlBlock = goog.dom.createDom('block', null, xmlMutation);
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xmlBlock.setAttribute('type', this.callType_);
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option.callback = Blockly.ContextMenu.callbackFactory(this, xmlBlock);
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options.push(option);
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// Add options to create getters for each parameter.
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if (!this.isCollapsed()) {
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for (var i = 0; i < this.arguments_.length; i++) {
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var option = {enabled: true};
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var name = this.arguments_[i];
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option.text = Blockly.Msg.VARIABLES_SET_CREATE_GET.replace('%1', name);
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var xmlField = goog.dom.createDom('field', null, name);
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xmlField.setAttribute('name', 'VAR');
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var xmlBlock = goog.dom.createDom('block', null, xmlField);
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xmlBlock.setAttribute('type', 'variables_get');
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option.callback = Blockly.ContextMenu.callbackFactory(this, xmlBlock);
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options.push(option);
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}
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}
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},
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callType_: 'procedures_callnoreturn'
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};
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Blockly.Blocks['procedures_defreturn'] = {
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/**
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* Block for defining a procedure with a return value.
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* @this Blockly.Block
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*/
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init: function() {
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this.setHelpUrl(Blockly.Msg.PROCEDURES_DEFRETURN_HELPURL);
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this.setColour(Blockly.Blocks.procedures.HUE);
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var nameField = new Blockly.FieldTextInput(
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Blockly.Msg.PROCEDURES_DEFRETURN_PROCEDURE,
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Blockly.Procedures.rename);
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nameField.setSpellcheck(false);
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this.appendDummyInput()
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.appendField(Blockly.Msg.PROCEDURES_DEFRETURN_TITLE)
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.appendField(nameField, 'NAME')
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.appendField('', 'PARAMS');
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this.appendValueInput('RETURN')
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.setAlign(Blockly.ALIGN_RIGHT)
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.appendField(Blockly.Msg.PROCEDURES_DEFRETURN_RETURN);
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this.setMutator(new Blockly.Mutator(['procedures_mutatorarg']));
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this.setTooltip(Blockly.Msg.PROCEDURES_DEFRETURN_TOOLTIP);
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this.arguments_ = [];
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this.setStatements_(true);
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this.statementConnection_ = null;
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},
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setStatements_: Blockly.Blocks['procedures_defnoreturn'].setStatements_,
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validate: Blockly.Blocks['procedures_defnoreturn'].validate,
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updateParams_: Blockly.Blocks['procedures_defnoreturn'].updateParams_,
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mutationToDom: Blockly.Blocks['procedures_defnoreturn'].mutationToDom,
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domToMutation: Blockly.Blocks['procedures_defnoreturn'].domToMutation,
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decompose: Blockly.Blocks['procedures_defnoreturn'].decompose,
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compose: Blockly.Blocks['procedures_defnoreturn'].compose,
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dispose: Blockly.Blocks['procedures_defnoreturn'].dispose,
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/**
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* Return the signature of this procedure definition.
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* @return {!Array} Tuple containing three elements:
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* - the name of the defined procedure,
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* - a list of all its arguments,
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* - that it DOES have a return value.
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* @this Blockly.Block
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*/
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getProcedureDef: function() {
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return [this.getFieldValue('NAME'), this.arguments_, true];
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},
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getVars: Blockly.Blocks['procedures_defnoreturn'].getVars,
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renameVar: Blockly.Blocks['procedures_defnoreturn'].renameVar,
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customContextMenu: Blockly.Blocks['procedures_defnoreturn'].customContextMenu,
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callType_: 'procedures_callreturn'
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};
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Blockly.Blocks['procedures_mutatorcontainer'] = {
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/**
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* Mutator block for procedure container.
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* @this Blockly.Block
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*/
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init: function() {
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this.setColour(Blockly.Blocks.procedures.HUE);
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this.appendDummyInput()
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.appendField(Blockly.Msg.PROCEDURES_MUTATORCONTAINER_TITLE);
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this.appendStatementInput('STACK');
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this.appendDummyInput('STATEMENT_INPUT')
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.appendField(Blockly.Msg.PROCEDURES_ALLOW_STATEMENTS)
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.appendField(new Blockly.FieldCheckbox('TRUE'), 'STATEMENTS');
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this.setTooltip(Blockly.Msg.PROCEDURES_MUTATORCONTAINER_TOOLTIP);
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this.contextMenu = false;
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}
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};
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Blockly.Blocks['procedures_mutatorarg'] = {
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/**
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* Mutator block for procedure argument.
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* @this Blockly.Block
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*/
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init: function() {
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this.setColour(Blockly.Blocks.procedures.HUE);
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this.appendDummyInput()
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.appendField(Blockly.Msg.PROCEDURES_MUTATORARG_TITLE)
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.appendField(new Blockly.FieldTextInput('x', this.validator_), 'NAME');
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this.setPreviousStatement(true);
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this.setNextStatement(true);
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this.setTooltip(Blockly.Msg.PROCEDURES_MUTATORARG_TOOLTIP);
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this.contextMenu = false;
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},
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/**
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* Obtain a valid name for the procedure.
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* Merge runs of whitespace. Strip leading and trailing whitespace.
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* Beyond this, all names are legal.
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* @param {string} newVar User-supplied name.
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* @return {?string} Valid name, or null if a name was not specified.
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* @private
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* @this Blockly.Block
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*/
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validator_: function(newVar) {
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newVar = newVar.replace(/[\s\xa0]+/g, ' ').replace(/^ | $/g, '');
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return newVar || null;
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}
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};
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Blockly.Blocks['procedures_callnoreturn'] = {
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/**
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* Block for calling a procedure with no return value.
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* @this Blockly.Block
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*/
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init: function() {
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this.setHelpUrl(Blockly.Msg.PROCEDURES_CALLNORETURN_HELPURL);
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this.setColour(Blockly.Blocks.procedures.HUE);
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this.appendDummyInput('TOPROW')
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.appendField(Blockly.Msg.PROCEDURES_CALLNORETURN_CALL)
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.appendField('', 'NAME');
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this.setPreviousStatement(true);
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this.setNextStatement(true);
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// Tooltip is set in domToMutation.
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this.arguments_ = [];
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this.quarkConnections_ = {};
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this.quarkArguments_ = null;
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},
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/**
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* Returns the name of the procedure this block calls.
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* @return {string} Procedure name.
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* @this Blockly.Block
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*/
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getProcedureCall: function() {
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// The NAME field is guaranteed to exist, null will never be returned.
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return /** @type {string} */ (this.getFieldValue('NAME'));
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},
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/**
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* Notification that a procedure is renaming.
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* If the name matches this block's procedure, rename it.
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* @param {string} oldName Previous name of procedure.
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* @param {string} newName Renamed procedure.
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* @this Blockly.Block
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*/
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renameProcedure: function(oldName, newName) {
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if (Blockly.Names.equals(oldName, this.getProcedureCall())) {
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this.setFieldValue(newName, 'NAME');
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this.setTooltip(
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(this.outputConnection ? Blockly.Msg.PROCEDURES_CALLRETURN_TOOLTIP :
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Blockly.Msg.PROCEDURES_CALLNORETURN_TOOLTIP)
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.replace('%1', newName));
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}
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},
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/**
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* Notification that the procedure's parameters have changed.
|
|
* @param {!Array.<string>} paramNames New param names, e.g. ['x', 'y', 'z'].
|
|
* @param {!Array.<string>} paramIds IDs of params (consistent for each
|
|
* parameter through the life of a mutator, regardless of param renaming),
|
|
* e.g. ['piua', 'f8b_', 'oi.o'].
|
|
* @this Blockly.Block
|
|
*/
|
|
setProcedureParameters: function(paramNames, paramIds) {
|
|
// Data structures:
|
|
// this.arguments = ['x', 'y']
|
|
// Existing param names.
|
|
// this.quarkConnections_ {piua: null, f8b_: Blockly.Connection}
|
|
// Look-up of paramIds to connections plugged into the call block.
|
|
// this.quarkArguments_ = ['piua', 'f8b_']
|
|
// Existing param IDs.
|
|
// Note that quarkConnections_ may include IDs that no longer exist, but
|
|
// which might reappear if a param is reattached in the mutator.
|
|
if (!paramIds) {
|
|
// Reset the quarks (a mutator is about to open).
|
|
this.quarkConnections_ = {};
|
|
this.quarkArguments_ = null;
|
|
return;
|
|
}
|
|
if (goog.array.equals(this.arguments_, paramNames)) {
|
|
// No change.
|
|
this.quarkArguments_ = paramIds;
|
|
return;
|
|
}
|
|
this.setCollapsed(false);
|
|
if (paramIds.length != paramNames.length) {
|
|
throw 'Error: paramNames and paramIds must be the same length.';
|
|
}
|
|
if (!this.quarkArguments_) {
|
|
// Initialize tracking for this block.
|
|
this.quarkConnections_ = {};
|
|
if (paramNames.join('\n') == this.arguments_.join('\n')) {
|
|
// No change to the parameters, allow quarkConnections_ to be
|
|
// populated with the existing connections.
|
|
this.quarkArguments_ = paramIds;
|
|
} else {
|
|
this.quarkArguments_ = [];
|
|
}
|
|
}
|
|
// Switch off rendering while the block is rebuilt.
|
|
var savedRendered = this.rendered;
|
|
this.rendered = false;
|
|
// Update the quarkConnections_ with existing connections.
|
|
for (var i = this.arguments_.length - 1; i >= 0; i--) {
|
|
var input = this.getInput('ARG' + i);
|
|
if (input) {
|
|
var connection = input.connection.targetConnection;
|
|
this.quarkConnections_[this.quarkArguments_[i]] = connection;
|
|
// Disconnect all argument blocks and remove all inputs.
|
|
this.removeInput('ARG' + i);
|
|
}
|
|
}
|
|
// Rebuild the block's arguments.
|
|
this.arguments_ = [].concat(paramNames);
|
|
this.renderArgs_();
|
|
this.quarkArguments_ = paramIds;
|
|
// Reconnect any child blocks.
|
|
if (this.quarkArguments_) {
|
|
for (var i = 0; i < this.arguments_.length; i++) {
|
|
var input = this.getInput('ARG' + i);
|
|
var quarkName = this.quarkArguments_[i];
|
|
if (quarkName in this.quarkConnections_) {
|
|
var connection = this.quarkConnections_[quarkName];
|
|
if (!connection || connection.targetConnection ||
|
|
connection.sourceBlock_.workspace != this.workspace) {
|
|
// Block no longer exists or has been attached elsewhere.
|
|
delete this.quarkConnections_[quarkName];
|
|
} else {
|
|
input.connection.connect(connection);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// Restore rendering and show the changes.
|
|
this.rendered = savedRendered;
|
|
if (this.rendered) {
|
|
this.render();
|
|
}
|
|
},
|
|
/**
|
|
* Render the arguments.
|
|
* @this Blockly.Block
|
|
* @private
|
|
*/
|
|
renderArgs_: function() {
|
|
for (var i = 0; i < this.arguments_.length; i++) {
|
|
var input = this.appendValueInput('ARG' + i)
|
|
.setAlign(Blockly.ALIGN_RIGHT)
|
|
.appendField(this.arguments_[i]);
|
|
input.init();
|
|
}
|
|
// Add 'with:' if there are parameters.
|
|
var input = this.getInput('TOPROW');
|
|
if (input) {
|
|
if (this.arguments_.length) {
|
|
if (!this.getField('WITH')) {
|
|
input.appendField(Blockly.Msg.PROCEDURES_CALL_BEFORE_PARAMS, 'WITH');
|
|
input.init();
|
|
}
|
|
} else {
|
|
if (this.getField('WITH')) {
|
|
input.removeField('WITH');
|
|
}
|
|
}
|
|
}
|
|
},
|
|
/**
|
|
* Create XML to represent the (non-editable) name and arguments.
|
|
* @return {!Element} XML storage element.
|
|
* @this Blockly.Block
|
|
*/
|
|
mutationToDom: function() {
|
|
var container = document.createElement('mutation');
|
|
container.setAttribute('name', this.getProcedureCall());
|
|
for (var i = 0; i < this.arguments_.length; i++) {
|
|
var parameter = document.createElement('arg');
|
|
parameter.setAttribute('name', this.arguments_[i]);
|
|
container.appendChild(parameter);
|
|
}
|
|
return container;
|
|
},
|
|
/**
|
|
* Parse XML to restore the (non-editable) name and parameters.
|
|
* @param {!Element} xmlElement XML storage element.
|
|
* @this Blockly.Block
|
|
*/
|
|
domToMutation: function(xmlElement) {
|
|
var name = xmlElement.getAttribute('name');
|
|
this.setFieldValue(name, 'NAME');
|
|
this.setTooltip(
|
|
(this.outputConnection ? Blockly.Msg.PROCEDURES_CALLRETURN_TOOLTIP :
|
|
Blockly.Msg.PROCEDURES_CALLNORETURN_TOOLTIP).replace('%1', name));
|
|
var def = Blockly.Procedures.getDefinition(name, this.workspace);
|
|
if (def && def.mutator && def.mutator.isVisible()) {
|
|
// Initialize caller with the mutator's IDs.
|
|
this.setProcedureParameters(def.arguments_, def.paramIds_);
|
|
} else {
|
|
var args = [];
|
|
for (var i = 0, childNode; childNode = xmlElement.childNodes[i]; i++) {
|
|
if (childNode.nodeName.toLowerCase() == 'arg') {
|
|
args.push(childNode.getAttribute('name'));
|
|
}
|
|
}
|
|
// For the second argument (paramIds) use the arguments list as a dummy
|
|
// list.
|
|
this.setProcedureParameters(args, args);
|
|
}
|
|
},
|
|
/**
|
|
* Notification that a variable is renaming.
|
|
* If the name matches one of this block's variables, rename it.
|
|
* @param {string} oldName Previous name of variable.
|
|
* @param {string} newName Renamed variable.
|
|
* @this Blockly.Block
|
|
*/
|
|
renameVar: function(oldName, newName) {
|
|
for (var i = 0; i < this.arguments_.length; i++) {
|
|
if (Blockly.Names.equals(oldName, this.arguments_[i])) {
|
|
this.arguments_[i] = newName;
|
|
this.getInput('ARG' + i).fieldRow[0].setText(newName);
|
|
}
|
|
}
|
|
},
|
|
/**
|
|
* Add menu option to find the definition block for this call.
|
|
* @param {!Array} options List of menu options to add to.
|
|
* @this Blockly.Block
|
|
*/
|
|
customContextMenu: function(options) {
|
|
var option = {enabled: true};
|
|
option.text = Blockly.Msg.PROCEDURES_HIGHLIGHT_DEF;
|
|
var name = this.getProcedureCall();
|
|
var workspace = this.workspace;
|
|
option.callback = function() {
|
|
var def = Blockly.Procedures.getDefinition(name, workspace);
|
|
def && def.select();
|
|
};
|
|
options.push(option);
|
|
}
|
|
};
|
|
|
|
Blockly.Blocks['procedures_callreturn'] = {
|
|
/**
|
|
* Block for calling a procedure with a return value.
|
|
* @this Blockly.Block
|
|
*/
|
|
init: function() {
|
|
this.setHelpUrl(Blockly.Msg.PROCEDURES_CALLRETURN_HELPURL);
|
|
this.setColour(Blockly.Blocks.procedures.HUE);
|
|
this.appendDummyInput('TOPROW')
|
|
.appendField(Blockly.Msg.PROCEDURES_CALLRETURN_CALL)
|
|
.appendField('', 'NAME');
|
|
this.setOutput(true);
|
|
// Tooltip is set in domToMutation.
|
|
this.arguments_ = [];
|
|
this.quarkConnections_ = {};
|
|
this.quarkArguments_ = null;
|
|
},
|
|
getProcedureCall: Blockly.Blocks['procedures_callnoreturn'].getProcedureCall,
|
|
renameProcedure: Blockly.Blocks['procedures_callnoreturn'].renameProcedure,
|
|
setProcedureParameters:
|
|
Blockly.Blocks['procedures_callnoreturn'].setProcedureParameters,
|
|
renderArgs_: Blockly.Blocks['procedures_callnoreturn'].renderArgs_,
|
|
mutationToDom: Blockly.Blocks['procedures_callnoreturn'].mutationToDom,
|
|
domToMutation: Blockly.Blocks['procedures_callnoreturn'].domToMutation,
|
|
renameVar: Blockly.Blocks['procedures_callnoreturn'].renameVar,
|
|
customContextMenu: Blockly.Blocks['procedures_callnoreturn'].customContextMenu
|
|
};
|
|
|
|
Blockly.Blocks['procedures_ifreturn'] = {
|
|
/**
|
|
* Block for conditionally returning a value from a procedure.
|
|
* @this Blockly.Block
|
|
*/
|
|
init: function() {
|
|
this.setHelpUrl('http://c2.com/cgi/wiki?GuardClause');
|
|
this.setColour(Blockly.Blocks.procedures.HUE);
|
|
this.appendValueInput('CONDITION')
|
|
.setCheck('Boolean')
|
|
.appendField(Blockly.Msg.CONTROLS_IF_MSG_IF);
|
|
this.appendValueInput('VALUE')
|
|
.appendField(Blockly.Msg.PROCEDURES_DEFRETURN_RETURN);
|
|
this.setInputsInline(true);
|
|
this.setPreviousStatement(true);
|
|
this.setNextStatement(true);
|
|
this.setTooltip(Blockly.Msg.PROCEDURES_IFRETURN_TOOLTIP);
|
|
this.hasReturnValue_ = true;
|
|
},
|
|
/**
|
|
* Create XML to represent whether this block has a return value.
|
|
* @return {!Element} XML storage element.
|
|
* @this Blockly.Block
|
|
*/
|
|
mutationToDom: function() {
|
|
var container = document.createElement('mutation');
|
|
container.setAttribute('value', Number(this.hasReturnValue_));
|
|
return container;
|
|
},
|
|
/**
|
|
* Parse XML to restore whether this block has a return value.
|
|
* @param {!Element} xmlElement XML storage element.
|
|
* @this Blockly.Block
|
|
*/
|
|
domToMutation: function(xmlElement) {
|
|
var value = xmlElement.getAttribute('value');
|
|
this.hasReturnValue_ = (value == 1);
|
|
if (!this.hasReturnValue_) {
|
|
this.removeInput('VALUE');
|
|
this.appendDummyInput('VALUE')
|
|
.appendField(Blockly.Msg.PROCEDURES_DEFRETURN_RETURN);
|
|
}
|
|
},
|
|
/**
|
|
* Called whenever anything on the workspace changes.
|
|
* Add warning if this flow block is not nested inside a loop.
|
|
* @this Blockly.Block
|
|
*/
|
|
onchange: function() {
|
|
var legal = false;
|
|
// Is the block nested in a procedure?
|
|
var block = this;
|
|
do {
|
|
if (block.type == 'procedures_defnoreturn' ||
|
|
block.type == 'procedures_defreturn') {
|
|
legal = true;
|
|
break;
|
|
}
|
|
block = block.getSurroundParent();
|
|
} while (block);
|
|
if (legal) {
|
|
// If needed, toggle whether this block has a return value.
|
|
if (block.type == 'procedures_defnoreturn' && this.hasReturnValue_) {
|
|
this.removeInput('VALUE');
|
|
this.appendDummyInput('VALUE')
|
|
.appendField(Blockly.Msg.PROCEDURES_DEFRETURN_RETURN);
|
|
this.hasReturnValue_ = false;
|
|
} else if (block.type == 'procedures_defreturn' &&
|
|
!this.hasReturnValue_) {
|
|
this.removeInput('VALUE');
|
|
this.appendValueInput('VALUE')
|
|
.appendField(Blockly.Msg.PROCEDURES_DEFRETURN_RETURN);
|
|
this.hasReturnValue_ = true;
|
|
}
|
|
this.setWarningText(null);
|
|
} else {
|
|
this.setWarningText(Blockly.Msg.PROCEDURES_IFRETURN_WARNING);
|
|
}
|
|
}
|
|
};
|