Stepper rework as variable #73
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| /** | ||
| * @license | ||
| * Visual Blocks Editor | ||
| * | ||
| * Copyright 2012 Google Inc. | ||
| * https://developers.google.com/blockly/ | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| /** | ||
| * @fileoverview Variable input field of a specific component type. | ||
| * @author fraser@google.com (Neil Fraser) | ||
| */ | ||
| 'use strict'; | ||
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| goog.provide('Blockly.Blocks.ComponentFieldVariable'); | ||
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| goog.require('Blockly.Blocks'); | ||
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| /** | ||
| * Class for a variable's dropdown field. | ||
| * @param {?string} varname The default name for the variable. If null, | ||
| * a unique variable name will be generated. | ||
| * @param {?string} component_type The type of component to show in the dropdown list, eg 'Stepper' | ||
| * @param {Function=} opt_validator A function that is executed when a new | ||
| * option is selected. Its sole argument is the new option value. | ||
| * @extends {Blockly.FieldVariable} | ||
| * @constructor | ||
| */ | ||
| Blockly.Blocks.ComponentFieldVariable = function(varname, component_type, opt_validator) { | ||
| /** @type {string} */ | ||
| this.component_type = component_type; | ||
| Blockly.Blocks.ComponentFieldVariable.superClass_.constructor.call(this, | ||
| varname, opt_validator); | ||
| this.setValue(varname || ''); | ||
| }; | ||
| goog.inherits(Blockly.Blocks.ComponentFieldVariable, Blockly.FieldVariable); | ||
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| Blockly.Blocks.ComponentFieldVariable.ComponentVariables = function(root, component_type) { | ||
| var blocks; | ||
| if (root.getDescendants) { | ||
| // Root is Block. | ||
| blocks = root.getDescendants(); | ||
| } else if (root.getAllBlocks) { | ||
| // Root is Workspace. | ||
| blocks = root.getAllBlocks(); | ||
| } else { | ||
| throw 'Not Block or Workspace: ' + root; | ||
| } | ||
| var variableHash = Object.create(null); | ||
| // Iterate through every block and add each variable to the hash. | ||
| for (var x = 0; x < blocks.length; x++) { | ||
| if (blocks[x].getComponentName && blocks[x].getVars && | ||
| (blocks[x].getComponentName() == component_type)) { | ||
| var blockVariables = blocks[x].getVars(); | ||
| for (var y = 0; y < blockVariables.length; y++) { | ||
| var varName = blockVariables[y]; | ||
| // Variable name may be null if the block is only half-built. | ||
| if (varName) { | ||
| variableHash[varName.toLowerCase()] = varName; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| // Flatten the hash into a list. | ||
| var variableList = []; | ||
| for (var name in variableHash) { | ||
| variableList.push(variableHash[name]); | ||
| } | ||
| return variableList; | ||
| }; | ||
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| /** | ||
| * Return a sorted list of variable names for variable dropdown menus. | ||
| * Include a special option at the end for creating a new variable name. | ||
| * @return {!Array.<string>} Array of variable names. | ||
| * @this {!ComponentFieldVariable} | ||
| */ | ||
| Blockly.Blocks.ComponentFieldVariable.prototype.dropdownCreate = function() { | ||
| if (this.sourceBlock_ && this.sourceBlock_.workspace) { | ||
| var variableList = | ||
| Blockly.Blocks.ComponentFieldVariable.ComponentVariables(this.sourceBlock_.workspace, | ||
| this.component_type); | ||
| } else { | ||
| var variableList = []; | ||
| } | ||
| // Ensure that the currently selected variable is an option. | ||
| var name = this.getText(); | ||
| if (name && variableList.indexOf(name) == -1) { | ||
| variableList.push(name); | ||
| } | ||
| variableList.sort(goog.string.caseInsensitiveCompare); | ||
| variableList.push(Blockly.Msg.RENAME_VARIABLE); | ||
| variableList.push(Blockly.Msg.NEW_VARIABLE); | ||
| // Variables are not language-specific, use the name as both the user-facing | ||
| // text and the internal representation. | ||
| var options = []; | ||
| for (var x = 0; x < variableList.length; x++) { | ||
| options[x] = [variableList[x], variableList[x]]; | ||
| } | ||
| return options; | ||
| }; | ||
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| /** | ||
| * Finds all user-created instances of the ComponentFieldVariable block config. | ||
| * @param {!Blockly.Workspace} workspace The block's workspace. | ||
| * @param {?string} component_type The type of component setup block to obtain instances from | ||
| * @return {!Array.<string>} Array of instance names. | ||
| */ | ||
| Blockly.Blocks.ComponentFieldVariable.Instances = function(workspace, component_type) { | ||
| var instList = []; | ||
| var blocks = Blockly.mainWorkspace.getAllBlocks(); | ||
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| for (var x = 0; x < blocks.length; x++) { | ||
| var getSetupInstance = blocks[x].getComponentName; | ||
| if (getSetupInstance) { | ||
| var Instances = getSetupInstance.call(); | ||
| if (Instances) { | ||
| if (Instances == component_type) { | ||
| instList.push(blocks[x].getVars()[0]); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return instList; | ||
| }; | ||
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| /** | ||
| * Check to know of a setup block (which sets pin number) is present for a used | ||
| * ComponentFieldVariable. | ||
| * @param {!Blockly.Workspace} workspace The block's workspace. | ||
| * @param {?string} currentDropdown The selected name in the dropdown for which to check | ||
| * if setup block present | ||
| * @param {?string} component_type The type of component setup block must be checked | ||
| * @return {<boolean>} Wether setup block is present or not | ||
| */ | ||
| Blockly.Blocks.ComponentFieldVariable.CheckSetupPresent = function(workspace, currentDropdown, component_type) { | ||
| var instances = Blockly.Blocks.ComponentFieldVariable.Instances(workspace, component_type); | ||
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| // Check for configuration block presence | ||
| if (! instances) { | ||
| return false; | ||
| } else { | ||
| // Configuration blocks present, check if any selected in this block | ||
| var existingConfigSelected = false; | ||
| for (var x = 0; x < instances.length; x++) { | ||
| if (instances[x] === currentDropdown) { | ||
| existingConfigSelected = true; | ||
| } | ||
| } | ||
| return existingConfigSelected; | ||
| } | ||
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There was a problem hiding this comment. Just a suggestion, I quite like the syntax |
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| } | ||
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component_type is missing from the doc.