mirror of
https://github.com/scratchfoundation/scratch-blocks.git
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103 lines
3.1 KiB
JavaScript
103 lines
3.1 KiB
JavaScript
/**
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* @license
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* Visual Blocks Editor
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*
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* Copyright 2017 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 Variable getter field. Appears as a label but has a variable
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* picker in the right-click menu.
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* @author fenichel@google.com (Rachel Fenichel)
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*/
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'use strict';
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goog.provide('Blockly.FieldVariableGetter');
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goog.require('Blockly.Field');
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/**
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* Class for a variable getter field.
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* @param {string} text The initial content of the field.
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* @param {string} name Optional CSS class for the field's text.
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* @extends {Blockly.FieldLabel}
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* @constructor
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*
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*/
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Blockly.FieldVariableGetter = function(text, name) {
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Blockly.FieldVariableGetter.superClass_.constructor.call(this, text);
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this.name_ = name;
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};
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goog.inherits(Blockly.FieldVariableGetter, Blockly.Field);
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/**
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* Editable fields usually show some sort of UI for the user to change them.
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* This field should be serialized, but only edited programmatically.
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* @type {boolean}
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* @public
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*/
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Blockly.FieldVariableGetter.prototype.EDITABLE = false;
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/**
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* Serializable fields are saved by the XML renderer, non-serializable fields
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* are not. This field should be serialized, but only edited programmatically.
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* @type {boolean}
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* @public
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*/
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Blockly.FieldVariableGetter.prototype.SERIALIZABLE = true;
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/**
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* Install this field on a block.
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*/
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Blockly.FieldVariableGetter.prototype.init = function() {
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if (this.fieldGroup_) {
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// Field has already been initialized once.
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return;
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}
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Blockly.FieldVariableGetter.superClass_.init.call(this);
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if (!this.getValue()) {
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// Variables without names get uniquely named for this workspace.
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var workspace =
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this.sourceBlock_.isInFlyout ?
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this.sourceBlock_.workspace.targetWorkspace :
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this.sourceBlock_.workspace;
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this.setValue(Blockly.Variables.generateUniqueName(workspace));
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}
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// If the selected variable doesn't exist yet, create it.
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// For instance, some blocks in the toolbox have variable dropdowns filled
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// in by default.
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if (!this.sourceBlock_.isInFlyout) {
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this.sourceBlock_.workspace.createVariable(this.getValue());
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}
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};
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/**
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* This field is editable, but only through the right-click menu.
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* @private
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*/
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Blockly.FieldVariableGetter.prototype.showEditor_ = function() {
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// nop.
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};
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/**
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* Add or remove the UI indicating if this field is editable or not.
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* This field is editable, but only through the right-click menu.
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* Suppress default editable behaviour.
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*/
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Blockly.FieldVariableGetter.prototype.updateEditable = function() {
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// nop.
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};
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