mirror of
https://github.com/google/blockly.git
synced 2026-01-07 00:50:27 +01:00
664 lines
20 KiB
JavaScript
664 lines
20 KiB
JavaScript
/**
|
|
* @license
|
|
* Copyright 2012 Google LLC
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* @fileoverview Logic blocks for Blockly.
|
|
* @suppress {checkTypes}
|
|
*/
|
|
'use strict';
|
|
|
|
goog.module('Blockly.libraryBlocks.logic');
|
|
|
|
/* eslint-disable-next-line no-unused-vars */
|
|
const AbstractEvent = goog.requireType('Blockly.Events.Abstract');
|
|
const Events = goog.require('Blockly.Events');
|
|
const Extensions = goog.require('Blockly.Extensions');
|
|
const xmlUtils = goog.require('Blockly.utils.xml');
|
|
/* eslint-disable-next-line no-unused-vars */
|
|
const {Block} = goog.requireType('Blockly.Block');
|
|
/* eslint-disable-next-line no-unused-vars */
|
|
const {BlockDefinition} = goog.requireType('Blockly.blocks');
|
|
const {Msg} = goog.require('Blockly.Msg');
|
|
const {Mutator} = goog.require('Blockly.Mutator');
|
|
/* eslint-disable-next-line no-unused-vars */
|
|
const {RenderedConnection} = goog.requireType('Blockly.RenderedConnection');
|
|
/* eslint-disable-next-line no-unused-vars */
|
|
const {Workspace} = goog.requireType('Blockly.Workspace');
|
|
const {createBlockDefinitionsFromJsonArray, defineBlocks} = goog.require('Blockly.common');
|
|
/** @suppress {extraRequire} */
|
|
goog.require('Blockly.FieldDropdown');
|
|
/** @suppress {extraRequire} */
|
|
goog.require('Blockly.FieldLabel');
|
|
|
|
|
|
/**
|
|
* A dictionary of the block definitions provided by this module.
|
|
* @type {!Object<string, !BlockDefinition>}
|
|
*/
|
|
const blocks = createBlockDefinitionsFromJsonArray([
|
|
// Block for boolean data type: true and false.
|
|
{
|
|
'type': 'logic_boolean',
|
|
'message0': '%1',
|
|
'args0': [
|
|
{
|
|
'type': 'field_dropdown',
|
|
'name': 'BOOL',
|
|
'options': [
|
|
['%{BKY_LOGIC_BOOLEAN_TRUE}', 'TRUE'],
|
|
['%{BKY_LOGIC_BOOLEAN_FALSE}', 'FALSE'],
|
|
],
|
|
},
|
|
],
|
|
'output': 'Boolean',
|
|
'style': 'logic_blocks',
|
|
'tooltip': '%{BKY_LOGIC_BOOLEAN_TOOLTIP}',
|
|
'helpUrl': '%{BKY_LOGIC_BOOLEAN_HELPURL}',
|
|
},
|
|
// Block for if/elseif/else condition.
|
|
{
|
|
'type': 'controls_if',
|
|
'message0': '%{BKY_CONTROLS_IF_MSG_IF} %1',
|
|
'args0': [
|
|
{
|
|
'type': 'input_value',
|
|
'name': 'IF0',
|
|
'check': 'Boolean',
|
|
},
|
|
],
|
|
'message1': '%{BKY_CONTROLS_IF_MSG_THEN} %1',
|
|
'args1': [
|
|
{
|
|
'type': 'input_statement',
|
|
'name': 'DO0',
|
|
},
|
|
],
|
|
'previousStatement': null,
|
|
'nextStatement': null,
|
|
'style': 'logic_blocks',
|
|
'helpUrl': '%{BKY_CONTROLS_IF_HELPURL}',
|
|
'suppressPrefixSuffix': true,
|
|
'mutator': 'controls_if_mutator',
|
|
'extensions': ['controls_if_tooltip'],
|
|
},
|
|
// If/else block that does not use a mutator.
|
|
{
|
|
'type': 'controls_ifelse',
|
|
'message0': '%{BKY_CONTROLS_IF_MSG_IF} %1',
|
|
'args0': [
|
|
{
|
|
'type': 'input_value',
|
|
'name': 'IF0',
|
|
'check': 'Boolean',
|
|
},
|
|
],
|
|
'message1': '%{BKY_CONTROLS_IF_MSG_THEN} %1',
|
|
'args1': [
|
|
{
|
|
'type': 'input_statement',
|
|
'name': 'DO0',
|
|
},
|
|
],
|
|
'message2': '%{BKY_CONTROLS_IF_MSG_ELSE} %1',
|
|
'args2': [
|
|
{
|
|
'type': 'input_statement',
|
|
'name': 'ELSE',
|
|
},
|
|
],
|
|
'previousStatement': null,
|
|
'nextStatement': null,
|
|
'style': 'logic_blocks',
|
|
'tooltip': '%{BKYCONTROLS_IF_TOOLTIP_2}',
|
|
'helpUrl': '%{BKY_CONTROLS_IF_HELPURL}',
|
|
'suppressPrefixSuffix': true,
|
|
'extensions': ['controls_if_tooltip'],
|
|
},
|
|
// Block for comparison operator.
|
|
{
|
|
'type': 'logic_compare',
|
|
'message0': '%1 %2 %3',
|
|
'args0': [
|
|
{
|
|
'type': 'input_value',
|
|
'name': 'A',
|
|
},
|
|
{
|
|
'type': 'field_dropdown',
|
|
'name': 'OP',
|
|
'options': [
|
|
['=', 'EQ'],
|
|
['\u2260', 'NEQ'],
|
|
['\u200F<', 'LT'],
|
|
['\u200F\u2264', 'LTE'],
|
|
['\u200F>', 'GT'],
|
|
['\u200F\u2265', 'GTE'],
|
|
],
|
|
},
|
|
{
|
|
'type': 'input_value',
|
|
'name': 'B',
|
|
},
|
|
],
|
|
'inputsInline': true,
|
|
'output': 'Boolean',
|
|
'style': 'logic_blocks',
|
|
'helpUrl': '%{BKY_LOGIC_COMPARE_HELPURL}',
|
|
'extensions': ['logic_compare', 'logic_op_tooltip'],
|
|
},
|
|
// Block for logical operations: 'and', 'or'.
|
|
{
|
|
'type': 'logic_operation',
|
|
'message0': '%1 %2 %3',
|
|
'args0': [
|
|
{
|
|
'type': 'input_value',
|
|
'name': 'A',
|
|
'check': 'Boolean',
|
|
},
|
|
{
|
|
'type': 'field_dropdown',
|
|
'name': 'OP',
|
|
'options': [
|
|
['%{BKY_LOGIC_OPERATION_AND}', 'AND'],
|
|
['%{BKY_LOGIC_OPERATION_OR}', 'OR'],
|
|
],
|
|
},
|
|
{
|
|
'type': 'input_value',
|
|
'name': 'B',
|
|
'check': 'Boolean',
|
|
},
|
|
],
|
|
'inputsInline': true,
|
|
'output': 'Boolean',
|
|
'style': 'logic_blocks',
|
|
'helpUrl': '%{BKY_LOGIC_OPERATION_HELPURL}',
|
|
'extensions': ['logic_op_tooltip'],
|
|
},
|
|
// Block for negation.
|
|
{
|
|
'type': 'logic_negate',
|
|
'message0': '%{BKY_LOGIC_NEGATE_TITLE}',
|
|
'args0': [
|
|
{
|
|
'type': 'input_value',
|
|
'name': 'BOOL',
|
|
'check': 'Boolean',
|
|
},
|
|
],
|
|
'output': 'Boolean',
|
|
'style': 'logic_blocks',
|
|
'tooltip': '%{BKY_LOGIC_NEGATE_TOOLTIP}',
|
|
'helpUrl': '%{BKY_LOGIC_NEGATE_HELPURL}',
|
|
},
|
|
// Block for null data type.
|
|
{
|
|
'type': 'logic_null',
|
|
'message0': '%{BKY_LOGIC_NULL}',
|
|
'output': null,
|
|
'style': 'logic_blocks',
|
|
'tooltip': '%{BKY_LOGIC_NULL_TOOLTIP}',
|
|
'helpUrl': '%{BKY_LOGIC_NULL_HELPURL}',
|
|
},
|
|
// Block for ternary operator.
|
|
{
|
|
'type': 'logic_ternary',
|
|
'message0': '%{BKY_LOGIC_TERNARY_CONDITION} %1',
|
|
'args0': [
|
|
{
|
|
'type': 'input_value',
|
|
'name': 'IF',
|
|
'check': 'Boolean',
|
|
},
|
|
],
|
|
'message1': '%{BKY_LOGIC_TERNARY_IF_TRUE} %1',
|
|
'args1': [
|
|
{
|
|
'type': 'input_value',
|
|
'name': 'THEN',
|
|
},
|
|
],
|
|
'message2': '%{BKY_LOGIC_TERNARY_IF_FALSE} %1',
|
|
'args2': [
|
|
{
|
|
'type': 'input_value',
|
|
'name': 'ELSE',
|
|
},
|
|
],
|
|
'output': null,
|
|
'style': 'logic_blocks',
|
|
'tooltip': '%{BKY_LOGIC_TERNARY_TOOLTIP}',
|
|
'helpUrl': '%{BKY_LOGIC_TERNARY_HELPURL}',
|
|
'extensions': ['logic_ternary'],
|
|
},
|
|
// Block representing the if statement in the controls_if mutator.
|
|
{
|
|
'type': 'controls_if_if',
|
|
'message0': '%{BKY_CONTROLS_IF_IF_TITLE_IF}',
|
|
'nextStatement': null,
|
|
'enableContextMenu': false,
|
|
'style': 'logic_blocks',
|
|
'tooltip': '%{BKY_CONTROLS_IF_IF_TOOLTIP}',
|
|
},
|
|
// Block representing the else-if statement in the controls_if mutator.
|
|
{
|
|
'type': 'controls_if_elseif',
|
|
'message0': '%{BKY_CONTROLS_IF_ELSEIF_TITLE_ELSEIF}',
|
|
'previousStatement': null,
|
|
'nextStatement': null,
|
|
'enableContextMenu': false,
|
|
'style': 'logic_blocks',
|
|
'tooltip': '%{BKY_CONTROLS_IF_ELSEIF_TOOLTIP}',
|
|
},
|
|
// Block representing the else statement in the controls_if mutator.
|
|
{
|
|
'type': 'controls_if_else',
|
|
'message0': '%{BKY_CONTROLS_IF_ELSE_TITLE_ELSE}',
|
|
'previousStatement': null,
|
|
'enableContextMenu': false,
|
|
'style': 'logic_blocks',
|
|
'tooltip': '%{BKY_CONTROLS_IF_ELSE_TOOLTIP}',
|
|
},
|
|
]);
|
|
exports.blocks = blocks;
|
|
|
|
/**
|
|
* Tooltip text, keyed by block OP value. Used by logic_compare and
|
|
* logic_operation blocks.
|
|
* @see {Extensions#buildTooltipForDropdown}
|
|
* @readonly
|
|
*/
|
|
const TOOLTIPS_BY_OP = {
|
|
// logic_compare
|
|
'EQ': '%{BKY_LOGIC_COMPARE_TOOLTIP_EQ}',
|
|
'NEQ': '%{BKY_LOGIC_COMPARE_TOOLTIP_NEQ}',
|
|
'LT': '%{BKY_LOGIC_COMPARE_TOOLTIP_LT}',
|
|
'LTE': '%{BKY_LOGIC_COMPARE_TOOLTIP_LTE}',
|
|
'GT': '%{BKY_LOGIC_COMPARE_TOOLTIP_GT}',
|
|
'GTE': '%{BKY_LOGIC_COMPARE_TOOLTIP_GTE}',
|
|
|
|
// logic_operation
|
|
'AND': '%{BKY_LOGIC_OPERATION_TOOLTIP_AND}',
|
|
'OR': '%{BKY_LOGIC_OPERATION_TOOLTIP_OR}',
|
|
};
|
|
|
|
Extensions.register(
|
|
'logic_op_tooltip',
|
|
Extensions.buildTooltipForDropdown('OP', TOOLTIPS_BY_OP));
|
|
|
|
/**
|
|
* Mutator methods added to controls_if blocks.
|
|
* @mixin
|
|
* @augments Block
|
|
* @readonly
|
|
*/
|
|
const CONTROLS_IF_MUTATOR_MIXIN = {
|
|
elseifCount_: 0,
|
|
elseCount_: 0,
|
|
|
|
/**
|
|
* Create XML to represent the number of else-if and else inputs.
|
|
* Backwards compatible serialization implementation.
|
|
* @return {Element} XML storage element.
|
|
* @this {Block}
|
|
*/
|
|
mutationToDom: function() {
|
|
if (!this.elseifCount_ && !this.elseCount_) {
|
|
return null;
|
|
}
|
|
const container = xmlUtils.createElement('mutation');
|
|
if (this.elseifCount_) {
|
|
container.setAttribute('elseif', this.elseifCount_);
|
|
}
|
|
if (this.elseCount_) {
|
|
container.setAttribute('else', 1);
|
|
}
|
|
return container;
|
|
},
|
|
/**
|
|
* Parse XML to restore the else-if and else inputs.
|
|
* Backwards compatible serialization implementation.
|
|
* @param {!Element} xmlElement XML storage element.
|
|
* @this {Block}
|
|
*/
|
|
domToMutation: function(xmlElement) {
|
|
this.elseifCount_ = parseInt(xmlElement.getAttribute('elseif'), 10) || 0;
|
|
this.elseCount_ = parseInt(xmlElement.getAttribute('else'), 10) || 0;
|
|
this.rebuildShape_();
|
|
},
|
|
/**
|
|
* Returns the state of this block as a JSON serializable object.
|
|
* @return {?{elseIfCount: (number|undefined), haseElse: (boolean|undefined)}}
|
|
* The state of this block, ie the else if count and else state.
|
|
*/
|
|
saveExtraState: function() {
|
|
if (!this.elseifCount_ && !this.elseCount_) {
|
|
return null;
|
|
}
|
|
const state = Object.create(null);
|
|
if (this.elseifCount_) {
|
|
state['elseIfCount'] = this.elseifCount_;
|
|
}
|
|
if (this.elseCount_) {
|
|
state['hasElse'] = true;
|
|
}
|
|
return state;
|
|
},
|
|
/**
|
|
* Applies the given state to this block.
|
|
* @param {*} state The state to apply to this block, ie the else if count and
|
|
* else state.
|
|
*/
|
|
loadExtraState: function(state) {
|
|
this.elseifCount_ = state['elseIfCount'] || 0;
|
|
this.elseCount_ = state['hasElse'] ? 1 : 0;
|
|
this.updateShape_();
|
|
},
|
|
/**
|
|
* Populate the mutator's dialog with this block's components.
|
|
* @param {!Workspace} workspace Mutator's workspace.
|
|
* @return {!Block} Root block in mutator.
|
|
* @this {Block}
|
|
*/
|
|
decompose: function(workspace) {
|
|
const containerBlock = workspace.newBlock('controls_if_if');
|
|
containerBlock.initSvg();
|
|
let connection = containerBlock.nextConnection;
|
|
for (let i = 1; i <= this.elseifCount_; i++) {
|
|
const elseifBlock = workspace.newBlock('controls_if_elseif');
|
|
elseifBlock.initSvg();
|
|
connection.connect(elseifBlock.previousConnection);
|
|
connection = elseifBlock.nextConnection;
|
|
}
|
|
if (this.elseCount_) {
|
|
const elseBlock = workspace.newBlock('controls_if_else');
|
|
elseBlock.initSvg();
|
|
connection.connect(elseBlock.previousConnection);
|
|
}
|
|
return containerBlock;
|
|
},
|
|
/**
|
|
* Reconfigure this block based on the mutator dialog's components.
|
|
* @param {!Block} containerBlock Root block in mutator.
|
|
* @this {Block}
|
|
*/
|
|
compose: function(containerBlock) {
|
|
let clauseBlock = containerBlock.nextConnection.targetBlock();
|
|
// Count number of inputs.
|
|
this.elseifCount_ = 0;
|
|
this.elseCount_ = 0;
|
|
const valueConnections = [null];
|
|
const statementConnections = [null];
|
|
let elseStatementConnection = null;
|
|
while (clauseBlock) {
|
|
if (clauseBlock.isInsertionMarker()) {
|
|
clauseBlock = clauseBlock.getNextBlock();
|
|
continue;
|
|
}
|
|
switch (clauseBlock.type) {
|
|
case 'controls_if_elseif':
|
|
this.elseifCount_++;
|
|
valueConnections.push(clauseBlock.valueConnection_);
|
|
statementConnections.push(clauseBlock.statementConnection_);
|
|
break;
|
|
case 'controls_if_else':
|
|
this.elseCount_++;
|
|
elseStatementConnection = clauseBlock.statementConnection_;
|
|
break;
|
|
default:
|
|
throw TypeError('Unknown block type: ' + clauseBlock.type);
|
|
}
|
|
clauseBlock = clauseBlock.getNextBlock();
|
|
}
|
|
this.updateShape_();
|
|
// Reconnect any child blocks.
|
|
this.reconnectChildBlocks_(
|
|
valueConnections, statementConnections, elseStatementConnection);
|
|
},
|
|
/**
|
|
* Store pointers to any connected child blocks.
|
|
* @param {!Block} containerBlock Root block in mutator.
|
|
* @this {Block}
|
|
*/
|
|
saveConnections: function(containerBlock) {
|
|
let clauseBlock = containerBlock.nextConnection.targetBlock();
|
|
let i = 1;
|
|
while (clauseBlock) {
|
|
if (clauseBlock.isInsertionMarker()) {
|
|
clauseBlock = clauseBlock.getNextBlock();
|
|
continue;
|
|
}
|
|
switch (clauseBlock.type) {
|
|
case 'controls_if_elseif': {
|
|
const inputIf = this.getInput('IF' + i);
|
|
const inputDo = this.getInput('DO' + i);
|
|
clauseBlock.valueConnection_ =
|
|
inputIf && inputIf.connection.targetConnection;
|
|
clauseBlock.statementConnection_ =
|
|
inputDo && inputDo.connection.targetConnection;
|
|
i++;
|
|
break;
|
|
}
|
|
case 'controls_if_else': {
|
|
const inputDo = this.getInput('ELSE');
|
|
clauseBlock.statementConnection_ =
|
|
inputDo && inputDo.connection.targetConnection;
|
|
break;
|
|
}
|
|
default:
|
|
throw TypeError('Unknown block type: ' + clauseBlock.type);
|
|
}
|
|
clauseBlock = clauseBlock.getNextBlock();
|
|
}
|
|
},
|
|
/**
|
|
* Reconstructs the block with all child blocks attached.
|
|
* @this {Block}
|
|
*/
|
|
rebuildShape_: function() {
|
|
const valueConnections = [null];
|
|
const statementConnections = [null];
|
|
let elseStatementConnection = null;
|
|
|
|
if (this.getInput('ELSE')) {
|
|
elseStatementConnection =
|
|
this.getInput('ELSE').connection.targetConnection;
|
|
}
|
|
for (let i = 1; this.getInput('IF' + i); i++) {
|
|
const inputIf = this.getInput('IF' + i);
|
|
const inputDo = this.getInput('DO' + i);
|
|
valueConnections.push(inputIf.connection.targetConnection);
|
|
statementConnections.push(inputDo.connection.targetConnection);
|
|
}
|
|
this.updateShape_();
|
|
this.reconnectChildBlocks_(
|
|
valueConnections, statementConnections, elseStatementConnection);
|
|
},
|
|
/**
|
|
* Modify this block to have the correct number of inputs.
|
|
* @this {Block}
|
|
* @private
|
|
*/
|
|
updateShape_: function() {
|
|
// Delete everything.
|
|
if (this.getInput('ELSE')) {
|
|
this.removeInput('ELSE');
|
|
}
|
|
for (let i = 1; this.getInput('IF' + i); i++) {
|
|
this.removeInput('IF' + i);
|
|
this.removeInput('DO' + i);
|
|
}
|
|
// Rebuild block.
|
|
for (let i = 1; i <= this.elseifCount_; i++) {
|
|
this.appendValueInput('IF' + i).setCheck('Boolean').appendField(
|
|
Msg['CONTROLS_IF_MSG_ELSEIF']);
|
|
this.appendStatementInput('DO' + i).appendField(
|
|
Msg['CONTROLS_IF_MSG_THEN']);
|
|
}
|
|
if (this.elseCount_) {
|
|
this.appendStatementInput('ELSE').appendField(
|
|
Msg['CONTROLS_IF_MSG_ELSE']);
|
|
}
|
|
},
|
|
/**
|
|
* Reconnects child blocks.
|
|
* @param {!Array<?RenderedConnection>} valueConnections List of
|
|
* value connections for 'if' input.
|
|
* @param {!Array<?RenderedConnection>} statementConnections List of
|
|
* statement connections for 'do' input.
|
|
* @param {?RenderedConnection} elseStatementConnection Statement
|
|
* connection for else input.
|
|
* @this {Block}
|
|
*/
|
|
reconnectChildBlocks_: function(
|
|
valueConnections, statementConnections, elseStatementConnection) {
|
|
for (let i = 1; i <= this.elseifCount_; i++) {
|
|
Mutator.reconnect(valueConnections[i], this, 'IF' + i);
|
|
Mutator.reconnect(statementConnections[i], this, 'DO' + i);
|
|
}
|
|
Mutator.reconnect(elseStatementConnection, this, 'ELSE');
|
|
},
|
|
};
|
|
|
|
Extensions.registerMutator(
|
|
'controls_if_mutator', CONTROLS_IF_MUTATOR_MIXIN, null,
|
|
['controls_if_elseif', 'controls_if_else']);
|
|
/**
|
|
* "controls_if" extension function. Adds mutator, shape updating methods, and
|
|
* dynamic tooltip to "controls_if" blocks.
|
|
* @this {Block}
|
|
*/
|
|
const CONTROLS_IF_TOOLTIP_EXTENSION = function() {
|
|
this.setTooltip(function() {
|
|
if (!this.elseifCount_ && !this.elseCount_) {
|
|
return Msg['CONTROLS_IF_TOOLTIP_1'];
|
|
} else if (!this.elseifCount_ && this.elseCount_) {
|
|
return Msg['CONTROLS_IF_TOOLTIP_2'];
|
|
} else if (this.elseifCount_ && !this.elseCount_) {
|
|
return Msg['CONTROLS_IF_TOOLTIP_3'];
|
|
} else if (this.elseifCount_ && this.elseCount_) {
|
|
return Msg['CONTROLS_IF_TOOLTIP_4'];
|
|
}
|
|
return '';
|
|
}.bind(this));
|
|
};
|
|
|
|
Extensions.register('controls_if_tooltip', CONTROLS_IF_TOOLTIP_EXTENSION);
|
|
|
|
/**
|
|
* Adds dynamic type validation for the left and right sides of a logic_compare
|
|
* block.
|
|
* @mixin
|
|
* @augments Block
|
|
* @readonly
|
|
*/
|
|
const LOGIC_COMPARE_ONCHANGE_MIXIN = {
|
|
/**
|
|
* Called whenever anything on the workspace changes.
|
|
* Prevent mismatched types from being compared.
|
|
* @param {!AbstractEvent} e Change event.
|
|
* @this {Block}
|
|
*/
|
|
onchange: function(e) {
|
|
if (!this.prevBlocks_) {
|
|
this.prevBlocks_ = [null, null];
|
|
}
|
|
|
|
const blockA = this.getInputTargetBlock('A');
|
|
const blockB = this.getInputTargetBlock('B');
|
|
// Disconnect blocks that existed prior to this change if they don't match.
|
|
if (blockA && blockB &&
|
|
!this.workspace.connectionChecker.doTypeChecks(
|
|
blockA.outputConnection, blockB.outputConnection)) {
|
|
// Mismatch between two inputs. Revert the block connections,
|
|
// bumping away the newly connected block(s).
|
|
Events.setGroup(e.group);
|
|
const prevA = this.prevBlocks_[0];
|
|
if (prevA !== blockA) {
|
|
blockA.unplug();
|
|
if (prevA && !prevA.isDisposed() && !prevA.isShadow()) {
|
|
// The shadow block is automatically replaced during unplug().
|
|
this.getInput('A').connection.connect(prevA.outputConnection);
|
|
}
|
|
}
|
|
const prevB = this.prevBlocks_[1];
|
|
if (prevB !== blockB) {
|
|
blockB.unplug();
|
|
if (prevB && !prevB.isDisposed() && !prevB.isShadow()) {
|
|
// The shadow block is automatically replaced during unplug().
|
|
this.getInput('B').connection.connect(prevB.outputConnection);
|
|
}
|
|
}
|
|
this.bumpNeighbours();
|
|
Events.setGroup(false);
|
|
}
|
|
this.prevBlocks_[0] = this.getInputTargetBlock('A');
|
|
this.prevBlocks_[1] = this.getInputTargetBlock('B');
|
|
},
|
|
};
|
|
|
|
/**
|
|
* "logic_compare" extension function. Adds type left and right side type
|
|
* checking to "logic_compare" blocks.
|
|
* @this {Block}
|
|
* @readonly
|
|
*/
|
|
const LOGIC_COMPARE_EXTENSION = function() {
|
|
// Add onchange handler to ensure types are compatible.
|
|
this.mixin(LOGIC_COMPARE_ONCHANGE_MIXIN);
|
|
};
|
|
|
|
Extensions.register('logic_compare', LOGIC_COMPARE_EXTENSION);
|
|
|
|
/**
|
|
* Adds type coordination between inputs and output.
|
|
* @mixin
|
|
* @augments Block
|
|
* @readonly
|
|
*/
|
|
const LOGIC_TERNARY_ONCHANGE_MIXIN = {
|
|
prevParentConnection_: null,
|
|
|
|
/**
|
|
* Called whenever anything on the workspace changes.
|
|
* Prevent mismatched types.
|
|
* @param {!AbstractEvent} e Change event.
|
|
* @this {Block}
|
|
*/
|
|
onchange: function(e) {
|
|
const blockA = this.getInputTargetBlock('THEN');
|
|
const blockB = this.getInputTargetBlock('ELSE');
|
|
const parentConnection = this.outputConnection.targetConnection;
|
|
// Disconnect blocks that existed prior to this change if they don't match.
|
|
if ((blockA || blockB) && parentConnection) {
|
|
for (let i = 0; i < 2; i++) {
|
|
const block = (i === 1) ? blockA : blockB;
|
|
if (block &&
|
|
!block.workspace.connectionChecker.doTypeChecks(
|
|
block.outputConnection, parentConnection)) {
|
|
// Ensure that any disconnections are grouped with the causing event.
|
|
Events.setGroup(e.group);
|
|
if (parentConnection === this.prevParentConnection_) {
|
|
this.unplug();
|
|
parentConnection.getSourceBlock().bumpNeighbours();
|
|
} else {
|
|
block.unplug();
|
|
block.bumpNeighbours();
|
|
}
|
|
Events.setGroup(false);
|
|
}
|
|
}
|
|
}
|
|
this.prevParentConnection_ = parentConnection;
|
|
},
|
|
};
|
|
|
|
Extensions.registerMixin('logic_ternary', LOGIC_TERNARY_ONCHANGE_MIXIN);
|
|
|
|
// Register provided blocks.
|
|
defineBlocks(blocks);
|