Files
blockly/blocks/procedures.ts
Christopher Allen 4ab8d00099 refactor(generators): Migrate JavaScript generators to TypeScript (#7602)
* refactor(generators): Migrate javascript_generator.js to TypeScript

* refactor(generators): Simplify getAdjusted

  Slightly simplify the implementation of getAdjusted, in part to
  make it more readable.  Also improve its JSDoc comment.

* refactor(generators): Migrate generators/javascript/* to TypeScript

  First pass doing very mechanistic migration, not attempting to fix
  all the resulting type errors.

* fix(generators): Fix type errors in generator functions

  This consists almost entirely of adding casts, so the code output
  by tsc should be as similar as possible to the pre-migration .js
  source files.

* refactor(generators): Migrate generators/javascript.js to TypeScript

  The way the generator functions are added to
  javascriptGenerator.forBlock has been modified so that incorrect
  generator function signatures will cause tsc to generate a type
  error.

* chore(generator): Format

  One block protected with // prettier-ignore to preserve careful
  comment formatting.

  Where there are repeated concatenations prettier has made a pretty
  mess of things, but the correct fix is probably to use template
  literals instead (rather than just locally disabling prettier).
  This has been added to the to-do list in #7600.

* fix(generators): Fixes for PR #7602

* fix(generators): Fix syntax error
2023-10-30 08:16:13 +00:00

1338 lines
44 KiB
TypeScript

/**
* @license
* Copyright 2012 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
// Former goog.module ID: Blockly.libraryBlocks.procedures
import * as ContextMenu from '../core/contextmenu.js';
import * as Events from '../core/events/events.js';
import * as Procedures from '../core/procedures.js';
import * as Variables from '../core/variables.js';
import * as Xml from '../core/xml.js';
import * as fieldRegistry from '../core/field_registry.js';
import * as xmlUtils from '../core/utils/xml.js';
import type {Abstract as AbstractEvent} from '../core/events/events_abstract.js';
import {Align} from '../core/inputs/input.js';
import type {Block} from '../core/block.js';
import type {BlockSvg} from '../core/block_svg.js';
import type {BlockCreate} from '../core/events/events_block_create.js';
import type {BlockChange} from '../core/events/events_block_change.js';
import type {BlockDefinition} from '../core/blocks.js';
import type {Connection} from '../core/connection.js';
import type {
ContextMenuOption,
LegacyContextMenuOption,
} from '../core/contextmenu_registry.js';
import {FieldCheckbox} from '../core/field_checkbox.js';
import {FieldLabel} from '../core/field_label.js';
import {FieldTextInput} from '../core/field_textinput.js';
import {Msg} from '../core/msg.js';
import {MutatorIcon as Mutator} from '../core/icons/mutator_icon.js';
import {Names} from '../core/names.js';
import type {VariableModel} from '../core/variable_model.js';
import type {Workspace} from '../core/workspace.js';
import type {WorkspaceSvg} from '../core/workspace_svg.js';
import {config} from '../core/config.js';
import {defineBlocks} from '../core/common.js';
import '../core/icons/comment_icon.js';
import '../core/icons/warning_icon.js';
/** A dictionary of the block definitions provided by this module. */
export const blocks: {[key: string]: BlockDefinition} = {};
/** Type of a block using the PROCEDURE_DEF_COMMON mixin. */
type ProcedureBlock = Block & ProcedureMixin;
interface ProcedureMixin extends ProcedureMixinType {
arguments_: string[];
argumentVarModels_: VariableModel[];
callType_: string;
paramIds_: string[];
hasStatements_: boolean;
statementConnection_: Connection | null;
}
type ProcedureMixinType = typeof PROCEDURE_DEF_COMMON;
/** Extra state for serialising procedure blocks. */
type ProcedureExtraState = {
params?: Array<{name: string; id: string}>;
hasStatements: boolean;
};
/**
* Common properties for the procedure_defnoreturn and
* procedure_defreturn blocks.
*/
const PROCEDURE_DEF_COMMON = {
/**
* Add or remove the statement block from this function definition.
*
* @param hasStatements True if a statement block is needed.
*/
setStatements_: function (this: ProcedureBlock, hasStatements: boolean) {
if (this.hasStatements_ === hasStatements) {
return;
}
if (hasStatements) {
this.appendStatementInput('STACK').appendField(
Msg['PROCEDURES_DEFNORETURN_DO'],
);
if (this.getInput('RETURN')) {
this.moveInputBefore('STACK', 'RETURN');
}
} else {
this.removeInput('STACK', true);
}
this.hasStatements_ = hasStatements;
},
/**
* Update the display of parameters for this procedure definition block.
*
* @internal
*/
updateParams_: function (this: ProcedureBlock) {
// Merge the arguments into a human-readable list.
let paramString = '';
if (this.arguments_.length) {
paramString =
Msg['PROCEDURES_BEFORE_PARAMS'] + ' ' + this.arguments_.join(', ');
}
// The params field is deterministic based on the mutation,
// no need to fire a change event.
Events.disable();
try {
this.setFieldValue(paramString, 'PARAMS');
} finally {
Events.enable();
}
},
/**
* Create XML to represent the argument inputs.
* Backwards compatible serialization implementation.
*
* @param opt_paramIds If true include the IDs of the parameter
* quarks. Used by Procedures.mutateCallers for reconnection.
* @returns XML storage element.
*/
mutationToDom: function (
this: ProcedureBlock,
opt_paramIds: boolean,
): Element {
const container = xmlUtils.createElement('mutation');
if (opt_paramIds) {
container.setAttribute('name', this.getFieldValue('NAME'));
}
for (let i = 0; i < this.argumentVarModels_.length; i++) {
const parameter = xmlUtils.createElement('arg');
const argModel = this.argumentVarModels_[i];
parameter.setAttribute('name', argModel.name);
parameter.setAttribute('varid', argModel.getId());
if (opt_paramIds && this.paramIds_) {
parameter.setAttribute('paramId', this.paramIds_[i]);
}
container.appendChild(parameter);
}
// Save whether the statement input is visible.
if (!this.hasStatements_) {
container.setAttribute('statements', 'false');
}
return container;
},
/**
* Parse XML to restore the argument inputs.
* Backwards compatible serialization implementation.
*
* @param xmlElement XML storage element.
*/
domToMutation: function (this: ProcedureBlock, xmlElement: Element) {
this.arguments_ = [];
this.argumentVarModels_ = [];
for (let i = 0, childNode; (childNode = xmlElement.childNodes[i]); i++) {
if (childNode.nodeName.toLowerCase() === 'arg') {
const childElement = childNode as Element;
const varName = childElement.getAttribute('name')!;
const varId =
childElement.getAttribute('varid') ||
childElement.getAttribute('varId');
this.arguments_.push(varName);
const variable = Variables.getOrCreateVariablePackage(
this.workspace,
varId,
varName,
'',
);
if (variable !== null) {
this.argumentVarModels_.push(variable);
} else {
console.log(
`Failed to create a variable named "${varName}", ignoring.`,
);
}
}
}
this.updateParams_();
Procedures.mutateCallers(this);
// Show or hide the statement input.
this.setStatements_(xmlElement.getAttribute('statements') !== 'false');
},
/**
* Returns the state of this block as a JSON serializable object.
*
* @returns The state of this block, eg the parameters and statements.
*/
saveExtraState: function (this: ProcedureBlock): ProcedureExtraState | null {
if (!this.argumentVarModels_.length && this.hasStatements_) {
return null;
}
const state = Object.create(null);
if (this.argumentVarModels_.length) {
state['params'] = [];
for (let i = 0; i < this.argumentVarModels_.length; i++) {
state['params'].push({
// We don't need to serialize the name, but just in case we decide
// to separate params from variables.
'name': this.argumentVarModels_[i].name,
'id': this.argumentVarModels_[i].getId(),
});
}
}
if (!this.hasStatements_) {
state['hasStatements'] = false;
}
return state;
},
/**
* Applies the given state to this block.
*
* @param state The state to apply to this block, eg the parameters
* and statements.
*/
loadExtraState: function (this: ProcedureBlock, state: ProcedureExtraState) {
this.arguments_ = [];
this.argumentVarModels_ = [];
if (state['params']) {
for (let i = 0; i < state['params'].length; i++) {
const param = state['params'][i];
const variable = Variables.getOrCreateVariablePackage(
this.workspace,
param['id'],
param['name'],
'',
);
this.arguments_.push(variable.name);
this.argumentVarModels_.push(variable);
}
}
this.updateParams_();
Procedures.mutateCallers(this);
this.setStatements_(state['hasStatements'] === false ? false : true);
},
/**
* Populate the mutator's dialog with this block's components.
*
* @param workspace Mutator's workspace.
* @returns Root block in mutator.
*/
decompose: function (
this: ProcedureBlock,
workspace: Workspace,
): ContainerBlock {
/*
* Creates the following XML:
* <block type="procedures_mutatorcontainer">
* <statement name="STACK">
* <block type="procedures_mutatorarg">
* <field name="NAME">arg1_name</field>
* <next>etc...</next>
* </block>
* </statement>
* </block>
*/
const containerBlockNode = xmlUtils.createElement('block');
containerBlockNode.setAttribute('type', 'procedures_mutatorcontainer');
const statementNode = xmlUtils.createElement('statement');
statementNode.setAttribute('name', 'STACK');
containerBlockNode.appendChild(statementNode);
let node = statementNode;
for (let i = 0; i < this.arguments_.length; i++) {
const argBlockNode = xmlUtils.createElement('block');
argBlockNode.setAttribute('type', 'procedures_mutatorarg');
const fieldNode = xmlUtils.createElement('field');
fieldNode.setAttribute('name', 'NAME');
const argumentName = xmlUtils.createTextNode(this.arguments_[i]);
fieldNode.appendChild(argumentName);
argBlockNode.appendChild(fieldNode);
const nextNode = xmlUtils.createElement('next');
argBlockNode.appendChild(nextNode);
node.appendChild(argBlockNode);
node = nextNode;
}
const containerBlock = Xml.domToBlock(
containerBlockNode,
workspace,
) as ContainerBlock;
if (this.type === 'procedures_defreturn') {
containerBlock.setFieldValue(this.hasStatements_, 'STATEMENTS');
} else {
containerBlock.removeInput('STATEMENT_INPUT');
}
// Initialize procedure's callers with blank IDs.
Procedures.mutateCallers(this);
return containerBlock;
},
/**
* Reconfigure this block based on the mutator dialog's components.
*
* @param containerBlock Root block in mutator.
*/
compose: function (this: ProcedureBlock, containerBlock: ContainerBlock) {
// Parameter list.
this.arguments_ = [];
this.paramIds_ = [];
this.argumentVarModels_ = [];
let paramBlock = containerBlock.getInputTargetBlock('STACK');
while (paramBlock && !paramBlock.isInsertionMarker()) {
const varName = paramBlock.getFieldValue('NAME');
this.arguments_.push(varName);
const variable = this.workspace.getVariable(varName, '')!;
this.argumentVarModels_.push(variable);
this.paramIds_.push(paramBlock.id);
paramBlock =
paramBlock.nextConnection && paramBlock.nextConnection.targetBlock();
}
this.updateParams_();
Procedures.mutateCallers(this);
// Show/hide the statement input.
let hasStatements = containerBlock.getFieldValue('STATEMENTS');
if (hasStatements !== null) {
hasStatements = hasStatements === 'TRUE';
if (this.hasStatements_ !== hasStatements) {
if (hasStatements) {
this.setStatements_(true);
// Restore the stack, if one was saved.
this.statementConnection_?.reconnect(this, 'STACK');
this.statementConnection_ = null;
} else {
// Save the stack, then disconnect it.
const stackConnection = this.getInput('STACK')!.connection;
this.statementConnection_ = stackConnection!.targetConnection;
if (this.statementConnection_) {
const stackBlock = stackConnection!.targetBlock()!;
stackBlock.unplug();
stackBlock.bumpNeighbours();
}
this.setStatements_(false);
}
}
}
},
/**
* Return all variables referenced by this block.
*
* @returns List of variable names.
*/
getVars: function (this: ProcedureBlock): string[] {
return this.arguments_;
},
/**
* Return all variables referenced by this block.
*
* @returns List of variable models.
*/
getVarModels: function (this: ProcedureBlock): VariableModel[] {
return this.argumentVarModels_;
},
/**
* Notification that a variable is renaming.
* If the ID matches one of this block's variables, rename it.
*
* @param oldId ID of variable to rename.
* @param newId ID of new variable. May be the same as oldId, but
* with an updated name. Guaranteed to be the same type as the
* old variable.
*/
renameVarById: function (
this: ProcedureBlock & BlockSvg,
oldId: string,
newId: string,
) {
const oldVariable = this.workspace.getVariableById(oldId)!;
if (oldVariable.type !== '') {
// Procedure arguments always have the empty type.
return;
}
const oldName = oldVariable.name;
const newVar = this.workspace.getVariableById(newId)!;
let change = false;
for (let i = 0; i < this.argumentVarModels_.length; i++) {
if (this.argumentVarModels_[i].getId() === oldId) {
this.arguments_[i] = newVar.name;
this.argumentVarModels_[i] = newVar;
change = true;
}
}
if (change) {
this.displayRenamedVar_(oldName, newVar.name);
Procedures.mutateCallers(this);
}
},
/**
* Notification that a variable is renaming but keeping the same ID. If the
* variable is in use on this block, rerender to show the new name.
*
* @param variable The variable being renamed.
*/
updateVarName: function (
this: ProcedureBlock & BlockSvg,
variable: VariableModel,
) {
const newName = variable.name;
let change = false;
let oldName;
for (let i = 0; i < this.argumentVarModels_.length; i++) {
if (this.argumentVarModels_[i].getId() === variable.getId()) {
oldName = this.arguments_[i];
this.arguments_[i] = newName;
change = true;
}
}
if (change) {
this.displayRenamedVar_(oldName as string, newName);
Procedures.mutateCallers(this);
}
},
/**
* Update the display to reflect a newly renamed argument.
*
* @internal
* @param oldName The old display name of the argument.
* @param newName The new display name of the argument.
*/
displayRenamedVar_: function (
this: ProcedureBlock & BlockSvg,
oldName: string,
newName: string,
) {
this.updateParams_();
// Update the mutator's variables if the mutator is open.
const mutator = this.getIcon(Mutator.TYPE);
if (mutator && mutator.bubbleIsVisible()) {
const blocks = mutator.getWorkspace()!.getAllBlocks(false);
for (let i = 0, block; (block = blocks[i]); i++) {
if (
block.type === 'procedures_mutatorarg' &&
Names.equals(oldName, block.getFieldValue('NAME'))
) {
block.setFieldValue(newName, 'NAME');
}
}
}
},
/**
* Add custom menu options to this block's context menu.
*
* @param options List of menu options to add to.
*/
customContextMenu: function (
this: ProcedureBlock,
options: Array<ContextMenuOption | LegacyContextMenuOption>,
) {
if (this.isInFlyout) {
return;
}
// Add option to create caller.
const name = this.getFieldValue('NAME');
const callProcedureBlockState = {
type: (this as AnyDuringMigration).callType_,
extraState: {name: name, params: this.arguments_},
};
options.push({
enabled: true,
text: Msg['PROCEDURES_CREATE_DO'].replace('%1', name),
callback: ContextMenu.callbackFactory(this, callProcedureBlockState),
});
// Add options to create getters for each parameter.
if (!this.isCollapsed()) {
for (let i = 0; i < this.argumentVarModels_.length; i++) {
const argVar = this.argumentVarModels_[i];
const getVarBlockState = {
type: 'variables_get',
fields: {
VAR: {name: argVar.name, id: argVar.getId(), type: argVar.type},
},
};
options.push({
enabled: true,
text: Msg['VARIABLES_SET_CREATE_GET'].replace('%1', argVar.name),
callback: ContextMenu.callbackFactory(this, getVarBlockState),
});
}
}
},
};
blocks['procedures_defnoreturn'] = {
...PROCEDURE_DEF_COMMON,
/**
* Block for defining a procedure with no return value.
*/
init: function (this: ProcedureBlock & BlockSvg) {
const initName = Procedures.findLegalName('', this);
const nameField = fieldRegistry.fromJson({
type: 'field_input',
text: initName,
}) as FieldTextInput;
nameField!.setValidator(Procedures.rename);
nameField.setSpellcheck(false);
this.appendDummyInput()
.appendField(Msg['PROCEDURES_DEFNORETURN_TITLE'])
.appendField(nameField, 'NAME')
.appendField('', 'PARAMS');
this.setMutator(new Mutator(['procedures_mutatorarg'], this));
if (
(this.workspace.options.comments ||
(this.workspace.options.parentWorkspace &&
this.workspace.options.parentWorkspace.options.comments)) &&
Msg['PROCEDURES_DEFNORETURN_COMMENT']
) {
this.setCommentText(Msg['PROCEDURES_DEFNORETURN_COMMENT']);
}
this.setStyle('procedure_blocks');
this.setTooltip(Msg['PROCEDURES_DEFNORETURN_TOOLTIP']);
this.setHelpUrl(Msg['PROCEDURES_DEFNORETURN_HELPURL']);
this.arguments_ = [];
this.argumentVarModels_ = [];
this.setStatements_(true);
this.statementConnection_ = null;
},
/**
* Return the signature of this procedure definition.
*
* @returns Tuple containing three elements:
* - the name of the defined procedure,
* - a list of all its arguments,
* - that it DOES NOT have a return value.
*/
getProcedureDef: function (this: ProcedureBlock): [string, string[], false] {
return [this.getFieldValue('NAME'), this.arguments_, false];
},
callType_: 'procedures_callnoreturn',
};
blocks['procedures_defreturn'] = {
...PROCEDURE_DEF_COMMON,
/**
* Block for defining a procedure with a return value.
*/
init: function (this: ProcedureBlock & BlockSvg) {
const initName = Procedures.findLegalName('', this);
const nameField = fieldRegistry.fromJson({
type: 'field_input',
text: initName,
}) as FieldTextInput;
nameField.setValidator(Procedures.rename);
nameField.setSpellcheck(false);
this.appendDummyInput()
.appendField(Msg['PROCEDURES_DEFRETURN_TITLE'])
.appendField(nameField, 'NAME')
.appendField('', 'PARAMS');
this.appendValueInput('RETURN')
.setAlign(Align.RIGHT)
.appendField(Msg['PROCEDURES_DEFRETURN_RETURN']);
this.setMutator(new Mutator(['procedures_mutatorarg'], this));
if (
(this.workspace.options.comments ||
(this.workspace.options.parentWorkspace &&
this.workspace.options.parentWorkspace.options.comments)) &&
Msg['PROCEDURES_DEFRETURN_COMMENT']
) {
this.setCommentText(Msg['PROCEDURES_DEFRETURN_COMMENT']);
}
this.setStyle('procedure_blocks');
this.setTooltip(Msg['PROCEDURES_DEFRETURN_TOOLTIP']);
this.setHelpUrl(Msg['PROCEDURES_DEFRETURN_HELPURL']);
this.arguments_ = [];
this.argumentVarModels_ = [];
this.setStatements_(true);
this.statementConnection_ = null;
},
/**
* Return the signature of this procedure definition.
*
* @returns Tuple containing three elements:
* - the name of the defined procedure,
* - a list of all its arguments,
* - that it DOES have a return value.
*/
getProcedureDef: function (this: ProcedureBlock): [string, string[], true] {
return [this.getFieldValue('NAME'), this.arguments_, true];
},
callType_: 'procedures_callreturn',
};
/** Type of a procedures_mutatorcontainer block. */
type ContainerBlock = Block & ContainerMixin;
interface ContainerMixin extends ContainerMixinType {}
type ContainerMixinType = typeof PROCEDURES_MUTATORCONTAINER;
const PROCEDURES_MUTATORCONTAINER = {
/**
* Mutator block for procedure container.
*/
init: function (this: ContainerBlock) {
this.appendDummyInput().appendField(
Msg['PROCEDURES_MUTATORCONTAINER_TITLE'],
);
this.appendStatementInput('STACK');
this.appendDummyInput('STATEMENT_INPUT')
.appendField(Msg['PROCEDURES_ALLOW_STATEMENTS'])
.appendField(
fieldRegistry.fromJson({
type: 'field_checkbox',
checked: true,
}) as FieldCheckbox,
'STATEMENTS',
);
this.setStyle('procedure_blocks');
this.setTooltip(Msg['PROCEDURES_MUTATORCONTAINER_TOOLTIP']);
this.contextMenu = false;
},
};
blocks['procedures_mutatorcontainer'] = PROCEDURES_MUTATORCONTAINER;
/** Type of a procedures_mutatorarg block. */
type ArgumentBlock = Block & ArgumentMixin;
interface ArgumentMixin extends ArgumentMixinType {}
type ArgumentMixinType = typeof PROCEDURES_MUTATORARGUMENT;
// TODO(#6920): This is kludgy.
type FieldTextInputForArgument = FieldTextInput & {
oldShowEditorFn_(_e?: Event, quietInput?: boolean): void;
createdVariables_: VariableModel[];
};
const PROCEDURES_MUTATORARGUMENT = {
/**
* Mutator block for procedure argument.
*/
init: function (this: ArgumentBlock) {
const field = fieldRegistry.fromJson({
type: 'field_input',
text: Procedures.DEFAULT_ARG,
}) as FieldTextInputForArgument;
field.setValidator(this.validator_);
// Hack: override showEditor to do just a little bit more work.
// We don't have a good place to hook into the start of a text edit.
field.oldShowEditorFn_ = (field as AnyDuringMigration).showEditor_;
const newShowEditorFn = function (this: typeof field) {
this.createdVariables_ = [];
this.oldShowEditorFn_();
};
(field as AnyDuringMigration).showEditor_ = newShowEditorFn;
this.appendDummyInput()
.appendField(Msg['PROCEDURES_MUTATORARG_TITLE'])
.appendField(field, 'NAME');
this.setPreviousStatement(true);
this.setNextStatement(true);
this.setStyle('procedure_blocks');
this.setTooltip(Msg['PROCEDURES_MUTATORARG_TOOLTIP']);
this.contextMenu = false;
// Create the default variable when we drag the block in from the flyout.
// Have to do this after installing the field on the block.
field.onFinishEditing_ = this.deleteIntermediateVars_;
// Create an empty list so onFinishEditing_ has something to look at, even
// though the editor was never opened.
field.createdVariables_ = [];
field.onFinishEditing_('x');
},
/**
* Obtain a valid name for the procedure argument. Create a variable if
* necessary.
* Merge runs of whitespace. Strip leading and trailing whitespace.
* Beyond this, all names are legal.
*
* @internal
* @param varName User-supplied name.
* @returns Valid name, or null if a name was not specified.
*/
validator_: function (
this: FieldTextInputForArgument,
varName: string,
): string | null {
const sourceBlock = this.getSourceBlock()!;
const outerWs = sourceBlock!.workspace.getRootWorkspace()!;
varName = varName.replace(/[\s\xa0]+/g, ' ').replace(/^ | $/g, '');
if (!varName) {
return null;
}
// Prevents duplicate parameter names in functions
const workspace =
(sourceBlock.workspace as WorkspaceSvg).targetWorkspace ||
sourceBlock.workspace;
const blocks = workspace.getAllBlocks(false);
const caselessName = varName.toLowerCase();
for (let i = 0; i < blocks.length; i++) {
if (blocks[i].id === this.getSourceBlock()!.id) {
continue;
}
// Other blocks values may not be set yet when this is loaded.
const otherVar = blocks[i].getFieldValue('NAME');
if (otherVar && otherVar.toLowerCase() === caselessName) {
return null;
}
}
// Don't create variables for arg blocks that
// only exist in the mutator's flyout.
if (sourceBlock.isInFlyout) {
return varName;
}
let model = outerWs.getVariable(varName, '');
if (model && model.name !== varName) {
// Rename the variable (case change)
outerWs.renameVariableById(model.getId(), varName);
}
if (!model) {
model = outerWs.createVariable(varName, '');
if (model && this.createdVariables_) {
this.createdVariables_.push(model);
}
}
return varName;
},
/**
* Called when focusing away from the text field.
* Deletes all variables that were created as the user typed their intended
* variable name.
*
* @internal
* @param newText The new variable name.
*/
deleteIntermediateVars_: function (
this: FieldTextInputForArgument,
newText: string,
) {
const outerWs = this.getSourceBlock()!.workspace.getRootWorkspace();
if (!outerWs) {
return;
}
for (let i = 0; i < this.createdVariables_.length; i++) {
const model = this.createdVariables_[i];
if (model.name !== newText) {
outerWs.deleteVariableById(model.getId());
}
}
},
};
blocks['procedures_mutatorarg'] = PROCEDURES_MUTATORARGUMENT;
/** Type of a block using the PROCEDURE_CALL_COMMON mixin. */
type CallBlock = Block & CallMixin;
interface CallMixin extends CallMixinType {
argumentVarModels_: VariableModel[];
arguments_: string[];
defType_: string;
quarkIds_: string[] | null;
quarkConnections_: {[id: string]: Connection};
previousEnabledState_: boolean;
}
type CallMixinType = typeof PROCEDURE_CALL_COMMON;
/** Extra state for serialising call blocks. */
type CallExtraState = {
name: string;
params?: string[];
};
/**
* Common properties for the procedure_callnoreturn and
* procedure_callreturn blocks.
*/
const PROCEDURE_CALL_COMMON = {
/**
* Returns the name of the procedure this block calls.
*
* @returns Procedure name.
*/
getProcedureCall: function (this: CallBlock): string {
// The NAME field is guaranteed to exist, null will never be returned.
return this.getFieldValue('NAME');
},
/**
* Notification that a procedure is renaming.
* If the name matches this block's procedure, rename it.
*
* @param oldName Previous name of procedure.
* @param newName Renamed procedure.
*/
renameProcedure: function (
this: CallBlock,
oldName: string,
newName: string,
) {
if (Names.equals(oldName, this.getProcedureCall())) {
this.setFieldValue(newName, 'NAME');
const baseMsg = this.outputConnection
? Msg['PROCEDURES_CALLRETURN_TOOLTIP']
: Msg['PROCEDURES_CALLNORETURN_TOOLTIP'];
this.setTooltip(baseMsg.replace('%1', newName));
}
},
/**
* Notification that the procedure's parameters have changed.
*
* @internal
* @param paramNames New param names, e.g. ['x', 'y', 'z'].
* @param paramIds IDs of params (consistent for each parameter
* through the life of a mutator, regardless of param renaming),
* e.g. ['piua', 'f8b_', 'oi.o'].
*/
setProcedureParameters_: function (
this: CallBlock,
paramNames: string[],
paramIds: string[],
) {
// Data structures:
// this.arguments = ['x', 'y']
// Existing param names.
// this.quarkConnections_ {piua: null, f8b_: Connection}
// Look-up of paramIds to connections plugged into the call block.
// this.quarkIds_ = ['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.
const defBlock = Procedures.getDefinition(
this.getProcedureCall(),
this.workspace,
);
const mutatorIcon = defBlock && defBlock.getIcon(Mutator.TYPE);
const mutatorOpen = mutatorIcon && mutatorIcon.bubbleIsVisible();
if (!mutatorOpen) {
this.quarkConnections_ = {};
this.quarkIds_ = null;
} else {
// fix #6091 - this call could cause an error when outside if-else
// expanding block while mutating prevents another error (ancient fix)
this.setCollapsed(false);
}
// Test arguments (arrays of strings) for changes. '\n' is not a valid
// argument name character, so it is a valid delimiter here.
if (paramNames.join('\n') === this.arguments_.join('\n')) {
// No change.
this.quarkIds_ = paramIds;
return;
}
if (paramIds.length !== paramNames.length) {
throw RangeError('paramNames and paramIds must be the same length.');
}
if (!this.quarkIds_) {
// Initialize tracking for this block.
this.quarkConnections_ = {};
this.quarkIds_ = [];
}
// Update the quarkConnections_ with existing connections.
for (let i = 0; i < this.arguments_.length; i++) {
const input = this.getInput('ARG' + i);
if (input) {
const connection = input.connection!.targetConnection!;
this.quarkConnections_[this.quarkIds_[i]] = connection;
if (
mutatorOpen &&
connection &&
paramIds.indexOf(this.quarkIds_[i]) === -1
) {
// This connection should no longer be attached to this block.
connection.disconnect();
connection.getSourceBlock().bumpNeighbours();
}
}
}
// Rebuild the block's arguments.
this.arguments_ = ([] as string[]).concat(paramNames);
// And rebuild the argument model list.
this.argumentVarModels_ = [];
for (let i = 0; i < this.arguments_.length; i++) {
const variable = Variables.getOrCreateVariablePackage(
this.workspace,
null,
this.arguments_[i],
'',
);
this.argumentVarModels_.push(variable);
}
this.updateShape_();
this.quarkIds_ = paramIds;
// Reconnect any child blocks.
if (this.quarkIds_) {
for (let i = 0; i < this.arguments_.length; i++) {
const quarkId: string = this.quarkIds_[i]; // TODO(#6920)
if (quarkId in this.quarkConnections_) {
// TODO(#6920): investigate claimed circular initialisers.
const connection: Connection = this.quarkConnections_[quarkId];
if (!connection?.reconnect(this, 'ARG' + i)) {
// Block no longer exists or has been attached elsewhere.
delete this.quarkConnections_[quarkId];
}
}
}
}
},
/**
* Modify this block to have the correct number of arguments.
*
* @internal
*/
updateShape_: function (this: CallBlock) {
for (let i = 0; i < this.arguments_.length; i++) {
const argField = this.getField('ARGNAME' + i);
if (argField) {
// Ensure argument name is up to date.
// The argument name field is deterministic based on the mutation,
// no need to fire a change event.
Events.disable();
try {
argField.setValue(this.arguments_[i]);
} finally {
Events.enable();
}
} else {
// Add new input.
const newField = fieldRegistry.fromJson({
type: 'field_label',
text: this.arguments_[i],
}) as FieldLabel;
const input = this.appendValueInput('ARG' + i)
.setAlign(Align.RIGHT)
.appendField(newField, 'ARGNAME' + i);
input.init();
}
}
// Remove deleted inputs.
for (let i = this.arguments_.length; this.getInput('ARG' + i); i++) {
this.removeInput('ARG' + i);
}
// Add 'with:' if there are parameters, remove otherwise.
const topRow = this.getInput('TOPROW');
if (topRow) {
if (this.arguments_.length) {
if (!this.getField('WITH')) {
topRow.appendField(Msg['PROCEDURES_CALL_BEFORE_PARAMS'], 'WITH');
topRow.init();
}
} else {
if (this.getField('WITH')) {
topRow.removeField('WITH');
}
}
}
},
/**
* Create XML to represent the (non-editable) name and arguments.
* Backwards compatible serialization implementation.
*
* @returns XML storage element.
*/
mutationToDom: function (this: CallBlock): Element {
const container = xmlUtils.createElement('mutation');
container.setAttribute('name', this.getProcedureCall());
for (let i = 0; i < this.arguments_.length; i++) {
const parameter = xmlUtils.createElement('arg');
parameter.setAttribute('name', this.arguments_[i]);
container.appendChild(parameter);
}
return container;
},
/**
* Parse XML to restore the (non-editable) name and parameters.
* Backwards compatible serialization implementation.
*
* @param xmlElement XML storage element.
*/
domToMutation: function (this: CallBlock, xmlElement: Element) {
const name = xmlElement.getAttribute('name')!;
this.renameProcedure(this.getProcedureCall(), name);
const args: string[] = [];
const paramIds = [];
for (let i = 0, childNode; (childNode = xmlElement.childNodes[i]); i++) {
if (childNode.nodeName.toLowerCase() === 'arg') {
args.push((childNode as Element).getAttribute('name')!);
paramIds.push((childNode as Element).getAttribute('paramId')!);
}
}
this.setProcedureParameters_(args, paramIds);
},
/**
* Returns the state of this block as a JSON serializable object.
*
* @returns The state of this block, ie the params and procedure name.
*/
saveExtraState: function (this: CallBlock): CallExtraState {
const state = Object.create(null);
state['name'] = this.getProcedureCall();
if (this.arguments_.length) {
state['params'] = this.arguments_;
}
return state;
},
/**
* Applies the given state to this block.
*
* @param state The state to apply to this block, ie the params and
* procedure name.
*/
loadExtraState: function (this: CallBlock, state: CallExtraState) {
this.renameProcedure(this.getProcedureCall(), state['name']);
const params = state['params'];
if (params) {
const ids: string[] = [];
ids.length = params.length;
ids.fill(null as unknown as string); // TODO(#6920)
this.setProcedureParameters_(params, ids);
}
},
/**
* Return all variables referenced by this block.
*
* @returns List of variable names.
*/
getVars: function (this: CallBlock): string[] {
return this.arguments_;
},
/**
* Return all variables referenced by this block.
*
* @returns List of variable models.
*/
getVarModels: function (this: CallBlock): VariableModel[] {
return this.argumentVarModels_;
},
/**
* Procedure calls cannot exist without the corresponding procedure
* definition. Enforce this link whenever an event is fired.
*
* @param event Change event.
*/
onchange: function (this: CallBlock, event: AbstractEvent) {
if (!this.workspace || this.workspace.isFlyout) {
// Block is deleted or is in a flyout.
return;
}
if (!event.recordUndo) {
// Events not generated by user. Skip handling.
return;
}
if (
event.type === Events.BLOCK_CREATE &&
(event as BlockCreate).ids!.indexOf(this.id) !== -1
) {
// Look for the case where a procedure call was created (usually through
// paste) and there is no matching definition. In this case, create
// an empty definition block with the correct signature.
const name = this.getProcedureCall();
let def = Procedures.getDefinition(name, this.workspace);
if (
def &&
(def.type !== this.defType_ ||
JSON.stringify(def.getVars()) !== JSON.stringify(this.arguments_))
) {
// The signatures don't match.
def = null;
}
if (!def) {
Events.setGroup(event.group);
/**
* Create matching definition block.
* <xml xmlns="https://developers.google.com/blockly/xml">
* <block type="procedures_defreturn" x="10" y="20">
* <mutation name="test">
* <arg name="x"></arg>
* </mutation>
* <field name="NAME">test</field>
* </block>
* </xml>
*/
const xml = xmlUtils.createElement('xml');
const block = xmlUtils.createElement('block');
block.setAttribute('type', this.defType_);
const xy = this.getRelativeToSurfaceXY();
const x = xy.x + config.snapRadius * (this.RTL ? -1 : 1);
const y = xy.y + config.snapRadius * 2;
block.setAttribute('x', `${x}`);
block.setAttribute('y', `${y}`);
const mutation = this.mutationToDom();
block.appendChild(mutation);
const field = xmlUtils.createElement('field');
field.setAttribute('name', 'NAME');
const callName = this.getProcedureCall();
const newName = Procedures.findLegalName(callName, this);
if (callName !== newName) {
this.renameProcedure(callName, newName);
}
field.appendChild(xmlUtils.createTextNode(callName));
block.appendChild(field);
xml.appendChild(block);
Xml.domToWorkspace(xml, this.workspace);
Events.setGroup(false);
}
} else if (event.type === Events.BLOCK_DELETE) {
// Look for the case where a procedure definition has been deleted,
// leaving this block (a procedure call) orphaned. In this case, delete
// the orphan.
const name = this.getProcedureCall();
const def = Procedures.getDefinition(name, this.workspace);
if (!def) {
Events.setGroup(event.group);
this.dispose(true);
Events.setGroup(false);
}
} else if (
event.type === Events.BLOCK_CHANGE &&
(event as BlockChange).element === 'disabled'
) {
const blockChangeEvent = event as BlockChange;
const name = this.getProcedureCall();
const def = Procedures.getDefinition(name, this.workspace);
if (def && def.id === blockChangeEvent.blockId) {
// in most cases the old group should be ''
const oldGroup = Events.getGroup();
if (oldGroup) {
// This should only be possible programmatically and may indicate a
// problem with event grouping. If you see this message please
// investigate. If the use ends up being valid we may need to reorder
// events in the undo stack.
console.log(
'Saw an existing group while responding to a definition change',
);
}
Events.setGroup(event.group);
if (blockChangeEvent.newValue) {
this.previousEnabledState_ = this.isEnabled();
this.setEnabled(false);
} else {
this.setEnabled(this.previousEnabledState_);
}
Events.setGroup(oldGroup);
}
}
},
/**
* Add menu option to find the definition block for this call.
*
* @param options List of menu options to add to.
*/
customContextMenu: function (
this: CallBlock,
options: Array<ContextMenuOption | LegacyContextMenuOption>,
) {
if (!(this.workspace as WorkspaceSvg).isMovable()) {
// If we center on the block and the workspace isn't movable we could
// loose blocks at the edges of the workspace.
return;
}
const name = this.getProcedureCall();
const workspace = this.workspace;
options.push({
enabled: true,
text: Msg['PROCEDURES_HIGHLIGHT_DEF'],
callback: function () {
const def = Procedures.getDefinition(name, workspace);
if (def) {
(workspace as WorkspaceSvg).centerOnBlock(def.id);
(def as BlockSvg).select();
}
},
});
},
};
blocks['procedures_callnoreturn'] = {
...PROCEDURE_CALL_COMMON,
/**
* Block for calling a procedure with no return value.
*/
init: function (this: CallBlock) {
this.appendDummyInput('TOPROW').appendField('', 'NAME');
this.setPreviousStatement(true);
this.setNextStatement(true);
this.setStyle('procedure_blocks');
// Tooltip is set in renameProcedure.
this.setHelpUrl(Msg['PROCEDURES_CALLNORETURN_HELPURL']);
this.arguments_ = [];
this.argumentVarModels_ = [];
this.quarkConnections_ = {};
this.quarkIds_ = null;
this.previousEnabledState_ = true;
},
defType_: 'procedures_defnoreturn',
};
blocks['procedures_callreturn'] = {
...PROCEDURE_CALL_COMMON,
/**
* Block for calling a procedure with a return value.
*/
init: function (this: CallBlock) {
this.appendDummyInput('TOPROW').appendField('', 'NAME');
this.setOutput(true);
this.setStyle('procedure_blocks');
// Tooltip is set in domToMutation.
this.setHelpUrl(Msg['PROCEDURES_CALLRETURN_HELPURL']);
this.arguments_ = [];
this.argumentVarModels_ = [];
this.quarkConnections_ = {};
this.quarkIds_ = null;
this.previousEnabledState_ = true;
},
defType_: 'procedures_defreturn',
};
/**
* Type of a procedures_ifreturn block.
*
* @internal
*/
export type IfReturnBlock = Block & IfReturnMixin;
interface IfReturnMixin extends IfReturnMixinType {
hasReturnValue_: boolean;
}
type IfReturnMixinType = typeof PROCEDURES_IFRETURN;
const PROCEDURES_IFRETURN = {
/**
* Block for conditionally returning a value from a procedure.
*/
init: function (this: IfReturnBlock) {
this.appendValueInput('CONDITION')
.setCheck('Boolean')
.appendField(Msg['CONTROLS_IF_MSG_IF']);
this.appendValueInput('VALUE').appendField(
Msg['PROCEDURES_DEFRETURN_RETURN'],
);
this.setInputsInline(true);
this.setPreviousStatement(true);
this.setNextStatement(true);
this.setStyle('procedure_blocks');
this.setTooltip(Msg['PROCEDURES_IFRETURN_TOOLTIP']);
this.setHelpUrl(Msg['PROCEDURES_IFRETURN_HELPURL']);
this.hasReturnValue_ = true;
},
/**
* Create XML to represent whether this block has a return value.
*
* @returns XML storage element.
*/
mutationToDom: function (this: IfReturnBlock): Element {
const container = xmlUtils.createElement('mutation');
container.setAttribute('value', String(Number(this.hasReturnValue_)));
return container;
},
/**
* Parse XML to restore whether this block has a return value.
*
* @param xmlElement XML storage element.
*/
domToMutation: function (this: IfReturnBlock, xmlElement: Element) {
const value = xmlElement.getAttribute('value');
this.hasReturnValue_ = value === '1';
if (!this.hasReturnValue_) {
this.removeInput('VALUE');
this.appendDummyInput('VALUE').appendField(
Msg['PROCEDURES_DEFRETURN_RETURN'],
);
}
},
// This block does not need JSO serialization hooks (saveExtraState and
// loadExtraState) because the state of this block is already encoded in the
// block's position in the workspace.
// XML hooks are kept for backwards compatibility.
/**
* Called whenever anything on the workspace changes.
* Add warning if this flow block is not nested inside a loop.
*
* @param e Move event.
*/
onchange: function (this: IfReturnBlock, e: AbstractEvent) {
if (
((this.workspace as WorkspaceSvg).isDragging &&
(this.workspace as WorkspaceSvg).isDragging()) ||
e.type !== Events.BLOCK_MOVE
) {
return; // Don't change state at the start of a drag.
}
let legal = false;
// Is the block nested in a procedure?
let block = this; // eslint-disable-line @typescript-eslint/no-this-alias
do {
if (this.FUNCTION_TYPES.indexOf(block.type) !== -1) {
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(
Msg['PROCEDURES_DEFRETURN_RETURN'],
);
this.hasReturnValue_ = false;
} else if (
block.type === 'procedures_defreturn' &&
!this.hasReturnValue_
) {
this.removeInput('VALUE');
this.appendValueInput('VALUE').appendField(
Msg['PROCEDURES_DEFRETURN_RETURN'],
);
this.hasReturnValue_ = true;
}
this.setWarningText(null);
} else {
this.setWarningText(Msg['PROCEDURES_IFRETURN_WARNING']);
}
if (!this.isInFlyout) {
const group = Events.getGroup();
// Makes it so the move and the disable event get undone together.
Events.setGroup(e.group);
this.setEnabled(legal);
Events.setGroup(group);
}
},
/**
* List of block types that are functions and thus do not need warnings.
* To add a new function type add this to your code:
* Blocks['procedures_ifreturn'].FUNCTION_TYPES.push('custom_func');
*/
FUNCTION_TYPES: ['procedures_defnoreturn', 'procedures_defreturn'],
};
blocks['procedures_ifreturn'] = PROCEDURES_IFRETURN;
// Register provided blocks.
defineBlocks(blocks);