polygonjs-engine/dist/src/engine/params/NodePath.js

node-based webgl 3D engine https://polygonjs.com

import {TypedPathParam} from "./_BasePath";
import {CoreWalker} from "../../core/Walker";
import {ParamType as ParamType2} from "../poly/ParamType";
import {ParamEvent as ParamEvent2} from "../poly/ParamEvent";
import {TypedNodePathParamValue} from "../../core/Walker";
export class NodePathParam extends TypedPathParam {
  static type() {
    return ParamType2.NODE_PATH;
  }
  initialize_param() {
    this._value = new TypedNodePathParamValue();
  }
  get default_value_serialized() {
    return this.default_value;
  }
  get raw_input_serialized() {
    return `${this._raw_input}`;
  }
  get value_serialized() {
    return `${this.value}`;
  }
  _copy_value(param) {
    this.set(param.value_serialized);
  }
  static are_raw_input_equal(raw_input1, raw_input2) {
    return raw_input1 == raw_input2;
  }
  static are_values_equal(val1, val2) {
    return val1 == val2;
  }
  get is_default() {
    return this._raw_input == this.default_value;
  }
  setNode(node) {
    this.set(node.fullPath());
  }
  process_raw_input() {
    if (this._value.path() != this._raw_input) {
      this._value.set_path(this._raw_input);
      this.find_target();
      this.setDirty();
      this.emitController.emit(ParamEvent2.VALUE_UPDATED);
    }
  }
  async process_computation() {
    this.find_target();
  }
  find_target() {
    if (!this.node) {
      return;
    }
    const path = this._raw_input;
    let node = null;
    const path_non_empty = path != null && path !== "";
    this.scene().referencesController.reset_reference_from_param(this);
    this.decomposed_path.reset();
    if (path_non_empty) {
      node = CoreWalker.find_node(this.node, path, this.decomposed_path);
    }
    const current_found_entity = this._value.node();
    const newly_found_entity = node;
    this.scene().referencesController.set_named_nodes_from_param(this);
    if (node) {
      this.scene().referencesController.set_reference_from_param(this, node);
    }
    if (current_found_entity?.graphNodeId() !== newly_found_entity?.graphNodeId()) {
      const dependent_on_found_node = this.options.dependent_on_found_node();
      const previously_found_node = this._value.node();
      if (previously_found_node) {
        if (dependent_on_found_node) {
          this.removeGraphInput(previously_found_node);
        } else {
        }
      }
      if (node) {
        this._assign_found_node(node);
      } else {
        this._value.set_node(null);
      }
      this.options.execute_callback();
    }
    this.removeDirtyState();
  }
  _assign_found_node(node) {
    const dependent_on_found_node = this.options.dependent_on_found_node();
    if (this._is_node_expected_context(node)) {
      if (this._is_node_expected_type(node)) {
        this._value.set_node(node);
        if (dependent_on_found_node) {
          this.addGraphInput(node);
        }
      } else {
        this.states.error.set(`node type is ${node.type()} but the params expects one of ${(this._expected_node_types() || []).join(", ")}`);
      }
    } else {
      this.states.error.set(`node context is ${node.nodeContext()} but the params expects a ${this._expected_context()}`);
    }
  }
  _expected_context() {
    return this.options.node_selection_context();
  }
  _is_node_expected_context(node) {
    const expected_context = this._expected_context();
    if (expected_context == null) {
      return true;
    }
    const node_context = node.parent()?.childrenController?.context;
    return expected_context == node_context;
  }
  _expected_node_types() {
    return this.options.node_selection_types();
  }
  _is_node_expected_type(node) {
    const expected_types = this._expected_node_types();
    if (expected_types == null) {
      return true;
    }
    return expected_types?.includes(node.type());
  }
  notify_path_rebuild_required(node) {
    this.decomposed_path.update_from_name_change(node);
    const new_path = this.decomposed_path.to_path();
    this.set(new_path);
  }
  notify_target_param_owner_params_updated(node) {
    this.setDirty();
  }
}