@kitware/vtk.js/Common/DataModel/Collection.js

Visualization Toolkit for the Web

import { m as macro } from '../../macros2.js';

const {
  vtkErrorMacro
} = macro;

// ----------------------------------------------------------------------------
// vtkCollection methods
// ----------------------------------------------------------------------------

function vtkCollection(publicAPI, model) {
  // Set our className
  model.classHierarchy.push('vtkCollection');
  publicAPI.addItem = item => {
    model.collection.push(item);
    publicAPI.modified();
  };
  publicAPI.insertItem = (idx, item) => {
    if (idx < 0 || model.collection.length < idx) {
      vtkErrorMacro('idx out of bounds for insertion.');
    }
    model.collection.splice(idx, 0, item);
    publicAPI.modified();
  };
  publicAPI.replaceItem = (idx, item) => {
    model.collection.splice(idx, 1, item);
    publicAPI.modified();
  };
  publicAPI.removeItem = inValue => {
    const idx = typeof inValue === 'number' ? inValue : model.collection.indexOf(inValue);
    if (idx >= 0 && idx < model.collection.length) {
      model.collection.splice(idx, 1);
      publicAPI.modified();
    } else {
      vtkErrorMacro('idx out of bounds for removeItem.');
    }
  };
  publicAPI.removeAllItems = () => {
    model.collection = [];
    publicAPI.modified();
  };
  publicAPI.isItemPresent = item => model.collection.includes(item);
  publicAPI.getNumberOfItems = () => model.collection.length;
  publicAPI.empty = () => model.collection.length === 0;
  publicAPI.getItem = idx => model.collection[idx];
  publicAPI.forEach = ftor => {
    model.collection.forEach(ftor);
    // Call modified() for the collection, since ftor could have modified the elements.
    publicAPI.updateMTimeWithElements();
  };
  publicAPI.reduce = (ftor, initialValue) => model.collection.reduce(ftor, initialValue);
  publicAPI.map = ftor => model.collection.map(ftor);
  publicAPI.updateMTimeWithElements = () => {
    let maxMTimeOfItems = 0; // we expect time values to be positive numbers
    for (let i = 0; i < model.collection.length; ++i) {
      const elem = model.collection[i];
      maxMTimeOfItems = Math.max(maxMTimeOfItems, elem.getMTime());
    }
    if (maxMTimeOfItems > publicAPI.getMTime()) {
      publicAPI.modified();
    }
  };
}

// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------

const DEFAULT_VALUES = {
  collection: []
};

// ----------------------------------------------------------------------------

function extend(publicAPI, model, initialValues = {}) {
  Object.assign(model, DEFAULT_VALUES, initialValues);

  // Object methods
  macro.obj(publicAPI, model);

  // Object specific methods
  vtkCollection(publicAPI, model);
}

// ----------------------------------------------------------------------------

const newInstance = macro.newInstance(extend, 'vtkCollection');

// ----------------------------------------------------------------------------

var index = {
  newInstance,
  extend
};

export { index as default, extend, newInstance };