suranadira-keyboard/src/keyboard-layout.js

A component for displaying Suranadira texts.

import suranadiraCore from "../../suranadira-core";
const words = suranadiraCore.suranadiraWords.suranadiraWords;

// Get initial layout values
function _getInitialLayout(truthValue) {
  let values = new Set();
  for (let word in words) {
    if (words[word].values[0] === truthValue) {
      values.add(words[word].elements[0][0]);
    }
  }
  return values;
}

// Get next layout
const _getNextLayout = composition => {
  if (composition.length > 3) return;
  let layout = new Set();
  let t = composition;
  let tp = JSON.stringify(t);
  let len = composition.length;
  let a = [];
  for (let word in words) {
    for (let n = 0; n < len; n++) {
      a.push(words[word].elements[n][0]);
    }
    if (tp === JSON.stringify(a)) {
      layout.add(words[word].elements[len][0]);
    }
    a = [];
  }
  return layout;
};

// Update the composition according to the new key ID
// return 1) the new layout and 2) the updated composition
export const updateComposition = (keyID, position, layout, composition) => {
  if (keyID === "") return;
  if (position > -1) {
    // Get keyboard layout by composition
    let index = parseInt(keyID, 10);
    let a = Array.from(layout);
    if (index > a.length - 1) return false;
    composition.push(a[index]);
    layout = _getNextLayout(composition);
  } else {
    // Get initial keyboard layout by truth value
    let truthValue = parseInt(keyID, 10);
    if (truthValue !== 0 && truthValue !== 1) return false;
    layout = _getInitialLayout(truthValue);
  }

  return [layout, composition];
};