logootsropes-crdt/lib/logootsblock.js

Provides several data structures to represent a text in a ropes-like structure and manipulating it

var Utils = require('utils-crdt');
var IdentifierInterval = require('./identifierinterval');
/**
 *
 */

/**
 *
 */
var LogootSBlock = function(id, list) {
	this.id = id || null;
	this.nbElement = list || 0;
	this.mine = false;
};

/**
 *
 */
LogootSBlock.prototype.addBlock = function(pos, length) {
    this.nbElement += length;
    this.id.begin = Math.min(this.id.begin, pos);
    this.id.end = Math.max(this.id.end, pos + length - 1);
};

/**
 *
 */
LogootSBlock.prototype.delBlock = function(begin, end, nbElement) {
	this.nbElement -= nbElement;
};

/**
 *
 */
LogootSBlock.prototype.copy = function() {
	return new LogootSBlock(this.id.copy(), this.nbElement);
};

LogootSBlock.prototype.copyFromJSON = function (block) {
	var base = Utils.copy(block.id.base);
	this.id = new IdentifierInterval(base, block.begin, block.end);
};

/**
 *
 */
LogootSBlock.prototype.toString = function() {
	return '{' + this.nbElement + ',' + this.id.toString() + ', ' + (this.mine ? 'mine' : 'its') + '}';
};

module.exports = LogootSBlock;