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'use strict';
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function isString(variable) {
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return typeof variable === 'string' || variable instanceof String;
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}
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function isNumber(variable) {
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return typeof variable === 'number' || variable instanceof Number;
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}
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function isBoolean(variable) {
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return typeof variable === 'boolean';
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}
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function isArray(variable) {
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return Array.isArray(variable);
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}
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function isFunction(variable) {
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return typeof variable === 'function';
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}
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function isObject(variable) {
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return variable !== null && typeof variable === 'object';
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}
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function isNull(variable) {
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return variable === null;
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}
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function isUndefined(variable) {
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return variable === undefined;
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}
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function pack() {
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var result = {};
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for (var i = 0, l = arguments.length; i < l; i++) {
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var obj = arguments[i];
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if (obj) {
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for (var key in obj) {
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if (obj.hasOwnProperty(key)) {
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result[key] = obj[key];
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}
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}
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}
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}
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return result;
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}
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function offsetVector(vector, x, y) {
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switch (vector.type) {
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case 'ellipse':
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case 'rect':
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vector.x += x;
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vector.y += y;
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break;
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case 'line':
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vector.x1 += x;
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vector.x2 += x;
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vector.y1 += y;
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vector.y2 += y;
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break;
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case 'polyline':
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for (var i = 0, l = vector.points.length; i < l; i++) {
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vector.points[i].x += x;
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vector.points[i].y += y;
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}
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break;
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}
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}
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function fontStringify(key, val) {
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if (key === 'font') {
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return 'font';
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}
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return val;
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}
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function getNodeId(node) {
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if (node.id) {
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return node.id;
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}
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if (isArray(node.text)) {
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for (var i = 0, l = node.text.length; i < l; i++) {
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var n = node.text[i];
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var nodeId = getNodeId(n);
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if (nodeId) {
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return nodeId;
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}
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}
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}
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return null;
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}
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module.exports = {
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isString: isString,
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isNumber: isNumber,
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isBoolean: isBoolean,
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isArray: isArray,
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isFunction: isFunction,
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isObject: isObject,
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isNull: isNull,
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isUndefined: isUndefined,
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pack: pack,
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fontStringify: fontStringify,
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offsetVector: offsetVector,
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getNodeId: getNodeId
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};
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