@maxgraph/core
Version:
maxGraph is a fully client side JavaScript diagramming library that uses SVG and HTML for rendering.
116 lines (112 loc) • 3.15 kB
JavaScript
/*
Copyright 2021-present The maxGraph project Contributors
Copyright (c) 2006-2015, JGraph Ltd
Copyright (c) 2006-2015, Gaudenz Alder
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/**
* Converts relative and absolute URLs to absolute URLs with protocol and domain.
*/
class UrlConverter {
constructor() {
/**
* Specifies if the converter is enabled. Default is true.
*/
this.enabled = true;
/**
* Specifies the base URL to be used as a prefix for relative URLs.
*/
this.baseUrl = null;
/**
* Specifies the base domain to be used as a prefix for absolute URLs.
*/
this.baseDomain = null;
// Empty constructor
}
/**
* Private helper function to update the base URL.
*/
updateBaseUrl() {
this.baseDomain = `${location.protocol}//${location.host}`;
this.baseUrl = this.baseDomain + location.pathname;
const tmp = this.baseUrl.lastIndexOf('/');
// Strips filename etc
if (tmp > 0) {
this.baseUrl = this.baseUrl.substring(0, tmp + 1);
}
}
/**
* Returns <enabled>.
*/
isEnabled() {
return this.enabled;
}
/**
* Sets <enabled>.
*/
setEnabled(value) {
this.enabled = value;
}
/**
* Returns <baseUrl>.
*/
getBaseUrl() {
return this.baseUrl;
}
/**
* Sets <baseUrl>.
*/
setBaseUrl(value) {
this.baseUrl = value;
}
/**
* Returns <baseDomain>.
*/
getBaseDomain() {
return this.baseDomain;
}
/**
* Sets <baseDomain>.
*/
setBaseDomain(value) {
this.baseDomain = value;
}
/**
* Returns true if the given URL is relative.
*/
isRelativeUrl(url) {
return (url &&
url.substring(0, 2) !== '//' &&
url.substring(0, 7) !== 'http://' &&
url.substring(0, 8) !== 'https://' &&
url.substring(0, 10) !== 'data:image' &&
url.substring(0, 7) !== 'file://');
}
/**
* Converts the given URL to an absolute URL with protol and domain.
* Relative URLs are first converted to absolute URLs.
*/
convert(url) {
if (this.isEnabled() && this.isRelativeUrl(url)) {
if (!this.getBaseUrl()) {
this.updateBaseUrl();
}
if (url.charAt(0) === '/') {
url = this.getBaseDomain() + url;
}
else {
url = this.getBaseUrl() + url;
}
}
return url;
}
}
export default UrlConverter;