blueocean-plugin/blueocean-commons/src/main/java/io/jenkins/blueocean/commons/PageStatePreloader.java

62 lines
2.4 KiB
Java

/*
* The MIT License
*
* Copyright (c) 2016, CloudBees, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package io.jenkins.blueocean.commons;
import hudson.ExtensionList;
import org.apache.tools.ant.ExtensionPoint;
import javax.annotation.CheckForNull;
import javax.annotation.Nonnull;
/**
* Page state "preloader" extension point.
* <p>
* Allows the loading page's JavaScript blueocean global scope to
* be pre-populated with data that we know the page is going to need, thereby
* providing a mechanism for eliminating the request overhead for that data.
*
* @author <a href="mailto:tom.fennelly@gmail.com">tom.fennelly@gmail.com</a>
*/
public abstract class PageStatePreloader extends ExtensionPoint {
/**
* Get the JavaScript object graph path at shiwh the state is to be stored.
* @return The JavaScript object graph path at shiwh the state is to be stored.
*/
@Nonnull
public abstract String getStatePropertyPath();
/**
* Get the state JSON to be set in the page's JavaScript blueocean global scope.
* @return The state JSON to be set in the page's JavaScript blueocean global
* scope, or {@code null} if no data is to be set of this page.
*/
@CheckForNull
public abstract String getStateJson();
public static ExtensionList<PageStatePreloader> all() {
return ExtensionList.lookup(PageStatePreloader.class);
}
}