Class CssLiveReload

java.lang.Object

ch.autumo.ui.utils.CssLiveReload

public final class CssLiveReload
extends Object

Development-only live reload for style/application.css.

JavaFX caches parsed style sheets per URL, so re-adding the same URL has no effect. This watcher therefore writes every change to a newly named copy in a temp directory and swaps the scene's style sheet entry — JavaFX then parses the fresh URL and applies the rules immediately. No restart needed while tweaking padding, fonts or colours.

It only activates for a development run: the style sheet must be a file: URL below target/classes and the matching src/main/resources source file must exist. In a packaged application (JAR URL) it does nothing. It is off by default and has to be switched on explicitly with -Dapp.livereload=true on the command line (e.g. in the application's start script).

Java code still needs a rebuild and restart; this covers style changes only.

Method Summary

Modifier and Type	Method	Description
static void	install(Scene scene, String stylesheetUrl, String appId)	Start watching the source file behind stylesheetUrl and keep the scene up to date.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

install

public static void install(Scene scene,
 String stylesheetUrl,
 String appId)

Start watching the source file behind stylesheetUrl and keep the scene up to date.

Parameters:

scene - the live scene whose style sheet entry is swapped

stylesheetUrl - the style/application.css URL that was added to the scene

appId - app ID; one word, no spaces