56 lines
1.7 KiB
Java
56 lines
1.7 KiB
Java
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package org.openautonomousconnection.luascript.fx;
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import javafx.scene.web.WebEngine;
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import org.openautonomousconnection.luascript.hosts.ResourceHost;
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import java.io.BufferedReader;
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import java.io.InputStreamReader;
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import java.net.URL;
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import java.net.URLConnection;
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import java.nio.charset.StandardCharsets;
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import java.util.Objects;
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/**
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* ResourceHost that loads script src via URLConnection.
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*
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* <p>Relative URLs are resolved against the current WebEngine location.</p>
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*/
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public final class FxWebViewResourceHost implements ResourceHost {
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private final WebEngine engine;
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/**
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* Creates a new resource host.
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*
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* @param engine web engine
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*/
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public FxWebViewResourceHost(WebEngine engine) {
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this.engine = Objects.requireNonNull(engine, "engine");
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}
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@Override
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public String readText(String src) throws Exception {
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Objects.requireNonNull(src, "src");
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String trimmed = src.trim();
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if (trimmed.isEmpty()) throw new IllegalArgumentException("src is empty");
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String base = FxThreadBridge.callAndWait(engine::getLocation);
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URL url = (base == null || base.isBlank())
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? new URL(trimmed)
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: new URL(new URL(base), trimmed);
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URLConnection con = url.openConnection();
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con.setUseCaches(false);
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try (BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream(), StandardCharsets.UTF_8))) {
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StringBuilder sb = new StringBuilder(4096);
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char[] buf = new char[8192];
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int r;
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while ((r = br.read(buf)) >= 0) {
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sb.append(buf, 0, r);
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}
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return sb.toString();
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}
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}
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}
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