design/designer-base/src/main/java/com/fr/design/jxbrowser/JxEngine.java

package com.fr.design.jxbrowser;

import com.fr.design.DesignerEnvManager;
import com.fr.design.ui.ModernUIConstants;
import com.fr.log.FineLoggerFactory;
import com.fr.stable.CommonUtils;
import com.fr.value.ClearableLazyValue;
import com.fr.web.struct.AssembleComponent;
import com.teamdev.jxbrowser.engine.ChromiumBinariesExtractionException;
import com.teamdev.jxbrowser.engine.Engine;
import com.teamdev.jxbrowser.engine.EngineOptions;
import com.teamdev.jxbrowser.engine.RenderingMode;
import com.teamdev.jxbrowser.engine.event.EngineCrashed;
import com.teamdev.jxbrowser.net.Network;
import com.teamdev.jxbrowser.net.Scheme;
import com.teamdev.jxbrowser.net.callback.VerifyCertificateCallback;
import com.teamdev.jxbrowser.os.Environment;
import org.jetbrains.annotations.NotNull;

import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Collections;
import java.util.Map;

/**
 * 可重复启动的 Jxbrowser 引擎
 * 手动创建的引擎，应当自己负责管理声明周期 {@link #newInstance()}
 * 单例的引擎，由系统管理生命周期，使用后仅需清理browser和map等数据
 * {@link #getEngine()} 和 {@link #getPublicEngineInstance()}
 *
 * @author vito
 * @since 11.0
 * Created on 2023/6/8
 */
public class JxEngine {

    private static final JxEngine INSTANCE = new JxEngine();

    private AssembleComponent component;
    private Map<String, String> parameterMap = Collections.emptyMap();


    private final ClearableLazyValue<Engine> ENGINE = ClearableLazyValue.create(() -> {
        EngineOptions.Builder builder = EngineOptions
                .newBuilder(RenderingMode.HARDWARE_ACCELERATED)
                .addSwitch("--disable-google-traffic")
                .addScheme(Scheme.of(ModernUIConstants.EMB_TAG),
                        new NxInterceptRequestCallback(this::getComponent, this::getParameterMap));
        Engine engine;
        try {
            engine = Engine.newInstance(builder.build());
        } catch (ChromiumBinariesExtractionException e) {
            Path chromiumDir = Paths.get(System.getProperty("jxbrowser.chromium.dir", Environment.defaultChromiumDir().toString()));
            if (CommonUtils.deleteFile(chromiumDir.toFile())) {
                FineLoggerFactory.getLogger().warn("[jxbrowser]Retry start engine success after delete chromium dir manually: {}", chromiumDir);
                engine = Engine.newInstance(builder.build());
            } else {
                throw e;
            }
        }
        engine.on(EngineCrashed.class, (event) -> {
            FineLoggerFactory.getLogger().error("jxBrowser engine crashed with exitCode: {}", event.exitCode());
            event.engine().close();
        });
        if (DesignerEnvManager.getEnvManager().isOpenDebug()) {
            // 调试模式下，禁止HTTPS证书验证，使得可以正常访问商城测试服务器等
            Network network = engine.network();
            network.set(VerifyCertificateCallback.class, params -> VerifyCertificateCallback.Response.valid());
        }
        return engine;
    });

    public Map<String, String> getParameterMap() {
        return Collections.unmodifiableMap(parameterMap);
    }

    public void setMap(Map<String, String> parameterMap) {
        if (parameterMap == null) {
            return;
        }
        this.parameterMap = parameterMap;
    }

    /**
     * 清理map
     */
    public void clearMap() {
        this.parameterMap = Collections.emptyMap();
    }

    public AssembleComponent getComponent() {
        return component;
    }

    public void setComponent(AssembleComponent component) {
        this.component = component;
    }

    /**
     * 清理component
     */
    public void clearComponent() {
        this.component = null;
    }

    /**
     * 获取单例引擎包装，能够更新渲染
     * 从单例获取的引擎不用负责关闭，
     * 应用系统管理声明周期
     *
     * @return jxbrowser 引擎包装类
     */
    public static JxEngine getInstance() {
        return INSTANCE;
    }

    /**
     * 获取公共引擎，公共引擎使用后不用关闭引擎，但需要自己管理 browser。
     * 应用系统管理引擎生命周期
     *
     * @return 引擎
     */
    @NotNull
    public Engine getEngine() {
        return ENGINE.getValue();
    }

    /**
     * 关闭引擎
     */
    public void close() {
        ENGINE.getValue().close();
        ENGINE.drop();
    }


    /**
     * 获取公共引擎，公共引擎使用后不用关闭引擎，但需要自己管理 browser。
     * 应用系统管理引擎生命周期
     *
     * @return 引擎
     */
    public static Engine getPublicEngineInstance() {
        return getInstance().ENGINE.getValue();
    }

    /**
     * 创建一个新的引擎，创建引擎使用后需负责关闭引擎
     * 但可以独立使用 map 和 component
     *
     * @return 引擎
     */
    public static JxEngine newInstance() {
        return new JxEngine();
    }
}