优化更新日志展示功能 (#4703)

1. 如果检测到是降级更新，则不展示更新日志；
2. 如果检测到最新更新日志和最新版本不匹配，则不显示更新日志；
3. 展示当前版本与 `nowchange`/`nowpreview` 之间的所有更新日志，而不只展示一个版本的日志。

HMCL/src/main/java/org/jackhuang/hmcl/ui/UpgradeDialog.java

@@ -22,17 +22,24 @@ import com.jfoenix.controls.JFXDialogLayout;
 import javafx.scene.control.Label;
 import javafx.scene.control.ProgressIndicator;
 import javafx.scene.control.ScrollPane;
+import org.jackhuang.hmcl.Metadata;
 import org.jackhuang.hmcl.task.Schedulers;
 import org.jackhuang.hmcl.task.Task;
 import org.jackhuang.hmcl.ui.construct.DialogCloseEvent;
 import org.jackhuang.hmcl.ui.construct.JFXHyperlink;
 import org.jackhuang.hmcl.upgrade.RemoteVersion;
+import org.jackhuang.hmcl.util.versioning.VersionNumber;
+import org.jetbrains.annotations.Nullable;
 import org.jsoup.Jsoup;
 import org.jsoup.nodes.Document;
+import org.jsoup.nodes.Element;
 import org.jsoup.nodes.Node;
+import org.jsoup.nodes.TextNode;
 
 import java.io.IOException;
 import java.net.URL;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 import static org.jackhuang.hmcl.Metadata.CHANGELOG_URL;
 import static org.jackhuang.hmcl.ui.FXUtils.onEscPressed;
@@ -40,6 +47,26 @@ import static org.jackhuang.hmcl.util.i18n.I18n.i18n;
 import static org.jackhuang.hmcl.util.logging.Logger.LOG;
 
 public final class UpgradeDialog extends JFXDialogLayout {
+
+    private static final Pattern CHANGELOG_TITLE_PATTERN = Pattern.compile("HMCL (?<version>\\d(?:\\.\\d+)+)");
+
+    private static @Nullable VersionNumber extractVersionNumber(Node node) {
+        String text;
+        if (node instanceof Element element) {
+            text = element.text();
+        } else if (node instanceof TextNode textNode) {
+            text = textNode.text();
+        } else {
+            return null;
+        }
+
+        Matcher matcher = CHANGELOG_TITLE_PATTERN.matcher(text);
+        if (matcher.find())
+            return VersionNumber.asVersion(matcher.group("version"));
+        else
+            return null;
+    }
+
     public UpgradeDialog(RemoteVersion remoteVersion, Runnable updateRunnable) {
         maxWidthProperty().bind(Controllers.getScene().widthProperty().multiply(0.7));
         maxHeightProperty().bind(Controllers.getScene().heightProperty().multiply(0.7));
@@ -49,7 +76,14 @@ public final class UpgradeDialog extends JFXDialogLayout {
 
         String url = CHANGELOG_URL + remoteVersion.getChannel().channelName + ".html";
         boolean isPreview = remoteVersion.isPreview();
+
         Task.supplyAsync(Schedulers.io(), () -> {
+            VersionNumber targetVersion = VersionNumber.asVersion(remoteVersion.getVersion());
+            VersionNumber currentVersion = VersionNumber.asVersion(Metadata.VERSION);
+            if (targetVersion.compareTo(currentVersion) <= 0) {
+                return null;
+            }
+
             Document document = Jsoup.parse(new URL(url), 30 * 1000);
             String id = null;
             Node node = null;
@@ -65,14 +99,26 @@ public final class UpgradeDialog extends JFXDialogLayout {
             if (node == null || !"h1".equals(node.nodeName()))
                 throw new IOException("Cannot find current changelog in document");
 
+            VersionNumber changelogVersion = extractVersionNumber(node);
+            if (changelogVersion == null)
+                throw new IOException("Cannot find current changelog in document. The node: " + node);
+
+            if (!targetVersion.equals(changelogVersion)) {
+                LOG.warning("The changelog has not been updated yet. Expected: " + targetVersion + ", Actual: " + changelogVersion);
+                return null;
+            }
+
             HTMLRenderer renderer = new HTMLRenderer(uri -> {
                 LOG.info("Open link: " + uri);
                 FXUtils.openLink(uri.toString());
             });
 
             do {
-                if ("h1".equals(node.nodeName()) && !id.equals(node.attr("id"))) {
+                if ("h1".equals(node.nodeName())) {
-                    break;
+                    changelogVersion = extractVersionNumber(node);
+                    if (changelogVersion == null || changelogVersion.compareTo(currentVersion) <= 0) {
+                        break;
+                    }
                 }
                 renderer.appendNode(node);
                 node = node.nextSibling();
@@ -82,10 +128,14 @@ public final class UpgradeDialog extends JFXDialogLayout {
             return renderer.render();
         }).whenComplete(Schedulers.javafx(), (result, exception) -> {
             if (exception == null) {
-                ScrollPane scrollPane = new ScrollPane(result);
+                if (result != null) {
-                scrollPane.setFitToWidth(true);
+                    ScrollPane scrollPane = new ScrollPane(result);
-                FXUtils.smoothScrolling(scrollPane);
+                    scrollPane.setFitToWidth(true);
-                setBody(scrollPane);
+                    FXUtils.smoothScrolling(scrollPane);
+                    setBody(scrollPane);
+                } else {
+                    setBody();
+                }
             } else {
                 LOG.warning("Failed to load update log, trying to open it in browser");
                 FXUtils.openLink(url);