Add experimental Plugin Manager UI

core/src/main/java/hudson/model/ManagementLink.java

@@ -174,6 +174,12 @@ public enum Category {
          * Configuration pages that don't fit into a more specific section.
          */
         CONFIGURATION(Messages._ManagementLink_Category_CONFIGURATION()),
+        /**
+         * Configuration pages related to plugin management, including installation,
+         * updates, and administrative actions for maintaining installed plugins.
+         */
+        @Restricted(NoExternalUse.class)
+        PLUGINS(Messages._ManagementLink_Category_PLUGINS()),
         /**
          * Security related options. Useful for plugins providing security related {@code ManagementLink}s (e.g. security realms).
          * Use {@link Category#STATUS} instead if the feature is informational.

core/src/main/java/jenkins/management/PluginsAvailableLink.java

@@ -0,0 +1,69 @@
+/*
+ * The MIT License
+ *
+ * Copyright (c) 2025, Jan Faracik
+ *
+ * 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 jenkins.management;
+
+import edu.umd.cs.findbugs.annotations.NonNull;
+import hudson.Extension;
+import hudson.model.ManagementLink;
+import hudson.security.Permission;
+import jenkins.model.Jenkins;
+import jenkins.model.experimentalflags.NewManageJenkinsUserExperimentalFlag;
+
+@Extension(ordinal = Integer.MAX_VALUE - 1)
+public class PluginsAvailableLink extends ManagementLink {
+
+    @Override
+    public String getIconFileName() {
+        var flagEnabled = new NewManageJenkinsUserExperimentalFlag().getFlagValue();
+
+        if (!flagEnabled) {
+            return null;
+        }
+
+        return "symbol-shopping-bag";
+    }
+
+    @Override
+    public String getDisplayName() {
+        return Messages.PluginsAvailableLink_DisplayName();
+    }
+
+    @Override
+    public String getUrlName() {
+        return "pluginManager/available";
+    }
+
+    @NonNull
+    @Override
+    public Permission getRequiredPermission() {
+        return Jenkins.SYSTEM_READ;
+    }
+
+    @NonNull
+    @Override
+    public Category getCategory() {
+        return Category.PLUGINS;
+    }
+}

core/src/main/java/jenkins/management/PluginsDownloadProgressLink.java

@@ -0,0 +1,75 @@
+/*
+ * The MIT License
+ *
+ * Copyright (c) 2025, Jan Faracik
+ *
+ * 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 jenkins.management;
+
+import edu.umd.cs.findbugs.annotations.NonNull;
+import hudson.Extension;
+import hudson.model.ManagementLink;
+import hudson.security.Permission;
+import jenkins.model.Jenkins;
+import jenkins.model.experimentalflags.NewManageJenkinsUserExperimentalFlag;
+
+@Extension(ordinal = Integer.MAX_VALUE - 3)
+public class PluginsDownloadProgressLink extends ManagementLink {
+
+    @Override
+    public String getIconFileName() {
+        var flagEnabled = new NewManageJenkinsUserExperimentalFlag().getFlagValue();
+
+        if (!flagEnabled) {
+            return null;
+        }
+
+        // Hide the 'Download progress' link if there are
+        // no active downloads or restarts pending
+        if (Jenkins.get().getUpdateCenter().getJobs().isEmpty()) {
+            return null;
+        }
+
+        return "symbol-list";
+    }
+
+    @Override
+    public String getDisplayName() {
+        return Messages.PluginsDownloadProgressLink_DisplayName();
+    }
+
+    @Override
+    public String getUrlName() {
+        return "pluginManager/updates/";
+    }
+
+    @NonNull
+    @Override
+    public Permission getRequiredPermission() {
+        return Jenkins.SYSTEM_READ;
+    }
+
+    @NonNull
+    @Override
+    public Category getCategory() {
+        return Category.PLUGINS;
+    }
+}

core/src/main/java/jenkins/management/PluginsInstalledLink.java

@@ -0,0 +1,69 @@
+/*
+ * The MIT License
+ *
+ * Copyright (c) 2025, Jan Faracik
+ *
+ * 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 jenkins.management;
+
+import edu.umd.cs.findbugs.annotations.NonNull;
+import hudson.Extension;
+import hudson.model.ManagementLink;
+import hudson.security.Permission;
+import jenkins.model.Jenkins;
+import jenkins.model.experimentalflags.NewManageJenkinsUserExperimentalFlag;
+
+@Extension(ordinal = Integer.MAX_VALUE - 2)
+public class PluginsInstalledLink extends ManagementLink {
+
+    @Override
+    public String getIconFileName() {
+        var flagEnabled = new NewManageJenkinsUserExperimentalFlag().getFlagValue();
+
+        if (!flagEnabled) {
+            return null;
+        }
+
+        return "symbol-plugins";
+    }
+
+    @Override
+    public String getDisplayName() {
+        return Messages.PluginsInstalledLink_DisplayName();
+    }
+
+    @Override
+    public String getUrlName() {
+        return "pluginManager/installed";
+    }
+
+    @NonNull
+    @Override
+    public Permission getRequiredPermission() {
+        return Jenkins.SYSTEM_READ;
+    }
+
+    @NonNull
+    @Override
+    public Category getCategory() {
+        return Category.PLUGINS;
+    }
+}

core/src/main/java/jenkins/management/PluginsLink.java

@@ -30,6 +30,7 @@
 import hudson.model.UpdateCenter;
 import hudson.security.Permission;
 import jenkins.model.Jenkins;
+import jenkins.model.experimentalflags.NewManageJenkinsUserExperimentalFlag;
 import org.jenkinsci.Symbol;
 
 /**
@@ -40,6 +41,12 @@
 
     @Override
     public String getIconFileName() {
+        var flagEnabled = new NewManageJenkinsUserExperimentalFlag().getFlagValue();
+
+        if (flagEnabled) {
+            return null;
+        }
+
         return "plugin.svg";
     }
 

core/src/main/java/jenkins/management/PluginsUpdatesLink.java

@@ -0,0 +1,76 @@
+/*
+ * The MIT License
+ *
+ * Copyright (c) 2025, Jan Faracik
+ *
+ * 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 jenkins.management;
+
+import edu.umd.cs.findbugs.annotations.NonNull;
+import hudson.Extension;
+import hudson.model.ManagementLink;
+import hudson.model.UpdateCenter;
+import hudson.security.Permission;
+import jenkins.model.Jenkins;
+import jenkins.model.experimentalflags.NewManageJenkinsUserExperimentalFlag;
+
+@Extension(ordinal = Integer.MAX_VALUE)
+public class PluginsUpdatesLink extends ManagementLink {
+
+    @Override
+    public String getIconFileName() {
+        var flagEnabled = new NewManageJenkinsUserExperimentalFlag().getFlagValue();
+
+        if (!flagEnabled) {
+            return null;
+        }
+
+        return "symbol-download";
+    }
+
+    @Override
+    public String getDisplayName() {
+        return Messages.PluginsUpdatesLink_DisplayName();
+    }
+
+    @Override
+    public String getUrlName() {
+        return "pluginManager";
+    }
+
+    @NonNull
+    @Override
+    public Permission getRequiredPermission() {
+        return Jenkins.SYSTEM_READ;
+    }
+
+    @NonNull
+    @Override
+    public Category getCategory() {
+        return Category.PLUGINS;
+    }
+
+    @Override
+    public Badge getBadge() {
+        final UpdateCenter updateCenter = Jenkins.get().getUpdateCenter();
+        return updateCenter.getBadge();
+    }
+}