Added documentation for Empty States

src/main/java/io/jenkins/plugins/designlibrary/EmptyStates.java

@@ -0,0 +1,26 @@
+package io.jenkins.plugins.designlibrary;
+
+import edu.umd.cs.findbugs.annotations.NonNull;
+import hudson.Extension;
+
+@Extension
+public class EmptyStates extends UISample {
+
+    @Override
+    public @NonNull String getDisplayName() {
+        return "Empty States";
+    }
+
+    @Override
+    public String getIconFileName() {
+        return "symbol-trash-bin-outline plugin-ionicons-api";
+    }
+
+    @Override
+    public String getDescription() {
+        return "For when there is no data, no configuration or no plugins installed that support the required feature an empty state can be provided instead.";
+    }
+
+    @Extension
+    public static final class DescriptorImpl extends UISampleDescriptor {}
+}

src/main/resources/io/jenkins/plugins/designlibrary/EmptyStates/index.jelly

@@ -0,0 +1,58 @@
+<!--
+The MIT License
+
+Copyright 2022 Jenkins project contributors
+
+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.
+-->
+
+<?jelly escape-by-default='true'?>
+<j:jelly xmlns:j="jelly:core" xmlns:s="/lib/samples" xmlns:f="/lib/form" xmlns:l="/lib/layout">
+  <s:layout>
+    <s:section>
+      <s:group>
+        <s:preview>
+            <l:notice title="${%noticeTitle}" icon="symbol-plugins" />
+        </s:preview>
+        <s:code file="empty-states.jelly" />
+      </s:group>
+
+      <p class="jdl-paragraph">${%parameters}</p>
+      <ul class="jdl-list">
+        <li>title - ${%parameters.title}</li>
+        <li>icon - ${%parameters.icon}</li>
+      </ul>
+    </s:section>
+
+    <s:section title="${%childSectionTitle}" description="${%descriptionChildContent}">
+      <s:group>
+        <s:preview>
+          <l:notice title="${%childNoticeTitle}" icon="symbol-weather-icon-health-00to19">
+            <button 
+              type="button"
+              class="jenkins-button jenkins-button--secondary">
+              ${%newJobText}
+            </button>
+          </l:notice>
+        </s:preview>
+        <s:code file="empty-states-child-content.jelly" />
+      </s:group>
+    </s:section>
+  </s:layout>
+</j:jelly>

src/main/resources/io/jenkins/plugins/designlibrary/EmptyStates/index.properties

@@ -0,0 +1,10 @@
+noticeTitle=No plugins installed
+parameters=Supported Parameters:
+parameters.title=The message displayed in the notice box
+parameters.icon=The icon shown with the message
+descriptionChildContent=You can also include child content within the notice as a call to action.
+
+
+childSectionTitle=Child content inside notices
+childNoticeTitle=No jobs created
+newJobText=Create your first job

src/main/resources/scss/components/_component-sample.scss

@@ -71,4 +71,10 @@
     animation: none;
     box-shadow: var(--jdl-box-shadow);
   }
+
+  .jenkins-notice {
+    margin-bottom: 0;
+    width: 100%;
+    max-width: 650px;
+  }
 }

src/main/webapp/EmptyStates/empty-states-child-content.jelly

@@ -0,0 +1,8 @@
+<l:notice title="No jobs created" icon="symbol-weather-icon-health-00to19">
+    <button 
+        type="button"
+        class="jenkins-button jenkins-button--secondary">
+        Create your first job
+
+    </button>
+</l:notice>

src/main/webapp/EmptyStates/empty-states.jelly

@@ -0,0 +1 @@
+<l:notice title="No plugins installed" icon="symbol-plugins" />