Switching to modern auto-completion text box

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

@@ -23,6 +23,8 @@
  */
 package hudson.model;
 
+import org.kohsuke.stapler.QueryParameter;
+
 /**
  * {@link Descriptor} for {@link View}.
  *
@@ -58,4 +60,13 @@ public abstract class ViewDescriptor extends Descriptor<View> {
 
     protected ViewDescriptor() {
     }
+
+    public AutoCompletionCandidates doAutoCompleteCopyNewItemFrom(@QueryParameter String value) {
+        AutoCompletionCandidates r = new AutoCompletionCandidates();
+        for (String s : Hudson.getInstance().getTopLevelItemNames()) {
+            if (s.startsWith(value))
+                r.add(s);
+        }
+        return r;
+    }
 }

core/src/main/resources/hudson/model/View/newJob.jelly

@@ -31,7 +31,7 @@ THE SOFTWARE.
     <st:include page="sidepanel.jelly" />
     <l:main-panel>
       <j:invokeStatic var="jobs" className="hudson.model.Items" method="all" />
-      <n:form nameTitle="${%Job name}" copyTitle="${%Copy existing job}" copyNames="${app.topLevelItemNames}"
+      <n:form nameTitle="${%Job name}" copyTitle="${%Copy existing job}" showCopyOption="${!empty(app.itemMap)}"
               descriptors="${jobs}" checkUrl="checkJobName" xmlns:n="/lib/hudson/newFromList" />
     </l:main-panel>
   </l:layout>

core/src/main/resources/lib/hudson/newFromList/form.jelly

@@ -53,15 +53,24 @@ THE SOFTWARE.
         <st:include page="newInstanceDetail.jelly" it="${descriptor}" />
       </s:entry>
     </j:forEach>
-    <j:if test="${!empty(attrs.copyNames)}">
+    <j:if test="${!empty(attrs.copyNames) or attrs.showCopyOption}">
       <s:block>
-        <input type="radio" name="mode" value="copy" onchange="updateOk(this.form)" onclick="updateOk(this.form)" />
+        <input type="radio" id="copy" name="mode" value="copy" onchange="updateOk(this.form)" onclick="updateOk(this.form)" />
         <st:nbsp/>
         <label class="attach-previous"><b>${attrs.copyTitle}</b></label>
       </s:block>
       <s:entry>
         ${%Copy from}
-        <s:editableComboBox id="from" name="from" items="${attrs.copyNames}" />
+        <j:choose>
+          <j:when test="${attrs.copyNames}">
+            <!-- deprecated as of 1.402. -->
+            <s:editableComboBox id="from" name="from" items="${attrs.copyNames}" />
+          </j:when>
+          <j:otherwise>
+            <j:set var="descriptor" value="${it.descriptor}" />
+            <s:textbox id="from" name="from" field="copyNewItemFrom" style="width:40em" onfocus="$('copy').click()" />
+          </j:otherwise>
+        </j:choose>
       </s:entry>
     </j:if>