IDEA-241574 Fix empty state text for find popup

IDEA-264313 Find in Files: dots in empty text

(cherry picked from commit 1a5b35e821d3f176a108325d2c1de737b75a78fa)

IJ-CR-7066

GitOrigin-RevId: f792b63c22717824ec8a63fe2c7effc43b075e10

platform/analysis-impl/resources/messages/FindBundle.properties

@@ -59,8 +59,9 @@ find.occurrences.search.string=Occurrences of ''{0}''{1, choice,\
   4# Everywhere Except Comments|\
   5# Everywhere Except Comments and String Literals\
 }
-message.nothingFound=Nothing found
-message.nothingFound.with.problem=Nothing found ({0})
+message.nothingFound=Nothing found.
+message.nothingFound.with.problem=Nothing found ({0}).
+message.type.search.query=Type search query to find in files.
 message.nothingFound.used.option=Search option used: {0}
 message.nothingFound.used.options=Search options used:
 emptyText.used.option={0}

platform/lang-impl/src/com/intellij/find/impl/FindPopupPanel.java

@@ -1336,12 +1336,15 @@ public class FindPopupPanel extends JBPanel<FindPopupPanel> implements FindUI {
     myInfoLabel.setText(null);
   }
 
-  private void showEmptyText(@Nullable String message) {
+  private void showEmptyText(@Nullable @NlsContexts.StatusText String message) {
     StatusText emptyText = myResultsPreviewTable.getEmptyText();
     emptyText.clear();
-    emptyText.setText(message != null ? FindBundle.message("message.nothingFound.with.problem", message)
-                                      : FindBundle.message("message.nothingFound"));
     FindModel model = myHelper.getModel();
+    if (StringUtil.isEmpty(model.getStringToFind())) {
+      emptyText.setText(FindBundle.message("message.type.search.query"));
+    } else {
+      emptyText.setText(message != null ? message+"." : FindBundle.message("message.nothingFound"));
+    }
     if (mySelectedScope == FindPopupScopeUIImpl.DIRECTORY && !model.isWithSubdirectories()) {
       emptyText.appendSecondaryText(FindBundle.message("find.recursively.hint"),
                                                                SimpleTextAttributes.LINK_ATTRIBUTES,