Add Upload#setButtonStyleName (#10044)

1 files changed, 31 insertions, 0 deletions

diff --git a/server/src/main/java/com/vaadin/ui/Upload.java b/server/src/main/java/com/vaadin/ui/Upload.java
index cdc78bae35..4812c8ffd5 100644
--- a/server/src/main/java/com/vaadin/ui/Upload.java
+++ b/server/src/main/java/com/vaadin/ui/Upload.java
@@ -101,6 +101,8 @@ public class Upload extends AbstractComponent
 
     private String buttonCaption = "Upload";
 
+    private String buttonStyleName;
+
     /**
      * ProgressListeners to which information about progress is sent during
      * upload
@@ -185,6 +187,9 @@ public class Upload extends AbstractComponent
 
         if (buttonCaption != null) {
             target.addAttribute("buttoncaption", buttonCaption);
+            if (buttonStyleName != null) {
+                target.addAttribute("buttonstylename", buttonStyleName);
+            }
         }
 
         target.addAttribute("nextid", nextid);
@@ -975,6 +980,8 @@ public class Upload extends AbstractComponent
     }
 
     /**
+     * Returns the string rendered into button that fires uploading.
+     *
      * @return String to be rendered into button that fires uploading
      */
     public String getButtonCaption() {
@@ -982,6 +989,16 @@ public class Upload extends AbstractComponent
     }
 
     /**
+     * Returns the stylename rendered into button that fires uploading.
+     *
+     * @return Stylename to be rendered into button that fires uploading
+     * @since 8.2
+     */
+    public String getButtonStyleName() {
+        return buttonStyleName;
+    }
+
+    /**
      * In addition to the actual file chooser, upload components have button
      * that starts actual upload progress. This method is used to set text in
      * that button.
@@ -1009,6 +1026,20 @@ public class Upload extends AbstractComponent
     }
 
     /**
+     * In addition to the actual file chooser, upload components have button
+     * that starts actual upload progress. This method is used to set a stylename
+     * to that button.
+     *
+     * @param buttonStyleName styleName for upload components button.
+     * @see #setButtonCaption(String) about when the button is shown / hidden.
+     * @since 8.2
+     */
+    public void setButtonStyleName(String buttonStyleName) {
+        this.buttonStyleName = buttonStyleName;
+        markAsDirty();
+    }
+
+    /**
      * Forces the upload the send selected file to the server.
      * <p>
      * In case developer wants to use this feature, he/she will most probably