From d7003aa96c1aed9ffefa35ff09679b3e602243fb Mon Sep 17 00:00:00 2001
From: Adam Wagner <wbadam@users.noreply.github.com>
Date: Fri, 19 May 2017 14:56:16 +0300
Subject: Add style automatically to indicate that an element is being dragged
(#9385)
Closes #9223
---
.../client/extensions/DragSourceExtensionConnector.java | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
(limited to 'client')
diff --git a/client/src/main/java/com/vaadin/client/extensions/DragSourceExtensionConnector.java b/client/src/main/java/com/vaadin/client/extensions/DragSourceExtensionConnector.java
index 5c91e91714..75e89f9ca4 100644
--- a/client/src/main/java/com/vaadin/client/extensions/DragSourceExtensionConnector.java
+++ b/client/src/main/java/com/vaadin/client/extensions/DragSourceExtensionConnector.java
@@ -55,6 +55,11 @@ public class DragSourceExtensionConnector extends AbstractExtensionConnector {
*/
protected static final String STYLE_SUFFIX_DRAGSOURCE = "-dragsource";
+ /**
+ * Style suffix for indicating that the element is being dragged.
+ */
+ protected static final String STYLE_SUFFIX_DRAGGED= "-dragged";
+
private static final String STYLE_NAME_DRAGGABLE = "v-draggable";
// Create event listeners
@@ -205,6 +210,11 @@ public class DragSourceExtensionConnector extends AbstractExtensionConnector {
dataMap.get(DragSourceState.DATA_TYPE_TEXT));
}
+ // Set style to indicate the element being dragged
+ Element dragSource = getDraggableElement();
+ dragSource.addClassName(
+ getStylePrimaryName(dragSource) + STYLE_SUFFIX_DRAGGED);
+
// Initiate firing server side dragstart event when there is a
// DragStartListener attached on the server side
if (hasEventListener(DragSourceState.EVENT_DRAGSTART)) {
@@ -363,6 +373,12 @@ public class DragSourceExtensionConnector extends AbstractExtensionConnector {
event.stopPropagation();
return;
}
+
+ // Remove dragged element indicator style
+ Element dragSource = getDraggableElement();
+ dragSource.removeClassName(
+ getStylePrimaryName(dragSource) + STYLE_SUFFIX_DRAGGED);
+
// Initiate server start dragend event when there is a DragEndListener
// attached on the server side
if (hasEventListener(DragSourceState.EVENT_DRAGEND)) {
--
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