Fixed Potential NPE on ImageViewer.

kevzlou7979 · kevzlou7979 · commit f99c98c5c25e · 2022-07-22T12:42:15.000+08:00
diff --git a/src/main/java/gwt/material/design/incubator/client/viewer/ImageViewer.java b/src/main/java/gwt/material/design/incubator/client/viewer/ImageViewer.java
@@ -46,11 +46,15 @@ public void load(Element element) {
     }
 
     public void destroy() {
-        viewer.destroy();
+        if (viewer != null) {
+            viewer.destroy();
+        }
     }
 
     public void update() {
-        viewer.update();
+        if (viewer != null) {
+            viewer.update();
+        }
     }
 
     public ViewerOptions getOptions() {

Original file line number	Diff line number	Diff line change
`@@ -46,11 +46,15 @@ public void load(Element element) {`
`46`	`46`	`}`
`47`	`47`
`48`	`48`	`public void destroy() {`
`49`		`- viewer.destroy();`
	`49`	`+ if (viewer != null) {`
	`50`	`+ viewer.destroy();`
	`51`	`+ }`
`50`	`52`	`}`
`51`	`53`
`52`	`54`	`public void update() {`
`53`		`- viewer.update();`
	`55`	`+ if (viewer != null) {`
	`56`	`+ viewer.update();`
	`57`	`+ }`
`54`	`58`	`}`
`55`	`59`
`56`	`60`	`public ViewerOptions getOptions() {`