fix(ui): Prevent unintended text selection and improve component behavior (#5077)

extensions/cornerstone/src/Viewport/OHIFCornerstoneViewport.css

@@ -2,6 +2,11 @@
   width: 100%;
   height: 100%; /* MUST have `height` to prevent resize infinite loop */
   position: relative;
+  /* Prevent text selection on the entire viewport wrapper */
+  user-select: none;
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
 }
 
 .cornerstone-viewport-element {
@@ -16,4 +21,26 @@
   /* Prevents the entire page from getting larger
      when the magnify tool is near the sides/corners of the page */
   overflow: hidden;
+  
+  /* Prevent text selection on the viewport element */
+  user-select: none;
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+}
+
+/* Prevent text selection on overlay elements */
+.noselect {
+  user-select: none;
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+}
+
+/* Ensure all elements within viewport wrapper prevent text selection */
+.viewport-wrapper * {
+  user-select: none;
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
 }

extensions/cornerstone/src/Viewport/OHIFCornerstoneViewport.tsx

@@ -343,7 +343,9 @@ const OHIFCornerstoneViewport = React.memo(
             data-viewportId={viewportId}
             ref={el => {
               elementRef.current = el;
-              if (el) viewportRef.register(el);
+              if (el) {
+                viewportRef.register(el);
+              }
             }}
           ></div>
           <CornerstoneOverlays