Duplicate of rc/core-make-widowWidth-available-in-session

src/main/java/org/commcare/core/process/CommCareInstanceInitializer.java

@@ -244,11 +244,15 @@ protected InstanceRoot setupSessionData(ExternalDataInstance instance) {
         TreeElement root =
                 SessionInstanceBuilder.getSessionInstance(sessionWrapper.getFrame(), getDeviceId(),
                         getVersionString(), getCurrentDrift(), u.getUsername(), u.getUniqueId(),
-                        u.getProperties());
+                        u.getProperties(), getWindowWidth());
         root.setParent(instance.getBase());
         return new ConcreteInstanceRoot(root);
     }
 
+    protected String getWindowWidth() {
+        return sessionWrapper.getWindowWidth();
+    }
+
     protected long getCurrentDrift() {
         return 0;
     }

src/main/java/org/commcare/modern/session/SessionWrapper.java

@@ -24,17 +24,22 @@ public class SessionWrapper extends CommCareSession implements SessionWrapperInt
     final protected CommCarePlatform mPlatform;
     protected CommCareInstanceInitializer initializer;
     protected RemoteInstanceFetcher remoteInstanceFetcher;
+    /**
+     * A string representing the width of the user's screen in pixels.
+     * To be used in a display condition determining what content to show to the user.
+     */
+    private String windowWidth;
 
     public SessionWrapper(CommCareSession session, CommCarePlatform platform, UserSandbox sandbox,
-            RemoteInstanceFetcher remoteInstanceFetcher) {
-        this(platform, sandbox, remoteInstanceFetcher);
+            RemoteInstanceFetcher remoteInstanceFetcher, String windowWidth) {
+        this(platform, sandbox, remoteInstanceFetcher, windowWidth);
         this.frame = session.getFrame();
         this.setFrameStack(session.getFrameStack());
     }
 
 
-    public SessionWrapper(CommCareSession session, CommCarePlatform platform, UserSandbox sandbox) {
-        this(session, platform, sandbox, null);
+    public SessionWrapper(CommCareSession session, CommCarePlatform platform, UserSandbox sandbox, String windowWidth) {
+        this(session, platform, sandbox, null, windowWidth);
     }
 
     public SessionWrapper(CommCarePlatform platform, UserSandbox sandbox) {
@@ -43,11 +48,12 @@ public SessionWrapper(CommCarePlatform platform, UserSandbox sandbox) {
         this.mPlatform = platform;
     }
 
-    public SessionWrapper(CommCarePlatform platform, UserSandbox sandbox, RemoteInstanceFetcher remoteInstanceFetcher) {
+    public SessionWrapper(CommCarePlatform platform, UserSandbox sandbox, RemoteInstanceFetcher remoteInstanceFetcher, String windowWidth) {
         super(platform);
         this.mSandbox = sandbox;
         this.mPlatform = platform;
         this.remoteInstanceFetcher = remoteInstanceFetcher;
+        this.windowWidth = windowWidth;
     }
 
     /**
@@ -119,4 +125,8 @@ public void stepBack() {
     public RemoteInstanceFetcher getRemoteInstanceFetcher() {
         return remoteInstanceFetcher;
     }
+
+    public String getWindowWidth() {
+        return this.windowWidth;
+    }
 }

src/main/java/org/commcare/session/SessionInstanceBuilder.java

@@ -17,11 +17,11 @@ public class SessionInstanceBuilder {
     public static TreeElement getSessionInstance(SessionFrame frame, String deviceId,
                                                   String appversion, long drift,
                                                   String username, String userId,
-                                                  Hashtable<String, String> userFields) {
+                                                  Hashtable<String, String> userFields, String windowWidth) {
         TreeElement sessionRoot = new TreeElement("session", 0);
 
         addSessionNavData(sessionRoot, frame);
-        addMetadata(sessionRoot, deviceId, appversion, username, userId, drift);
+        addMetadata(sessionRoot, deviceId, appversion, username, userId, drift, windowWidth);
         addUserProperties(sessionRoot, userFields);
 
         return sessionRoot;
@@ -88,14 +88,15 @@ private static String getCalloutSearchResultCount(StackFrameStep step) {
 
     private static void addMetadata(TreeElement sessionRoot, String deviceId,
                                     String appversion, String username,
-                                    String userId, long drift) {
+                                    String userId, long drift, String windowWidth) {
         TreeElement sessionMeta = new TreeElement("context", 0);
 
         addData(sessionMeta, "deviceid", deviceId);
         addData(sessionMeta, "appversion", appversion);
         addData(sessionMeta, "username", username);
         addData(sessionMeta, "userid", userId);
         addData(sessionMeta, "drift", String.valueOf(drift));
+        addData(sessionMeta, "window_width", windowWidth);
 
         sessionRoot.addChild(sessionMeta);
     }