Add retrieval of StackBox info for more flexibility

First step in permitting StackBoxes to be manipulated by user.
Necessary for Configuration changes coming down.

Change-Id: I4029926a35e4fdc59a5759fd9e4bae10bb308413

1 files changed, 27 insertions, 0 deletions

diff --git a/services/java/com/android/server/wm/DisplayContent.java b/services/java/com/android/server/wm/DisplayContent.java
index 0dbcfb8..8ad2ef1 100644
--- a/services/java/com/android/server/wm/DisplayContent.java
+++ b/services/java/com/android/server/wm/DisplayContent.java
@@ -21,6 +21,7 @@ import static com.android.server.wm.WindowManagerService.DEBUG_STACK;
 import static com.android.server.wm.WindowManagerService.DEBUG_VISIBILITY;
 import static com.android.server.wm.WindowManagerService.TAG;
 
+import android.app.ActivityManager.StackBoxInfo;
 import android.graphics.Rect;
 import android.graphics.Region;
 import android.util.Slog;
@@ -284,6 +285,32 @@ class DisplayContent {
         mStackBoxes.remove(box);
     }
 
+    StackBoxInfo getStackBoxInfo(StackBox box) {
+        StackBoxInfo info = new StackBoxInfo();
+        info.stackBoxId = box.mStackBoxId;
+        info.weight = box.mWeight;
+        info.vertical = box.mVertical;
+        info.bounds = new Rect(box.mBounds);
+        if (box.mStack != null) {
+            info.stackId = box.mStack.mStackId;
+            // ActivityManagerService will fill in the StackInfo.
+        } else {
+            info.stackId = -1;
+            info.children = new StackBoxInfo[2];
+            info.children[0] = getStackBoxInfo(box.mFirst);
+            info.children[1] = getStackBoxInfo(box.mSecond);
+        }
+        return info;
+    }
+
+    ArrayList<StackBoxInfo> getStackBoxInfos() {
+        ArrayList<StackBoxInfo> list = new ArrayList<StackBoxInfo>();
+        for (int stackBoxNdx = mStackBoxes.size() - 1; stackBoxNdx >= 0; --stackBoxNdx) {
+            list.add(getStackBoxInfo(mStackBoxes.get(stackBoxNdx)));
+        }
+        return list;
+    }
+
     /**
      * Move the home StackBox to the top or bottom of mStackBoxes. That is the only place
      * it is allowed to be. This is a nop if the home StackBox is already in the correct position.