ListPopupWindow should use window layout type SUB_PANEL

Look down, back up, where are you? You're in a dialog with an
AutoCompleteTextView. What's on your screen? I have it, it's the
auto-completion results you could be seeing. Look again. The window
layout type is now TYPE_APPLICATION_SUB_PANEL and the auto-completion
results are visible.

Also adds API on ListPopupWindow to specify the window layout type
and changes the text editing handle to be type ABOVE_SUB_PANEL.

Bug: 18530738
Change-Id: Id5577c4892729920de5b73411e580e6b2b2401d0

api/current.txt

@@ -40635,6 +40635,7 @@ package android.widget {
     method public void setSoftInputMode(int);
     method public void setVerticalOffset(int);
     method public void setWidth(int);
+    method public void setWindowLayoutType(int);
     method public void show();
     field public static final int INPUT_METHOD_FROM_FOCUSABLE = 0; // 0x0
     field public static final int INPUT_METHOD_NEEDED = 1; // 0x1

api/system-current.txt

@@ -43156,6 +43156,7 @@ package android.widget {
     method public void setSoftInputMode(int);
     method public void setVerticalOffset(int);
     method public void setWidth(int);
+    method public void setWindowLayoutType(int);
     method public void show();
     field public static final int INPUT_METHOD_FROM_FOCUSABLE = 0; // 0x0
     field public static final int INPUT_METHOD_NEEDED = 1; // 0x1

core/java/android/widget/Editor.java

@@ -2422,7 +2422,8 @@ public class Editor {
         public PinnedPopupWindow() {
             createPopupWindow();
 
-            mPopupWindow.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL);
+            mPopupWindow.setWindowLayoutType(
+                    WindowManager.LayoutParams.TYPE_APPLICATION_ABOVE_SUB_PANEL);
             mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
             mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
 

core/java/android/widget/ListPopupWindow.java

@@ -39,6 +39,7 @@ import android.view.View.OnTouchListener;
 import android.view.ViewConfiguration;
 import android.view.ViewGroup;
 import android.view.ViewParent;
+import android.view.WindowManager;
 import android.view.animation.AccelerateDecelerateInterpolator;
 
 import com.android.internal.R;
@@ -77,6 +78,7 @@ public class ListPopupWindow {
     private int mDropDownWidth = ViewGroup.LayoutParams.WRAP_CONTENT;
     private int mDropDownHorizontalOffset;
     private int mDropDownVerticalOffset;
+    private int mDropDownWindowLayoutType = WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL;
     private boolean mDropDownVerticalOffsetSet;
 
     private int mDropDownGravity = Gravity.NO_GRAVITY;
@@ -514,6 +516,19 @@ public class ListPopupWindow {
         mDropDownHeight = height;
     }
 
+    /**
+     * Set the layout type for this popup window.
+     * <p>
+     * See {@link WindowManager.LayoutParams#type} for possible values.
+     *
+     * @param layoutType Layout type for this window.
+     *
+     * @see WindowManager.LayoutParams#type
+     */
+    public void setWindowLayoutType(int layoutType) {
+        mDropDownWindowLayoutType = layoutType;
+    }
+
     /**
      * Sets a listener to receive events when a list item is clicked.
      * 
@@ -567,8 +582,9 @@ public class ListPopupWindow {
     public void show() {
         int height = buildDropDown();
 
-        boolean noInputMethod = isInputMethodNotNeeded();
+        final boolean noInputMethod = isInputMethodNotNeeded();
         mPopup.setAllowScrollingAnchorParent(!noInputMethod);
+        mPopup.setWindowLayoutType(mDropDownWindowLayoutType);
 
         if (mPopup.isShowing()) {
             final int widthSpec;

core/java/android/widget/PopupWindow.java

@@ -829,9 +829,9 @@ public class PopupWindow {
     }
 
     /**
-     * Set the layout type for this window. This value will be passed through to
-     * {@link WindowManager.LayoutParams#type} therefore the value should match any value
-     * {@link WindowManager.LayoutParams#type} accepts.
+     * Set the layout type for this window.
+     * <p>
+     * See {@link WindowManager.LayoutParams#type} for possible values.
      *
      * @param layoutType Layout type for this window.
      *