am 484d56b4: Merge "Accessibility: Folder drag and drop fixes" into ub-launcher3-burnaby

* commit '484d56b4750c84351496ed95b4473d2eb2fc43cf':
  Accessibility: Folder drag and drop fixes

src/com/android/launcher3/DragLayer.java

@@ -38,7 +38,6 @@ import android.view.animation.Interpolator;
 import android.widget.FrameLayout;
 import android.widget.TextView;
 
-import com.android.launcher3.InsettableFrameLayout.LayoutParams;
 import com.android.launcher3.util.Thunk;
 
 import java.util.ArrayList;
@@ -153,6 +152,14 @@ public class DragLayer extends InsettableFrameLayout {
         return false;
     }
 
+    private boolean isEventOverDropTargetBar(MotionEvent ev) {
+        getDescendantRectRelativeToSelf(mLauncher.getSearchBar(), mHitRect);
+        if (mHitRect.contains((int) ev.getX(), (int) ev.getY())) {
+            return true;
+        }
+        return false;
+    }
+
     public void setBlockTouch(boolean block) {
         mBlockTouches = block;
     }
@@ -188,10 +195,16 @@ public class DragLayer extends InsettableFrameLayout {
                 }
             }
 
-            getDescendantRectRelativeToSelf(currentFolder, hitRect);
             if (!isEventOverFolder(currentFolder, ev)) {
-                mLauncher.closeFolder();
-                return true;
+                if (isInAccessibleDrag()) {
+                    // Do not close the folder if in drag and drop.
+                    if (!isEventOverDropTargetBar(ev)) {
+                        return true;
+                    }
+                } else {
+                    mLauncher.closeFolder();
+                    return true;
+                }
             }
         }
         return false;
@@ -228,11 +241,12 @@ public class DragLayer extends InsettableFrameLayout {
                         getContext().getSystemService(Context.ACCESSIBILITY_SERVICE);
             if (accessibilityManager.isTouchExplorationEnabled()) {
                 final int action = ev.getAction();
-                boolean isOverFolder;
+                boolean isOverFolderOrSearchBar;
                 switch (action) {
                     case MotionEvent.ACTION_HOVER_ENTER:
-                        isOverFolder = isEventOverFolder(currentFolder, ev);
-                        if (!isOverFolder) {
+                        isOverFolderOrSearchBar = isEventOverFolder(currentFolder, ev) ||
+                            (isInAccessibleDrag() && isEventOverDropTargetBar(ev));
+                        if (!isOverFolderOrSearchBar) {
                             sendTapOutsideFolderAccessibilityEvent(currentFolder.isEditingName());
                             mHoverPointClosesFolder = true;
                             return true;
@@ -240,12 +254,13 @@ public class DragLayer extends InsettableFrameLayout {
                         mHoverPointClosesFolder = false;
                         break;
                     case MotionEvent.ACTION_HOVER_MOVE:
-                        isOverFolder = isEventOverFolder(currentFolder, ev);
-                        if (!isOverFolder && !mHoverPointClosesFolder) {
+                        isOverFolderOrSearchBar = isEventOverFolder(currentFolder, ev) ||
+                            (isInAccessibleDrag() && isEventOverDropTargetBar(ev));
+                        if (!isOverFolderOrSearchBar && !mHoverPointClosesFolder) {
                             sendTapOutsideFolderAccessibilityEvent(currentFolder.isEditingName());
                             mHoverPointClosesFolder = true;
                             return true;
-                        } else if (!isOverFolder) {
+                        } else if (!isOverFolderOrSearchBar) {
                             return true;
                         }
                         mHoverPointClosesFolder = false;
@@ -268,6 +283,12 @@ public class DragLayer extends InsettableFrameLayout {
         }
     }
 
+    private boolean isInAccessibleDrag() {
+        LauncherAccessibilityDelegate delegate = LauncherAppState
+                .getInstance().getAccessibilityDelegate();
+        return delegate != null && delegate.isInAccessibleDrag();
+    }
+
     @Override
     public boolean onRequestSendAccessibilityEvent(View child, AccessibilityEvent event) {
         Folder currentFolder = mLauncher.getWorkspace().getOpenFolder();
@@ -275,6 +296,10 @@ public class DragLayer extends InsettableFrameLayout {
             if (child == currentFolder) {
                 return super.onRequestSendAccessibilityEvent(child, event);
             }
+
+            if (isInAccessibleDrag() && child instanceof SearchDropTargetBar) {
+                return super.onRequestSendAccessibilityEvent(child, event);
+            }
             // Skip propagating onRequestSendAccessibilityEvent all for other children
             // when a folder is open
             return false;
@@ -288,6 +313,10 @@ public class DragLayer extends InsettableFrameLayout {
         if (currentFolder != null) {
             // Only add the folder as a child for accessibility when it is open
             childrenForAccessibility.add(currentFolder);
+
+            if (isInAccessibleDrag()) {
+                childrenForAccessibility.add(mLauncher.getSearchBar());
+            }
         } else {
             super.addChildrenForAccessibility(childrenForAccessibility);
         }

src/com/android/launcher3/Folder.java

@@ -275,6 +275,9 @@ public class Folder extends LinearLayout implements DragSource, View.OnClickList
         for (int i = 0; i < mContent.getChildCount(); i++) {
             mContent.getPageAt(i).enableAccessibleDrag(enable, CellLayout.FOLDER_ACCESSIBILITY_DRAG);
         }
+
+        mFooter.setImportantForAccessibility(enable ? IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS :
+            IMPORTANT_FOR_ACCESSIBILITY_AUTO);
         mLauncher.getWorkspace().setAddNewPageOnDrag(!enable);
     }
 

src/com/android/launcher3/FolderPagedView.java

@@ -504,6 +504,10 @@ public class FolderPagedView extends PagedView {
         }
     }
 
+    public int getAllocatedContentSize() {
+        return mAllocatedContentSize;
+    }
+
     /**
      * Reorders the items such that the {@param empty} spot moves to {@param target}
      */

src/com/android/launcher3/accessibility/FolderAccessibilityHelper.java

@@ -24,23 +24,29 @@ import com.android.launcher3.R;
  * Implementation of {@link DragAndDropAccessibilityDelegate} to support DnD in a folder.
  */
 public class FolderAccessibilityHelper extends DragAndDropAccessibilityDelegate {
+
+    /**
+     * 0-index position for the first cell in {@link #mView} in {@link #mParent}.
+     */
     private final int mStartPosition;
 
+    private final FolderPagedView mParent;
+
     public FolderAccessibilityHelper(CellLayout layout) {
         super(layout);
-        FolderPagedView parent = (FolderPagedView) layout.getParent();
+        mParent = (FolderPagedView) layout.getParent();
 
-        int index = parent.indexOfChild(layout);
-        mStartPosition = 1 + index * layout.getCountX() * layout.getCountY();
+        int index = mParent.indexOfChild(layout);
+        mStartPosition = index * layout.getCountX() * layout.getCountY();
     }
     @Override
     protected int intersectsValidDropTarget(int id) {
-        return id;
+        return Math.min(id, mParent.getAllocatedContentSize() - mStartPosition - 1);
     }
 
     @Override
     protected String getLocationDescriptionForIconDrop(int id) {
-        return mContext.getString(R.string.move_to_position, id + mStartPosition);
+        return mContext.getString(R.string.move_to_position, id + mStartPosition + 1);
     }
 
     @Override