Auto-expand the top notification.

Bug: 6455789
Change-Id: Ia455f204544ad0c41ace77ea3ece6e0d3d3110d9

Author: cwren

packages/SystemUI/res/values/ids.xml

@@ -17,4 +17,5 @@
 
 <resources>
     <item type="id" name="expandable_tag" />
+    <item type="id" name="user_expanded_tag" />
 </resources>

packages/SystemUI/src/com/android/systemui/ExpandHelper.java

@@ -34,6 +34,7 @@ public interface Callback {
         View getChildAtPosition(MotionEvent ev);
         View getChildAtPosition(float x, float y);
         boolean canChildBeExpanded(View v);
+        boolean setUserExpandedChild(View v, boolean userxpanded);
     }
 
     private static final String TAG = "ExpandHelper";
@@ -272,6 +273,7 @@ private void finishScale(boolean force) {
         mScaleAnimation.start();
         mStretching = false;
         setGlow(0f);
+        mCallback.setUserExpandedChild(mCurrView, h == mNaturalHeight);
         if (DEBUG) Log.d(TAG, "scale was finished on view: " + mCurrView);
         clearView();
     }

packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java

@@ -485,17 +485,7 @@ protected  boolean inflateViews(NotificationData.Entry entry, ViewGroup parent)
         // for blaming (see SwipeHelper.setLongPressListener)
         row.setTag(sbn.pkg);
 
-        // XXX: temporary: while testing big notifications, auto-expand all of them
         ViewGroup.LayoutParams lp = row.getLayoutParams();
-        Boolean expandable = Boolean.FALSE;
-        if (large != null) {
-            lp.height = ViewGroup.LayoutParams.WRAP_CONTENT;
-            expandable = Boolean.TRUE;
-        } else {
-            lp.height = rowHeight;
-        }
-        row.setLayoutParams(lp);
-        row.setTag(R.id.expandable_tag, expandable);
         workAroundBadLayerDrawableOpacity(row);
         View vetoButton = updateNotificationVetoButton(row, sbn);
         vetoButton.setContentDescription(mContext.getString(
@@ -561,10 +551,11 @@ protected  boolean inflateViews(NotificationData.Entry entry, ViewGroup parent)
 
         applyLegacyRowBackground(sbn, content);
 
+        row.setTag(R.id.expandable_tag, Boolean.valueOf(large != null));
         entry.row = row;
         entry.content = content;
         entry.expanded = expandedOneU;
-        entry.expandedLarge = expandedOneU;
+        entry.setLargeView(expandedLarge);
 
         return true;
     }
@@ -673,6 +664,7 @@ protected StatusBarNotification removeNotificationViews(IBinder key) {
         // Remove the expanded view.
         ViewGroup rowParent = (ViewGroup)entry.row.getParent();
         if (rowParent != null) rowParent.removeView(entry.row);
+        updateExpansionStates();
         updateNotificationIcons();
 
         return entry.notification;
@@ -711,16 +703,53 @@ protected StatusBarIconView addNotificationViews(IBinder key,
         if (DEBUG) {
             Slog.d(TAG, "addNotificationViews: added at " + pos);
         }
+        updateExpansionStates();
         updateNotificationIcons();
 
         return iconView;
     }
 
+    protected boolean expandView(NotificationData.Entry entry, boolean expand) {
+        if (entry.expandable()) {
+            int rowHeight =
+                    mContext.getResources().getDimensionPixelSize(R.dimen.notification_height);
+            ViewGroup.LayoutParams lp = entry.row.getLayoutParams();
+            if (expand) {
+                lp.height = ViewGroup.LayoutParams.WRAP_CONTENT;
+            } else {
+                lp.height = rowHeight;
+            }
+            entry.row.setLayoutParams(lp);
+            return expand;
+        } else {
+            return false;
+        }
+    }
+
+    protected void updateExpansionStates() {
+        int N = mNotificationData.size();
+        for (int i = 0; i < N; i++) {
+            NotificationData.Entry entry = mNotificationData.get(i);
+            if (i == (N-1)) {
+                if (DEBUG) Slog.d(TAG, "expanding top notification at " + i);
+                expandView(entry, true);
+            } else {
+                if (!entry.userExpanded()) {
+                    if (DEBUG) Slog.d(TAG, "collapsing notification at " + i);
+                    expandView(entry, false);
+                } else {
+                    if (DEBUG) Slog.d(TAG, "ignoring user-modified notification at " + i);
+                }
+            }
+        }
+    }
+
     protected abstract void haltTicker();
     protected abstract void setAreThereNotifications();
     protected abstract void updateNotificationIcons();
     protected abstract void tick(IBinder key, StatusBarNotification n, boolean firstTime);
     protected abstract void updateExpandedViewPos(int expandedPosition);
+    protected abstract int getExpandedViewMaxHeight();
 
     protected boolean isTopNotification(ViewGroup parent, NotificationData.Entry entry) {
         return parent.indexOfChild(entry.row) == 0;
@@ -797,6 +826,7 @@ public void updateNotification(IBinder key, StatusBarNotification notification)
                     handleNotificationError(key, notification, "Couldn't update icon: " + ic);
                     return;
                 }
+                updateExpansionStates();
             }
             catch (RuntimeException e) {
                 // It failed to add cleanly.  Log, and remove the view from the panel.
@@ -806,6 +836,9 @@ public void updateNotification(IBinder key, StatusBarNotification notification)
             }
         } else {
             if (DEBUG) Slog.d(TAG, "not reusing notification for key: " + key);
+            if (DEBUG) Slog.d(TAG, "contents was " + (contentsUnchanged ? "unchanged" : "changed"));
+            if (DEBUG) Slog.d(TAG, "order was " + (orderUnchanged ? "unchanged" : "changed"));
+            if (DEBUG) Slog.d(TAG, "notification is " + (isTopAnyway ? "top" : "not top"));
             removeNotificationViews(key);
             addNotificationViews(key, notification);
         }

packages/SystemUI/src/com/android/systemui/statusbar/NotificationData.java

@@ -22,6 +22,7 @@
 import android.widget.ImageView;
 
 import com.android.internal.statusbar.StatusBarNotification;
+import com.android.systemui.R;
 
 import java.util.Comparator;
 import java.util.ArrayList;
@@ -38,13 +39,32 @@ public static final class Entry {
         public View content; // takes the click events and sends the PendingIntent
         public View expanded; // the inflated RemoteViews
         public ImageView largeIcon;
-        public View expandedLarge;
+        protected View expandedLarge;
         public Entry() {}
         public Entry(IBinder key, StatusBarNotification n, StatusBarIconView ic) {
             this.key = key;
             this.notification = n;
             this.icon = ic;
         }
+        public void setLargeView(View expandedLarge) {
+            this.expandedLarge = expandedLarge;
+            writeBooleanTag(row, R.id.expandable_tag, expandedLarge != null);
+        }
+        public View getLargeView() {
+            return expandedLarge;
+        }
+        /**
+         * Return whether the entry can be expanded.
+         */
+        public boolean expandable() {
+            return NotificationData.getIsExpandable(row);
+        }
+        /**
+         * Return whether the entry has been manually expanded by the user.
+         */
+        public boolean userExpanded() {
+            return NotificationData.getUserExpanded(row);
+        }
     }
     private final ArrayList<Entry> mEntries = new ArrayList<Entry>();
     private final Comparator<Entry> mEntryCmp = new Comparator<Entry>() {
@@ -134,4 +154,41 @@ public boolean hasClearableItems() {
         }
         return false;
     }
+
+    protected static boolean readBooleanTag(View view, int id)  {
+        if (view != null) {
+            Object value = view.getTag(id);
+            return value != null && value instanceof Boolean && ((Boolean) value).booleanValue();
+        }
+        return false;
+    }
+
+    protected static boolean writeBooleanTag(View view, int id, boolean value)  {
+        if (view != null) {
+            view.setTag(id, Boolean.valueOf(value));
+            return value;
+        }
+        return false;
+    }
+
+    /**
+     * Return whether the entry can be expanded.
+     */
+    public static boolean getIsExpandable(View row) {
+        return readBooleanTag(row, R.id.expandable_tag);
+    }
+
+    /**
+     * Return whether the entry has been manually expanded by the user.
+     */
+    public static boolean getUserExpanded(View row) {
+        return readBooleanTag(row, R.id.user_expanded_tag);
+    }
+
+    /**
+     * Set whether the entry has been manually expanded by the user.
+     */
+    public static boolean setUserExpanded(View row, boolean userExpanded) {
+        return writeBooleanTag(row, R.id.user_expanded_tag, userExpanded);
+    }
 }

packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

@@ -1771,7 +1771,8 @@ static final float saturate(float a) {
         return a < 0f ? 0f : (a > 1f ? 1f : a);
     }
 
-    int getExpandedViewMaxHeight() {
+    @Override
+    protected int getExpandedViewMaxHeight() {
         return mDisplayMetrics.heightPixels - mNotificationPanelMarginBottomPx;
     }
 

packages/SystemUI/src/com/android/systemui/statusbar/policy/NotificationRowLayout.java

@@ -39,6 +39,7 @@
 import com.android.systemui.Gefingerpoken;
 import com.android.systemui.R;
 import com.android.systemui.SwipeHelper;
+import com.android.systemui.statusbar.NotificationData;
 
 import java.util.HashMap;
 
@@ -175,9 +176,11 @@ public boolean canChildBeDismissed(View v) {
     }
 
     public boolean canChildBeExpanded(View v) {
-        Object isExpandable = v.getTag(R.id.expandable_tag);
-        return isExpandable != null && isExpandable instanceof Boolean &&
-                ((Boolean)isExpandable).booleanValue();
+        return NotificationData.getIsExpandable(v);
+    }
+
+    public boolean setUserExpandedChild(View v, boolean userExpanded) {
+        return NotificationData.setUserExpanded(v, userExpanded);
     }
 
     public void onChildDismissed(View v) {

packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java

@@ -348,6 +348,11 @@ protected void addPanelWindows() {
         scroller.setFillViewport(true);
     }
 
+    @Override
+    protected int getExpandedViewMaxHeight() {
+        return getNotificationPanelHeight();
+    }
+
     private int getNotificationPanelHeight() {
         final Resources res = mContext.getResources();
         final Display d = WindowManagerImpl.getDefault().getDefaultDisplay();