[EoC] Handle snackbar for bottom sheet

Bug: 822951
Change-Id: If213f5703c966868778cd00511f222eba6ff5191
Reviewed-on: https://chromium-review.googlesource.com/990575
Commit-Queue: Becky Zhou <huayinz@chromium.org>
Reviewed-by: Theresa <twellington@chromium.org>
Reviewed-by: Matthew Jones <mdjones@chromium.org>
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548222}

chrome/android/java/res/layout/bottom_sheet.xml

@@ -55,4 +55,10 @@
         android:scaleType="fitXY"
         android:contentDescription="@null" />
 
+    <FrameLayout
+        android:id="@+id/bottom_sheet_snackbar_container"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_gravity="start|bottom" />
+
 </org.chromium.chrome.browser.widget.bottomsheet.BottomSheet>

chrome/android/java/res/layout/main.xml

@@ -90,12 +90,6 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content" />
 
-        <FrameLayout
-            android:id="@+id/bottom_sheet_snackbar_container"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:layout_gravity="start|bottom" />
-
         <ViewStub
             android:id="@+id/empty_container_stub"
             android:inflatedId="@+id/empty_container"

chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java

@@ -1192,7 +1192,10 @@ public abstract class ChromeActivity extends AsyncInitializationActivity
      */
     @Override
     public SnackbarManager getSnackbarManager() {
-        return mSnackbarManager;
+        return mBottomSheetController != null
+                        && mBottomSheetController.getBottomSheet().isSheetOpen()
+                ? mBottomSheetController.getSnackbarManager()
+                : mSnackbarManager;
     }
 
     /**
@@ -1269,7 +1272,7 @@ public abstract class ChromeActivity extends AsyncInitializationActivity
             ((BottomContainer) findViewById(R.id.bottom_container)).setBottomSheet(mBottomSheet);
 
             mFadingBackgroundView = (FadingBackgroundView) findViewById(R.id.fading_focus_target);
-            mBottomSheetController = new BottomSheetController(getTabModelSelector(),
+            mBottomSheetController = new BottomSheetController(this, getTabModelSelector(),
                     getCompositorViewHolder().getLayoutManager(), mFadingBackgroundView,
                     mBottomSheet);
 

chrome/android/java/src/org/chromium/chrome/browser/contextual_suggestions/ContextualSuggestionsCoordinator.java

@@ -110,7 +110,7 @@ public class ContextualSuggestionsCoordinator {
                 new SuggestionsUiDelegateImpl(suggestionsSource, new DummyEventReporter(),
                         navigationDelegate, mProfile, mBottomSheetController.getBottomSheet(),
                         mActivity.getChromeApplication().getReferencePool(),
-                        mActivity.getSnackbarManager());
+                        mBottomSheetController.getSnackbarManager());
 
         mContentCoordinator.showSuggestions(mActivity, mProfile, uiDelegate, mModel,
                 mActivity.getWindowAndroid(), mActivity::closeContextMenu);

chrome/android/java/src/org/chromium/chrome/browser/widget/bottomsheet/BottomSheetController.java

@@ -4,12 +4,17 @@
 
 package org.chromium.chrome.browser.widget.bottomsheet;
 
+import android.app.Activity;
 import android.view.ViewGroup;
 
+import org.chromium.base.ActivityState;
+import org.chromium.base.ApplicationStatus;
+import org.chromium.chrome.R;
 import org.chromium.chrome.browser.compositor.layouts.Layout;
 import org.chromium.chrome.browser.compositor.layouts.LayoutManager;
 import org.chromium.chrome.browser.compositor.layouts.SceneChangeObserver;
 import org.chromium.chrome.browser.compositor.layouts.StaticLayout;
+import org.chromium.chrome.browser.snackbar.SnackbarManager;
 import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.tabmodel.TabModelSelector;
 import org.chromium.chrome.browser.tabmodel.TabModelSelectorTabObserver;
@@ -27,7 +32,7 @@ import java.util.PriorityQueue;
  * and call {@link #requestShowContent(BottomSheetContent, boolean)} which will return true if the
  * content was actually shown (see full doc on method).
  */
-public class BottomSheetController {
+public class BottomSheetController implements ApplicationStatus.ActivityStateListener {
     /** The initial capacity for the priority queue handling pending content show requests. */
     private static final int INITIAL_QUEUE_CAPACITY = 1;
 
@@ -37,6 +42,9 @@ public class BottomSheetController {
     /** A handle to the {@link BottomSheet} that this class controls. */
     private final BottomSheet mBottomSheet;
 
+    /** A handle to the {@link SnackbarManager} that manages snackbars inside the bottom sheet. */
+    private final SnackbarManager mSnackbarManager;
+
     /** A queue for content that is waiting to be shown in the {@link BottomSheet}. */
     private PriorityQueue<BottomSheetContent> mContentQueue;
 
@@ -53,11 +61,15 @@ public class BottomSheetController {
      * @param fadingBackgroundView The scrim that shows when the bottom sheet is opened.
      * @param bottomSheet The bottom sheet that this class will be controlling.
      */
-    public BottomSheetController(final TabModelSelector tabModelSelector,
+    public BottomSheetController(final Activity activity, final TabModelSelector tabModelSelector,
             final LayoutManager layoutManager, final FadingBackgroundView fadingBackgroundView,
             BottomSheet bottomSheet) {
         mBottomSheet = bottomSheet;
         mLayoutManager = layoutManager;
+        mSnackbarManager = new SnackbarManager(
+                activity, mBottomSheet.findViewById(R.id.bottom_sheet_snackbar_container));
+        mSnackbarManager.onStart();
+        ApplicationStatus.registerStateListenerForActivity(this, activity);
 
         // Handle interactions with the scrim.
         fadingBackgroundView.addObserver(new FadingViewObserver() {
@@ -132,6 +144,11 @@ public class BottomSheetController {
                 UiUtils.removeViewFromParent(fadingBackgroundView);
                 parent.addView(fadingBackgroundView, mOriginalScrimIndexInParent);
             }
+
+            @Override
+            public void onSheetOffsetChanged(float heightFraction) {
+                mSnackbarManager.dismissAllSnackbars();
+            }
         });
 
         // Initialize the queue with a comparator that checks content priority.
@@ -146,6 +163,13 @@ public class BottomSheetController {
         return mBottomSheet;
     }
 
+    /**
+     * @return The {@link SnackbarManager} that manages snackbars inside the bottom sheet.
+     */
+    public SnackbarManager getSnackbarManager() {
+        return mSnackbarManager;
+    }
+
     /**
      * Request that some content be shown in the bottom sheet.
      * @param content The content to be shown in the bottom sheet.
@@ -235,6 +259,17 @@ public class BottomSheetController {
         }
     }
 
+    @Override
+    public void onActivityStateChange(Activity activity, int newState) {
+        if (newState == ActivityState.STARTED) {
+            mSnackbarManager.onStart();
+        } else if (newState == ActivityState.STOPPED) {
+            mSnackbarManager.onStop();
+        } else if (newState == ActivityState.DESTROYED) {
+            ApplicationStatus.unregisterActivityStateListener(this);
+        }
+    }
+
     /**
      * Show the next {@link BottomSheetContent} if it is available and peek the sheet. If no content
      * is available the sheet's content is set to null.