[Home] Move bottom sheet classes to widget/bottomsheet

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

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-package org.chromium.chrome.browser.widget;
+package org.chromium.chrome.browser.widget.bottomsheet;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.ValueAnimator;
 import android.content.Context;
 import android.graphics.Region;
 import android.support.annotation.IntDef;
 import android.support.annotation.Nullable;
 import android.util.AttributeSet;
 import android.view.GestureDetector;
 import android.view.MotionEvent;
 import android.view.VelocityTracker;
 import android.view.View;
 import android.view.animation.DecelerateInterpolator;
 import android.view.animation.Interpolator;
 import android.widget.FrameLayout;
 
 import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.base.ObserverList;
 import org.chromium.base.VisibleForTesting;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.NativePageHost;
 import org.chromium.chrome.browser.TabLoadStatus;
 import org.chromium.chrome.browser.fullscreen.ChromeFullscreenManager;
 import org.chromium.chrome.browser.ntp.NativePageFactory;
 import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.tabmodel.TabModel;
 import org.chromium.chrome.browser.tabmodel.TabModelSelector;
 import org.chromium.chrome.browser.util.MathUtils;
+import org.chromium.chrome.browser.widget.FadingBackgroundView;
 import org.chromium.content_public.browser.LoadUrlParams;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 
 /**
  * This class defines the bottom sheet that has multiple states and a persistently showing toolbar.
  * Namely, the states are:
  * - PEEK: Only the toolbar is visible at the bottom of the screen.
  * - HALF: The sheet is expanded to consume around half of the screen.
@@ skipping 142 matching lines @@
      * This class is responsible for detecting swipe and scroll events on the bottom sheet or
      * ignoring them when appropriate.
      */
     private class BottomSheetSwipeDetector extends GestureDetector.SimpleOnGestureListener {
         @Override
         public boolean onDown(MotionEvent e) {
             return true;
         }
 
         @Override
-        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
-                float distanceY) {
+        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
             // Only start scrolling if the scroll is up or down. If the user is already scrolling,
             // continue moving the sheet.
             float slope = Math.abs(distanceX) > 0f ? Math.abs(distanceY) / Math.abs(distanceX) : 0f;
             if (!mIsScrolling && slope < MIN_VERTICAL_SCROLL_SLOPE) {
                 mVelocityTracker.clear();
                 return false;
             }
 
             // Cancel the settling animation if it is running so it doesn't conflict with where the
             // user wants to move the sheet.
@@ skipping 27 matching lines @@
             }
 
             float newOffset = getSheetOffsetFromBottom() + distanceY;
             setSheetOffsetFromBottom(MathUtils.clamp(newOffset, getMinOffset(), getMaxOffset()));
 
             mIsScrolling = true;
             return true;
         }
 
         @Override
-        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
-                float velocityY) {
+        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
             cancelAnimation();
 
             // Figure out the projected state of the sheet and animate there. Note that a swipe up
             // will have a negative velocity, swipe down will have a positive velocity. Negate this
             // values so that the logic is more intuitive.
             @SheetState
             int targetState = getTargetSheetState(
                     getSheetOffsetFromBottom() + getFlingDistance(-velocityY), -velocityY);
             setSheetState(targetState, true);
             mIsScrolling = false;
@@ skipping 324 matching lines @@
         mSettleAnimator.cancel();
         mSettleAnimator = null;
     }
 
     /**
      * Creates the sheet's animation to a target state.
      * @param targetState The target state.
      */
     private void createSettleAnimation(@SheetState int targetState) {
         mCurrentState = targetState;
-        mSettleAnimator = ValueAnimator.ofFloat(getSheetOffsetFromBottom(),
-                getSheetHeightForState(targetState));
+        mSettleAnimator = ValueAnimator.ofFloat(
+                getSheetOffsetFromBottom(), getSheetHeightForState(targetState));
         mSettleAnimator.setDuration(BASE_ANIMATION_DURATION_MS);
         mSettleAnimator.setInterpolator(mInterpolator);
 
         // When the animation is canceled or ends, reset the handle to null.
         mSettleAnimator.addListener(new AnimatorListenerAdapter() {
             @Override
             public void onAnimationEnd(Animator animator) {
                 mSettleAnimator = null;
             }
         });
@@ skipping 223 matching lines @@
     @Override
     public void onFadingViewVisibilityChanged(boolean visible) {}
 
     private boolean canMoveSheet() {
         boolean isInOverviewMode = mTabModelSelector != null
                 && (mTabModelSelector.getCurrentTab() == null
                            || mTabModelSelector.getCurrentTab().getActivity().isInOverviewMode());
         return !isToolbarAndroidViewHidden() && !isInOverviewMode;
     }
 }