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Commit 93be7632 authored by Yifei Zhang's avatar Yifei Zhang
Browse files

swipe-dismiss: reintroduce windowSwipeToDismiss for compatibility 

- We need to revive this feature for compatibility support for Wear OS
  devices.

Test: build / flash
Bug: 290801678
Change-Id: I096fb31824288fb578fa334ed452a652c739c814
parent 2e9dce44

core/java/android/window/WindowOnBackInvokedDispatcher.java

+30 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ import android.content.Context; 
import android.content.ContextWrapper;

import android.content.pm.ActivityInfo;

import android.content.pm.ApplicationInfo;

import android.content.res.TypedArray;

import android.os.Handler;

import android.os.RemoteException;

import android.os.SystemProperties;
@@ -33,6 +34,7 @@ import android.view.IWindowSession; 


import androidx.annotation.VisibleForTesting;





import java.io.PrintWriter;

import java.lang.ref.WeakReference;

import java.util.ArrayList;
@@ -62,6 +64,9 @@ public class WindowOnBackInvokedDispatcher implements OnBackInvokedDispatcher { 
            .getInt("persist.wm.debug.predictive_back", 1) != 0;

    private static final boolean ALWAYS_ENFORCE_PREDICTIVE_BACK = SystemProperties

            .getInt("persist.wm.debug.predictive_back_always_enforce", 0) != 0;

    private static final boolean PREDICTIVE_BACK_FALLBACK_WINDOW_ATTRIBUTE =

            SystemProperties.getInt("persist.wm.debug.predictive_back_fallback_window_attribute", 0)

                    != 0;

    @Nullable

    private ImeOnBackInvokedDispatcher mImeDispatcher;
@@ -500,6 +505,31 @@ public class WindowOnBackInvokedDispatcher implements OnBackInvokedDispatcher { 
                            applicationInfo.packageName,

                            requestsPredictiveBack));

                }



                if (PREDICTIVE_BACK_FALLBACK_WINDOW_ATTRIBUTE && !requestsPredictiveBack) {

                    // Compatibility check for legacy window style flag used by Wear OS.

                    // Note on compatibility behavior:

                    // 1. windowSwipeToDismiss should be respected for all apps not opted in.

                    // 2. windowSwipeToDismiss should be true for all apps not opted in, which

                    //    enables the PB animation for them.

                    // 3. windowSwipeToDismiss=false should be respected for apps not opted in,

                    //    which disables PB & onBackPressed caused by BackAnimController's

                    //    setTrigger(true)

                    TypedArray windowAttr =

                            context.obtainStyledAttributes(

                                    new int[] {android.R.attr.windowSwipeToDismiss});

                    boolean windowSwipeToDismiss = true;

                    if (windowAttr.getIndexCount() > 0) {

                        windowSwipeToDismiss = windowAttr.getBoolean(0, true);

                    }

                    windowAttr.recycle();



                    if (DEBUG) {

                        Log.i(TAG, "falling back to windowSwipeToDismiss: " + windowSwipeToDismiss);

                    }



                    requestsPredictiveBack = windowSwipeToDismiss;

                }

            }



            return requestsPredictiveBack;

core/res/res/values-watch/config_material.xml

+0 −3
Original line number Diff line number Diff line
@@ -30,9 +30,6 @@ 
    <!-- Always overscan by default to ensure onApplyWindowInsets will always be called. -->

    <bool name="config_windowOverscanByDefault">true</bool>



    <!-- Enable windowSwipeToDismiss. -->

    <bool name="config_windowSwipeToDismiss">true</bool>



    <!-- Style the scrollbars accoridngly. -->

    <drawable name="config_scrollbarThumbVertical">@drawable/scrollbar_vertical_thumb</drawable>

    <drawable name="config_scrollbarTrackVertical">@drawable/scrollbar_vertical_track</drawable>