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Commit d4e9e66e authored by Andrii Kulian's avatar Andrii Kulian Committed by Automerger Merge Worker
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Merge changes from topic "sticky_placeholders_custom_finishing_behavior" into... 

Merge changes from topic "sticky_placeholders_custom_finishing_behavior" into sc-v2-dev am: d2fceab0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16178839

Change-Id: Ic06afcf70cf5f63c68b3679f04f0fa9f40058f53
parents 8f2a800d d2fceab0

libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/SplitContainer.java

+33 −2
Original line number Diff line number Diff line
@@ -73,17 +73,48 @@ class SplitContainer { 
    static boolean shouldFinishPrimaryWithSecondary(@NonNull SplitRule splitRule) {

        final boolean isPlaceholderContainer = splitRule instanceof SplitPlaceholderRule;

        final boolean shouldFinishPrimaryWithSecondary = (splitRule instanceof SplitPairRule)

                && ((SplitPairRule) splitRule).shouldFinishPrimaryWithSecondary();

                && ((SplitPairRule) splitRule).getFinishPrimaryWithSecondary()

                != SplitRule.FINISH_NEVER;

        return shouldFinishPrimaryWithSecondary || isPlaceholderContainer;

    }



    static boolean shouldFinishSecondaryWithPrimary(@NonNull SplitRule splitRule) {

        final boolean isPlaceholderContainer = splitRule instanceof SplitPlaceholderRule;

        final boolean shouldFinishSecondaryWithPrimary = (splitRule instanceof SplitPairRule)

                && ((SplitPairRule) splitRule).shouldFinishSecondaryWithPrimary();

                && ((SplitPairRule) splitRule).getFinishSecondaryWithPrimary()

                != SplitRule.FINISH_NEVER;

        return shouldFinishSecondaryWithPrimary || isPlaceholderContainer;

    }



    static boolean shouldFinishAssociatedContainerWhenStacked(int finishBehavior) {

        return finishBehavior == SplitRule.FINISH_ALWAYS;

    }



    static boolean shouldFinishAssociatedContainerWhenAdjacent(int finishBehavior) {

        return finishBehavior == SplitRule.FINISH_ALWAYS

                || finishBehavior == SplitRule.FINISH_ADJACENT;

    }



    static int getFinishPrimaryWithSecondaryBehavior(@NonNull SplitRule splitRule) {

        if (splitRule instanceof SplitPlaceholderRule) {

            return ((SplitPlaceholderRule) splitRule).getFinishPrimaryWithSecondary();

        }

        if (splitRule instanceof SplitPairRule) {

            return ((SplitPairRule) splitRule).getFinishPrimaryWithSecondary();

        }

        return SplitRule.FINISH_NEVER;

    }



    static int getFinishSecondaryWithPrimaryBehavior(@NonNull SplitRule splitRule) {

        if (splitRule instanceof SplitPlaceholderRule) {

            return SplitRule.FINISH_ALWAYS;

        }

        if (splitRule instanceof SplitPairRule) {

            return ((SplitPairRule) splitRule).getFinishSecondaryWithPrimary();

        }

        return SplitRule.FINISH_NEVER;

    }



    static boolean isStickyPlaceholderRule(@NonNull SplitRule splitRule) {

        if (!(splitRule instanceof SplitPlaceholderRule)) {

            return false;

libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/SplitController.java

+18 −8
Original line number Diff line number Diff line
@@ -16,7 +16,11 @@ 


package androidx.window.extensions.embedding;



import static androidx.window.extensions.embedding.SplitContainer.getFinishPrimaryWithSecondaryBehavior;

import static androidx.window.extensions.embedding.SplitContainer.getFinishSecondaryWithPrimaryBehavior;

import static androidx.window.extensions.embedding.SplitContainer.isStickyPlaceholderRule;

import static androidx.window.extensions.embedding.SplitContainer.shouldFinishAssociatedContainerWhenAdjacent;

import static androidx.window.extensions.embedding.SplitContainer.shouldFinishAssociatedContainerWhenStacked;



import android.annotation.NonNull;

import android.annotation.Nullable;
@@ -665,15 +669,21 @@ public class SplitController implements JetpackTaskFragmentOrganizer.TaskFragmen 
            // Containers are not in the same split, no need to retain.

            return false;

        }



        if (!isStickyPlaceholderRule(splitContainer.getSplitRule())) {

            // Currently only the containers associated with sticky placeholders can be retained.

            return false;

        // Find the finish behavior for the associated container

        int finishBehavior;

        SplitRule splitRule = splitContainer.getSplitRule();

        if (finishingContainer == splitContainer.getPrimaryContainer()) {

            finishBehavior = getFinishSecondaryWithPrimaryBehavior(splitRule);

        } else {

            finishBehavior = getFinishPrimaryWithSecondaryBehavior(splitRule);

        }

        // Decide whether the associated container should be retained based on the current

        // presentation mode.

        if (mPresenter.shouldShowSideBySide(splitContainer)) {

            return !shouldFinishAssociatedContainerWhenAdjacent(finishBehavior);

        } else {

            return !shouldFinishAssociatedContainerWhenStacked(finishBehavior);

        }



        // When sticky placeholder is stacked on top of the main container it should not cause the

        // destruction of the primary one.

        return !mPresenter.shouldShowSideBySide(splitContainer);

    }



    /**