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Commit 1abb683a authored by Yunfan Chen's avatar Yunfan Chen
Browse files

Notify task description change to system UI (4/N) 

The TaskStackChangeListener will take the task description chagne event
and notify the listeners. It will be able to let system UI handle the
theme change of the task correctly.

Bug: 113253712
Bug: 122726344
Test: go/wm-smoke
Test: Test with an app with theme, the listener will receive the
      background color.
Test: Manually registered a listener from system UI and the event is
      correctly received.

Change-Id: I087cc112be73cf421fa124cd0d6b238f91970a0c
parent 4a0b1750

packages/SystemUI/shared/src/com/android/systemui/shared/system/TaskStackChangeListener.java

+8 −0
Original line number Diff line number Diff line
@@ -89,6 +89,14 @@ public abstract class TaskStackChangeListener { 
        onTaskMovedToFront(taskInfo.taskId);

    }



    /**

     * Called when a task’s description is changed due to an activity calling

     * ActivityManagerService.setTaskDescription

     *

     * @param taskInfo info about the task which changed, with {@link TaskInfo#taskDescription}

     */

    public void onTaskDescriptionChanged(RunningTaskInfo taskInfo) { }



    public void onActivityRequestedOrientationChanged(int taskId, int requestedOrientation) { }

    public void onSizeCompatModeActivityChanged(int displayId, IBinder activityToken) { }

packages/SystemUI/shared/src/com/android/systemui/shared/system/TaskStackChangeListeners.java

+13 −0
Original line number Diff line number Diff line
@@ -230,6 +230,11 @@ public class TaskStackChangeListeners extends TaskStackListener { 
                .sendToTarget();

    }



    @Override

    public void onTaskDescriptionChanged(RunningTaskInfo taskInfo) {

        mHandler.obtainMessage(H.ON_TASK_DESCRIPTION_CHANGED, taskInfo).sendToTarget();

    }



    private final class H extends Handler {

        private static final int ON_TASK_STACK_CHANGED = 1;

        private static final int ON_TASK_SNAPSHOT_CHANGED = 2;
@@ -254,6 +259,7 @@ public class TaskStackChangeListeners extends TaskStackListener { 
        private static final int ON_TASK_LIST_UPDATED = 21;

        private static final int ON_SINGLE_TASK_DISPLAY_EMPTY = 22;

        private static final int ON_TASK_LIST_FROZEN_UNFROZEN = 23;

        private static final int ON_TASK_DESCRIPTION_CHANGED = 24;





        public H(Looper looper) {
@@ -421,6 +427,13 @@ public class TaskStackChangeListeners extends TaskStackListener { 
                        }

                        break;

                    }

                    case ON_TASK_DESCRIPTION_CHANGED: {

                        final RunningTaskInfo info = (RunningTaskInfo) msg.obj;

                        for (int i = mTaskStackListeners.size() - 1; i >= 0; i--) {

                            mTaskStackListeners.get(i).onTaskDescriptionChanged(info);

                        }

                        break;

                    }

                }

            }

        }