/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3.views;
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import android.content.Context;
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import android.content.ContextWrapper;
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import android.view.ContextThemeWrapper;
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import android.view.View.AccessibilityDelegate;
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import com.android.launcher3.DeviceProfile;
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import com.android.launcher3.ItemInfo;
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import com.android.launcher3.graphics.RotationMode;
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import com.android.launcher3.dot.DotInfo;
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/**
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* An interface to be used along with a context for various activities in Launcher. This allows a
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* generic class to depend on Context subclass instead of an Activity.
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*/
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public interface ActivityContext {
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default boolean finishAutoCancelActionMode() {
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return false;
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}
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default DotInfo getDotInfoForItem(ItemInfo info) {
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return null;
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}
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/**
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* For items with tree hierarchy, notifies the activity to invalidate the parent when a root
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* is invalidated
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* @param info info associated with a root node.
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*/
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default void invalidateParent(ItemInfo info) { }
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default AccessibilityDelegate getAccessibilityDelegate() {
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return null;
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}
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/**
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* The root view to support drag-and-drop and popup support.
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*/
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BaseDragLayer getDragLayer();
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DeviceProfile getDeviceProfile();
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/**
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* Device profile to be used by UI elements which are shown directly on top of the wallpaper
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* and whose presentation is tied to the wallpaper (and physical device) and not the activity
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* configuration.
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*/
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default DeviceProfile getWallpaperDeviceProfile() {
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return getDeviceProfile();
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}
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default RotationMode getRotationMode() {
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return RotationMode.NORMAL;
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}
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static ActivityContext lookupContext(Context context) {
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if (context instanceof ActivityContext) {
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return (ActivityContext) context;
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} else if (context instanceof ContextThemeWrapper) {
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return lookupContext(((ContextWrapper) context).getBaseContext());
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} else {
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throw new IllegalArgumentException("Cannot find ActivityContext in parent tree");
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}
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}
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}
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