Sunny Goyal
607 lines
21 KiB
Java
607 lines
21 KiB
Java
/*
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* Copyright (C) 2015 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;
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import static com.android.launcher3.LauncherState.NORMAL;
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import static com.android.launcher3.states.StateAnimationConfig.ANIM_ALL_COMPONENTS;
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import android.animation.Animator;
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import android.animation.Animator.AnimatorListener;
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import android.animation.AnimatorListenerAdapter;
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import android.animation.AnimatorSet;
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import android.os.Handler;
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import android.os.Looper;
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import com.android.launcher3.anim.AnimationSuccessListener;
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import com.android.launcher3.anim.AnimatorPlaybackController;
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import com.android.launcher3.anim.PendingAnimation;
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import com.android.launcher3.compat.AccessibilityManagerCompat;
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import com.android.launcher3.states.StateAnimationConfig;
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import com.android.launcher3.states.StateAnimationConfig.AnimationFlags;
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import java.io.PrintWriter;
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import java.util.ArrayList;
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/**
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* TODO: figure out what kind of tests we can write for this
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*
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* Things to test when changing the following class.
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* - Home from workspace
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* - from center screen
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* - from other screens
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* - Home from all apps
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* - from center screen
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* - from other screens
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* - Back from all apps
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* - from center screen
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* - from other screens
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* - Launch app from workspace and quit
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* - with back
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* - with home
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* - Launch app from all apps and quit
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* - with back
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* - with home
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* - Go to a screen that's not the default, then all
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* apps, and launch and app, and go back
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* - with back
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* -with home
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* - On workspace, long press power and go back
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* - with back
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* - with home
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* - On all apps, long press power and go back
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* - with back
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* - with home
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* - On workspace, power off
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* - On all apps, power off
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* - Launch an app and turn off the screen while in that app
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* - Go back with home key
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* - Go back with back key TODO: make this not go to workspace
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* - From all apps
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* - From workspace
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* - Enter and exit car mode (becase it causes an extra configuration changed)
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* - From all apps
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* - From the center workspace
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* - From another workspace
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*/
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public class LauncherStateManager {
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public static final String TAG = "StateManager";
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private final AnimationState mConfig = new AnimationState();
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private final Handler mUiHandler;
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private final Launcher mLauncher;
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private final ArrayList<StateListener> mListeners = new ArrayList<>();
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// Animators which are run on properties also controlled by state animations.
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private Animator[] mStateElementAnimators;
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private StateHandler[] mStateHandlers;
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private LauncherState mState = NORMAL;
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private LauncherState mLastStableState = NORMAL;
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private LauncherState mCurrentStableState = NORMAL;
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private LauncherState mRestState;
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public LauncherStateManager(Launcher l) {
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mUiHandler = new Handler(Looper.getMainLooper());
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mLauncher = l;
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}
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public LauncherState getState() {
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return mState;
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}
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public LauncherState getCurrentStableState() {
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return mCurrentStableState;
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}
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public void dump(String prefix, PrintWriter writer) {
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writer.println(prefix + "LauncherState:");
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writer.println(prefix + "\tmLastStableState:" + mLastStableState);
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writer.println(prefix + "\tmCurrentStableState:" + mCurrentStableState);
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writer.println(prefix + "\tmState:" + mState);
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writer.println(prefix + "\tmRestState:" + mRestState);
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writer.println(prefix + "\tisInTransition:" + (mConfig.currentAnimation != null));
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}
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public StateHandler[] getStateHandlers() {
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if (mStateHandlers == null) {
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mStateHandlers = mLauncher.createStateHandlers();
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}
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return mStateHandlers;
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}
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public void addStateListener(StateListener listener) {
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mListeners.add(listener);
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}
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public void removeStateListener(StateListener listener) {
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mListeners.remove(listener);
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}
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/**
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* Returns true if the state changes should be animated.
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*/
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public boolean shouldAnimateStateChange() {
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return !mLauncher.isForceInvisible() && mLauncher.isStarted();
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}
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/**
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* @return {@code true} if the state matches the current state and there is no active
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* transition to different state.
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*/
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public boolean isInStableState(LauncherState state) {
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return mState == state && mCurrentStableState == state
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&& (mConfig.targetState == null || mConfig.targetState == state);
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}
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/**
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* @see #goToState(LauncherState, boolean, Runnable)
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*/
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public void goToState(LauncherState state) {
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goToState(state, shouldAnimateStateChange());
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}
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/**
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* @see #goToState(LauncherState, boolean, Runnable)
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*/
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public void goToState(LauncherState state, boolean animated) {
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goToState(state, animated, 0, null);
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}
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/**
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* Changes the Launcher state to the provided state.
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*
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* @param animated false if the state should change immediately without any animation,
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* true otherwise
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* @paras onCompleteRunnable any action to perform at the end of the transition, of null.
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*/
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public void goToState(LauncherState state, boolean animated, Runnable onCompleteRunnable) {
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goToState(state, animated, 0, onCompleteRunnable);
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}
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/**
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* Changes the Launcher state to the provided state after the given delay.
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*/
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public void goToState(LauncherState state, long delay, Runnable onCompleteRunnable) {
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goToState(state, true, delay, onCompleteRunnable);
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}
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/**
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* Changes the Launcher state to the provided state after the given delay.
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*/
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public void goToState(LauncherState state, long delay) {
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goToState(state, true, delay, null);
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}
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public void reapplyState() {
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reapplyState(false);
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}
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public void reapplyState(boolean cancelCurrentAnimation) {
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boolean wasInAnimation = mConfig.currentAnimation != null;
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if (cancelCurrentAnimation) {
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cancelAllStateElementAnimation();
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cancelAnimation();
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}
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if (mConfig.currentAnimation == null) {
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for (StateHandler handler : getStateHandlers()) {
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handler.setState(mState);
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}
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if (wasInAnimation) {
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onStateTransitionEnd(mState);
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}
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}
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}
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private void goToState(LauncherState state, boolean animated, long delay,
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final Runnable onCompleteRunnable) {
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animated &= Utilities.areAnimationsEnabled(mLauncher);
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if (mLauncher.isInState(state)) {
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if (mConfig.currentAnimation == null) {
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// Run any queued runnable
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if (onCompleteRunnable != null) {
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onCompleteRunnable.run();
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}
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return;
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} else if (!mConfig.userControlled && animated && mConfig.targetState == state) {
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// We are running the same animation as requested
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if (onCompleteRunnable != null) {
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mConfig.currentAnimation.addListener(
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AnimationSuccessListener.forRunnable(onCompleteRunnable));
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}
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return;
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}
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}
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// Cancel the current animation. This will reset mState to mCurrentStableState, so store it.
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LauncherState fromState = mState;
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mConfig.reset();
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if (!animated) {
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cancelAllStateElementAnimation();
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onStateTransitionStart(state);
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for (StateHandler handler : getStateHandlers()) {
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handler.setState(state);
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}
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onStateTransitionEnd(state);
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// Run any queued runnable
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if (onCompleteRunnable != null) {
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onCompleteRunnable.run();
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}
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return;
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}
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if (delay > 0) {
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// Create the animation after the delay as some properties can change between preparing
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// the animation and running the animation.
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int startChangeId = mConfig.changeId;
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mUiHandler.postDelayed(() -> {
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if (mConfig.changeId == startChangeId) {
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goToStateAnimated(state, fromState, onCompleteRunnable);
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}
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}, delay);
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} else {
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goToStateAnimated(state, fromState, onCompleteRunnable);
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}
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}
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private void goToStateAnimated(LauncherState state, LauncherState fromState,
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Runnable onCompleteRunnable) {
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// Since state NORMAL can be reached from multiple states, just assume that the
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// transition plays in reverse and use the same duration as previous state.
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mConfig.duration = state == NORMAL
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? fromState.getTransitionDuration(mLauncher)
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: state.getTransitionDuration(mLauncher);
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prepareForAtomicAnimation(fromState, state, mConfig);
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AnimatorSet animation = createAnimationToNewWorkspaceInternal(state).getAnim();
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if (onCompleteRunnable != null) {
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animation.addListener(AnimationSuccessListener.forRunnable(onCompleteRunnable));
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}
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mUiHandler.post(new StartAnimRunnable(animation));
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}
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/**
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* Prepares for a non-user controlled animation from fromState to toState. Preparations include:
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* - Setting interpolators for various animations included in the state transition.
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* - Setting some start values (e.g. scale) for views that are hidden but about to be shown.
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*/
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public void prepareForAtomicAnimation(LauncherState fromState, LauncherState toState,
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StateAnimationConfig config) {
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toState.prepareForAtomicAnimation(mLauncher, fromState, config);
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}
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/**
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* Creates an animation representing atomic transitions between the provided states
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*/
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public AnimatorSet createAtomicAnimation(
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LauncherState fromState, LauncherState toState, StateAnimationConfig config) {
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PendingAnimation builder = new PendingAnimation(config.duration);
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prepareForAtomicAnimation(fromState, toState, config);
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for (StateHandler handler : mLauncher.getStateManager().getStateHandlers()) {
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handler.setStateWithAnimation(toState, config, builder);
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}
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return builder.getAnim();
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}
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/**
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* Creates a {@link AnimatorPlaybackController} that can be used for a controlled
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* state transition.
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* @param state the final state for the transition.
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* @param duration intended duration for normal playback. Use higher duration for better
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* accuracy.
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*/
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public AnimatorPlaybackController createAnimationToNewWorkspace(
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LauncherState state, long duration) {
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return createAnimationToNewWorkspace(state, duration, ANIM_ALL_COMPONENTS);
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}
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public AnimatorPlaybackController createAnimationToNewWorkspace(
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LauncherState state, long duration, @AnimationFlags int animComponents) {
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StateAnimationConfig config = new StateAnimationConfig();
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config.duration = duration;
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config.animFlags = animComponents;
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return createAnimationToNewWorkspace(state, config);
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}
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public AnimatorPlaybackController createAnimationToNewWorkspace(LauncherState state,
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StateAnimationConfig config) {
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config.userControlled = true;
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mConfig.reset();
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config.copyTo(mConfig);
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mConfig.playbackController = createAnimationToNewWorkspaceInternal(state)
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.createPlaybackController();
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return mConfig.playbackController;
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}
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private PendingAnimation createAnimationToNewWorkspaceInternal(final LauncherState state) {
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PendingAnimation builder = new PendingAnimation(mConfig.duration);
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for (StateHandler handler : getStateHandlers()) {
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handler.setStateWithAnimation(state, mConfig, builder);
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}
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builder.getAnim().addListener(new AnimationSuccessListener() {
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@Override
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public void onAnimationStart(Animator animation) {
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// Change the internal state only when the transition actually starts
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onStateTransitionStart(state);
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}
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@Override
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public void onAnimationSuccess(Animator animator) {
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onStateTransitionEnd(state);
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}
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});
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mConfig.setAnimation(builder.getAnim(), state);
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return builder;
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}
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private void onStateTransitionStart(LauncherState state) {
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if (mState != state) {
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mState.onStateDisabled(mLauncher);
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}
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mState = state;
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mState.onStateEnabled(mLauncher);
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mLauncher.onStateSetStart(mState);
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if (state.disablePageClipping) {
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// Only disable clipping if needed, otherwise leave it as previous value.
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mLauncher.getWorkspace().setClipChildren(false);
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}
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for (int i = mListeners.size() - 1; i >= 0; i--) {
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mListeners.get(i).onStateTransitionStart(state);
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}
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}
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private void onStateTransitionEnd(LauncherState state) {
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// Only change the stable states after the transitions have finished
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if (state != mCurrentStableState) {
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mLastStableState = state.getHistoryForState(mCurrentStableState);
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mCurrentStableState = state;
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}
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state.onStateTransitionEnd(mLauncher);
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mLauncher.onStateSetEnd(state);
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if (state == NORMAL) {
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setRestState(null);
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}
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for (int i = mListeners.size() - 1; i >= 0; i--) {
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mListeners.get(i).onStateTransitionComplete(state);
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}
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AccessibilityManagerCompat.sendStateEventToTest(mLauncher, state.ordinal);
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}
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public LauncherState getLastState() {
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return mLastStableState;
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}
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public void moveToRestState() {
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if (mConfig.currentAnimation != null && mConfig.userControlled) {
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// The user is doing something. Lets not mess it up
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return;
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}
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if (mState.disableRestore) {
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goToState(getRestState());
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// Reset history
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mLastStableState = NORMAL;
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}
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}
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public LauncherState getRestState() {
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return mRestState == null ? NORMAL : mRestState;
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}
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public void setRestState(LauncherState restState) {
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mRestState = restState;
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}
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/**
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* Cancels the current animation.
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*/
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public void cancelAnimation() {
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mConfig.reset();
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}
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public void setCurrentUserControlledAnimation(AnimatorPlaybackController controller) {
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clearCurrentAnimation();
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setCurrentAnimation(controller.getTarget());
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mConfig.userControlled = true;
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mConfig.playbackController = controller;
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}
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/**
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* Sets the animation as the current state animation, i.e., canceled when
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* starting another animation and may block some launcher interactions while running.
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*
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* @param childAnimations Set of animations with the new target is controlling.
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*/
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public void setCurrentAnimation(AnimatorSet anim, Animator... childAnimations) {
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for (Animator childAnim : childAnimations) {
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if (childAnim == null) {
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continue;
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}
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if (mConfig.playbackController != null
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&& mConfig.playbackController.getTarget() == childAnim) {
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clearCurrentAnimation();
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break;
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} else if (mConfig.currentAnimation == childAnim) {
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clearCurrentAnimation();
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break;
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}
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}
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boolean reapplyNeeded = mConfig.currentAnimation != null;
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cancelAnimation();
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if (reapplyNeeded) {
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reapplyState();
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// Dispatch on transition end, so that any transient property is cleared.
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onStateTransitionEnd(mState);
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}
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mConfig.setAnimation(anim, null);
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}
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private void cancelAllStateElementAnimation() {
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if (mStateElementAnimators == null) {
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return;
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}
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for (Animator animator : mStateElementAnimators) {
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if (animator != null) {
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animator.cancel();
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}
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}
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}
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/**
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* Cancels a currently running gesture animation
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*/
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public void cancelStateElementAnimation(int index) {
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if (mStateElementAnimators == null) {
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return;
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}
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if (mStateElementAnimators[index] != null) {
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mStateElementAnimators[index].cancel();
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}
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}
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public Animator createStateElementAnimation(int index, float... values) {
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cancelStateElementAnimation(index);
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LauncherAppTransitionManager latm = mLauncher.getAppTransitionManager();
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if (mStateElementAnimators == null) {
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mStateElementAnimators = new Animator[latm.getStateElementAnimationsCount()];
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}
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Animator anim = latm.createStateElementAnimation(index, values);
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mStateElementAnimators[index] = anim;
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anim.addListener(new AnimatorListenerAdapter() {
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@Override
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public void onAnimationEnd(Animator animation) {
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mStateElementAnimators[index] = null;
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}
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});
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return anim;
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}
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private void clearCurrentAnimation() {
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if (mConfig.currentAnimation != null) {
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mConfig.currentAnimation.removeListener(mConfig);
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mConfig.currentAnimation = null;
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}
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mConfig.playbackController = null;
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}
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private class StartAnimRunnable implements Runnable {
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private final AnimatorSet mAnim;
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public StartAnimRunnable(AnimatorSet anim) {
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mAnim = anim;
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}
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@Override
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public void run() {
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if (mConfig.currentAnimation != mAnim) {
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return;
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}
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mAnim.start();
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}
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}
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private static class AnimationState extends StateAnimationConfig implements AnimatorListener {
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private static final StateAnimationConfig DEFAULT = new StateAnimationConfig();
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public AnimatorPlaybackController playbackController;
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public AnimatorSet currentAnimation;
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public LauncherState targetState;
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// Id to keep track of config changes, to tie an animation with the corresponding request
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public int changeId = 0;
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/**
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* Cancels the current animation and resets config variables.
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*/
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public void reset() {
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DEFAULT.copyTo(this);
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targetState = null;
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if (playbackController != null) {
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playbackController.getAnimationPlayer().cancel();
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playbackController.dispatchOnCancel();
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|
} else if (currentAnimation != null) {
|
|
currentAnimation.setDuration(0);
|
|
currentAnimation.cancel();
|
|
}
|
|
|
|
currentAnimation = null;
|
|
playbackController = null;
|
|
changeId++;
|
|
}
|
|
|
|
@Override
|
|
public void onAnimationEnd(Animator animation) {
|
|
if (playbackController != null && playbackController.getTarget() == animation) {
|
|
playbackController = null;
|
|
}
|
|
if (currentAnimation == animation) {
|
|
currentAnimation = null;
|
|
}
|
|
}
|
|
|
|
public void setAnimation(AnimatorSet animation, LauncherState targetState) {
|
|
currentAnimation = animation;
|
|
this.targetState = targetState;
|
|
currentAnimation.addListener(this);
|
|
}
|
|
|
|
@Override
|
|
public void onAnimationStart(Animator animator) { }
|
|
|
|
@Override
|
|
public void onAnimationCancel(Animator animator) { }
|
|
|
|
@Override
|
|
public void onAnimationRepeat(Animator animator) { }
|
|
}
|
|
|
|
public interface StateHandler {
|
|
|
|
/**
|
|
* Updates the UI to {@param state} without any animations
|
|
*/
|
|
void setState(LauncherState state);
|
|
|
|
/**
|
|
* Sets the UI to {@param state} by animating any changes.
|
|
*/
|
|
void setStateWithAnimation(
|
|
LauncherState toState, StateAnimationConfig config, PendingAnimation animation);
|
|
}
|
|
|
|
public interface StateListener {
|
|
|
|
void onStateTransitionStart(LauncherState toState);
|
|
void onStateTransitionComplete(LauncherState finalState);
|
|
}
|
|
}
|