content: /*
   * Copyright (C) 2019 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.android.launcher3.uioverrides.touchcontrollers;
  
  import static com.android.launcher3.LauncherState.NORMAL;
  import static com.android.launcher3.LauncherState.QUICK_SWITCH;
  import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_ALL_APPS_FADE;
  import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_FADE;
  import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_SCALE;
  import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_TRANSLATE_Y;
  import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_VERTICAL_PROGRESS;
  import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_FADE;
  import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_TRANSLATE;
  import static com.android.launcher3.anim.Interpolators.ACCEL_2;
  import static com.android.launcher3.anim.Interpolators.DEACCEL_2;
  import static com.android.launcher3.anim.Interpolators.INSTANT;
  import static com.android.launcher3.anim.Interpolators.LINEAR;
  import static com.android.launcher3.util.SystemUiController.UI_STATE_OVERVIEW;
  import static com.android.quickstep.views.RecentsView.UPDATE_SYSUI_FLAGS_THRESHOLD;
  import static com.android.systemui.shared.system.ActivityManagerWrapper.CLOSE_SYSTEM_WINDOWS_REASON_RECENTS;
  import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_OVERVIEW_DISABLED;
  
  import android.view.MotionEvent;
  
  import androidx.annotation.Nullable;
  
  import com.android.launcher3.Launcher;
  import com.android.launcher3.LauncherState;
  import com.android.launcher3.LauncherStateManager;
  import com.android.launcher3.Utilities;
  import com.android.launcher3.anim.AnimatorSetBuilder;
  import com.android.launcher3.touch.AbstractStateChangeTouchController;
  import com.android.launcher3.touch.SingleAxisSwipeDetector;
  import com.android.launcher3.userevent.nano.LauncherLogProto;
  import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Direction;
  import com.android.quickstep.OverviewInteractionState;
  import com.android.quickstep.SysUINavigationMode;
  import com.android.quickstep.SysUINavigationMode.Mode;
  import com.android.quickstep.views.RecentsView;
  import com.android.quickstep.views.TaskView;
  import com.android.systemui.shared.system.ActivityManagerWrapper;
  
  /**
   * Handles quick switching to a recent task from the home screen.
   */
  public class QuickSwitchTouchController extends AbstractStateChangeTouchController {
  
      private @Nullable TaskView mTaskToLaunch;
  
      public QuickSwitchTouchController(Launcher launcher) {
          this(launcher, SingleAxisSwipeDetector.HORIZONTAL);
      }
  
      protected QuickSwitchTouchController(Launcher l, SingleAxisSwipeDetector.Direction dir) {
          super(l, dir);
      }
  
      @Override
      protected boolean canInterceptTouch(MotionEvent ev) {
          if (mCurrentAnimation != null) {
              return true;
          }
          if (!mLauncher.isInState(LauncherState.NORMAL)) {
              return false;
          }
          if ((ev.getEdgeFlags() & Utilities.EDGE_NAV_BAR) == 0) {
              return false;
          }
          return true;
      }
  
      @Override
      protected LauncherState getTargetState(LauncherState fromState, boolean isDragTowardPositive) {
          int stateFlags = OverviewInteractionState.INSTANCE.get(mLauncher).getSystemUiStateFlags();
          if ((stateFlags & SYSUI_STATE_OVERVIEW_DISABLED) != 0) {
              return NORMAL;
          }
          return isDragTowardPositive ? QUICK_SWITCH : NORMAL;
      }
  
      @Override
      public void onDragStart(boolean start) {
          super.onDragStart(start);
          mStartContainerType = LauncherLogProto.ContainerType.NAVBAR;
          mTaskToLaunch = mLauncher.<RecentsView>getOverviewPanel().getTaskViewAt(0);
          ActivityManagerWrapper.getInstance()
              .closeSystemWindows(CLOSE_SYSTEM_WINDOWS_REASON_RECENTS);
      }
  
      @Override
      protected void onSwipeInteractionCompleted(LauncherState targetState, int logAction) {
          super.onSwipeInteractionCompleted(targetState, logAction);
          mTaskToLaunch = null;
      }
  
      @Override
      protected float initCurrentAnimation(int animComponents) {
          AnimatorSetBuilder animatorSetBuilder = new AnimatorSetBuilder();
          setupInterpolators(animatorSetBuilder);
          long accuracy = (long) (getShiftRange() * 2);
          mCurrentAnimation = mLauncher.getStateManager().createAnimationToNewWorkspace(mToState,
                  animatorSetBuilder, accuracy, this::clearState, LauncherStateManager.ANIM_ALL);
          mCurrentAnimation.getAnimationPlayer().addUpdateListener(valueAnimator -> {
              updateFullscreenProgress((Float) valueAnimator.getAnimatedValue());
          });
          return 1 / getShiftRange();
      }
  
      private void setupInterpolators(AnimatorSetBuilder animatorSetBuilder) {
          animatorSetBuilder.setInterpolator(ANIM_WORKSPACE_FADE, DEACCEL_2);
          animatorSetBuilder.setInterpolator(ANIM_ALL_APPS_FADE, DEACCEL_2);
          if (SysUINavigationMode.getMode(mLauncher) == Mode.NO_BUTTON) {
              // Overview lives to the left of workspace, so translate down later than over
              animatorSetBuilder.setInterpolator(ANIM_WORKSPACE_TRANSLATE, ACCEL_2);
              animatorSetBuilder.setInterpolator(ANIM_VERTICAL_PROGRESS, ACCEL_2);
              animatorSetBuilder.setInterpolator(ANIM_OVERVIEW_SCALE, ACCEL_2);
              animatorSetBuilder.setInterpolator(ANIM_OVERVIEW_TRANSLATE_Y, ACCEL_2);
              animatorSetBuilder.setInterpolator(ANIM_OVERVIEW_FADE, INSTANT);
          } else {
              animatorSetBuilder.setInterpolator(ANIM_WORKSPACE_TRANSLATE, LINEAR);
              animatorSetBuilder.setInterpolator(ANIM_VERTICAL_PROGRESS, LINEAR);
          }
      }
  
      @Override
      protected void updateProgress(float progress) {
          super.updateProgress(progress);
          updateFullscreenProgress(Utilities.boundToRange(progress, 0, 1));
      }
  
      private void updateFullscreenProgress(float progress) {
          if (mTaskToLaunch != null) {
              mTaskToLaunch.setFullscreenProgress(progress);
              int sysuiFlags = progress > UPDATE_SYSUI_FLAGS_THRESHOLD
                      ? mTaskToLaunch.getThumbnail().getSysUiStatusNavFlags()
                      : 0;
              mLauncher.getSystemUiController().updateUiState(UI_STATE_OVERVIEW, sysuiFlags);
          }
      }
  
      @Override
      protected float getShiftRange() {
          return mLauncher.getDeviceProfile().widthPx / 2f;
      }
  
      @Override
      protected int getLogContainerTypeForNormalState(MotionEvent ev) {
          return LauncherLogProto.ContainerType.NAVBAR;
      }
  
      @Override
      protected int getDirectionForLog() {
          return Utilities.isRtl(mLauncher.getResources()) ? Direction.LEFT : Direction.RIGHT;
      }
  }
  