content: /*
   * Copyright (C) 2017 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.states;
  
  import static com.android.launcher3.LauncherAnimUtils.ALL_APPS_TRANSITION_MS;
  import static com.android.launcher3.anim.Interpolators.DEACCEL_2;
  
  import com.android.launcher3.AbstractFloatingView;
  import com.android.launcher3.Launcher;
  import com.android.launcher3.LauncherState;
  import com.android.launcher3.allapps.AllAppsContainerView;
  import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
  import com.android.quickstep.SysUINavigationMode;
  
  /**
   * Definition for AllApps state
   */
  public class AllAppsState extends LauncherState {
  
      private static final int STATE_FLAGS = FLAG_DISABLE_ACCESSIBILITY;
  
      private static final PageAlphaProvider PAGE_ALPHA_PROVIDER = new PageAlphaProvider(DEACCEL_2) {
          @Override
          public float getPageAlpha(int pageIndex) {
              return 0;
          }
      };
  
      public AllAppsState(int id) {
          super(id, ContainerType.ALLAPPS, ALL_APPS_TRANSITION_MS, STATE_FLAGS);
      }
  
      @Override
      public void onStateEnabled(Launcher launcher) {
          AbstractFloatingView.closeAllOpenViews(launcher);
          dispatchWindowStateChanged(launcher);
      }
  
      @Override
      public String getDescription(Launcher launcher) {
          AllAppsContainerView appsView = launcher.getAppsView();
          return appsView.getDescription();
      }
  
      @Override
      public float getVerticalProgress(Launcher launcher) {
          return 0f;
      }
  
      @Override
      public ScaleAndTranslation getWorkspaceScaleAndTranslation(Launcher launcher) {
          ScaleAndTranslation scaleAndTranslation = LauncherState.OVERVIEW
                  .getWorkspaceScaleAndTranslation(launcher);
          if (SysUINavigationMode.getMode(launcher) == SysUINavigationMode.Mode.NO_BUTTON) {
              float normalScale = 1;
              // Scale down halfway to where we'd be in overview, to prepare for a potential pause.
              scaleAndTranslation.scale = (scaleAndTranslation.scale + normalScale) / 2;
          } else {
              scaleAndTranslation.scale = 1;
          }
          return scaleAndTranslation;
      }
  
      @Override
      public PageAlphaProvider getWorkspacePageAlphaProvider(Launcher launcher) {
          return PAGE_ALPHA_PROVIDER;
      }
  
      @Override
      public int getVisibleElements(Launcher launcher) {
          return ALL_APPS_HEADER | ALL_APPS_HEADER_EXTRA | ALL_APPS_CONTENT;
      }
  
      @Override
      public ScaleAndTranslation getOverviewScaleAndTranslation(Launcher launcher) {
          float slightParallax = -launcher.getDeviceProfile().allAppsCellHeightPx * 0.3f;
          return new ScaleAndTranslation(0.9f, 0f, slightParallax);
      }
  
      @Override
      public LauncherState getHistoryForState(LauncherState previousState) {
          return previousState == OVERVIEW ? OVERVIEW : NORMAL;
      }
  }
  