content: /*
   * Copyright (C) 2016 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.server.wm;
  
  import static android.view.WindowManager.LayoutParams.TYPE_WALLPAPER;
  import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_LAYERS;
  import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_WALLPAPER_LIGHT;
  import static com.android.server.wm.WindowManagerDebugConfig.TAG_WITH_CLASS_NAME;
  import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM;
  
  import android.os.Bundle;
  import android.os.IBinder;
  import android.os.RemoteException;
  import android.util.Slog;
  import android.view.DisplayInfo;
  import android.view.animation.Animation;
  
  /**
   * A token that represents a set of wallpaper windows.
   */
  class WallpaperWindowToken extends WindowToken {
  
      private static final String TAG = TAG_WITH_CLASS_NAME ? "WallpaperWindowToken" : TAG_WM;
  
      WallpaperWindowToken(WindowManagerService service, IBinder token, boolean explicit,
              DisplayContent dc, boolean ownerCanManageAppTokens) {
          super(service, token, TYPE_WALLPAPER, explicit, dc, ownerCanManageAppTokens);
          dc.mWallpaperController.addWallpaperToken(this);
      }
  
      @Override
      void setExiting() {
          super.setExiting();
          mDisplayContent.mWallpaperController.removeWallpaperToken(this);
      }
  
      void hideWallpaperToken(boolean wasDeferred, String reason) {
          for (int j = mChildren.size() - 1; j >= 0; j--) {
              final WindowState wallpaper = mChildren.get(j);
              wallpaper.hideWallpaperWindow(wasDeferred, reason);
          }
          setHidden(true);
      }
  
      void sendWindowWallpaperCommand(
              String action, int x, int y, int z, Bundle extras, boolean sync) {
          for (int wallpaperNdx = mChildren.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) {
              final WindowState wallpaper = mChildren.get(wallpaperNdx);
              try {
                  wallpaper.mClient.dispatchWallpaperCommand(action, x, y, z, extras, sync);
                  // We only want to be synchronous with one wallpaper.
                  sync = false;
              } catch (RemoteException e) {
              }
          }
      }
  
      void updateWallpaperOffset(int dw, int dh, boolean sync) {
          final WallpaperController wallpaperController = mDisplayContent.mWallpaperController;
          for (int wallpaperNdx = mChildren.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) {
              final WindowState wallpaper = mChildren.get(wallpaperNdx);
              if (wallpaperController.updateWallpaperOffset(wallpaper, dw, dh, sync)) {
                  // We only want to be synchronous with one wallpaper.
                  sync = false;
              }
          }
      }
  
      void updateWallpaperVisibility(boolean visible) {
          final DisplayInfo displayInfo = mDisplayContent.getDisplayInfo();
          final int dw = displayInfo.logicalWidth;
          final int dh = displayInfo.logicalHeight;
  
          if (isHidden() == visible) {
              setHidden(!visible);
  
              // Need to do a layout to ensure the wallpaper now has the correct size.
              mDisplayContent.setLayoutNeeded();
          }
  
          final WallpaperController wallpaperController = mDisplayContent.mWallpaperController;
          for (int wallpaperNdx = mChildren.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) {
              final WindowState wallpaper = mChildren.get(wallpaperNdx);
              if (visible) {
                  wallpaperController.updateWallpaperOffset(wallpaper, dw, dh, false);
              }
  
              wallpaper.dispatchWallpaperVisibility(visible);
          }
      }
  
      /**
       * Starts {@param anim} on all children.
       */
      void startAnimation(Animation anim) {
          for (int ndx = mChildren.size() - 1; ndx >= 0; ndx--) {
              final WindowState windowState = mChildren.get(ndx);
              windowState.startAnimation(anim);
          }
      }
  
      void updateWallpaperWindows(boolean visible) {
  
          if (isHidden() == visible) {
              if (DEBUG_WALLPAPER_LIGHT) Slog.d(TAG,
                      "Wallpaper token " + token + " hidden=" + !visible);
              setHidden(!visible);
              // Need to do a layout to ensure the wallpaper now has the correct size.
              mDisplayContent.setLayoutNeeded();
          }
  
          final DisplayInfo displayInfo = mDisplayContent.getDisplayInfo();
          final int dw = displayInfo.logicalWidth;
          final int dh = displayInfo.logicalHeight;
          final WallpaperController wallpaperController = mDisplayContent.mWallpaperController;
          for (int wallpaperNdx = mChildren.size() - 1; wallpaperNdx >= 0; wallpaperNdx--) {
              final WindowState wallpaper = mChildren.get(wallpaperNdx);
  
              if (visible) {
                  wallpaperController.updateWallpaperOffset(wallpaper, dw, dh, false);
              }
  
              // First, make sure the client has the current visibility state.
              wallpaper.dispatchWallpaperVisibility(visible);
  
              if (DEBUG_LAYERS || DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "adjustWallpaper win "
                      + wallpaper);
          }
      }
  
      boolean hasVisibleNotDrawnWallpaper() {
          for (int j = mChildren.size() - 1; j >= 0; --j) {
              final WindowState wallpaper = mChildren.get(j);
              if (wallpaper.hasVisibleNotDrawnWallpaper()) {
                  return true;
              }
          }
          return false;
      }
  
      @Override
      public String toString() {
          if (stringName == null) {
              StringBuilder sb = new StringBuilder();
              sb.append("WallpaperWindowToken{");
              sb.append(Integer.toHexString(System.identityHashCode(this)));
              sb.append(" token="); sb.append(token); sb.append('}');
              stringName = sb.toString();
          }
          return stringName;
      }
  }
  