1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.launcher3; 18 19 import static com.android.launcher3.util.DisplayController.CHANGE_ROTATION; 20 21 import android.content.Context; 22 import android.content.res.Configuration; 23 import android.graphics.Point; 24 import android.graphics.Rect; 25 import android.os.Bundle; 26 import android.view.ActionMode; 27 import android.view.Display; 28 import android.view.View; 29 30 import androidx.annotation.MainThread; 31 import androidx.annotation.NonNull; 32 import androidx.annotation.Nullable; 33 34 import com.android.launcher3.model.data.ItemInfo; 35 import com.android.launcher3.touch.ItemClickHandler; 36 import com.android.launcher3.util.ActivityOptionsWrapper; 37 import com.android.launcher3.util.DisplayController; 38 import com.android.launcher3.util.DisplayController.DisplayInfoChangeListener; 39 import com.android.launcher3.util.DisplayController.Info; 40 import com.android.launcher3.util.OnColorHintListener; 41 import com.android.launcher3.util.RunnableList; 42 import com.android.launcher3.util.Themes; 43 import com.android.launcher3.util.TraceHelper; 44 import com.android.launcher3.util.WallpaperColorHints; 45 import com.android.launcher3.util.WindowBounds; 46 47 /** 48 * Extension of BaseActivity allowing support for drag-n-drop 49 */ 50 @SuppressWarnings("NewApi") 51 public abstract class BaseDraggingActivity extends BaseActivity 52 implements OnColorHintListener, DisplayInfoChangeListener { 53 54 private static final String TAG = "BaseDraggingActivity"; 55 56 // When starting an action mode, setting this tag will cause the action mode to be cancelled 57 // automatically when user interacts with the launcher. 58 public static final Object AUTO_CANCEL_ACTION_MODE = new Object(); 59 60 private ActionMode mCurrentActionMode; 61 protected boolean mIsSafeModeEnabled; 62 63 private Runnable mOnStartCallback; 64 private final RunnableList mOnResumeCallbacks = new RunnableList(); 65 private int mThemeRes = R.style.AppTheme; 66 67 @Override onCreate(Bundle savedInstanceState)68 protected void onCreate(Bundle savedInstanceState) { 69 super.onCreate(savedInstanceState); 70 71 mIsSafeModeEnabled = TraceHelper.allowIpcs("isSafeMode", 72 () -> getPackageManager().isSafeMode()); 73 DisplayController.INSTANCE.get(this).addChangeListener(this); 74 75 // Update theme 76 WallpaperColorHints.get(this).registerOnColorHintsChangedListener(this); 77 int themeRes = Themes.getActivityThemeRes(this); 78 if (themeRes != mThemeRes) { 79 mThemeRes = themeRes; 80 setTheme(themeRes); 81 } 82 } 83 84 @Override onResume()85 protected void onResume() { 86 super.onResume(); 87 mOnResumeCallbacks.executeAllAndClear(); 88 } 89 addOnResumeCallback(Runnable callback)90 public void addOnResumeCallback(Runnable callback) { 91 mOnResumeCallbacks.add(callback); 92 } 93 94 @MainThread 95 @Override onColorHintsChanged(int colorHints)96 public void onColorHintsChanged(int colorHints) { 97 updateTheme(); 98 } 99 100 @Override onConfigurationChanged(Configuration newConfig)101 public void onConfigurationChanged(Configuration newConfig) { 102 super.onConfigurationChanged(newConfig); 103 updateTheme(); 104 } 105 updateTheme()106 private void updateTheme() { 107 if (mThemeRes != Themes.getActivityThemeRes(this)) { 108 recreate(); 109 } 110 } 111 112 @Override onActionModeStarted(ActionMode mode)113 public void onActionModeStarted(ActionMode mode) { 114 super.onActionModeStarted(mode); 115 mCurrentActionMode = mode; 116 } 117 118 @Override onActionModeFinished(ActionMode mode)119 public void onActionModeFinished(ActionMode mode) { 120 super.onActionModeFinished(mode); 121 mCurrentActionMode = null; 122 } 123 isInAutoCancelActionMode()124 protected boolean isInAutoCancelActionMode() { 125 return mCurrentActionMode != null && AUTO_CANCEL_ACTION_MODE == mCurrentActionMode.getTag(); 126 } 127 128 @Override finishAutoCancelActionMode()129 public boolean finishAutoCancelActionMode() { 130 if (isInAutoCancelActionMode()) { 131 mCurrentActionMode.finish(); 132 return true; 133 } 134 return false; 135 } 136 getOverviewPanel()137 public abstract <T extends View> T getOverviewPanel(); 138 getRootView()139 public abstract View getRootView(); 140 returnToHomescreen()141 public void returnToHomescreen() { 142 // no-op 143 } 144 145 @Override 146 @NonNull getActivityLaunchOptions(View v, @Nullable ItemInfo item)147 public ActivityOptionsWrapper getActivityLaunchOptions(View v, @Nullable ItemInfo item) { 148 ActivityOptionsWrapper wrapper = super.getActivityLaunchOptions(v, item); 149 addOnResumeCallback(wrapper.onEndCallback::executeAllAndDestroy); 150 return wrapper; 151 } 152 153 @Override makeDefaultActivityOptions(int splashScreenStyle)154 public ActivityOptionsWrapper makeDefaultActivityOptions(int splashScreenStyle) { 155 ActivityOptionsWrapper wrapper = super.makeDefaultActivityOptions(splashScreenStyle); 156 addOnResumeCallback(wrapper.onEndCallback::executeAllAndDestroy); 157 return wrapper; 158 } 159 160 @Override onStart()161 protected void onStart() { 162 super.onStart(); 163 164 if (mOnStartCallback != null) { 165 mOnStartCallback.run(); 166 mOnStartCallback = null; 167 } 168 } 169 170 @Override onDestroy()171 protected void onDestroy() { 172 super.onDestroy(); 173 DisplayController.INSTANCE.get(this).removeChangeListener(this); 174 WallpaperColorHints.get(this).unregisterOnColorsChangedListener(this); 175 } 176 runOnceOnStart(Runnable action)177 public void runOnceOnStart(Runnable action) { 178 mOnStartCallback = action; 179 } 180 clearRunOnceOnStartCallback()181 public void clearRunOnceOnStartCallback() { 182 mOnStartCallback = null; 183 } 184 onDeviceProfileInitiated()185 protected void onDeviceProfileInitiated() { 186 if (mDeviceProfile.isVerticalBarLayout()) { 187 mDeviceProfile.updateIsSeascape(this); 188 } 189 } 190 191 @Override onDisplayInfoChanged(Context context, Info info, int flags)192 public void onDisplayInfoChanged(Context context, Info info, int flags) { 193 if ((flags & CHANGE_ROTATION) != 0 && mDeviceProfile.updateIsSeascape(this)) { 194 reapplyUi(); 195 } 196 } 197 198 @Override getItemOnClickListener()199 public View.OnClickListener getItemOnClickListener() { 200 return ItemClickHandler.INSTANCE; 201 } 202 reapplyUi()203 protected abstract void reapplyUi(); 204 getMultiWindowDisplaySize()205 protected WindowBounds getMultiWindowDisplaySize() { 206 if (Utilities.ATLEAST_R) { 207 return WindowBounds.fromWindowMetrics(getWindowManager().getCurrentWindowMetrics()); 208 } 209 // Note: Calls to getSize() can't rely on our cached DefaultDisplay since it can return 210 // the app window size 211 Display display = getWindowManager().getDefaultDisplay(); 212 Point mwSize = new Point(); 213 display.getSize(mwSize); 214 return new WindowBounds(new Rect(0, 0, mwSize.x, mwSize.y), new Rect()); 215 } 216 217 @Override isAppBlockedForSafeMode()218 public boolean isAppBlockedForSafeMode() { 219 return mIsSafeModeEnabled; 220 } 221 } 222