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.car.dialer.ui.common; 18 19 import android.app.ActionBar; 20 import android.app.Activity; 21 import android.graphics.drawable.ColorDrawable; 22 import android.graphics.drawable.Drawable; 23 import android.os.Bundle; 24 import android.view.View; 25 26 import androidx.annotation.NonNull; 27 import androidx.annotation.Nullable; 28 import androidx.fragment.app.Fragment; 29 30 import com.android.car.apps.common.util.Themes; 31 import com.android.car.dialer.R; 32 import com.android.car.dialer.ui.TelecomActivity; 33 34 /** The base class for top level dialer content {@link Fragment}s. */ 35 public abstract class DialerBaseFragment extends Fragment { 36 37 /** 38 * Interface for Dialer top level fragment's parent to implement. 39 */ 40 public interface DialerFragmentParent { 41 42 /** Sets the background drawable. */ setBackground(Drawable background)43 void setBackground(Drawable background); 44 45 /** Push a fragment to the back stack. Update action bar accordingly. */ pushContentFragment(Fragment fragment, String fragmentTag)46 void pushContentFragment(Fragment fragment, String fragmentTag); 47 } 48 49 @Override onCreate(Bundle savedInstanceState)50 public void onCreate(Bundle savedInstanceState) { 51 super.onCreate(savedInstanceState); 52 setHasOptionsMenu(true); 53 } 54 55 @Override onResume()56 public void onResume() { 57 setFullScreenBackground(); 58 59 Activity parentActivity = getActivity(); 60 ActionBar actionBar = parentActivity.getActionBar(); 61 if (actionBar != null) { 62 setupActionBar(actionBar); 63 } 64 65 super.onResume(); 66 } 67 68 /** 69 * Sets a fullscreen background to its parent Activity. 70 */ setFullScreenBackground()71 protected void setFullScreenBackground() { 72 Activity parentActivity = getActivity(); 73 if (parentActivity instanceof DialerFragmentParent) { 74 ((DialerFragmentParent) parentActivity).setBackground(getFullScreenBackgroundColor()); 75 } 76 } 77 78 /** Customizes the action bar. Can be overridden in subclasses. */ setupActionBar(@onNull ActionBar actionBar)79 protected void setupActionBar(@NonNull ActionBar actionBar) { 80 actionBar.setTitle(getActionBarTitle()); 81 actionBar.setCustomView(null); 82 setActionBarBackground(getContext().getDrawable(R.color.app_bar_background_color)); 83 } 84 85 /** 86 * Returns the full screen background for its parent Activity. Override this function to 87 * change the background. 88 */ getFullScreenBackgroundColor()89 protected Drawable getFullScreenBackgroundColor() { 90 return new ColorDrawable(Themes.getAttrColor(getContext(), android.R.attr.background)); 91 } 92 93 /** Push a fragment to the back stack. Update action bar accordingly. */ pushContentFragment(@onNull Fragment fragment, String fragmentTag)94 protected void pushContentFragment(@NonNull Fragment fragment, String fragmentTag) { 95 Activity parentActivity = getActivity(); 96 if (parentActivity instanceof DialerFragmentParent) { 97 ((DialerFragmentParent) parentActivity).pushContentFragment(fragment, fragmentTag); 98 } 99 } 100 101 /** Return the action bar title. */ getActionBarTitle()102 protected CharSequence getActionBarTitle() { 103 return getString(R.string.default_toolbar_title); 104 } 105 getTopBarHeight()106 protected int getTopBarHeight() { 107 View toolbar = getActivity().findViewById(R.id.car_toolbar); 108 109 int backStackEntryCount = 110 getActivity().getSupportFragmentManager().getBackStackEntryCount(); 111 int topBarHeight = Themes.getAttrDimensionPixelSize(getContext(), 112 android.R.attr.actionBarSize); 113 // Tabs are not child of the toolbar and tabs are visible. 114 if (toolbar.findViewById(R.id.tab_layout) == null && backStackEntryCount == 1) { 115 topBarHeight += topBarHeight; 116 } 117 return topBarHeight; 118 } 119 setActionBarBackground(@ullable Drawable drawable)120 protected final void setActionBarBackground(@Nullable Drawable drawable) { 121 Activity activity = getActivity(); 122 if (activity instanceof TelecomActivity) { 123 ((TelecomActivity) activity).setActionBarBackground(drawable); 124 } 125 } 126 } 127