1 /* 2 * Copyright (C) 2014 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.documentsui.picker; 18 19 import static com.android.documentsui.services.FileOperationService.OPERATION_DELETE; 20 import static com.android.documentsui.services.FileOperationService.OPERATION_COPY; 21 import static com.android.documentsui.services.FileOperationService.OPERATION_COMPRESS; 22 import static com.android.documentsui.services.FileOperationService.OPERATION_EXTRACT; 23 import static com.android.documentsui.services.FileOperationService.OPERATION_MOVE; 24 import static com.android.documentsui.services.FileOperationService.OPERATION_UNKNOWN; 25 26 import android.app.Activity; 27 import android.app.Fragment; 28 import android.app.FragmentManager; 29 import android.app.FragmentTransaction; 30 import android.os.Bundle; 31 import android.view.LayoutInflater; 32 import android.view.View; 33 import android.view.ViewGroup; 34 import android.widget.Button; 35 import android.widget.TextView; 36 37 import com.android.documentsui.BaseActivity; 38 import com.android.documentsui.Injector; 39 import com.android.documentsui.R; 40 import com.android.documentsui.base.DocumentInfo; 41 import com.android.documentsui.base.State; 42 import com.android.documentsui.services.FileOperationService.OpType; 43 44 /** 45 * Display pick confirmation bar, usually for selecting a directory. 46 */ 47 public class PickFragment extends Fragment { 48 public static final String TAG = "PickFragment"; 49 50 private static final String ACTION_KEY = "action"; 51 private static final String COPY_OPERATION_SUBTYPE_KEY = "copyOperationSubType"; 52 private static final String PICK_TARGET_KEY = "pickTarget"; 53 54 private final View.OnClickListener mPickListener = new View.OnClickListener() { 55 @Override 56 public void onClick(View v) { 57 mInjector.actions.pickDocument(mPickTarget); 58 } 59 }; 60 61 private final View.OnClickListener mCancelListener = new View.OnClickListener() { 62 @Override 63 public void onClick(View v) { 64 final BaseActivity activity = BaseActivity.get(PickFragment.this); 65 activity.setResult(Activity.RESULT_CANCELED); 66 activity.finish(); 67 } 68 }; 69 70 private Injector<ActionHandler<PickActivity>> mInjector; 71 private int mAction; 72 // Only legal values are OPERATION_COPY, OPERATION_COMPRESS, OPERATION_EXTRACT, 73 // OPERATION_MOVE, and unset (OPERATION_UNKNOWN). 74 private @OpType int mCopyOperationSubType = OPERATION_UNKNOWN; 75 private DocumentInfo mPickTarget; 76 private View mContainer; 77 private TextView mPick; 78 private TextView mCancel; 79 show(FragmentManager fm)80 public static void show(FragmentManager fm) { 81 // Fragment can be restored by FragmentManager automatically. 82 if (get(fm) != null) { 83 return; 84 } 85 86 final PickFragment fragment = new PickFragment(); 87 final FragmentTransaction ft = fm.beginTransaction(); 88 ft.replace(R.id.container_save, fragment, TAG); 89 ft.commitAllowingStateLoss(); 90 } 91 get(FragmentManager fm)92 public static PickFragment get(FragmentManager fm) { 93 return (PickFragment) fm.findFragmentByTag(TAG); 94 } 95 96 @Override onCreateView( LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)97 public View onCreateView( 98 LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 99 mContainer = inflater.inflate(R.layout.fragment_pick, container, false); 100 101 mPick = (TextView) mContainer.findViewById(android.R.id.button1); 102 mPick.setOnClickListener(mPickListener); 103 104 mCancel = (TextView) mContainer.findViewById(android.R.id.button2); 105 mCancel.setOnClickListener(mCancelListener); 106 107 updateView(); 108 return mContainer; 109 } 110 111 @Override onActivityCreated(Bundle savedInstanceState)112 public void onActivityCreated(Bundle savedInstanceState) { 113 super.onActivityCreated(savedInstanceState); 114 if (savedInstanceState != null) { 115 // Restore status 116 mAction = savedInstanceState.getInt(ACTION_KEY); 117 mCopyOperationSubType = 118 savedInstanceState.getInt(COPY_OPERATION_SUBTYPE_KEY); 119 mPickTarget = savedInstanceState.getParcelable(PICK_TARGET_KEY); 120 updateView(); 121 } 122 123 mInjector = ((PickActivity) getActivity()).getInjector(); 124 } 125 126 @Override onSaveInstanceState(final Bundle outState)127 public void onSaveInstanceState(final Bundle outState) { 128 super.onSaveInstanceState(outState); 129 outState.putInt(ACTION_KEY, mAction); 130 outState.putInt(COPY_OPERATION_SUBTYPE_KEY, mCopyOperationSubType); 131 outState.putParcelable(PICK_TARGET_KEY, mPickTarget); 132 } 133 134 /** 135 * @param action Which action defined in State is the picker shown for. 136 */ setPickTarget( int action, @OpType int copyOperationSubType, DocumentInfo pickTarget)137 public void setPickTarget( 138 int action, @OpType int copyOperationSubType, DocumentInfo pickTarget) { 139 assert(copyOperationSubType != OPERATION_DELETE); 140 141 mAction = action; 142 mCopyOperationSubType = copyOperationSubType; 143 mPickTarget = pickTarget; 144 if (mContainer != null) { 145 updateView(); 146 } 147 } 148 149 /** 150 * Applies the state of fragment to the view components. 151 */ updateView()152 private void updateView() { 153 switch (mAction) { 154 case State.ACTION_OPEN_TREE: 155 mPick.setText(R.string.button_select); 156 mCancel.setVisibility(View.GONE); 157 break; 158 case State.ACTION_PICK_COPY_DESTINATION: 159 int titleId; 160 switch (mCopyOperationSubType) { 161 case OPERATION_COPY: 162 titleId = R.string.button_copy; 163 break; 164 case OPERATION_COMPRESS: 165 titleId = R.string.button_compress; 166 break; 167 case OPERATION_EXTRACT: 168 titleId = R.string.button_extract; 169 break; 170 case OPERATION_MOVE: 171 titleId = R.string.button_move; 172 break; 173 default: 174 throw new UnsupportedOperationException(); 175 } 176 mPick.setText(titleId); 177 mCancel.setVisibility(View.VISIBLE); 178 break; 179 default: 180 mContainer.setVisibility(View.GONE); 181 return; 182 } 183 184 if (mPickTarget != null && ( 185 mAction == State.ACTION_OPEN_TREE || 186 mPickTarget.isCreateSupported())) { 187 mContainer.setVisibility(View.VISIBLE); 188 } else { 189 mContainer.setVisibility(View.GONE); 190 } 191 } 192 } 193