1 /* 2 * Copyright (C) 2011 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 package com.android.browser; 17 18 import android.animation.Animator; 19 import android.animation.Animator.AnimatorListener; 20 import android.animation.AnimatorSet; 21 import android.animation.ObjectAnimator; 22 import android.app.Fragment; 23 import android.app.LoaderManager.LoaderCallbacks; 24 import android.content.ContentResolver; 25 import android.content.ContentUris; 26 import android.content.Context; 27 import android.content.CursorLoader; 28 import android.content.Loader; 29 import android.database.Cursor; 30 import android.graphics.Bitmap; 31 import android.graphics.BitmapFactory; 32 import android.net.Uri; 33 import android.os.Bundle; 34 import android.view.ContextMenu; 35 import android.view.ContextMenu.ContextMenuInfo; 36 import android.view.LayoutInflater; 37 import android.view.MenuInflater; 38 import android.view.MenuItem; 39 import android.view.View; 40 import android.view.View.MeasureSpec; 41 import android.view.ViewGroup; 42 import android.widget.AdapterView; 43 import android.widget.AdapterView.AdapterContextMenuInfo; 44 import android.widget.AdapterView.OnItemClickListener; 45 import android.widget.GridView; 46 import android.widget.ImageView; 47 import android.widget.ResourceCursorAdapter; 48 import android.widget.TextView; 49 50 import com.android.browser.provider.SnapshotProvider.Snapshots; 51 52 import java.text.DateFormat; 53 import java.util.Date; 54 55 public class BrowserSnapshotPage extends Fragment implements 56 LoaderCallbacks<Cursor>, OnItemClickListener { 57 58 public static final String EXTRA_ANIMATE_ID = "animate_id"; 59 60 private static final int LOADER_SNAPSHOTS = 1; 61 private static final String[] PROJECTION = new String[] { 62 Snapshots._ID, 63 Snapshots.TITLE, 64 Snapshots.VIEWSTATE_SIZE, 65 Snapshots.THUMBNAIL, 66 Snapshots.FAVICON, 67 Snapshots.URL, 68 Snapshots.DATE_CREATED, 69 }; 70 private static final int SNAPSHOT_ID = 0; 71 private static final int SNAPSHOT_TITLE = 1; 72 private static final int SNAPSHOT_VIEWSTATE_SIZE = 2; 73 private static final int SNAPSHOT_THUMBNAIL = 3; 74 private static final int SNAPSHOT_FAVICON = 4; 75 private static final int SNAPSHOT_URL = 5; 76 private static final int SNAPSHOT_DATE_CREATED = 6; 77 78 GridView mGrid; 79 View mEmpty; 80 SnapshotAdapter mAdapter; 81 CombinedBookmarksCallbacks mCallback; 82 long mAnimateId; 83 84 @Override 85 public void onCreate(Bundle savedInstanceState) { 86 super.onCreate(savedInstanceState); 87 mCallback = (CombinedBookmarksCallbacks) getActivity(); 88 mAnimateId = getArguments().getLong(EXTRA_ANIMATE_ID); 89 } 90 91 @Override 92 public View onCreateView(LayoutInflater inflater, ViewGroup container, 93 Bundle savedInstanceState) { 94 View view = inflater.inflate(R.layout.snapshots, container, false); 95 mEmpty = view.findViewById(android.R.id.empty); 96 mGrid = (GridView) view.findViewById(R.id.grid); 97 setupGrid(inflater); 98 getLoaderManager().initLoader(LOADER_SNAPSHOTS, null, this); 99 return view; 100 } 101 102 @Override 103 public void onDestroyView() { 104 super.onDestroyView(); 105 getLoaderManager().destroyLoader(LOADER_SNAPSHOTS); 106 if (mAdapter != null) { 107 mAdapter.changeCursor(null); 108 mAdapter = null; 109 } 110 } 111 112 void setupGrid(LayoutInflater inflater) { 113 View item = inflater.inflate(R.layout.snapshot_item, mGrid, false); 114 int mspec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 115 item.measure(mspec, mspec); 116 int width = item.getMeasuredWidth(); 117 mGrid.setColumnWidth(width); 118 mGrid.setOnItemClickListener(this); 119 mGrid.setOnCreateContextMenuListener(this); 120 } 121 122 @Override 123 public Loader<Cursor> onCreateLoader(int id, Bundle args) { 124 if (id == LOADER_SNAPSHOTS) { 125 return new CursorLoader(getActivity(), 126 Snapshots.CONTENT_URI, PROJECTION, 127 null, null, Snapshots.DATE_CREATED + " DESC"); 128 } 129 return null; 130 } 131 132 @Override 133 public void onLoadFinished(Loader<Cursor> loader, Cursor data) { 134 if (loader.getId() == LOADER_SNAPSHOTS) { 135 if (mAdapter == null) { 136 mAdapter = new SnapshotAdapter(getActivity(), data); 137 mGrid.setAdapter(mAdapter); 138 } else { 139 mAdapter.changeCursor(data); 140 } 141 if (mAnimateId > 0) { 142 mAdapter.animateIn(mAnimateId); 143 mAnimateId = 0; 144 getArguments().remove(EXTRA_ANIMATE_ID); 145 } 146 boolean empty = mAdapter.isEmpty(); 147 mGrid.setVisibility(empty ? View.GONE : View.VISIBLE); 148 mEmpty.setVisibility(empty ? View.VISIBLE : View.GONE); 149 } 150 } 151 152 @Override 153 public void onLoaderReset(Loader<Cursor> loader) { 154 } 155 156 @Override 157 public void onCreateContextMenu(ContextMenu menu, View v, 158 ContextMenuInfo menuInfo) { 159 MenuInflater inflater = getActivity().getMenuInflater(); 160 inflater.inflate(R.menu.snapshots_context, menu); 161 // Create the header, re-use BookmarkItem (has the layout we want) 162 BookmarkItem header = new BookmarkItem(getActivity()); 163 header.setEnableScrolling(true); 164 AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo; 165 populateBookmarkItem(mAdapter.getItem(info.position), header); 166 menu.setHeaderView(header); 167 } 168 169 private void populateBookmarkItem(Cursor cursor, BookmarkItem item) { 170 item.setName(cursor.getString(SNAPSHOT_TITLE)); 171 item.setUrl(cursor.getString(SNAPSHOT_URL)); 172 item.setFavicon(getBitmap(cursor, SNAPSHOT_FAVICON)); 173 } 174 175 static Bitmap getBitmap(Cursor cursor, int columnIndex) { 176 byte[] data = cursor.getBlob(columnIndex); 177 if (data == null) { 178 return null; 179 } 180 return BitmapFactory.decodeByteArray(data, 0, data.length); 181 } 182 183 @Override 184 public boolean onContextItemSelected(MenuItem item) { 185 if (item.getItemId() == R.id.delete_context_menu_id) { 186 AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo(); 187 deleteSnapshot(info.id); 188 return true; 189 } 190 return super.onContextItemSelected(item); 191 } 192 193 void deleteSnapshot(long id) { 194 final Uri uri = ContentUris.withAppendedId(Snapshots.CONTENT_URI, id); 195 final ContentResolver cr = getActivity().getContentResolver(); 196 new Thread() { 197 @Override 198 public void run() { 199 cr.delete(uri, null, null); 200 } 201 }.start(); 202 203 } 204 205 @Override 206 public void onItemClick(AdapterView<?> parent, View view, int position, 207 long id) { 208 mCallback.openSnapshot(id); 209 } 210 211 private static class SnapshotAdapter extends ResourceCursorAdapter { 212 private long mAnimateId; 213 private AnimatorSet mAnimation; 214 private View mAnimationTarget; 215 216 public SnapshotAdapter(Context context, Cursor c) { 217 super(context, R.layout.snapshot_item, c, 0); 218 mAnimation = new AnimatorSet(); 219 mAnimation.playTogether( 220 ObjectAnimator.ofFloat(null, View.SCALE_X, 0f, 1f), 221 ObjectAnimator.ofFloat(null, View.SCALE_Y, 0f, 1f)); 222 mAnimation.setStartDelay(100); 223 mAnimation.setDuration(400); 224 mAnimation.addListener(new AnimatorListener() { 225 226 @Override 227 public void onAnimationStart(Animator animation) { 228 } 229 230 @Override 231 public void onAnimationRepeat(Animator animation) { 232 } 233 234 @Override 235 public void onAnimationEnd(Animator animation) { 236 mAnimateId = 0; 237 mAnimationTarget = null; 238 } 239 240 @Override 241 public void onAnimationCancel(Animator animation) { 242 } 243 }); 244 } 245 246 public void animateIn(long id) { 247 mAnimateId = id; 248 } 249 250 @Override 251 public void bindView(View view, Context context, Cursor cursor) { 252 long id = cursor.getLong(SNAPSHOT_ID); 253 if (id == mAnimateId) { 254 if (mAnimationTarget != view) { 255 float scale = 0f; 256 if (mAnimationTarget != null) { 257 scale = mAnimationTarget.getScaleX(); 258 mAnimationTarget.setScaleX(1f); 259 mAnimationTarget.setScaleY(1f); 260 } 261 view.setScaleX(scale); 262 view.setScaleY(scale); 263 } 264 mAnimation.setTarget(view); 265 mAnimationTarget = view; 266 if (!mAnimation.isRunning()) { 267 mAnimation.start(); 268 } 269 270 } 271 ImageView thumbnail = (ImageView) view.findViewById(R.id.thumb); 272 byte[] thumbBlob = cursor.getBlob(SNAPSHOT_THUMBNAIL); 273 if (thumbBlob == null) { 274 thumbnail.setImageResource(R.drawable.browser_thumbnail); 275 } else { 276 Bitmap thumbBitmap = BitmapFactory.decodeByteArray( 277 thumbBlob, 0, thumbBlob.length); 278 thumbnail.setImageBitmap(thumbBitmap); 279 } 280 TextView title = (TextView) view.findViewById(R.id.title); 281 title.setText(cursor.getString(SNAPSHOT_TITLE)); 282 TextView size = (TextView) view.findViewById(R.id.size); 283 if (size != null) { 284 int stateLen = cursor.getInt(SNAPSHOT_VIEWSTATE_SIZE); 285 size.setText(String.format("%.2fMB", stateLen / 1024f / 1024f)); 286 } 287 long timestamp = cursor.getLong(SNAPSHOT_DATE_CREATED); 288 TextView date = (TextView) view.findViewById(R.id.date); 289 DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.SHORT); 290 date.setText(dateFormat.format(new Date(timestamp))); 291 } 292 293 @Override 294 public Cursor getItem(int position) { 295 return (Cursor) super.getItem(position); 296 } 297 } 298 299 } 300
