1 /* 2 * Copyright (C) 2015 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 android.support.v17.leanback.widget; 18 19 import android.app.Activity; 20 import android.content.Intent; 21 import android.graphics.Color; 22 import android.os.Bundle; 23 import android.support.v17.leanback.test.R; 24 import android.support.v7.widget.RecyclerView; 25 import android.util.Log; 26 import android.view.View; 27 import android.view.View.OnFocusChangeListener; 28 import android.view.ViewGroup; 29 import android.widget.TextView; 30 31 import java.util.ArrayList; 32 33 public class GridActivity extends Activity { 34 35 private static final String TAG = "GridActivity"; 36 37 interface ImportantForAccessibilityListener { 38 void onImportantForAccessibilityChanged(View view, int newValue); 39 } 40 41 interface AdapterListener { 42 void onBind(RecyclerView.ViewHolder vh, int position); 43 } 44 45 public static final String EXTRA_LAYOUT_RESOURCE_ID = "layoutResourceId"; 46 public static final String EXTRA_NUM_ITEMS = "numItems"; 47 public static final String EXTRA_ITEMS = "items"; 48 public static final String EXTRA_ITEMS_FOCUSABLE = "itemsFocusable"; 49 public static final String EXTRA_STAGGERED = "staggered"; 50 public static final String EXTRA_REQUEST_LAYOUT_ONFOCUS = "requestLayoutOnFocus"; 51 public static final String EXTRA_REQUEST_FOCUS_ONLAYOUT = "requstFocusOnLayout"; 52 public static final String EXTRA_CHILD_LAYOUT_ID = "childLayoutId"; 53 public static final String EXTRA_SECONDARY_SIZE_ZERO = "secondarySizeZero"; 54 public static final String EXTRA_UPDATE_SIZE = "updateSize"; 55 public static final String EXTRA_LAYOUT_MARGINS = "layoutMargins"; 56 public static final String EXTRA_NINEPATCH_SHADOW = "NINEPATCH_SHADOW"; 57 public static final String EXTRA_HAS_STABLE_IDS = "hasStableIds"; 58 59 /** 60 * Class that implements GridWidgetTest.ViewTypeProvider for creating different 61 * view types for each position. 62 */ 63 public static final String EXTRA_VIEWTYPEPROVIDER_CLASS = "viewtype_class"; 64 /** 65 * Class that implements GridWidgetTest.ItemAlignmentFacetProvider for creating different 66 * ItemAlignmentFacet for each ViewHolder. 67 */ 68 public static final String EXTRA_ITEMALIGNMENTPROVIDER_CLASS = "itemalignment_class"; 69 /** 70 * Class that implements GridWidgetTest.ItemAlignmentFacetProvider for creating different 71 * ItemAlignmentFacet for a given viewType. 72 */ 73 public static final String EXTRA_ITEMALIGNMENTPROVIDER_VIEWTYPE_CLASS = 74 "itemalignment_viewtype_class"; 75 public static final String SELECT_ACTION = "android.test.leanback.widget.SELECT"; 76 77 static final int DEFAULT_NUM_ITEMS = 100; 78 static final boolean DEFAULT_STAGGERED = true; 79 static final boolean DEFAULT_REQUEST_LAYOUT_ONFOCUS = false; 80 static final boolean DEFAULT_REQUEST_FOCUS_ONLAYOUT = false; 81 82 private static final boolean DEBUG = false; 83 84 int mLayoutId; 85 int mOrientation; 86 int mNumItems; 87 int mChildLayout; 88 boolean mStaggered; 89 boolean mRequestLayoutOnFocus; 90 boolean mRequestFocusOnLayout; 91 boolean mSecondarySizeZero; 92 GridWidgetTest.ViewTypeProvider mViewTypeProvider; 93 GridWidgetTest.ItemAlignmentFacetProvider mAlignmentProvider; 94 GridWidgetTest.ItemAlignmentFacetProvider mAlignmentViewTypeProvider; 95 AdapterListener mAdapterListener; 96 boolean mUpdateSize = true; 97 boolean mHasStableIds; 98 99 int[] mGridViewLayoutSize; 100 BaseGridView mGridView; 101 int[] mItemLengths; 102 boolean[] mItemFocusables; 103 int[] mLayoutMargins; 104 int mNinePatchShadow; 105 106 private int mBoundCount; 107 ImportantForAccessibilityListener mImportantForAccessibilityListener; 108 109 private View createView() { 110 111 View view = getLayoutInflater().inflate(mLayoutId, null, false); 112 mGridView = (BaseGridView) view.findViewById(R.id.gridview); 113 mOrientation = mGridView instanceof HorizontalGridView ? BaseGridView.HORIZONTAL : 114 BaseGridView.VERTICAL; 115 mGridView.setWindowAlignment(BaseGridView.WINDOW_ALIGN_BOTH_EDGE); 116 mGridView.setWindowAlignmentOffsetPercent(35); 117 mGridView.setOnChildSelectedListener(new OnChildSelectedListener() { 118 @Override 119 public void onChildSelected(ViewGroup parent, View view, int position, long id) { 120 if (DEBUG) Log.d(TAG, "onChildSelected position=" + position + " id="+id); 121 } 122 }); 123 if (mNinePatchShadow != 0) { 124 mGridView.setLayoutMode(ViewGroup.LAYOUT_MODE_OPTICAL_BOUNDS); 125 } 126 return view; 127 } 128 129 @Override 130 protected void onCreate(Bundle savedInstanceState) { 131 Intent intent = getIntent(); 132 133 mLayoutId = intent.getIntExtra(EXTRA_LAYOUT_RESOURCE_ID, R.layout.horizontal_grid); 134 mChildLayout = intent.getIntExtra(EXTRA_CHILD_LAYOUT_ID, -1); 135 mStaggered = intent.getBooleanExtra(EXTRA_STAGGERED, DEFAULT_STAGGERED); 136 mRequestLayoutOnFocus = intent.getBooleanExtra(EXTRA_REQUEST_LAYOUT_ONFOCUS, 137 DEFAULT_REQUEST_LAYOUT_ONFOCUS); 138 mRequestFocusOnLayout = intent.getBooleanExtra(EXTRA_REQUEST_FOCUS_ONLAYOUT, 139 DEFAULT_REQUEST_FOCUS_ONLAYOUT); 140 mUpdateSize = intent.getBooleanExtra(EXTRA_UPDATE_SIZE, true); 141 mSecondarySizeZero = intent.getBooleanExtra(EXTRA_SECONDARY_SIZE_ZERO, false); 142 mItemLengths = intent.getIntArrayExtra(EXTRA_ITEMS); 143 mHasStableIds = intent.getBooleanExtra(EXTRA_HAS_STABLE_IDS, false); 144 mItemFocusables = intent.getBooleanArrayExtra(EXTRA_ITEMS_FOCUSABLE); 145 mLayoutMargins = intent.getIntArrayExtra(EXTRA_LAYOUT_MARGINS); 146 String alignmentClass = intent.getStringExtra(EXTRA_ITEMALIGNMENTPROVIDER_CLASS); 147 String alignmentViewTypeClass = 148 intent.getStringExtra(EXTRA_ITEMALIGNMENTPROVIDER_VIEWTYPE_CLASS); 149 String viewTypeClass = intent.getStringExtra(EXTRA_VIEWTYPEPROVIDER_CLASS); 150 mNinePatchShadow = intent.getIntExtra(EXTRA_NINEPATCH_SHADOW, 0); 151 try { 152 if (alignmentClass != null) { 153 mAlignmentProvider = (GridWidgetTest.ItemAlignmentFacetProvider) 154 Class.forName(alignmentClass).newInstance(); 155 } 156 if (alignmentViewTypeClass != null) { 157 mAlignmentViewTypeProvider = (GridWidgetTest.ItemAlignmentFacetProvider) 158 Class.forName(alignmentViewTypeClass).newInstance(); 159 } 160 if (viewTypeClass != null) { 161 mViewTypeProvider = (GridWidgetTest.ViewTypeProvider) 162 Class.forName(viewTypeClass).newInstance(); 163 } 164 } catch (ClassNotFoundException ex) { 165 throw new RuntimeException(ex); 166 } catch (InstantiationException ex) { 167 throw new RuntimeException(ex); 168 } catch (IllegalAccessException ex) { 169 throw new RuntimeException(ex); 170 } 171 172 super.onCreate(savedInstanceState); 173 174 if (DEBUG) Log.v(TAG, "onCreate " + this); 175 176 RecyclerView.Adapter adapter = new MyAdapter(); 177 adapter.setHasStableIds(mHasStableIds); 178 179 View view = createView(); 180 if (mItemLengths == null) { 181 mNumItems = intent.getIntExtra(EXTRA_NUM_ITEMS, DEFAULT_NUM_ITEMS); 182 mItemLengths = new int[mNumItems]; 183 for (int i = 0; i < mItemLengths.length; i++) { 184 if (mOrientation == BaseGridView.HORIZONTAL) { 185 mItemLengths[i] = mStaggered ? (int)(Math.random() * 180) + 180 : 240; 186 } else { 187 mItemLengths[i] = mStaggered ? (int)(Math.random() * 120) + 120 : 160; 188 } 189 } 190 } else { 191 mNumItems = mItemLengths.length; 192 } 193 194 mGridView.setAdapter(adapter); 195 setContentView(view); 196 } 197 198 void rebindToNewAdapter() { 199 mGridView.setAdapter(new MyAdapter()); 200 } 201 202 @Override 203 protected void onNewIntent(Intent intent) { 204 if (DEBUG) Log.v(TAG, "onNewIntent " + intent+ " "+this); 205 if (intent.getAction().equals(SELECT_ACTION)) { 206 int position = intent.getIntExtra("SELECT_POSITION", -1); 207 if (position >= 0) { 208 mGridView.setSelectedPosition(position); 209 } 210 } 211 super.onNewIntent(intent); 212 } 213 214 private OnFocusChangeListener mItemFocusChangeListener = new OnFocusChangeListener() { 215 216 @Override 217 public void onFocusChange(View v, boolean hasFocus) { 218 if (hasFocus) { 219 v.setBackgroundColor(Color.YELLOW); 220 } else { 221 v.setBackgroundColor(Color.LTGRAY); 222 } 223 if (mRequestLayoutOnFocus) { 224 RecyclerView.ViewHolder vh = mGridView.getChildViewHolder(v); 225 int position = vh.getAdapterPosition(); 226 updateSize(v, position); 227 } 228 } 229 }; 230 231 private OnFocusChangeListener mSubItemFocusChangeListener = new OnFocusChangeListener() { 232 233 @Override 234 public void onFocusChange(View v, boolean hasFocus) { 235 if (hasFocus) { 236 v.setBackgroundColor(Color.YELLOW); 237 } else { 238 v.setBackgroundColor(Color.LTGRAY); 239 } 240 } 241 }; 242 243 void resetBoundCount() { 244 mBoundCount = 0; 245 } 246 247 int getBoundCount() { 248 return mBoundCount; 249 } 250 251 void swap(int index1, int index2) { 252 if (index1 == index2) { 253 return; 254 } else if (index1 > index2) { 255 int index = index1; 256 index1 = index2; 257 index2 = index; 258 } 259 int value = mItemLengths[index1]; 260 mItemLengths[index1] = mItemLengths[index2]; 261 mItemLengths[index2] = value; 262 mGridView.getAdapter().notifyItemMoved(index1, index2); 263 mGridView.getAdapter().notifyItemMoved(index2 - 1, index1); 264 } 265 266 void moveItem(int index1, int index2, boolean notify) { 267 if (index1 == index2) { 268 return; 269 } 270 int[] items = removeItems(index1, 1, false); 271 addItems(index2, items, false); 272 if (notify) { 273 mGridView.getAdapter().notifyItemMoved(index1, index2); 274 } 275 } 276 277 void changeArraySize(int length) { 278 mNumItems = length; 279 mGridView.getAdapter().notifyDataSetChanged(); 280 } 281 282 int[] removeItems(int index, int length) { 283 return removeItems(index, length, true); 284 } 285 286 int[] removeItems(int index, int length, boolean notify) { 287 int[] removed = new int[length]; 288 System.arraycopy(mItemLengths, index, removed, 0, length); 289 System.arraycopy(mItemLengths, index + length, mItemLengths, index, 290 mNumItems - index - length); 291 mNumItems -= length; 292 if (mGridView.getAdapter() != null && notify) { 293 mGridView.getAdapter().notifyItemRangeRemoved(index, length); 294 } 295 return removed; 296 } 297 298 void attachToNewAdapter(int[] items) { 299 mItemLengths = items; 300 mNumItems = items.length; 301 mGridView.setAdapter(new MyAdapter()); 302 } 303 304 305 void changeItem(int position, int itemValue) { 306 mItemLengths[position] = itemValue; 307 if (mGridView.getAdapter() != null) { 308 mGridView.getAdapter().notifyItemChanged(position); 309 } 310 } 311 312 void addItems(int index, int[] items) { 313 addItems(index, items, true); 314 } 315 316 void addItems(int index, int[] items, boolean notify) { 317 int length = items.length; 318 if (mItemLengths.length < mNumItems + length) { 319 int[] array = new int[mNumItems + length]; 320 System.arraycopy(mItemLengths, 0, array, 0, mNumItems); 321 mItemLengths = array; 322 } 323 System.arraycopy(mItemLengths, index, mItemLengths, index + length, mNumItems - index); 324 System.arraycopy(items, 0, mItemLengths, index, length); 325 mNumItems += length; 326 if (notify && mGridView.getAdapter() != null) { 327 mGridView.getAdapter().notifyItemRangeInserted(index, length); 328 } 329 } 330 331 class MyAdapter extends RecyclerView.Adapter implements FacetProviderAdapter { 332 333 @Override 334 public int getItemViewType(int position) { 335 if (mViewTypeProvider != null) { 336 return mViewTypeProvider.getViewType(position); 337 } 338 return 0; 339 } 340 341 @Override 342 public FacetProvider getFacetProvider(int viewType) { 343 final Object alignmentFacet = mAlignmentViewTypeProvider != null 344 ? mAlignmentViewTypeProvider.getItemAlignmentFacet(viewType) : null; 345 if (alignmentFacet != null) { 346 return new FacetProvider() { 347 @Override 348 public Object getFacet(Class facetClass) { 349 if (facetClass.equals(ItemAlignmentFacet.class)) { 350 return alignmentFacet; 351 } 352 return null; 353 } 354 }; 355 } 356 return null; 357 } 358 359 @Override 360 public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 361 if (DEBUG) Log.v(TAG, "createViewHolder " + viewType); 362 View itemView; 363 if (mChildLayout != -1) { 364 final View view = getLayoutInflater().inflate(mChildLayout, parent, false); 365 ArrayList<View> focusables = new ArrayList<View>(); 366 view.addFocusables(focusables, View.FOCUS_UP); 367 for (int i = 0; i < focusables.size(); i++) { 368 View f = focusables.get(i); 369 f.setBackgroundColor(Color.LTGRAY); 370 f.setOnFocusChangeListener(new OnFocusChangeListener() { 371 @Override 372 public void onFocusChange(View v, boolean hasFocus) { 373 if (hasFocus) { 374 v.setBackgroundColor(Color.YELLOW); 375 } else { 376 v.setBackgroundColor(Color.LTGRAY); 377 } 378 if (mRequestLayoutOnFocus) { 379 if (v == view) { 380 RecyclerView.ViewHolder vh = mGridView.getChildViewHolder(v); 381 int position = vh.getAdapterPosition(); 382 updateSize(v, position); 383 } 384 view.requestLayout(); 385 } 386 } 387 }); 388 } 389 itemView = view; 390 } else { 391 TextView textView = new TextView(parent.getContext()) { 392 @Override 393 protected void onLayout(boolean change, int left, int top, int right, 394 int bottom) { 395 super.onLayout(change, left, top, right, bottom); 396 if (mRequestFocusOnLayout) { 397 if (hasFocus()) { 398 clearFocus(); 399 requestFocus(); 400 } 401 } 402 } 403 404 @Override 405 public void setImportantForAccessibility(int mode) { 406 super.setImportantForAccessibility(mode); 407 if (mImportantForAccessibilityListener != null) { 408 mImportantForAccessibilityListener.onImportantForAccessibilityChanged( 409 this, mode); 410 } 411 } 412 }; 413 textView.setTextColor(Color.BLACK); 414 textView.setOnFocusChangeListener(mItemFocusChangeListener); 415 itemView = textView; 416 } 417 if (mLayoutMargins != null) { 418 ViewGroup.MarginLayoutParams lp = (ViewGroup.MarginLayoutParams) 419 itemView.getLayoutParams(); 420 if (lp == null) { 421 lp = new ViewGroup.MarginLayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 422 ViewGroup.LayoutParams.WRAP_CONTENT); 423 } 424 lp.leftMargin = mLayoutMargins[0]; 425 lp.topMargin = mLayoutMargins[1]; 426 lp.rightMargin = mLayoutMargins[2]; 427 lp.bottomMargin = mLayoutMargins[3]; 428 itemView.setLayoutParams(lp); 429 } 430 if (mNinePatchShadow != 0) { 431 ViewGroup viewGroup = (ViewGroup) itemView; 432 View shadow = new View(viewGroup.getContext()); 433 shadow.setBackgroundResource(mNinePatchShadow); 434 viewGroup.addView(shadow); 435 viewGroup.setLayoutMode(ViewGroup.LAYOUT_MODE_OPTICAL_BOUNDS); 436 } 437 return new ViewHolder(itemView); 438 } 439 440 @Override 441 public void onBindViewHolder(RecyclerView.ViewHolder baseHolder, int position) { 442 if (DEBUG) Log.v(TAG, "bindViewHolder " + position + " " + baseHolder); 443 mBoundCount++; 444 ViewHolder holder = (ViewHolder) baseHolder; 445 if (mAlignmentProvider != null) { 446 holder.mItemAlignment = mAlignmentProvider.getItemAlignmentFacet(position); 447 } else { 448 holder.mItemAlignment = null; 449 } 450 if (mChildLayout == -1) { 451 ((TextView) holder.itemView).setText("Item "+mItemLengths[position] 452 + " type=" + getItemViewType(position)); 453 boolean focusable = true; 454 if (mItemFocusables != null) { 455 focusable = mItemFocusables[position]; 456 } 457 ((TextView) holder.itemView).setFocusable(focusable); 458 ((TextView) holder.itemView).setFocusableInTouchMode(focusable); 459 holder.itemView.setBackgroundColor(Color.LTGRAY); 460 } else { 461 if (holder.itemView instanceof TextView) { 462 ((TextView) holder.itemView).setText("Item "+mItemLengths[position] 463 + " type=" + getItemViewType(position)); 464 } 465 } 466 updateSize(holder.itemView, position); 467 if (mAdapterListener != null) { 468 mAdapterListener.onBind(baseHolder, position); 469 } 470 } 471 472 @Override 473 public int getItemCount() { 474 return mNumItems; 475 } 476 477 @Override 478 public long getItemId(int position) { 479 if (!mHasStableIds) return -1; 480 return position; 481 } 482 } 483 484 void updateSize(View view, int position) { 485 if (!mUpdateSize) { 486 return; 487 } 488 ViewGroup.LayoutParams p = view.getLayoutParams(); 489 if (p == null) { 490 p = new ViewGroup.LayoutParams(0, 0); 491 } 492 if (mOrientation == BaseGridView.HORIZONTAL) { 493 p.width = mItemLengths[position] + (mRequestLayoutOnFocus && view.hasFocus() ? 1 : 0); 494 p.height = mSecondarySizeZero ? 0 : 80; 495 } else { 496 p.width = mSecondarySizeZero ? 0 : 240; 497 p.height = mItemLengths[position] + (mRequestLayoutOnFocus && view.hasFocus() ? 1 : 0); 498 } 499 view.setLayoutParams(p); 500 } 501 502 static class ViewHolder extends RecyclerView.ViewHolder implements FacetProvider { 503 504 ItemAlignmentFacet mItemAlignment; 505 public ViewHolder(View v) { 506 super(v); 507 } 508 509 @Override 510 public Object getFacet(Class facetClass) { 511 if (facetClass.equals(ItemAlignmentFacet.class)) { 512 return mItemAlignment; 513 } 514 return null; 515 } 516 } 517 } 518
