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 androidx.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.util.Log; 24 import android.view.View; 25 import android.view.View.OnFocusChangeListener; 26 import android.view.ViewGroup; 27 import android.widget.TextView; 28 29 import androidx.leanback.test.R; 30 import androidx.recyclerview.widget.RecyclerView; 31 32 import java.util.ArrayList; 33 34 public class GridActivity extends Activity { 35 36 private static final String TAG = "GridActivity"; 37 38 interface ImportantForAccessibilityListener { 39 void onImportantForAccessibilityChanged(View view, int newValue); 40 } 41 42 interface AdapterListener { 43 void onBind(RecyclerView.ViewHolder vh, int position); 44 } 45 46 public static final String EXTRA_LAYOUT_RESOURCE_ID = "layoutResourceId"; 47 public static final String EXTRA_NUM_ITEMS = "numItems"; 48 public static final String EXTRA_ITEMS = "items"; 49 public static final String EXTRA_ITEMS_FOCUSABLE = "itemsFocusable"; 50 public static final String EXTRA_STAGGERED = "staggered"; 51 public static final String EXTRA_REQUEST_LAYOUT_ONFOCUS = "requestLayoutOnFocus"; 52 public static final String EXTRA_REQUEST_FOCUS_ONLAYOUT = "requstFocusOnLayout"; 53 public static final String EXTRA_CHILD_LAYOUT_ID = "childLayoutId"; 54 public static final String EXTRA_SECONDARY_SIZE_ZERO = "secondarySizeZero"; 55 public static final String EXTRA_UPDATE_SIZE = "updateSize"; 56 public static final String EXTRA_UPDATE_SIZE_SECONDARY = "updateSizeSecondary"; 57 public static final String EXTRA_LAYOUT_MARGINS = "layoutMargins"; 58 public static final String EXTRA_NINEPATCH_SHADOW = "NINEPATCH_SHADOW"; 59 public static final String EXTRA_HAS_STABLE_IDS = "hasStableIds"; 60 61 /** 62 * Class that implements GridWidgetTest.ViewTypeProvider for creating different 63 * view types for each position. 64 */ 65 public static final String EXTRA_VIEWTYPEPROVIDER_CLASS = "viewtype_class"; 66 /** 67 * Class that implements GridWidgetTest.ItemAlignmentFacetProvider for creating different 68 * ItemAlignmentFacet for each ViewHolder. 69 */ 70 public static final String EXTRA_ITEMALIGNMENTPROVIDER_CLASS = "itemalignment_class"; 71 /** 72 * Class that implements GridWidgetTest.ItemAlignmentFacetProvider for creating different 73 * ItemAlignmentFacet for a given viewType. 74 */ 75 public static final String EXTRA_ITEMALIGNMENTPROVIDER_VIEWTYPE_CLASS = 76 "itemalignment_viewtype_class"; 77 public static final String SELECT_ACTION = "android.test.leanback.widget.SELECT"; 78 79 static final int DEFAULT_NUM_ITEMS = 100; 80 static final boolean DEFAULT_STAGGERED = true; 81 static final boolean DEFAULT_REQUEST_LAYOUT_ONFOCUS = false; 82 static final boolean DEFAULT_REQUEST_FOCUS_ONLAYOUT = false; 83 84 private static final boolean DEBUG = false; 85 86 int mLayoutId; 87 int mOrientation; 88 int mNumItems; 89 int mChildLayout; 90 boolean mStaggered; 91 boolean mRequestLayoutOnFocus; 92 boolean mRequestFocusOnLayout; 93 boolean mSecondarySizeZero; 94 GridWidgetTest.ViewTypeProvider mViewTypeProvider; 95 GridWidgetTest.ItemAlignmentFacetProvider mAlignmentProvider; 96 GridWidgetTest.ItemAlignmentFacetProvider mAlignmentViewTypeProvider; 97 AdapterListener mAdapterListener; 98 boolean mUpdateSize = true; 99 boolean mUpdateSizeSecondary = false; 100 boolean mHasStableIds; 101 102 int[] mGridViewLayoutSize; 103 BaseGridView mGridView; 104 int[] mItemLengths; 105 boolean[] mItemFocusables; 106 int[] mLayoutMargins; 107 int mNinePatchShadow; 108 109 private int mBoundCount; 110 ImportantForAccessibilityListener mImportantForAccessibilityListener; 111 112 private View createView() { 113 114 View view = getLayoutInflater().inflate(mLayoutId, null, false); 115 mGridView = (BaseGridView) view.findViewById(R.id.gridview); 116 mOrientation = mGridView instanceof HorizontalGridView ? BaseGridView.HORIZONTAL : 117 BaseGridView.VERTICAL; 118 mGridView.setWindowAlignment(BaseGridView.WINDOW_ALIGN_BOTH_EDGE); 119 mGridView.setWindowAlignmentOffsetPercent(35); 120 mGridView.setOnChildSelectedListener(new OnChildSelectedListener() { 121 @Override 122 public void onChildSelected(ViewGroup parent, View view, int position, long id) { 123 if (DEBUG) Log.d(TAG, "onChildSelected position=" + position + " id="+id); 124 } 125 }); 126 if (mNinePatchShadow != 0) { 127 mGridView.setLayoutMode(ViewGroup.LAYOUT_MODE_OPTICAL_BOUNDS); 128 } 129 return view; 130 } 131 132 @Override 133 protected void onCreate(Bundle savedInstanceState) { 134 Intent intent = getIntent(); 135 136 mLayoutId = intent.getIntExtra(EXTRA_LAYOUT_RESOURCE_ID, R.layout.horizontal_grid); 137 mChildLayout = intent.getIntExtra(EXTRA_CHILD_LAYOUT_ID, -1); 138 mStaggered = intent.getBooleanExtra(EXTRA_STAGGERED, DEFAULT_STAGGERED); 139 mRequestLayoutOnFocus = intent.getBooleanExtra(EXTRA_REQUEST_LAYOUT_ONFOCUS, 140 DEFAULT_REQUEST_LAYOUT_ONFOCUS); 141 mRequestFocusOnLayout = intent.getBooleanExtra(EXTRA_REQUEST_FOCUS_ONLAYOUT, 142 DEFAULT_REQUEST_FOCUS_ONLAYOUT); 143 mUpdateSize = intent.getBooleanExtra(EXTRA_UPDATE_SIZE, true); 144 mUpdateSizeSecondary = intent.getBooleanExtra(EXTRA_UPDATE_SIZE_SECONDARY, false); 145 mSecondarySizeZero = intent.getBooleanExtra(EXTRA_SECONDARY_SIZE_ZERO, false); 146 mItemLengths = intent.getIntArrayExtra(EXTRA_ITEMS); 147 mHasStableIds = intent.getBooleanExtra(EXTRA_HAS_STABLE_IDS, false); 148 mItemFocusables = intent.getBooleanArrayExtra(EXTRA_ITEMS_FOCUSABLE); 149 mLayoutMargins = intent.getIntArrayExtra(EXTRA_LAYOUT_MARGINS); 150 String alignmentClass = intent.getStringExtra(EXTRA_ITEMALIGNMENTPROVIDER_CLASS); 151 String alignmentViewTypeClass = 152 intent.getStringExtra(EXTRA_ITEMALIGNMENTPROVIDER_VIEWTYPE_CLASS); 153 String viewTypeClass = intent.getStringExtra(EXTRA_VIEWTYPEPROVIDER_CLASS); 154 mNinePatchShadow = intent.getIntExtra(EXTRA_NINEPATCH_SHADOW, 0); 155 try { 156 if (alignmentClass != null) { 157 mAlignmentProvider = (GridWidgetTest.ItemAlignmentFacetProvider) 158 Class.forName(alignmentClass).newInstance(); 159 } 160 if (alignmentViewTypeClass != null) { 161 mAlignmentViewTypeProvider = (GridWidgetTest.ItemAlignmentFacetProvider) 162 Class.forName(alignmentViewTypeClass).newInstance(); 163 } 164 if (viewTypeClass != null) { 165 mViewTypeProvider = (GridWidgetTest.ViewTypeProvider) 166 Class.forName(viewTypeClass).newInstance(); 167 } 168 } catch (ClassNotFoundException ex) { 169 throw new RuntimeException(ex); 170 } catch (InstantiationException ex) { 171 throw new RuntimeException(ex); 172 } catch (IllegalAccessException ex) { 173 throw new RuntimeException(ex); 174 } 175 176 super.onCreate(savedInstanceState); 177 178 if (DEBUG) Log.v(TAG, "onCreate " + this); 179 180 RecyclerView.Adapter adapter = new MyAdapter(); 181 adapter.setHasStableIds(mHasStableIds); 182 183 View view = createView(); 184 if (mItemLengths == null) { 185 mNumItems = intent.getIntExtra(EXTRA_NUM_ITEMS, DEFAULT_NUM_ITEMS); 186 mItemLengths = new int[mNumItems]; 187 for (int i = 0; i < mItemLengths.length; i++) { 188 if (mOrientation == BaseGridView.HORIZONTAL) { 189 mItemLengths[i] = mStaggered ? (int)(Math.random() * 180) + 180 : 240; 190 } else { 191 mItemLengths[i] = mStaggered ? (int)(Math.random() * 120) + 120 : 160; 192 } 193 } 194 } else { 195 mNumItems = mItemLengths.length; 196 } 197 198 mGridView.setAdapter(adapter); 199 setContentView(view); 200 } 201 202 void rebindToNewAdapter() { 203 mGridView.setAdapter(new MyAdapter()); 204 } 205 206 @Override 207 protected void onNewIntent(Intent intent) { 208 if (DEBUG) Log.v(TAG, "onNewIntent " + intent+ " "+this); 209 if (intent.getAction().equals(SELECT_ACTION)) { 210 int position = intent.getIntExtra("SELECT_POSITION", -1); 211 if (position >= 0) { 212 mGridView.setSelectedPosition(position); 213 } 214 } 215 super.onNewIntent(intent); 216 } 217 218 private OnFocusChangeListener mItemFocusChangeListener = new OnFocusChangeListener() { 219 220 @Override 221 public void onFocusChange(View v, boolean hasFocus) { 222 if (hasFocus) { 223 v.setBackgroundColor(Color.YELLOW); 224 } else { 225 v.setBackgroundColor(Color.LTGRAY); 226 } 227 if (mRequestLayoutOnFocus) { 228 RecyclerView.ViewHolder vh = mGridView.getChildViewHolder(v); 229 int position = vh.getAdapterPosition(); 230 updateSize(v, position); 231 } 232 } 233 }; 234 235 private OnFocusChangeListener mSubItemFocusChangeListener = new OnFocusChangeListener() { 236 237 @Override 238 public void onFocusChange(View v, boolean hasFocus) { 239 if (hasFocus) { 240 v.setBackgroundColor(Color.YELLOW); 241 } else { 242 v.setBackgroundColor(Color.LTGRAY); 243 } 244 } 245 }; 246 247 void resetBoundCount() { 248 mBoundCount = 0; 249 } 250 251 int getBoundCount() { 252 return mBoundCount; 253 } 254 255 void swap(int index1, int index2) { 256 if (index1 == index2) { 257 return; 258 } else if (index1 > index2) { 259 int index = index1; 260 index1 = index2; 261 index2 = index; 262 } 263 int value = mItemLengths[index1]; 264 mItemLengths[index1] = mItemLengths[index2]; 265 mItemLengths[index2] = value; 266 mGridView.getAdapter().notifyItemMoved(index1, index2); 267 mGridView.getAdapter().notifyItemMoved(index2 - 1, index1); 268 } 269 270 void moveItem(int index1, int index2, boolean notify) { 271 if (index1 == index2) { 272 return; 273 } 274 int[] items = removeItems(index1, 1, false); 275 addItems(index2, items, false); 276 if (notify) { 277 mGridView.getAdapter().notifyItemMoved(index1, index2); 278 } 279 } 280 281 void changeArraySize(int length) { 282 mNumItems = length; 283 mGridView.getAdapter().notifyDataSetChanged(); 284 } 285 286 int[] removeItems(int index, int length) { 287 return removeItems(index, length, true); 288 } 289 290 int[] removeItems(int index, int length, boolean notify) { 291 int[] removed = new int[length]; 292 System.arraycopy(mItemLengths, index, removed, 0, length); 293 System.arraycopy(mItemLengths, index + length, mItemLengths, index, 294 mNumItems - index - length); 295 mNumItems -= length; 296 if (mGridView.getAdapter() != null && notify) { 297 mGridView.getAdapter().notifyItemRangeRemoved(index, length); 298 } 299 return removed; 300 } 301 302 void attachToNewAdapter(int[] items) { 303 mItemLengths = items; 304 mNumItems = items.length; 305 mGridView.setAdapter(new MyAdapter()); 306 } 307 308 309 void changeItem(int position, int itemValue) { 310 mItemLengths[position] = itemValue; 311 if (mGridView.getAdapter() != null) { 312 mGridView.getAdapter().notifyItemChanged(position); 313 } 314 } 315 316 void addItems(int index, int[] items) { 317 addItems(index, items, true); 318 } 319 320 void addItems(int index, int[] items, boolean notify) { 321 int length = items.length; 322 if (mItemLengths.length < mNumItems + length) { 323 int[] array = new int[mNumItems + length]; 324 System.arraycopy(mItemLengths, 0, array, 0, mNumItems); 325 mItemLengths = array; 326 } 327 System.arraycopy(mItemLengths, index, mItemLengths, index + length, mNumItems - index); 328 System.arraycopy(items, 0, mItemLengths, index, length); 329 mNumItems += length; 330 if (notify && mGridView.getAdapter() != null) { 331 mGridView.getAdapter().notifyItemRangeInserted(index, length); 332 } 333 } 334 335 class MyAdapter extends RecyclerView.Adapter implements FacetProviderAdapter { 336 337 @Override 338 public int getItemViewType(int position) { 339 if (mViewTypeProvider != null) { 340 return mViewTypeProvider.getViewType(position); 341 } 342 return 0; 343 } 344 345 @Override 346 public FacetProvider getFacetProvider(int viewType) { 347 final Object alignmentFacet = mAlignmentViewTypeProvider != null 348 ? mAlignmentViewTypeProvider.getItemAlignmentFacet(viewType) : null; 349 if (alignmentFacet != null) { 350 return new FacetProvider() { 351 @Override 352 public Object getFacet(Class facetClass) { 353 if (facetClass.equals(ItemAlignmentFacet.class)) { 354 return alignmentFacet; 355 } 356 return null; 357 } 358 }; 359 } 360 return null; 361 } 362 363 @Override 364 public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 365 if (DEBUG) Log.v(TAG, "createViewHolder " + viewType); 366 View itemView; 367 if (mChildLayout != -1) { 368 final View view = getLayoutInflater().inflate(mChildLayout, parent, false); 369 ArrayList<View> focusables = new ArrayList<View>(); 370 view.addFocusables(focusables, View.FOCUS_UP); 371 for (int i = 0; i < focusables.size(); i++) { 372 View f = focusables.get(i); 373 f.setBackgroundColor(Color.LTGRAY); 374 f.setOnFocusChangeListener(new OnFocusChangeListener() { 375 @Override 376 public void onFocusChange(View v, boolean hasFocus) { 377 if (hasFocus) { 378 v.setBackgroundColor(Color.YELLOW); 379 } else { 380 v.setBackgroundColor(Color.LTGRAY); 381 } 382 if (mRequestLayoutOnFocus) { 383 if (v == view) { 384 RecyclerView.ViewHolder vh = mGridView.getChildViewHolder(v); 385 int position = vh.getAdapterPosition(); 386 updateSize(v, position); 387 } 388 view.requestLayout(); 389 } 390 } 391 }); 392 } 393 itemView = view; 394 } else { 395 TextView textView = new TextView(parent.getContext()) { 396 @Override 397 protected void onLayout(boolean change, int left, int top, int right, 398 int bottom) { 399 super.onLayout(change, left, top, right, bottom); 400 if (mRequestFocusOnLayout) { 401 if (hasFocus()) { 402 clearFocus(); 403 requestFocus(); 404 } 405 } 406 } 407 408 @Override 409 public void setImportantForAccessibility(int mode) { 410 super.setImportantForAccessibility(mode); 411 if (mImportantForAccessibilityListener != null) { 412 mImportantForAccessibilityListener.onImportantForAccessibilityChanged( 413 this, mode); 414 } 415 } 416 }; 417 textView.setTextColor(Color.BLACK); 418 textView.setOnFocusChangeListener(mItemFocusChangeListener); 419 itemView = textView; 420 } 421 if (mLayoutMargins != null) { 422 ViewGroup.MarginLayoutParams lp = (ViewGroup.MarginLayoutParams) 423 itemView.getLayoutParams(); 424 if (lp == null) { 425 lp = new ViewGroup.MarginLayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 426 ViewGroup.LayoutParams.WRAP_CONTENT); 427 } 428 lp.leftMargin = mLayoutMargins[0]; 429 lp.topMargin = mLayoutMargins[1]; 430 lp.rightMargin = mLayoutMargins[2]; 431 lp.bottomMargin = mLayoutMargins[3]; 432 itemView.setLayoutParams(lp); 433 } 434 if (mNinePatchShadow != 0) { 435 ViewGroup viewGroup = (ViewGroup) itemView; 436 View shadow = new View(viewGroup.getContext()); 437 shadow.setBackgroundResource(mNinePatchShadow); 438 viewGroup.addView(shadow); 439 viewGroup.setLayoutMode(ViewGroup.LAYOUT_MODE_OPTICAL_BOUNDS); 440 } 441 return new ViewHolder(itemView); 442 } 443 444 @Override 445 public void onBindViewHolder(RecyclerView.ViewHolder baseHolder, int position) { 446 if (DEBUG) Log.v(TAG, "bindViewHolder " + position + " " + baseHolder); 447 mBoundCount++; 448 ViewHolder holder = (ViewHolder) baseHolder; 449 if (mAlignmentProvider != null) { 450 holder.mItemAlignment = mAlignmentProvider.getItemAlignmentFacet(position); 451 } else { 452 holder.mItemAlignment = null; 453 } 454 if (mChildLayout == -1) { 455 ((TextView) holder.itemView).setText("Item "+mItemLengths[position] 456 + " type=" + getItemViewType(position)); 457 boolean focusable = true; 458 if (mItemFocusables != null) { 459 focusable = mItemFocusables[position]; 460 } 461 ((TextView) holder.itemView).setFocusable(focusable); 462 ((TextView) holder.itemView).setFocusableInTouchMode(focusable); 463 holder.itemView.setBackgroundColor(Color.LTGRAY); 464 } else { 465 if (holder.itemView instanceof TextView) { 466 ((TextView) holder.itemView).setText("Item "+mItemLengths[position] 467 + " type=" + getItemViewType(position)); 468 } 469 } 470 updateSize(holder.itemView, position); 471 if (mAdapterListener != null) { 472 mAdapterListener.onBind(baseHolder, position); 473 } 474 } 475 476 @Override 477 public int getItemCount() { 478 return mNumItems; 479 } 480 481 @Override 482 public long getItemId(int position) { 483 if (!mHasStableIds) return -1; 484 return position; 485 } 486 } 487 488 void updateSize(View view, int position) { 489 if (!mUpdateSize && !mUpdateSizeSecondary) { 490 return; 491 } 492 ViewGroup.LayoutParams p = view.getLayoutParams(); 493 if (p == null) { 494 p = new ViewGroup.LayoutParams(0, 0); 495 } 496 if (mOrientation == BaseGridView.HORIZONTAL) { 497 p.width = mItemLengths[position] 498 + (mUpdateSize && mRequestLayoutOnFocus && view.hasFocus() ? 1 : 0); 499 p.height = mSecondarySizeZero ? 0 500 : (mUpdateSizeSecondary && mRequestLayoutOnFocus && view.hasFocus() ? 96 : 80); 501 } else { 502 p.width = mSecondarySizeZero ? 0 503 : (mUpdateSizeSecondary && mRequestLayoutOnFocus && view.hasFocus() 504 ? 260 : 240); 505 p.height = mItemLengths[position] + (mRequestLayoutOnFocus && view.hasFocus() ? 1 : 0); 506 } 507 view.setLayoutParams(p); 508 } 509 510 static class ViewHolder extends RecyclerView.ViewHolder implements FacetProvider { 511 512 ItemAlignmentFacet mItemAlignment; 513 public ViewHolder(View v) { 514 super(v); 515 } 516 517 @Override 518 public Object getFacet(Class facetClass) { 519 if (facetClass.equals(ItemAlignmentFacet.class)) { 520 return mItemAlignment; 521 } 522 return null; 523 } 524 } 525 } 526
