RecentsPanelView.java revision 211cb86ab23f06d833919d4c3fef725d7fbb5858
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 17package com.android.systemui.recent; 18 19import android.animation.Animator; 20import android.animation.LayoutTransition; 21import android.animation.TimeInterpolator; 22import android.app.ActivityManager; 23import android.app.ActivityManagerNative; 24import android.app.ActivityOptions; 25import android.app.TaskStackBuilder; 26import android.content.Context; 27import android.content.Intent; 28import android.content.res.Configuration; 29import android.content.res.Resources; 30import android.content.res.TypedArray; 31import android.graphics.Bitmap; 32import android.graphics.Matrix; 33import android.graphics.Shader.TileMode; 34import android.graphics.drawable.BitmapDrawable; 35import android.graphics.drawable.Drawable; 36import android.net.Uri; 37import android.os.Bundle; 38import android.os.RemoteException; 39import android.os.UserHandle; 40import android.provider.Settings; 41import android.util.AttributeSet; 42import android.util.Log; 43import android.view.LayoutInflater; 44import android.view.MenuItem; 45import android.view.MotionEvent; 46import android.view.View; 47import android.view.ViewGroup; 48import android.view.ViewPropertyAnimator; 49import android.view.ViewRootImpl; 50import android.view.accessibility.AccessibilityEvent; 51import android.view.animation.AnimationUtils; 52import android.view.animation.DecelerateInterpolator; 53import android.widget.AdapterView; 54import android.widget.AdapterView.OnItemClickListener; 55import android.widget.BaseAdapter; 56import android.widget.FrameLayout; 57import android.widget.ImageView; 58import android.widget.ImageView.ScaleType; 59import android.widget.PopupMenu; 60import android.widget.TextView; 61 62import com.android.systemui.R; 63import com.android.systemui.statusbar.BaseStatusBar; 64import com.android.systemui.statusbar.StatusBarPanel; 65import com.android.systemui.statusbar.phone.PhoneStatusBar; 66 67import java.util.ArrayList; 68 69public class RecentsPanelView extends FrameLayout implements OnItemClickListener, RecentsCallback, 70 StatusBarPanel, Animator.AnimatorListener { 71 static final String TAG = "RecentsPanelView"; 72 static final boolean DEBUG = PhoneStatusBar.DEBUG || false; 73 private PopupMenu mPopup; 74 private View mRecentsScrim; 75 private View mRecentsNoApps; 76 private ViewGroup mRecentsContainer; 77 78 private boolean mShowing; 79 private boolean mWaitingToShow; 80 private ViewHolder mItemToAnimateInWhenWindowAnimationIsFinished; 81 private boolean mAnimateIconOfFirstTask; 82 private boolean mWaitingForWindowAnimation; 83 private long mWindowAnimationStartTime; 84 private boolean mCallUiHiddenBeforeNextReload; 85 86 private RecentTasksLoader mRecentTasksLoader; 87 private ArrayList<TaskDescription> mRecentTaskDescriptions; 88 private TaskDescriptionAdapter mListAdapter; 89 private int mThumbnailWidth; 90 private boolean mFitThumbnailToXY; 91 private int mRecentItemLayoutId; 92 private boolean mHighEndGfx; 93 94 public static interface RecentsScrollView { 95 public int numItemsInOneScreenful(); 96 public void setAdapter(TaskDescriptionAdapter adapter); 97 public void setCallback(RecentsCallback callback); 98 public void setMinSwipeAlpha(float minAlpha); 99 public View findViewForTask(int persistentTaskId); 100 } 101 102 private final class OnLongClickDelegate implements View.OnLongClickListener { 103 View mOtherView; 104 OnLongClickDelegate(View other) { 105 mOtherView = other; 106 } 107 public boolean onLongClick(View v) { 108 return mOtherView.performLongClick(); 109 } 110 } 111 112 /* package */ final static class ViewHolder { 113 View thumbnailView; 114 ImageView thumbnailViewImage; 115 Bitmap thumbnailViewImageBitmap; 116 ImageView iconView; 117 TextView labelView; 118 TextView descriptionView; 119 View calloutLine; 120 TaskDescription taskDescription; 121 boolean loadedThumbnailAndIcon; 122 } 123 124 /* package */ final class TaskDescriptionAdapter extends BaseAdapter { 125 private LayoutInflater mInflater; 126 127 public TaskDescriptionAdapter(Context context) { 128 mInflater = LayoutInflater.from(context); 129 } 130 131 public int getCount() { 132 return mRecentTaskDescriptions != null ? mRecentTaskDescriptions.size() : 0; 133 } 134 135 public Object getItem(int position) { 136 return position; // we only need the index 137 } 138 139 public long getItemId(int position) { 140 return position; // we just need something unique for this position 141 } 142 143 public View createView(ViewGroup parent) { 144 View convertView = mInflater.inflate(mRecentItemLayoutId, parent, false); 145 ViewHolder holder = new ViewHolder(); 146 holder.thumbnailView = convertView.findViewById(R.id.app_thumbnail); 147 holder.thumbnailViewImage = 148 (ImageView) convertView.findViewById(R.id.app_thumbnail_image); 149 // If we set the default thumbnail now, we avoid an onLayout when we update 150 // the thumbnail later (if they both have the same dimensions) 151 updateThumbnail(holder, mRecentTasksLoader.getDefaultThumbnail(), false, false); 152 holder.iconView = (ImageView) convertView.findViewById(R.id.app_icon); 153 holder.iconView.setImageBitmap(mRecentTasksLoader.getDefaultIcon()); 154 holder.labelView = (TextView) convertView.findViewById(R.id.app_label); 155 holder.calloutLine = convertView.findViewById(R.id.recents_callout_line); 156 holder.descriptionView = (TextView) convertView.findViewById(R.id.app_description); 157 158 convertView.setTag(holder); 159 return convertView; 160 } 161 162 public View getView(int position, View convertView, ViewGroup parent) { 163 if (convertView == null) { 164 convertView = createView(parent); 165 } 166 final ViewHolder holder = (ViewHolder) convertView.getTag(); 167 168 // index is reverse since most recent appears at the bottom... 169 final int index = mRecentTaskDescriptions.size() - position - 1; 170 171 final TaskDescription td = mRecentTaskDescriptions.get(index); 172 173 holder.labelView.setText(td.getLabel()); 174 holder.thumbnailView.setContentDescription(td.getLabel()); 175 holder.loadedThumbnailAndIcon = td.isLoaded(); 176 if (td.isLoaded()) { 177 updateThumbnail(holder, td.getThumbnail(), true, false); 178 updateIcon(holder, td.getIcon(), true, false); 179 } 180 if (index == 0) { 181 if (mAnimateIconOfFirstTask) { 182 ViewHolder oldHolder = mItemToAnimateInWhenWindowAnimationIsFinished; 183 if (oldHolder != null) { 184 oldHolder.iconView.setAlpha(1f); 185 oldHolder.iconView.setTranslationX(0f); 186 oldHolder.iconView.setTranslationY(0f); 187 oldHolder.labelView.setAlpha(1f); 188 oldHolder.labelView.setTranslationX(0f); 189 oldHolder.labelView.setTranslationY(0f); 190 if (oldHolder.calloutLine != null) { 191 oldHolder.calloutLine.setAlpha(1f); 192 oldHolder.calloutLine.setTranslationX(0f); 193 oldHolder.calloutLine.setTranslationY(0f); 194 } 195 } 196 mItemToAnimateInWhenWindowAnimationIsFinished = holder; 197 int translation = -getResources().getDimensionPixelSize( 198 R.dimen.status_bar_recents_app_icon_translate_distance); 199 final Configuration config = getResources().getConfiguration(); 200 if (config.orientation == Configuration.ORIENTATION_PORTRAIT) { 201 if (getLayoutDirection() == View.LAYOUT_DIRECTION_RTL) { 202 translation = -translation; 203 } 204 holder.iconView.setAlpha(0f); 205 holder.iconView.setTranslationX(translation); 206 holder.labelView.setAlpha(0f); 207 holder.labelView.setTranslationX(translation); 208 holder.calloutLine.setAlpha(0f); 209 holder.calloutLine.setTranslationX(translation); 210 } else { 211 holder.iconView.setAlpha(0f); 212 holder.iconView.setTranslationY(translation); 213 } 214 if (!mWaitingForWindowAnimation) { 215 animateInIconOfFirstTask(); 216 } 217 } 218 } 219 220 holder.thumbnailView.setTag(td); 221 holder.thumbnailView.setOnLongClickListener(new OnLongClickDelegate(convertView)); 222 holder.taskDescription = td; 223 return convertView; 224 } 225 226 public void recycleView(View v) { 227 ViewHolder holder = (ViewHolder) v.getTag(); 228 updateThumbnail(holder, mRecentTasksLoader.getDefaultThumbnail(), false, false); 229 holder.iconView.setImageBitmap(mRecentTasksLoader.getDefaultIcon()); 230 holder.iconView.setVisibility(INVISIBLE); 231 holder.iconView.animate().cancel(); 232 holder.labelView.setText(null); 233 holder.labelView.animate().cancel(); 234 holder.thumbnailView.setContentDescription(null); 235 holder.thumbnailView.setTag(null); 236 holder.thumbnailView.setOnLongClickListener(null); 237 holder.thumbnailView.setVisibility(INVISIBLE); 238 holder.iconView.setAlpha(1f); 239 holder.iconView.setTranslationX(0f); 240 holder.iconView.setTranslationY(0f); 241 holder.labelView.setAlpha(1f); 242 holder.labelView.setTranslationX(0f); 243 holder.labelView.setTranslationY(0f); 244 if (holder.calloutLine != null) { 245 holder.calloutLine.setAlpha(1f); 246 holder.calloutLine.setTranslationX(0f); 247 holder.calloutLine.setTranslationY(0f); 248 holder.calloutLine.animate().cancel(); 249 } 250 holder.taskDescription = null; 251 holder.loadedThumbnailAndIcon = false; 252 } 253 } 254 255 public RecentsPanelView(Context context, AttributeSet attrs) { 256 this(context, attrs, 0); 257 } 258 259 public RecentsPanelView(Context context, AttributeSet attrs, int defStyle) { 260 super(context, attrs, defStyle); 261 updateValuesFromResources(); 262 263 TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.RecentsPanelView, 264 defStyle, 0); 265 266 mRecentItemLayoutId = a.getResourceId(R.styleable.RecentsPanelView_recentItemLayout, 0); 267 mRecentTasksLoader = RecentTasksLoader.getInstance(context); 268 a.recycle(); 269 } 270 271 public int numItemsInOneScreenful() { 272 if (mRecentsContainer instanceof RecentsScrollView){ 273 RecentsScrollView scrollView 274 = (RecentsScrollView) mRecentsContainer; 275 return scrollView.numItemsInOneScreenful(); 276 } else { 277 throw new IllegalArgumentException("missing Recents[Horizontal]ScrollView"); 278 } 279 } 280 281 private boolean pointInside(int x, int y, View v) { 282 final int l = v.getLeft(); 283 final int r = v.getRight(); 284 final int t = v.getTop(); 285 final int b = v.getBottom(); 286 return x >= l && x < r && y >= t && y < b; 287 } 288 289 public boolean isInContentArea(int x, int y) { 290 return pointInside(x, y, mRecentsContainer); 291 } 292 293 public void show(boolean show) { 294 show(show, null, false, false); 295 } 296 297 public void show(boolean show, ArrayList<TaskDescription> recentTaskDescriptions, 298 boolean firstScreenful, boolean animateIconOfFirstTask) { 299 if (show && mCallUiHiddenBeforeNextReload) { 300 onUiHidden(); 301 recentTaskDescriptions = null; 302 mAnimateIconOfFirstTask = false; 303 mWaitingForWindowAnimation = false; 304 } else { 305 mAnimateIconOfFirstTask = animateIconOfFirstTask; 306 mWaitingForWindowAnimation = animateIconOfFirstTask; 307 } 308 if (show) { 309 mWaitingToShow = true; 310 refreshRecentTasksList(recentTaskDescriptions, firstScreenful); 311 showIfReady(); 312 } else { 313 showImpl(false); 314 } 315 } 316 317 private void showIfReady() { 318 // mWaitingToShow => there was a touch up on the recents button 319 // mRecentTaskDescriptions != null => we've created views for the first screenful of items 320 if (mWaitingToShow && mRecentTaskDescriptions != null) { 321 showImpl(true); 322 } 323 } 324 325 static void sendCloseSystemWindows(Context context, String reason) { 326 if (ActivityManagerNative.isSystemReady()) { 327 try { 328 ActivityManagerNative.getDefault().closeSystemDialogs(reason); 329 } catch (RemoteException e) { 330 } 331 } 332 } 333 334 private void showImpl(boolean show) { 335 sendCloseSystemWindows(mContext, BaseStatusBar.SYSTEM_DIALOG_REASON_RECENT_APPS); 336 337 mShowing = show; 338 339 if (show) { 340 // if there are no apps, bring up a "No recent apps" message 341 boolean noApps = mRecentTaskDescriptions != null 342 && (mRecentTaskDescriptions.size() == 0); 343 mRecentsNoApps.setAlpha(1f); 344 mRecentsNoApps.setVisibility(noApps ? View.VISIBLE : View.INVISIBLE); 345 346 onAnimationEnd(null); 347 setFocusable(true); 348 setFocusableInTouchMode(true); 349 requestFocus(); 350 } else { 351 mWaitingToShow = false; 352 // call onAnimationEnd() and clearRecentTasksList() in onUiHidden() 353 mCallUiHiddenBeforeNextReload = true; 354 if (mPopup != null) { 355 mPopup.dismiss(); 356 } 357 ((RecentsActivity) mContext).moveTaskToBack(true); 358 } 359 } 360 361 protected void onAttachedToWindow () { 362 super.onAttachedToWindow(); 363 final ViewRootImpl root = getViewRootImpl(); 364 if (root != null) { 365 root.setDrawDuringWindowsAnimating(true); 366 } 367 } 368 369 public void onUiHidden() { 370 mCallUiHiddenBeforeNextReload = false; 371 if (!mShowing && mRecentTaskDescriptions != null) { 372 onAnimationEnd(null); 373 clearRecentTasksList(); 374 } 375 } 376 377 public void dismiss() { 378 ((RecentsActivity) mContext).dismissAndGoHome(); 379 } 380 381 public void dismissAndGoBack() { 382 ((RecentsActivity) mContext).dismissAndGoBack(); 383 } 384 385 public void onAnimationCancel(Animator animation) { 386 } 387 388 public void onAnimationEnd(Animator animation) { 389 if (mShowing) { 390 final LayoutTransition transitioner = new LayoutTransition(); 391 ((ViewGroup)mRecentsContainer).setLayoutTransition(transitioner); 392 createCustomAnimations(transitioner); 393 } else { 394 ((ViewGroup)mRecentsContainer).setLayoutTransition(null); 395 } 396 } 397 398 public void onAnimationRepeat(Animator animation) { 399 } 400 401 public void onAnimationStart(Animator animation) { 402 } 403 404 @Override 405 public boolean dispatchHoverEvent(MotionEvent event) { 406 // Ignore hover events outside of this panel bounds since such events 407 // generate spurious accessibility events with the panel content when 408 // tapping outside of it, thus confusing the user. 409 final int x = (int) event.getX(); 410 final int y = (int) event.getY(); 411 if (x >= 0 && x < getWidth() && y >= 0 && y < getHeight()) { 412 return super.dispatchHoverEvent(event); 413 } 414 return true; 415 } 416 417 /** 418 * Whether the panel is showing, or, if it's animating, whether it will be 419 * when the animation is done. 420 */ 421 public boolean isShowing() { 422 return mShowing; 423 } 424 425 public void setRecentTasksLoader(RecentTasksLoader loader) { 426 mRecentTasksLoader = loader; 427 } 428 429 public void updateValuesFromResources() { 430 final Resources res = mContext.getResources(); 431 mThumbnailWidth = Math.round(res.getDimension(R.dimen.status_bar_recents_thumbnail_width)); 432 mFitThumbnailToXY = res.getBoolean(R.bool.config_recents_thumbnail_image_fits_to_xy); 433 } 434 435 @Override 436 protected void onFinishInflate() { 437 super.onFinishInflate(); 438 439 mRecentsContainer = (ViewGroup) findViewById(R.id.recents_container); 440 mListAdapter = new TaskDescriptionAdapter(mContext); 441 if (mRecentsContainer instanceof RecentsScrollView){ 442 RecentsScrollView scrollView 443 = (RecentsScrollView) mRecentsContainer; 444 scrollView.setAdapter(mListAdapter); 445 scrollView.setCallback(this); 446 } else { 447 throw new IllegalArgumentException("missing Recents[Horizontal]ScrollView"); 448 } 449 450 mRecentsScrim = findViewById(R.id.recents_bg_protect); 451 mRecentsNoApps = findViewById(R.id.recents_no_apps); 452 453 if (mRecentsScrim != null) { 454 mHighEndGfx = ActivityManager.isHighEndGfx(); 455 if (!mHighEndGfx) { 456 mRecentsScrim.setBackground(null); 457 } else if (mRecentsScrim.getBackground() instanceof BitmapDrawable) { 458 // In order to save space, we make the background texture repeat in the Y direction 459 ((BitmapDrawable) mRecentsScrim.getBackground()).setTileModeY(TileMode.REPEAT); 460 } 461 } 462 } 463 464 public void setMinSwipeAlpha(float minAlpha) { 465 if (mRecentsContainer instanceof RecentsScrollView){ 466 RecentsScrollView scrollView 467 = (RecentsScrollView) mRecentsContainer; 468 scrollView.setMinSwipeAlpha(minAlpha); 469 } 470 } 471 472 private void createCustomAnimations(LayoutTransition transitioner) { 473 transitioner.setDuration(200); 474 transitioner.setStartDelay(LayoutTransition.CHANGE_DISAPPEARING, 0); 475 transitioner.setAnimator(LayoutTransition.DISAPPEARING, null); 476 } 477 478 private void updateIcon(ViewHolder h, Drawable icon, boolean show, boolean anim) { 479 if (icon != null) { 480 h.iconView.setImageDrawable(icon); 481 if (show && h.iconView.getVisibility() != View.VISIBLE) { 482 if (anim) { 483 h.iconView.setAnimation( 484 AnimationUtils.loadAnimation(mContext, R.anim.recent_appear)); 485 } 486 h.iconView.setVisibility(View.VISIBLE); 487 } 488 } 489 } 490 491 private void updateThumbnail(ViewHolder h, Bitmap thumbnail, boolean show, boolean anim) { 492 if (thumbnail != null) { 493 // Should remove the default image in the frame 494 // that this now covers, to improve scrolling speed. 495 // That can't be done until the anim is complete though. 496 h.thumbnailViewImage.setImageBitmap(thumbnail); 497 498 // scale the image to fill the full width of the ImageView. do this only if 499 // we haven't set a bitmap before, or if the bitmap size has changed 500 if (h.thumbnailViewImageBitmap == null || 501 h.thumbnailViewImageBitmap.getWidth() != thumbnail.getWidth() || 502 h.thumbnailViewImageBitmap.getHeight() != thumbnail.getHeight()) { 503 if (mFitThumbnailToXY) { 504 h.thumbnailViewImage.setScaleType(ScaleType.FIT_XY); 505 } else { 506 Matrix scaleMatrix = new Matrix(); 507 float scale = mThumbnailWidth / (float) thumbnail.getWidth(); 508 scaleMatrix.setScale(scale, scale); 509 h.thumbnailViewImage.setScaleType(ScaleType.MATRIX); 510 h.thumbnailViewImage.setImageMatrix(scaleMatrix); 511 } 512 } 513 if (show && h.thumbnailView.getVisibility() != View.VISIBLE) { 514 if (anim) { 515 h.thumbnailView.setAnimation( 516 AnimationUtils.loadAnimation(mContext, R.anim.recent_appear)); 517 } 518 h.thumbnailView.setVisibility(View.VISIBLE); 519 } 520 h.thumbnailViewImageBitmap = thumbnail; 521 } 522 } 523 524 void onTaskThumbnailLoaded(TaskDescription td) { 525 synchronized (td) { 526 if (mRecentsContainer != null) { 527 ViewGroup container = mRecentsContainer; 528 if (container instanceof RecentsScrollView) { 529 container = (ViewGroup) container.findViewById( 530 R.id.recents_linear_layout); 531 } 532 // Look for a view showing this thumbnail, to update. 533 for (int i=0; i < container.getChildCount(); i++) { 534 View v = container.getChildAt(i); 535 if (v.getTag() instanceof ViewHolder) { 536 ViewHolder h = (ViewHolder)v.getTag(); 537 if (!h.loadedThumbnailAndIcon && h.taskDescription == td) { 538 // only fade in the thumbnail if recents is already visible-- we 539 // show it immediately otherwise 540 //boolean animateShow = mShowing && 541 // mRecentsContainer.getAlpha() > ViewConfiguration.ALPHA_THRESHOLD; 542 boolean animateShow = false; 543 updateIcon(h, td.getIcon(), true, animateShow); 544 updateThumbnail(h, td.getThumbnail(), true, animateShow); 545 h.loadedThumbnailAndIcon = true; 546 } 547 } 548 } 549 } 550 } 551 showIfReady(); 552 } 553 554 private void animateInIconOfFirstTask() { 555 if (mItemToAnimateInWhenWindowAnimationIsFinished != null && 556 !mRecentTasksLoader.isFirstScreenful()) { 557 int timeSinceWindowAnimation = 558 (int) (System.currentTimeMillis() - mWindowAnimationStartTime); 559 final int minStartDelay = 150; 560 final int startDelay = Math.max(0, Math.min( 561 minStartDelay - timeSinceWindowAnimation, minStartDelay)); 562 final int duration = 250; 563 final ViewHolder holder = mItemToAnimateInWhenWindowAnimationIsFinished; 564 final TimeInterpolator cubic = new DecelerateInterpolator(1.5f); 565 FirstFrameAnimatorHelper.initializeDrawListener(holder.iconView); 566 for (View v : 567 new View[] { holder.iconView, holder.labelView, holder.calloutLine }) { 568 if (v != null) { 569 ViewPropertyAnimator vpa = v.animate().translationX(0).translationY(0) 570 .alpha(1f).setStartDelay(startDelay) 571 .setDuration(duration).setInterpolator(cubic); 572 FirstFrameAnimatorHelper h = new FirstFrameAnimatorHelper(vpa, v); 573 } 574 } 575 mItemToAnimateInWhenWindowAnimationIsFinished = null; 576 mAnimateIconOfFirstTask = false; 577 } 578 } 579 580 public void onWindowAnimationStart() { 581 mWaitingForWindowAnimation = false; 582 mWindowAnimationStartTime = System.currentTimeMillis(); 583 animateInIconOfFirstTask(); 584 } 585 586 public void clearRecentTasksList() { 587 // Clear memory used by screenshots 588 if (mRecentTaskDescriptions != null) { 589 mRecentTasksLoader.cancelLoadingThumbnailsAndIcons(this); 590 onTaskLoadingCancelled(); 591 } 592 } 593 594 public void onTaskLoadingCancelled() { 595 // Gets called by RecentTasksLoader when it's cancelled 596 if (mRecentTaskDescriptions != null) { 597 mRecentTaskDescriptions = null; 598 mListAdapter.notifyDataSetInvalidated(); 599 } 600 } 601 602 public void refreshViews() { 603 mListAdapter.notifyDataSetInvalidated(); 604 updateUiElements(); 605 showIfReady(); 606 } 607 608 public void refreshRecentTasksList() { 609 refreshRecentTasksList(null, false); 610 } 611 612 private void refreshRecentTasksList( 613 ArrayList<TaskDescription> recentTasksList, boolean firstScreenful) { 614 if (mRecentTaskDescriptions == null && recentTasksList != null) { 615 onTasksLoaded(recentTasksList, firstScreenful); 616 } else { 617 mRecentTasksLoader.loadTasksInBackground(); 618 } 619 } 620 621 public void onTasksLoaded(ArrayList<TaskDescription> tasks, boolean firstScreenful) { 622 if (mRecentTaskDescriptions == null) { 623 mRecentTaskDescriptions = new ArrayList<TaskDescription>(tasks); 624 } else { 625 mRecentTaskDescriptions.addAll(tasks); 626 } 627 if (((RecentsActivity) mContext).isActivityShowing()) { 628 refreshViews(); 629 } 630 } 631 632 private void updateUiElements() { 633 final int items = mRecentTaskDescriptions != null 634 ? mRecentTaskDescriptions.size() : 0; 635 636 mRecentsContainer.setVisibility(items > 0 ? View.VISIBLE : View.GONE); 637 638 // Set description for accessibility 639 int numRecentApps = mRecentTaskDescriptions != null 640 ? mRecentTaskDescriptions.size() : 0; 641 String recentAppsAccessibilityDescription; 642 if (numRecentApps == 0) { 643 recentAppsAccessibilityDescription = 644 getResources().getString(R.string.status_bar_no_recent_apps); 645 } else { 646 recentAppsAccessibilityDescription = getResources().getQuantityString( 647 R.plurals.status_bar_accessibility_recent_apps, numRecentApps, numRecentApps); 648 } 649 setContentDescription(recentAppsAccessibilityDescription); 650 } 651 652 public boolean simulateClick(int persistentTaskId) { 653 if (mRecentsContainer instanceof RecentsScrollView){ 654 RecentsScrollView scrollView 655 = (RecentsScrollView) mRecentsContainer; 656 View v = scrollView.findViewForTask(persistentTaskId); 657 if (v != null) { 658 handleOnClick(v); 659 return true; 660 } 661 } 662 return false; 663 } 664 665 public void handleOnClick(View view) { 666 ViewHolder holder = (ViewHolder)view.getTag(); 667 TaskDescription ad = holder.taskDescription; 668 final Context context = view.getContext(); 669 final ActivityManager am = (ActivityManager) 670 context.getSystemService(Context.ACTIVITY_SERVICE); 671 Bitmap bm = holder.thumbnailViewImageBitmap; 672 boolean usingDrawingCache; 673 if (bm.getWidth() == holder.thumbnailViewImage.getWidth() && 674 bm.getHeight() == holder.thumbnailViewImage.getHeight()) { 675 usingDrawingCache = false; 676 } else { 677 holder.thumbnailViewImage.setDrawingCacheEnabled(true); 678 bm = holder.thumbnailViewImage.getDrawingCache(); 679 usingDrawingCache = true; 680 } 681 Bundle opts = (bm == null) ? 682 null : 683 ActivityOptions.makeThumbnailScaleUpAnimation( 684 holder.thumbnailViewImage, bm, 0, 0, null).toBundle(); 685 686 show(false); 687 if (ad.taskId >= 0) { 688 // This is an active task; it should just go to the foreground. 689 am.moveTaskToFront(ad.taskId, ActivityManager.MOVE_TASK_WITH_HOME, 690 opts); 691 } else { 692 Intent intent = ad.intent; 693 intent.addFlags(Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY 694 | Intent.FLAG_ACTIVITY_TASK_ON_HOME 695 | Intent.FLAG_ACTIVITY_NEW_TASK); 696 if (DEBUG) Log.v(TAG, "Starting activity " + intent); 697 try { 698 context.startActivityAsUser(intent, opts, 699 new UserHandle(UserHandle.USER_CURRENT)); 700 } catch (SecurityException e) { 701 Log.e(TAG, "Recents does not have the permission to launch " + intent, e); 702 } 703 } 704 if (usingDrawingCache) { 705 holder.thumbnailViewImage.setDrawingCacheEnabled(false); 706 } 707 } 708 709 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 710 handleOnClick(view); 711 } 712 713 public void handleSwipe(View view) { 714 TaskDescription ad = ((ViewHolder) view.getTag()).taskDescription; 715 if (ad == null) { 716 Log.v(TAG, "Not able to find activity description for swiped task; view=" + view + 717 " tag=" + view.getTag()); 718 return; 719 } 720 if (DEBUG) Log.v(TAG, "Jettison " + ad.getLabel()); 721 mRecentTaskDescriptions.remove(ad); 722 mRecentTasksLoader.remove(ad); 723 724 // Handled by widget containers to enable LayoutTransitions properly 725 // mListAdapter.notifyDataSetChanged(); 726 727 if (mRecentTaskDescriptions.size() == 0) { 728 dismissAndGoBack(); 729 } 730 731 // Currently, either direction means the same thing, so ignore direction and remove 732 // the task. 733 final ActivityManager am = (ActivityManager) 734 mContext.getSystemService(Context.ACTIVITY_SERVICE); 735 if (am != null) { 736 am.removeTask(ad.persistentTaskId, ActivityManager.REMOVE_TASK_KILL_PROCESS); 737 738 // Accessibility feedback 739 setContentDescription( 740 mContext.getString(R.string.accessibility_recents_item_dismissed, ad.getLabel())); 741 sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_SELECTED); 742 setContentDescription(null); 743 } 744 } 745 746 private void startApplicationDetailsActivity(String packageName) { 747 Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS, 748 Uri.fromParts("package", packageName, null)); 749 intent.setComponent(intent.resolveActivity(mContext.getPackageManager())); 750 TaskStackBuilder.create(getContext()) 751 .addNextIntentWithParentStack(intent).startActivities(); 752 } 753 754 public boolean onInterceptTouchEvent(MotionEvent ev) { 755 if (mPopup != null) { 756 return true; 757 } else { 758 return super.onInterceptTouchEvent(ev); 759 } 760 } 761 762 public void handleLongPress( 763 final View selectedView, final View anchorView, final View thumbnailView) { 764 thumbnailView.setSelected(true); 765 final PopupMenu popup = 766 new PopupMenu(mContext, anchorView == null ? selectedView : anchorView); 767 mPopup = popup; 768 popup.getMenuInflater().inflate(R.menu.recent_popup_menu, popup.getMenu()); 769 popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() { 770 public boolean onMenuItemClick(MenuItem item) { 771 if (item.getItemId() == R.id.recent_remove_item) { 772 mRecentsContainer.removeViewInLayout(selectedView); 773 } else if (item.getItemId() == R.id.recent_inspect_item) { 774 ViewHolder viewHolder = (ViewHolder) selectedView.getTag(); 775 if (viewHolder != null) { 776 final TaskDescription ad = viewHolder.taskDescription; 777 startApplicationDetailsActivity(ad.packageName); 778 show(false); 779 } else { 780 throw new IllegalStateException("Oops, no tag on view " + selectedView); 781 } 782 } else { 783 return false; 784 } 785 return true; 786 } 787 }); 788 popup.setOnDismissListener(new PopupMenu.OnDismissListener() { 789 public void onDismiss(PopupMenu menu) { 790 thumbnailView.setSelected(false); 791 mPopup = null; 792 } 793 }); 794 popup.show(); 795 } 796} 797