The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 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.view; |
| 18 | |
| 19 | import android.graphics.Rect; |
Jeff Brown | fbf0977 | 2011-01-16 14:06:57 -0800 | [diff] [blame] | 20 | import android.graphics.Region; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 21 | |
Chet Haase | 6e0ecb4 | 2010-11-03 19:41:18 -0700 | [diff] [blame] | 22 | import java.util.ArrayList; |
Chet Haase | 0f8ffd8 | 2012-06-07 07:48:48 -0700 | [diff] [blame] | 23 | import java.util.concurrent.CopyOnWriteArrayList; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 24 | |
| 25 | /** |
| 26 | * A view tree observer is used to register listeners that can be notified of global |
| 27 | * changes in the view tree. Such global events include, but are not limited to, |
| 28 | * layout of the whole tree, beginning of the drawing pass, touch mode change.... |
| 29 | * |
| 30 | * A ViewTreeObserver should never be instantiated by applications as it is provided |
| 31 | * by the views hierarchy. Refer to {@link android.view.View#getViewTreeObserver()} |
| 32 | * for more information. |
| 33 | */ |
| 34 | public final class ViewTreeObserver { |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 35 | // Recursive listeners use CopyOnWriteArrayList |
Chet Haase | 0f8ffd8 | 2012-06-07 07:48:48 -0700 | [diff] [blame] | 36 | private CopyOnWriteArrayList<OnGlobalFocusChangeListener> mOnGlobalFocusListeners; |
Chet Haase | 0f8ffd8 | 2012-06-07 07:48:48 -0700 | [diff] [blame] | 37 | private CopyOnWriteArrayList<OnTouchModeChangeListener> mOnTouchModeChangeListeners; |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 38 | |
| 39 | // Non-recursive listeners use CopyOnWriteArray |
| 40 | // Any listener invoked from ViewRootImpl.performTraversals() should not be recursive |
| 41 | private CopyOnWriteArray<OnGlobalLayoutListener> mOnGlobalLayoutListeners; |
| 42 | private CopyOnWriteArray<OnComputeInternalInsetsListener> mOnComputeInternalInsetsListeners; |
| 43 | private CopyOnWriteArray<OnScrollChangedListener> mOnScrollChangedListeners; |
| 44 | private CopyOnWriteArray<OnPreDrawListener> mOnPreDrawListeners; |
| 45 | |
| 46 | // These listeners cannot be mutated during dispatch |
Romain Guy | 25eba5c | 2012-04-04 17:29:03 -0700 | [diff] [blame] | 47 | private ArrayList<OnDrawListener> mOnDrawListeners; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 48 | |
| 49 | private boolean mAlive = true; |
| 50 | |
| 51 | /** |
| 52 | * Interface definition for a callback to be invoked when the focus state within |
| 53 | * the view tree changes. |
| 54 | */ |
| 55 | public interface OnGlobalFocusChangeListener { |
| 56 | /** |
| 57 | * Callback method to be invoked when the focus changes in the view tree. When |
| 58 | * the view tree transitions from touch mode to non-touch mode, oldFocus is null. |
| 59 | * When the view tree transitions from non-touch mode to touch mode, newFocus is |
| 60 | * null. When focus changes in non-touch mode (without transition from or to |
| 61 | * touch mode) either oldFocus or newFocus can be null. |
| 62 | * |
| 63 | * @param oldFocus The previously focused view, if any. |
| 64 | * @param newFocus The newly focused View, if any. |
| 65 | */ |
| 66 | public void onGlobalFocusChanged(View oldFocus, View newFocus); |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * Interface definition for a callback to be invoked when the global layout state |
| 71 | * or the visibility of views within the view tree changes. |
| 72 | */ |
| 73 | public interface OnGlobalLayoutListener { |
| 74 | /** |
| 75 | * Callback method to be invoked when the global layout state or the visibility of views |
| 76 | * within the view tree changes |
| 77 | */ |
| 78 | public void onGlobalLayout(); |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * Interface definition for a callback to be invoked when the view tree is about to be drawn. |
| 83 | */ |
| 84 | public interface OnPreDrawListener { |
| 85 | /** |
| 86 | * Callback method to be invoked when the view tree is about to be drawn. At this point, all |
| 87 | * views in the tree have been measured and given a frame. Clients can use this to adjust |
| 88 | * their scroll bounds or even to request a new layout before drawing occurs. |
| 89 | * |
| 90 | * @return Return true to proceed with the current drawing pass, or false to cancel. |
| 91 | * |
| 92 | * @see android.view.View#onMeasure |
| 93 | * @see android.view.View#onLayout |
| 94 | * @see android.view.View#onDraw |
| 95 | */ |
| 96 | public boolean onPreDraw(); |
| 97 | } |
| 98 | |
| 99 | /** |
Romain Guy | 25eba5c | 2012-04-04 17:29:03 -0700 | [diff] [blame] | 100 | * Interface definition for a callback to be invoked when the view tree is about to be drawn. |
| 101 | */ |
| 102 | public interface OnDrawListener { |
| 103 | /** |
| 104 | * <p>Callback method to be invoked when the view tree is about to be drawn. At this point, |
| 105 | * views cannot be modified in any way.</p> |
| 106 | * |
| 107 | * <p>Unlike with {@link OnPreDrawListener}, this method cannot be used to cancel the |
| 108 | * current drawing pass.</p> |
| 109 | * |
| 110 | * <p>An {@link OnDrawListener} listener <strong>cannot be added or removed</strong> |
| 111 | * from this method.</p> |
| 112 | * |
| 113 | * @see android.view.View#onMeasure |
| 114 | * @see android.view.View#onLayout |
| 115 | * @see android.view.View#onDraw |
| 116 | */ |
| 117 | public void onDraw(); |
| 118 | } |
| 119 | |
| 120 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 121 | * Interface definition for a callback to be invoked when the touch mode changes. |
| 122 | */ |
| 123 | public interface OnTouchModeChangeListener { |
| 124 | /** |
| 125 | * Callback method to be invoked when the touch mode changes. |
| 126 | * |
| 127 | * @param isInTouchMode True if the view hierarchy is now in touch mode, false otherwise. |
| 128 | */ |
| 129 | public void onTouchModeChanged(boolean isInTouchMode); |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * Interface definition for a callback to be invoked when |
| 134 | * something in the view tree has been scrolled. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 135 | */ |
| 136 | public interface OnScrollChangedListener { |
| 137 | /** |
| 138 | * Callback method to be invoked when something in the view tree |
| 139 | * has been scrolled. |
| 140 | */ |
| 141 | public void onScrollChanged(); |
| 142 | } |
| 143 | |
| 144 | /** |
| 145 | * Parameters used with OnComputeInternalInsetsListener. |
Dianne Hackborn | 935ae46 | 2009-04-13 16:11:55 -0700 | [diff] [blame] | 146 | * |
| 147 | * We are not yet ready to commit to this API and support it, so |
| 148 | * @hide |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 149 | */ |
| 150 | public final static class InternalInsetsInfo { |
| 151 | /** |
| 152 | * Offsets from the frame of the window at which the content of |
| 153 | * windows behind it should be placed. |
| 154 | */ |
| 155 | public final Rect contentInsets = new Rect(); |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 156 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 157 | /** |
Jeff Brown | fbf0977 | 2011-01-16 14:06:57 -0800 | [diff] [blame] | 158 | * Offsets from the frame of the window at which windows behind it |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 159 | * are visible. |
| 160 | */ |
| 161 | public final Rect visibleInsets = new Rect(); |
Jeff Brown | fbf0977 | 2011-01-16 14:06:57 -0800 | [diff] [blame] | 162 | |
| 163 | /** |
| 164 | * Touchable region defined relative to the origin of the frame of the window. |
| 165 | * Only used when {@link #setTouchableInsets(int)} is called with |
| 166 | * the option {@link #TOUCHABLE_INSETS_REGION}. |
| 167 | */ |
| 168 | public final Region touchableRegion = new Region(); |
| 169 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 170 | /** |
| 171 | * Option for {@link #setTouchableInsets(int)}: the entire window frame |
| 172 | * can be touched. |
| 173 | */ |
| 174 | public static final int TOUCHABLE_INSETS_FRAME = 0; |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 175 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 176 | /** |
| 177 | * Option for {@link #setTouchableInsets(int)}: the area inside of |
| 178 | * the content insets can be touched. |
| 179 | */ |
| 180 | public static final int TOUCHABLE_INSETS_CONTENT = 1; |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 181 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 182 | /** |
| 183 | * Option for {@link #setTouchableInsets(int)}: the area inside of |
| 184 | * the visible insets can be touched. |
| 185 | */ |
| 186 | public static final int TOUCHABLE_INSETS_VISIBLE = 2; |
Jeff Brown | fbf0977 | 2011-01-16 14:06:57 -0800 | [diff] [blame] | 187 | |
| 188 | /** |
| 189 | * Option for {@link #setTouchableInsets(int)}: the area inside of |
| 190 | * the provided touchable region in {@link #touchableRegion} can be touched. |
| 191 | */ |
| 192 | public static final int TOUCHABLE_INSETS_REGION = 3; |
| 193 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 194 | /** |
| 195 | * Set which parts of the window can be touched: either |
| 196 | * {@link #TOUCHABLE_INSETS_FRAME}, {@link #TOUCHABLE_INSETS_CONTENT}, |
Jeff Brown | fbf0977 | 2011-01-16 14:06:57 -0800 | [diff] [blame] | 197 | * {@link #TOUCHABLE_INSETS_VISIBLE}, or {@link #TOUCHABLE_INSETS_REGION}. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 198 | */ |
| 199 | public void setTouchableInsets(int val) { |
| 200 | mTouchableInsets = val; |
| 201 | } |
Romain Guy | 25eba5c | 2012-04-04 17:29:03 -0700 | [diff] [blame] | 202 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 203 | int mTouchableInsets; |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 204 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 205 | void reset() { |
Jeff Brown | fbf0977 | 2011-01-16 14:06:57 -0800 | [diff] [blame] | 206 | contentInsets.setEmpty(); |
| 207 | visibleInsets.setEmpty(); |
| 208 | touchableRegion.setEmpty(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 209 | mTouchableInsets = TOUCHABLE_INSETS_FRAME; |
| 210 | } |
Romain Guy | 25eba5c | 2012-04-04 17:29:03 -0700 | [diff] [blame] | 211 | |
| 212 | @Override |
| 213 | public int hashCode() { |
| 214 | int result = contentInsets != null ? contentInsets.hashCode() : 0; |
| 215 | result = 31 * result + (visibleInsets != null ? visibleInsets.hashCode() : 0); |
| 216 | result = 31 * result + (touchableRegion != null ? touchableRegion.hashCode() : 0); |
| 217 | result = 31 * result + mTouchableInsets; |
| 218 | return result; |
| 219 | } |
| 220 | |
Romain Guy | 1e878d2 | 2012-01-23 15:34:25 -0800 | [diff] [blame] | 221 | @Override |
| 222 | public boolean equals(Object o) { |
Romain Guy | 25eba5c | 2012-04-04 17:29:03 -0700 | [diff] [blame] | 223 | if (this == o) return true; |
| 224 | if (o == null || getClass() != o.getClass()) return false; |
| 225 | |
| 226 | InternalInsetsInfo other = (InternalInsetsInfo)o; |
| 227 | return mTouchableInsets == other.mTouchableInsets && |
| 228 | contentInsets.equals(other.contentInsets) && |
| 229 | visibleInsets.equals(other.visibleInsets) && |
| 230 | touchableRegion.equals(other.touchableRegion); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 231 | } |
Romain Guy | 25eba5c | 2012-04-04 17:29:03 -0700 | [diff] [blame] | 232 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 233 | void set(InternalInsetsInfo other) { |
| 234 | contentInsets.set(other.contentInsets); |
| 235 | visibleInsets.set(other.visibleInsets); |
Jeff Brown | fbf0977 | 2011-01-16 14:06:57 -0800 | [diff] [blame] | 236 | touchableRegion.set(other.touchableRegion); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 237 | mTouchableInsets = other.mTouchableInsets; |
| 238 | } |
| 239 | } |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 240 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 241 | /** |
| 242 | * Interface definition for a callback to be invoked when layout has |
| 243 | * completed and the client can compute its interior insets. |
Dianne Hackborn | 935ae46 | 2009-04-13 16:11:55 -0700 | [diff] [blame] | 244 | * |
| 245 | * We are not yet ready to commit to this API and support it, so |
| 246 | * @hide |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 247 | */ |
| 248 | public interface OnComputeInternalInsetsListener { |
| 249 | /** |
| 250 | * Callback method to be invoked when layout has completed and the |
| 251 | * client can compute its interior insets. |
| 252 | * |
| 253 | * @param inoutInfo Should be filled in by the implementation with |
| 254 | * the information about the insets of the window. This is called |
| 255 | * with whatever values the previous OnComputeInternalInsetsListener |
| 256 | * returned, if there are multiple such listeners in the window. |
| 257 | */ |
| 258 | public void onComputeInternalInsets(InternalInsetsInfo inoutInfo); |
| 259 | } |
| 260 | |
| 261 | /** |
| 262 | * Creates a new ViewTreeObserver. This constructor should not be called |
| 263 | */ |
| 264 | ViewTreeObserver() { |
| 265 | } |
| 266 | |
| 267 | /** |
| 268 | * Merges all the listeners registered on the specified observer with the listeners |
| 269 | * registered on this object. After this method is invoked, the specified observer |
| 270 | * will return false in {@link #isAlive()} and should not be used anymore. |
| 271 | * |
| 272 | * @param observer The ViewTreeObserver whose listeners must be added to this observer |
| 273 | */ |
| 274 | void merge(ViewTreeObserver observer) { |
| 275 | if (observer.mOnGlobalFocusListeners != null) { |
| 276 | if (mOnGlobalFocusListeners != null) { |
| 277 | mOnGlobalFocusListeners.addAll(observer.mOnGlobalFocusListeners); |
| 278 | } else { |
| 279 | mOnGlobalFocusListeners = observer.mOnGlobalFocusListeners; |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | if (observer.mOnGlobalLayoutListeners != null) { |
| 284 | if (mOnGlobalLayoutListeners != null) { |
| 285 | mOnGlobalLayoutListeners.addAll(observer.mOnGlobalLayoutListeners); |
| 286 | } else { |
| 287 | mOnGlobalLayoutListeners = observer.mOnGlobalLayoutListeners; |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | if (observer.mOnPreDrawListeners != null) { |
| 292 | if (mOnPreDrawListeners != null) { |
| 293 | mOnPreDrawListeners.addAll(observer.mOnPreDrawListeners); |
| 294 | } else { |
| 295 | mOnPreDrawListeners = observer.mOnPreDrawListeners; |
| 296 | } |
| 297 | } |
| 298 | |
| 299 | if (observer.mOnTouchModeChangeListeners != null) { |
| 300 | if (mOnTouchModeChangeListeners != null) { |
| 301 | mOnTouchModeChangeListeners.addAll(observer.mOnTouchModeChangeListeners); |
| 302 | } else { |
| 303 | mOnTouchModeChangeListeners = observer.mOnTouchModeChangeListeners; |
| 304 | } |
| 305 | } |
| 306 | |
| 307 | if (observer.mOnComputeInternalInsetsListeners != null) { |
| 308 | if (mOnComputeInternalInsetsListeners != null) { |
| 309 | mOnComputeInternalInsetsListeners.addAll(observer.mOnComputeInternalInsetsListeners); |
| 310 | } else { |
| 311 | mOnComputeInternalInsetsListeners = observer.mOnComputeInternalInsetsListeners; |
| 312 | } |
| 313 | } |
| 314 | |
Mark Brophy | 757c697 | 2011-10-25 17:01:28 +0100 | [diff] [blame] | 315 | if (observer.mOnScrollChangedListeners != null) { |
| 316 | if (mOnScrollChangedListeners != null) { |
| 317 | mOnScrollChangedListeners.addAll(observer.mOnScrollChangedListeners); |
| 318 | } else { |
| 319 | mOnScrollChangedListeners = observer.mOnScrollChangedListeners; |
| 320 | } |
| 321 | } |
| 322 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 323 | observer.kill(); |
| 324 | } |
| 325 | |
| 326 | /** |
| 327 | * Register a callback to be invoked when the focus state within the view tree changes. |
| 328 | * |
| 329 | * @param listener The callback to add |
| 330 | * |
| 331 | * @throws IllegalStateException If {@link #isAlive()} returns false |
| 332 | */ |
| 333 | public void addOnGlobalFocusChangeListener(OnGlobalFocusChangeListener listener) { |
| 334 | checkIsAlive(); |
| 335 | |
| 336 | if (mOnGlobalFocusListeners == null) { |
Chet Haase | 0f8ffd8 | 2012-06-07 07:48:48 -0700 | [diff] [blame] | 337 | mOnGlobalFocusListeners = new CopyOnWriteArrayList<OnGlobalFocusChangeListener>(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 338 | } |
| 339 | |
| 340 | mOnGlobalFocusListeners.add(listener); |
| 341 | } |
| 342 | |
| 343 | /** |
| 344 | * Remove a previously installed focus change callback. |
| 345 | * |
| 346 | * @param victim The callback to remove |
| 347 | * |
| 348 | * @throws IllegalStateException If {@link #isAlive()} returns false |
| 349 | * |
| 350 | * @see #addOnGlobalFocusChangeListener(OnGlobalFocusChangeListener) |
| 351 | */ |
| 352 | public void removeOnGlobalFocusChangeListener(OnGlobalFocusChangeListener victim) { |
| 353 | checkIsAlive(); |
| 354 | if (mOnGlobalFocusListeners == null) { |
| 355 | return; |
| 356 | } |
| 357 | mOnGlobalFocusListeners.remove(victim); |
| 358 | } |
| 359 | |
| 360 | /** |
| 361 | * Register a callback to be invoked when the global layout state or the visibility of views |
| 362 | * within the view tree changes |
| 363 | * |
| 364 | * @param listener The callback to add |
| 365 | * |
| 366 | * @throws IllegalStateException If {@link #isAlive()} returns false |
| 367 | */ |
| 368 | public void addOnGlobalLayoutListener(OnGlobalLayoutListener listener) { |
| 369 | checkIsAlive(); |
| 370 | |
| 371 | if (mOnGlobalLayoutListeners == null) { |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 372 | mOnGlobalLayoutListeners = new CopyOnWriteArray<OnGlobalLayoutListener>(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 373 | } |
| 374 | |
| 375 | mOnGlobalLayoutListeners.add(listener); |
| 376 | } |
| 377 | |
| 378 | /** |
| 379 | * Remove a previously installed global layout callback |
| 380 | * |
| 381 | * @param victim The callback to remove |
| 382 | * |
| 383 | * @throws IllegalStateException If {@link #isAlive()} returns false |
Romain Guy | 1e878d2 | 2012-01-23 15:34:25 -0800 | [diff] [blame] | 384 | * |
| 385 | * @deprecated Use #removeOnGlobalLayoutListener instead |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 386 | * |
| 387 | * @see #addOnGlobalLayoutListener(OnGlobalLayoutListener) |
| 388 | */ |
Romain Guy | 1e878d2 | 2012-01-23 15:34:25 -0800 | [diff] [blame] | 389 | @Deprecated |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 390 | public void removeGlobalOnLayoutListener(OnGlobalLayoutListener victim) { |
Romain Guy | 1e878d2 | 2012-01-23 15:34:25 -0800 | [diff] [blame] | 391 | removeOnGlobalLayoutListener(victim); |
| 392 | } |
| 393 | |
| 394 | /** |
| 395 | * Remove a previously installed global layout callback |
| 396 | * |
| 397 | * @param victim The callback to remove |
| 398 | * |
| 399 | * @throws IllegalStateException If {@link #isAlive()} returns false |
| 400 | * |
| 401 | * @see #addOnGlobalLayoutListener(OnGlobalLayoutListener) |
| 402 | */ |
| 403 | public void removeOnGlobalLayoutListener(OnGlobalLayoutListener victim) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 404 | checkIsAlive(); |
| 405 | if (mOnGlobalLayoutListeners == null) { |
| 406 | return; |
| 407 | } |
| 408 | mOnGlobalLayoutListeners.remove(victim); |
| 409 | } |
| 410 | |
| 411 | /** |
| 412 | * Register a callback to be invoked when the view tree is about to be drawn |
| 413 | * |
| 414 | * @param listener The callback to add |
| 415 | * |
| 416 | * @throws IllegalStateException If {@link #isAlive()} returns false |
| 417 | */ |
| 418 | public void addOnPreDrawListener(OnPreDrawListener listener) { |
| 419 | checkIsAlive(); |
| 420 | |
| 421 | if (mOnPreDrawListeners == null) { |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 422 | mOnPreDrawListeners = new CopyOnWriteArray<OnPreDrawListener>(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 423 | } |
| 424 | |
| 425 | mOnPreDrawListeners.add(listener); |
| 426 | } |
| 427 | |
| 428 | /** |
| 429 | * Remove a previously installed pre-draw callback |
| 430 | * |
| 431 | * @param victim The callback to remove |
| 432 | * |
| 433 | * @throws IllegalStateException If {@link #isAlive()} returns false |
| 434 | * |
| 435 | * @see #addOnPreDrawListener(OnPreDrawListener) |
| 436 | */ |
| 437 | public void removeOnPreDrawListener(OnPreDrawListener victim) { |
| 438 | checkIsAlive(); |
| 439 | if (mOnPreDrawListeners == null) { |
| 440 | return; |
| 441 | } |
| 442 | mOnPreDrawListeners.remove(victim); |
| 443 | } |
| 444 | |
| 445 | /** |
Romain Guy | 25eba5c | 2012-04-04 17:29:03 -0700 | [diff] [blame] | 446 | * <p>Register a callback to be invoked when the view tree is about to be drawn.</p> |
| 447 | * <p><strong>Note:</strong> this method <strong>cannot</strong> be invoked from |
| 448 | * {@link android.view.ViewTreeObserver.OnDrawListener#onDraw()}.</p> |
| 449 | * |
| 450 | * @param listener The callback to add |
| 451 | * |
| 452 | * @throws IllegalStateException If {@link #isAlive()} returns false |
| 453 | */ |
| 454 | public void addOnDrawListener(OnDrawListener listener) { |
| 455 | checkIsAlive(); |
| 456 | |
| 457 | if (mOnDrawListeners == null) { |
| 458 | mOnDrawListeners = new ArrayList<OnDrawListener>(); |
| 459 | } |
| 460 | |
| 461 | mOnDrawListeners.add(listener); |
| 462 | } |
| 463 | |
| 464 | /** |
| 465 | * <p>Remove a previously installed pre-draw callback.</p> |
| 466 | * <p><strong>Note:</strong> this method <strong>cannot</strong> be invoked from |
| 467 | * {@link android.view.ViewTreeObserver.OnDrawListener#onDraw()}.</p> |
| 468 | * |
| 469 | * @param victim The callback to remove |
| 470 | * |
| 471 | * @throws IllegalStateException If {@link #isAlive()} returns false |
| 472 | * |
| 473 | * @see #addOnDrawListener(OnDrawListener) |
| 474 | */ |
| 475 | public void removeOnDrawListener(OnDrawListener victim) { |
| 476 | checkIsAlive(); |
| 477 | if (mOnDrawListeners == null) { |
| 478 | return; |
| 479 | } |
| 480 | mOnDrawListeners.remove(victim); |
| 481 | } |
| 482 | |
| 483 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 484 | * Register a callback to be invoked when a view has been scrolled. |
| 485 | * |
| 486 | * @param listener The callback to add |
| 487 | * |
| 488 | * @throws IllegalStateException If {@link #isAlive()} returns false |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 489 | */ |
| 490 | public void addOnScrollChangedListener(OnScrollChangedListener listener) { |
| 491 | checkIsAlive(); |
| 492 | |
| 493 | if (mOnScrollChangedListeners == null) { |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 494 | mOnScrollChangedListeners = new CopyOnWriteArray<OnScrollChangedListener>(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 495 | } |
| 496 | |
| 497 | mOnScrollChangedListeners.add(listener); |
| 498 | } |
| 499 | |
| 500 | /** |
| 501 | * Remove a previously installed scroll-changed callback |
| 502 | * |
| 503 | * @param victim The callback to remove |
| 504 | * |
| 505 | * @throws IllegalStateException If {@link #isAlive()} returns false |
| 506 | * |
| 507 | * @see #addOnScrollChangedListener(OnScrollChangedListener) |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 508 | */ |
| 509 | public void removeOnScrollChangedListener(OnScrollChangedListener victim) { |
| 510 | checkIsAlive(); |
| 511 | if (mOnScrollChangedListeners == null) { |
| 512 | return; |
| 513 | } |
| 514 | mOnScrollChangedListeners.remove(victim); |
| 515 | } |
| 516 | |
| 517 | /** |
| 518 | * Register a callback to be invoked when the invoked when the touch mode changes. |
| 519 | * |
| 520 | * @param listener The callback to add |
| 521 | * |
| 522 | * @throws IllegalStateException If {@link #isAlive()} returns false |
| 523 | */ |
| 524 | public void addOnTouchModeChangeListener(OnTouchModeChangeListener listener) { |
| 525 | checkIsAlive(); |
| 526 | |
| 527 | if (mOnTouchModeChangeListeners == null) { |
Chet Haase | 0f8ffd8 | 2012-06-07 07:48:48 -0700 | [diff] [blame] | 528 | mOnTouchModeChangeListeners = new CopyOnWriteArrayList<OnTouchModeChangeListener>(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 529 | } |
| 530 | |
| 531 | mOnTouchModeChangeListeners.add(listener); |
| 532 | } |
| 533 | |
| 534 | /** |
| 535 | * Remove a previously installed touch mode change callback |
| 536 | * |
| 537 | * @param victim The callback to remove |
| 538 | * |
| 539 | * @throws IllegalStateException If {@link #isAlive()} returns false |
| 540 | * |
| 541 | * @see #addOnTouchModeChangeListener(OnTouchModeChangeListener) |
| 542 | */ |
| 543 | public void removeOnTouchModeChangeListener(OnTouchModeChangeListener victim) { |
| 544 | checkIsAlive(); |
| 545 | if (mOnTouchModeChangeListeners == null) { |
| 546 | return; |
| 547 | } |
| 548 | mOnTouchModeChangeListeners.remove(victim); |
| 549 | } |
| 550 | |
| 551 | /** |
| 552 | * Register a callback to be invoked when the invoked when it is time to |
| 553 | * compute the window's internal insets. |
| 554 | * |
| 555 | * @param listener The callback to add |
| 556 | * |
| 557 | * @throws IllegalStateException If {@link #isAlive()} returns false |
Dianne Hackborn | 935ae46 | 2009-04-13 16:11:55 -0700 | [diff] [blame] | 558 | * |
| 559 | * We are not yet ready to commit to this API and support it, so |
| 560 | * @hide |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 561 | */ |
| 562 | public void addOnComputeInternalInsetsListener(OnComputeInternalInsetsListener listener) { |
| 563 | checkIsAlive(); |
| 564 | |
| 565 | if (mOnComputeInternalInsetsListeners == null) { |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 566 | mOnComputeInternalInsetsListeners = |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 567 | new CopyOnWriteArray<OnComputeInternalInsetsListener>(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 568 | } |
| 569 | |
| 570 | mOnComputeInternalInsetsListeners.add(listener); |
| 571 | } |
| 572 | |
| 573 | /** |
| 574 | * Remove a previously installed internal insets computation callback |
| 575 | * |
| 576 | * @param victim The callback to remove |
| 577 | * |
| 578 | * @throws IllegalStateException If {@link #isAlive()} returns false |
| 579 | * |
| 580 | * @see #addOnComputeInternalInsetsListener(OnComputeInternalInsetsListener) |
Dianne Hackborn | 935ae46 | 2009-04-13 16:11:55 -0700 | [diff] [blame] | 581 | * |
| 582 | * We are not yet ready to commit to this API and support it, so |
| 583 | * @hide |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 584 | */ |
| 585 | public void removeOnComputeInternalInsetsListener(OnComputeInternalInsetsListener victim) { |
| 586 | checkIsAlive(); |
| 587 | if (mOnComputeInternalInsetsListeners == null) { |
| 588 | return; |
| 589 | } |
| 590 | mOnComputeInternalInsetsListeners.remove(victim); |
| 591 | } |
| 592 | |
| 593 | private void checkIsAlive() { |
| 594 | if (!mAlive) { |
| 595 | throw new IllegalStateException("This ViewTreeObserver is not alive, call " |
| 596 | + "getViewTreeObserver() again"); |
| 597 | } |
| 598 | } |
| 599 | |
| 600 | /** |
| 601 | * Indicates whether this ViewTreeObserver is alive. When an observer is not alive, |
| 602 | * any call to a method (except this one) will throw an exception. |
| 603 | * |
| 604 | * If an application keeps a long-lived reference to this ViewTreeObserver, it should |
| 605 | * always check for the result of this method before calling any other method. |
| 606 | * |
| 607 | * @return True if this object is alive and be used, false otherwise. |
| 608 | */ |
| 609 | public boolean isAlive() { |
| 610 | return mAlive; |
| 611 | } |
| 612 | |
| 613 | /** |
| 614 | * Marks this ViewTreeObserver as not alive. After invoking this method, invoking |
| 615 | * any other method but {@link #isAlive()} and {@link #kill()} will throw an Exception. |
| 616 | * |
| 617 | * @hide |
| 618 | */ |
| 619 | private void kill() { |
| 620 | mAlive = false; |
| 621 | } |
| 622 | |
| 623 | /** |
| 624 | * Notifies registered listeners that focus has changed. |
| 625 | */ |
| 626 | final void dispatchOnGlobalFocusChange(View oldFocus, View newFocus) { |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 627 | // NOTE: because of the use of CopyOnWriteArrayList, we *must* use an iterator to |
| 628 | // perform the dispatching. The iterator is a safe guard against listeners that |
| 629 | // could mutate the list by calling the various add/remove methods. This prevents |
| 630 | // the array from being modified while we iterate it. |
Chet Haase | 0f8ffd8 | 2012-06-07 07:48:48 -0700 | [diff] [blame] | 631 | final CopyOnWriteArrayList<OnGlobalFocusChangeListener> listeners = mOnGlobalFocusListeners; |
Chet Haase | 6e0ecb4 | 2010-11-03 19:41:18 -0700 | [diff] [blame] | 632 | if (listeners != null && listeners.size() > 0) { |
Chet Haase | 0f8ffd8 | 2012-06-07 07:48:48 -0700 | [diff] [blame] | 633 | for (OnGlobalFocusChangeListener listener : listeners) { |
| 634 | listener.onGlobalFocusChanged(oldFocus, newFocus); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 635 | } |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | /** |
| 640 | * Notifies registered listeners that a global layout happened. This can be called |
| 641 | * manually if you are forcing a layout on a View or a hierarchy of Views that are |
| 642 | * not attached to a Window or in the GONE state. |
| 643 | */ |
| 644 | public final void dispatchOnGlobalLayout() { |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 645 | // NOTE: because of the use of CopyOnWriteArrayList, we *must* use an iterator to |
| 646 | // perform the dispatching. The iterator is a safe guard against listeners that |
| 647 | // could mutate the list by calling the various add/remove methods. This prevents |
| 648 | // the array from being modified while we iterate it. |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 649 | final CopyOnWriteArray<OnGlobalLayoutListener> listeners = mOnGlobalLayoutListeners; |
Chet Haase | 6e0ecb4 | 2010-11-03 19:41:18 -0700 | [diff] [blame] | 650 | if (listeners != null && listeners.size() > 0) { |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 651 | CopyOnWriteArray.Access<OnGlobalLayoutListener> access = listeners.start(); |
| 652 | try { |
| 653 | int count = access.size(); |
| 654 | for (int i = 0; i < count; i++) { |
| 655 | access.get(i).onGlobalLayout(); |
| 656 | } |
| 657 | } finally { |
| 658 | listeners.end(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 659 | } |
| 660 | } |
| 661 | } |
| 662 | |
| 663 | /** |
| 664 | * Notifies registered listeners that the drawing pass is about to start. If a |
| 665 | * listener returns true, then the drawing pass is canceled and rescheduled. This can |
| 666 | * be called manually if you are forcing the drawing on a View or a hierarchy of Views |
| 667 | * that are not attached to a Window or in the GONE state. |
| 668 | * |
| 669 | * @return True if the current draw should be canceled and resceduled, false otherwise. |
| 670 | */ |
Romain Guy | 25eba5c | 2012-04-04 17:29:03 -0700 | [diff] [blame] | 671 | @SuppressWarnings("unchecked") |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 672 | public final boolean dispatchOnPreDraw() { |
| 673 | boolean cancelDraw = false; |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 674 | final CopyOnWriteArray<OnPreDrawListener> listeners = mOnPreDrawListeners; |
| 675 | if (listeners != null && listeners.size() > 0) { |
| 676 | CopyOnWriteArray.Access<OnPreDrawListener> access = listeners.start(); |
| 677 | try { |
| 678 | int count = access.size(); |
| 679 | for (int i = 0; i < count; i++) { |
| 680 | cancelDraw |= !(access.get(i).onPreDraw()); |
| 681 | } |
| 682 | } finally { |
| 683 | listeners.end(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 684 | } |
| 685 | } |
| 686 | return cancelDraw; |
| 687 | } |
| 688 | |
| 689 | /** |
Romain Guy | 25eba5c | 2012-04-04 17:29:03 -0700 | [diff] [blame] | 690 | * Notifies registered listeners that the drawing pass is about to start. |
| 691 | */ |
| 692 | public final void dispatchOnDraw() { |
| 693 | if (mOnDrawListeners != null) { |
| 694 | final ArrayList<OnDrawListener> listeners = mOnDrawListeners; |
| 695 | int numListeners = listeners.size(); |
| 696 | for (int i = 0; i < numListeners; ++i) { |
| 697 | listeners.get(i).onDraw(); |
| 698 | } |
| 699 | } |
| 700 | } |
| 701 | |
| 702 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 703 | * Notifies registered listeners that the touch mode has changed. |
| 704 | * |
| 705 | * @param inTouchMode True if the touch mode is now enabled, false otherwise. |
| 706 | */ |
| 707 | final void dispatchOnTouchModeChanged(boolean inTouchMode) { |
Chet Haase | 0f8ffd8 | 2012-06-07 07:48:48 -0700 | [diff] [blame] | 708 | final CopyOnWriteArrayList<OnTouchModeChangeListener> listeners = |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 709 | mOnTouchModeChangeListeners; |
Chet Haase | 6e0ecb4 | 2010-11-03 19:41:18 -0700 | [diff] [blame] | 710 | if (listeners != null && listeners.size() > 0) { |
Chet Haase | 0f8ffd8 | 2012-06-07 07:48:48 -0700 | [diff] [blame] | 711 | for (OnTouchModeChangeListener listener : listeners) { |
| 712 | listener.onTouchModeChanged(inTouchMode); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 713 | } |
| 714 | } |
| 715 | } |
| 716 | |
| 717 | /** |
| 718 | * Notifies registered listeners that something has scrolled. |
| 719 | */ |
| 720 | final void dispatchOnScrollChanged() { |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 721 | // NOTE: because of the use of CopyOnWriteArrayList, we *must* use an iterator to |
| 722 | // perform the dispatching. The iterator is a safe guard against listeners that |
| 723 | // could mutate the list by calling the various add/remove methods. This prevents |
| 724 | // the array from being modified while we iterate it. |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 725 | final CopyOnWriteArray<OnScrollChangedListener> listeners = mOnScrollChangedListeners; |
Chet Haase | 6e0ecb4 | 2010-11-03 19:41:18 -0700 | [diff] [blame] | 726 | if (listeners != null && listeners.size() > 0) { |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 727 | CopyOnWriteArray.Access<OnScrollChangedListener> access = listeners.start(); |
| 728 | try { |
| 729 | int count = access.size(); |
| 730 | for (int i = 0; i < count; i++) { |
| 731 | access.get(i).onScrollChanged(); |
| 732 | } |
| 733 | } finally { |
| 734 | listeners.end(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 735 | } |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | /** |
| 740 | * Returns whether there are listeners for computing internal insets. |
| 741 | */ |
| 742 | final boolean hasComputeInternalInsetsListeners() { |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 743 | final CopyOnWriteArray<OnComputeInternalInsetsListener> listeners = |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 744 | mOnComputeInternalInsetsListeners; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 745 | return (listeners != null && listeners.size() > 0); |
| 746 | } |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 747 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 748 | /** |
| 749 | * Calls all listeners to compute the current insets. |
| 750 | */ |
| 751 | final void dispatchOnComputeInternalInsets(InternalInsetsInfo inoutInfo) { |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 752 | // NOTE: because of the use of CopyOnWriteArrayList, we *must* use an iterator to |
| 753 | // perform the dispatching. The iterator is a safe guard against listeners that |
| 754 | // could mutate the list by calling the various add/remove methods. This prevents |
| 755 | // the array from being modified while we iterate it. |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 756 | final CopyOnWriteArray<OnComputeInternalInsetsListener> listeners = |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 757 | mOnComputeInternalInsetsListeners; |
Chet Haase | 6e0ecb4 | 2010-11-03 19:41:18 -0700 | [diff] [blame] | 758 | if (listeners != null && listeners.size() > 0) { |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 759 | CopyOnWriteArray.Access<OnComputeInternalInsetsListener> access = listeners.start(); |
| 760 | try { |
| 761 | int count = access.size(); |
| 762 | for (int i = 0; i < count; i++) { |
| 763 | access.get(i).onComputeInternalInsets(inoutInfo); |
| 764 | } |
| 765 | } finally { |
| 766 | listeners.end(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 767 | } |
| 768 | } |
| 769 | } |
Romain Guy | c39ed4a | 2012-06-12 12:06:46 -0700 | [diff] [blame^] | 770 | |
| 771 | /** |
| 772 | * Copy on write array. This array is not thread safe, and only one loop can |
| 773 | * iterate over this array at any given time. This class avoids allocations |
| 774 | * until a concurrent modification happens. |
| 775 | * |
| 776 | * Usage: |
| 777 | * |
| 778 | * CopyOnWriteArray.Access<MyData> access = array.start(); |
| 779 | * try { |
| 780 | * for (int i = 0; i < access.size(); i++) { |
| 781 | * MyData d = access.get(i); |
| 782 | * } |
| 783 | * } finally { |
| 784 | * access.end(); |
| 785 | * } |
| 786 | */ |
| 787 | static class CopyOnWriteArray<T> { |
| 788 | private ArrayList<T> mData = new ArrayList<T>(); |
| 789 | private ArrayList<T> mDataCopy; |
| 790 | |
| 791 | private final Access<T> mAccess = new Access<T>(); |
| 792 | |
| 793 | private boolean mStart; |
| 794 | |
| 795 | static class Access<T> { |
| 796 | private ArrayList<T> mData; |
| 797 | private int mSize; |
| 798 | |
| 799 | T get(int index) { |
| 800 | return mData.get(index); |
| 801 | } |
| 802 | |
| 803 | int size() { |
| 804 | return mSize; |
| 805 | } |
| 806 | } |
| 807 | |
| 808 | CopyOnWriteArray() { |
| 809 | } |
| 810 | |
| 811 | private ArrayList<T> getArray() { |
| 812 | if (mStart) { |
| 813 | if (mDataCopy == null) mDataCopy = new ArrayList<T>(mData); |
| 814 | return mDataCopy; |
| 815 | } |
| 816 | return mData; |
| 817 | } |
| 818 | |
| 819 | Access<T> start() { |
| 820 | if (mStart) throw new IllegalStateException("Iteration already started"); |
| 821 | mStart = true; |
| 822 | mDataCopy = null; |
| 823 | mAccess.mData = mData; |
| 824 | mAccess.mSize = mData.size(); |
| 825 | return mAccess; |
| 826 | } |
| 827 | |
| 828 | void end() { |
| 829 | if (!mStart) throw new IllegalStateException("Iteration not started"); |
| 830 | mStart = false; |
| 831 | if (mDataCopy != null) { |
| 832 | mData = mDataCopy; |
| 833 | } |
| 834 | mDataCopy = null; |
| 835 | } |
| 836 | |
| 837 | int size() { |
| 838 | return getArray().size(); |
| 839 | } |
| 840 | |
| 841 | void add(T item) { |
| 842 | getArray().add(item); |
| 843 | } |
| 844 | |
| 845 | void addAll(CopyOnWriteArray<T> array) { |
| 846 | getArray().addAll(array.mData); |
| 847 | } |
| 848 | |
| 849 | void remove(T item) { |
| 850 | getArray().remove(item); |
| 851 | } |
| 852 | |
| 853 | void clear() { |
| 854 | getArray().clear(); |
| 855 | } |
| 856 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 857 | } |