1/* 2 * Copyright (C) 2010 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.internal.widget; 18 19import android.animation.LayoutTransition; 20import android.app.ActionBar; 21import android.app.ActionBar.OnNavigationListener; 22import android.content.Context; 23import android.content.pm.ApplicationInfo; 24import android.content.pm.PackageManager; 25import android.content.res.Configuration; 26import android.content.res.TypedArray; 27import android.graphics.drawable.Drawable; 28import android.os.Parcel; 29import android.os.Parcelable; 30import android.text.Layout; 31import android.text.TextUtils; 32import android.util.AttributeSet; 33import android.view.CollapsibleActionView; 34import android.view.Gravity; 35import android.view.LayoutInflater; 36import android.view.Menu; 37import android.view.MenuItem; 38import android.view.MotionEvent; 39import android.view.View; 40import android.view.ViewGroup; 41import android.view.ViewParent; 42import android.view.Window; 43import android.view.accessibility.AccessibilityEvent; 44import android.widget.AdapterView; 45import android.widget.FrameLayout; 46import android.widget.ImageView; 47import android.widget.LinearLayout; 48import android.widget.ProgressBar; 49import android.widget.Spinner; 50import android.widget.SpinnerAdapter; 51import android.widget.TextView; 52import com.android.internal.R; 53import com.android.internal.transition.ActionBarTransition; 54import com.android.internal.view.menu.ActionMenuItem; 55import com.android.internal.view.menu.ActionMenuPresenter; 56import com.android.internal.view.menu.ActionMenuView; 57import com.android.internal.view.menu.MenuBuilder; 58import com.android.internal.view.menu.MenuItemImpl; 59import com.android.internal.view.menu.MenuPresenter; 60import com.android.internal.view.menu.MenuView; 61import com.android.internal.view.menu.SubMenuBuilder; 62 63/** 64 * @hide 65 */ 66public class ActionBarView extends AbsActionBarView { 67 private static final String TAG = "ActionBarView"; 68 69 /** 70 * Display options applied by default 71 */ 72 public static final int DISPLAY_DEFAULT = 0; 73 74 /** 75 * Display options that require re-layout as opposed to a simple invalidate 76 */ 77 private static final int DISPLAY_RELAYOUT_MASK = 78 ActionBar.DISPLAY_SHOW_HOME | 79 ActionBar.DISPLAY_USE_LOGO | 80 ActionBar.DISPLAY_HOME_AS_UP | 81 ActionBar.DISPLAY_SHOW_CUSTOM | 82 ActionBar.DISPLAY_SHOW_TITLE | 83 ActionBar.DISPLAY_TITLE_MULTIPLE_LINES; 84 85 private static final int DEFAULT_CUSTOM_GRAVITY = Gravity.START | Gravity.CENTER_VERTICAL; 86 87 private int mNavigationMode; 88 private int mDisplayOptions = -1; 89 private CharSequence mTitle; 90 private CharSequence mSubtitle; 91 private Drawable mIcon; 92 private Drawable mLogo; 93 private CharSequence mHomeDescription; 94 private int mHomeDescriptionRes; 95 96 private HomeView mHomeLayout; 97 private HomeView mExpandedHomeLayout; 98 private LinearLayout mTitleLayout; 99 private TextView mTitleView; 100 private TextView mSubtitleView; 101 private ViewGroup mUpGoerFive; 102 103 private Spinner mSpinner; 104 private LinearLayout mListNavLayout; 105 private ScrollingTabContainerView mTabScrollView; 106 private View mCustomNavView; 107 private ProgressBar mProgressView; 108 private ProgressBar mIndeterminateProgressView; 109 110 private int mProgressBarPadding; 111 private int mItemPadding; 112 113 private int mTitleStyleRes; 114 private int mSubtitleStyleRes; 115 private int mProgressStyle; 116 private int mIndeterminateProgressStyle; 117 118 private boolean mUserTitle; 119 private boolean mIncludeTabs; 120 private boolean mIsCollapsable; 121 private boolean mIsCollapsed; 122 private boolean mWasHomeEnabled; // Was it enabled before action view expansion? 123 124 private MenuBuilder mOptionsMenu; 125 private boolean mMenuPrepared; 126 127 private ActionBarContextView mContextView; 128 129 private ActionMenuItem mLogoNavItem; 130 131 private SpinnerAdapter mSpinnerAdapter; 132 private OnNavigationListener mCallback; 133 134 private Runnable mTabSelector; 135 136 private ExpandedActionViewMenuPresenter mExpandedMenuPresenter; 137 View mExpandedActionView; 138 139 Window.Callback mWindowCallback; 140 141 private final AdapterView.OnItemSelectedListener mNavItemSelectedListener = 142 new AdapterView.OnItemSelectedListener() { 143 public void onItemSelected(AdapterView parent, View view, int position, long id) { 144 if (mCallback != null) { 145 mCallback.onNavigationItemSelected(position, id); 146 } 147 } 148 public void onNothingSelected(AdapterView parent) { 149 // Do nothing 150 } 151 }; 152 153 private final OnClickListener mExpandedActionViewUpListener = new OnClickListener() { 154 @Override 155 public void onClick(View v) { 156 final MenuItemImpl item = mExpandedMenuPresenter.mCurrentExpandedItem; 157 if (item != null) { 158 item.collapseActionView(); 159 } 160 } 161 }; 162 163 private final OnClickListener mUpClickListener = new OnClickListener() { 164 public void onClick(View v) { 165 if (mMenuPrepared) { 166 // Only invoke the window callback if the options menu has been initialized. 167 mWindowCallback.onMenuItemSelected(Window.FEATURE_OPTIONS_PANEL, mLogoNavItem); 168 } 169 } 170 }; 171 172 public ActionBarView(Context context, AttributeSet attrs) { 173 super(context, attrs); 174 175 // Background is always provided by the container. 176 setBackgroundResource(0); 177 178 TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.ActionBar, 179 com.android.internal.R.attr.actionBarStyle, 0); 180 181 ApplicationInfo appInfo = context.getApplicationInfo(); 182 PackageManager pm = context.getPackageManager(); 183 mNavigationMode = a.getInt(R.styleable.ActionBar_navigationMode, 184 ActionBar.NAVIGATION_MODE_STANDARD); 185 mTitle = a.getText(R.styleable.ActionBar_title); 186 mSubtitle = a.getText(R.styleable.ActionBar_subtitle); 187 mLogo = a.getDrawable(R.styleable.ActionBar_logo); 188 mIcon = a.getDrawable(R.styleable.ActionBar_icon); 189 190 final LayoutInflater inflater = LayoutInflater.from(context); 191 192 final int homeResId = a.getResourceId( 193 com.android.internal.R.styleable.ActionBar_homeLayout, 194 com.android.internal.R.layout.action_bar_home); 195 196 mUpGoerFive = (ViewGroup) inflater.inflate( 197 com.android.internal.R.layout.action_bar_up_container, this, false); 198 mHomeLayout = (HomeView) inflater.inflate(homeResId, mUpGoerFive, false); 199 200 mExpandedHomeLayout = (HomeView) inflater.inflate(homeResId, mUpGoerFive, false); 201 mExpandedHomeLayout.setShowUp(true); 202 mExpandedHomeLayout.setOnClickListener(mExpandedActionViewUpListener); 203 mExpandedHomeLayout.setContentDescription(getResources().getText( 204 R.string.action_bar_up_description)); 205 206 // This needs to highlight/be focusable on its own. 207 // TODO: Clean up the handoff between expanded/normal. 208 final Drawable upBackground = mUpGoerFive.getBackground(); 209 if (upBackground != null) { 210 mExpandedHomeLayout.setBackground(upBackground.getConstantState().newDrawable()); 211 } 212 mExpandedHomeLayout.setEnabled(true); 213 mExpandedHomeLayout.setFocusable(true); 214 215 mTitleStyleRes = a.getResourceId(R.styleable.ActionBar_titleTextStyle, 0); 216 mSubtitleStyleRes = a.getResourceId(R.styleable.ActionBar_subtitleTextStyle, 0); 217 mProgressStyle = a.getResourceId(R.styleable.ActionBar_progressBarStyle, 0); 218 mIndeterminateProgressStyle = a.getResourceId( 219 R.styleable.ActionBar_indeterminateProgressStyle, 0); 220 221 mProgressBarPadding = a.getDimensionPixelOffset(R.styleable.ActionBar_progressBarPadding, 0); 222 mItemPadding = a.getDimensionPixelOffset(R.styleable.ActionBar_itemPadding, 0); 223 224 setDisplayOptions(a.getInt(R.styleable.ActionBar_displayOptions, DISPLAY_DEFAULT)); 225 226 final int customNavId = a.getResourceId(R.styleable.ActionBar_customNavigationLayout, 0); 227 if (customNavId != 0) { 228 mCustomNavView = (View) inflater.inflate(customNavId, this, false); 229 mNavigationMode = ActionBar.NAVIGATION_MODE_STANDARD; 230 setDisplayOptions(mDisplayOptions | ActionBar.DISPLAY_SHOW_CUSTOM); 231 } 232 233 mContentHeight = a.getLayoutDimension(R.styleable.ActionBar_height, 0); 234 235 a.recycle(); 236 237 mLogoNavItem = new ActionMenuItem(context, 0, android.R.id.home, 0, 0, mTitle); 238 239 mUpGoerFive.setOnClickListener(mUpClickListener); 240 mUpGoerFive.setClickable(true); 241 mUpGoerFive.setFocusable(true); 242 243 if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 244 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 245 } 246 } 247 248 @Override 249 protected void onConfigurationChanged(Configuration newConfig) { 250 super.onConfigurationChanged(newConfig); 251 252 mTitleView = null; 253 mSubtitleView = null; 254 if (mTitleLayout != null && mTitleLayout.getParent() == mUpGoerFive) { 255 mUpGoerFive.removeView(mTitleLayout); 256 } 257 mTitleLayout = null; 258 if ((mDisplayOptions & ActionBar.DISPLAY_SHOW_TITLE) != 0) { 259 initTitle(); 260 } 261 262 if (mHomeDescriptionRes != 0) { 263 setHomeActionContentDescription(mHomeDescriptionRes); 264 } 265 266 if (mTabScrollView != null && mIncludeTabs) { 267 ViewGroup.LayoutParams lp = mTabScrollView.getLayoutParams(); 268 if (lp != null) { 269 lp.width = LayoutParams.WRAP_CONTENT; 270 lp.height = LayoutParams.MATCH_PARENT; 271 } 272 mTabScrollView.setAllowCollapse(true); 273 } 274 } 275 276 /** 277 * Set the window callback used to invoke menu items; used for dispatching home button presses. 278 * @param cb Window callback to dispatch to 279 */ 280 public void setWindowCallback(Window.Callback cb) { 281 mWindowCallback = cb; 282 } 283 284 @Override 285 public void onDetachedFromWindow() { 286 super.onDetachedFromWindow(); 287 removeCallbacks(mTabSelector); 288 if (mActionMenuPresenter != null) { 289 mActionMenuPresenter.hideOverflowMenu(); 290 mActionMenuPresenter.hideSubMenus(); 291 } 292 } 293 294 @Override 295 public boolean shouldDelayChildPressedState() { 296 return false; 297 } 298 299 public void initProgress() { 300 mProgressView = new ProgressBar(mContext, null, 0, mProgressStyle); 301 mProgressView.setId(R.id.progress_horizontal); 302 mProgressView.setMax(10000); 303 mProgressView.setVisibility(GONE); 304 addView(mProgressView); 305 } 306 307 public void initIndeterminateProgress() { 308 mIndeterminateProgressView = new ProgressBar(mContext, null, 0, 309 mIndeterminateProgressStyle); 310 mIndeterminateProgressView.setId(R.id.progress_circular); 311 mIndeterminateProgressView.setVisibility(GONE); 312 addView(mIndeterminateProgressView); 313 } 314 315 @Override 316 public void setSplitActionBar(boolean splitActionBar) { 317 if (mSplitActionBar != splitActionBar) { 318 if (mMenuView != null) { 319 final ViewGroup oldParent = (ViewGroup) mMenuView.getParent(); 320 if (oldParent != null) { 321 oldParent.removeView(mMenuView); 322 } 323 if (splitActionBar) { 324 if (mSplitView != null) { 325 mSplitView.addView(mMenuView); 326 } 327 mMenuView.getLayoutParams().width = LayoutParams.MATCH_PARENT; 328 } else { 329 addView(mMenuView); 330 mMenuView.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 331 } 332 mMenuView.requestLayout(); 333 } 334 if (mSplitView != null) { 335 mSplitView.setVisibility(splitActionBar ? VISIBLE : GONE); 336 } 337 338 if (mActionMenuPresenter != null) { 339 if (!splitActionBar) { 340 mActionMenuPresenter.setExpandedActionViewsExclusive( 341 getResources().getBoolean( 342 com.android.internal.R.bool.action_bar_expanded_action_views_exclusive)); 343 } else { 344 mActionMenuPresenter.setExpandedActionViewsExclusive(false); 345 // Allow full screen width in split mode. 346 mActionMenuPresenter.setWidthLimit( 347 getContext().getResources().getDisplayMetrics().widthPixels, true); 348 // No limit to the item count; use whatever will fit. 349 mActionMenuPresenter.setItemLimit(Integer.MAX_VALUE); 350 } 351 } 352 super.setSplitActionBar(splitActionBar); 353 } 354 } 355 356 public boolean isSplitActionBar() { 357 return mSplitActionBar; 358 } 359 360 public boolean hasEmbeddedTabs() { 361 return mIncludeTabs; 362 } 363 364 public void setEmbeddedTabView(ScrollingTabContainerView tabs) { 365 if (mTabScrollView != null) { 366 removeView(mTabScrollView); 367 } 368 mTabScrollView = tabs; 369 mIncludeTabs = tabs != null; 370 if (mIncludeTabs && mNavigationMode == ActionBar.NAVIGATION_MODE_TABS) { 371 addView(mTabScrollView); 372 ViewGroup.LayoutParams lp = mTabScrollView.getLayoutParams(); 373 lp.width = LayoutParams.WRAP_CONTENT; 374 lp.height = LayoutParams.MATCH_PARENT; 375 tabs.setAllowCollapse(true); 376 } 377 } 378 379 public void setCallback(OnNavigationListener callback) { 380 mCallback = callback; 381 } 382 383 public void setMenuPrepared() { 384 mMenuPrepared = true; 385 } 386 387 public void setMenu(Menu menu, MenuPresenter.Callback cb) { 388 if (menu == mOptionsMenu) return; 389 390 if (mOptionsMenu != null) { 391 mOptionsMenu.removeMenuPresenter(mActionMenuPresenter); 392 mOptionsMenu.removeMenuPresenter(mExpandedMenuPresenter); 393 } 394 395 MenuBuilder builder = (MenuBuilder) menu; 396 mOptionsMenu = builder; 397 if (mMenuView != null) { 398 final ViewGroup oldParent = (ViewGroup) mMenuView.getParent(); 399 if (oldParent != null) { 400 oldParent.removeView(mMenuView); 401 } 402 } 403 if (mActionMenuPresenter == null) { 404 mActionMenuPresenter = new ActionMenuPresenter(mContext); 405 mActionMenuPresenter.setCallback(cb); 406 mActionMenuPresenter.setId(com.android.internal.R.id.action_menu_presenter); 407 mExpandedMenuPresenter = new ExpandedActionViewMenuPresenter(); 408 } 409 410 ActionMenuView menuView; 411 final LayoutParams layoutParams = new LayoutParams(LayoutParams.WRAP_CONTENT, 412 LayoutParams.MATCH_PARENT); 413 if (!mSplitActionBar) { 414 mActionMenuPresenter.setExpandedActionViewsExclusive( 415 getResources().getBoolean( 416 com.android.internal.R.bool.action_bar_expanded_action_views_exclusive)); 417 configPresenters(builder); 418 menuView = (ActionMenuView) mActionMenuPresenter.getMenuView(this); 419 final ViewGroup oldParent = (ViewGroup) menuView.getParent(); 420 if (oldParent != null && oldParent != this) { 421 oldParent.removeView(menuView); 422 } 423 addView(menuView, layoutParams); 424 } else { 425 mActionMenuPresenter.setExpandedActionViewsExclusive(false); 426 // Allow full screen width in split mode. 427 mActionMenuPresenter.setWidthLimit( 428 getContext().getResources().getDisplayMetrics().widthPixels, true); 429 // No limit to the item count; use whatever will fit. 430 mActionMenuPresenter.setItemLimit(Integer.MAX_VALUE); 431 // Span the whole width 432 layoutParams.width = LayoutParams.MATCH_PARENT; 433 configPresenters(builder); 434 menuView = (ActionMenuView) mActionMenuPresenter.getMenuView(this); 435 if (mSplitView != null) { 436 final ViewGroup oldParent = (ViewGroup) menuView.getParent(); 437 if (oldParent != null && oldParent != mSplitView) { 438 oldParent.removeView(menuView); 439 } 440 menuView.setVisibility(getAnimatedVisibility()); 441 mSplitView.addView(menuView, layoutParams); 442 } else { 443 // We'll add this later if we missed it this time. 444 menuView.setLayoutParams(layoutParams); 445 } 446 } 447 mMenuView = menuView; 448 } 449 450 private void configPresenters(MenuBuilder builder) { 451 if (builder != null) { 452 builder.addMenuPresenter(mActionMenuPresenter); 453 builder.addMenuPresenter(mExpandedMenuPresenter); 454 } else { 455 mActionMenuPresenter.initForMenu(mContext, null); 456 mExpandedMenuPresenter.initForMenu(mContext, null); 457 mActionMenuPresenter.updateMenuView(true); 458 mExpandedMenuPresenter.updateMenuView(true); 459 } 460 } 461 462 public boolean hasExpandedActionView() { 463 return mExpandedMenuPresenter != null && 464 mExpandedMenuPresenter.mCurrentExpandedItem != null; 465 } 466 467 public void collapseActionView() { 468 final MenuItemImpl item = mExpandedMenuPresenter == null ? null : 469 mExpandedMenuPresenter.mCurrentExpandedItem; 470 if (item != null) { 471 item.collapseActionView(); 472 } 473 } 474 475 public void setCustomNavigationView(View view) { 476 final boolean showCustom = (mDisplayOptions & ActionBar.DISPLAY_SHOW_CUSTOM) != 0; 477 if (showCustom) { 478 ActionBarTransition.beginDelayedTransition(this); 479 } 480 if (mCustomNavView != null && showCustom) { 481 removeView(mCustomNavView); 482 } 483 mCustomNavView = view; 484 if (mCustomNavView != null && showCustom) { 485 addView(mCustomNavView); 486 } 487 } 488 489 public CharSequence getTitle() { 490 return mTitle; 491 } 492 493 /** 494 * Set the action bar title. This will always replace or override window titles. 495 * @param title Title to set 496 * 497 * @see #setWindowTitle(CharSequence) 498 */ 499 public void setTitle(CharSequence title) { 500 mUserTitle = true; 501 setTitleImpl(title); 502 } 503 504 /** 505 * Set the window title. A window title will always be replaced or overridden by a user title. 506 * @param title Title to set 507 * 508 * @see #setTitle(CharSequence) 509 */ 510 public void setWindowTitle(CharSequence title) { 511 if (!mUserTitle) { 512 setTitleImpl(title); 513 } 514 } 515 516 private void setTitleImpl(CharSequence title) { 517 ActionBarTransition.beginDelayedTransition(this); 518 mTitle = title; 519 if (mTitleView != null) { 520 mTitleView.setText(title); 521 final boolean visible = mExpandedActionView == null && 522 (mDisplayOptions & ActionBar.DISPLAY_SHOW_TITLE) != 0 && 523 (!TextUtils.isEmpty(mTitle) || !TextUtils.isEmpty(mSubtitle)); 524 mTitleLayout.setVisibility(visible ? VISIBLE : GONE); 525 } 526 if (mLogoNavItem != null) { 527 mLogoNavItem.setTitle(title); 528 } 529 updateHomeAccessibility(mUpGoerFive.isEnabled()); 530 } 531 532 public CharSequence getSubtitle() { 533 return mSubtitle; 534 } 535 536 public void setSubtitle(CharSequence subtitle) { 537 ActionBarTransition.beginDelayedTransition(this); 538 mSubtitle = subtitle; 539 if (mSubtitleView != null) { 540 mSubtitleView.setText(subtitle); 541 mSubtitleView.setVisibility(subtitle != null ? VISIBLE : GONE); 542 final boolean visible = mExpandedActionView == null && 543 (mDisplayOptions & ActionBar.DISPLAY_SHOW_TITLE) != 0 && 544 (!TextUtils.isEmpty(mTitle) || !TextUtils.isEmpty(mSubtitle)); 545 mTitleLayout.setVisibility(visible ? VISIBLE : GONE); 546 } 547 updateHomeAccessibility(mUpGoerFive.isEnabled()); 548 } 549 550 public void setHomeButtonEnabled(boolean enable) { 551 setHomeButtonEnabled(enable, true); 552 } 553 554 private void setHomeButtonEnabled(boolean enable, boolean recordState) { 555 if (recordState) { 556 mWasHomeEnabled = enable; 557 } 558 559 if (mExpandedActionView != null) { 560 // There's an action view currently showing and we want to keep the state 561 // configured for the action view at the moment. If we needed to record the 562 // new state for later we will have done so above. 563 return; 564 } 565 566 mUpGoerFive.setEnabled(enable); 567 mUpGoerFive.setFocusable(enable); 568 // Make sure the home button has an accurate content description for accessibility. 569 updateHomeAccessibility(enable); 570 } 571 572 private void updateHomeAccessibility(boolean homeEnabled) { 573 if (!homeEnabled) { 574 mUpGoerFive.setContentDescription(null); 575 mUpGoerFive.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 576 } else { 577 mUpGoerFive.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_AUTO); 578 mUpGoerFive.setContentDescription(buildHomeContentDescription()); 579 } 580 } 581 582 /** 583 * Compose a content description for the Home/Up affordance. 584 * 585 * <p>As this encompasses the icon/logo, title and subtitle all in one, we need 586 * a description for the whole wad of stuff that can be localized properly.</p> 587 */ 588 private CharSequence buildHomeContentDescription() { 589 final CharSequence homeDesc; 590 if (mHomeDescription != null) { 591 homeDesc = mHomeDescription; 592 } else { 593 if ((mDisplayOptions & ActionBar.DISPLAY_HOME_AS_UP) != 0) { 594 homeDesc = mContext.getResources().getText(R.string.action_bar_up_description); 595 } else { 596 homeDesc = mContext.getResources().getText(R.string.action_bar_home_description); 597 } 598 } 599 600 final CharSequence title = getTitle(); 601 final CharSequence subtitle = getSubtitle(); 602 if (!TextUtils.isEmpty(title)) { 603 final String result; 604 if (!TextUtils.isEmpty(subtitle)) { 605 result = getResources().getString( 606 R.string.action_bar_home_subtitle_description_format, 607 title, subtitle, homeDesc); 608 } else { 609 result = getResources().getString(R.string.action_bar_home_description_format, 610 title, homeDesc); 611 } 612 return result; 613 } 614 return homeDesc; 615 } 616 617 public void setDisplayOptions(int options) { 618 final int flagsChanged = mDisplayOptions == -1 ? -1 : options ^ mDisplayOptions; 619 mDisplayOptions = options; 620 621 if ((flagsChanged & DISPLAY_RELAYOUT_MASK) != 0) { 622 ActionBarTransition.beginDelayedTransition(this); 623 624 if ((flagsChanged & ActionBar.DISPLAY_HOME_AS_UP) != 0) { 625 final boolean setUp = (options & ActionBar.DISPLAY_HOME_AS_UP) != 0; 626 mHomeLayout.setShowUp(setUp); 627 628 // Showing home as up implicitly enables interaction with it. 629 // In honeycomb it was always enabled, so make this transition 630 // a bit easier for developers in the common case. 631 // (It would be silly to show it as up without responding to it.) 632 if (setUp) { 633 setHomeButtonEnabled(true); 634 } 635 } 636 637 if ((flagsChanged & ActionBar.DISPLAY_USE_LOGO) != 0) { 638 final boolean logoVis = mLogo != null && (options & ActionBar.DISPLAY_USE_LOGO) != 0; 639 mHomeLayout.setIcon(logoVis ? mLogo : mIcon); 640 } 641 642 if ((flagsChanged & ActionBar.DISPLAY_SHOW_TITLE) != 0) { 643 if ((options & ActionBar.DISPLAY_SHOW_TITLE) != 0) { 644 initTitle(); 645 } else { 646 mUpGoerFive.removeView(mTitleLayout); 647 } 648 } 649 650 final boolean showHome = (options & ActionBar.DISPLAY_SHOW_HOME) != 0; 651 final boolean homeAsUp = (mDisplayOptions & ActionBar.DISPLAY_HOME_AS_UP) != 0; 652 final boolean titleUp = !showHome && homeAsUp; 653 mHomeLayout.setShowIcon(showHome); 654 655 final int homeVis = (showHome || titleUp) && mExpandedActionView == null ? 656 VISIBLE : GONE; 657 mHomeLayout.setVisibility(homeVis); 658 659 if ((flagsChanged & ActionBar.DISPLAY_SHOW_CUSTOM) != 0 && mCustomNavView != null) { 660 if ((options & ActionBar.DISPLAY_SHOW_CUSTOM) != 0) { 661 addView(mCustomNavView); 662 } else { 663 removeView(mCustomNavView); 664 } 665 } 666 667 if (mTitleLayout != null && 668 (flagsChanged & ActionBar.DISPLAY_TITLE_MULTIPLE_LINES) != 0) { 669 if ((options & ActionBar.DISPLAY_TITLE_MULTIPLE_LINES) != 0) { 670 mTitleView.setSingleLine(false); 671 mTitleView.setMaxLines(2); 672 } else { 673 mTitleView.setMaxLines(1); 674 mTitleView.setSingleLine(true); 675 } 676 } 677 678 requestLayout(); 679 } else { 680 invalidate(); 681 } 682 683 // Make sure the home button has an accurate content description for accessibility. 684 updateHomeAccessibility(mUpGoerFive.isEnabled()); 685 } 686 687 public void setIcon(Drawable icon) { 688 mIcon = icon; 689 if (icon != null && 690 ((mDisplayOptions & ActionBar.DISPLAY_USE_LOGO) == 0 || mLogo == null)) { 691 mHomeLayout.setIcon(icon); 692 } 693 if (mExpandedActionView != null) { 694 mExpandedHomeLayout.setIcon(mIcon.getConstantState().newDrawable(getResources())); 695 } 696 } 697 698 public void setIcon(int resId) { 699 setIcon(resId != 0 ? mContext.getResources().getDrawable(resId) : null); 700 } 701 702 public boolean hasIcon() { 703 return mIcon != null; 704 } 705 706 public void setLogo(Drawable logo) { 707 mLogo = logo; 708 if (logo != null && (mDisplayOptions & ActionBar.DISPLAY_USE_LOGO) != 0) { 709 mHomeLayout.setIcon(logo); 710 } 711 } 712 713 public void setLogo(int resId) { 714 setLogo(resId != 0 ? mContext.getResources().getDrawable(resId) : null); 715 } 716 717 public boolean hasLogo() { 718 return mLogo != null; 719 } 720 721 public void setNavigationMode(int mode) { 722 final int oldMode = mNavigationMode; 723 if (mode != oldMode) { 724 ActionBarTransition.beginDelayedTransition(this); 725 switch (oldMode) { 726 case ActionBar.NAVIGATION_MODE_LIST: 727 if (mListNavLayout != null) { 728 removeView(mListNavLayout); 729 } 730 break; 731 case ActionBar.NAVIGATION_MODE_TABS: 732 if (mTabScrollView != null && mIncludeTabs) { 733 removeView(mTabScrollView); 734 } 735 } 736 737 switch (mode) { 738 case ActionBar.NAVIGATION_MODE_LIST: 739 if (mSpinner == null) { 740 mSpinner = new Spinner(mContext, null, 741 com.android.internal.R.attr.actionDropDownStyle); 742 mSpinner.setId(com.android.internal.R.id.action_bar_spinner); 743 mListNavLayout = new LinearLayout(mContext, null, 744 com.android.internal.R.attr.actionBarTabBarStyle); 745 LinearLayout.LayoutParams params = new LinearLayout.LayoutParams( 746 LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT); 747 params.gravity = Gravity.CENTER; 748 mListNavLayout.addView(mSpinner, params); 749 } 750 if (mSpinner.getAdapter() != mSpinnerAdapter) { 751 mSpinner.setAdapter(mSpinnerAdapter); 752 } 753 mSpinner.setOnItemSelectedListener(mNavItemSelectedListener); 754 addView(mListNavLayout); 755 break; 756 case ActionBar.NAVIGATION_MODE_TABS: 757 if (mTabScrollView != null && mIncludeTabs) { 758 addView(mTabScrollView); 759 } 760 break; 761 } 762 mNavigationMode = mode; 763 requestLayout(); 764 } 765 } 766 767 public void setDropdownAdapter(SpinnerAdapter adapter) { 768 mSpinnerAdapter = adapter; 769 if (mSpinner != null) { 770 mSpinner.setAdapter(adapter); 771 } 772 } 773 774 public SpinnerAdapter getDropdownAdapter() { 775 return mSpinnerAdapter; 776 } 777 778 public void setDropdownSelectedPosition(int position) { 779 mSpinner.setSelection(position); 780 } 781 782 public int getDropdownSelectedPosition() { 783 return mSpinner.getSelectedItemPosition(); 784 } 785 786 public View getCustomNavigationView() { 787 return mCustomNavView; 788 } 789 790 public int getNavigationMode() { 791 return mNavigationMode; 792 } 793 794 public int getDisplayOptions() { 795 return mDisplayOptions; 796 } 797 798 @Override 799 protected ViewGroup.LayoutParams generateDefaultLayoutParams() { 800 // Used by custom nav views if they don't supply layout params. Everything else 801 // added to an ActionBarView should have them already. 802 return new ActionBar.LayoutParams(DEFAULT_CUSTOM_GRAVITY); 803 } 804 805 @Override 806 protected void onFinishInflate() { 807 super.onFinishInflate(); 808 809 mUpGoerFive.addView(mHomeLayout, 0); 810 addView(mUpGoerFive); 811 812 if (mCustomNavView != null && (mDisplayOptions & ActionBar.DISPLAY_SHOW_CUSTOM) != 0) { 813 final ViewParent parent = mCustomNavView.getParent(); 814 if (parent != this) { 815 if (parent instanceof ViewGroup) { 816 ((ViewGroup) parent).removeView(mCustomNavView); 817 } 818 addView(mCustomNavView); 819 } 820 } 821 } 822 823 private void initTitle() { 824 if (mTitleLayout == null) { 825 LayoutInflater inflater = LayoutInflater.from(getContext()); 826 mTitleLayout = (LinearLayout) inflater.inflate(R.layout.action_bar_title_item, 827 this, false); 828 mTitleView = (TextView) mTitleLayout.findViewById(R.id.action_bar_title); 829 mSubtitleView = (TextView) mTitleLayout.findViewById(R.id.action_bar_subtitle); 830 831 if (mTitleStyleRes != 0) { 832 mTitleView.setTextAppearance(mContext, mTitleStyleRes); 833 } 834 if (mTitle != null) { 835 mTitleView.setText(mTitle); 836 } 837 838 if (mSubtitleStyleRes != 0) { 839 mSubtitleView.setTextAppearance(mContext, mSubtitleStyleRes); 840 } 841 if (mSubtitle != null) { 842 mSubtitleView.setText(mSubtitle); 843 mSubtitleView.setVisibility(VISIBLE); 844 } 845 } 846 847 ActionBarTransition.beginDelayedTransition(this); 848 mUpGoerFive.addView(mTitleLayout); 849 if (mExpandedActionView != null || 850 (TextUtils.isEmpty(mTitle) && TextUtils.isEmpty(mSubtitle))) { 851 // Don't show while in expanded mode or with empty text 852 mTitleLayout.setVisibility(GONE); 853 } else { 854 mTitleLayout.setVisibility(VISIBLE); 855 } 856 } 857 858 public void setContextView(ActionBarContextView view) { 859 mContextView = view; 860 } 861 862 public void setCollapsable(boolean collapsable) { 863 mIsCollapsable = collapsable; 864 } 865 866 public boolean isCollapsed() { 867 return mIsCollapsed; 868 } 869 870 /** 871 * @return True if any characters in the title were truncated 872 */ 873 public boolean isTitleTruncated() { 874 if (mTitleView == null) { 875 return false; 876 } 877 878 final Layout titleLayout = mTitleView.getLayout(); 879 if (titleLayout == null) { 880 return false; 881 } 882 883 final int lineCount = titleLayout.getLineCount(); 884 for (int i = 0; i < lineCount; i++) { 885 if (titleLayout.getEllipsisCount(i) > 0) { 886 return true; 887 } 888 } 889 return false; 890 } 891 892 @Override 893 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 894 final int childCount = getChildCount(); 895 if (mIsCollapsable) { 896 int visibleChildren = 0; 897 for (int i = 0; i < childCount; i++) { 898 final View child = getChildAt(i); 899 if (child.getVisibility() != GONE && 900 !(child == mMenuView && mMenuView.getChildCount() == 0) && 901 child != mUpGoerFive) { 902 visibleChildren++; 903 } 904 } 905 906 final int upChildCount = mUpGoerFive.getChildCount(); 907 for (int i = 0; i < upChildCount; i++) { 908 final View child = mUpGoerFive.getChildAt(i); 909 if (child.getVisibility() != GONE) { 910 visibleChildren++; 911 } 912 } 913 914 if (visibleChildren == 0) { 915 // No size for an empty action bar when collapsable. 916 setMeasuredDimension(0, 0); 917 mIsCollapsed = true; 918 return; 919 } 920 } 921 mIsCollapsed = false; 922 923 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 924 if (widthMode != MeasureSpec.EXACTLY) { 925 throw new IllegalStateException(getClass().getSimpleName() + " can only be used " + 926 "with android:layout_width=\"match_parent\" (or fill_parent)"); 927 } 928 929 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 930 if (heightMode != MeasureSpec.AT_MOST) { 931 throw new IllegalStateException(getClass().getSimpleName() + " can only be used " + 932 "with android:layout_height=\"wrap_content\""); 933 } 934 935 int contentWidth = MeasureSpec.getSize(widthMeasureSpec); 936 937 int maxHeight = mContentHeight >= 0 ? 938 mContentHeight : MeasureSpec.getSize(heightMeasureSpec); 939 940 final int verticalPadding = getPaddingTop() + getPaddingBottom(); 941 final int paddingLeft = getPaddingLeft(); 942 final int paddingRight = getPaddingRight(); 943 final int height = maxHeight - verticalPadding; 944 final int childSpecHeight = MeasureSpec.makeMeasureSpec(height, MeasureSpec.AT_MOST); 945 final int exactHeightSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY); 946 947 int availableWidth = contentWidth - paddingLeft - paddingRight; 948 int leftOfCenter = availableWidth / 2; 949 int rightOfCenter = leftOfCenter; 950 951 final boolean showTitle = mTitleLayout != null && mTitleLayout.getVisibility() != GONE && 952 (mDisplayOptions & ActionBar.DISPLAY_SHOW_TITLE) != 0; 953 954 HomeView homeLayout = mExpandedActionView != null ? mExpandedHomeLayout : mHomeLayout; 955 956 final ViewGroup.LayoutParams homeLp = homeLayout.getLayoutParams(); 957 int homeWidthSpec; 958 if (homeLp.width < 0) { 959 homeWidthSpec = MeasureSpec.makeMeasureSpec(availableWidth, MeasureSpec.AT_MOST); 960 } else { 961 homeWidthSpec = MeasureSpec.makeMeasureSpec(homeLp.width, MeasureSpec.EXACTLY); 962 } 963 964 /* 965 * This is a little weird. 966 * We're only measuring the *home* affordance within the Up container here 967 * on purpose, because we want to give the available space to all other views before 968 * the title text. We'll remeasure the whole up container again later. 969 * We need to measure this container so we know the right offset for the up affordance 970 * no matter what. 971 */ 972 homeLayout.measure(homeWidthSpec, exactHeightSpec); 973 974 int homeWidth = 0; 975 if ((homeLayout.getVisibility() != GONE && homeLayout.getParent() == mUpGoerFive) 976 || showTitle) { 977 homeWidth = homeLayout.getMeasuredWidth(); 978 final int homeOffsetWidth = homeWidth + homeLayout.getStartOffset(); 979 availableWidth = Math.max(0, availableWidth - homeOffsetWidth); 980 leftOfCenter = Math.max(0, availableWidth - homeOffsetWidth); 981 } 982 983 if (mMenuView != null && mMenuView.getParent() == this) { 984 availableWidth = measureChildView(mMenuView, availableWidth, exactHeightSpec, 0); 985 rightOfCenter = Math.max(0, rightOfCenter - mMenuView.getMeasuredWidth()); 986 } 987 988 if (mIndeterminateProgressView != null && 989 mIndeterminateProgressView.getVisibility() != GONE) { 990 availableWidth = measureChildView(mIndeterminateProgressView, availableWidth, 991 childSpecHeight, 0); 992 rightOfCenter = Math.max(0, 993 rightOfCenter - mIndeterminateProgressView.getMeasuredWidth()); 994 } 995 996 if (mExpandedActionView == null) { 997 switch (mNavigationMode) { 998 case ActionBar.NAVIGATION_MODE_LIST: 999 if (mListNavLayout != null) { 1000 final int itemPaddingSize = showTitle ? mItemPadding * 2 : mItemPadding; 1001 availableWidth = Math.max(0, availableWidth - itemPaddingSize); 1002 leftOfCenter = Math.max(0, leftOfCenter - itemPaddingSize); 1003 mListNavLayout.measure( 1004 MeasureSpec.makeMeasureSpec(availableWidth, MeasureSpec.AT_MOST), 1005 MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY)); 1006 final int listNavWidth = mListNavLayout.getMeasuredWidth(); 1007 availableWidth = Math.max(0, availableWidth - listNavWidth); 1008 leftOfCenter = Math.max(0, leftOfCenter - listNavWidth); 1009 } 1010 break; 1011 case ActionBar.NAVIGATION_MODE_TABS: 1012 if (mTabScrollView != null) { 1013 final int itemPaddingSize = showTitle ? mItemPadding * 2 : mItemPadding; 1014 availableWidth = Math.max(0, availableWidth - itemPaddingSize); 1015 leftOfCenter = Math.max(0, leftOfCenter - itemPaddingSize); 1016 mTabScrollView.measure( 1017 MeasureSpec.makeMeasureSpec(availableWidth, MeasureSpec.AT_MOST), 1018 MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY)); 1019 final int tabWidth = mTabScrollView.getMeasuredWidth(); 1020 availableWidth = Math.max(0, availableWidth - tabWidth); 1021 leftOfCenter = Math.max(0, leftOfCenter - tabWidth); 1022 } 1023 break; 1024 } 1025 } 1026 1027 View customView = null; 1028 if (mExpandedActionView != null) { 1029 customView = mExpandedActionView; 1030 } else if ((mDisplayOptions & ActionBar.DISPLAY_SHOW_CUSTOM) != 0 && 1031 mCustomNavView != null) { 1032 customView = mCustomNavView; 1033 } 1034 1035 if (customView != null) { 1036 final ViewGroup.LayoutParams lp = generateLayoutParams(customView.getLayoutParams()); 1037 final ActionBar.LayoutParams ablp = lp instanceof ActionBar.LayoutParams ? 1038 (ActionBar.LayoutParams) lp : null; 1039 1040 int horizontalMargin = 0; 1041 int verticalMargin = 0; 1042 if (ablp != null) { 1043 horizontalMargin = ablp.leftMargin + ablp.rightMargin; 1044 verticalMargin = ablp.topMargin + ablp.bottomMargin; 1045 } 1046 1047 // If the action bar is wrapping to its content height, don't allow a custom 1048 // view to MATCH_PARENT. 1049 int customNavHeightMode; 1050 if (mContentHeight <= 0) { 1051 customNavHeightMode = MeasureSpec.AT_MOST; 1052 } else { 1053 customNavHeightMode = lp.height != LayoutParams.WRAP_CONTENT ? 1054 MeasureSpec.EXACTLY : MeasureSpec.AT_MOST; 1055 } 1056 final int customNavHeight = Math.max(0, 1057 (lp.height >= 0 ? Math.min(lp.height, height) : height) - verticalMargin); 1058 1059 final int customNavWidthMode = lp.width != LayoutParams.WRAP_CONTENT ? 1060 MeasureSpec.EXACTLY : MeasureSpec.AT_MOST; 1061 int customNavWidth = Math.max(0, 1062 (lp.width >= 0 ? Math.min(lp.width, availableWidth) : availableWidth) 1063 - horizontalMargin); 1064 final int hgrav = (ablp != null ? ablp.gravity : DEFAULT_CUSTOM_GRAVITY) & 1065 Gravity.HORIZONTAL_GRAVITY_MASK; 1066 1067 // Centering a custom view is treated specially; we try to center within the whole 1068 // action bar rather than in the available space. 1069 if (hgrav == Gravity.CENTER_HORIZONTAL && lp.width == LayoutParams.MATCH_PARENT) { 1070 customNavWidth = Math.min(leftOfCenter, rightOfCenter) * 2; 1071 } 1072 1073 customView.measure( 1074 MeasureSpec.makeMeasureSpec(customNavWidth, customNavWidthMode), 1075 MeasureSpec.makeMeasureSpec(customNavHeight, customNavHeightMode)); 1076 availableWidth -= horizontalMargin + customView.getMeasuredWidth(); 1077 } 1078 1079 /* 1080 * Measure the whole up container now, allowing for the full home+title sections. 1081 * (This will re-measure the home view.) 1082 */ 1083 availableWidth = measureChildView(mUpGoerFive, availableWidth + homeWidth, 1084 MeasureSpec.makeMeasureSpec(mContentHeight, MeasureSpec.EXACTLY), 0); 1085 if (mTitleLayout != null) { 1086 leftOfCenter = Math.max(0, leftOfCenter - mTitleLayout.getMeasuredWidth()); 1087 } 1088 1089 if (mContentHeight <= 0) { 1090 int measuredHeight = 0; 1091 for (int i = 0; i < childCount; i++) { 1092 View v = getChildAt(i); 1093 int paddedViewHeight = v.getMeasuredHeight() + verticalPadding; 1094 if (paddedViewHeight > measuredHeight) { 1095 measuredHeight = paddedViewHeight; 1096 } 1097 } 1098 setMeasuredDimension(contentWidth, measuredHeight); 1099 } else { 1100 setMeasuredDimension(contentWidth, maxHeight); 1101 } 1102 1103 if (mContextView != null) { 1104 mContextView.setContentHeight(getMeasuredHeight()); 1105 } 1106 1107 if (mProgressView != null && mProgressView.getVisibility() != GONE) { 1108 mProgressView.measure(MeasureSpec.makeMeasureSpec( 1109 contentWidth - mProgressBarPadding * 2, MeasureSpec.EXACTLY), 1110 MeasureSpec.makeMeasureSpec(getMeasuredHeight(), MeasureSpec.AT_MOST)); 1111 } 1112 } 1113 1114 @Override 1115 protected void onLayout(boolean changed, int l, int t, int r, int b) { 1116 final int contentHeight = b - t - getPaddingTop() - getPaddingBottom(); 1117 1118 if (contentHeight <= 0) { 1119 // Nothing to do if we can't see anything. 1120 return; 1121 } 1122 1123 final boolean isLayoutRtl = isLayoutRtl(); 1124 final int direction = isLayoutRtl ? 1 : -1; 1125 int menuStart = isLayoutRtl ? getPaddingLeft() : r - l - getPaddingRight(); 1126 // In LTR mode, we start from left padding and go to the right; in RTL mode, we start 1127 // from the padding right and go to the left (in reverse way) 1128 int x = isLayoutRtl ? r - l - getPaddingRight() : getPaddingLeft(); 1129 final int y = getPaddingTop(); 1130 1131 HomeView homeLayout = mExpandedActionView != null ? mExpandedHomeLayout : mHomeLayout; 1132 final boolean showTitle = mTitleLayout != null && mTitleLayout.getVisibility() != GONE && 1133 (mDisplayOptions & ActionBar.DISPLAY_SHOW_TITLE) != 0; 1134 int startOffset = 0; 1135 if (homeLayout.getParent() == mUpGoerFive) { 1136 if (homeLayout.getVisibility() != GONE) { 1137 startOffset = homeLayout.getStartOffset(); 1138 } else if (showTitle) { 1139 startOffset = homeLayout.getUpWidth(); 1140 } 1141 } 1142 1143 // Position the up container based on where the edge of the home layout should go. 1144 x += positionChild(mUpGoerFive, 1145 next(x, startOffset, isLayoutRtl), y, contentHeight, isLayoutRtl); 1146 x = next(x, startOffset, isLayoutRtl); 1147 1148 if (mExpandedActionView == null) { 1149 switch (mNavigationMode) { 1150 case ActionBar.NAVIGATION_MODE_STANDARD: 1151 break; 1152 case ActionBar.NAVIGATION_MODE_LIST: 1153 if (mListNavLayout != null) { 1154 if (showTitle) { 1155 x = next(x, mItemPadding, isLayoutRtl); 1156 } 1157 x += positionChild(mListNavLayout, x, y, contentHeight, isLayoutRtl); 1158 x = next(x, mItemPadding, isLayoutRtl); 1159 } 1160 break; 1161 case ActionBar.NAVIGATION_MODE_TABS: 1162 if (mTabScrollView != null) { 1163 if (showTitle) x = next(x, mItemPadding, isLayoutRtl); 1164 x += positionChild(mTabScrollView, x, y, contentHeight, isLayoutRtl); 1165 x = next(x, mItemPadding, isLayoutRtl); 1166 } 1167 break; 1168 } 1169 } 1170 1171 if (mMenuView != null && mMenuView.getParent() == this) { 1172 positionChild(mMenuView, menuStart, y, contentHeight, !isLayoutRtl); 1173 menuStart += direction * mMenuView.getMeasuredWidth(); 1174 } 1175 1176 if (mIndeterminateProgressView != null && 1177 mIndeterminateProgressView.getVisibility() != GONE) { 1178 positionChild(mIndeterminateProgressView, menuStart, y, contentHeight, !isLayoutRtl); 1179 menuStart += direction * mIndeterminateProgressView.getMeasuredWidth(); 1180 } 1181 1182 View customView = null; 1183 if (mExpandedActionView != null) { 1184 customView = mExpandedActionView; 1185 } else if ((mDisplayOptions & ActionBar.DISPLAY_SHOW_CUSTOM) != 0 && 1186 mCustomNavView != null) { 1187 customView = mCustomNavView; 1188 } 1189 if (customView != null) { 1190 final int layoutDirection = getLayoutDirection(); 1191 ViewGroup.LayoutParams lp = customView.getLayoutParams(); 1192 final ActionBar.LayoutParams ablp = lp instanceof ActionBar.LayoutParams ? 1193 (ActionBar.LayoutParams) lp : null; 1194 final int gravity = ablp != null ? ablp.gravity : DEFAULT_CUSTOM_GRAVITY; 1195 final int navWidth = customView.getMeasuredWidth(); 1196 1197 int topMargin = 0; 1198 int bottomMargin = 0; 1199 if (ablp != null) { 1200 x = next(x, ablp.getMarginStart(), isLayoutRtl); 1201 menuStart += direction * ablp.getMarginEnd(); 1202 topMargin = ablp.topMargin; 1203 bottomMargin = ablp.bottomMargin; 1204 } 1205 1206 int hgravity = gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK; 1207 // See if we actually have room to truly center; if not push against left or right. 1208 if (hgravity == Gravity.CENTER_HORIZONTAL) { 1209 final int centeredLeft = ((mRight - mLeft) - navWidth) / 2; 1210 if (isLayoutRtl) { 1211 final int centeredStart = centeredLeft + navWidth; 1212 final int centeredEnd = centeredLeft; 1213 if (centeredStart > x) { 1214 hgravity = Gravity.RIGHT; 1215 } else if (centeredEnd < menuStart) { 1216 hgravity = Gravity.LEFT; 1217 } 1218 } else { 1219 final int centeredStart = centeredLeft; 1220 final int centeredEnd = centeredLeft + navWidth; 1221 if (centeredStart < x) { 1222 hgravity = Gravity.LEFT; 1223 } else if (centeredEnd > menuStart) { 1224 hgravity = Gravity.RIGHT; 1225 } 1226 } 1227 } else if (gravity == Gravity.NO_GRAVITY) { 1228 hgravity = Gravity.START; 1229 } 1230 1231 int xpos = 0; 1232 switch (Gravity.getAbsoluteGravity(hgravity, layoutDirection)) { 1233 case Gravity.CENTER_HORIZONTAL: 1234 xpos = ((mRight - mLeft) - navWidth) / 2; 1235 break; 1236 case Gravity.LEFT: 1237 xpos = isLayoutRtl ? menuStart : x; 1238 break; 1239 case Gravity.RIGHT: 1240 xpos = isLayoutRtl ? x - navWidth : menuStart - navWidth; 1241 break; 1242 } 1243 1244 int vgravity = gravity & Gravity.VERTICAL_GRAVITY_MASK; 1245 1246 if (gravity == Gravity.NO_GRAVITY) { 1247 vgravity = Gravity.CENTER_VERTICAL; 1248 } 1249 1250 int ypos = 0; 1251 switch (vgravity) { 1252 case Gravity.CENTER_VERTICAL: 1253 final int paddedTop = getPaddingTop(); 1254 final int paddedBottom = mBottom - mTop - getPaddingBottom(); 1255 ypos = ((paddedBottom - paddedTop) - customView.getMeasuredHeight()) / 2; 1256 break; 1257 case Gravity.TOP: 1258 ypos = getPaddingTop() + topMargin; 1259 break; 1260 case Gravity.BOTTOM: 1261 ypos = getHeight() - getPaddingBottom() - customView.getMeasuredHeight() 1262 - bottomMargin; 1263 break; 1264 } 1265 final int customWidth = customView.getMeasuredWidth(); 1266 customView.layout(xpos, ypos, xpos + customWidth, 1267 ypos + customView.getMeasuredHeight()); 1268 x = next(x, customWidth, isLayoutRtl); 1269 } 1270 1271 if (mProgressView != null) { 1272 mProgressView.bringToFront(); 1273 final int halfProgressHeight = mProgressView.getMeasuredHeight() / 2; 1274 mProgressView.layout(mProgressBarPadding, -halfProgressHeight, 1275 mProgressBarPadding + mProgressView.getMeasuredWidth(), halfProgressHeight); 1276 } 1277 } 1278 1279 @Override 1280 public ViewGroup.LayoutParams generateLayoutParams(AttributeSet attrs) { 1281 return new ActionBar.LayoutParams(getContext(), attrs); 1282 } 1283 1284 @Override 1285 public ViewGroup.LayoutParams generateLayoutParams(ViewGroup.LayoutParams lp) { 1286 if (lp == null) { 1287 lp = generateDefaultLayoutParams(); 1288 } 1289 return lp; 1290 } 1291 1292 @Override 1293 public Parcelable onSaveInstanceState() { 1294 Parcelable superState = super.onSaveInstanceState(); 1295 SavedState state = new SavedState(superState); 1296 1297 if (mExpandedMenuPresenter != null && mExpandedMenuPresenter.mCurrentExpandedItem != null) { 1298 state.expandedMenuItemId = mExpandedMenuPresenter.mCurrentExpandedItem.getItemId(); 1299 } 1300 1301 state.isOverflowOpen = isOverflowMenuShowing(); 1302 1303 return state; 1304 } 1305 1306 @Override 1307 public void onRestoreInstanceState(Parcelable p) { 1308 SavedState state = (SavedState) p; 1309 1310 super.onRestoreInstanceState(state.getSuperState()); 1311 1312 if (state.expandedMenuItemId != 0 && 1313 mExpandedMenuPresenter != null && mOptionsMenu != null) { 1314 final MenuItem item = mOptionsMenu.findItem(state.expandedMenuItemId); 1315 if (item != null) { 1316 item.expandActionView(); 1317 } 1318 } 1319 1320 if (state.isOverflowOpen) { 1321 postShowOverflowMenu(); 1322 } 1323 } 1324 1325 public void setHomeAsUpIndicator(Drawable indicator) { 1326 mHomeLayout.setUpIndicator(indicator); 1327 } 1328 1329 public void setHomeAsUpIndicator(int resId) { 1330 mHomeLayout.setUpIndicator(resId); 1331 } 1332 1333 public void setHomeActionContentDescription(CharSequence description) { 1334 mHomeDescription = description; 1335 updateHomeAccessibility(mUpGoerFive.isEnabled()); 1336 } 1337 1338 public void setHomeActionContentDescription(int resId) { 1339 mHomeDescriptionRes = resId; 1340 mHomeDescription = resId != 0 ? getResources().getText(resId) : null; 1341 updateHomeAccessibility(mUpGoerFive.isEnabled()); 1342 } 1343 1344 static class SavedState extends BaseSavedState { 1345 int expandedMenuItemId; 1346 boolean isOverflowOpen; 1347 1348 SavedState(Parcelable superState) { 1349 super(superState); 1350 } 1351 1352 private SavedState(Parcel in) { 1353 super(in); 1354 expandedMenuItemId = in.readInt(); 1355 isOverflowOpen = in.readInt() != 0; 1356 } 1357 1358 @Override 1359 public void writeToParcel(Parcel out, int flags) { 1360 super.writeToParcel(out, flags); 1361 out.writeInt(expandedMenuItemId); 1362 out.writeInt(isOverflowOpen ? 1 : 0); 1363 } 1364 1365 public static final Parcelable.Creator<SavedState> CREATOR = 1366 new Parcelable.Creator<SavedState>() { 1367 public SavedState createFromParcel(Parcel in) { 1368 return new SavedState(in); 1369 } 1370 1371 public SavedState[] newArray(int size) { 1372 return new SavedState[size]; 1373 } 1374 }; 1375 } 1376 1377 private static class HomeView extends FrameLayout { 1378 private ImageView mUpView; 1379 private ImageView mIconView; 1380 private int mUpWidth; 1381 private int mStartOffset; 1382 private int mUpIndicatorRes; 1383 private Drawable mDefaultUpIndicator; 1384 1385 private static final long DEFAULT_TRANSITION_DURATION = 150; 1386 1387 public HomeView(Context context) { 1388 this(context, null); 1389 } 1390 1391 public HomeView(Context context, AttributeSet attrs) { 1392 super(context, attrs); 1393 LayoutTransition t = getLayoutTransition(); 1394 if (t != null) { 1395 // Set a lower duration than the default 1396 t.setDuration(DEFAULT_TRANSITION_DURATION); 1397 } 1398 } 1399 1400 public void setShowUp(boolean isUp) { 1401 mUpView.setVisibility(isUp ? VISIBLE : GONE); 1402 } 1403 1404 public void setShowIcon(boolean showIcon) { 1405 mIconView.setVisibility(showIcon ? VISIBLE : GONE); 1406 } 1407 1408 public void setIcon(Drawable icon) { 1409 mIconView.setImageDrawable(icon); 1410 } 1411 1412 public void setUpIndicator(Drawable d) { 1413 mUpView.setImageDrawable(d != null ? d : mDefaultUpIndicator); 1414 mUpIndicatorRes = 0; 1415 } 1416 1417 public void setUpIndicator(int resId) { 1418 mUpIndicatorRes = resId; 1419 mUpView.setImageDrawable(resId != 0 ? getResources().getDrawable(resId) : null); 1420 } 1421 1422 @Override 1423 protected void onConfigurationChanged(Configuration newConfig) { 1424 super.onConfigurationChanged(newConfig); 1425 if (mUpIndicatorRes != 0) { 1426 // Reload for config change 1427 setUpIndicator(mUpIndicatorRes); 1428 } 1429 } 1430 1431 @Override 1432 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 1433 onPopulateAccessibilityEvent(event); 1434 return true; 1435 } 1436 1437 @Override 1438 public void onPopulateAccessibilityEvent(AccessibilityEvent event) { 1439 super.onPopulateAccessibilityEvent(event); 1440 final CharSequence cdesc = getContentDescription(); 1441 if (!TextUtils.isEmpty(cdesc)) { 1442 event.getText().add(cdesc); 1443 } 1444 } 1445 1446 @Override 1447 public boolean dispatchHoverEvent(MotionEvent event) { 1448 // Don't allow children to hover; we want this to be treated as a single component. 1449 return onHoverEvent(event); 1450 } 1451 1452 @Override 1453 protected void onFinishInflate() { 1454 mUpView = (ImageView) findViewById(com.android.internal.R.id.up); 1455 mIconView = (ImageView) findViewById(com.android.internal.R.id.home); 1456 mDefaultUpIndicator = mUpView.getDrawable(); 1457 } 1458 1459 public int getStartOffset() { 1460 return mUpView.getVisibility() == GONE ? mStartOffset : 0; 1461 } 1462 1463 public int getUpWidth() { 1464 return mUpWidth; 1465 } 1466 1467 @Override 1468 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 1469 measureChildWithMargins(mUpView, widthMeasureSpec, 0, heightMeasureSpec, 0); 1470 final LayoutParams upLp = (LayoutParams) mUpView.getLayoutParams(); 1471 final int upMargins = upLp.leftMargin + upLp.rightMargin; 1472 mUpWidth = mUpView.getMeasuredWidth(); 1473 mStartOffset = mUpWidth + upMargins; 1474 int width = mUpView.getVisibility() == GONE ? 0 : mStartOffset; 1475 int height = upLp.topMargin + mUpView.getMeasuredHeight() + upLp.bottomMargin; 1476 1477 if (mIconView.getVisibility() != GONE) { 1478 measureChildWithMargins(mIconView, widthMeasureSpec, width, heightMeasureSpec, 0); 1479 final LayoutParams iconLp = (LayoutParams) mIconView.getLayoutParams(); 1480 width += iconLp.leftMargin + mIconView.getMeasuredWidth() + iconLp.rightMargin; 1481 height = Math.max(height, 1482 iconLp.topMargin + mIconView.getMeasuredHeight() + iconLp.bottomMargin); 1483 } else if (upMargins < 0) { 1484 // Remove the measurement effects of negative margins used for offsets 1485 width -= upMargins; 1486 } 1487 1488 final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 1489 final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 1490 final int widthSize = MeasureSpec.getSize(widthMeasureSpec); 1491 final int heightSize = MeasureSpec.getSize(heightMeasureSpec); 1492 1493 switch (widthMode) { 1494 case MeasureSpec.AT_MOST: 1495 width = Math.min(width, widthSize); 1496 break; 1497 case MeasureSpec.EXACTLY: 1498 width = widthSize; 1499 break; 1500 case MeasureSpec.UNSPECIFIED: 1501 default: 1502 break; 1503 } 1504 switch (heightMode) { 1505 case MeasureSpec.AT_MOST: 1506 height = Math.min(height, heightSize); 1507 break; 1508 case MeasureSpec.EXACTLY: 1509 height = heightSize; 1510 break; 1511 case MeasureSpec.UNSPECIFIED: 1512 default: 1513 break; 1514 } 1515 setMeasuredDimension(width, height); 1516 } 1517 1518 @Override 1519 protected void onLayout(boolean changed, int l, int t, int r, int b) { 1520 final int vCenter = (b - t) / 2; 1521 final boolean isLayoutRtl = isLayoutRtl(); 1522 final int width = getWidth(); 1523 int upOffset = 0; 1524 if (mUpView.getVisibility() != GONE) { 1525 final LayoutParams upLp = (LayoutParams) mUpView.getLayoutParams(); 1526 final int upHeight = mUpView.getMeasuredHeight(); 1527 final int upWidth = mUpView.getMeasuredWidth(); 1528 upOffset = upLp.leftMargin + upWidth + upLp.rightMargin; 1529 final int upTop = vCenter - upHeight / 2; 1530 final int upBottom = upTop + upHeight; 1531 final int upRight; 1532 final int upLeft; 1533 if (isLayoutRtl) { 1534 upRight = width; 1535 upLeft = upRight - upWidth; 1536 r -= upOffset; 1537 } else { 1538 upRight = upWidth; 1539 upLeft = 0; 1540 l += upOffset; 1541 } 1542 mUpView.layout(upLeft, upTop, upRight, upBottom); 1543 } 1544 1545 final LayoutParams iconLp = (LayoutParams) mIconView.getLayoutParams(); 1546 final int iconHeight = mIconView.getMeasuredHeight(); 1547 final int iconWidth = mIconView.getMeasuredWidth(); 1548 final int hCenter = (r - l) / 2; 1549 final int iconTop = Math.max(iconLp.topMargin, vCenter - iconHeight / 2); 1550 final int iconBottom = iconTop + iconHeight; 1551 final int iconLeft; 1552 final int iconRight; 1553 int marginStart = iconLp.getMarginStart(); 1554 final int delta = Math.max(marginStart, hCenter - iconWidth / 2); 1555 if (isLayoutRtl) { 1556 iconRight = width - upOffset - delta; 1557 iconLeft = iconRight - iconWidth; 1558 } else { 1559 iconLeft = upOffset + delta; 1560 iconRight = iconLeft + iconWidth; 1561 } 1562 mIconView.layout(iconLeft, iconTop, iconRight, iconBottom); 1563 } 1564 } 1565 1566 private class ExpandedActionViewMenuPresenter implements MenuPresenter { 1567 MenuBuilder mMenu; 1568 MenuItemImpl mCurrentExpandedItem; 1569 1570 @Override 1571 public void initForMenu(Context context, MenuBuilder menu) { 1572 // Clear the expanded action view when menus change. 1573 if (mMenu != null && mCurrentExpandedItem != null) { 1574 mMenu.collapseItemActionView(mCurrentExpandedItem); 1575 } 1576 mMenu = menu; 1577 } 1578 1579 @Override 1580 public MenuView getMenuView(ViewGroup root) { 1581 return null; 1582 } 1583 1584 @Override 1585 public void updateMenuView(boolean cleared) { 1586 // Make sure the expanded item we have is still there. 1587 if (mCurrentExpandedItem != null) { 1588 boolean found = false; 1589 1590 if (mMenu != null) { 1591 final int count = mMenu.size(); 1592 for (int i = 0; i < count; i++) { 1593 final MenuItem item = mMenu.getItem(i); 1594 if (item == mCurrentExpandedItem) { 1595 found = true; 1596 break; 1597 } 1598 } 1599 } 1600 1601 if (!found) { 1602 // The item we had expanded disappeared. Collapse. 1603 collapseItemActionView(mMenu, mCurrentExpandedItem); 1604 } 1605 } 1606 } 1607 1608 @Override 1609 public void setCallback(Callback cb) { 1610 } 1611 1612 @Override 1613 public boolean onSubMenuSelected(SubMenuBuilder subMenu) { 1614 return false; 1615 } 1616 1617 @Override 1618 public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) { 1619 } 1620 1621 @Override 1622 public boolean flagActionItems() { 1623 return false; 1624 } 1625 1626 @Override 1627 public boolean expandItemActionView(MenuBuilder menu, MenuItemImpl item) { 1628 ActionBarTransition.beginDelayedTransition(ActionBarView.this); 1629 1630 mExpandedActionView = item.getActionView(); 1631 mExpandedHomeLayout.setIcon(mIcon.getConstantState().newDrawable(getResources())); 1632 mCurrentExpandedItem = item; 1633 if (mExpandedActionView.getParent() != ActionBarView.this) { 1634 addView(mExpandedActionView); 1635 } 1636 if (mExpandedHomeLayout.getParent() != mUpGoerFive) { 1637 mUpGoerFive.addView(mExpandedHomeLayout); 1638 } 1639 mHomeLayout.setVisibility(GONE); 1640 if (mTitleLayout != null) mTitleLayout.setVisibility(GONE); 1641 if (mTabScrollView != null) mTabScrollView.setVisibility(GONE); 1642 if (mSpinner != null) mSpinner.setVisibility(GONE); 1643 if (mCustomNavView != null) mCustomNavView.setVisibility(GONE); 1644 setHomeButtonEnabled(false, false); 1645 requestLayout(); 1646 item.setActionViewExpanded(true); 1647 1648 if (mExpandedActionView instanceof CollapsibleActionView) { 1649 ((CollapsibleActionView) mExpandedActionView).onActionViewExpanded(); 1650 } 1651 1652 return true; 1653 } 1654 1655 @Override 1656 public boolean collapseItemActionView(MenuBuilder menu, MenuItemImpl item) { 1657 ActionBarTransition.beginDelayedTransition(ActionBarView.this); 1658 1659 // Do this before detaching the actionview from the hierarchy, in case 1660 // it needs to dismiss the soft keyboard, etc. 1661 if (mExpandedActionView instanceof CollapsibleActionView) { 1662 ((CollapsibleActionView) mExpandedActionView).onActionViewCollapsed(); 1663 } 1664 1665 removeView(mExpandedActionView); 1666 mUpGoerFive.removeView(mExpandedHomeLayout); 1667 mExpandedActionView = null; 1668 if ((mDisplayOptions & ActionBar.DISPLAY_SHOW_HOME) != 0) { 1669 mHomeLayout.setVisibility(VISIBLE); 1670 } 1671 if ((mDisplayOptions & ActionBar.DISPLAY_SHOW_TITLE) != 0) { 1672 if (mTitleLayout == null) { 1673 initTitle(); 1674 } else { 1675 mTitleLayout.setVisibility(VISIBLE); 1676 } 1677 } 1678 if (mTabScrollView != null) mTabScrollView.setVisibility(VISIBLE); 1679 if (mSpinner != null) mSpinner.setVisibility(VISIBLE); 1680 if (mCustomNavView != null) mCustomNavView.setVisibility(VISIBLE); 1681 1682 mExpandedHomeLayout.setIcon(null); 1683 mCurrentExpandedItem = null; 1684 setHomeButtonEnabled(mWasHomeEnabled); // Set by expandItemActionView above 1685 requestLayout(); 1686 item.setActionViewExpanded(false); 1687 1688 return true; 1689 } 1690 1691 @Override 1692 public int getId() { 1693 return 0; 1694 } 1695 1696 @Override 1697 public Parcelable onSaveInstanceState() { 1698 return null; 1699 } 1700 1701 @Override 1702 public void onRestoreInstanceState(Parcelable state) { 1703 } 1704 } 1705} 1706