AdapterViewAnimator.java revision a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20
13db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen/* 23db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Copyright (C) 2010 The Android Open Source Project 33db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 43db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Licensed under the Apache License, Version 2.0 (the "License"); 53db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * you may not use this file except in compliance with the License. 63db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * You may obtain a copy of the License at 73db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 83db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * http://www.apache.org/licenses/LICENSE-2.0 93db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 103db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Unless required by applicable law or agreed to in writing, software 113db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * distributed under the License is distributed on an "AS IS" BASIS, 123db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 133db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * See the License for the specific language governing permissions and 143db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * limitations under the License. 153db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 163db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 173db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenpackage android.widget; 183db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 1944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport java.util.ArrayList; 201b065cd1401253f999caa5d0ac12909407cef00eAdam Cohenimport java.util.HashMap; 2144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 22ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohenimport android.animation.AnimatorInflater; 23a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport android.animation.ObjectAnimator; 243db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.content.Context; 253db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.content.Intent; 263db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.content.res.TypedArray; 27a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohenimport android.graphics.Rect; 283db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.os.Handler; 293db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.os.Looper; 30b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohenimport android.os.Parcel; 31b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohenimport android.os.Parcelable; 323db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.util.AttributeSet; 33a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohenimport android.view.MotionEvent; 343db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.view.View; 35a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohenimport android.view.ViewConfiguration; 3644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport android.view.ViewGroup; 373db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 383db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen/** 393db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Base class for a {@link AdapterView} that will perform animations 403db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * when switching between its views. 413db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 423db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @attr ref android.R.styleable#AdapterViewAnimator_inAnimation 433db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @attr ref android.R.styleable#AdapterViewAnimator_outAnimation 443db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @attr ref android.R.styleable#AdapterViewAnimator_animateFirstView 451b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen * @attr ref android.R.styleable#AdapterViewAnimator_loopViews 463db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 4744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenpublic abstract class AdapterViewAnimator extends AdapterView<Adapter> 48dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen implements RemoteViewsAdapter.RemoteAdapterConnectionCallback { 493db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen private static final String TAG = "RemoteViewAnimator"; 503db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 5144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 5244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * The index of the current child, which appears anywhere from the beginning 5344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * to the end of the current set of children, as specified by {@link #mActiveOffset} 5444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 553db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen int mWhichChild = 0; 5644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 5744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 5844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Whether or not the first view(s) should be animated in 5944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 603db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen boolean mAnimateFirstTime = true; 613db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 6244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 6344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Represents where the in the current window of 6444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * views the current <code>mDisplayedChild</code> sits 6544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 6644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int mActiveOffset = 0; 6744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 6844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 6944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * The number of views that the {@link AdapterViewAnimator} keeps as children at any 7044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * given time (not counting views that are pending removal, see {@link #mPreviousViews}). 7144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 7296d8d56302da81b24333b204e6d7f15064538036Adam Cohen int mMaxNumActiveViews = 1; 7344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 7444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 751b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen * Map of the children of the {@link AdapterViewAnimator}. 7644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 7796d8d56302da81b24333b204e6d7f15064538036Adam Cohen HashMap<Integer, ViewAndIndex> mViewsMap = new HashMap<Integer, ViewAndIndex>(); 7844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 7944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 8044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * List of views pending removal from the {@link AdapterViewAnimator} 8144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 821b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen ArrayList<Integer> mPreviousViews; 8344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 8444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 8544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * The index, relative to the adapter, of the beginning of the window of views 8644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 8744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int mCurrentWindowStart = 0; 8844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 8944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 9044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * The index, relative to the adapter, of the end of the window of views 9144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 9244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int mCurrentWindowEnd = -1; 9344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 9444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 9544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * The same as {@link #mCurrentWindowStart}, except when the we have bounded 9644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * {@link #mCurrentWindowStart} to be non-negative 9744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 9844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int mCurrentWindowStartUnbounded = 0; 9944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 10044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 10144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Handler to post events to the main thread 10244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 10344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen Handler mMainQueue; 10444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 10544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 10644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Listens for data changes from the adapter 10744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 1083db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen AdapterDataSetObserver mDataSetObserver; 1093db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 11044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 11144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * The {@link Adapter} for this {@link AdapterViewAnimator} 11244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 11344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen Adapter mAdapter; 11444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 11544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 11644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * The {@link RemoteViewsAdapter} for this {@link AdapterViewAnimator} 11744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 11844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen RemoteViewsAdapter mRemoteViewsAdapter; 11944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 12044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 12144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Specifies whether this is the first time the animator is showing views 12244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 12344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen boolean mFirstTime = true; 1243db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 12544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 126b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen * Specifies if the animator should wrap from 0 to the end and vice versa 127b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen * or have hard boundaries at the beginning and end 128b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen */ 1291b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen boolean mLoopViews = true; 130b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 131b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen /** 132839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen * The width and height of some child, used as a size reference in-case our 133839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen * dimensions are unspecified by the parent. 134839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen */ 135839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int mReferenceChildWidth = -1; 136839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int mReferenceChildHeight = -1; 137839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 138839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen /** 139ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen * In and out animations. 14044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 1412794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ObjectAnimator mInAnimation; 1422794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ObjectAnimator mOutAnimation; 143ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen 144a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen /** 145a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen * Current touch state. 146a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen */ 147a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen private int mTouchMode = TOUCH_MODE_NONE; 148a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen 149a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen /** 150a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen * Private touch states. 151a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen */ 152a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen static final int TOUCH_MODE_NONE = 0; 153a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen static final int TOUCH_MODE_DOWN_IN_CURRENT_VIEW = 1; 154a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen static final int TOUCH_MODE_HANDLED = 2; 155a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen 156a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen private Runnable mPendingCheckForTap; 157a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen 158ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen private static final int DEFAULT_ANIMATION_DURATION = 200; 159ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen 1603db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public AdapterViewAnimator(Context context) { 1613db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen super(context); 1625b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy initViewAnimator(); 1633db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 1643db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 1653db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public AdapterViewAnimator(Context context, AttributeSet attrs) { 1663db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen super(context, attrs); 1673db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 16844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen TypedArray a = context.obtainStyledAttributes(attrs, 1691b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen com.android.internal.R.styleable.AdapterViewAnimator); 17044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int resource = a.getResourceId( 1711b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen com.android.internal.R.styleable.AdapterViewAnimator_inAnimation, 0); 1723db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (resource > 0) { 1733db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setInAnimation(context, resource); 174ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen } else { 175ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen setInAnimation(getDefaultInAnimation()); 1763db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 1773db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 1781b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen resource = a.getResourceId(com.android.internal.R.styleable.AdapterViewAnimator_outAnimation, 0); 1793db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (resource > 0) { 1803db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setOutAnimation(context, resource); 181ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen } else { 182ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen setOutAnimation(getDefaultOutAnimation()); 1833db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 1843db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 18544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen boolean flag = a.getBoolean( 1861b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen com.android.internal.R.styleable.AdapterViewAnimator_animateFirstView, true); 1873db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setAnimateFirstView(flag); 1883db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 1891b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mLoopViews = a.getBoolean( 1901b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen com.android.internal.R.styleable.AdapterViewAnimator_loopViews, false); 1911b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen 1923db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen a.recycle(); 1933db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 1945b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy initViewAnimator(); 1953db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 1963db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 1973db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 1983db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Initialize this {@link AdapterViewAnimator} 1993db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 2005b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy private void initViewAnimator() { 2013db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mMainQueue = new Handler(Looper.myLooper()); 2021b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mPreviousViews = new ArrayList<Integer>(); 20344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 20444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 20596d8d56302da81b24333b204e6d7f15064538036Adam Cohen class ViewAndIndex { 2061b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen ViewAndIndex(View v, int i) { 2071b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen view = v; 2081b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen index = i; 2091b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } 2101b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen View view; 2111b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen int index; 2121b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } 2131b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen 21444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 21544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * This method is used by subclasses to configure the animator to display the 21644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * desired number of views, and specify the offset 21744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * 21844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param numVisibleViews The number of views the animator keeps in the {@link ViewGroup} 2195b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy * @param activeOffset This parameter specifies where the current index ({@link #mWhichChild}) 22044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * sits within the window. For example if activeOffset is 1, and numVisibleViews is 3, 2215b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy * and {@link #setDisplayedChild(int)} is called with 10, then the effective window will 2225b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy * be the indexes 9, 10, and 11. In the same example, if activeOffset were 0, then the 22344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * window would instead contain indexes 10, 11 and 12. 224b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen * @param shouldLoop If the animator is show view 0, and setPrevious() is called, do we 225b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen * we loop back to the end, or do we do nothing 22644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 2271b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen void configureViewAnimator(int numVisibleViews, int activeOffset) { 22844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (activeOffset > numVisibleViews - 1) { 22944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Throw an exception here. 23044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 23196d8d56302da81b24333b204e6d7f15064538036Adam Cohen mMaxNumActiveViews = numVisibleViews; 23244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mActiveOffset = activeOffset; 23344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mPreviousViews.clear(); 2341b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mViewsMap.clear(); 23544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen removeAllViewsInLayout(); 23644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mCurrentWindowStart = 0; 23744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mCurrentWindowEnd = -1; 23844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 23944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 24044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 24144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * This class should be overridden by subclasses to customize view transitions within 24244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * the set of visible views 24344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * 24444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param fromIndex The relative index within the window that the view was in, -1 if it wasn't 24544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * in the window 24644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param toIndex The relative index within the window that the view is going to, -1 if it is 24744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * being removed 24844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param view The view that is being animated 24944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 25044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen void animateViewForTransition(int fromIndex, int toIndex, View view) { 25144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (fromIndex == -1) { 252ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen mInAnimation.setTarget(view); 253ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen mInAnimation.start(); 25444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } else if (toIndex == -1) { 255ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen mOutAnimation.setTarget(view); 256ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen mOutAnimation.start(); 25744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 2583db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 2593db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 2602794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ObjectAnimator getDefaultInAnimation() { 2612794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ObjectAnimator anim = ObjectAnimator.ofFloat(null, "alpha", 0.0f, 1.0f); 2622794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setDuration(DEFAULT_ANIMATION_DURATION); 2632794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return anim; 264ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen } 265ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen 2662794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ObjectAnimator getDefaultOutAnimation() { 2672794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ObjectAnimator anim = ObjectAnimator.ofFloat(null, "alpha", 1.0f, 0.0f); 2682794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setDuration(DEFAULT_ANIMATION_DURATION); 2692794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return anim; 270ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen } 271ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen 2723db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 2733db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Sets which child view will be displayed. 2743db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 2753db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param whichChild the index of the child view to display 2763db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 2773db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void setDisplayedChild(int whichChild) { 2783db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (mAdapter != null) { 2793db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mWhichChild = whichChild; 28096d8d56302da81b24333b204e6d7f15064538036Adam Cohen if (whichChild >= getWindowSize()) { 28196d8d56302da81b24333b204e6d7f15064538036Adam Cohen mWhichChild = mLoopViews ? 0 : getWindowSize() - 1; 2823db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } else if (whichChild < 0) { 28396d8d56302da81b24333b204e6d7f15064538036Adam Cohen mWhichChild = mLoopViews ? getWindowSize() - 1 : 0; 2843db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 2853db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 2863db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen boolean hasFocus = getFocusedChild() != null; 2873db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen // This will clear old focus if we had it 2883db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen showOnly(mWhichChild); 2893db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (hasFocus) { 2903db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen // Try to retake focus if we had it 2913db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen requestFocus(FOCUS_FORWARD); 2923db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 2933db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 2943db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 2953db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 2963db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 29744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * To be overridden by subclasses. This method applies a view / index specific 29844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * transform to the child view. 29944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * 30044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param child 30144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param relativeIndex 30244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 30344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen void applyTransformForChildAtIndex(View child, int relativeIndex) { 30444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 30544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 30644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 3073db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Returns the index of the currently displayed child view. 3083db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 3093db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public int getDisplayedChild() { 3103db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen return mWhichChild; 3113db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 3123db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 3133db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 3143db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Manually shows the next child. 3153db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 3163db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void showNext() { 3173db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setDisplayedChild(mWhichChild + 1); 3183db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 3193db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 3203db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 3213db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Manually shows the previous child. 3223db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 3233db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void showPrevious() { 3243db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setDisplayedChild(mWhichChild - 1); 3253db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 3263db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 3273db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 3283db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Shows only the specified child. The other displays Views exit the screen, 3293db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * optionally with the with the {@link #getOutAnimation() out animation} and 3303db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * the specified child enters the screen, optionally with the 3313db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * {@link #getInAnimation() in animation}. 3323db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 3333db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param childIndex The index of the child to be shown. 3343db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param animate Whether or not to use the in and out animations, defaults 3353db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * to true. 3363db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 3373db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen void showOnly(int childIndex, boolean animate) { 3383db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen showOnly(childIndex, animate, false); 3393db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 3403db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 34196d8d56302da81b24333b204e6d7f15064538036Adam Cohen int modulo(int pos, int size) { 3423042944c6ec68210ba1746540b53789e70d15ef4Adam Cohen if (size > 0) { 3433042944c6ec68210ba1746540b53789e70d15ef4Adam Cohen return (size + (pos % size)) % size; 3443042944c6ec68210ba1746540b53789e70d15ef4Adam Cohen } else { 3453042944c6ec68210ba1746540b53789e70d15ef4Adam Cohen return 0; 3463042944c6ec68210ba1746540b53789e70d15ef4Adam Cohen } 3473db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 3483db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 34944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 35044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Get the view at this index relative to the current window's start 35144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * 35244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param relativeIndex Position relative to the current window's start 35344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @return View at this index, null if the index is outside the bounds 35444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 35544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen View getViewAtRelativeIndex(int relativeIndex) { 35696d8d56302da81b24333b204e6d7f15064538036Adam Cohen if (relativeIndex >= 0 && relativeIndex <= getNumActiveViews() - 1 && mAdapter != null) { 35796d8d56302da81b24333b204e6d7f15064538036Adam Cohen int i = modulo(mCurrentWindowStartUnbounded + relativeIndex, getWindowSize()); 3586f279627cfa3286e6901a8dc2ed8361576ce226dAdam Cohen if (mViewsMap.get(i) != null) { 3596f279627cfa3286e6901a8dc2ed8361576ce226dAdam Cohen return mViewsMap.get(i).view; 3606f279627cfa3286e6901a8dc2ed8361576ce226dAdam Cohen } 36144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 36244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return null; 36344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 3643db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 36596d8d56302da81b24333b204e6d7f15064538036Adam Cohen int getNumActiveViews() { 36696d8d56302da81b24333b204e6d7f15064538036Adam Cohen if (mAdapter != null) { 36796d8d56302da81b24333b204e6d7f15064538036Adam Cohen return Math.min(mAdapter.getCount() + 1, mMaxNumActiveViews); 36896d8d56302da81b24333b204e6d7f15064538036Adam Cohen } else { 36996d8d56302da81b24333b204e6d7f15064538036Adam Cohen return mMaxNumActiveViews; 37096d8d56302da81b24333b204e6d7f15064538036Adam Cohen } 37196d8d56302da81b24333b204e6d7f15064538036Adam Cohen } 37296d8d56302da81b24333b204e6d7f15064538036Adam Cohen 37396d8d56302da81b24333b204e6d7f15064538036Adam Cohen int getWindowSize() { 37496d8d56302da81b24333b204e6d7f15064538036Adam Cohen if (mAdapter != null) { 37596d8d56302da81b24333b204e6d7f15064538036Adam Cohen int adapterCount = mAdapter.getCount(); 37696d8d56302da81b24333b204e6d7f15064538036Adam Cohen if (adapterCount <= getNumActiveViews() && mLoopViews) { 37796d8d56302da81b24333b204e6d7f15064538036Adam Cohen return adapterCount*mMaxNumActiveViews; 37896d8d56302da81b24333b204e6d7f15064538036Adam Cohen } else { 37996d8d56302da81b24333b204e6d7f15064538036Adam Cohen return adapterCount; 38096d8d56302da81b24333b204e6d7f15064538036Adam Cohen } 38196d8d56302da81b24333b204e6d7f15064538036Adam Cohen } else { 38296d8d56302da81b24333b204e6d7f15064538036Adam Cohen return 0; 38396d8d56302da81b24333b204e6d7f15064538036Adam Cohen } 38496d8d56302da81b24333b204e6d7f15064538036Adam Cohen } 38596d8d56302da81b24333b204e6d7f15064538036Adam Cohen 3869b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen LayoutParams createOrReuseLayoutParams(View v) { 3875b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy final ViewGroup.LayoutParams currentLp = v.getLayoutParams(); 3889b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (currentLp instanceof ViewGroup.LayoutParams) { 389b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen LayoutParams lp = (LayoutParams) currentLp; 390b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen return lp; 39144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 3929b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen return new ViewGroup.LayoutParams(0, 0); 39344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 3943db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 3956364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung void refreshChildren() { 396a9238c89a43500ed0bcdeaee182be08ff991c627Adam Cohen if (mAdapter == null) return; 397bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen for (int i = mCurrentWindowStart; i <= mCurrentWindowEnd; i++) { 398a9238c89a43500ed0bcdeaee182be08ff991c627Adam Cohen int index = modulo(i, getWindowSize()); 399bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen 400a9238c89a43500ed0bcdeaee182be08ff991c627Adam Cohen int adapterCount = mAdapter.getCount(); 401bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen // get the fresh child from the adapter 402a9238c89a43500ed0bcdeaee182be08ff991c627Adam Cohen View updatedChild = mAdapter.getView(modulo(i, adapterCount), null, this); 403bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen 4041b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (mViewsMap.containsKey(index)) { 4051b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen FrameLayout fl = (FrameLayout) mViewsMap.get(index).view; 406bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen // flush out the old child 407bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen fl.removeAllViewsInLayout(); 408bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen // add the new child to the frame, if it exists 409bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen if (updatedChild != null) { 410bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen fl.addView(updatedChild); 411bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen } 412bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen } 413bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen } 414bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen } 415bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen 416dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen /** 417dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen * This method can be overridden so that subclasses can provide a custom frame in which their 418dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen * children can live. For example, StackView adds padding to its childrens' frames so as to 419dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen * accomodate for the highlight effect. 420dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen * 421dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen * @return The FrameLayout into which children can be placed. 422dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen */ 423dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen FrameLayout getFrameForChild() { 424dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen return new FrameLayout(mContext); 425dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen } 426dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen 42744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen void showOnly(int childIndex, boolean animate, boolean onLayout) { 42844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (mAdapter == null) return; 4293042944c6ec68210ba1746540b53789e70d15ef4Adam Cohen final int adapterCount = mAdapter.getCount(); 4303042944c6ec68210ba1746540b53789e70d15ef4Adam Cohen if (adapterCount == 0) return; 4313db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 43244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen for (int i = 0; i < mPreviousViews.size(); i++) { 4331b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen View viewToRemove = mViewsMap.get(mPreviousViews.get(i)).view; 4341b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mViewsMap.remove(mPreviousViews.get(i)); 43544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen viewToRemove.clearAnimation(); 4363d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (viewToRemove instanceof ViewGroup) { 4373d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen ViewGroup vg = (ViewGroup) viewToRemove; 4383d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen vg.removeAllViewsInLayout(); 4393d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 44044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // applyTransformForChildAtIndex here just allows for any cleanup 44144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // associated with this view that may need to be done by a subclass 44244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen applyTransformForChildAtIndex(viewToRemove, -1); 4433d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 44444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen removeViewInLayout(viewToRemove); 44544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 44644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mPreviousViews.clear(); 44744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int newWindowStartUnbounded = childIndex - mActiveOffset; 44896d8d56302da81b24333b204e6d7f15064538036Adam Cohen int newWindowEndUnbounded = newWindowStartUnbounded + getNumActiveViews() - 1; 44944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int newWindowStart = Math.max(0, newWindowStartUnbounded); 4501b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen int newWindowEnd = Math.min(adapterCount - 1, newWindowEndUnbounded); 45144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 4521b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (mLoopViews) { 4531b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen newWindowStart = newWindowStartUnbounded; 4541b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen newWindowEnd = newWindowEndUnbounded; 4551b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } 45696d8d56302da81b24333b204e6d7f15064538036Adam Cohen int rangeStart = modulo(newWindowStart, getWindowSize()); 45796d8d56302da81b24333b204e6d7f15064538036Adam Cohen int rangeEnd = modulo(newWindowEnd, getWindowSize()); 4581b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen 4591b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen boolean wrap = false; 4601b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (rangeStart > rangeEnd) { 4611b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen wrap = true; 4621b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } 4631b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen 4641b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen // This section clears out any items that are in our active views list 46544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // but are outside the effective bounds of our window (this is becomes an issue 46644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // at the extremities of the list, eg. where newWindowStartUnbounded < 0 or 46744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // newWindowEndUnbounded > mAdapter.getCount() - 1 4681b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen for (Integer index : mViewsMap.keySet()) { 4691b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen boolean remove = false; 4701b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (!wrap && (index < rangeStart || index > rangeEnd)) { 4711b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen remove = true; 4721b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } else if (wrap && (index > rangeEnd && index < rangeStart)) { 4731b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen remove = true; 4741b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } 4751b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen 4761b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (remove) { 4771b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen View previousView = mViewsMap.get(index).view; 4781b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen int oldRelativeIndex = mViewsMap.get(index).index; 4791b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen 4801b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mPreviousViews.add(index); 4811b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen animateViewForTransition(oldRelativeIndex, -1, previousView); 4823db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 48344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 4843db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 48544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // If the window has changed 48696d8d56302da81b24333b204e6d7f15064538036Adam Cohen if (!(newWindowStart == mCurrentWindowStart && newWindowEnd == mCurrentWindowEnd && 48796d8d56302da81b24333b204e6d7f15064538036Adam Cohen newWindowStartUnbounded == mCurrentWindowStartUnbounded)) { 48844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Run through the indices in the new range 48944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen for (int i = newWindowStart; i <= newWindowEnd; i++) { 49044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 49196d8d56302da81b24333b204e6d7f15064538036Adam Cohen int index = modulo(i, getWindowSize()); 4921b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen int oldRelativeIndex; 4931b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (mViewsMap.containsKey(index)) { 4941b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen oldRelativeIndex = mViewsMap.get(index).index; 4951b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } else { 4961b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen oldRelativeIndex = -1; 4971b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } 49844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int newRelativeIndex = i - newWindowStartUnbounded; 49944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 50044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // If this item is in the current window, great, we just need to apply 50144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // the transform for it's new relative position in the window, and animate 50244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // between it's current and new relative positions 5031b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen boolean inOldRange = mViewsMap.containsKey(index) && !mPreviousViews.contains(index); 5041b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen 5051b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (inOldRange) { 5061b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen View view = mViewsMap.get(index).view; 5071b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mViewsMap.get(index).index = newRelativeIndex; 50844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen applyTransformForChildAtIndex(view, newRelativeIndex); 50944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen animateViewForTransition(oldRelativeIndex, newRelativeIndex, view); 51044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 5111b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen // Otherwise this view is new to the window 51244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } else { 5131b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen // Get the new view from the adapter, add it and apply any transform / animation 5141b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen View newView = mAdapter.getView(modulo(i, adapterCount), null, this); 515bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen 516bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen // We wrap the new view in a FrameLayout so as to respect the contract 517bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen // with the adapter, that is, that we don't modify this view directly 518dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen FrameLayout fl = getFrameForChild(); 519bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen 520bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen // If the view from the adapter is null, we still keep an empty frame in place 52144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (newView != null) { 522bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen fl.addView(newView); 52344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 5241b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mViewsMap.put(index, new ViewAndIndex(fl, newRelativeIndex)); 525bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen addChild(fl); 526bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen applyTransformForChildAtIndex(fl, newRelativeIndex); 527bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen animateViewForTransition(-1, newRelativeIndex, fl); 5283db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 5291b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mViewsMap.get(index).view.bringToFront(); 5303db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 53144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mCurrentWindowStart = newWindowStart; 53244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mCurrentWindowEnd = newWindowEnd; 53344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mCurrentWindowStartUnbounded = newWindowStartUnbounded; 53444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 53544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 53644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mFirstTime = false; 53744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (!onLayout) { 53844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen requestLayout(); 53944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen invalidate(); 54044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } else { 54144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // If the Adapter tries to layout the current view when we get it using getView 54244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // above the layout will end up being ignored since we are currently laying out, so 54344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // we post a delayed requestLayout and invalidate 54444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mMainQueue.post(new Runnable() { 54544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen public void run() { 54644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen requestLayout(); 54744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen invalidate(); 54844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 54944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen }); 5503db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 5513db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 5523db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 553839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private void addChild(View child) { 554839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen addViewInLayout(child, -1, createOrReuseLayoutParams(child)); 555839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 556839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // This code is used to obtain a reference width and height of a child in case we need 557839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // to decide our own size. TODO: Do we want to update the size of the child that we're 558839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // using for reference size? If so, when? 559839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mReferenceChildWidth == -1 || mReferenceChildHeight == -1) { 560839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int measureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 561839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen child.measure(measureSpec, measureSpec); 562839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mReferenceChildWidth = child.getMeasuredWidth(); 563839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mReferenceChildHeight = child.getMeasuredHeight(); 564839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 565839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 566839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 567a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen void showTapFeedback(View v) { 568a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen v.setPressed(true); 569a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 570a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen 571a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen void hideTapFeedback(View v) { 572a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen v.setPressed(false); 573a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 574a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen 575a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen void cancelHandleClick() { 576a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen View v = getCurrentView(); 577a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen if (v != null) { 578a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen hideTapFeedback(v); 579a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 580a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen mTouchMode = TOUCH_MODE_NONE; 581a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 582a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen 583a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen final class CheckForTap implements Runnable { 584a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen public void run() { 585a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen if (mTouchMode == TOUCH_MODE_DOWN_IN_CURRENT_VIEW) { 586a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen View v = getCurrentView(); 587a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen showTapFeedback(v); 588a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 589a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 590a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 591a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen 592a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen @Override 593a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen public boolean onTouchEvent(MotionEvent ev) { 594a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen int action = ev.getAction(); 595a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen boolean handled = false; 596a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen switch (action) { 597a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen case MotionEvent.ACTION_DOWN: { 598a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen View v = getCurrentView(); 599a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen if (v != null) { 600a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen if (isTransformedTouchPointInView(ev.getX(), ev.getY(), v, null)) { 601a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen if (mPendingCheckForTap == null) { 602a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen mPendingCheckForTap = new CheckForTap(); 603a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 604a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen mTouchMode = TOUCH_MODE_DOWN_IN_CURRENT_VIEW; 605a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen postDelayed(mPendingCheckForTap, ViewConfiguration.getTapTimeout()); 606a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 607a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 608a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen break; 609a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 610a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen case MotionEvent.ACTION_MOVE: break; 611a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen case MotionEvent.ACTION_POINTER_UP: break; 612a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen case MotionEvent.ACTION_UP: { 613a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen if (mTouchMode == TOUCH_MODE_DOWN_IN_CURRENT_VIEW) { 614a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen final View v = getCurrentView(); 615a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen if (v != null) { 616a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen if (isTransformedTouchPointInView(ev.getX(), ev.getY(), v, null)) { 617a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen final Handler handler = getHandler(); 618a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen if (handler != null) { 619a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen handler.removeCallbacks(mPendingCheckForTap); 620a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 621a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen showTapFeedback(v); 622a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen postDelayed(new Runnable() { 623a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen public void run() { 624a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen hideTapFeedback(v); 625a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen post(new Runnable() { 626a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen public void run() { 627a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen performItemClick(v, 0, 0); 628a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 629a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen }); 630a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 631a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen }, ViewConfiguration.getPressedStateDuration()); 632a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen handled = true; 633a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 634a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 635a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 636a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen mTouchMode = TOUCH_MODE_NONE; 637a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen break; 638a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 639a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen case MotionEvent.ACTION_CANCEL: { 640a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen View v = getCurrentView(); 641a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen if (v != null) { 642a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen hideTapFeedback(v); 643a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 644a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen mTouchMode = TOUCH_MODE_NONE; 645a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 646a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 647a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen return handled; 648a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 649a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen 650839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private void measureChildren() { 651839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int count = getChildCount(); 652839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int childWidth = mMeasuredWidth - mPaddingLeft - mPaddingRight; 653839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int childHeight = mMeasuredHeight - mPaddingTop - mPaddingBottom; 654839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 655839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen for (int i = 0; i < count; i++) { 656839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final View child = getChildAt(i); 657839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen child.measure(MeasureSpec.makeMeasureSpec(childWidth, MeasureSpec.EXACTLY), 658839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen MeasureSpec.makeMeasureSpec(childHeight, MeasureSpec.EXACTLY)); 659839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 660839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 661839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 662839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen @Override 663839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 664839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int widthSpecSize = MeasureSpec.getSize(widthMeasureSpec); 665839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int heightSpecSize = MeasureSpec.getSize(heightMeasureSpec); 666839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int widthSpecMode = MeasureSpec.getMode(widthMeasureSpec); 667839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int heightSpecMode = MeasureSpec.getMode(heightMeasureSpec); 668839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 669839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen boolean haveChildRefSize = (mReferenceChildWidth != -1 && mReferenceChildHeight != -1); 670839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 671839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // We need to deal with the case where our parent hasn't told us how 672839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // big we should be. In this case we try to use the desired size of the first 673839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // child added. 674839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (heightSpecMode == MeasureSpec.UNSPECIFIED) { 675839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen heightSpecSize = haveChildRefSize ? mReferenceChildHeight + mPaddingTop + 676839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingBottom : 0; 677839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else if (heightSpecMode == MeasureSpec.AT_MOST) { 678839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen heightSpecSize = haveChildRefSize ? Math.min(mReferenceChildHeight + mPaddingTop + 679839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingBottom, heightSpecSize) : 0; 680839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 681839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 682839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (widthSpecMode == MeasureSpec.UNSPECIFIED) { 683839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen widthSpecSize = haveChildRefSize ? mReferenceChildWidth + mPaddingLeft + 684839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingRight : 0; 685839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else if (heightSpecMode == MeasureSpec.AT_MOST) { 686839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen widthSpecSize = haveChildRefSize ? Math.min(mReferenceChildWidth + mPaddingLeft + 687839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingRight, widthSpecSize) : 0; 688839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 689839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 690839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen setMeasuredDimension(widthSpecSize, heightSpecSize); 691839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen measureChildren(); 692839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 693839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 6943db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen @Override 6953db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 6963db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen boolean dataChanged = mDataChanged; 6973db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (dataChanged) { 6983db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen handleDataChanged(); 6993db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 7003db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen // if the data changes, mWhichChild might be out of the bounds of the adapter 7013db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen // in this case, we reset mWhichChild to the beginning 702bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen if (mWhichChild >= mAdapter.getCount()) { 7033db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mWhichChild = 0; 7043db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 705bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen showOnly(mWhichChild, true, true); 706bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen } 707bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen refreshChildren(); 7083db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 7093db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 7103db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen final int childCount = getChildCount(); 7113db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen for (int i = 0; i < childCount; i++) { 7123db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen final View child = getChildAt(i); 7133db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 7143db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen int childRight = mPaddingLeft + child.getMeasuredWidth(); 7153db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen int childBottom = mPaddingTop + child.getMeasuredHeight(); 7163db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 717839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen child.layout(mPaddingLeft, mPaddingTop, childRight, childBottom); 7183db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 7193db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mDataChanged = false; 7203db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 7213db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 722b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen static class SavedState extends BaseSavedState { 723b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen int whichChild; 724b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 725b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen /** 726b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen * Constructor called from {@link AdapterViewAnimator#onSaveInstanceState()} 727b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen */ 728b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen SavedState(Parcelable superState, int whichChild) { 729b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen super(superState); 730b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen this.whichChild = whichChild; 731b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 732b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 733b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen /** 734b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen * Constructor called from {@link #CREATOR} 735b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen */ 736b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen private SavedState(Parcel in) { 737b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen super(in); 7383ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung this.whichChild = in.readInt(); 739b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 740b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 741b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen @Override 742b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public void writeToParcel(Parcel out, int flags) { 743b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen super.writeToParcel(out, flags); 7443ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung out.writeInt(this.whichChild); 745b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 746b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 747b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen @Override 748b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public String toString() { 7493ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return "AdapterViewAnimator.SavedState{ whichChild = " + this.whichChild + " }"; 750b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 751b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 752b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public static final Parcelable.Creator<SavedState> CREATOR 753b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen = new Parcelable.Creator<SavedState>() { 754b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public SavedState createFromParcel(Parcel in) { 755b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen return new SavedState(in); 756b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 757b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 758b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public SavedState[] newArray(int size) { 759b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen return new SavedState[size]; 760b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 761b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen }; 762b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 763b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 764b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen @Override 765b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public Parcelable onSaveInstanceState() { 766b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen Parcelable superState = super.onSaveInstanceState(); 767b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen return new SavedState(superState, mWhichChild); 768b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 769b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 770b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen @Override 771b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public void onRestoreInstanceState(Parcelable state) { 772b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen SavedState ss = (SavedState) state; 773b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen super.onRestoreInstanceState(ss.getSuperState()); 774b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 775b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen // Here we set mWhichChild in addition to setDisplayedChild 776b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen // We do the former in case mAdapter is null, and hence setDisplayedChild won't 777b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen // set mWhichChild 778b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen mWhichChild = ss.whichChild; 779b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen setDisplayedChild(mWhichChild); 780b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 781b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 7823db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 7833db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Shows only the specified child. The other displays Views exit the screen 7843db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * with the {@link #getOutAnimation() out animation} and the specified child 7853db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * enters the screen with the {@link #getInAnimation() in animation}. 7863db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 7873db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param childIndex The index of the child to be shown. 7883db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 7893db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen void showOnly(int childIndex) { 7903db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen final boolean animate = (!mFirstTime || mAnimateFirstTime); 7913db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen showOnly(childIndex, animate); 7923db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 7933db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 7943db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 7953db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Returns the View corresponding to the currently displayed child. 7963db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 7973db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @return The View currently displayed. 7983db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 7993db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #getDisplayedChild() 8003db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 8013db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public View getCurrentView() { 80244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return getViewAtRelativeIndex(mActiveOffset); 8033db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8043db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 8053db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 8063db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Returns the current animation used to animate a View that enters the screen. 8073db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 8083db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @return An Animation or null if none is set. 8093db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 8102794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @see #setInAnimation(android.animation.ObjectAnimator) 8113db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #setInAnimation(android.content.Context, int) 8123db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 8132794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public ObjectAnimator getInAnimation() { 8143db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen return mInAnimation; 8153db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8163db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 8173db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 8183db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Specifies the animation used to animate a View that enters the screen. 8193db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 8203db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param inAnimation The animation started when a View enters the screen. 8213db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 8223db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #getInAnimation() 8233db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #setInAnimation(android.content.Context, int) 8243db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 8252794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public void setInAnimation(ObjectAnimator inAnimation) { 8263db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mInAnimation = inAnimation; 8273db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8283db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 8293db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 8303db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Returns the current animation used to animate a View that exits the screen. 8313db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 8323db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @return An Animation or null if none is set. 8333db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 8342794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @see #setOutAnimation(android.animation.ObjectAnimator) 8353db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #setOutAnimation(android.content.Context, int) 8363db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 8372794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public ObjectAnimator getOutAnimation() { 8383db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen return mOutAnimation; 8393db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8403db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 8413db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 8423db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Specifies the animation used to animate a View that exit the screen. 8433db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 8443db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param outAnimation The animation started when a View exit the screen. 8453db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 8463db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #getOutAnimation() 8473db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #setOutAnimation(android.content.Context, int) 8483db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 8492794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public void setOutAnimation(ObjectAnimator outAnimation) { 8503db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mOutAnimation = outAnimation; 8513db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8523db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 8533db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 8543db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Specifies the animation used to animate a View that enters the screen. 8553db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 8563db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param context The application's environment. 8573db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param resourceID The resource id of the animation. 8583db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 8593db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #getInAnimation() 8602794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @see #setInAnimation(android.animation.ObjectAnimator) 8613db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 8623db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void setInAnimation(Context context, int resourceID) { 8632794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase setInAnimation((ObjectAnimator) AnimatorInflater.loadAnimator(context, resourceID)); 8643db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8653db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 8663db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 8673db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Specifies the animation used to animate a View that exit the screen. 8683db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 8693db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param context The application's environment. 8703db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param resourceID The resource id of the animation. 8713db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 8723db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #getOutAnimation() 8732794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @see #setOutAnimation(android.animation.ObjectAnimator) 8743db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 8753db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void setOutAnimation(Context context, int resourceID) { 8762794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase setOutAnimation((ObjectAnimator) AnimatorInflater.loadAnimator(context, resourceID)); 8773db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8783db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 8793db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 8803db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Indicates whether the current View should be animated the first time 8813db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * the ViewAnimation is displayed. 8823db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 8833db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param animate True to animate the current View the first time it is displayed, 8843db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * false otherwise. 8853db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 8863db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void setAnimateFirstView(boolean animate) { 8873db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mAnimateFirstTime = animate; 8883db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8893db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 8903db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen @Override 8913db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public int getBaseline() { 8923db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen return (getCurrentView() != null) ? getCurrentView().getBaseline() : super.getBaseline(); 8933db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8943db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 8953db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen @Override 8963db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public Adapter getAdapter() { 8973db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen return mAdapter; 8983db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8993db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 9003db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen @Override 9013db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void setAdapter(Adapter adapter) { 9028322834a2544a673a35c5d4ad0d5909b3ca37600Adam Cohen if (mAdapter != null && mDataSetObserver != null) { 9038322834a2544a673a35c5d4ad0d5909b3ca37600Adam Cohen mAdapter.unregisterDataSetObserver(mDataSetObserver); 9048322834a2544a673a35c5d4ad0d5909b3ca37600Adam Cohen } 9058322834a2544a673a35c5d4ad0d5909b3ca37600Adam Cohen 9063db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mAdapter = adapter; 9071480fddea874a42adb43b4bcdac6704e4c3e110bAdam Cohen checkFocus(); 9083db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 9093db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (mAdapter != null) { 9103db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mDataSetObserver = new AdapterDataSetObserver(); 9113db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mAdapter.registerDataSetObserver(mDataSetObserver); 9123db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 91344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen setFocusable(true); 9143db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 9153db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 9163db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 91744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Sets up this AdapterViewAnimator to use a remote views adapter which connects to a 91844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * RemoteViewsService through the specified intent. 91944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * 92044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param intent the intent used to identify the RemoteViewsService for the adapter to 92144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * connect to. 9223db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 9233db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen @android.view.RemotableViewMethod 9243db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void setRemoteViewsAdapter(Intent intent) { 9259b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung // Ensure that we don't already have a RemoteViewsAdapter that is bound to an existing 9269b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung // service handling the specified intent. 9273ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mRemoteViewsAdapter != null) { 9283ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung Intent.FilterComparison fcNew = new Intent.FilterComparison(intent); 9293ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung Intent.FilterComparison fcOld = new Intent.FilterComparison( 9303ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRemoteViewsAdapter.getRemoteViewsServiceIntent()); 9313ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (fcNew.equals(fcOld)) { 9323ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return; 9333ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 9349b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung } 9359b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung 9369b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung // Otherwise, create a new RemoteViewsAdapter for binding 9373db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mRemoteViewsAdapter = new RemoteViewsAdapter(getContext(), intent, this); 9383db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 9393db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 9403db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen @Override 9413db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void setSelection(int position) { 9423db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setDisplayedChild(position); 9433db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 9443db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 9453db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen @Override 9463db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public View getSelectedView() { 94744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return getViewAtRelativeIndex(mActiveOffset); 9483db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 9493db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 9503db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 9513db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Called back when the adapter connects to the RemoteViewsService. 9523db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 9533db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void onRemoteAdapterConnected() { 9543db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (mRemoteViewsAdapter != mAdapter) { 9553db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setAdapter(mRemoteViewsAdapter); 9563db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 9573db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 9583db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 9593db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 9603db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Called back when the adapter disconnects from the RemoteViewsService. 9613db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 9623db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void onRemoteAdapterDisconnected() { 9633db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (mRemoteViewsAdapter != mAdapter) { 9643db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mRemoteViewsAdapter = null; 9653db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setAdapter(mRemoteViewsAdapter); 9663db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 9673db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 9683db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen} 969