161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu/* 261905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu * Copyright (C) 2014 The Android Open Source Project 361905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu * 461905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu * in compliance with the License. You may obtain a copy of the License at 661905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu * 761905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu * http://www.apache.org/licenses/LICENSE-2.0 861905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu * 961905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu * Unless required by applicable law or agreed to in writing, software distributed under the License 1061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 1161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu * or implied. See the License for the specific language governing permissions and limitations under 1261905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu * the License. 1361905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu */ 1461905b0b52c50018dcaebcd79699c39b8f28d622Dake Gupackage android.support.v17.leanback.app; 1561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 1661905b0b52c50018dcaebcd79699c39b8f28d622Dake Guimport android.os.Bundle; 1761905b0b52c50018dcaebcd79699c39b8f28d622Dake Guimport android.support.v17.leanback.widget.ItemBridgeAdapter; 1861905b0b52c50018dcaebcd79699c39b8f28d622Dake Guimport android.support.v17.leanback.widget.ListRow; 192f5ebf3f6f7bb6a24856f389e369b247118ba119susnataimport android.support.v17.leanback.widget.ObjectAdapter; 200246318f27a905a31df5a8af445cfe67d31dfb68Dake Guimport android.support.v17.leanback.widget.OnChildViewHolderSelectedListener; 212f5ebf3f6f7bb6a24856f389e369b247118ba119susnataimport android.support.v17.leanback.widget.PresenterSelector; 222f5ebf3f6f7bb6a24856f389e369b247118ba119susnataimport android.support.v17.leanback.widget.Row; 232f5ebf3f6f7bb6a24856f389e369b247118ba119susnataimport android.support.v17.leanback.widget.VerticalGridView; 24b86a6c2c71514e0cb693597a955e224811b90f96Dake Guimport android.support.v4.app.Fragment; 250246318f27a905a31df5a8af445cfe67d31dfb68Dake Guimport android.support.v7.widget.RecyclerView; 2661905b0b52c50018dcaebcd79699c39b8f28d622Dake Guimport android.view.LayoutInflater; 2761905b0b52c50018dcaebcd79699c39b8f28d622Dake Guimport android.view.View; 2861905b0b52c50018dcaebcd79699c39b8f28d622Dake Guimport android.view.ViewGroup; 2961905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 3061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu/** 3161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu * An internal base class for a fragment containing a list of rows. 3261905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu */ 3361905b0b52c50018dcaebcd79699c39b8f28d622Dake Guabstract class BaseRowSupportFragment extends Fragment { 34fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak private static final String CURRENT_SELECTED_POSITION = "currentSelectedPosition"; 3561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu private ObjectAdapter mAdapter; 3699ec8b0cb375f7e5577ea3ec9f09e6ff7a95de0dAurimas Liutikas VerticalGridView mVerticalGridView; 3761905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu private PresenterSelector mPresenterSelector; 3850cf9ada93e50e906f20f5edf595234ada196d45Dake Gu final ItemBridgeAdapter mBridgeAdapter = new ItemBridgeAdapter(); 3999ec8b0cb375f7e5577ea3ec9f09e6ff7a95de0dAurimas Liutikas int mSelectedPosition = -1; 40902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu private boolean mPendingTransitionPrepare; 41bb0a680c10b84b83833a59634373140f8bd0750csusnata private LateSelectionObserver mLateSelectionObserver = new LateSelectionObserver(); 4261905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 4342752c860a26deacca04ea9ebeb00ddb4d8ce2fcDake Gu abstract int getLayoutResourceId(); 4461905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 450246318f27a905a31df5a8af445cfe67d31dfb68Dake Gu private final OnChildViewHolderSelectedListener mRowSelectedListener = 460246318f27a905a31df5a8af445cfe67d31dfb68Dake Gu new OnChildViewHolderSelectedListener() { 470246318f27a905a31df5a8af445cfe67d31dfb68Dake Gu @Override 480246318f27a905a31df5a8af445cfe67d31dfb68Dake Gu public void onChildViewHolderSelected(RecyclerView parent, 490246318f27a905a31df5a8af445cfe67d31dfb68Dake Gu RecyclerView.ViewHolder view, int position, int subposition) { 50514b6d101c6b7d4b7151cf8789424bde66fab511Dake Gu if (!mLateSelectionObserver.mIsLateSelection) { 51514b6d101c6b7d4b7151cf8789424bde66fab511Dake Gu mSelectedPosition = position; 52514b6d101c6b7d4b7151cf8789424bde66fab511Dake Gu onRowSelected(parent, view, position, subposition); 53514b6d101c6b7d4b7151cf8789424bde66fab511Dake Gu } 540246318f27a905a31df5a8af445cfe67d31dfb68Dake Gu } 550246318f27a905a31df5a8af445cfe67d31dfb68Dake Gu }; 5661905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 570246318f27a905a31df5a8af445cfe67d31dfb68Dake Gu void onRowSelected(RecyclerView parent, RecyclerView.ViewHolder view, 580246318f27a905a31df5a8af445cfe67d31dfb68Dake Gu int position, int subposition) { 5961905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 6061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 6161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu @Override 6261905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu public View onCreateView(LayoutInflater inflater, ViewGroup container, 6361905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu Bundle savedInstanceState) { 6461905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu View view = inflater.inflate(getLayoutResourceId(), container, false); 6561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu mVerticalGridView = findGridViewFromRoot(view); 66902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu if (mPendingTransitionPrepare) { 67902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu mPendingTransitionPrepare = false; 68902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu onTransitionPrepare(); 69902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu } 7061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu return view; 7161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 7261905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 7342752c860a26deacca04ea9ebeb00ddb4d8ce2fcDake Gu VerticalGridView findGridViewFromRoot(View view) { 7461905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu return (VerticalGridView) view; 7561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 7661905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 7761905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu @Override 7861905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu public void onViewCreated(View view, Bundle savedInstanceState) { 79fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak if (savedInstanceState != null) { 80fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak mSelectedPosition = savedInstanceState.getInt(CURRENT_SELECTED_POSITION, -1); 81fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak } 8250cf9ada93e50e906f20f5edf595234ada196d45Dake Gu setAdapterAndSelection(); 83bb0a680c10b84b83833a59634373140f8bd0750csusnata mVerticalGridView.setOnChildViewHolderSelectedListener(mRowSelectedListener); 84bb0a680c10b84b83833a59634373140f8bd0750csusnata } 85bb0a680c10b84b83833a59634373140f8bd0750csusnata 86bb0a680c10b84b83833a59634373140f8bd0750csusnata /** 87bb0a680c10b84b83833a59634373140f8bd0750csusnata * This class waits for the adapter to be updated before setting the selected 88bb0a680c10b84b83833a59634373140f8bd0750csusnata * row. 89bb0a680c10b84b83833a59634373140f8bd0750csusnata */ 90bb0a680c10b84b83833a59634373140f8bd0750csusnata private class LateSelectionObserver extends RecyclerView.AdapterDataObserver { 91bb0a680c10b84b83833a59634373140f8bd0750csusnata boolean mIsLateSelection = false; 92bb0a680c10b84b83833a59634373140f8bd0750csusnata 9399ec8b0cb375f7e5577ea3ec9f09e6ff7a95de0dAurimas Liutikas LateSelectionObserver() { 9499ec8b0cb375f7e5577ea3ec9f09e6ff7a95de0dAurimas Liutikas } 9599ec8b0cb375f7e5577ea3ec9f09e6ff7a95de0dAurimas Liutikas 9615375aa6fd54b036f97f99229aefab2822c8a1c9Aurimas Liutikas @Override 97bb0a680c10b84b83833a59634373140f8bd0750csusnata public void onChanged() { 98bb0a680c10b84b83833a59634373140f8bd0750csusnata performLateSelection(); 99bb0a680c10b84b83833a59634373140f8bd0750csusnata } 100bb0a680c10b84b83833a59634373140f8bd0750csusnata 10115375aa6fd54b036f97f99229aefab2822c8a1c9Aurimas Liutikas @Override 102bb0a680c10b84b83833a59634373140f8bd0750csusnata public void onItemRangeInserted(int positionStart, int itemCount) { 103bb0a680c10b84b83833a59634373140f8bd0750csusnata performLateSelection(); 104bb0a680c10b84b83833a59634373140f8bd0750csusnata } 105bb0a680c10b84b83833a59634373140f8bd0750csusnata 106bb0a680c10b84b83833a59634373140f8bd0750csusnata void startLateSelection() { 107bb0a680c10b84b83833a59634373140f8bd0750csusnata mIsLateSelection = true; 108bb0a680c10b84b83833a59634373140f8bd0750csusnata mBridgeAdapter.registerAdapterDataObserver(this); 109bb0a680c10b84b83833a59634373140f8bd0750csusnata } 110bb0a680c10b84b83833a59634373140f8bd0750csusnata 111bb0a680c10b84b83833a59634373140f8bd0750csusnata void performLateSelection() { 112bb0a680c10b84b83833a59634373140f8bd0750csusnata clear(); 113bb0a680c10b84b83833a59634373140f8bd0750csusnata if (mVerticalGridView != null) { 11461905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu mVerticalGridView.setSelectedPosition(mSelectedPosition); 11561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 11661905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 117bb0a680c10b84b83833a59634373140f8bd0750csusnata 118bb0a680c10b84b83833a59634373140f8bd0750csusnata void clear() { 119bb0a680c10b84b83833a59634373140f8bd0750csusnata if (mIsLateSelection) { 120bb0a680c10b84b83833a59634373140f8bd0750csusnata mIsLateSelection = false; 121bb0a680c10b84b83833a59634373140f8bd0750csusnata mBridgeAdapter.unregisterAdapterDataObserver(this); 122bb0a680c10b84b83833a59634373140f8bd0750csusnata } 123bb0a680c10b84b83833a59634373140f8bd0750csusnata } 124bb0a680c10b84b83833a59634373140f8bd0750csusnata } 125bb0a680c10b84b83833a59634373140f8bd0750csusnata 126bb0a680c10b84b83833a59634373140f8bd0750csusnata void setAdapterAndSelection() { 127c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu if (mAdapter == null) { 128c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu // delay until ItemBridgeAdapter has wrappedAdapter. Once we assign ItemBridgeAdapter 129c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu // to RecyclerView, it will not be allowed to change "hasStableId" to true. 130c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu return; 131c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu } 132c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu if (mVerticalGridView.getAdapter() != mBridgeAdapter) { 133c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu // avoid extra layout if ItemBridgeAdapter was already set. 134c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu mVerticalGridView.setAdapter(mBridgeAdapter); 135c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu } 136bb0a680c10b84b83833a59634373140f8bd0750csusnata // We don't set the selected position unless we've data in the adapter. 137bb0a680c10b84b83833a59634373140f8bd0750csusnata boolean lateSelection = mBridgeAdapter.getItemCount() == 0 && mSelectedPosition >= 0; 138bb0a680c10b84b83833a59634373140f8bd0750csusnata if (lateSelection) { 139bb0a680c10b84b83833a59634373140f8bd0750csusnata mLateSelectionObserver.startLateSelection(); 140bb0a680c10b84b83833a59634373140f8bd0750csusnata } else if (mSelectedPosition >= 0) { 141bb0a680c10b84b83833a59634373140f8bd0750csusnata mVerticalGridView.setSelectedPosition(mSelectedPosition); 142bb0a680c10b84b83833a59634373140f8bd0750csusnata } 14361905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 14461905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 14561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu @Override 14661905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu public void onDestroyView() { 14761905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu super.onDestroyView(); 148bb0a680c10b84b83833a59634373140f8bd0750csusnata mLateSelectionObserver.clear(); 14961905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu mVerticalGridView = null; 15061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 15161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 152fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak @Override 153fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak public void onSaveInstanceState(Bundle outState) { 154fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak super.onSaveInstanceState(outState); 155fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak outState.putInt(CURRENT_SELECTED_POSITION, mSelectedPosition); 156fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak } 157fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak 15861905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu /** 15961905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu * Set the presenter selector used to create and bind views. 16061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu */ 16161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu public final void setPresenterSelector(PresenterSelector presenterSelector) { 16261905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu mPresenterSelector = presenterSelector; 16361905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu updateAdapter(); 16461905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 16561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 16661905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu /** 16761905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu * Get the presenter selector used to create and bind views. 16861905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu */ 16961905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu public final PresenterSelector getPresenterSelector() { 17061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu return mPresenterSelector; 17161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 17261905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 17361905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu /** 174c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu * Sets the adapter that represents a list of rows. 175c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu * @param rowsAdapter Adapter that represents list of rows. 17661905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu */ 17761905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu public final void setAdapter(ObjectAdapter rowsAdapter) { 17861905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu mAdapter = rowsAdapter; 17961905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu updateAdapter(); 18061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 18161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 18261905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu /** 183c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu * Returns the Adapter that represents list of rows. 184c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu * @return Adapter that represents list of rows. 18561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu */ 18661905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu public final ObjectAdapter getAdapter() { 18761905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu return mAdapter; 18861905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 18961905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 19061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu /** 191c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu * Returns the RecyclerView.Adapter that wraps {@link #getAdapter()}. 192c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu * @return The RecyclerView.Adapter that wraps {@link #getAdapter()}. 19361905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu */ 194c807587e03e775abb23f62894ad59bfb91cfbd97Dake Gu public final ItemBridgeAdapter getBridgeAdapter() { 19561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu return mBridgeAdapter; 19661905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 19761905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 19861905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu /** 1993f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu * Sets the selected row position with smooth animation. 20061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu */ 20161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu public void setSelectedPosition(int position) { 2023f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu setSelectedPosition(position, true); 2033f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu } 2043f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu 2053f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu /** 2060d73d42df7cf4b325b8f49660e3326204915ce8fDake Gu * Gets position of currently selected row. 2070d73d42df7cf4b325b8f49660e3326204915ce8fDake Gu * @return Position of currently selected row. 2080d73d42df7cf4b325b8f49660e3326204915ce8fDake Gu */ 2092f1bd591e01fe93f605844d4a10cde7116315b7cDake Gu public int getSelectedPosition() { 2100d73d42df7cf4b325b8f49660e3326204915ce8fDake Gu return mSelectedPosition; 2110d73d42df7cf4b325b8f49660e3326204915ce8fDake Gu } 2120d73d42df7cf4b325b8f49660e3326204915ce8fDake Gu 2130d73d42df7cf4b325b8f49660e3326204915ce8fDake Gu /** 2143f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu * Sets the selected row position. 2153f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu */ 2163f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu public void setSelectedPosition(int position, boolean smooth) { 2170d841b3454f896da58deb506ca22730bfd04f34fDake Gu if (mSelectedPosition == position) { 2180d841b3454f896da58deb506ca22730bfd04f34fDake Gu return; 2190d841b3454f896da58deb506ca22730bfd04f34fDake Gu } 22061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu mSelectedPosition = position; 22150cf9ada93e50e906f20f5edf595234ada196d45Dake Gu if (mVerticalGridView != null) { 222bb0a680c10b84b83833a59634373140f8bd0750csusnata if (mLateSelectionObserver.mIsLateSelection) { 223bb0a680c10b84b83833a59634373140f8bd0750csusnata return; 224bb0a680c10b84b83833a59634373140f8bd0750csusnata } 2253f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu if (smooth) { 2263f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu mVerticalGridView.setSelectedPositionSmooth(position); 2273f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu } else { 2283f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu mVerticalGridView.setSelectedPosition(position); 2293f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu } 23061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 23161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 23261905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 233935b033edfd9d03129fce6a5b7a1d3a327b74f91susnata public final VerticalGridView getVerticalGridView() { 23461905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu return mVerticalGridView; 23561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 23661905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 23742752c860a26deacca04ea9ebeb00ddb4d8ce2fcDake Gu void updateAdapter() { 23850cf9ada93e50e906f20f5edf595234ada196d45Dake Gu mBridgeAdapter.setAdapter(mAdapter); 23950cf9ada93e50e906f20f5edf595234ada196d45Dake Gu mBridgeAdapter.setPresenter(mPresenterSelector); 24061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 24161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu if (mVerticalGridView != null) { 242bb0a680c10b84b83833a59634373140f8bd0750csusnata setAdapterAndSelection(); 24361905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 24461905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 24561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 24642752c860a26deacca04ea9ebeb00ddb4d8ce2fcDake Gu Object getItem(Row row, int position) { 24761905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu if (row instanceof ListRow) { 24861905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu return ((ListRow) row).getAdapter().get(position); 24961905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } else { 25061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu return null; 25161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 25261905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 25361905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 2542f5ebf3f6f7bb6a24856f389e369b247118ba119susnata public boolean onTransitionPrepare() { 25561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu if (mVerticalGridView != null) { 25661905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu mVerticalGridView.setAnimateChildLayout(false); 257902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu mVerticalGridView.setScrollEnabled(false); 258902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu return true; 25961905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 260902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu mPendingTransitionPrepare = true; 261902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu return false; 262902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu } 263902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu 2642f5ebf3f6f7bb6a24856f389e369b247118ba119susnata public void onTransitionStart() { 2654a4e0872bdf0548188e81740eb62085215e7f976Dake Gu if (mVerticalGridView != null) { 2664a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setPruneChild(false); 2674a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setLayoutFrozen(true); 2684a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setFocusSearchDisabled(true); 2694a4e0872bdf0548188e81740eb62085215e7f976Dake Gu } 27061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 27161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 2722f5ebf3f6f7bb6a24856f389e369b247118ba119susnata public void onTransitionEnd() { 2734a4e0872bdf0548188e81740eb62085215e7f976Dake Gu // be careful that fragment might be destroyed before header transition ends. 2744a4e0872bdf0548188e81740eb62085215e7f976Dake Gu if (mVerticalGridView != null) { 2754a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setLayoutFrozen(false); 2764a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setAnimateChildLayout(true); 2774a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setPruneChild(true); 2784a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setFocusSearchDisabled(false); 2794a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setScrollEnabled(true); 2804a4e0872bdf0548188e81740eb62085215e7f976Dake Gu } 28161905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 28261905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 2832f5ebf3f6f7bb6a24856f389e369b247118ba119susnata public void setAlignment(int windowAlignOffsetTop) { 28461905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu if (mVerticalGridView != null) { 28561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu // align the top edge of item 28661905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu mVerticalGridView.setItemAlignmentOffset(0); 28761905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu mVerticalGridView.setItemAlignmentOffsetPercent( 28861905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu VerticalGridView.ITEM_ALIGN_OFFSET_PERCENT_DISABLED); 28961905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu 29061905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu // align to a fixed position from top 2912f5ebf3f6f7bb6a24856f389e369b247118ba119susnata mVerticalGridView.setWindowAlignmentOffset(windowAlignOffsetTop); 29261905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu mVerticalGridView.setWindowAlignmentOffsetPercent( 29361905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu VerticalGridView.WINDOW_ALIGN_OFFSET_PERCENT_DISABLED); 29461905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu mVerticalGridView.setWindowAlignment(VerticalGridView.WINDOW_ALIGN_NO_EDGE); 29561905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 29661905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu } 29761905b0b52c50018dcaebcd79699c39b8f28d622Dake Gu} 298