155c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout/* 255c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout * Copyright (C) 2014 The Android Open Source Project 355c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout * 455c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 555c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout * in compliance with the License. You may obtain a copy of the License at 655c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout * 755c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout * http://www.apache.org/licenses/LICENSE-2.0 855c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout * 955c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout * Unless required by applicable law or agreed to in writing, software distributed under the License 1055c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 1155c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout * or implied. See the License for the specific language governing permissions and limitations under 1255c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout * the License. 1355c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout */ 1455c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stoutpackage android.support.v17.leanback.app; 1555c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 1655c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stoutimport android.app.Fragment; 1755c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stoutimport android.os.Bundle; 1855c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stoutimport android.support.v17.leanback.widget.ItemBridgeAdapter; 1955c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stoutimport android.support.v17.leanback.widget.ListRow; 202f5ebf3f6f7bb6a24856f389e369b247118ba119susnataimport android.support.v17.leanback.widget.ObjectAdapter; 210246318f27a905a31df5a8af445cfe67d31dfb68Dake Guimport android.support.v17.leanback.widget.OnChildViewHolderSelectedListener; 222f5ebf3f6f7bb6a24856f389e369b247118ba119susnataimport android.support.v17.leanback.widget.PresenterSelector; 232f5ebf3f6f7bb6a24856f389e369b247118ba119susnataimport android.support.v17.leanback.widget.Row; 242f5ebf3f6f7bb6a24856f389e369b247118ba119susnataimport android.support.v17.leanback.widget.VerticalGridView; 250246318f27a905a31df5a8af445cfe67d31dfb68Dake Guimport android.support.v7.widget.RecyclerView; 2655c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stoutimport android.view.LayoutInflater; 2755c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stoutimport android.view.View; 2855c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stoutimport android.view.ViewGroup; 2955c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 3055c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout/** 31a8a3b898da49324e83ea32c3f08776a481312166Tim Kilbourn * An internal base class for a fragment containing a list of rows. 3255c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout */ 3355c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stoutabstract class BaseRowFragment extends Fragment { 34fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak private static final String CURRENT_SELECTED_POSITION = "currentSelectedPosition"; 3555c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout private ObjectAdapter mAdapter; 36a8a3b898da49324e83ea32c3f08776a481312166Tim Kilbourn private VerticalGridView mVerticalGridView; 3755c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout private PresenterSelector mPresenterSelector; 3855c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout private ItemBridgeAdapter mBridgeAdapter; 3955c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout private int mSelectedPosition = -1; 40902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu private boolean mPendingTransitionPrepare; 41bb0a680c10b84b83833a59634373140f8bd0750csusnata private LateSelectionObserver mLateSelectionObserver = new LateSelectionObserver(); 4255c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 4342752c860a26deacca04ea9ebeb00ddb4d8ce2fcDake Gu abstract int getLayoutResourceId(); 4455c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 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) { 500d841b3454f896da58deb506ca22730bfd04f34fDake Gu mSelectedPosition = position; 510246318f27a905a31df5a8af445cfe67d31dfb68Dake Gu onRowSelected(parent, view, position, subposition); 520246318f27a905a31df5a8af445cfe67d31dfb68Dake Gu } 530246318f27a905a31df5a8af445cfe67d31dfb68Dake Gu }; 5455c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 550246318f27a905a31df5a8af445cfe67d31dfb68Dake Gu void onRowSelected(RecyclerView parent, RecyclerView.ViewHolder view, 560246318f27a905a31df5a8af445cfe67d31dfb68Dake Gu int position, int subposition) { 5755c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 5855c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 5955c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout @Override 607a208cd35be79a69b1f4f36724b85ab96eb23e75Dake Gu public View onCreateView(LayoutInflater inflater, ViewGroup container, 617a208cd35be79a69b1f4f36724b85ab96eb23e75Dake Gu Bundle savedInstanceState) { 627a208cd35be79a69b1f4f36724b85ab96eb23e75Dake Gu View view = inflater.inflate(getLayoutResourceId(), container, false); 637a208cd35be79a69b1f4f36724b85ab96eb23e75Dake Gu mVerticalGridView = findGridViewFromRoot(view); 64902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu if (mPendingTransitionPrepare) { 65902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu mPendingTransitionPrepare = false; 66902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu onTransitionPrepare(); 67902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu } 687a208cd35be79a69b1f4f36724b85ab96eb23e75Dake Gu return view; 697a208cd35be79a69b1f4f36724b85ab96eb23e75Dake Gu } 707a208cd35be79a69b1f4f36724b85ab96eb23e75Dake Gu 7142752c860a26deacca04ea9ebeb00ddb4d8ce2fcDake Gu VerticalGridView findGridViewFromRoot(View view) { 727a208cd35be79a69b1f4f36724b85ab96eb23e75Dake Gu return (VerticalGridView) view; 7355c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 7455c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 7555c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout @Override 7655c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout public void onViewCreated(View view, Bundle savedInstanceState) { 77fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak if (savedInstanceState != null) { 78fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak mSelectedPosition = savedInstanceState.getInt(CURRENT_SELECTED_POSITION, -1); 79fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak } 8055c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout if (mBridgeAdapter != null) { 81bb0a680c10b84b83833a59634373140f8bd0750csusnata setAdapterAndSelection(); 82bb0a680c10b84b83833a59634373140f8bd0750csusnata } 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 93bb0a680c10b84b83833a59634373140f8bd0750csusnata public void onChanged() { 94bb0a680c10b84b83833a59634373140f8bd0750csusnata performLateSelection(); 95bb0a680c10b84b83833a59634373140f8bd0750csusnata } 96bb0a680c10b84b83833a59634373140f8bd0750csusnata 97bb0a680c10b84b83833a59634373140f8bd0750csusnata public void onItemRangeInserted(int positionStart, int itemCount) { 98bb0a680c10b84b83833a59634373140f8bd0750csusnata performLateSelection(); 99bb0a680c10b84b83833a59634373140f8bd0750csusnata } 100bb0a680c10b84b83833a59634373140f8bd0750csusnata 101bb0a680c10b84b83833a59634373140f8bd0750csusnata void startLateSelection() { 102bb0a680c10b84b83833a59634373140f8bd0750csusnata mIsLateSelection = true; 103bb0a680c10b84b83833a59634373140f8bd0750csusnata mBridgeAdapter.registerAdapterDataObserver(this); 104bb0a680c10b84b83833a59634373140f8bd0750csusnata } 105bb0a680c10b84b83833a59634373140f8bd0750csusnata 106bb0a680c10b84b83833a59634373140f8bd0750csusnata void performLateSelection() { 107bb0a680c10b84b83833a59634373140f8bd0750csusnata clear(); 108bb0a680c10b84b83833a59634373140f8bd0750csusnata if (mVerticalGridView != null) { 109a8a3b898da49324e83ea32c3f08776a481312166Tim Kilbourn mVerticalGridView.setSelectedPosition(mSelectedPosition); 11055c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 11155c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 112bb0a680c10b84b83833a59634373140f8bd0750csusnata 113bb0a680c10b84b83833a59634373140f8bd0750csusnata void clear() { 114bb0a680c10b84b83833a59634373140f8bd0750csusnata if (mIsLateSelection) { 115bb0a680c10b84b83833a59634373140f8bd0750csusnata mIsLateSelection = false; 116bb0a680c10b84b83833a59634373140f8bd0750csusnata mBridgeAdapter.unregisterAdapterDataObserver(this); 117bb0a680c10b84b83833a59634373140f8bd0750csusnata } 118bb0a680c10b84b83833a59634373140f8bd0750csusnata } 119bb0a680c10b84b83833a59634373140f8bd0750csusnata } 120bb0a680c10b84b83833a59634373140f8bd0750csusnata 121bb0a680c10b84b83833a59634373140f8bd0750csusnata void setAdapterAndSelection() { 122bb0a680c10b84b83833a59634373140f8bd0750csusnata mVerticalGridView.setAdapter(mBridgeAdapter); 123bb0a680c10b84b83833a59634373140f8bd0750csusnata // We don't set the selected position unless we've data in the adapter. 124bb0a680c10b84b83833a59634373140f8bd0750csusnata boolean lateSelection = mBridgeAdapter.getItemCount() == 0 && mSelectedPosition >= 0; 125bb0a680c10b84b83833a59634373140f8bd0750csusnata if (lateSelection) { 126bb0a680c10b84b83833a59634373140f8bd0750csusnata mLateSelectionObserver.startLateSelection(); 127bb0a680c10b84b83833a59634373140f8bd0750csusnata } else if (mSelectedPosition >= 0) { 128bb0a680c10b84b83833a59634373140f8bd0750csusnata mVerticalGridView.setSelectedPosition(mSelectedPosition); 129bb0a680c10b84b83833a59634373140f8bd0750csusnata } 13055c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 13155c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 13255c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout @Override 13355c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout public void onDestroyView() { 13455c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout super.onDestroyView(); 135bb0a680c10b84b83833a59634373140f8bd0750csusnata mLateSelectionObserver.clear(); 136a8a3b898da49324e83ea32c3f08776a481312166Tim Kilbourn mVerticalGridView = null; 13755c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 13855c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 139fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak @Override 140fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak public void onSaveInstanceState(Bundle outState) { 141fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak super.onSaveInstanceState(outState); 142fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak outState.putInt(CURRENT_SELECTED_POSITION, mSelectedPosition); 143fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak } 144fb11ded6cfa3965883e68625e0c7e14b4b4fe0b3Susnata Basak 14555c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout /** 146cf94c5fa8ae8edb7e26a623133207415ceeed187Dake Gu * Set the presenter selector used to create and bind views. 14755c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout */ 148cf94c5fa8ae8edb7e26a623133207415ceeed187Dake Gu public final void setPresenterSelector(PresenterSelector presenterSelector) { 14955c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout mPresenterSelector = presenterSelector; 15055c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout updateAdapter(); 15155c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 15255c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 15355c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout /** 154cf94c5fa8ae8edb7e26a623133207415ceeed187Dake Gu * Get the presenter selector used to create and bind views. 155cf94c5fa8ae8edb7e26a623133207415ceeed187Dake Gu */ 156cf94c5fa8ae8edb7e26a623133207415ceeed187Dake Gu public final PresenterSelector getPresenterSelector() { 157cf94c5fa8ae8edb7e26a623133207415ceeed187Dake Gu return mPresenterSelector; 158cf94c5fa8ae8edb7e26a623133207415ceeed187Dake Gu } 159cf94c5fa8ae8edb7e26a623133207415ceeed187Dake Gu 160cf94c5fa8ae8edb7e26a623133207415ceeed187Dake Gu /** 16155c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout * Sets the adapter for the fragment. 16255c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout */ 163cf94c5fa8ae8edb7e26a623133207415ceeed187Dake Gu public final void setAdapter(ObjectAdapter rowsAdapter) { 16455c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout mAdapter = rowsAdapter; 16555c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout updateAdapter(); 16655c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 16755c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 16855c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout /** 16955c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout * Returns the list of rows. 17055c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout */ 17155c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout public final ObjectAdapter getAdapter() { 17255c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout return mAdapter; 17355c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 17455c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 17555c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout /** 17655c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout * Returns the bridge adapter. 17755c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout */ 17842752c860a26deacca04ea9ebeb00ddb4d8ce2fcDake Gu final ItemBridgeAdapter getBridgeAdapter() { 17955c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout return mBridgeAdapter; 18055c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 18155c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 18255c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout /** 1833f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu * Sets the selected row position with smooth animation. 18455c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout */ 185025aa57d4fdd4e79289303c7dc54169311728f7bCraig Stout public void setSelectedPosition(int position) { 1863f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu setSelectedPosition(position, true); 1873f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu } 1883f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu 1893f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu /** 1900d73d42df7cf4b325b8f49660e3326204915ce8fDake Gu * Gets position of currently selected row. 1910d73d42df7cf4b325b8f49660e3326204915ce8fDake Gu * @return Position of currently selected row. 1920d73d42df7cf4b325b8f49660e3326204915ce8fDake Gu */ 1932f1bd591e01fe93f605844d4a10cde7116315b7cDake Gu public int getSelectedPosition() { 1940d73d42df7cf4b325b8f49660e3326204915ce8fDake Gu return mSelectedPosition; 1950d73d42df7cf4b325b8f49660e3326204915ce8fDake Gu } 1960d73d42df7cf4b325b8f49660e3326204915ce8fDake Gu 1970d73d42df7cf4b325b8f49660e3326204915ce8fDake Gu /** 1983f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu * Sets the selected row position. 1993f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu */ 2003f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu public void setSelectedPosition(int position, boolean smooth) { 2010d841b3454f896da58deb506ca22730bfd04f34fDake Gu if (mSelectedPosition == position) { 2020d841b3454f896da58deb506ca22730bfd04f34fDake Gu return; 2030d841b3454f896da58deb506ca22730bfd04f34fDake Gu } 20455c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout mSelectedPosition = position; 205a8a3b898da49324e83ea32c3f08776a481312166Tim Kilbourn if(mVerticalGridView != null && mVerticalGridView.getAdapter() != null) { 206bb0a680c10b84b83833a59634373140f8bd0750csusnata if (mLateSelectionObserver.mIsLateSelection) { 207bb0a680c10b84b83833a59634373140f8bd0750csusnata return; 208bb0a680c10b84b83833a59634373140f8bd0750csusnata } 2093f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu if (smooth) { 2103f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu mVerticalGridView.setSelectedPositionSmooth(position); 2113f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu } else { 2123f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu mVerticalGridView.setSelectedPosition(position); 2133f0f3eb255bde49549a77c0b5d252decaa2a0202Dake Gu } 21455c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 21555c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 21655c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 217a8a3b898da49324e83ea32c3f08776a481312166Tim Kilbourn final VerticalGridView getVerticalGridView() { 218a8a3b898da49324e83ea32c3f08776a481312166Tim Kilbourn return mVerticalGridView; 21955c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 22055c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 22142752c860a26deacca04ea9ebeb00ddb4d8ce2fcDake Gu void updateAdapter() { 222e71207666a1a915e5a5bdf7503bd936f4d87b48bDake Gu if (mBridgeAdapter != null) { 223e71207666a1a915e5a5bdf7503bd936f4d87b48bDake Gu // detach observer from ObjectAdapter 224bb0a680c10b84b83833a59634373140f8bd0750csusnata mLateSelectionObserver.clear(); 225e71207666a1a915e5a5bdf7503bd936f4d87b48bDake Gu mBridgeAdapter.clear(); 226e71207666a1a915e5a5bdf7503bd936f4d87b48bDake Gu mBridgeAdapter = null; 227e71207666a1a915e5a5bdf7503bd936f4d87b48bDake Gu } 22855c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 22955c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout if (mAdapter != null) { 23055c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout // If presenter selector is null, adapter ps will be used 23155c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout mBridgeAdapter = new ItemBridgeAdapter(mAdapter, mPresenterSelector); 23255c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 233a8a3b898da49324e83ea32c3f08776a481312166Tim Kilbourn if (mVerticalGridView != null) { 234bb0a680c10b84b83833a59634373140f8bd0750csusnata setAdapterAndSelection(); 23555c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 23655c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 23755c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout 23842752c860a26deacca04ea9ebeb00ddb4d8ce2fcDake Gu Object getItem(Row row, int position) { 23955c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout if (row instanceof ListRow) { 24055c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout return ((ListRow) row).getAdapter().get(position); 24155c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } else { 24255c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout return null; 24355c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 24455c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout } 2452f97594742886d045ca1ce409ebc6e6e780452f6Dake Gu 2462f5ebf3f6f7bb6a24856f389e369b247118ba119susnata public boolean onTransitionPrepare() { 2472f97594742886d045ca1ce409ebc6e6e780452f6Dake Gu if (mVerticalGridView != null) { 2482f97594742886d045ca1ce409ebc6e6e780452f6Dake Gu mVerticalGridView.setAnimateChildLayout(false); 249902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu mVerticalGridView.setScrollEnabled(false); 250902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu return true; 2512f97594742886d045ca1ce409ebc6e6e780452f6Dake Gu } 252902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu mPendingTransitionPrepare = true; 253902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu return false; 254902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu } 255902e68c114f86e8002516ff3f0248b722b6c5711Dake Gu 2562f5ebf3f6f7bb6a24856f389e369b247118ba119susnata public void onTransitionStart() { 2574a4e0872bdf0548188e81740eb62085215e7f976Dake Gu if (mVerticalGridView != null) { 2584a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setPruneChild(false); 2594a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setLayoutFrozen(true); 2604a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setFocusSearchDisabled(true); 2614a4e0872bdf0548188e81740eb62085215e7f976Dake Gu } 2622f97594742886d045ca1ce409ebc6e6e780452f6Dake Gu } 2632f97594742886d045ca1ce409ebc6e6e780452f6Dake Gu 2642f5ebf3f6f7bb6a24856f389e369b247118ba119susnata public void onTransitionEnd() { 2654a4e0872bdf0548188e81740eb62085215e7f976Dake Gu // be careful that fragment might be destroyed before header transition ends. 2664a4e0872bdf0548188e81740eb62085215e7f976Dake Gu if (mVerticalGridView != null) { 2674a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setLayoutFrozen(false); 2684a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setAnimateChildLayout(true); 2694a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setPruneChild(true); 2704a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setFocusSearchDisabled(false); 2714a4e0872bdf0548188e81740eb62085215e7f976Dake Gu mVerticalGridView.setScrollEnabled(true); 2724a4e0872bdf0548188e81740eb62085215e7f976Dake Gu } 2732f97594742886d045ca1ce409ebc6e6e780452f6Dake Gu } 274e43e9266c4b7e4902fefb5d2a0cacca90a3d2681Dake Gu 2752f5ebf3f6f7bb6a24856f389e369b247118ba119susnata public void setAlignment(int windowAlignOffsetTop) { 276e43e9266c4b7e4902fefb5d2a0cacca90a3d2681Dake Gu if (mVerticalGridView != null) { 277e43e9266c4b7e4902fefb5d2a0cacca90a3d2681Dake Gu // align the top edge of item 278e43e9266c4b7e4902fefb5d2a0cacca90a3d2681Dake Gu mVerticalGridView.setItemAlignmentOffset(0); 279e43e9266c4b7e4902fefb5d2a0cacca90a3d2681Dake Gu mVerticalGridView.setItemAlignmentOffsetPercent( 280e43e9266c4b7e4902fefb5d2a0cacca90a3d2681Dake Gu VerticalGridView.ITEM_ALIGN_OFFSET_PERCENT_DISABLED); 281e43e9266c4b7e4902fefb5d2a0cacca90a3d2681Dake Gu 282e43e9266c4b7e4902fefb5d2a0cacca90a3d2681Dake Gu // align to a fixed position from top 2832f5ebf3f6f7bb6a24856f389e369b247118ba119susnata mVerticalGridView.setWindowAlignmentOffset(windowAlignOffsetTop); 284e43e9266c4b7e4902fefb5d2a0cacca90a3d2681Dake Gu mVerticalGridView.setWindowAlignmentOffsetPercent( 285e43e9266c4b7e4902fefb5d2a0cacca90a3d2681Dake Gu VerticalGridView.WINDOW_ALIGN_OFFSET_PERCENT_DISABLED); 286e43e9266c4b7e4902fefb5d2a0cacca90a3d2681Dake Gu mVerticalGridView.setWindowAlignment(VerticalGridView.WINDOW_ALIGN_NO_EDGE); 287e43e9266c4b7e4902fefb5d2a0cacca90a3d2681Dake Gu } 288e43e9266c4b7e4902fefb5d2a0cacca90a3d2681Dake Gu } 28955c9ee4b612ffc7b4632b1e4b7b7ab4900cd47c7Craig Stout} 290