HeadersFragment.java revision 7a208cd35be79a69b1f4f36724b85ab96eb23e75
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2014 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * in compliance with the License. You may obtain a copy of the License at 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software distributed under the License 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or implied. See the License for the specific language governing permissions and limitations under 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the License. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.support.v17.leanback.app; 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 171d3165f10b12165f02b7015ac1a817c5f60e6399Neal Nguyenimport android.graphics.Color; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.drawable.Drawable; 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.drawable.GradientDrawable; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Bundle; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.support.v17.leanback.R; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.support.v17.leanback.widget.FocusHighlightHelper; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.support.v17.leanback.widget.ItemBridgeAdapter; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.support.v17.leanback.widget.PresenterSelector; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.support.v17.leanback.widget.OnItemSelectedListener; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.support.v17.leanback.widget.Row; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.support.v17.leanback.widget.RowHeaderPresenter; 281d3165f10b12165f02b7015ac1a817c5f60e6399Neal Nguyenimport android.support.v17.leanback.widget.SinglePresenterSelector; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.support.v17.leanback.widget.VerticalGridView; 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.TypedValue; 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewGroup; 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View.OnLayoutChangeListener; 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.widget.FrameLayout; 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * An internal fragment containing a list of row headers. 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class HeadersFragment extends BaseRowFragment { 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project interface OnHeaderClickedListener { 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void onHeaderClicked(); 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private OnItemSelectedListener mOnItemSelectedListener; 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private OnHeaderClickedListener mOnHeaderClickedListener; 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mHeadersEnabled = true; 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mHeadersGone = false; 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mBackgroundColor; 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mBackgroundColorSet; 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final PresenterSelector sHeaderPresenter = new SinglePresenterSelector( 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project new RowHeaderPresenter(R.layout.lb_header)); 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public HeadersFragment() { 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setPresenterSelector(sHeaderPresenter); 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOnHeaderClickedListener(OnHeaderClickedListener listener) { 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnHeaderClickedListener = listener; 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOnItemSelectedListener(OnItemSelectedListener listener) { 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnItemSelectedListener = listener; 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected VerticalGridView findGridViewFromRoot(View view) { 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (VerticalGridView) view.findViewById(R.id.browse_headers); 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onRowSelected(ViewGroup parent, View view, int position, long id) { 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnItemSelectedListener != null) { 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position >= 0) { 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Row row = (Row) getAdapter().get(position); 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnItemSelectedListener.onItemSelected(null, row); 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnItemSelectedListener.onItemSelected(null, null); 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final ItemBridgeAdapter.AdapterListener mAdapterListener = 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project new ItemBridgeAdapter.AdapterListener() { 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onCreate(ItemBridgeAdapter.ViewHolder viewHolder) { 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View headerView = viewHolder.getViewHolder().view; 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project headerView.setOnClickListener(new View.OnClickListener() { 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onClick(View v) { 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnHeaderClickedListener != null) { 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnHeaderClickedListener.onHeaderClicked(); 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }); 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project headerView.setFocusable(true); 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project headerView.setFocusableInTouchMode(true); 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mWrapper != null) { 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project viewHolder.itemView.addOnLayoutChangeListener(sLayoutChangeListener); 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project headerView.addOnLayoutChangeListener(sLayoutChangeListener); 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static OnLayoutChangeListener sLayoutChangeListener = new OnLayoutChangeListener() { 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onLayoutChange(View v, int left, int top, int right, int bottom, 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldLeft, int oldTop, int oldRight, int oldBottom) { 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v.setPivotX(0); 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v.setPivotY(v.getMeasuredHeight() / 2); 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 118 protected int getLayoutResourceId() { 119 return R.layout.lb_headers_fragment; 120 } 121 122 @Override 123 public void onViewCreated(View view, Bundle savedInstanceState) { 124 super.onViewCreated(view, savedInstanceState); 125 final VerticalGridView listView = getVerticalGridView(); 126 if (listView == null) { 127 return; 128 } 129 if (getBridgeAdapter() != null) { 130 FocusHighlightHelper.setupHeaderItemFocusHighlight(listView); 131 } 132 view.setBackgroundColor(getBackgroundColor()); 133 if (mBackgroundColorSet) { 134 updateFadingEdgeToBrandColor(); 135 } 136 updateListViewVisibility(); 137 } 138 139 private void updateListViewVisibility() { 140 final VerticalGridView listView = getVerticalGridView(); 141 if (listView != null) { 142 listView.setVisibility(mHeadersGone ? View.GONE : View.VISIBLE); 143 if (!mHeadersGone) { 144 if (mHeadersEnabled) { 145 listView.setChildrenVisibility(View.VISIBLE); 146 } else { 147 listView.setChildrenVisibility(View.INVISIBLE); 148 } 149 } 150 } 151 } 152 153 void setHeadersEnabled(boolean enabled) { 154 mHeadersEnabled = enabled; 155 updateListViewVisibility(); 156 } 157 158 void setHeadersGone(boolean gone) { 159 mHeadersGone = gone; 160 updateListViewVisibility(); 161 } 162 163 // Wrapper needed because of conflict between RecyclerView's use of alpha 164 // for ADD animations, and RowHeaderPresnter's use of alpha for selected level. 165 private final ItemBridgeAdapter.Wrapper mWrapper = new ItemBridgeAdapter.Wrapper() { 166 @Override 167 public void wrap(View wrapper, View wrapped) { 168 ((FrameLayout) wrapper).addView(wrapped); 169 } 170 171 @Override 172 public View createWrapper(View root) { 173 return new FrameLayout(root.getContext()); 174 } 175 }; 176 @Override 177 protected void updateAdapter() { 178 super.updateAdapter(); 179 ItemBridgeAdapter adapter = getBridgeAdapter(); 180 if (adapter != null) { 181 adapter.setAdapterListener(mAdapterListener); 182 adapter.setWrapper(mWrapper); 183 } 184 if (adapter != null && getVerticalGridView() != null) { 185 FocusHighlightHelper.setupHeaderItemFocusHighlight(getVerticalGridView()); 186 } 187 } 188 189 void setBackgroundColor(int color) { 190 mBackgroundColor = color; 191 mBackgroundColorSet = true; 192 193 if (getView() != null) { 194 getView().setBackgroundColor(mBackgroundColor); 195 updateFadingEdgeToBrandColor(); 196 } 197 } 198 199 private void updateFadingEdgeToBrandColor() { 200 View fadingView = getView().findViewById(R.id.fade_out_edge); 201 Drawable background = fadingView.getBackground(); 202 if (background instanceof GradientDrawable) { 203 background.mutate(); 204 ((GradientDrawable) background).setColors( 205 new int[]{Color.TRANSPARENT,mBackgroundColor}); 206 } 207 } 208 209 int getBackgroundColor() { 210 if (getActivity() == null) { 211 throw new IllegalStateException("Activity must be attached"); 212 } 213 214 if (mBackgroundColorSet) { 215 return mBackgroundColor; 216 } 217 218 TypedValue outValue = new TypedValue(); 219 getActivity().getTheme().resolveAttribute(R.attr.defaultBrandColor, outValue, true); 220 return getResources().getColor(outValue.resourceId); 221 } 222} 223