NavigationMenuPresenter.java revision 90059dad8167895396f244b357dbd2992d66d668
131a49efe2adb59e31611f6871895a3243d835127Yuichi Araki/*
231a49efe2adb59e31611f6871895a3243d835127Yuichi Araki * Copyright (C) 2015 The Android Open Source Project
331a49efe2adb59e31611f6871895a3243d835127Yuichi Araki *
431a49efe2adb59e31611f6871895a3243d835127Yuichi Araki * Licensed under the Apache License, Version 2.0 (the "License");
531a49efe2adb59e31611f6871895a3243d835127Yuichi Araki * you may not use this file except in compliance with the License.
631a49efe2adb59e31611f6871895a3243d835127Yuichi Araki * You may obtain a copy of the License at
731a49efe2adb59e31611f6871895a3243d835127Yuichi Araki *
831a49efe2adb59e31611f6871895a3243d835127Yuichi Araki *      http://www.apache.org/licenses/LICENSE-2.0
931a49efe2adb59e31611f6871895a3243d835127Yuichi Araki *
1031a49efe2adb59e31611f6871895a3243d835127Yuichi Araki * Unless required by applicable law or agreed to in writing, software
1131a49efe2adb59e31611f6871895a3243d835127Yuichi Araki * distributed under the License is distributed on an "AS IS" BASIS,
1231a49efe2adb59e31611f6871895a3243d835127Yuichi Araki * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
1331a49efe2adb59e31611f6871895a3243d835127Yuichi Araki * See the License for the specific language governing permissions and
1431a49efe2adb59e31611f6871895a3243d835127Yuichi Araki * limitations under the License.
1531a49efe2adb59e31611f6871895a3243d835127Yuichi Araki */
1631a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
1731a49efe2adb59e31611f6871895a3243d835127Yuichi Arakipackage android.support.design.internal;
1831a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
1931a49efe2adb59e31611f6871895a3243d835127Yuichi Arakiimport android.content.Context;
20d3ee2c7d22c0cb204ea9077fa9e64511266d6799Yuichi Arakiimport android.content.res.ColorStateList;
2160abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Arakiimport android.content.res.Resources;
22a63940ca14cd3ad9620e94f709930bb968525c57Chris Banesimport android.graphics.drawable.Drawable;
2390059dad8167895396f244b357dbd2992d66d668Chris Banesimport android.os.Build;
2401090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Arakiimport android.os.Bundle;
2531a49efe2adb59e31611f6871895a3243d835127Yuichi Arakiimport android.os.Parcelable;
267c89489dcb1e7cc454da4375c387caf20201acb7Chris Banesimport android.support.annotation.LayoutRes;
2701090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Arakiimport android.support.annotation.NonNull;
28d3ee2c7d22c0cb204ea9077fa9e64511266d6799Yuichi Arakiimport android.support.annotation.Nullable;
29153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banesimport android.support.annotation.StyleRes;
3031a49efe2adb59e31611f6871895a3243d835127Yuichi Arakiimport android.support.design.R;
31e57300cbdb4247da95e95059ad27a348a56477c6Yuichi Arakiimport android.support.v4.view.ViewCompat;
32e57300cbdb4247da95e95059ad27a348a56477c6Yuichi Arakiimport android.support.v4.view.WindowInsetsCompat;
3366698bb15ba0f873aa1c2290cc50d6bb839a474aChris Banesimport android.support.v7.view.menu.MenuBuilder;
3466698bb15ba0f873aa1c2290cc50d6bb839a474aChris Banesimport android.support.v7.view.menu.MenuItemImpl;
3566698bb15ba0f873aa1c2290cc50d6bb839a474aChris Banesimport android.support.v7.view.menu.MenuPresenter;
3666698bb15ba0f873aa1c2290cc50d6bb839a474aChris Banesimport android.support.v7.view.menu.MenuView;
3766698bb15ba0f873aa1c2290cc50d6bb839a474aChris Banesimport android.support.v7.view.menu.SubMenuBuilder;
3864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Arakiimport android.support.v7.widget.RecyclerView;
3901090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Arakiimport android.util.SparseArray;
4031a49efe2adb59e31611f6871895a3243d835127Yuichi Arakiimport android.view.LayoutInflater;
4101090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Arakiimport android.view.SubMenu;
4231a49efe2adb59e31611f6871895a3243d835127Yuichi Arakiimport android.view.View;
4331a49efe2adb59e31611f6871895a3243d835127Yuichi Arakiimport android.view.ViewGroup;
447c89489dcb1e7cc454da4375c387caf20201acb7Chris Banesimport android.widget.LinearLayout;
4501090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Arakiimport android.widget.TextView;
4601090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki
4701090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Arakiimport java.util.ArrayList;
4831a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
4931a49efe2adb59e31611f6871895a3243d835127Yuichi Araki/**
5031a49efe2adb59e31611f6871895a3243d835127Yuichi Araki * @hide
5131a49efe2adb59e31611f6871895a3243d835127Yuichi Araki */
5264bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Arakipublic class NavigationMenuPresenter implements MenuPresenter {
5331a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
5401090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki    private static final String STATE_HIERARCHY = "android:menu:list";
5576bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki    private static final String STATE_ADAPTER = "android:menu:adapter";
5601090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki
5731a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    private NavigationMenuView mMenuView;
587c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes    private LinearLayout mHeaderLayout;
5931a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
6031a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    private Callback mCallback;
6131a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    private MenuBuilder mMenu;
6231a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    private int mId;
6331a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
6431a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    private NavigationMenuAdapter mAdapter;
6531a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    private LayoutInflater mLayoutInflater;
6631a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
67153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes    private int mTextAppearance;
68153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes    private boolean mTextAppearanceSet;
69a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes    private ColorStateList mTextColor;
70a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes    private ColorStateList mIconTintList;
71a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes    private Drawable mItemBackground;
72d3ee2c7d22c0cb204ea9077fa9e64511266d6799Yuichi Araki
7301090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki    /**
7401090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki     * Padding to be inserted at the top of the list to avoid the first menu item
7501090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki     * from being placed underneath the status bar.
7601090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki     */
7701090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki    private int mPaddingTopDefault;
7801090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki
7960abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki    /**
8060abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki     * Padding for separators between items
8160abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki     */
8260abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki    private int mPaddingSeparator;
8360abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki
8431a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    @Override
8531a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    public void initForMenu(Context context, MenuBuilder menu) {
8631a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        mLayoutInflater = LayoutInflater.from(context);
8731a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        mMenu = menu;
8860abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki        Resources res = context.getResources();
8960abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki        mPaddingSeparator = res.getDimensionPixelOffset(
90a577676a64e5353b8ec927117151aa6be84adf66Chris Banes                R.dimen.design_navigation_separator_vertical_padding);
9131a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    }
9231a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
9331a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    @Override
9431a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    public MenuView getMenuView(ViewGroup root) {
9531a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        if (mMenuView == null) {
9631a49efe2adb59e31611f6871895a3243d835127Yuichi Araki            mMenuView = (NavigationMenuView) mLayoutInflater.inflate(
97a5081dfb26b3664d97d5fe09b9b6a9c9667e0e9fYuichi Araki                    R.layout.design_navigation_menu, root, false);
9831a49efe2adb59e31611f6871895a3243d835127Yuichi Araki            if (mAdapter == null) {
9931a49efe2adb59e31611f6871895a3243d835127Yuichi Araki                mAdapter = new NavigationMenuAdapter();
10031a49efe2adb59e31611f6871895a3243d835127Yuichi Araki            }
1017c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes            mHeaderLayout = (LinearLayout) mLayoutInflater
1027c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes                    .inflate(R.layout.design_navigation_item_header,
1037c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes                            mMenuView, false);
10431a49efe2adb59e31611f6871895a3243d835127Yuichi Araki            mMenuView.setAdapter(mAdapter);
10531a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        }
10631a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        return mMenuView;
10731a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    }
10831a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
10931a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    @Override
11031a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    public void updateMenuView(boolean cleared) {
11131a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        if (mAdapter != null) {
11264bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            mAdapter.update();
11331a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        }
11431a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    }
11531a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
11631a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    @Override
11731a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    public void setCallback(Callback cb) {
11831a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        mCallback = cb;
11931a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    }
12031a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
12131a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    @Override
12231a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    public boolean onSubMenuSelected(SubMenuBuilder subMenu) {
12331a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        return false;
12431a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    }
12531a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
12631a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    @Override
12731a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) {
12831a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        if (mCallback != null) {
12931a49efe2adb59e31611f6871895a3243d835127Yuichi Araki            mCallback.onCloseMenu(menu, allMenusAreClosing);
13031a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        }
13131a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    }
13231a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
13331a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    @Override
13431a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    public boolean flagActionItems() {
13531a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        return false;
13631a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    }
13731a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
13831a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    @Override
13931a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    public boolean expandItemActionView(MenuBuilder menu, MenuItemImpl item) {
14031a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        return false;
14131a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    }
14231a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
14331a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    @Override
14431a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    public boolean collapseItemActionView(MenuBuilder menu, MenuItemImpl item) {
14531a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        return false;
14631a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    }
14731a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
14831a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    @Override
14931a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    public int getId() {
15031a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        return mId;
15131a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    }
15231a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
15331a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    public void setId(int id) {
15431a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        mId = id;
15531a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    }
15631a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
15731a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    @Override
15831a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    public Parcelable onSaveInstanceState() {
15990059dad8167895396f244b357dbd2992d66d668Chris Banes        if (Build.VERSION.SDK_INT >= 11) {
16090059dad8167895396f244b357dbd2992d66d668Chris Banes            // API 9-10 does not support ClassLoaderCreator, therefore things can crash if they're
16190059dad8167895396f244b357dbd2992d66d668Chris Banes            // loaded via different loaders. Rather than crash we just won't save state on those
16290059dad8167895396f244b357dbd2992d66d668Chris Banes            // platforms
16390059dad8167895396f244b357dbd2992d66d668Chris Banes            final Bundle state = new Bundle();
16490059dad8167895396f244b357dbd2992d66d668Chris Banes            if (mMenuView != null) {
16590059dad8167895396f244b357dbd2992d66d668Chris Banes                SparseArray<Parcelable> hierarchy = new SparseArray<>();
16690059dad8167895396f244b357dbd2992d66d668Chris Banes                mMenuView.saveHierarchyState(hierarchy);
16790059dad8167895396f244b357dbd2992d66d668Chris Banes                state.putSparseParcelableArray(STATE_HIERARCHY, hierarchy);
16890059dad8167895396f244b357dbd2992d66d668Chris Banes            }
16990059dad8167895396f244b357dbd2992d66d668Chris Banes            if (mAdapter != null) {
17090059dad8167895396f244b357dbd2992d66d668Chris Banes                state.putBundle(STATE_ADAPTER, mAdapter.createInstanceState());
17190059dad8167895396f244b357dbd2992d66d668Chris Banes            }
17290059dad8167895396f244b357dbd2992d66d668Chris Banes            return state;
17301090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki        }
17490059dad8167895396f244b357dbd2992d66d668Chris Banes        return null;
17531a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    }
17631a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
17731a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    @Override
17890059dad8167895396f244b357dbd2992d66d668Chris Banes    public void onRestoreInstanceState(final Parcelable parcelable) {
17990059dad8167895396f244b357dbd2992d66d668Chris Banes        if (parcelable instanceof Bundle) {
18090059dad8167895396f244b357dbd2992d66d668Chris Banes            Bundle state = (Bundle) parcelable;
18190059dad8167895396f244b357dbd2992d66d668Chris Banes            SparseArray<Parcelable> hierarchy = state.getSparseParcelableArray(STATE_HIERARCHY);
18290059dad8167895396f244b357dbd2992d66d668Chris Banes            if (hierarchy != null) {
18390059dad8167895396f244b357dbd2992d66d668Chris Banes                mMenuView.restoreHierarchyState(hierarchy);
18490059dad8167895396f244b357dbd2992d66d668Chris Banes            }
18590059dad8167895396f244b357dbd2992d66d668Chris Banes            Bundle adapterState = state.getBundle(STATE_ADAPTER);
18690059dad8167895396f244b357dbd2992d66d668Chris Banes            if (adapterState != null) {
18790059dad8167895396f244b357dbd2992d66d668Chris Banes                mAdapter.restoreInstanceState(adapterState);
18890059dad8167895396f244b357dbd2992d66d668Chris Banes            }
18976bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki        }
19031a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    }
19131a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
192f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki    public void setCheckedItem(MenuItemImpl item) {
193f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki        mAdapter.setCheckedItem(item);
194f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki    }
195f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki
1967c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes    public View inflateHeaderView(@LayoutRes int res) {
1977c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes        View view = mLayoutInflater.inflate(res, mHeaderLayout, false);
1987c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes        addHeaderView(view);
1997c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes        return view;
2007c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes    }
2017c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes
20201090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki    public void addHeaderView(@NonNull View view) {
2037c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes        mHeaderLayout.addView(view);
2047c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes        // The padding on top should be cleared.
20560abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki        mMenuView.setPadding(0, 0, 0, mMenuView.getPaddingBottom());
20601090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki    }
20701090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki
2087c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes    public void removeHeaderView(@NonNull View view) {
2097c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes        mHeaderLayout.removeView(view);
2107c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes        if (mHeaderLayout.getChildCount() == 0) {
21172fa50f289d462aae5038e8dd78e134a0fffcf12Yuichi Araki            mMenuView.setPadding(0, mPaddingTopDefault, 0, mMenuView.getPaddingBottom());
21201090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki        }
21331a49efe2adb59e31611f6871895a3243d835127Yuichi Araki    }
21431a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
215cdccc4c6d5f1e40610ce4df4afeb1f99cbdb63e8Yuichi Araki    public int getHeaderCount() {
216cdccc4c6d5f1e40610ce4df4afeb1f99cbdb63e8Yuichi Araki        return mHeaderLayout.getChildCount();
217cdccc4c6d5f1e40610ce4df4afeb1f99cbdb63e8Yuichi Araki    }
218cdccc4c6d5f1e40610ce4df4afeb1f99cbdb63e8Yuichi Araki
219cdccc4c6d5f1e40610ce4df4afeb1f99cbdb63e8Yuichi Araki    public View getHeaderView(int index) {
220cdccc4c6d5f1e40610ce4df4afeb1f99cbdb63e8Yuichi Araki        return mHeaderLayout.getChildAt(index);
221cdccc4c6d5f1e40610ce4df4afeb1f99cbdb63e8Yuichi Araki    }
222cdccc4c6d5f1e40610ce4df4afeb1f99cbdb63e8Yuichi Araki
223d3ee2c7d22c0cb204ea9077fa9e64511266d6799Yuichi Araki    @Nullable
224d3ee2c7d22c0cb204ea9077fa9e64511266d6799Yuichi Araki    public ColorStateList getItemTintList() {
225a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes        return mIconTintList;
226d3ee2c7d22c0cb204ea9077fa9e64511266d6799Yuichi Araki    }
227d3ee2c7d22c0cb204ea9077fa9e64511266d6799Yuichi Araki
228a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes    public void setItemIconTintList(@Nullable ColorStateList tint) {
229a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes        mIconTintList = tint;
230153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes        updateMenuView(false);
231d3ee2c7d22c0cb204ea9077fa9e64511266d6799Yuichi Araki    }
232d3ee2c7d22c0cb204ea9077fa9e64511266d6799Yuichi Araki
233a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes    @Nullable
234a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes    public ColorStateList getItemTextColor() {
235a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes        return mTextColor;
236a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes    }
237a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes
238a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes    public void setItemTextColor(@Nullable ColorStateList textColor) {
239a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes        mTextColor = textColor;
240153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes        updateMenuView(false);
241153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes    }
242153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes
243153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes    public void setItemTextAppearance(@StyleRes int resId) {
244153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes        mTextAppearance = resId;
245153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes        mTextAppearanceSet = true;
246153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes        updateMenuView(false);
247a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes    }
248a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes
2498ea47e618ba5dad21c7b023aa998979eebcf2103Kirill Grouchnikov    @Nullable
250a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes    public Drawable getItemBackground() {
251a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes        return mItemBackground;
252d3ee2c7d22c0cb204ea9077fa9e64511266d6799Yuichi Araki    }
253d3ee2c7d22c0cb204ea9077fa9e64511266d6799Yuichi Araki
2548ea47e618ba5dad21c7b023aa998979eebcf2103Kirill Grouchnikov    public void setItemBackground(@Nullable Drawable itemBackground) {
255a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes        mItemBackground = itemBackground;
2568ea47e618ba5dad21c7b023aa998979eebcf2103Kirill Grouchnikov        updateMenuView(false);
257d3ee2c7d22c0cb204ea9077fa9e64511266d6799Yuichi Araki    }
258d3ee2c7d22c0cb204ea9077fa9e64511266d6799Yuichi Araki
259cc7a09fc0018e348027151daecf581b1d1b78f11Yuichi Araki    public void setUpdateSuspended(boolean updateSuspended) {
260cc7a09fc0018e348027151daecf581b1d1b78f11Yuichi Araki        if (mAdapter != null) {
261cc7a09fc0018e348027151daecf581b1d1b78f11Yuichi Araki            mAdapter.setUpdateSuspended(updateSuspended);
262cc7a09fc0018e348027151daecf581b1d1b78f11Yuichi Araki        }
263cc7a09fc0018e348027151daecf581b1d1b78f11Yuichi Araki    }
264cc7a09fc0018e348027151daecf581b1d1b78f11Yuichi Araki
265e57300cbdb4247da95e95059ad27a348a56477c6Yuichi Araki    public void dispatchApplyWindowInsets(WindowInsetsCompat insets) {
266e57300cbdb4247da95e95059ad27a348a56477c6Yuichi Araki        int top = insets.getSystemWindowInsetTop();
267e57300cbdb4247da95e95059ad27a348a56477c6Yuichi Araki        if (mPaddingTopDefault != top) {
268e57300cbdb4247da95e95059ad27a348a56477c6Yuichi Araki            mPaddingTopDefault = top;
26930d42dc19655e637644adc3846025027240bf0afYuichi Araki            if (mHeaderLayout.getChildCount() == 0) {
27030d42dc19655e637644adc3846025027240bf0afYuichi Araki                mMenuView.setPadding(0, mPaddingTopDefault, 0, mMenuView.getPaddingBottom());
27130d42dc19655e637644adc3846025027240bf0afYuichi Araki            }
27230d42dc19655e637644adc3846025027240bf0afYuichi Araki        }
273e57300cbdb4247da95e95059ad27a348a56477c6Yuichi Araki        ViewCompat.dispatchApplyWindowInsets(mHeaderLayout, insets);
27430d42dc19655e637644adc3846025027240bf0afYuichi Araki    }
27530d42dc19655e637644adc3846025027240bf0afYuichi Araki
27664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    private abstract static class ViewHolder extends RecyclerView.ViewHolder {
27764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
27864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        public ViewHolder(View itemView) {
27964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            super(itemView);
28064bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        }
28164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
28264bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    }
28364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
28464bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    private static class NormalViewHolder extends ViewHolder {
28564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
28664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        public NormalViewHolder(LayoutInflater inflater, ViewGroup parent,
28764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                View.OnClickListener listener) {
28864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            super(inflater.inflate(R.layout.design_navigation_item, parent, false));
28964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            itemView.setOnClickListener(listener);
29064bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        }
29164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
29264bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    }
29364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
29464bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    private static class SubheaderViewHolder extends ViewHolder {
29564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
29664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        public SubheaderViewHolder(LayoutInflater inflater, ViewGroup parent) {
29764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            super(inflater.inflate(R.layout.design_navigation_item_subheader, parent, false));
29864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        }
29964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
30064bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    }
30164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
30264bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    private static class SeparatorViewHolder extends ViewHolder {
30364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
30464bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        public SeparatorViewHolder(LayoutInflater inflater, ViewGroup parent) {
30564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            super(inflater.inflate(R.layout.design_navigation_item_separator, parent, false));
30664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        }
30764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
30864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    }
30964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
3107c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes    private static class HeaderViewHolder extends ViewHolder {
3117c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes
3127c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes        public HeaderViewHolder(View itemView) {
3137c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes            super(itemView);
3147c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes        }
3157c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes
3167c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes    }
3177c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes
31864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    /**
31964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki     * Handles click events for the menu items. The items has to be {@link NavigationMenuItemView}.
32064bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki     */
32164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    private final View.OnClickListener mOnClickListener = new View.OnClickListener() {
32264bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
32364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        @Override
32464bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        public void onClick(View v) {
32564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            NavigationMenuItemView itemView = (NavigationMenuItemView) v;
32664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            setUpdateSuspended(true);
32764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            MenuItemImpl item = itemView.getItemData();
32864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            boolean result = mMenu.performItemAction(item, NavigationMenuPresenter.this, 0);
32964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            if (item != null && item.isCheckable() && result) {
33064bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                mAdapter.setCheckedItem(item);
33164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            }
33264bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            setUpdateSuspended(false);
33364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            updateMenuView(false);
33464bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        }
33564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
33664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    };
33764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
33864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    private class NavigationMenuAdapter extends RecyclerView.Adapter<ViewHolder> {
33976bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki
340f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki        private static final String STATE_CHECKED_ITEM = "android:menu:checked";
34176bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki
34236d347c02fa8da71ccd69634484be8156fa0085bYuichi Araki        private static final String STATE_ACTION_VIEWS = "android:menu:action_views";
34301090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki        private static final int VIEW_TYPE_NORMAL = 0;
34401090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki        private static final int VIEW_TYPE_SUBHEADER = 1;
34501090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki        private static final int VIEW_TYPE_SEPARATOR = 2;
3467c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes        private static final int VIEW_TYPE_HEADER = 3;
34701090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki
3483a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes        private final ArrayList<NavigationMenuItem> mItems = new ArrayList<>();
349f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki        private MenuItemImpl mCheckedItem;
35076bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki        private boolean mUpdateSuspended;
3513a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes
3523a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes        NavigationMenuAdapter() {
3533a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes            prepareMenuItems();
3543a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes        }
3553a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes
35631a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        @Override
35731a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        public long getItemId(int position) {
35831a49efe2adb59e31611f6871895a3243d835127Yuichi Araki            return position;
35931a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        }
36031a49efe2adb59e31611f6871895a3243d835127Yuichi Araki
36131a49efe2adb59e31611f6871895a3243d835127Yuichi Araki        @Override
36264bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        public int getItemCount() {
36364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            return mItems.size();
36401090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki        }
36501090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki
36601090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki        @Override
36701090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki        public int getItemViewType(int position) {
36864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            NavigationMenuItem item = mItems.get(position);
36964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            if (item instanceof NavigationMenuSeparatorItem) {
37001090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki                return VIEW_TYPE_SEPARATOR;
3717c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes            } else if (item instanceof NavigationMenuHeaderItem) {
3727c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes                return VIEW_TYPE_HEADER;
37364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            } else if (item instanceof NavigationMenuTextItem) {
37464bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                NavigationMenuTextItem textItem = (NavigationMenuTextItem) item;
37564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                if (textItem.getMenuItem().hasSubMenu()) {
37664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    return VIEW_TYPE_SUBHEADER;
37764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                } else {
37864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    return VIEW_TYPE_NORMAL;
37964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                }
38001090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki            }
38164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            throw new RuntimeException("Unknown item type.");
38201090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki        }
38301090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki
38401090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki        @Override
38564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
38601090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki            switch (viewType) {
38701090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki                case VIEW_TYPE_NORMAL:
38864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    return new NormalViewHolder(mLayoutInflater, parent, mOnClickListener);
38964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                case VIEW_TYPE_SUBHEADER:
39064bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    return new SubheaderViewHolder(mLayoutInflater, parent);
39164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                case VIEW_TYPE_SEPARATOR:
39264bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    return new SeparatorViewHolder(mLayoutInflater, parent);
3937c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes                case VIEW_TYPE_HEADER:
3947c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes                    return new HeaderViewHolder(mHeaderLayout);
39564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            }
39664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            return null;
39764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        }
39864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
39964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        @Override
40064bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        public void onBindViewHolder(ViewHolder holder, int position) {
40164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            switch (getItemViewType(position)) {
40264bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                case VIEW_TYPE_NORMAL: {
40364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    NavigationMenuItemView itemView = (NavigationMenuItemView) holder.itemView;
404a63940ca14cd3ad9620e94f709930bb968525c57Chris Banes                    itemView.setIconTintList(mIconTintList);
405153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes                    if (mTextAppearanceSet) {
406153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes                        itemView.setTextAppearance(itemView.getContext(), mTextAppearance);
407153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes                    }
408153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes                    if (mTextColor != null) {
409153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes                        itemView.setTextColor(mTextColor);
410153fa9a03422419cd56b7d17def1ae907fc7b5cfChris Banes                    }
4111a542ba7235ec038f7ec1ac0ed65f35d29f5c952Yuichi Araki                    itemView.setBackgroundDrawable(mItemBackground != null ?
4121a542ba7235ec038f7ec1ac0ed65f35d29f5c952Yuichi Araki                            mItemBackground.getConstantState().newDrawable() : null);
41364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    NavigationMenuTextItem item = (NavigationMenuTextItem) mItems.get(position);
414f3865fbd67715b07d43da357dea742edf3bf9913Yuichi Araki                    itemView.setNeedsEmptyIcon(item.needsEmptyIcon);
41501090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki                    itemView.initialize(item.getMenuItem(), 0);
41601090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki                    break;
41764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                }
41864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                case VIEW_TYPE_SUBHEADER: {
41964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    TextView subHeader = (TextView) holder.itemView;
42064bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    NavigationMenuTextItem item = (NavigationMenuTextItem) mItems.get(position);
42101090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki                    subHeader.setText(item.getMenuItem().getTitle());
42201090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki                    break;
42364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                }
42464bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                case VIEW_TYPE_SEPARATOR: {
42564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    NavigationMenuSeparatorItem item =
42664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                            (NavigationMenuSeparatorItem) mItems.get(position);
42764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    holder.itemView.setPadding(0, item.getPaddingTop(), 0,
42860abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki                            item.getPaddingBottom());
42901090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki                    break;
43064bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                }
4317c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes                case VIEW_TYPE_HEADER: {
4327c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes                    break;
4337c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes                }
43431a49efe2adb59e31611f6871895a3243d835127Yuichi Araki            }
43501090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki
43601090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki        }
43701090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki
43801090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki        @Override
43964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        public void onViewRecycled(ViewHolder holder) {
44064bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            if (holder instanceof NormalViewHolder) {
44164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                ((NavigationMenuItemView) holder.itemView).recycle();
44264bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            }
44301090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki        }
44401090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki
44564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        public void update() {
4463a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes            prepareMenuItems();
44764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            notifyDataSetChanged();
4483a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes        }
4493a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes
4503a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes        /**
4513a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes         * Flattens the visible menu items of {@link #mMenu} into {@link #mItems},
4523a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes         * while inserting separators between items when necessary.
4533a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes         */
4543a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes        private void prepareMenuItems() {
45576bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki            if (mUpdateSuspended) {
45676bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki                return;
45776bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki            }
45842db3143bed767c8e826e69f214672be358078ebYuichi Araki            mUpdateSuspended = true;
4593a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes            mItems.clear();
4607c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes            mItems.add(new NavigationMenuHeaderItem());
46164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
4623a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes            int currentGroupId = -1;
4633a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes            int currentGroupStart = 0;
4643a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes            boolean currentGroupHasIcon = false;
4653a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes            for (int i = 0, totalSize = mMenu.getVisibleItems().size(); i < totalSize; i++) {
4663a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                MenuItemImpl item = mMenu.getVisibleItems().get(i);
467f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                if (item.isChecked()) {
468f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                    setCheckedItem(item);
469f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                }
470f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                if (item.isCheckable()) {
471f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                    item.setExclusiveCheckable(false);
472f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                }
4733a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                if (item.hasSubMenu()) {
4743a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                    SubMenu subMenu = item.getSubMenu();
4753a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                    if (subMenu.hasVisibleItems()) {
4763a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                        if (i != 0) {
47764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                            mItems.add(new NavigationMenuSeparatorItem(mPaddingSeparator, 0));
4783a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                        }
47964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                        mItems.add(new NavigationMenuTextItem(item));
4803a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                        boolean subMenuHasIcon = false;
4813a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                        int subMenuStart = mItems.size();
4823a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                        for (int j = 0, size = subMenu.size(); j < size; j++) {
483f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                            MenuItemImpl subMenuItem = (MenuItemImpl) subMenu.getItem(j);
4843a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                            if (subMenuItem.isVisible()) {
4853a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                                if (!subMenuHasIcon && subMenuItem.getIcon() != null) {
4863a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                                    subMenuHasIcon = true;
4873a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                                }
488f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                                if (subMenuItem.isCheckable()) {
489f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                                    subMenuItem.setExclusiveCheckable(false);
490f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                                }
491f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                                if (item.isChecked()) {
492f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                                    setCheckedItem(item);
493f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                                }
49464bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                                mItems.add(new NavigationMenuTextItem(subMenuItem));
4953a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                            }
4963a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                        }
4973a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                        if (subMenuHasIcon) {
4983a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                            appendTransparentIconIfMissing(subMenuStart, mItems.size());
4993a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                        }
5003a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                    }
5013a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                } else {
5023a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                    int groupId = item.getGroupId();
5033a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                    if (groupId != currentGroupId) { // first item in group
5043a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                        currentGroupStart = mItems.size();
5053a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                        currentGroupHasIcon = item.getIcon() != null;
5063a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                        if (i != 0) {
5073a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                            currentGroupStart++;
50864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                            mItems.add(new NavigationMenuSeparatorItem(
50960abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki                                    mPaddingSeparator, mPaddingSeparator));
5103a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                        }
5113a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                    } else if (!currentGroupHasIcon && item.getIcon() != null) {
5123a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                        currentGroupHasIcon = true;
5133a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                        appendTransparentIconIfMissing(currentGroupStart, mItems.size());
5143a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                    }
515f3865fbd67715b07d43da357dea742edf3bf9913Yuichi Araki                    NavigationMenuTextItem textItem = new NavigationMenuTextItem(item);
516f3865fbd67715b07d43da357dea742edf3bf9913Yuichi Araki                    textItem.needsEmptyIcon = currentGroupHasIcon;
517f3865fbd67715b07d43da357dea742edf3bf9913Yuichi Araki                    mItems.add(textItem);
5183a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                    currentGroupId = groupId;
5193a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes                }
5203a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes            }
52142db3143bed767c8e826e69f214672be358078ebYuichi Araki            mUpdateSuspended = false;
5223a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes        }
5233a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes
5243a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes        private void appendTransparentIconIfMissing(int startIndex, int endIndex) {
5253a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes            for (int i = startIndex; i < endIndex; i++) {
52664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                NavigationMenuTextItem textItem = (NavigationMenuTextItem) mItems.get(i);
527f3865fbd67715b07d43da357dea742edf3bf9913Yuichi Araki                textItem.needsEmptyIcon = true;
5283a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes            }
5293a2c9c408e240e761b043139c5d228d3ad93f6c2Chris Banes        }
53076bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki
531f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki        public void setCheckedItem(MenuItemImpl checkedItem) {
532f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki            if (mCheckedItem == checkedItem || !checkedItem.isCheckable()) {
533f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                return;
534f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki            }
535f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki            if (mCheckedItem != null) {
536f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki                mCheckedItem.setChecked(false);
537f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki            }
538f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki            mCheckedItem = checkedItem;
539f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki            checkedItem.setChecked(true);
540f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki        }
541f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki
54276bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki        public Bundle createInstanceState() {
54376bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki            Bundle state = new Bundle();
544024b36390fce843107b0916f0c3468e5a67a212aYuichi Araki            if (mCheckedItem != null) {
545024b36390fce843107b0916f0c3468e5a67a212aYuichi Araki                state.putInt(STATE_CHECKED_ITEM, mCheckedItem.getItemId());
546024b36390fce843107b0916f0c3468e5a67a212aYuichi Araki            }
54736d347c02fa8da71ccd69634484be8156fa0085bYuichi Araki            // Store the states of the action views.
54836d347c02fa8da71ccd69634484be8156fa0085bYuichi Araki            SparseArray<ParcelableSparseArray> actionViewStates = new SparseArray<>();
54936d347c02fa8da71ccd69634484be8156fa0085bYuichi Araki            for (NavigationMenuItem navigationMenuItem : mItems) {
55064bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                if (navigationMenuItem instanceof NavigationMenuTextItem) {
55164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    MenuItemImpl item = ((NavigationMenuTextItem) navigationMenuItem).getMenuItem();
55264bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    View actionView = item != null ? item.getActionView() : null;
55364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    if (actionView != null) {
55464bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                        ParcelableSparseArray container = new ParcelableSparseArray();
55564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                        actionView.saveHierarchyState(container);
55664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                        actionViewStates.put(item.getItemId(), container);
55764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    }
55836d347c02fa8da71ccd69634484be8156fa0085bYuichi Araki                }
55936d347c02fa8da71ccd69634484be8156fa0085bYuichi Araki            }
56036d347c02fa8da71ccd69634484be8156fa0085bYuichi Araki            state.putSparseParcelableArray(STATE_ACTION_VIEWS, actionViewStates);
56176bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki            return state;
56276bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki        }
56376bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki
56476bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki        public void restoreInstanceState(Bundle state) {
565f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki            int checkedItem = state.getInt(STATE_CHECKED_ITEM, 0);
566f9b8005bf607feddd9b482f817bd68c46739e4f1Yuichi Araki            if (checkedItem != 0) {
56776bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki                mUpdateSuspended = true;
56876bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki                for (NavigationMenuItem item : mItems) {
56964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    if (item instanceof NavigationMenuTextItem) {
57064bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                        MenuItemImpl menuItem = ((NavigationMenuTextItem) item).getMenuItem();
57164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                        if (menuItem != null && menuItem.getItemId() == checkedItem) {
57264bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                            setCheckedItem(menuItem);
57364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                            break;
57464bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                        }
57576bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki                    }
57676bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki                }
57776bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki                mUpdateSuspended = false;
57876bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki                prepareMenuItems();
57976bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki            }
58036d347c02fa8da71ccd69634484be8156fa0085bYuichi Araki            // Restore the states of the action views.
58136d347c02fa8da71ccd69634484be8156fa0085bYuichi Araki            SparseArray<ParcelableSparseArray> actionViewStates = state
58236d347c02fa8da71ccd69634484be8156fa0085bYuichi Araki                    .getSparseParcelableArray(STATE_ACTION_VIEWS);
58336d347c02fa8da71ccd69634484be8156fa0085bYuichi Araki            for (NavigationMenuItem navigationMenuItem : mItems) {
58464bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                if (navigationMenuItem instanceof NavigationMenuTextItem) {
58564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    MenuItemImpl item = ((NavigationMenuTextItem) navigationMenuItem).getMenuItem();
58664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    View actionView = item != null ? item.getActionView() : null;
58764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    if (actionView != null) {
58864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                        actionView.restoreHierarchyState(actionViewStates.get(item.getItemId()));
58964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki                    }
59036d347c02fa8da71ccd69634484be8156fa0085bYuichi Araki                }
59136d347c02fa8da71ccd69634484be8156fa0085bYuichi Araki            }
59276bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki        }
59376bd4d2c1173100ab73c4f27dc42dd917c48915fYuichi Araki
594cc7a09fc0018e348027151daecf581b1d1b78f11Yuichi Araki        public void setUpdateSuspended(boolean updateSuspended) {
595cc7a09fc0018e348027151daecf581b1d1b78f11Yuichi Araki            mUpdateSuspended = updateSuspended;
596cc7a09fc0018e348027151daecf581b1d1b78f11Yuichi Araki        }
597cc7a09fc0018e348027151daecf581b1d1b78f11Yuichi Araki
59801090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki    }
59901090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki
60001090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki    /**
60164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki     * Unified data model for all sorts of navigation menu items.
602e7b2c26d2ffadc94dc6ee043ab12e03201e1bf95Yuichi Araki     */
60364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    private interface NavigationMenuItem {
60464bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    }
60560abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki
60664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    /**
60764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki     * Normal or subheader items.
60864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki     */
60964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    private static class NavigationMenuTextItem implements NavigationMenuItem {
610e7b2c26d2ffadc94dc6ee043ab12e03201e1bf95Yuichi Araki
61164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        private final MenuItemImpl mMenuItem;
612e7b2c26d2ffadc94dc6ee043ab12e03201e1bf95Yuichi Araki
613f3865fbd67715b07d43da357dea742edf3bf9913Yuichi Araki        boolean needsEmptyIcon;
614f3865fbd67715b07d43da357dea742edf3bf9913Yuichi Araki
61564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        private NavigationMenuTextItem(MenuItemImpl item) {
616ca2f07c9cc83b98d73a18da7177044ee147ffb94Chris Banes            mMenuItem = item;
61760abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki        }
61860abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki
61964bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        public MenuItemImpl getMenuItem() {
62064bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            return mMenuItem;
621ca2f07c9cc83b98d73a18da7177044ee147ffb94Chris Banes        }
622ca2f07c9cc83b98d73a18da7177044ee147ffb94Chris Banes
62364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    }
62464bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
62564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    /**
62664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki     * Separator items.
62764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki     */
62864bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    private static class NavigationMenuSeparatorItem implements NavigationMenuItem {
629ca2f07c9cc83b98d73a18da7177044ee147ffb94Chris Banes
63064bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        private final int mPaddingTop;
63164bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
63264bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        private final int mPaddingBottom;
63364bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki
63464bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki        public NavigationMenuSeparatorItem(int paddingTop, int paddingBottom) {
63564bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            mPaddingTop = paddingTop;
63664bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki            mPaddingBottom = paddingBottom;
637ca2f07c9cc83b98d73a18da7177044ee147ffb94Chris Banes        }
638ca2f07c9cc83b98d73a18da7177044ee147ffb94Chris Banes
63960abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki        public int getPaddingTop() {
64060abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki            return mPaddingTop;
64160abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki        }
64260abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki
64360abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki        public int getPaddingBottom() {
64460abdeb39630c4c74a4c401e221f0c968caa26f5Yuichi Araki            return mPaddingBottom;
64501090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki        }
64601090f9556e7518c9ee206de6efe42de9003f6f5Yuichi Araki
64764bcb674cc45ab712a591d4f540d5c13404f3b83Yuichi Araki    }
6487c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes
6497c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes    /**
6507c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes     * Header (not subheader) items.
6517c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes     */
6527c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes    private static class NavigationMenuHeaderItem implements NavigationMenuItem {
6537c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes        // The actual content is hold by NavigationMenuPresenter#mHeaderLayout.
6547c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes    }
6557c89489dcb1e7cc454da4375c387caf20201acb7Chris Banes
65631a49efe2adb59e31611f6871895a3243d835127Yuichi Araki}
657