mirror of
https://github.com/material-components/material-components-android.git
synced 2026-01-16 18:01:42 +08:00
754 lines
23 KiB
Java
754 lines
23 KiB
Java
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.android.material.internal;
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import com.google.android.material.R;
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import static androidx.annotation.RestrictTo.Scope.LIBRARY_GROUP;
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import android.content.Context;
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import android.content.res.ColorStateList;
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import android.content.res.Resources;
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import android.graphics.drawable.Drawable;
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import android.os.Bundle;
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import android.os.Parcelable;
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import androidx.annotation.Dimension;
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import androidx.annotation.LayoutRes;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.annotation.RestrictTo;
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import androidx.annotation.StyleRes;
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import androidx.core.view.ViewCompat;
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import androidx.core.view.WindowInsetsCompat;
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import androidx.core.view.accessibility.AccessibilityNodeInfoCompat;
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import androidx.core.view.accessibility.AccessibilityNodeInfoCompat.CollectionInfoCompat;
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import androidx.appcompat.view.menu.MenuBuilder;
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import androidx.appcompat.view.menu.MenuItemImpl;
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import androidx.appcompat.view.menu.MenuPresenter;
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import androidx.appcompat.view.menu.MenuView;
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import androidx.appcompat.view.menu.SubMenuBuilder;
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import androidx.recyclerview.widget.RecyclerView;
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import androidx.recyclerview.widget.RecyclerViewAccessibilityDelegate;
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import android.util.SparseArray;
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import android.view.LayoutInflater;
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import android.view.SubMenu;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.LinearLayout;
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import android.widget.TextView;
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import java.util.ArrayList;
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/** @hide */
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@RestrictTo(LIBRARY_GROUP)
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public class NavigationMenuPresenter implements MenuPresenter {
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private static final String STATE_HIERARCHY = "android:menu:list";
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private static final String STATE_ADAPTER = "android:menu:adapter";
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private static final String STATE_HEADER = "android:menu:header";
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private NavigationMenuView menuView;
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LinearLayout headerLayout;
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private Callback callback;
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MenuBuilder menu;
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private int id;
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NavigationMenuAdapter adapter;
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LayoutInflater layoutInflater;
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int textAppearance;
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boolean textAppearanceSet;
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ColorStateList textColor;
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ColorStateList iconTintList;
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Drawable itemBackground;
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int itemHorizontalPadding;
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int itemIconPadding;
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int itemIconSize;
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boolean hasCustomItemIconSize;
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private int itemMaxLines;
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/**
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* Padding to be inserted at the top of the list to avoid the first menu item from being placed
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* underneath the status bar.
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*/
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private int paddingTopDefault;
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/** Padding for separators between items */
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int paddingSeparator;
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private int overScrollMode = -1;
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@Override
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public void initForMenu(Context context, MenuBuilder menu) {
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layoutInflater = LayoutInflater.from(context);
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this.menu = menu;
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Resources res = context.getResources();
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paddingSeparator =
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res.getDimensionPixelOffset(R.dimen.design_navigation_separator_vertical_padding);
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}
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@Override
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public MenuView getMenuView(ViewGroup root) {
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if (menuView == null) {
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menuView =
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(NavigationMenuView) layoutInflater.inflate(R.layout.design_navigation_menu, root, false);
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menuView.setAccessibilityDelegateCompat(
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new NavigationMenuViewAccessibilityDelegate(menuView));
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if (adapter == null) {
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adapter = new NavigationMenuAdapter();
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}
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if (overScrollMode != -1) {
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menuView.setOverScrollMode(overScrollMode);
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}
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headerLayout =
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(LinearLayout)
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layoutInflater.inflate(R.layout.design_navigation_item_header, menuView, false);
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menuView.setAdapter(adapter);
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}
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return menuView;
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}
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@Override
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public void updateMenuView(boolean cleared) {
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if (adapter != null) {
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adapter.update();
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}
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}
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@Override
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public void setCallback(Callback cb) {
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callback = cb;
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}
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@Override
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public boolean onSubMenuSelected(SubMenuBuilder subMenu) {
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return false;
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}
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@Override
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public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) {
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if (callback != null) {
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callback.onCloseMenu(menu, allMenusAreClosing);
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}
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}
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@Override
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public boolean flagActionItems() {
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return false;
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}
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@Override
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public boolean expandItemActionView(MenuBuilder menu, MenuItemImpl item) {
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return false;
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}
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@Override
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public boolean collapseItemActionView(MenuBuilder menu, MenuItemImpl item) {
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return false;
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}
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@Override
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public int getId() {
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return id;
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}
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public void setId(int id) {
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this.id = id;
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}
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@Override
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public Parcelable onSaveInstanceState() {
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final Bundle state = new Bundle();
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if (menuView != null) {
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SparseArray<Parcelable> hierarchy = new SparseArray<>();
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menuView.saveHierarchyState(hierarchy);
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state.putSparseParcelableArray(STATE_HIERARCHY, hierarchy);
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}
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if (adapter != null) {
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state.putBundle(STATE_ADAPTER, adapter.createInstanceState());
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}
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if (headerLayout != null) {
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SparseArray<Parcelable> header = new SparseArray<>();
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headerLayout.saveHierarchyState(header);
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state.putSparseParcelableArray(STATE_HEADER, header);
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}
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return state;
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}
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@Override
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public void onRestoreInstanceState(final Parcelable parcelable) {
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if (parcelable instanceof Bundle) {
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Bundle state = (Bundle) parcelable;
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SparseArray<Parcelable> hierarchy = state.getSparseParcelableArray(STATE_HIERARCHY);
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if (hierarchy != null) {
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menuView.restoreHierarchyState(hierarchy);
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}
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Bundle adapterState = state.getBundle(STATE_ADAPTER);
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if (adapterState != null) {
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adapter.restoreInstanceState(adapterState);
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}
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SparseArray<Parcelable> header = state.getSparseParcelableArray(STATE_HEADER);
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if (header != null) {
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headerLayout.restoreHierarchyState(header);
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}
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}
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}
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public void setCheckedItem(@NonNull MenuItemImpl item) {
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adapter.setCheckedItem(item);
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}
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@Nullable
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public MenuItemImpl getCheckedItem() {
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return adapter.getCheckedItem();
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}
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public View inflateHeaderView(@LayoutRes int res) {
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View view = layoutInflater.inflate(res, headerLayout, false);
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addHeaderView(view);
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return view;
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}
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public void addHeaderView(@NonNull View view) {
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headerLayout.addView(view);
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// The padding on top should be cleared.
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menuView.setPadding(0, 0, 0, menuView.getPaddingBottom());
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}
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public void removeHeaderView(@NonNull View view) {
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headerLayout.removeView(view);
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if (headerLayout.getChildCount() == 0) {
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menuView.setPadding(0, paddingTopDefault, 0, menuView.getPaddingBottom());
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}
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}
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public int getHeaderCount() {
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return headerLayout.getChildCount();
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}
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public View getHeaderView(int index) {
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return headerLayout.getChildAt(index);
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}
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@Nullable
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public ColorStateList getItemTintList() {
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return iconTintList;
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}
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public void setItemIconTintList(@Nullable ColorStateList tint) {
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iconTintList = tint;
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updateMenuView(false);
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}
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@Nullable
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public ColorStateList getItemTextColor() {
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return textColor;
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}
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public void setItemTextColor(@Nullable ColorStateList textColor) {
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this.textColor = textColor;
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updateMenuView(false);
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}
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public void setItemTextAppearance(@StyleRes int resId) {
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textAppearance = resId;
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textAppearanceSet = true;
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updateMenuView(false);
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}
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@Nullable
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public Drawable getItemBackground() {
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return itemBackground;
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}
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public void setItemBackground(@Nullable Drawable itemBackground) {
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this.itemBackground = itemBackground;
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updateMenuView(false);
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}
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public int getItemHorizontalPadding() {
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return itemHorizontalPadding;
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}
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public void setItemHorizontalPadding(int itemHorizontalPadding) {
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this.itemHorizontalPadding = itemHorizontalPadding;
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updateMenuView(false);
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}
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public int getItemIconPadding() {
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return itemIconPadding;
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}
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public void setItemIconPadding(int itemIconPadding) {
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this.itemIconPadding = itemIconPadding;
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updateMenuView(false);
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}
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public void setItemMaxLines(int itemMaxLines) {
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this.itemMaxLines = itemMaxLines;
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updateMenuView(false);
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}
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public int getItemMaxLines() {
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return itemMaxLines;
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}
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public void setItemIconSize(@Dimension int itemIconSize) {
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if (this.itemIconSize != itemIconSize) {
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this.itemIconSize = itemIconSize;
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hasCustomItemIconSize = true;
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updateMenuView(false);
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}
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}
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public void setUpdateSuspended(boolean updateSuspended) {
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if (adapter != null) {
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adapter.setUpdateSuspended(updateSuspended);
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}
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}
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public void dispatchApplyWindowInsets(WindowInsetsCompat insets) {
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int top = insets.getSystemWindowInsetTop();
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if (paddingTopDefault != top) {
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paddingTopDefault = top;
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if (headerLayout.getChildCount() == 0) {
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menuView.setPadding(0, paddingTopDefault, 0, menuView.getPaddingBottom());
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}
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}
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ViewCompat.dispatchApplyWindowInsets(headerLayout, insets);
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}
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public void setOverScrollMode(int overScrollMode) {
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this.overScrollMode = overScrollMode;
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if (menuView != null) {
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menuView.setOverScrollMode(overScrollMode);
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}
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}
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private abstract static class ViewHolder extends RecyclerView.ViewHolder {
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public ViewHolder(View itemView) {
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super(itemView);
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}
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}
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private static class NormalViewHolder extends ViewHolder {
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public NormalViewHolder(
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LayoutInflater inflater, ViewGroup parent, View.OnClickListener listener) {
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super(inflater.inflate(R.layout.design_navigation_item, parent, false));
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itemView.setOnClickListener(listener);
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}
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}
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private static class SubheaderViewHolder extends ViewHolder {
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public SubheaderViewHolder(LayoutInflater inflater, ViewGroup parent) {
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super(inflater.inflate(R.layout.design_navigation_item_subheader, parent, false));
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}
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}
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private static class SeparatorViewHolder extends ViewHolder {
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public SeparatorViewHolder(LayoutInflater inflater, ViewGroup parent) {
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super(inflater.inflate(R.layout.design_navigation_item_separator, parent, false));
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}
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}
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private static class HeaderViewHolder extends ViewHolder {
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public HeaderViewHolder(View itemView) {
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super(itemView);
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}
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}
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/**
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* Handles click events for the menu items. The items has to be {@link NavigationMenuItemView}.
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*/
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final View.OnClickListener onClickListener =
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(view) -> {
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NavigationMenuItemView itemView = (NavigationMenuItemView) view;
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setUpdateSuspended(true);
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MenuItemImpl item = itemView.getItemData();
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boolean result = menu.performItemAction(item, NavigationMenuPresenter.this, 0);
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boolean checkStateChanged = false;
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if (item != null && item.isCheckable() && result) {
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adapter.setCheckedItem(item);
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checkStateChanged = true;
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}
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setUpdateSuspended(false);
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if (checkStateChanged) {
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updateMenuView(false);
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}
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};
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private class NavigationMenuAdapter extends RecyclerView.Adapter<ViewHolder> {
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private static final String STATE_CHECKED_ITEM = "android:menu:checked";
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private static final String STATE_ACTION_VIEWS = "android:menu:action_views";
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private static final int VIEW_TYPE_NORMAL = 0;
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private static final int VIEW_TYPE_SUBHEADER = 1;
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private static final int VIEW_TYPE_SEPARATOR = 2;
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private static final int VIEW_TYPE_HEADER = 3;
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private final ArrayList<NavigationMenuItem> items = new ArrayList<>();
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private MenuItemImpl checkedItem;
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private boolean updateSuspended;
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NavigationMenuAdapter() {
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prepareMenuItems();
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}
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@Override
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public long getItemId(int position) {
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return position;
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}
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@Override
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public int getItemCount() {
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return items.size();
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}
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@Override
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public int getItemViewType(int position) {
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NavigationMenuItem item = items.get(position);
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if (item instanceof NavigationMenuSeparatorItem) {
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return VIEW_TYPE_SEPARATOR;
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} else if (item instanceof NavigationMenuHeaderItem) {
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return VIEW_TYPE_HEADER;
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} else if (item instanceof NavigationMenuTextItem) {
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NavigationMenuTextItem textItem = (NavigationMenuTextItem) item;
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if (textItem.getMenuItem().hasSubMenu()) {
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return VIEW_TYPE_SUBHEADER;
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} else {
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return VIEW_TYPE_NORMAL;
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}
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}
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throw new RuntimeException("Unknown item type.");
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}
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@Override
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public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
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switch (viewType) {
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case VIEW_TYPE_NORMAL:
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return new NormalViewHolder(layoutInflater, parent, onClickListener);
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case VIEW_TYPE_SUBHEADER:
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return new SubheaderViewHolder(layoutInflater, parent);
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case VIEW_TYPE_SEPARATOR:
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return new SeparatorViewHolder(layoutInflater, parent);
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case VIEW_TYPE_HEADER:
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return new HeaderViewHolder(headerLayout);
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}
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return null;
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}
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@Override
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public void onBindViewHolder(ViewHolder holder, int position) {
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switch (getItemViewType(position)) {
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case VIEW_TYPE_NORMAL:
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{
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NavigationMenuItemView itemView = (NavigationMenuItemView) holder.itemView;
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itemView.setIconTintList(iconTintList);
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if (textAppearanceSet) {
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itemView.setTextAppearance(textAppearance);
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}
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if (textColor != null) {
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itemView.setTextColor(textColor);
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}
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ViewCompat.setBackground(
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itemView,
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itemBackground != null ? itemBackground.getConstantState().newDrawable() : null);
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NavigationMenuTextItem item = (NavigationMenuTextItem) items.get(position);
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itemView.setNeedsEmptyIcon(item.needsEmptyIcon);
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itemView.setHorizontalPadding(itemHorizontalPadding);
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itemView.setIconPadding(itemIconPadding);
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if (hasCustomItemIconSize) {
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itemView.setIconSize(itemIconSize);
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}
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itemView.setMaxLines(itemMaxLines);
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itemView.initialize(item.getMenuItem(), 0);
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break;
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}
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case VIEW_TYPE_SUBHEADER:
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{
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TextView subHeader = (TextView) holder.itemView;
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NavigationMenuTextItem item = (NavigationMenuTextItem) items.get(position);
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subHeader.setText(item.getMenuItem().getTitle());
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break;
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}
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case VIEW_TYPE_SEPARATOR:
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{
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NavigationMenuSeparatorItem item = (NavigationMenuSeparatorItem) items.get(position);
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holder.itemView.setPadding(0, item.getPaddingTop(), 0, item.getPaddingBottom());
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break;
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}
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case VIEW_TYPE_HEADER:
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{
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break;
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}
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}
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}
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@Override
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public void onViewRecycled(ViewHolder holder) {
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if (holder instanceof NormalViewHolder) {
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((NavigationMenuItemView) holder.itemView).recycle();
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}
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}
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public void update() {
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prepareMenuItems();
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notifyDataSetChanged();
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}
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/**
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* Flattens the visible menu items of {@link #menu} into {@link #items}, while inserting
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* separators between items when necessary.
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*/
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private void prepareMenuItems() {
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if (updateSuspended) {
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return;
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}
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updateSuspended = true;
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items.clear();
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items.add(new NavigationMenuHeaderItem());
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int currentGroupId = -1;
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int currentGroupStart = 0;
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boolean currentGroupHasIcon = false;
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for (int i = 0, totalSize = menu.getVisibleItems().size(); i < totalSize; i++) {
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MenuItemImpl item = menu.getVisibleItems().get(i);
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if (item.isChecked()) {
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setCheckedItem(item);
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}
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if (item.isCheckable()) {
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item.setExclusiveCheckable(false);
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}
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if (item.hasSubMenu()) {
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SubMenu subMenu = item.getSubMenu();
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if (subMenu.hasVisibleItems()) {
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if (i != 0) {
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items.add(new NavigationMenuSeparatorItem(paddingSeparator, 0));
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}
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items.add(new NavigationMenuTextItem(item));
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boolean subMenuHasIcon = false;
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int subMenuStart = items.size();
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for (int j = 0, size = subMenu.size(); j < size; j++) {
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MenuItemImpl subMenuItem = (MenuItemImpl) subMenu.getItem(j);
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if (subMenuItem.isVisible()) {
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if (!subMenuHasIcon && subMenuItem.getIcon() != null) {
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subMenuHasIcon = true;
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}
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if (subMenuItem.isCheckable()) {
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subMenuItem.setExclusiveCheckable(false);
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}
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if (item.isChecked()) {
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setCheckedItem(item);
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|
}
|
|
items.add(new NavigationMenuTextItem(subMenuItem));
|
|
}
|
|
}
|
|
if (subMenuHasIcon) {
|
|
appendTransparentIconIfMissing(subMenuStart, items.size());
|
|
}
|
|
}
|
|
} else {
|
|
int groupId = item.getGroupId();
|
|
if (groupId != currentGroupId) { // first item in group
|
|
currentGroupStart = items.size();
|
|
currentGroupHasIcon = item.getIcon() != null;
|
|
if (i != 0) {
|
|
currentGroupStart++;
|
|
items.add(new NavigationMenuSeparatorItem(paddingSeparator, paddingSeparator));
|
|
}
|
|
} else if (!currentGroupHasIcon && item.getIcon() != null) {
|
|
currentGroupHasIcon = true;
|
|
appendTransparentIconIfMissing(currentGroupStart, items.size());
|
|
}
|
|
NavigationMenuTextItem textItem = new NavigationMenuTextItem(item);
|
|
textItem.needsEmptyIcon = currentGroupHasIcon;
|
|
items.add(textItem);
|
|
currentGroupId = groupId;
|
|
}
|
|
}
|
|
updateSuspended = false;
|
|
}
|
|
|
|
private void appendTransparentIconIfMissing(int startIndex, int endIndex) {
|
|
for (int i = startIndex; i < endIndex; i++) {
|
|
NavigationMenuTextItem textItem = (NavigationMenuTextItem) items.get(i);
|
|
textItem.needsEmptyIcon = true;
|
|
}
|
|
}
|
|
|
|
public void setCheckedItem(MenuItemImpl checkedItem) {
|
|
if (this.checkedItem == checkedItem || !checkedItem.isCheckable()) {
|
|
return;
|
|
}
|
|
if (this.checkedItem != null) {
|
|
this.checkedItem.setChecked(false);
|
|
}
|
|
this.checkedItem = checkedItem;
|
|
checkedItem.setChecked(true);
|
|
}
|
|
|
|
public MenuItemImpl getCheckedItem() {
|
|
return checkedItem;
|
|
}
|
|
|
|
public Bundle createInstanceState() {
|
|
Bundle state = new Bundle();
|
|
if (checkedItem != null) {
|
|
state.putInt(STATE_CHECKED_ITEM, checkedItem.getItemId());
|
|
}
|
|
// Store the states of the action views.
|
|
SparseArray<ParcelableSparseArray> actionViewStates = new SparseArray<>();
|
|
for (int i = 0, size = items.size(); i < size; i++) {
|
|
NavigationMenuItem navigationMenuItem = items.get(i);
|
|
if (navigationMenuItem instanceof NavigationMenuTextItem) {
|
|
MenuItemImpl item = ((NavigationMenuTextItem) navigationMenuItem).getMenuItem();
|
|
View actionView = item != null ? item.getActionView() : null;
|
|
if (actionView != null) {
|
|
ParcelableSparseArray container = new ParcelableSparseArray();
|
|
actionView.saveHierarchyState(container);
|
|
actionViewStates.put(item.getItemId(), container);
|
|
}
|
|
}
|
|
}
|
|
state.putSparseParcelableArray(STATE_ACTION_VIEWS, actionViewStates);
|
|
return state;
|
|
}
|
|
|
|
public void restoreInstanceState(Bundle state) {
|
|
int checkedItem = state.getInt(STATE_CHECKED_ITEM, 0);
|
|
if (checkedItem != 0) {
|
|
updateSuspended = true;
|
|
for (int i = 0, size = items.size(); i < size; i++) {
|
|
NavigationMenuItem item = items.get(i);
|
|
if (item instanceof NavigationMenuTextItem) {
|
|
MenuItemImpl menuItem = ((NavigationMenuTextItem) item).getMenuItem();
|
|
if (menuItem != null && menuItem.getItemId() == checkedItem) {
|
|
setCheckedItem(menuItem);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
updateSuspended = false;
|
|
prepareMenuItems();
|
|
}
|
|
// Restore the states of the action views.
|
|
SparseArray<ParcelableSparseArray> actionViewStates =
|
|
state.getSparseParcelableArray(STATE_ACTION_VIEWS);
|
|
if (actionViewStates != null) {
|
|
for (int i = 0, size = items.size(); i < size; i++) {
|
|
NavigationMenuItem navigationMenuItem = items.get(i);
|
|
if (!(navigationMenuItem instanceof NavigationMenuTextItem)) {
|
|
continue;
|
|
}
|
|
MenuItemImpl item = ((NavigationMenuTextItem) navigationMenuItem).getMenuItem();
|
|
if (item == null) {
|
|
continue;
|
|
}
|
|
View actionView = item.getActionView();
|
|
if (actionView == null) {
|
|
continue;
|
|
}
|
|
ParcelableSparseArray container = actionViewStates.get(item.getItemId());
|
|
if (container == null) {
|
|
continue;
|
|
}
|
|
actionView.restoreHierarchyState(container);
|
|
}
|
|
}
|
|
}
|
|
|
|
public void setUpdateSuspended(boolean updateSuspended) {
|
|
this.updateSuspended = updateSuspended;
|
|
}
|
|
|
|
/** Returns the number of rows that will be used for accessibility. */
|
|
int getRowCount() {
|
|
int itemCount = headerLayout.getChildCount() == 0 ? 0 : 1;
|
|
for (int i = 0; i < adapter.getItemCount(); i++) {
|
|
if (adapter.getItemViewType(i) == VIEW_TYPE_NORMAL) {
|
|
itemCount++;
|
|
}
|
|
}
|
|
return itemCount;
|
|
}
|
|
}
|
|
|
|
/** Unified data model for all sorts of navigation menu items. */
|
|
private interface NavigationMenuItem {}
|
|
|
|
/** Normal or subheader items. */
|
|
private static class NavigationMenuTextItem implements NavigationMenuItem {
|
|
|
|
private final MenuItemImpl menuItem;
|
|
|
|
boolean needsEmptyIcon;
|
|
|
|
NavigationMenuTextItem(MenuItemImpl item) {
|
|
menuItem = item;
|
|
}
|
|
|
|
public MenuItemImpl getMenuItem() {
|
|
return menuItem;
|
|
}
|
|
}
|
|
|
|
/** Separator items. */
|
|
private static class NavigationMenuSeparatorItem implements NavigationMenuItem {
|
|
|
|
private final int paddingTop;
|
|
|
|
private final int paddingBottom;
|
|
|
|
public NavigationMenuSeparatorItem(int paddingTop, int paddingBottom) {
|
|
this.paddingTop = paddingTop;
|
|
this.paddingBottom = paddingBottom;
|
|
}
|
|
|
|
public int getPaddingTop() {
|
|
return paddingTop;
|
|
}
|
|
|
|
public int getPaddingBottom() {
|
|
return paddingBottom;
|
|
}
|
|
}
|
|
|
|
/** Header (not subheader) items. */
|
|
private static class NavigationMenuHeaderItem implements NavigationMenuItem {
|
|
NavigationMenuHeaderItem() {}
|
|
// The actual content is hold by NavigationMenuPresenter#mHeaderLayout.
|
|
}
|
|
|
|
private class NavigationMenuViewAccessibilityDelegate extends RecyclerViewAccessibilityDelegate {
|
|
|
|
NavigationMenuViewAccessibilityDelegate(@NonNull RecyclerView recyclerView) {
|
|
super(recyclerView);
|
|
}
|
|
|
|
@Override
|
|
public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
|
|
super.onInitializeAccessibilityNodeInfo(host, info);
|
|
info.setCollectionInfo(CollectionInfoCompat.obtain(adapter.getRowCount(), 0, false));
|
|
}
|
|
}
|
|
}
|