769 lines
26 KiB
Java
769 lines
26 KiB
Java
/*
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* Copyright (C) 2014 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 android.support.v7.widget;
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import android.content.Context;
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import android.content.res.Configuration;
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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.Parcel;
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import android.os.Parcelable;
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import android.support.v4.graphics.drawable.DrawableCompat;
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import android.support.v4.view.ActionProvider;
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import android.support.v4.view.GravityCompat;
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import android.support.v7.appcompat.R;
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import android.support.v7.internal.transition.ActionBarTransition;
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import android.support.v7.internal.view.ActionBarPolicy;
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import android.support.v7.internal.view.menu.ActionMenuItemView;
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import android.support.v7.internal.view.menu.BaseMenuPresenter;
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import android.support.v7.internal.view.menu.MenuBuilder;
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import android.support.v7.internal.view.menu.MenuItemImpl;
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import android.support.v7.internal.view.menu.MenuPopupHelper;
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import android.support.v7.internal.view.menu.MenuView;
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import android.support.v7.internal.view.menu.SubMenuBuilder;
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import android.support.v7.internal.widget.TintImageView;
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import android.util.SparseBooleanArray;
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import android.view.MenuItem;
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import android.view.SoundEffectConstants;
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import android.view.View;
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import android.view.View.MeasureSpec;
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import android.view.ViewGroup;
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import java.util.ArrayList;
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/**
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* MenuPresenter for building action menus as seen in the action bar and action modes.
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*
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* @hide
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*/
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public class ActionMenuPresenter extends BaseMenuPresenter
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implements ActionProvider.SubUiVisibilityListener {
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private static final String TAG = "ActionMenuPresenter";
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private View mOverflowButton;
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private boolean mReserveOverflow;
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private boolean mReserveOverflowSet;
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private int mWidthLimit;
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private int mActionItemWidthLimit;
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private int mMaxItems;
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private boolean mMaxItemsSet;
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private boolean mStrictWidthLimit;
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private boolean mWidthLimitSet;
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private boolean mExpandedActionViewsExclusive;
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private int mMinCellSize;
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// Group IDs that have been added as actions - used temporarily, allocated here for reuse.
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private final SparseBooleanArray mActionButtonGroups = new SparseBooleanArray();
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private View mScrapActionButtonView;
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private OverflowPopup mOverflowPopup;
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private ActionButtonSubmenu mActionButtonPopup;
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private OpenOverflowRunnable mPostedOpenRunnable;
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private ActionMenuPopupCallback mPopupCallback;
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final PopupPresenterCallback mPopupPresenterCallback = new PopupPresenterCallback();
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int mOpenSubMenuId;
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public ActionMenuPresenter(Context context) {
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super(context, R.layout.abc_action_menu_layout, R.layout.abc_action_menu_item_layout);
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}
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@Override
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public void initForMenu(Context context, MenuBuilder menu) {
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super.initForMenu(context, menu);
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final Resources res = context.getResources();
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final ActionBarPolicy abp = ActionBarPolicy.get(context);
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if (!mReserveOverflowSet) {
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mReserveOverflow = abp.showsOverflowMenuButton();
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}
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if (!mWidthLimitSet) {
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mWidthLimit = abp.getEmbeddedMenuWidthLimit();
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}
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// Measure for initial configuration
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if (!mMaxItemsSet) {
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mMaxItems = abp.getMaxActionButtons();
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}
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int width = mWidthLimit;
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if (mReserveOverflow) {
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if (mOverflowButton == null) {
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mOverflowButton = new OverflowMenuButton(mSystemContext);
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final int spec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
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mOverflowButton.measure(spec, spec);
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}
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width -= mOverflowButton.getMeasuredWidth();
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} else {
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mOverflowButton = null;
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}
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mActionItemWidthLimit = width;
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mMinCellSize = (int) (ActionMenuView.MIN_CELL_SIZE * res.getDisplayMetrics().density);
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// Drop a scrap view as it may no longer reflect the proper context/config.
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mScrapActionButtonView = null;
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}
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public void onConfigurationChanged(Configuration newConfig) {
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if (!mMaxItemsSet) {
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mMaxItems = mContext.getResources().getInteger(
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R.integer.abc_max_action_buttons);
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}
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if (mMenu != null) {
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mMenu.onItemsChanged(true);
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}
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}
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public void setWidthLimit(int width, boolean strict) {
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mWidthLimit = width;
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mStrictWidthLimit = strict;
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mWidthLimitSet = true;
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}
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public void setReserveOverflow(boolean reserveOverflow) {
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mReserveOverflow = reserveOverflow;
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mReserveOverflowSet = true;
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}
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public void setItemLimit(int itemCount) {
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mMaxItems = itemCount;
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mMaxItemsSet = true;
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}
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public void setExpandedActionViewsExclusive(boolean isExclusive) {
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mExpandedActionViewsExclusive = isExclusive;
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}
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@Override
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public MenuView getMenuView(ViewGroup root) {
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MenuView result = super.getMenuView(root);
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((ActionMenuView) result).setPresenter(this);
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return result;
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}
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@Override
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public View getItemView(final MenuItemImpl item, View convertView, ViewGroup parent) {
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View actionView = item.getActionView();
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if (actionView == null || item.hasCollapsibleActionView()) {
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actionView = super.getItemView(item, convertView, parent);
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}
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actionView.setVisibility(item.isActionViewExpanded() ? View.GONE : View.VISIBLE);
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final ActionMenuView menuParent = (ActionMenuView) parent;
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final ViewGroup.LayoutParams lp = actionView.getLayoutParams();
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if (!menuParent.checkLayoutParams(lp)) {
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actionView.setLayoutParams(menuParent.generateLayoutParams(lp));
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}
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return actionView;
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}
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@Override
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public void bindItemView(MenuItemImpl item, MenuView.ItemView itemView) {
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itemView.initialize(item, 0);
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final ActionMenuView menuView = (ActionMenuView) mMenuView;
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final ActionMenuItemView actionItemView = (ActionMenuItemView) itemView;
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actionItemView.setItemInvoker(menuView);
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if (mPopupCallback == null) {
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mPopupCallback = new ActionMenuPopupCallback();
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}
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actionItemView.setPopupCallback(mPopupCallback);
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}
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@Override
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public boolean shouldIncludeItem(int childIndex, MenuItemImpl item) {
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return item.isActionButton();
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}
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@Override
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public void updateMenuView(boolean cleared) {
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final ViewGroup menuViewParent = (ViewGroup) ((View) mMenuView).getParent();
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if (menuViewParent != null) {
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ActionBarTransition.beginDelayedTransition(menuViewParent);
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}
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super.updateMenuView(cleared);
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((View) mMenuView).requestLayout();
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if (mMenu != null) {
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final ArrayList<MenuItemImpl> actionItems = mMenu.getActionItems();
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final int count = actionItems.size();
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for (int i = 0; i < count; i++) {
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final ActionProvider provider = actionItems.get(i).getSupportActionProvider();
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if (provider != null) {
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provider.setSubUiVisibilityListener(this);
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}
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}
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}
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final ArrayList<MenuItemImpl> nonActionItems = mMenu != null ?
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mMenu.getNonActionItems() : null;
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boolean hasOverflow = false;
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if (mReserveOverflow && nonActionItems != null) {
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final int count = nonActionItems.size();
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if (count == 1) {
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hasOverflow = !nonActionItems.get(0).isActionViewExpanded();
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} else {
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hasOverflow = count > 0;
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}
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}
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if (hasOverflow) {
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if (mOverflowButton == null) {
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mOverflowButton = new OverflowMenuButton(mSystemContext);
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}
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ViewGroup parent = (ViewGroup) mOverflowButton.getParent();
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if (parent != mMenuView) {
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if (parent != null) {
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parent.removeView(mOverflowButton);
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}
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ActionMenuView menuView = (ActionMenuView) mMenuView;
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menuView.addView(mOverflowButton, menuView.generateOverflowButtonLayoutParams());
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}
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} else if (mOverflowButton != null && mOverflowButton.getParent() == mMenuView) {
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((ViewGroup) mMenuView).removeView(mOverflowButton);
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}
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((ActionMenuView) mMenuView).setOverflowReserved(mReserveOverflow);
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}
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@Override
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public boolean filterLeftoverView(ViewGroup parent, int childIndex) {
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if (parent.getChildAt(childIndex) == mOverflowButton) return false;
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return super.filterLeftoverView(parent, childIndex);
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}
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public boolean onSubMenuSelected(SubMenuBuilder subMenu) {
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if (!subMenu.hasVisibleItems()) return false;
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SubMenuBuilder topSubMenu = subMenu;
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while (topSubMenu.getParentMenu() != mMenu) {
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topSubMenu = (SubMenuBuilder) topSubMenu.getParentMenu();
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}
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View anchor = findViewForItem(topSubMenu.getItem());
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if (anchor == null) {
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if (mOverflowButton == null) return false;
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anchor = mOverflowButton;
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}
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mOpenSubMenuId = subMenu.getItem().getItemId();
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mActionButtonPopup = new ActionButtonSubmenu(mContext, subMenu);
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mActionButtonPopup.setAnchorView(anchor);
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mActionButtonPopup.show();
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super.onSubMenuSelected(subMenu);
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return true;
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}
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private View findViewForItem(MenuItem item) {
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final ViewGroup parent = (ViewGroup) mMenuView;
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if (parent == null) return null;
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final int count = parent.getChildCount();
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for (int i = 0; i < count; i++) {
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final View child = parent.getChildAt(i);
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if (child instanceof MenuView.ItemView &&
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((MenuView.ItemView) child).getItemData() == item) {
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return child;
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}
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}
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return null;
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}
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/**
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* Display the overflow menu if one is present.
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* @return true if the overflow menu was shown, false otherwise.
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*/
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public boolean showOverflowMenu() {
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if (mReserveOverflow && !isOverflowMenuShowing() && mMenu != null && mMenuView != null &&
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mPostedOpenRunnable == null && !mMenu.getNonActionItems().isEmpty()) {
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OverflowPopup popup = new OverflowPopup(mContext, mMenu, mOverflowButton, true);
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mPostedOpenRunnable = new OpenOverflowRunnable(popup);
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// Post this for later; we might still need a layout for the anchor to be right.
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((View) mMenuView).post(mPostedOpenRunnable);
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// ActionMenuPresenter uses null as a callback argument here
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// to indicate overflow is opening.
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super.onSubMenuSelected(null);
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return true;
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}
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return false;
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}
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/**
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* Hide the overflow menu if it is currently showing.
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*
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* @return true if the overflow menu was hidden, false otherwise.
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*/
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public boolean hideOverflowMenu() {
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if (mPostedOpenRunnable != null && mMenuView != null) {
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((View) mMenuView).removeCallbacks(mPostedOpenRunnable);
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mPostedOpenRunnable = null;
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return true;
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}
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MenuPopupHelper popup = mOverflowPopup;
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if (popup != null) {
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popup.dismiss();
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return true;
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}
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return false;
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}
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/**
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* Dismiss all popup menus - overflow and submenus.
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* @return true if popups were dismissed, false otherwise. (This can be because none were open.)
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*/
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public boolean dismissPopupMenus() {
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boolean result = hideOverflowMenu();
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result |= hideSubMenus();
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return result;
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}
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/**
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* Dismiss all submenu popups.
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*
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* @return true if popups were dismissed, false otherwise. (This can be because none were open.)
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*/
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public boolean hideSubMenus() {
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if (mActionButtonPopup != null) {
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mActionButtonPopup.dismiss();
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return true;
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}
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return false;
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}
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/**
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* @return true if the overflow menu is currently showing
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*/
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public boolean isOverflowMenuShowing() {
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return mOverflowPopup != null && mOverflowPopup.isShowing();
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}
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public boolean isOverflowMenuShowPending() {
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return mPostedOpenRunnable != null || isOverflowMenuShowing();
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}
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/**
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* @return true if space has been reserved in the action menu for an overflow item.
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*/
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public boolean isOverflowReserved() {
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return mReserveOverflow;
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}
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public boolean flagActionItems() {
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final ArrayList<MenuItemImpl> visibleItems = mMenu.getVisibleItems();
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final int itemsSize = visibleItems.size();
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int maxActions = mMaxItems;
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int widthLimit = mActionItemWidthLimit;
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final int querySpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
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final ViewGroup parent = (ViewGroup) mMenuView;
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int requiredItems = 0;
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int requestedItems = 0;
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int firstActionWidth = 0;
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boolean hasOverflow = false;
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for (int i = 0; i < itemsSize; i++) {
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MenuItemImpl item = visibleItems.get(i);
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if (item.requiresActionButton()) {
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requiredItems++;
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} else if (item.requestsActionButton()) {
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requestedItems++;
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} else {
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hasOverflow = true;
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}
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if (mExpandedActionViewsExclusive && item.isActionViewExpanded()) {
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// Overflow everything if we have an expanded action view and we're
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// space constrained.
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maxActions = 0;
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}
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}
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// Reserve a spot for the overflow item if needed.
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if (mReserveOverflow &&
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(hasOverflow || requiredItems + requestedItems > maxActions)) {
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maxActions--;
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}
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maxActions -= requiredItems;
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final SparseBooleanArray seenGroups = mActionButtonGroups;
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seenGroups.clear();
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int cellSize = 0;
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int cellsRemaining = 0;
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if (mStrictWidthLimit) {
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cellsRemaining = widthLimit / mMinCellSize;
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final int cellSizeRemaining = widthLimit % mMinCellSize;
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cellSize = mMinCellSize + cellSizeRemaining / cellsRemaining;
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}
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// Flag as many more requested items as will fit.
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for (int i = 0; i < itemsSize; i++) {
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MenuItemImpl item = visibleItems.get(i);
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if (item.requiresActionButton()) {
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View v = getItemView(item, mScrapActionButtonView, parent);
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if (mScrapActionButtonView == null) {
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mScrapActionButtonView = v;
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}
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if (mStrictWidthLimit) {
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cellsRemaining -= ActionMenuView.measureChildForCells(v,
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cellSize, cellsRemaining, querySpec, 0);
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} else {
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v.measure(querySpec, querySpec);
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}
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final int measuredWidth = v.getMeasuredWidth();
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widthLimit -= measuredWidth;
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if (firstActionWidth == 0) {
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firstActionWidth = measuredWidth;
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}
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final int groupId = item.getGroupId();
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if (groupId != 0) {
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seenGroups.put(groupId, true);
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}
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item.setIsActionButton(true);
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} else if (item.requestsActionButton()) {
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// Items in a group with other items that already have an action slot
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// can break the max actions rule, but not the width limit.
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final int groupId = item.getGroupId();
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final boolean inGroup = seenGroups.get(groupId);
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boolean isAction = (maxActions > 0 || inGroup) && widthLimit > 0 &&
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(!mStrictWidthLimit || cellsRemaining > 0);
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if (isAction) {
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View v = getItemView(item, mScrapActionButtonView, parent);
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if (mScrapActionButtonView == null) {
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mScrapActionButtonView = v;
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}
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if (mStrictWidthLimit) {
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final int cells = ActionMenuView.measureChildForCells(v,
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cellSize, cellsRemaining, querySpec, 0);
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cellsRemaining -= cells;
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if (cells == 0) {
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isAction = false;
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}
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} else {
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v.measure(querySpec, querySpec);
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}
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final int measuredWidth = v.getMeasuredWidth();
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widthLimit -= measuredWidth;
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if (firstActionWidth == 0) {
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firstActionWidth = measuredWidth;
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}
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if (mStrictWidthLimit) {
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isAction &= widthLimit >= 0;
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} else {
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// Did this push the entire first item past the limit?
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isAction &= widthLimit + firstActionWidth > 0;
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}
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}
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if (isAction && groupId != 0) {
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seenGroups.put(groupId, true);
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} else if (inGroup) {
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// We broke the width limit. Demote the whole group, they all overflow now.
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seenGroups.put(groupId, false);
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for (int j = 0; j < i; j++) {
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MenuItemImpl areYouMyGroupie = visibleItems.get(j);
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if (areYouMyGroupie.getGroupId() == groupId) {
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// Give back the action slot
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if (areYouMyGroupie.isActionButton()) maxActions++;
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areYouMyGroupie.setIsActionButton(false);
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}
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}
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}
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if (isAction) maxActions--;
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item.setIsActionButton(isAction);
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} else {
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// Neither requires nor requests an action button.
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item.setIsActionButton(false);
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}
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}
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return true;
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}
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@Override
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public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) {
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dismissPopupMenus();
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super.onCloseMenu(menu, allMenusAreClosing);
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}
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@Override
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public Parcelable onSaveInstanceState() {
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SavedState state = new SavedState();
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state.openSubMenuId = mOpenSubMenuId;
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return state;
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}
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@Override
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public void onRestoreInstanceState(Parcelable state) {
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SavedState saved = (SavedState) state;
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if (saved.openSubMenuId > 0) {
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MenuItem item = mMenu.findItem(saved.openSubMenuId);
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if (item != null) {
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SubMenuBuilder subMenu = (SubMenuBuilder) item.getSubMenu();
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onSubMenuSelected(subMenu);
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}
|
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}
|
|
}
|
|
|
|
@Override
|
|
public void onSubUiVisibilityChanged(boolean isVisible) {
|
|
if (isVisible) {
|
|
// Not a submenu, but treat it like one.
|
|
super.onSubMenuSelected(null);
|
|
} else {
|
|
mMenu.close(false);
|
|
}
|
|
}
|
|
|
|
public void setMenuView(ActionMenuView menuView) {
|
|
mMenuView = menuView;
|
|
menuView.initialize(mMenu);
|
|
}
|
|
|
|
private static class SavedState implements Parcelable {
|
|
public int openSubMenuId;
|
|
|
|
SavedState() {
|
|
}
|
|
|
|
SavedState(Parcel in) {
|
|
openSubMenuId = in.readInt();
|
|
}
|
|
|
|
@Override
|
|
public int describeContents() {
|
|
return 0;
|
|
}
|
|
|
|
@Override
|
|
public void writeToParcel(Parcel dest, int flags) {
|
|
dest.writeInt(openSubMenuId);
|
|
}
|
|
|
|
public static final Parcelable.Creator<SavedState> CREATOR
|
|
= new Parcelable.Creator<SavedState>() {
|
|
public SavedState createFromParcel(Parcel in) {
|
|
return new SavedState(in);
|
|
}
|
|
|
|
public SavedState[] newArray(int size) {
|
|
return new SavedState[size];
|
|
}
|
|
};
|
|
}
|
|
|
|
private class OverflowMenuButton extends TintImageView implements ActionMenuView.ActionMenuChildView {
|
|
private final float[] mTempPts = new float[2];
|
|
|
|
public OverflowMenuButton(Context context) {
|
|
super(context, null, R.attr.actionOverflowButtonStyle);
|
|
|
|
setClickable(true);
|
|
setFocusable(true);
|
|
setVisibility(VISIBLE);
|
|
setEnabled(true);
|
|
|
|
setOnTouchListener(new ListPopupWindow.ForwardingListener(this) {
|
|
@Override
|
|
public ListPopupWindow getPopup() {
|
|
if (mOverflowPopup == null) {
|
|
return null;
|
|
}
|
|
|
|
return mOverflowPopup.getPopup();
|
|
}
|
|
|
|
@Override
|
|
public boolean onForwardingStarted() {
|
|
showOverflowMenu();
|
|
return true;
|
|
}
|
|
|
|
@Override
|
|
public boolean onForwardingStopped() {
|
|
// Displaying the popup occurs asynchronously, so wait for
|
|
// the runnable to finish before deciding whether to stop
|
|
// forwarding.
|
|
if (mPostedOpenRunnable != null) {
|
|
return false;
|
|
}
|
|
|
|
hideOverflowMenu();
|
|
return true;
|
|
}
|
|
});
|
|
}
|
|
|
|
@Override
|
|
public boolean performClick() {
|
|
if (super.performClick()) {
|
|
return true;
|
|
}
|
|
|
|
playSoundEffect(SoundEffectConstants.CLICK);
|
|
showOverflowMenu();
|
|
return true;
|
|
}
|
|
|
|
@Override
|
|
public boolean needsDividerBefore() {
|
|
return false;
|
|
}
|
|
|
|
@Override
|
|
public boolean needsDividerAfter() {
|
|
return false;
|
|
}
|
|
|
|
@Override
|
|
protected boolean setFrame(int l, int t, int r, int b) {
|
|
final boolean changed = super.setFrame(l, t, r, b);
|
|
|
|
// Set up the hotspot bounds to be centered on the image.
|
|
final Drawable d = getDrawable();
|
|
final Drawable bg = getBackground();
|
|
if (d != null && bg != null) {
|
|
final int width = getWidth();
|
|
final int height = getHeight();
|
|
final int halfEdge = Math.max(width, height) / 2;
|
|
final int offsetX = getPaddingLeft() - getPaddingRight();
|
|
final int offsetY = getPaddingTop() - getPaddingBottom();
|
|
final int centerX = (width + offsetX) / 2;
|
|
final int centerY = (height + offsetY) / 2;
|
|
DrawableCompat.setHotspotBounds(bg, centerX - halfEdge, centerY - halfEdge,
|
|
centerX + halfEdge, centerY + halfEdge);
|
|
}
|
|
|
|
return changed;
|
|
}
|
|
}
|
|
|
|
private class OverflowPopup extends MenuPopupHelper {
|
|
|
|
public OverflowPopup(Context context, MenuBuilder menu, View anchorView,
|
|
boolean overflowOnly) {
|
|
super(context, menu, anchorView, overflowOnly, R.attr.actionOverflowMenuStyle);
|
|
setGravity(GravityCompat.END);
|
|
setCallback(mPopupPresenterCallback);
|
|
}
|
|
|
|
@Override
|
|
public void onDismiss() {
|
|
super.onDismiss();
|
|
mMenu.close();
|
|
mOverflowPopup = null;
|
|
}
|
|
}
|
|
|
|
private class ActionButtonSubmenu extends MenuPopupHelper {
|
|
private SubMenuBuilder mSubMenu;
|
|
|
|
public ActionButtonSubmenu(Context context, SubMenuBuilder subMenu) {
|
|
super(context, subMenu, null, false,
|
|
R.attr.actionOverflowMenuStyle);
|
|
mSubMenu = subMenu;
|
|
|
|
MenuItemImpl item = (MenuItemImpl) subMenu.getItem();
|
|
if (!item.isActionButton()) {
|
|
// Give a reasonable anchor to nested submenus.
|
|
setAnchorView(mOverflowButton == null ? (View) mMenuView : mOverflowButton);
|
|
}
|
|
|
|
setCallback(mPopupPresenterCallback);
|
|
|
|
boolean preserveIconSpacing = false;
|
|
final int count = subMenu.size();
|
|
for (int i = 0; i < count; i++) {
|
|
MenuItem childItem = subMenu.getItem(i);
|
|
if (childItem.isVisible() && childItem.getIcon() != null) {
|
|
preserveIconSpacing = true;
|
|
break;
|
|
}
|
|
}
|
|
setForceShowIcon(preserveIconSpacing);
|
|
}
|
|
|
|
@Override
|
|
public void onDismiss() {
|
|
super.onDismiss();
|
|
mActionButtonPopup = null;
|
|
mOpenSubMenuId = 0;
|
|
}
|
|
}
|
|
|
|
private class PopupPresenterCallback implements Callback {
|
|
|
|
@Override
|
|
public boolean onOpenSubMenu(MenuBuilder subMenu) {
|
|
if (subMenu == null) return false;
|
|
|
|
mOpenSubMenuId = ((SubMenuBuilder) subMenu).getItem().getItemId();
|
|
final Callback cb = getCallback();
|
|
return cb != null ? cb.onOpenSubMenu(subMenu) : false;
|
|
}
|
|
|
|
@Override
|
|
public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) {
|
|
if (menu instanceof SubMenuBuilder) {
|
|
((SubMenuBuilder) menu).getRootMenu().close(false);
|
|
}
|
|
final Callback cb = getCallback();
|
|
if (cb != null) {
|
|
cb.onCloseMenu(menu, allMenusAreClosing);
|
|
}
|
|
}
|
|
}
|
|
|
|
private class OpenOverflowRunnable implements Runnable {
|
|
private OverflowPopup mPopup;
|
|
|
|
public OpenOverflowRunnable(OverflowPopup popup) {
|
|
mPopup = popup;
|
|
}
|
|
|
|
public void run() {
|
|
mMenu.changeMenuMode();
|
|
final View menuView = (View) mMenuView;
|
|
if (menuView != null && menuView.getWindowToken() != null && mPopup.tryShow()) {
|
|
mOverflowPopup = mPopup;
|
|
}
|
|
mPostedOpenRunnable = null;
|
|
}
|
|
}
|
|
|
|
private class ActionMenuPopupCallback extends ActionMenuItemView.PopupCallback {
|
|
@Override
|
|
public ListPopupWindow getPopup() {
|
|
return mActionButtonPopup != null ? mActionButtonPopup.getPopup() : null;
|
|
}
|
|
}
|
|
}
|