| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.android.internal.view.menu; |
| |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.BaseAdapter; |
| |
| import java.util.ArrayList; |
| |
| public class MenuAdapter extends BaseAdapter { |
| MenuBuilder mAdapterMenu; |
| |
| private int mExpandedIndex = -1; |
| |
| private boolean mForceShowIcon; |
| private final boolean mOverflowOnly; |
| private final LayoutInflater mInflater; |
| private final int mItemLayoutRes; |
| |
| public MenuAdapter(MenuBuilder menu, LayoutInflater inflater, boolean overflowOnly, |
| int itemLayoutRes) { |
| mOverflowOnly = overflowOnly; |
| mInflater = inflater; |
| mAdapterMenu = menu; |
| mItemLayoutRes = itemLayoutRes; |
| findExpandedIndex(); |
| } |
| |
| public boolean getForceShowIcon() { |
| return mForceShowIcon; |
| } |
| |
| public void setForceShowIcon(boolean forceShow) { |
| mForceShowIcon = forceShow; |
| } |
| |
| public int getCount() { |
| ArrayList<MenuItemImpl> items = mOverflowOnly ? |
| mAdapterMenu.getNonActionItems() : mAdapterMenu.getVisibleItems(); |
| if (mExpandedIndex < 0) { |
| return items.size(); |
| } |
| return items.size() - 1; |
| } |
| |
| public MenuBuilder getAdapterMenu() { |
| return mAdapterMenu; |
| } |
| |
| public MenuItemImpl getItem(int position) { |
| ArrayList<MenuItemImpl> items = mOverflowOnly ? |
| mAdapterMenu.getNonActionItems() : mAdapterMenu.getVisibleItems(); |
| if (mExpandedIndex >= 0 && position >= mExpandedIndex) { |
| position++; |
| } |
| return items.get(position); |
| } |
| |
| public long getItemId(int position) { |
| // Since a menu item's ID is optional, we'll use the position as an |
| // ID for the item in the AdapterView |
| return position; |
| } |
| |
| public View getView(int position, View convertView, ViewGroup parent) { |
| if (convertView == null) { |
| convertView = mInflater.inflate(mItemLayoutRes, parent, false); |
| } |
| |
| final int currGroupId = getItem(position).getGroupId(); |
| final int prevGroupId = |
| position - 1 >= 0 ? getItem(position - 1).getGroupId() : currGroupId; |
| // Show a divider if adjacent items are in different groups. |
| ((ListMenuItemView) convertView) |
| .setGroupDividerEnabled(mAdapterMenu.isGroupDividerEnabled() |
| && (currGroupId != prevGroupId)); |
| |
| MenuView.ItemView itemView = (MenuView.ItemView) convertView; |
| if (mForceShowIcon) { |
| ((ListMenuItemView) convertView).setForceShowIcon(true); |
| } |
| itemView.initialize(getItem(position), 0); |
| return convertView; |
| } |
| |
| void findExpandedIndex() { |
| final MenuItemImpl expandedItem = mAdapterMenu.getExpandedItem(); |
| if (expandedItem != null) { |
| final ArrayList<MenuItemImpl> items = mAdapterMenu.getNonActionItems(); |
| final int count = items.size(); |
| for (int i = 0; i < count; i++) { |
| final MenuItemImpl item = items.get(i); |
| if (item == expandedItem) { |
| mExpandedIndex = i; |
| return; |
| } |
| } |
| } |
| mExpandedIndex = -1; |
| } |
| |
| @Override |
| public void notifyDataSetChanged() { |
| findExpandedIndex(); |
| super.notifyDataSetChanged(); |
| } |
| } |