Source code
package android.support.v7.internal.view.menu;
import android.content.Context;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v7.appcompat.R;
import android.support.v7.internal.view.menu.MenuPresenter.Callback;
import android.support.v7.internal.view.menu.MenuView.ItemView;
import android.util.SparseArray;
import android.view.ContextThemeWrapper;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ListAdapter;
import java.util.ArrayList;
public class ListMenuPresenter implements MenuPresenter, OnItemClickListener {
private static final String TAG = "ListMenuPresenter";
public static final String VIEWS_TAG = "android:menu:list";
MenuAdapter mAdapter;
private Callback mCallback;
Context mContext;
private int mId;
LayoutInflater mInflater;
private int mItemIndexOffset;
int mItemLayoutRes;
MenuBuilder mMenu;
ExpandedMenuView mMenuView;
int mThemeRes;
private class MenuAdapter extends BaseAdapter {
private int mExpandedIndex = -1;
public MenuAdapter() {
findExpandedIndex();
}
public int getCount() {
int count = ListMenuPresenter.this.mMenu.getNonActionItems().size() - ListMenuPresenter.this.mItemIndexOffset;
return this.mExpandedIndex < 0 ? count : count - 1;
}
public MenuItemImpl getItem(int position) {
ArrayList<MenuItemImpl> items = ListMenuPresenter.this.mMenu.getNonActionItems();
position += ListMenuPresenter.this.mItemIndexOffset;
if (this.mExpandedIndex >= 0 && position >= this.mExpandedIndex) {
position++;
}
return (MenuItemImpl) items.get(position);
}
public long getItemId(int position) {
return (long) position;
}
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = ListMenuPresenter.this.mInflater.inflate(ListMenuPresenter.this.mItemLayoutRes, parent, false);
}
((ItemView) convertView).initialize(getItem(position), 0);
return convertView;
}
void findExpandedIndex() {
MenuItemImpl expandedItem = ListMenuPresenter.this.mMenu.getExpandedItem();
if (expandedItem != null) {
ArrayList<MenuItemImpl> items = ListMenuPresenter.this.mMenu.getNonActionItems();
int count = items.size();
for (int i = 0; i < count; i++) {
if (((MenuItemImpl) items.get(i)) == expandedItem) {
this.mExpandedIndex = i;
return;
}
}
}
this.mExpandedIndex = -1;
}
public void notifyDataSetChanged() {
findExpandedIndex();
super.notifyDataSetChanged();
}
}
public ListMenuPresenter(Context context, int itemLayoutRes) {
this(itemLayoutRes, 0);
this.mContext = context;
this.mInflater = LayoutInflater.from(this.mContext);
}
public ListMenuPresenter(int itemLayoutRes, int themeRes) {
this.mItemLayoutRes = itemLayoutRes;
this.mThemeRes = themeRes;
}
public void initForMenu(Context context, MenuBuilder menu) {
if (this.mThemeRes != 0) {
this.mContext = new ContextThemeWrapper(context, this.mThemeRes);
this.mInflater = LayoutInflater.from(this.mContext);
} else if (this.mContext != null) {
this.mContext = context;
if (this.mInflater == null) {
this.mInflater = LayoutInflater.from(this.mContext);
}
}
this.mMenu = menu;
if (this.mAdapter != null) {
this.mAdapter.notifyDataSetChanged();
}
}
public MenuView getMenuView(ViewGroup root) {
if (this.mMenuView == null) {
this.mMenuView = (ExpandedMenuView) this.mInflater.inflate(R.layout.abc_expanded_menu_layout, root, false);
if (this.mAdapter == null) {
this.mAdapter = new MenuAdapter();
}
this.mMenuView.setAdapter(this.mAdapter);
this.mMenuView.setOnItemClickListener(this);
}
return this.mMenuView;
}
public ListAdapter getAdapter() {
if (this.mAdapter == null) {
this.mAdapter = new MenuAdapter();
}
return this.mAdapter;
}
public void updateMenuView(boolean cleared) {
if (this.mAdapter != null) {
this.mAdapter.notifyDataSetChanged();
}
}
public void setCallback(Callback cb) {
this.mCallback = cb;
}
public boolean onSubMenuSelected(SubMenuBuilder subMenu) {
if (!subMenu.hasVisibleItems()) {
return false;
}
new MenuDialogHelper(subMenu).show(null);
if (this.mCallback != null) {
this.mCallback.onOpenSubMenu(subMenu);
}
return true;
}
public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) {
if (this.mCallback != null) {
this.mCallback.onCloseMenu(menu, allMenusAreClosing);
}
}
int getItemIndexOffset() {
return this.mItemIndexOffset;
}
public void setItemIndexOffset(int offset) {
this.mItemIndexOffset = offset;
if (this.mMenuView != null) {
updateMenuView(false);
}
}
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
this.mMenu.performItemAction(this.mAdapter.getItem(position), this, 0);
}
public boolean flagActionItems() {
return false;
}
public boolean expandItemActionView(MenuBuilder menu, MenuItemImpl item) {
return false;
}
public boolean collapseItemActionView(MenuBuilder menu, MenuItemImpl item) {
return false;
}
public void saveHierarchyState(Bundle outState) {
SparseArray<Parcelable> viewStates = new SparseArray();
if (this.mMenuView != null) {
this.mMenuView.saveHierarchyState(viewStates);
}
outState.putSparseParcelableArray(VIEWS_TAG, viewStates);
}
public void restoreHierarchyState(Bundle inState) {
SparseArray<Parcelable> viewStates = inState.getSparseParcelableArray(VIEWS_TAG);
if (viewStates != null) {
this.mMenuView.restoreHierarchyState(viewStates);
}
}
public void setId(int id) {
this.mId = id;
}
public int getId() {
return this.mId;
}
public Parcelable onSaveInstanceState() {
if (this.mMenuView == null) {
return null;
}
Parcelable state = new Bundle();
saveHierarchyState(state);
return state;
}
public void onRestoreInstanceState(Parcelable state) {
restoreHierarchyState((Bundle) state);
}
}