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/*
* Copyright (C) 2011 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 com.android.internal.view.menu.MenuView.ItemView;
import android.content.Context;
import android.os.Bundle;
import android.os.Parcelable;
import android.util.SparseArray;
import android.view.ContextThemeWrapper;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import java.util.ArrayList;
/**
* MenuPresenter for the classic "six-pack" icon menu.
*/
public class IconMenuPresenter extends BaseMenuPresenter {
private IconMenuItemView mMoreView;
private int mMaxItems = -1;
int mOpenSubMenuId;
SubMenuPresenterCallback mSubMenuPresenterCallback = new SubMenuPresenterCallback();
MenuDialogHelper mOpenSubMenu;
private static final String VIEWS_TAG = "android:menu:icon";
private static final String OPEN_SUBMENU_KEY = "android:menu:icon:submenu";
public IconMenuPresenter() {
super(com.android.internal.R.layout.icon_menu_layout,
com.android.internal.R.layout.icon_menu_item_layout);
}
@Override
public void initForMenu(Context context, MenuBuilder menu) {
mContext = new ContextThemeWrapper(context, com.android.internal.R.style.Theme_IconMenu);
mInflater = LayoutInflater.from(mContext);
mMenu = menu;
mMaxItems = -1;
}
@Override
public void bindItemView(MenuItemImpl item, ItemView itemView) {
final IconMenuItemView view = (IconMenuItemView) itemView;
view.setItemData(item);
view.initialize(item.getTitleForItemView(view), item.getIcon());
view.setVisibility(item.isVisible() ? View.VISIBLE : View.GONE);
view.setEnabled(view.isEnabled());
view.setLayoutParams(view.getTextAppropriateLayoutParams());
}
@Override
public boolean shouldIncludeItem(int childIndex, MenuItemImpl item) {
final ArrayList<MenuItemImpl> itemsToShow = mMenu.getNonActionItems();
boolean fits = (itemsToShow.size() == mMaxItems && childIndex < mMaxItems) ||
childIndex < mMaxItems - 1;
return fits && !item.isActionButton();
}
@Override
protected void addItemView(View itemView, int childIndex) {
final IconMenuItemView v = (IconMenuItemView) itemView;
final IconMenuView parent = (IconMenuView) mMenuView;
v.setIconMenuView(parent);
v.setItemInvoker(parent);
v.setBackgroundDrawable(parent.getItemBackgroundDrawable());
super.addItemView(itemView, childIndex);
}
@Override
public boolean onSubMenuSelected(SubMenuBuilder subMenu) {
if (!subMenu.hasVisibleItems()) return false;
// The window manager will give us a token.
MenuDialogHelper helper = new MenuDialogHelper(subMenu);
helper.setPresenterCallback(mSubMenuPresenterCallback);
helper.show(null);
mOpenSubMenu = helper;
mOpenSubMenuId = subMenu.getItem().getItemId();
super.onSubMenuSelected(subMenu);
return true;
}
@Override
public void updateMenuView(boolean cleared) {
final IconMenuView menuView = (IconMenuView) mMenuView;
if (mMaxItems < 0) mMaxItems = menuView.getMaxItems();
final ArrayList<MenuItemImpl> itemsToShow = mMenu.getNonActionItems();
final boolean needsMore = itemsToShow.size() > mMaxItems;
super.updateMenuView(cleared);
if (needsMore && (mMoreView == null || mMoreView.getParent() != menuView)) {
if (mMoreView == null) {
mMoreView = menuView.createMoreItemView();
mMoreView.setBackgroundDrawable(menuView.getItemBackgroundDrawable());
}
menuView.addView(mMoreView);
} else if (!needsMore && mMoreView != null) {
menuView.removeView(mMoreView);
}
menuView.setNumActualItemsShown(needsMore ? mMaxItems - 1 : itemsToShow.size());
}
@Override
protected boolean filterLeftoverView(ViewGroup parent, int childIndex) {
if (parent.getChildAt(childIndex) != mMoreView) {
return super.filterLeftoverView(parent, childIndex);
}
return false;
}
public int getNumActualItemsShown() {
return ((IconMenuView) mMenuView).getNumActualItemsShown();
}
public void saveHierarchyState(Bundle outState) {
SparseArray<Parcelable> viewStates = new SparseArray<Parcelable>();
if (mMenuView != null) {
((View) mMenuView).saveHierarchyState(viewStates);
}
outState.putSparseParcelableArray(VIEWS_TAG, viewStates);
}
public void restoreHierarchyState(Bundle inState) {
SparseArray<Parcelable> viewStates = inState.getSparseParcelableArray(VIEWS_TAG);
if (viewStates != null) {
((View) mMenuView).restoreHierarchyState(viewStates);
}
int subMenuId = inState.getInt(OPEN_SUBMENU_KEY, 0);
if (subMenuId > 0 && mMenu != null) {
MenuItem item = mMenu.findItem(subMenuId);
if (item != null) {
onSubMenuSelected((SubMenuBuilder) item.getSubMenu());
}
}
}
@Override
public Parcelable onSaveInstanceState() {
if (mMenuView == null) {
return null;
}
Bundle state = new Bundle();
saveHierarchyState(state);
if (mOpenSubMenuId > 0) {
state.putInt(OPEN_SUBMENU_KEY, mOpenSubMenuId);
}
return state;
}
@Override
public void onRestoreInstanceState(Parcelable state) {
restoreHierarchyState((Bundle) state);
}
class SubMenuPresenterCallback implements MenuPresenter.Callback {
@Override
public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) {
mOpenSubMenuId = 0;
mOpenSubMenu.dismiss();
mOpenSubMenu = null;
}
@Override
public boolean onOpenSubMenu(MenuBuilder subMenu) {
mOpenSubMenuId = ((SubMenuBuilder) subMenu).getItem().getItemId();
return false;
}
}
}
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