/*
* Copyright (C) 2016 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 android.support.design.internal;
import static android.support.annotation.RestrictTo.Scope.LIBRARY_GROUP;
import android.content.Context;
import android.os.Parcel;
import android.os.Parcelable;
import android.support.annotation.NonNull;
import android.support.annotation.RestrictTo;
import android.support.v7.view.menu.MenuBuilder;
import android.support.v7.view.menu.MenuItemImpl;
import android.support.v7.view.menu.MenuPresenter;
import android.support.v7.view.menu.MenuView;
import android.support.v7.view.menu.SubMenuBuilder;
import android.view.ViewGroup;
/** @hide */
@RestrictTo(LIBRARY_GROUP)
public class BottomNavigationPresenter implements MenuPresenter {
private MenuBuilder mMenu;
private BottomNavigationMenuView mMenuView;
private boolean mUpdateSuspended = false;
private int mId;
public void setBottomNavigationMenuView(BottomNavigationMenuView menuView) {
mMenuView = menuView;
}
@Override
public void initForMenu(Context context, MenuBuilder menu) {
mMenuView.initialize(mMenu);
mMenu = menu;
}
@Override
public MenuView getMenuView(ViewGroup root) {
return mMenuView;
}
@Override
public void updateMenuView(boolean cleared) {
if (mUpdateSuspended) return;
if (cleared) {
mMenuView.buildMenuView();
} else {
mMenuView.updateMenuView();
}
}
@Override
public void setCallback(Callback cb) {}
@Override
public boolean onSubMenuSelected(SubMenuBuilder subMenu) {
return false;
}
@Override
public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) {}
@Override
public boolean flagActionItems() {
return false;
}
@Override
public boolean expandItemActionView(MenuBuilder menu, MenuItemImpl item) {
return false;
}
@Override
public boolean collapseItemActionView(MenuBuilder menu, MenuItemImpl item) {
return false;
}
public void setId(int id) {
mId = id;
}
@Override
public int getId() {
return mId;
}
@Override
public Parcelable onSaveInstanceState() {
SavedState savedState = new SavedState();
savedState.selectedItemId = mMenuView.getSelectedItemId();
return savedState;
}
@Override
public void onRestoreInstanceState(Parcelable state) {
if (state instanceof SavedState) {
mMenuView.tryRestoreSelectedItemId(((SavedState) state).selectedItemId);
}
}
public void setUpdateSuspended(boolean updateSuspended) {
mUpdateSuspended = updateSuspended;
}
static class SavedState implements Parcelable {
int selectedItemId;
SavedState() {}
SavedState(Parcel in) {
selectedItemId = in.readInt();
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(@NonNull Parcel out, int flags) {
out.writeInt(selectedItemId);
}
public static final Creator<SavedState> CREATOR =
new Creator<SavedState>() {
@Override
public SavedState createFromParcel(Parcel in) {
return new SavedState(in);
}
@Override
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
}