| /* |
| * 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 com.android.documentsui; |
| |
| import static com.android.documentsui.base.Shared.DEBUG; |
| |
| import android.annotation.Nullable; |
| import android.graphics.drawable.Drawable; |
| import android.util.Log; |
| import android.view.View; |
| |
| import com.android.documentsui.base.RootInfo; |
| import com.android.documentsui.base.State; |
| import com.android.documentsui.dirlist.AnimationView; |
| |
| import java.util.function.Consumer; |
| |
| /** |
| * A facade over the portions of the app and drawer toolbars. |
| */ |
| public class NavigationViewManager { |
| |
| private static final String TAG = "NavigationViewManager"; |
| |
| final DrawerController mDrawer; |
| final DocumentsToolbar mToolbar; |
| final State mState; |
| final NavigationViewManager.Environment mEnv; |
| final Breadcrumb mBreadcrumb; |
| |
| public NavigationViewManager( |
| DrawerController drawer, |
| DocumentsToolbar toolbar, |
| State state, |
| NavigationViewManager.Environment env, |
| Breadcrumb breadcrumb) { |
| |
| mToolbar = toolbar; |
| mDrawer = drawer; |
| mState = state; |
| mEnv = env; |
| mBreadcrumb = breadcrumb; |
| mBreadcrumb.setup(env, state, this::onNavigationItemSelected); |
| |
| mToolbar.setNavigationOnClickListener( |
| new View.OnClickListener() { |
| @Override |
| public void onClick(View v) { |
| onNavigationIconClicked(); |
| } |
| }); |
| } |
| |
| private void onNavigationIconClicked() { |
| if (mDrawer.isPresent()) { |
| mDrawer.setOpen(true, DrawerController.OPENED_HAMBURGER); |
| } |
| } |
| |
| void onNavigationItemSelected(int position) { |
| boolean changed = false; |
| while (mState.stack.size() > position + 1) { |
| changed = true; |
| mState.popDocument(); |
| } |
| if (changed) { |
| mEnv.refreshCurrentRootAndDirectory(AnimationView.ANIM_LEAVE); |
| } |
| } |
| |
| public void update() { |
| |
| // TODO: Looks to me like this block is never getting hit. |
| if (mEnv.isSearchExpanded()) { |
| mToolbar.setTitle(null); |
| mBreadcrumb.show(false); |
| return; |
| } |
| |
| mDrawer.setTitle(mEnv.getDrawerTitle()); |
| |
| mToolbar.setNavigationIcon(getActionBarIcon()); |
| mToolbar.setNavigationContentDescription(R.string.drawer_open); |
| |
| if (mState.stack.size() <= 1) { |
| mBreadcrumb.show(false); |
| String title = mEnv.getCurrentRoot().title; |
| if (DEBUG) Log.v(TAG, "New toolbar title is: " + title); |
| mToolbar.setTitle(title); |
| } else { |
| mBreadcrumb.show(true); |
| mToolbar.setTitle(null); |
| mBreadcrumb.postUpdate(); |
| } |
| |
| if (DEBUG) Log.v(TAG, "Final toolbar title is: " + mToolbar.getTitle()); |
| } |
| |
| // Hamburger if drawer is present, else sad nullness. |
| private @Nullable Drawable getActionBarIcon() { |
| if (mDrawer.isPresent()) { |
| return mToolbar.getContext().getDrawable(R.drawable.ic_hamburger); |
| } else { |
| return null; |
| } |
| } |
| |
| void revealRootsDrawer(boolean open) { |
| mDrawer.setOpen(open); |
| } |
| |
| interface Breadcrumb { |
| void setup(Environment env, State state, Consumer<Integer> listener); |
| void show(boolean visibility); |
| void postUpdate(); |
| } |
| |
| interface Environment { |
| RootInfo getCurrentRoot(); |
| String getDrawerTitle(); |
| void refreshCurrentRootAndDirectory(int animation); |
| boolean isSearchExpanded(); |
| } |
| } |