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/*
* 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.Shared.DEBUG;
import android.annotation.Nullable;
import android.graphics.drawable.Drawable;
import android.util.Log;
import android.view.View;
import com.android.documentsui.dirlist.AnimationView;
import com.android.documentsui.model.RootInfo;
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);
}
}
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.d(TAG, "New toolbar title is: " + title);
mToolbar.setTitle(title);
} else {
mBreadcrumb.show(true);
mToolbar.setTitle(null);
mBreadcrumb.postUpdate();
}
if (DEBUG) Log.d(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();
}
}
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