/*
* 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 android.view.View.GONE;
import static android.view.View.VISIBLE;
import static com.android.documentsui.Shared.DEBUG;
import android.annotation.Nullable;
import android.graphics.drawable.Drawable;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.BaseAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import com.android.documentsui.dirlist.AnimationView;
import com.android.documentsui.model.DocumentInfo;
import com.android.documentsui.model.RootInfo;
/**
* A facade over the portions of the app and drawer toolbars.
*/
class NavigationView {
private static final String TAG = "NavigationView";
private final DrawerController mDrawer;
private final DocumentsToolbar mToolbar;
private final Spinner mBreadcrumb;
private final State mState;
private final NavigationView.Environment mEnv;
private final BreadcrumbAdapter mBreadcrumbAdapter;
private boolean mIgnoreNextNavigation;
public NavigationView(
DrawerController drawer,
DocumentsToolbar toolbar,
Spinner breadcrumb,
State state,
NavigationView.Environment env) {
mToolbar = toolbar;
mBreadcrumb = breadcrumb;
mDrawer = drawer;
mState = state;
mEnv = env;
mBreadcrumbAdapter = new BreadcrumbAdapter(mState, mEnv);
mToolbar.setNavigationOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
onNavigationIconClicked();
}
});
mBreadcrumb.setOnItemSelectedListener(
new OnItemSelectedListener() {
@Override
public void onItemSelected(
AdapterView<?> parent, View view, int position, long id) {
onBreadcrumbItemSelected(position);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {}
});
}
private void onNavigationIconClicked() {
if (mDrawer.isPresent()) {
mDrawer.setOpen(true, DrawerController.OPENED_HAMBURGER);
}
}
private void onBreadcrumbItemSelected(int position) {
if (mIgnoreNextNavigation) {
mIgnoreNextNavigation = false;
return;
}
while (mState.stack.size() > position + 1) {
mState.popDocument();
}
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.setVisibility(View.GONE);
mBreadcrumb.setAdapter(null);
return;
}
mDrawer.setTitle(mEnv.getDrawerTitle());
mToolbar.setNavigationIcon(getActionBarIcon());
mToolbar.setNavigationContentDescription(R.string.drawer_open);
if (mState.stack.size() <= 1) {
showBreadcrumb(false);
String title = mEnv.getCurrentRoot().title;
if (DEBUG) Log.d(TAG, "New toolbar title is: " + title);
mToolbar.setTitle(title);
} else {
showBreadcrumb(true);
mToolbar.setTitle(null);
mIgnoreNextNavigation = true;
mBreadcrumb.setSelection(mBreadcrumbAdapter.getCount() - 1, false);
}
if (DEBUG) Log.d(TAG, "Final toolbar title is: " + mToolbar.getTitle());
}
private void showBreadcrumb(boolean visibility) {
if (visibility) {
mBreadcrumb.setVisibility(VISIBLE);
mBreadcrumb.setAdapter(mBreadcrumbAdapter);
} else {
mBreadcrumb.setVisibility(GONE);
mBreadcrumb.setAdapter(null);
}
}
// 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);
}
/**
* Class providing toolbar with runtime access to useful activity data.
*/
static final class BreadcrumbAdapter extends BaseAdapter {
private Environment mEnv;
private State mState;
public BreadcrumbAdapter(State state, Environment env) {
mState = state;
mEnv = env;
}
@Override
public int getCount() {
return mState.stack.size();
}
@Override
public DocumentInfo getItem(int position) {
return mState.stack.get(mState.stack.size() - position - 1);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_subdir_title, parent, false);
}
final TextView title = (TextView) convertView.findViewById(android.R.id.title);
final DocumentInfo doc = getItem(position);
if (position == 0) {
final RootInfo root = mEnv.getCurrentRoot();
title.setText(root.title);
} else {
title.setText(doc.displayName);
}
return convertView;
}
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_subdir, parent, false);
}
final TextView title = (TextView) convertView.findViewById(android.R.id.title);
final DocumentInfo doc = getItem(position);
if (position == 0) {
final RootInfo root = mEnv.getCurrentRoot();
title.setText(root.title);
} else {
title.setText(doc.displayName);
}
return convertView;
}
}
interface Environment {
RootInfo getCurrentRoot();
String getDrawerTitle();
void refreshCurrentRootAndDirectory(int animation);
boolean isSearchExpanded();
}
}