chinwag-android/app/src/main/java/com/keylesspalace/tusky/ViewMediaActivity.java
2018-07-31 21:25:25 +02:00

288 lines
11 KiB
Java

/* Copyright 2017 Andrew Dawson
*
* This file is a part of Tusky.
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along with Tusky; if not,
* see <http://www.gnu.org/licenses>. */
package com.keylesspalace.tusky;
import android.Manifest;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.app.DownloadManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.annotation.StringRes;
import android.support.design.widget.Snackbar;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.ActionBar;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.View;
import android.widget.Toast;
import com.keylesspalace.tusky.entity.Attachment;
import com.keylesspalace.tusky.fragment.ViewMediaFragment;
import com.keylesspalace.tusky.pager.AvatarImagePagerAdapter;
import com.keylesspalace.tusky.pager.ImagePagerAdapter;
import com.keylesspalace.tusky.view.ImageViewPager;
import com.keylesspalace.tusky.viewdata.AttachmentViewData;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import kotlin.collections.CollectionsKt;
import kotlin.jvm.functions.Function0;
public final class ViewMediaActivity extends BaseActivity
implements ViewMediaFragment.PhotoActionsListener {
private static final String EXTRA_ATTACHMENTS = "attachments";
private static final String EXTRA_ATTACHMENT_INDEX = "index";
private static final String EXTRA_AVATAR_URL = "avatar";
public static Intent newIntent(Context context, List<AttachmentViewData> attachments, int index) {
final Intent intent = new Intent(context, ViewMediaActivity.class);
intent.putParcelableArrayListExtra(EXTRA_ATTACHMENTS, new ArrayList<>(attachments));
intent.putExtra(EXTRA_ATTACHMENT_INDEX, index);
return intent;
}
public static Intent newAvatarIntent(Context context, String url) {
final Intent intent = new Intent(context, ViewMediaActivity.class);
intent.putExtra(EXTRA_AVATAR_URL, url);
return intent;
}
private static final int PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE = 1;
private ImageViewPager viewPager;
private View anyView;
private Toolbar toolbar;
private List<AttachmentViewData> attachments;
private boolean isToolbarVisible = true;
private final List<ToolbarVisibilityListener> toolbarVisibilityListeners = new ArrayList<>();
public interface ToolbarVisibilityListener {
void onToolbarVisiblityChanged(boolean isVisible);
}
public Function0 addToolbarVisibilityListener(ToolbarVisibilityListener listener) {
this.toolbarVisibilityListeners.add(listener);
listener.onToolbarVisiblityChanged(isToolbarVisible);
return () -> toolbarVisibilityListeners.remove(listener);
}
public boolean isToolbarVisible() {
return isToolbarVisible;
}
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_media);
supportPostponeEnterTransition();
// Obtain the views.
toolbar = findViewById(R.id.toolbar);
viewPager = findViewById(R.id.view_pager);
anyView = toolbar;
// Gather the parameters.
Intent intent = getIntent();
attachments = intent.getParcelableArrayListExtra(EXTRA_ATTACHMENTS);
int initialPosition = intent.getIntExtra(EXTRA_ATTACHMENT_INDEX, 0);
final PagerAdapter adapter;
if(attachments != null) {
List<Attachment> realAttachs =
CollectionsKt.map(attachments, AttachmentViewData::getAttachment);
// Setup the view pager.
adapter = new ImagePagerAdapter(getSupportFragmentManager(),
realAttachs, initialPosition);
} else {
String avatarUrl = intent.getStringExtra(EXTRA_AVATAR_URL);
if(avatarUrl == null) {
throw new IllegalArgumentException("attachment list or avatar url has to be set");
}
adapter = new AvatarImagePagerAdapter(getSupportFragmentManager(), avatarUrl);
}
viewPager.setAdapter(adapter);
viewPager.setCurrentItem(initialPosition);
viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset,
int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
CharSequence title = adapter.getPageTitle(position);
toolbar.setTitle(title);
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
// Setup the toolbar.
setSupportActionBar(toolbar);
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setDisplayShowHomeEnabled(true);
actionBar.setTitle(adapter.getPageTitle(initialPosition));
}
toolbar.setNavigationOnClickListener(v -> supportFinishAfterTransition());
toolbar.setOnMenuItemClickListener(item -> {
int id = item.getItemId();
switch (id) {
case R.id.action_download:
downloadImage();
break;
case R.id.action_open_status:
onOpenStatus();
break;
}
return true;
});
View decorView = getWindow().getDecorView();
int uiOptions = View.SYSTEM_UI_FLAG_LOW_PROFILE;
decorView.setSystemUiVisibility(uiOptions);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
getWindow().setStatusBarColor(Color.BLACK);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
if(attachments != null) {
getMenuInflater().inflate(R.menu.view_media_toolbar, menu);
return true;
} else {
return false;
}
}
@Override
public void onBringUp() {
supportStartPostponedEnterTransition();
}
@Override
public void onDismiss() {
supportFinishAfterTransition();
}
@Override
public void onPhotoTap() {
isToolbarVisible = !isToolbarVisible;
for (ToolbarVisibilityListener listener : toolbarVisibilityListeners) {
listener.onToolbarVisiblityChanged(isToolbarVisible);
}
final int visibility = isToolbarVisible ? View.VISIBLE : View.INVISIBLE;
int alpha = isToolbarVisible ? 1 : 0;
toolbar.animate().alpha(alpha)
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
toolbar.setVisibility(visibility);
animation.removeListener(this);
}
})
.start();
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[],
@NonNull int[] grantResults) {
switch (requestCode) {
case PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE: {
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
downloadImage();
} else {
doErrorDialog(R.string.error_media_download_permission, R.string.action_retry,
v -> downloadImage());
}
break;
}
}
}
private void doErrorDialog(@StringRes int descriptionId, @StringRes int actionId,
View.OnClickListener listener) {
if (anyView != null) {
Snackbar bar = Snackbar.make(anyView, getString(descriptionId),
Snackbar.LENGTH_SHORT);
bar.setAction(actionId, listener);
bar.show();
}
}
private void downloadImage() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M &&
ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE);
} else {
String url = attachments.get(viewPager.getCurrentItem()).getAttachment().getUrl();
Uri uri = Uri.parse(url);
String filename = new File(url).getName();
String toastText = String.format(getResources().getString(R.string.download_image),
filename);
Toast.makeText(this.getApplicationContext(), toastText, Toast.LENGTH_SHORT).show();
DownloadManager downloadManager =
(DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
DownloadManager.Request request = new DownloadManager.Request(uri);
request.allowScanningByMediaScanner();
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_PICTURES,
getString(R.string.app_name) + "/" + filename);
downloadManager.enqueue(request);
}
}
private void onOpenStatus() {
final AttachmentViewData attach = attachments.get(viewPager.getCurrentItem());
startActivityWithSlideInAnimation(ViewThreadActivity.startIntent(this, attach.getStatusId(),
attach.getStatusUrl()));
}
}