730 lines
27 KiB
Java
730 lines
27 KiB
Java
package app.grapheneos.pdfviewer;
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import android.annotation.SuppressLint;
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import android.content.Intent;
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import android.content.pm.PackageInfo;
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import android.content.res.ColorStateList;
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import android.graphics.Color;
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import android.net.Uri;
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import android.os.Build;
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import android.os.Bundle;
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import android.util.Log;
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import android.view.Gravity;
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import android.view.Menu;
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import android.view.MenuInflater;
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import android.view.MenuItem;
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import android.view.View;
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import android.view.ViewGroup;
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import android.webkit.CookieManager;
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import android.webkit.JavascriptInterface;
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import android.webkit.WebResourceRequest;
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import android.webkit.WebResourceResponse;
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import android.webkit.WebSettings;
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import android.webkit.WebView;
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import android.webkit.WebViewClient;
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import android.widget.TextView;
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import android.widget.Toast;
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import androidx.activity.result.ActivityResultLauncher;
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import androidx.activity.result.contract.ActivityResultContracts;
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import androidx.annotation.NonNull;
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import androidx.appcompat.app.AppCompatActivity;
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import androidx.core.graphics.Insets;
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import androidx.core.view.ViewCompat;
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import androidx.core.view.WindowCompat;
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import androidx.core.view.WindowInsetsCompat;
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import androidx.fragment.app.Fragment;
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import androidx.lifecycle.ViewModelProvider;
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import androidx.loader.app.LoaderManager;
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import androidx.loader.content.Loader;
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import com.google.android.material.snackbar.Snackbar;
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import app.grapheneos.pdfviewer.databinding.PdfviewerBinding;
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import app.grapheneos.pdfviewer.fragment.DocumentPropertiesFragment;
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import app.grapheneos.pdfviewer.fragment.PasswordPromptFragment;
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import app.grapheneos.pdfviewer.fragment.JumpToPageFragment;
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import app.grapheneos.pdfviewer.ktx.ViewKt;
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import app.grapheneos.pdfviewer.loader.DocumentPropertiesLoader;
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import app.grapheneos.pdfviewer.viewModel.PasswordStatus;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.FileNotFoundException;
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import java.util.HashMap;
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import java.util.List;
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public class PdfViewer extends AppCompatActivity implements LoaderManager.LoaderCallbacks<List<CharSequence>> {
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public static final String TAG = "PdfViewer";
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private static final String STATE_URI = "uri";
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private static final String STATE_PAGE = "page";
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private static final String STATE_ZOOM_RATIO = "zoomRatio";
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private static final String STATE_DOCUMENT_ORIENTATION_DEGREES = "documentOrientationDegrees";
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private static final String STATE_ENCRYPTED_DOCUMENT_PASSWORD = "encrypted_document_password";
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private static final String KEY_PROPERTIES = "properties";
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private static final int MIN_WEBVIEW_RELEASE = 89;
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private static final String CONTENT_SECURITY_POLICY =
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"default-src 'none'; " +
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"form-action 'none'; " +
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"connect-src https://localhost/placeholder.pdf; " +
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"img-src blob: 'self'; " +
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"script-src 'self'; " +
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"style-src 'self'; " +
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"frame-ancestors 'none'; " +
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"base-uri 'none'";
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private static final String PERMISSIONS_POLICY =
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"accelerometer=(), " +
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"ambient-light-sensor=(), " +
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"autoplay=(), " +
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"battery=(), " +
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"camera=(), " +
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"clipboard-read=(), " +
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"clipboard-write=(), " +
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"display-capture=(), " +
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"document-domain=(), " +
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"encrypted-media=(), " +
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"fullscreen=(), " +
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"gamepad=(), " +
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"geolocation=(), " +
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"gyroscope=(), " +
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"hid=(), " +
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"idle-detection=(), " +
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"interest-cohort=(), " +
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"magnetometer=(), " +
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"microphone=(), " +
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"midi=(), " +
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"payment=(), " +
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"picture-in-picture=(), " +
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"publickey-credentials-get=(), " +
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"screen-wake-lock=(), " +
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"serial=(), " +
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"speaker-selection=(), " +
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"sync-xhr=(), " +
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"usb=(), " +
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"xr-spatial-tracking=()";
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private static final float MIN_ZOOM_RATIO = 0.5f;
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private static final float MAX_ZOOM_RATIO = 1.5f;
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private static final int ALPHA_LOW = 130;
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private static final int ALPHA_HIGH = 255;
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private static final int STATE_LOADED = 1;
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private static final int STATE_END = 2;
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private static final int PADDING = 10;
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private Uri mUri;
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public int mPage;
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public int mNumPages;
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private float mZoomRatio = 1f;
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private int mDocumentOrientationDegrees;
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private int mDocumentState;
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private String mEncryptedDocumentPassword;
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private List<CharSequence> mDocumentProperties;
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private InputStream mInputStream;
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private PdfviewerBinding binding;
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private TextView mTextView;
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private Toast mToast;
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private Snackbar snackbar;
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private PasswordPromptFragment mPasswordPromptFragment;
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public PasswordStatus passwordValidationViewModel;
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private final ActivityResultLauncher<Intent> openDocumentLauncher = registerForActivityResult(
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new ActivityResultContracts.StartActivityForResult(), result -> {
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if (result == null) return;
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if (result.getResultCode() != RESULT_OK) return;
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Intent resultData = result.getData();
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if (resultData != null) {
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mUri = result.getData().getData();
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mPage = 1;
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mDocumentProperties = null;
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mEncryptedDocumentPassword = "";
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loadPdf();
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invalidateOptionsMenu();
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}
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});
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private final ActivityResultLauncher<Intent> saveAsLauncher = registerForActivityResult(
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new ActivityResultContracts.StartActivityForResult(), result -> {
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if (result == null) return;
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if (result.getResultCode() != RESULT_OK) return;
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Intent resultData = result.getData();
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if (resultData != null) {
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Uri path = resultData.getData();
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if (path != null) {
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saveDocumentAs(path);
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}
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}
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});
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private class Channel {
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@JavascriptInterface
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public int getPage() {
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return mPage;
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}
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@JavascriptInterface
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public float getZoomRatio() {
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return mZoomRatio;
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}
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@JavascriptInterface
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public int getDocumentOrientationDegrees() {
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return mDocumentOrientationDegrees;
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}
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@JavascriptInterface
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public void setNumPages(int numPages) {
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mNumPages = numPages;
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runOnUiThread(PdfViewer.this::invalidateOptionsMenu);
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}
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@JavascriptInterface
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public void setDocumentProperties(final String properties) {
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if (mDocumentProperties != null) {
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throw new SecurityException("mDocumentProperties not null");
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}
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final Bundle args = new Bundle();
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args.putString(KEY_PROPERTIES, properties);
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runOnUiThread(() -> LoaderManager.getInstance(PdfViewer.this).restartLoader(DocumentPropertiesLoader.ID, args, PdfViewer.this));
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}
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@JavascriptInterface
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public void showPasswordPrompt() {
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if (!getPasswordPromptFragment().isAdded()){
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getPasswordPromptFragment().show(getSupportFragmentManager(), PasswordPromptFragment.class.getName());
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}
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passwordValidationViewModel.passwordMissing();
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}
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@JavascriptInterface
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public void invalidPassword() {
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runOnUiThread(() -> passwordValidationViewModel.invalid());
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}
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@JavascriptInterface
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public void onLoaded() {
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passwordValidationViewModel.validated();
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if (getPasswordPromptFragment().isAdded()) {
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getPasswordPromptFragment().dismiss();
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}
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}
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@JavascriptInterface
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public String getPassword() {
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return mEncryptedDocumentPassword != null ? mEncryptedDocumentPassword : "";
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}
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}
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@Override
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@SuppressLint({"SetJavaScriptEnabled", "ClickableViewAccessibility"})
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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binding = PdfviewerBinding.inflate(getLayoutInflater());
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setContentView(binding.getRoot());
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setSupportActionBar(binding.toolbar);
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passwordValidationViewModel = new ViewModelProvider(this, ViewModelProvider.AndroidViewModelFactory.getInstance(getApplication())).get(PasswordStatus.class);
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WindowCompat.setDecorFitsSystemWindows(getWindow(), false);
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// Margins for the toolbar are needed, so that content of the toolbar
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// is not covered by a system button navigation bar when in landscape.
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ViewCompat.setOnApplyWindowInsetsListener(binding.toolbar, (v, windowInsets) -> {
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Insets insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars());
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ViewGroup.MarginLayoutParams mlp = (ViewGroup.MarginLayoutParams) v.getLayoutParams();
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mlp.leftMargin = insets.left;
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mlp.rightMargin = insets.right;
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v.setLayoutParams(mlp);
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return windowInsets;
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});
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binding.webview.setBackgroundColor(Color.TRANSPARENT);
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if (BuildConfig.DEBUG) {
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WebView.setWebContentsDebuggingEnabled(true);
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}
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final WebSettings settings = binding.webview.getSettings();
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settings.setAllowContentAccess(false);
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settings.setAllowFileAccess(false);
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settings.setCacheMode(WebSettings.LOAD_NO_CACHE);
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settings.setJavaScriptEnabled(true);
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settings.setMinimumFontSize(1);
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CookieManager.getInstance().setAcceptCookie(false);
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binding.webview.addJavascriptInterface(new Channel(), "channel");
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binding.webview.setWebViewClient(new WebViewClient() {
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private WebResourceResponse fromAsset(final String mime, final String path) {
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try {
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InputStream inputStream = getAssets().open(path.substring(1));
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return new WebResourceResponse(mime, null, inputStream);
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} catch (IOException e) {
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return null;
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}
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}
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@Override
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public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request) {
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if (!"GET".equals(request.getMethod())) {
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return null;
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}
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final Uri url = request.getUrl();
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if (!"localhost".equals(url.getHost())) {
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return null;
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}
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final String path = url.getPath();
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Log.d(TAG, "path " + path);
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if ("/placeholder.pdf".equals(path)) {
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maybeCloseInputStream();
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try {
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mInputStream = getContentResolver().openInputStream(mUri);
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} catch (FileNotFoundException ignored) {
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snackbar.setText(R.string.error_while_opening).show();
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}
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return new WebResourceResponse("application/pdf", null, mInputStream);
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}
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if ("/viewer.html".equals(path)) {
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final WebResourceResponse response = fromAsset("text/html", path);
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HashMap<String, String> headers = new HashMap<>();
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headers.put("Content-Security-Policy", CONTENT_SECURITY_POLICY);
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headers.put("Permissions-Policy", PERMISSIONS_POLICY);
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headers.put("X-Content-Type-Options", "nosniff");
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response.setResponseHeaders(headers);
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return response;
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}
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if ("/viewer.css".equals(path)) {
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return fromAsset("text/css", path);
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}
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if ("/viewer.js".equals(path) || "/pdf.js".equals(path) || "/pdf.worker.js".equals(path)) {
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return fromAsset("application/javascript", path);
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}
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return null;
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}
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@Override
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public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
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return true;
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}
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@Override
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public void onPageFinished(WebView view, String url) {
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mDocumentState = STATE_LOADED;
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invalidateOptionsMenu();
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loadPdfWithPassword(mEncryptedDocumentPassword);
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}
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});
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GestureHelper.attach(PdfViewer.this, binding.webview,
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new GestureHelper.GestureListener() {
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@Override
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public boolean onTapUp() {
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if (mUri != null) {
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binding.webview.evaluateJavascript("isTextSelected()", selection -> {
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if (!Boolean.parseBoolean(selection)) {
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if (getSupportActionBar().isShowing()) {
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hideSystemUi();
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} else {
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showSystemUi();
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}
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}
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});
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return true;
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}
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return false;
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}
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@Override
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public void onZoomIn(float value) {
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zoomIn(value, false);
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}
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@Override
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public void onZoomOut(float value) {
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zoomOut(value, false);
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}
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@Override
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public void onZoomEnd() {
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zoomEnd();
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}
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});
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mTextView = new TextView(this);
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mTextView.setBackgroundColor(Color.DKGRAY);
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mTextView.setTextColor(ColorStateList.valueOf(Color.WHITE));
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mTextView.setTextSize(18);
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mTextView.setPadding(PADDING, 0, PADDING, 0);
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// If loaders are not being initialized in onCreate(), the result will not be delivered
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// after orientation change (See FragmentHostCallback), thus initialize the
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// loader manager impl so that the result will be delivered.
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LoaderManager.getInstance(this);
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snackbar = Snackbar.make(binding.getRoot(), "", Snackbar.LENGTH_LONG);
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final Intent intent = getIntent();
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if (Intent.ACTION_VIEW.equals(intent.getAction())) {
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if (!"application/pdf".equals(intent.getType())) {
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snackbar.setText(R.string.invalid_mime_type).show();
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return;
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}
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mUri = intent.getData();
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mPage = 1;
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}
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if (savedInstanceState != null) {
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if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
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@SuppressWarnings("deprecation")
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final Uri uri = savedInstanceState.getParcelable(STATE_URI);
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mUri = uri;
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} else {
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mUri = savedInstanceState.getParcelable(STATE_URI, Uri.class);
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}
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mPage = savedInstanceState.getInt(STATE_PAGE);
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mZoomRatio = savedInstanceState.getFloat(STATE_ZOOM_RATIO);
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mDocumentOrientationDegrees = savedInstanceState.getInt(STATE_DOCUMENT_ORIENTATION_DEGREES);
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mEncryptedDocumentPassword = savedInstanceState.getString(STATE_ENCRYPTED_DOCUMENT_PASSWORD);
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}
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if (mUri != null) {
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if ("file".equals(mUri.getScheme())) {
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snackbar.setText(R.string.legacy_file_uri).show();
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return;
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}
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loadPdf();
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}
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}
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@Override
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protected void onDestroy() {
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super.onDestroy();
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binding.webview.removeJavascriptInterface("channel");
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binding.getRoot().removeView(binding.webview);
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binding.webview.destroy();
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maybeCloseInputStream();
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}
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void maybeCloseInputStream() {
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InputStream stream = mInputStream;
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if (stream == null) {
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return;
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}
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mInputStream = null;
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try {
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stream.close();
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} catch (IOException ignored) {}
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}
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private PasswordPromptFragment getPasswordPromptFragment() {
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if (mPasswordPromptFragment == null) {
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final Fragment fragment = getSupportFragmentManager().findFragmentByTag(PasswordPromptFragment.class.getName());
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if (fragment != null) {
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mPasswordPromptFragment = (PasswordPromptFragment) fragment;
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} else {
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mPasswordPromptFragment = new PasswordPromptFragment();
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}
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}
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return mPasswordPromptFragment;
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}
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private void setToolbarTitleWithDocumentName() {
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String documentName = getCurrentDocumentName();
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if (documentName != null && !documentName.isEmpty()) {
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getSupportActionBar().setTitle(documentName);
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} else {
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getSupportActionBar().setTitle(R.string.app_name);
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}
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}
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@Override
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protected void onResume() {
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super.onResume();
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// The user could have left the activity to update the WebView
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invalidateOptionsMenu();
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if (getWebViewRelease() >= MIN_WEBVIEW_RELEASE) {
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binding.webviewOutOfDateLayout.setVisibility(View.GONE);
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binding.webview.setVisibility(View.VISIBLE);
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} else {
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binding.webview.setVisibility(View.GONE);
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binding.webviewOutOfDateMessage.setText(getString(R.string.webview_out_of_date_message, getWebViewRelease(), MIN_WEBVIEW_RELEASE));
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binding.webviewOutOfDateLayout.setVisibility(View.VISIBLE);
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}
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}
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private int getWebViewRelease() {
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PackageInfo webViewPackage = WebView.getCurrentWebViewPackage();
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String webViewVersionName = webViewPackage.versionName;
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return Integer.parseInt(webViewVersionName.substring(0, webViewVersionName.indexOf(".")));
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}
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@NonNull
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@Override
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public Loader<List<CharSequence>> onCreateLoader(int id, Bundle args) {
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return new DocumentPropertiesLoader(this, args.getString(KEY_PROPERTIES), mNumPages, mUri);
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}
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@Override
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public void onLoadFinished(@NonNull Loader<List<CharSequence>> loader, List<CharSequence> data) {
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mDocumentProperties = data;
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setToolbarTitleWithDocumentName();
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LoaderManager.getInstance(this).destroyLoader(DocumentPropertiesLoader.ID);
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}
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@Override
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public void onLoaderReset(@NonNull Loader<List<CharSequence>> loader) {
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mDocumentProperties = null;
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}
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private void loadPdf() {
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try {
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if (mInputStream != null) {
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mInputStream.close();
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}
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mInputStream = getContentResolver().openInputStream(mUri);
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} catch (IOException e) {
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snackbar.setText(R.string.error_while_opening).show();
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return;
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}
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mDocumentState = 0;
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showSystemUi();
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invalidateOptionsMenu();
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binding.webview.loadUrl("https://localhost/viewer.html");
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}
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public void loadPdfWithPassword(final String password) {
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mEncryptedDocumentPassword = password;
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binding.webview.evaluateJavascript("loadDocument()", null);
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}
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private void renderPage(final int zoom) {
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binding.webview.evaluateJavascript("onRenderPage(" + zoom + ")", null);
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}
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private void documentOrientationChanged(final int orientationDegreesOffset) {
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mDocumentOrientationDegrees = (mDocumentOrientationDegrees + orientationDegreesOffset) % 360;
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if (mDocumentOrientationDegrees < 0) {
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mDocumentOrientationDegrees += 360;
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}
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renderPage(0);
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}
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private void openDocument() {
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Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
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intent.addCategory(Intent.CATEGORY_OPENABLE);
|
|
intent.setType("application/pdf");
|
|
openDocumentLauncher.launch(intent);
|
|
}
|
|
|
|
private void shareDocument() {
|
|
if (mUri != null) {
|
|
Intent shareIntent = new Intent(Intent.ACTION_SEND);
|
|
shareIntent.setDataAndTypeAndNormalize(mUri, "application/pdf");
|
|
shareIntent.putExtra(Intent.EXTRA_STREAM, mUri);
|
|
shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
|
|
startActivity(Intent.createChooser(shareIntent, getString(R.string.action_share)));
|
|
} else {
|
|
Log.w(TAG, "Cannot share unexpected null URI");
|
|
}
|
|
}
|
|
|
|
private void zoomIn(float value, boolean end) {
|
|
if (mZoomRatio < MAX_ZOOM_RATIO) {
|
|
mZoomRatio = Math.min(mZoomRatio + value, MAX_ZOOM_RATIO);
|
|
renderPage(end ? 1 : 2);
|
|
invalidateOptionsMenu();
|
|
}
|
|
}
|
|
|
|
private void zoomOut(float value, boolean end) {
|
|
if (mZoomRatio > MIN_ZOOM_RATIO) {
|
|
mZoomRatio = Math.max(mZoomRatio - value, MIN_ZOOM_RATIO);
|
|
renderPage(end ? 1 : 2);
|
|
invalidateOptionsMenu();
|
|
}
|
|
}
|
|
|
|
private void zoomEnd() {
|
|
renderPage(1);
|
|
}
|
|
|
|
private static void enableDisableMenuItem(MenuItem item, boolean enable) {
|
|
if (enable) {
|
|
item.setEnabled(true);
|
|
item.getIcon().setAlpha(ALPHA_HIGH);
|
|
} else {
|
|
item.setEnabled(false);
|
|
item.getIcon().setAlpha(ALPHA_LOW);
|
|
}
|
|
}
|
|
|
|
public void onJumpToPageInDocument(final int selected_page) {
|
|
if (selected_page >= 1 && selected_page <= mNumPages && mPage != selected_page) {
|
|
mPage = selected_page;
|
|
renderPage(0);
|
|
showPageNumber();
|
|
invalidateOptionsMenu();
|
|
}
|
|
}
|
|
|
|
private void showSystemUi() {
|
|
ViewKt.showSystemUi(binding.getRoot(), getWindow());
|
|
getSupportActionBar().show();
|
|
}
|
|
|
|
private void hideSystemUi() {
|
|
ViewKt.hideSystemUi(binding.getRoot(), getWindow());
|
|
getSupportActionBar().hide();
|
|
}
|
|
|
|
@Override
|
|
public void onSaveInstanceState(@NonNull Bundle savedInstanceState) {
|
|
super.onSaveInstanceState(savedInstanceState);
|
|
savedInstanceState.putParcelable(STATE_URI, mUri);
|
|
savedInstanceState.putInt(STATE_PAGE, mPage);
|
|
savedInstanceState.putFloat(STATE_ZOOM_RATIO, mZoomRatio);
|
|
savedInstanceState.putInt(STATE_DOCUMENT_ORIENTATION_DEGREES, mDocumentOrientationDegrees);
|
|
savedInstanceState.putString(STATE_ENCRYPTED_DOCUMENT_PASSWORD, mEncryptedDocumentPassword);
|
|
}
|
|
|
|
private void showPageNumber() {
|
|
if (mToast != null) {
|
|
mToast.cancel();
|
|
}
|
|
mTextView.setText(String.format("%s/%s", mPage, mNumPages));
|
|
mToast = new Toast(getApplicationContext());
|
|
mToast.setGravity(Gravity.BOTTOM | Gravity.END, PADDING, PADDING);
|
|
mToast.setDuration(Toast.LENGTH_SHORT);
|
|
mToast.setView(mTextView);
|
|
mToast.show();
|
|
}
|
|
|
|
@Override
|
|
public boolean onCreateOptionsMenu(@NonNull Menu menu) {
|
|
super.onCreateOptionsMenu(menu);
|
|
MenuInflater inflater = getMenuInflater();
|
|
inflater.inflate(R.menu.pdf_viewer, menu);
|
|
return true;
|
|
}
|
|
|
|
@Override
|
|
public boolean onPrepareOptionsMenu(@NonNull Menu menu) {
|
|
final int[] ids = {R.id.action_jump_to_page, R.id.action_next, R.id.action_previous,
|
|
R.id.action_first, R.id.action_last, R.id.action_rotate_clockwise,
|
|
R.id.action_rotate_counterclockwise, R.id.action_view_document_properties,
|
|
R.id.action_share, R.id.action_save_as};
|
|
if (mDocumentState < STATE_LOADED) {
|
|
for (final int id : ids) {
|
|
final MenuItem item = menu.findItem(id);
|
|
if (item.isVisible()) {
|
|
item.setVisible(false);
|
|
}
|
|
}
|
|
} else if (mDocumentState == STATE_LOADED) {
|
|
for (final int id : ids) {
|
|
final MenuItem item = menu.findItem(id);
|
|
if (!item.isVisible()) {
|
|
item.setVisible(true);
|
|
}
|
|
}
|
|
mDocumentState = STATE_END;
|
|
}
|
|
|
|
enableDisableMenuItem(menu.findItem(R.id.action_open), getWebViewRelease() >= MIN_WEBVIEW_RELEASE);
|
|
enableDisableMenuItem(menu.findItem(R.id.action_share), mUri != null);
|
|
enableDisableMenuItem(menu.findItem(R.id.action_next), mPage < mNumPages);
|
|
enableDisableMenuItem(menu.findItem(R.id.action_previous), mPage > 1);
|
|
enableDisableMenuItem(menu.findItem(R.id.action_save_as), mUri != null);
|
|
|
|
return true;
|
|
}
|
|
|
|
@Override
|
|
public boolean onOptionsItemSelected(MenuItem item) {
|
|
final int itemId = item.getItemId();
|
|
if (itemId == R.id.action_previous) {
|
|
onJumpToPageInDocument(mPage - 1);
|
|
return true;
|
|
} else if (itemId == R.id.action_next) {
|
|
onJumpToPageInDocument(mPage + 1);
|
|
return true;
|
|
} else if (itemId == R.id.action_first) {
|
|
onJumpToPageInDocument(1);
|
|
return true;
|
|
} else if (itemId == R.id.action_last) {
|
|
onJumpToPageInDocument(mNumPages);
|
|
return true;
|
|
} else if (itemId == R.id.action_open) {
|
|
openDocument();
|
|
return true;
|
|
} else if (itemId == R.id.action_rotate_clockwise) {
|
|
documentOrientationChanged(90);
|
|
return true;
|
|
} else if (itemId == R.id.action_rotate_counterclockwise) {
|
|
documentOrientationChanged(-90);
|
|
return true;
|
|
} else if (itemId == R.id.action_view_document_properties) {
|
|
DocumentPropertiesFragment
|
|
.newInstance(mDocumentProperties)
|
|
.show(getSupportFragmentManager(), DocumentPropertiesFragment.TAG);
|
|
return true;
|
|
} else if (itemId == R.id.action_jump_to_page) {
|
|
new JumpToPageFragment()
|
|
.show(getSupportFragmentManager(), JumpToPageFragment.TAG);
|
|
return true;
|
|
} else if (itemId == R.id.action_share) {
|
|
shareDocument();
|
|
return true;
|
|
} else if (itemId == R.id.action_save_as) {
|
|
saveDocument();
|
|
}
|
|
|
|
return super.onOptionsItemSelected(item);
|
|
}
|
|
|
|
private void saveDocument() {
|
|
Intent intent = new Intent(Intent.ACTION_CREATE_DOCUMENT);
|
|
intent.addCategory(Intent.CATEGORY_OPENABLE);
|
|
intent.setType("application/pdf");
|
|
intent.putExtra(Intent.EXTRA_TITLE, getCurrentDocumentName());
|
|
saveAsLauncher.launch(intent);
|
|
}
|
|
|
|
private String getCurrentDocumentName() {
|
|
if (mDocumentProperties == null || mDocumentProperties.isEmpty()) return "";
|
|
String fileName = "";
|
|
String title = "";
|
|
for (CharSequence property : mDocumentProperties) {
|
|
if (property.toString().startsWith("File name:")) {
|
|
fileName = property.toString().replace("File name:", "");
|
|
}
|
|
if (property.toString().startsWith("Title:-")) {
|
|
title = property.toString().replace("Title:-", "");
|
|
}
|
|
}
|
|
return fileName.length() > 2 ? fileName : title;
|
|
}
|
|
|
|
private void saveDocumentAs(Uri uri) {
|
|
try {
|
|
KtUtilsKt.saveAs(this, mUri, uri);
|
|
} catch (IOException | OutOfMemoryError | IllegalArgumentException e) {
|
|
snackbar.setText(R.string.error_while_saving).show();
|
|
}
|
|
}
|
|
}
|