fixes for downloads page

- fixes open downloads
- fix if download dialog canceled
- save image downloads

app/src/main/AndroidManifest.xml

@@ -157,6 +157,16 @@
                 <category android:name="android.intent.category.DEFAULT"/>
             </intent-filter>
         </activity>
+
+        <provider
+            android:name="android.support.v4.content.FileProvider"
+            android:authorities="${applicationId}.fileprovider"
+            android:grantUriPermissions="true"
+            android:exported="false">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/filepaths" />
+        </provider>
     </application>
 
 </manifest>

app/src/main/java/acr/browser/lightning/constant/DownloadsPage.java

@@ -23,6 +23,7 @@ import acr.browser.lightning.R;
 import acr.browser.lightning.app.BrowserApp;
 import acr.browser.lightning.database.downloads.DownloadItem;
 import acr.browser.lightning.database.downloads.DownloadsModel;
+import acr.browser.lightning.preference.PreferenceManager;
 import acr.browser.lightning.utils.Preconditions;
 import acr.browser.lightning.utils.Utils;
 
@@ -58,6 +59,7 @@ public final class DownloadsPage {
     private File mFilesDir;
 
     @Inject Application mApp;
+    @Inject PreferenceManager mPreferenceManager;
     @Inject DownloadsModel mManager;
 
     @NonNull private final String mTitle;
@@ -74,7 +76,7 @@ public final class DownloadsPage {
             public void onSubscribe(@NonNull SingleSubscriber<String> subscriber) {
                 mFilesDir = mApp.getFilesDir();
 
-                buildDownloadsPage(null);
+                buildDownloadsPage();
 
                 File downloadsWebPage = new File(mFilesDir, FILENAME);
 
@@ -84,36 +86,41 @@ public final class DownloadsPage {
         });
     }
 
-    private void buildDownloadsPage(@Nullable final String folder) {
+    private void buildDownloadsPage() {
         mManager.getAllDownloads()
             .subscribe(new SingleOnSubscribe<List<DownloadItem>>() {
                 @Override
                 public void onItem(@Nullable List<DownloadItem> list) {
                     Preconditions.checkNonNull(list);
+                    String directory = mPreferenceManager.getDownloadDirectory();
 
-                    final File downloadsWebPage;
-                    if (folder == null || folder.isEmpty()) {
-                        downloadsWebPage = new File(mFilesDir, FILENAME);
-                    } else {
-                        downloadsWebPage = new File(mFilesDir, folder + '-' + FILENAME);
-                    }
                     final StringBuilder downloadsBuilder = new StringBuilder(HEADING_1 + mTitle + HEADING_2);
 
                     for (int n = 0, size = list.size(); n < size; n++) {
                         final DownloadItem item = list.get(n);
                         downloadsBuilder.append(PART1);
-                        downloadsBuilder.append(item.getUrl());
+                        downloadsBuilder.append("file://");
+                        downloadsBuilder.append(directory);
+                        downloadsBuilder.append("/");
+                        downloadsBuilder.append(item.getTitle());
                         downloadsBuilder.append(PART2);
                         downloadsBuilder.append(item.getTitle());
-                        downloadsBuilder.append(PART3);
+
+                        if (!item.getContentSize().isEmpty()) {
+                            downloadsBuilder.append(" [");
                             downloadsBuilder.append(item.getContentSize());
+                            downloadsBuilder.append("]");
+                        }
+
+                        downloadsBuilder.append(PART3);
+                        downloadsBuilder.append(item.getUrl());
                         downloadsBuilder.append(PART4);
                     }
                     downloadsBuilder.append(END);
                     FileWriter bookWriter = null;
                     try {
                         //noinspection IOResourceOpenedButNotSafelyClosed
-                        bookWriter = new FileWriter(downloadsWebPage, false);
+                        bookWriter = new FileWriter(new File(mFilesDir, FILENAME), false);
                         bookWriter.write(downloadsBuilder.toString());
                     } catch (IOException e) {
                         e.printStackTrace();

app/src/main/java/acr/browser/lightning/dialog/LightningDialogBuilder.java

@@ -10,6 +10,7 @@ import android.support.v7.app.AlertDialog;
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.View;
+import android.webkit.URLUtil;
 import android.widget.ArrayAdapter;
 import android.widget.AutoCompleteTextView;
 import android.widget.EditText;
@@ -27,7 +28,6 @@ import acr.browser.lightning.activity.MainActivity;
 import acr.browser.lightning.app.BrowserApp;
 import acr.browser.lightning.constant.BookmarkPage;
 import acr.browser.lightning.constant.Constants;
-import acr.browser.lightning.constant.DownloadsPage;
 import acr.browser.lightning.controller.UIController;
 import acr.browser.lightning.database.HistoryItem;
 import acr.browser.lightning.database.bookmark.BookmarkModel;
@@ -169,21 +169,7 @@ public class LightningDialogBuilder {
                                                     @NonNull final UIController uiController,
                                                     @NonNull final String url) {
 
-        BrowserDialog.show(activity, R.string.action_bookmarks,
-            new BrowserDialog.Item(R.string.dialog_delete_download) {
-                @Override
-                public void onClick() {
-                    mDownloadsModel.deleteDownload(url).subscribe(new SingleOnSubscribe<Boolean>() {
-                        @Override
-                        public void onItem(@Nullable Boolean item) {
-                            if (item != null && !item)
-                                Log.i(TAG, "error deleting download from database");
-                            else
-                                uiController.handleDownloadDeleted();
-                        }
-                    });
-                }
-            },
+        BrowserDialog.show(activity, R.string.action_downloads,
             new BrowserDialog.Item(R.string.dialog_delete_all_downloads) {
                 @Override
                 public void onClick() {
@@ -393,6 +379,15 @@ public class LightningDialogBuilder {
                 @Override
                 public void onClick() {
                     Utils.downloadFile(activity, mPreferenceManager, url, userAgent, "attachment");
+
+                    mDownloadsModel.addDownloadIfNotExists(new DownloadItem(url, URLUtil.guessFileName(url, null, null), ""))
+                        .subscribe(new SingleOnSubscribe<Boolean>() {
+                            @Override
+                            public void onItem(@Nullable Boolean item) {
+                                if (item != null && !item)
+                                    Log.i(TAG, "error saving download to database");
+                            }
+                        });
                 }
             });
     }

app/src/main/java/acr/browser/lightning/download/DownloadHandler.java

@@ -47,15 +47,6 @@ public class DownloadHandler {
         Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
             .getPath();
 
-    @Nullable
-    static String guessFileExtension(@NonNull String filename) {
-        int lastIndex = filename.lastIndexOf('.') + 1;
-        if (lastIndex > 0 && filename.length() > lastIndex) {
-            return filename.substring(lastIndex, filename.length());
-        }
-        return null;
-    }
-
     /**
      * Notify the host application a download should be done, or that the data
      * should be streamed if a streaming viewer is available.
@@ -222,7 +213,7 @@ public class DownloadHandler {
             Utils.showSnackbar(context, R.string.problem_location_download);
             return;
         }
-        String newMimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(guessFileExtension(filename));
+        String newMimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(Utils.guessFileExtension(filename));
         Log.d(TAG, "New mimetype: " + newMimeType);
         request.setMimeType(newMimeType);
         request.setDestinationUri(Uri.parse(Constants.FILE + location + filename));

app/src/main/java/acr/browser/lightning/download/FetchUrlMimeType.java

@@ -93,7 +93,7 @@ class FetchUrlMimeType extends Thread {
             if (mimeType.equalsIgnoreCase("text/plain")
                 || mimeType.equalsIgnoreCase("application/octet-stream")) {
                 String newMimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(
-                    DownloadHandler.guessFileExtension(mUri));
+                    Utils.guessFileExtension(mUri));
                 if (newMimeType != null) {
                     mRequest.setMimeType(newMimeType);
                 }

app/src/main/java/acr/browser/lightning/download/LightningDownloadListener.java

@@ -50,7 +50,15 @@ public class LightningDownloadListener implements DownloadListener {
             new PermissionsResultAction() {
                 @Override
                 public void onGranted() {
-                    String fileName = URLUtil.guessFileName(url, contentDisposition, mimetype);
+                    final String fileName = URLUtil.guessFileName(url, contentDisposition, mimetype);
+                    final String downloadSize;
+
+                    if (contentLength > 0) {
+                        downloadSize = Formatter.formatFileSize(mActivity, contentLength);
+                    } else {
+                        downloadSize = mActivity.getString(R.string.unknown_size);
+                    }
+
                     DialogInterface.OnClickListener dialogClickListener = new DialogInterface.OnClickListener() {
                         @Override
                         public void onClick(DialogInterface dialog, int which) {
@@ -58,6 +66,15 @@ public class LightningDownloadListener implements DownloadListener {
                                 case DialogInterface.BUTTON_POSITIVE:
                                     DownloadHandler.onDownloadStart(mActivity, mPreferenceManager, url, userAgent,
                                         contentDisposition, mimetype);
+
+                                    downloadsModel.addDownloadIfNotExists(new DownloadItem(url, fileName, downloadSize))
+                                            .subscribe(new SingleOnSubscribe<Boolean>() {
+                                        @Override
+                                        public void onItem(@Nullable Boolean item) {
+                                            if (item != null && !item)
+                                                Log.i(TAG, "error saving download to database");
+                                        }
+                                    });
                                     break;
                                 case DialogInterface.BUTTON_NEGATIVE:
                                     break;
@@ -66,12 +83,6 @@ public class LightningDownloadListener implements DownloadListener {
                     };
 
                     AlertDialog.Builder builder = new AlertDialog.Builder(mActivity); // dialog
-                    String downloadSize;
-                    if (contentLength > 0) {
-                        downloadSize = Formatter.formatFileSize(mActivity, contentLength);
-                    } else {
-                        downloadSize = mActivity.getString(R.string.unknown_size);
-                    }
                     String message = mActivity.getString(R.string.dialog_download, downloadSize);
                     Dialog dialog = builder.setTitle(fileName)
                         .setMessage(message)
@@ -81,16 +92,6 @@ public class LightningDownloadListener implements DownloadListener {
                             dialogClickListener).show();
                     BrowserDialog.setDialogSize(mActivity, dialog);
                     Log.i(TAG, "Downloading: " + fileName);
-
-                    downloadsModel.addDownloadIfNotExists(new DownloadItem(url, fileName, downloadSize)).subscribe(new SingleOnSubscribe<Boolean>() {
-                        @Override
-                        public void onItem(@Nullable Boolean item) {
-                            super.onItem(item);
-
-                            if (item != null && !item)
-                                Log.i(TAG, "error saving download to database");
-                        }
-                    });
                 }
 
                 @Override

app/src/main/java/acr/browser/lightning/utils/Utils.java

@@ -456,4 +456,13 @@ public final class Utils {
         return inSampleSize;
     }
 
+    @Nullable
+    public static String guessFileExtension(@NonNull String filename) {
+        int lastIndex = filename.lastIndexOf('.') + 1;
+        if (lastIndex > 0 && filename.length() > lastIndex) {
+            return filename.substring(lastIndex, filename.length());
+        }
+        return null;
+    }
+
 }

app/src/main/java/acr/browser/lightning/view/LightningWebClient.java

@@ -8,30 +8,31 @@ import android.content.DialogInterface;
 import android.content.Intent;
 import android.graphics.Bitmap;
 import android.net.MailTo;
+import android.net.Uri;
 import android.net.http.SslError;
 import android.os.Build;
 import android.os.Message;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
-import android.support.v4.view.LayoutInflaterCompat;
+import android.support.v4.content.FileProvider;
 import android.support.v7.app.AlertDialog;
-import android.text.InputType;
-import android.text.method.PasswordTransformationMethod;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.webkit.HttpAuthHandler;
+import android.webkit.MimeTypeMap;
 import android.webkit.SslErrorHandler;
+import android.webkit.URLUtil;
 import android.webkit.ValueCallback;
 import android.webkit.WebResourceRequest;
 import android.webkit.WebResourceResponse;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 import android.widget.EditText;
-import android.widget.LinearLayout;
 import android.widget.TextView;
 
 import java.io.ByteArrayInputStream;
+import java.io.File;
 import java.net.URISyntaxException;
 import java.util.ArrayList;
 import java.util.List;
@@ -39,6 +40,7 @@ import java.util.Map;
 
 import javax.inject.Inject;
 
+import acr.browser.lightning.BuildConfig;
 import acr.browser.lightning.R;
 import acr.browser.lightning.app.BrowserApp;
 import acr.browser.lightning.constant.Constants;
@@ -358,6 +360,26 @@ public class LightningWebClient extends WebViewClient {
                 }
                 return true;
             }
+        } else if (url.startsWith("file://")) {
+            File file = new File(url.replace("file://", ""));
+
+            if (file.exists()) {
+                String newMimeType = MimeTypeMap.getSingleton()
+                        .getMimeTypeFromExtension(Utils.guessFileExtension(file.toString()));
+
+                Intent intent = new Intent();
+                intent.setAction(Intent.ACTION_VIEW);
+                intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+                Uri contentUri = FileProvider.getUriForFile(mActivity, BuildConfig.APPLICATION_ID + ".fileprovider", file);
+                intent.setDataAndType(contentUri, newMimeType);
+
+                try {
+                    mActivity.startActivity(intent);
+                } catch (Exception e) {
+                    System.out.println("LightningWebClient: cannot open downloaded file");
+                }
+                return true;
+            }
         }
         return false;
     }

app/src/main/res/xml/filepaths.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths>
+    <external-path name="share" path="/" />
+    <external-path name="external_files" path="."/>
+</paths>