Preliminary fix for permissions, fixed a new crash, formatted some code

app/src/main/java/acr/browser/lightning/activity/BrowserActivity.java

@@ -11,14 +11,12 @@ import android.animation.ValueAnimator.AnimatorUpdateListener;
 import android.app.Activity;
 import android.content.ClipData;
 import android.content.ClipboardManager;
-import android.content.ComponentName;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.database.sqlite.SQLiteException;
 import android.graphics.Bitmap;
-import android.graphics.BitmapFactory;
 import android.graphics.Color;
 import android.graphics.PorterDuff;
 import android.graphics.drawable.ColorDrawable;
@@ -45,7 +43,6 @@ import android.support.v7.graphics.drawable.DrawerArrowDrawable;
 import android.support.v7.widget.Toolbar;
 import android.util.Log;
 import android.view.KeyEvent;
-import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.MotionEvent;
@@ -77,7 +74,6 @@ import android.widget.EditText;
 import android.widget.FrameLayout;
 import android.widget.ImageButton;
 import android.widget.ImageView;
-import android.widget.LinearLayout;
 import android.widget.RelativeLayout;
 import android.widget.TextView;
 import android.widget.TextView.OnEditorActionListener;
@@ -88,8 +84,6 @@ import com.squareup.otto.Subscribe;
 
 import java.io.File;
 import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
 
 import javax.inject.Inject;
 
@@ -109,7 +103,6 @@ import acr.browser.lightning.dialog.LightningDialogBuilder;
 import acr.browser.lightning.fragment.BookmarksFragment;
 import acr.browser.lightning.fragment.TabsFragment;
 import acr.browser.lightning.object.SearchAdapter;
-import acr.browser.lightning.preference.PreferenceManager;
 import acr.browser.lightning.receiver.NetworkReceiver;
 import acr.browser.lightning.utils.PermissionsManager;
 import acr.browser.lightning.utils.ProxyUtils;
@@ -1848,6 +1841,7 @@ public abstract class BrowserActivity extends ThemableBrowserActivity implements
     }
 
     // TODO Check if all the calls are relative to TabsFragement
+
     /**
      * A utility method that creates a FrameLayout button with the given ID and
      * sets the image of the button to the given image ID. The OnClick and OnLongClick
@@ -1894,7 +1888,7 @@ public abstract class BrowserActivity extends ThemableBrowserActivity implements
      */
     @Override
     public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
-        PermissionsManager.getInstance().notifyPermissionsChange(permissions);
+        PermissionsManager.getInstance().notifyPermissionsChange(permissions, grantResults);
         super.onRequestPermissionsResult(requestCode, permissions, grantResults);
     }
 

app/src/main/java/acr/browser/lightning/activity/SettingsActivity.java

@@ -61,7 +61,7 @@ public class SettingsActivity extends ThemableSettingsActivity {
 
     @Override
     public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
-        PermissionsManager.getInstance().notifyPermissionsChange(permissions);
+        PermissionsManager.getInstance().notifyPermissionsChange(permissions, grantResults);
         super.onRequestPermissionsResult(requestCode, permissions, grantResults);
     }
 }

app/src/main/java/acr/browser/lightning/activity/TabsManager.java

@@ -1,6 +1,5 @@
 package acr.browser.lightning.activity;
 
-import android.app.Activity;
 import android.content.Context;
 import android.support.annotation.Nullable;
 import android.webkit.WebView;
@@ -11,7 +10,6 @@ import java.util.List;
 import javax.inject.Inject;
 import javax.inject.Singleton;
 
-import acr.browser.lightning.controller.BrowserController;
 import acr.browser.lightning.preference.PreferenceManager;
 import acr.browser.lightning.utils.Utils;
 import acr.browser.lightning.view.LightningView;
@@ -122,6 +120,7 @@ public class TabsManager {
             }
         }
     }
+
     /**
      * @return The number of currently opened tabs
      */
@@ -163,9 +162,10 @@ public class TabsManager {
     }
 
     /**
-     * Return the position of the given tab
-     * @param tab
-     * @return
+     * Return the position of the given tab.
+     *
+     * @param tab the tab to look for
+     * @return the position of the tab or -1 if the tab is not in the list
      */
     public int positionOf(final LightningView tab) {
         return mWebViewList.indexOf(tab);
@@ -178,7 +178,7 @@ public class TabsManager {
         final StringBuilder builder = new StringBuilder();
         for (LightningView tab : mWebViewList) {
             final String url = tab.getUrl();
-            if (url != null && !url.isEmpty()) {
+            if (!url.isEmpty()) {
                 builder.append(url).append("|$|SEPARATOR|$|");
             }
         }
@@ -187,6 +187,7 @@ public class TabsManager {
 
     /**
      * Return the {@link WebView} associated to the current tab, or null if there is no current tab
+     *
      * @return a {@link WebView} or null
      */
     @Nullable
@@ -196,8 +197,10 @@ public class TabsManager {
 
     /**
      * TODO We should remove also this, but probably not
+     *
      * @return
      */
+    @Nullable
     public LightningView getCurrentTab() {
         return mCurrentTab;
     }

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

@@ -6,6 +6,8 @@ package acr.browser.lightning.download;
 import android.app.DownloadManager;
 import android.content.Context;
 import android.os.Environment;
+import android.os.Handler;
+import android.os.Looper;
 import android.webkit.MimeTypeMap;
 import android.webkit.URLUtil;
 
@@ -53,7 +55,7 @@ class FetchUrlMimeType extends Thread {
     public void run() {
         // User agent is likely to be null, though the AndroidHttpClient
         // seems ok with that.
-        final Bus evenBus = BrowserApp.getAppComponent().getBus();
+        final Bus eventBus = BrowserApp.getAppComponent().getBus();
         String mimeType = null;
         String contentDisposition = null;
         HttpURLConnection connection = null;
@@ -108,6 +110,13 @@ class FetchUrlMimeType extends Thread {
         DownloadManager manager = (DownloadManager) mContext
                 .getSystemService(Context.DOWNLOAD_SERVICE);
         manager.enqueue(mRequest);
-        evenBus.post(new BrowserEvents.ShowSnackBarMessage(mContext.getString(R.string.download_pending) + ' ' + filename));
+        Handler handler = new Handler(Looper.getMainLooper());
+        final String file = filename;
+        handler.post(new Runnable() {
+            @Override
+            public void run() {
+                eventBus.post(new BrowserEvents.ShowSnackBarMessage(mContext.getString(R.string.download_pending) + ' ' + file));
+            }
+        });
     }
 }

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

@@ -3,7 +3,8 @@
  */
 package acr.browser.lightning.download;
 
-import android.content.Context;
+import android.Manifest;
+import android.app.Activity;
 import android.content.DialogInterface;
 import android.support.v7.app.AlertDialog;
 import android.util.Log;
@@ -16,23 +17,26 @@ import acr.browser.lightning.utils.PermissionsManager;
 
 public class LightningDownloadListener implements DownloadListener {
 
-    private final Context mContext;
+    private final Activity mActivity;
 
-    public LightningDownloadListener(Context context) {
-        mContext = context;
+    public LightningDownloadListener(Activity context) {
+        mActivity = context;
     }
 
-    //TODO implement permissions for downloading
     @Override
     public void onDownloadStart(final String url, final String userAgent,
                                 final String contentDisposition, final String mimetype, long contentLength) {
+        PermissionsManager.getInstance().requestPermissionsIfNecessary(mActivity, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE,
+                Manifest.permission.WRITE_EXTERNAL_STORAGE}, new PermissionsManager.PermissionResult() {
+            @Override
+            public void onGranted() {
                 String fileName = URLUtil.guessFileName(url, contentDisposition, mimetype);
                 DialogInterface.OnClickListener dialogClickListener = new DialogInterface.OnClickListener() {
                     @Override
                     public void onClick(DialogInterface dialog, int which) {
                         switch (which) {
                             case DialogInterface.BUTTON_POSITIVE:
-                        DownloadHandler.onDownloadStart(mContext, url, userAgent,
+                                DownloadHandler.onDownloadStart(mActivity, url, userAgent,
                                         contentDisposition, mimetype);
                                 break;
 
@@ -42,14 +46,22 @@ public class LightningDownloadListener implements DownloadListener {
                     }
                 };
 
-        AlertDialog.Builder builder = new AlertDialog.Builder(mContext); // dialog
+                AlertDialog.Builder builder = new AlertDialog.Builder(mActivity); // dialog
                 builder.setTitle(fileName)
-                .setMessage(mContext.getResources().getString(R.string.dialog_download))
-                .setPositiveButton(mContext.getResources().getString(R.string.action_download),
+                        .setMessage(mActivity.getResources().getString(R.string.dialog_download))
+                        .setPositiveButton(mActivity.getResources().getString(R.string.action_download),
                                 dialogClickListener)
-                .setNegativeButton(mContext.getResources().getString(R.string.action_cancel),
+                        .setNegativeButton(mActivity.getResources().getString(R.string.action_cancel),
                                 dialogClickListener).show();
                 Log.i(Constants.TAG, "Downloading" + fileName);
+            }
+
+            @Override
+            public void onDenied(String permission) {
+                //TODO show message
+            }
+        });
+
 
     }
 }

app/src/main/java/acr/browser/lightning/fragment/BookmarkSettingsFragment.java

@@ -88,7 +88,7 @@ public class BookmarkSettingsFragment extends PreferenceFragment implements Pref
 
         PermissionsManager permissionsManager = PermissionsManager.getInstance();
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
-            permissionsManager.requestPermissionsIfNecessary(getActivity(), REQUIRED_PERMISSIONS);
+            permissionsManager.requestPermissionsIfNecessary(getActivity(), REQUIRED_PERMISSIONS, null);
         }
     }
 
@@ -124,15 +124,40 @@ public class BookmarkSettingsFragment extends PreferenceFragment implements Pref
     public boolean onPreferenceClick(Preference preference) {
         switch (preference.getKey()) {
             case SETTINGS_EXPORT:
-                if (PermissionsManager.checkPermissions(getActivity(), REQUIRED_PERMISSIONS)) {
+//                if (PermissionsManager.checkPermissions(getActivity(), REQUIRED_PERMISSIONS)) {
+//                    mBookmarkManager.exportBookmarks(getActivity());
+//                }
+                PermissionsManager.getInstance().requestPermissionsIfNecessary(getActivity(), REQUIRED_PERMISSIONS,
+                        new PermissionsManager.PermissionResult() {
+                            @Override
+                            public void onGranted() {
                                 mBookmarkManager.exportBookmarks(getActivity());
                             }
+
+                            @Override
+                            public void onDenied(String permission) {
+                                //TODO Show message
+                            }
+                        });
                 return true;
             case SETTINGS_IMPORT:
-                if (PermissionsManager.checkPermissions(getActivity(), REQUIRED_PERMISSIONS)) {
+//                if (PermissionsManager.checkPermissions(getActivity(), REQUIRED_PERMISSIONS)) {
+//                    loadFileList(null);
+//                    createDialog();
+//                }
+                PermissionsManager.getInstance().requestPermissionsIfNecessary(getActivity(), REQUIRED_PERMISSIONS,
+                        new PermissionsManager.PermissionResult() {
+                            @Override
+                            public void onGranted() {
                                 loadFileList(null);
                                 createDialog();
                             }
+
+                            @Override
+                            public void onDenied(String permission) {
+                                //TODO Show message
+                            }
+                        });
                 return true;
             case SETTINGS_IMPORT_BROWSER:
                 new ImportBookmarksTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);

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

@@ -4,8 +4,11 @@ import android.app.Activity;
 import android.content.pm.PackageManager;
 import android.os.Build;
 import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.v4.app.ActivityCompat;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
@@ -13,10 +16,11 @@ import java.util.Set;
 /**
  * Copyright 8/22/2015 Anthony Restaino
  */
-public class PermissionsManager {
+public final class PermissionsManager {
 
     private static PermissionsManager mInstance;
     private final Set<String> mPendingRequests = new HashSet<>();
+    private final List<PermissionResult> mPendingActions = new ArrayList<>();
 
     public static PermissionsManager getInstance() {
         if (mInstance == null) {
@@ -25,34 +29,47 @@ public class PermissionsManager {
         return mInstance;
     }
 
-    public void requestPermissionsIfNecessary(Activity activity, @NonNull String[] permissions) {
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M || activity == null) {
+    private void addPendingAction(@NonNull String[] permissions, @Nullable PermissionResult result) {
+        if (result == null) {
+            return;
+        }
+        result.addPermissions(permissions);
+        mPendingActions.add(result);
+    }
+
+    public void requestPermissionsIfNecessary(@Nullable Activity activity, @NonNull String[] permissions, @Nullable PermissionResult result) {
+        if (activity == null) {
+            return;
+        }
+        addPendingAction(permissions, result);
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+            for (String perm : permissions) {
+                if (result != null) {
+                    result.onResult(perm, PackageManager.PERMISSION_GRANTED);
+                }
+            }
             return;
         }
         List<String> permList = new ArrayList<>();
         for (String perm : permissions) {
-            if (activity.checkSelfPermission(perm) != PackageManager.PERMISSION_GRANTED
-                    && !mPendingRequests.contains(perm)) {
+            if (ActivityCompat.checkSelfPermission(activity, perm) != PackageManager.PERMISSION_GRANTED) {
+                if (!mPendingRequests.contains(perm)) {
                     permList.add(perm);
                 }
+            } else {
+                if (result != null) {
+                    result.onResult(perm, PackageManager.PERMISSION_GRANTED);
+                }
+            }
         }
         if (!permList.isEmpty()) {
             String[] permsToRequest = permList.toArray(new String[permList.size()]);
             mPendingRequests.addAll(permList);
-            activity.requestPermissions(permsToRequest, 1);
+            ActivityCompat.requestPermissions(activity, permsToRequest, 1);
         }
 
     }
 
-    public static boolean checkPermission(Activity activity, @NonNull String permission) {
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
-            return true;
-        } else if (activity == null) {
-            return false;
-        }
-        return activity.checkSelfPermission(permission) == PackageManager.PERMISSION_GRANTED;
-    }
-
     public static boolean checkPermissions(Activity activity, @NonNull String[] permissions) {
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
             return true;
@@ -66,9 +83,40 @@ public class PermissionsManager {
         return permissionsNecessary;
     }
 
-    public void notifyPermissionsChange(String[] permissions) {
-        for (String perm : permissions) {
-            mPendingRequests.remove(perm);
+    public void notifyPermissionsChange(@NonNull String[] permissions, @NonNull int[] results) {
+        int size = permissions.length;
+        if (results.length < size) {
+            size = results.length;
+        }
+        for (int n = 0; n < size; n++) {
+            for (PermissionResult result : mPendingActions) {
+                result.onResult(permissions[n], results[n]);
+                mPendingRequests.remove(permissions[n]);
+            }
+        }
+    }
+
+    public static abstract class PermissionResult {
+
+        private Set<String> mPermissions = new HashSet<>();
+
+        public abstract void onGranted();
+
+        public abstract void onDenied(String permission);
+
+        public void onResult(String permission, int result) {
+            if (result == PackageManager.PERMISSION_GRANTED) {
+                mPermissions.remove(permission);
+                if (mPermissions.isEmpty()) {
+                    onGranted();
+                }
+            } else {
+                onDenied(permission);
+            }
+        }
+
+        public void addPermissions(@NonNull String[] perms) {
+            Collections.addAll(mPermissions, perms);
         }
     }
 

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

@@ -3,6 +3,7 @@
  */
 package acr.browser.lightning.utils;
 
+import android.Manifest;
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.content.Context;
@@ -44,12 +45,24 @@ public final class Utils {
 
     public static void downloadFile(final Activity activity, final String url,
                                     final String userAgent, final String contentDisposition) {
+        PermissionsManager.getInstance().requestPermissionsIfNecessary(activity, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE,
+                Manifest.permission.WRITE_EXTERNAL_STORAGE}, new PermissionsManager.PermissionResult() {
+            @Override
+            public void onGranted() {
                 String fileName = URLUtil.guessFileName(url, null, null);
                 DownloadHandler.onDownloadStart(activity, url, userAgent, contentDisposition, null
                 );
                 Log.i(Constants.TAG, "Downloading" + fileName);
             }
 
+            @Override
+            public void onDenied(String permission) {
+                // TODO Show Message
+            }
+        });
+
+    }
+
     public static Intent newEmailIntent(String address, String subject,
                                         String body, String cc) {
         Intent intent = new Intent(Intent.ACTION_SEND);

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

@@ -61,12 +61,14 @@ class LightningChromeClient extends WebChromeClient {
         if (icon == null)
             return;
         mLightningView.mTitle.setFavicon(icon);
-        eventBus.post(new BrowserEvents.TabsChanged()); ;
+        eventBus.post(new BrowserEvents.TabsChanged());
+        ;
         cacheFavicon(view.getUrl(), icon);
     }
 
     /**
      * Naive caching of the favicon according to the domain name of the URL
+     *
      * @param icon the icon to cache
      */
     private void cacheFavicon(final String url, final Bitmap icon) {
@@ -112,7 +114,9 @@ class LightningChromeClient extends WebChromeClient {
     @Override
     public void onGeolocationPermissionsShowPrompt(final String origin,
                                                    final GeolocationPermissions.Callback callback) {
-        PermissionsManager.getInstance().requestPermissionsIfNecessary(mActivity, PERMISSIONS);
+        PermissionsManager.getInstance().requestPermissionsIfNecessary(mActivity, PERMISSIONS, new PermissionsManager.PermissionResult() {
+            @Override
+            public void onGranted() {
                 final boolean remember = true;
                 AlertDialog.Builder builder = new AlertDialog.Builder(mActivity);
                 builder.setTitle(mActivity.getString(R.string.location));
@@ -140,7 +144,13 @@ class LightningChromeClient extends WebChromeClient {
                                 });
                 AlertDialog alert = builder.create();
                 alert.show();
+            }
 
+            @Override
+            public void onDenied(String permission) {
+                //TODO show message and/or turn off setting
+            }
+        });
     }
 
     @Override

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

@@ -39,6 +39,7 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 
 import javax.inject.Inject;
+
 import java.util.ArrayList;
 import java.util.List;
 
@@ -198,9 +199,6 @@ public class LightningView {
 
         if (!mIsIncognitoTab) {
             settings.setGeolocationEnabled(mPreferences.getLocationEnabled());
-            if (mPreferences.getLocationEnabled() && !PermissionsManager.checkPermissions(mActivity, PERMISSIONS)) {
-                mPermissionsManager.requestPermissionsIfNecessary(mActivity, PERMISSIONS);
-            }
         } else {
             settings.setGeolocationEnabled(false);
         }
@@ -527,6 +525,7 @@ public class LightningView {
 
     /**
      * Naive caching of the favicon according to the domain name of the URL
+     *
      * @param icon the icon to cache
      */
     private void cacheFavicon(final Bitmap icon) {
@@ -591,6 +590,7 @@ public class LightningView {
     public boolean getInvertePage() {
         return mInvertPage;
     }
+
     /**
      * handles a long click on the page, parameter String url
      * is the url that should have been obtained from the WebView touch node