michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: package org.mozilla.gecko;
michael@0: 
michael@0: import java.io.File;
michael@0: import java.util.Map;
michael@0: import java.util.Map.Entry;
michael@0: 
michael@0: import org.mozilla.gecko.GeckoProfileDirectories.NoMozillaDirectoryException;
michael@0: import org.mozilla.gecko.db.BrowserContract;
michael@0: 
michael@0: import android.content.ContentProvider;
michael@0: import android.content.ContentValues;
michael@0: import android.content.UriMatcher;
michael@0: import android.database.Cursor;
michael@0: import android.database.MatrixCursor;
michael@0: import android.net.Uri;
michael@0: import android.util.Log;
michael@0: 
michael@0: /**
michael@0:  * This is not a per-profile provider. This provider allows read-only,
michael@0:  * restricted access to certain attributes of Fennec profiles.
michael@0:  */
michael@0: public class GeckoProfilesProvider extends ContentProvider {
michael@0:     private static final String LOG_TAG = "GeckoProfilesProvider";
michael@0: 
michael@0:     private static final UriMatcher URI_MATCHER = new UriMatcher(UriMatcher.NO_MATCH);
michael@0: 
michael@0:     private static final int PROFILES = 100;
michael@0:     private static final int PROFILES_NAME = 101;
michael@0:     private static final int PROFILES_DEFAULT = 200;
michael@0: 
michael@0:     private static final String[] DEFAULT_ARGS = {
michael@0:         BrowserContract.Profiles.NAME,
michael@0:         BrowserContract.Profiles.PATH,
michael@0:     };
michael@0: 
michael@0:     static {
michael@0:         URI_MATCHER.addURI(BrowserContract.PROFILES_AUTHORITY, "profiles", PROFILES);
michael@0:         URI_MATCHER.addURI(BrowserContract.PROFILES_AUTHORITY, "profiles/*", PROFILES_NAME);
michael@0:         URI_MATCHER.addURI(BrowserContract.PROFILES_AUTHORITY, "default", PROFILES_DEFAULT);
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public String getType(Uri uri) {
michael@0:         return null;
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public boolean onCreate() {
michael@0:         // Successfully loaded.
michael@0:         return true;
michael@0:     }
michael@0: 
michael@0:     private String[] profileValues(final String name, final String path, int len, int nameIndex, int pathIndex) {
michael@0:         final String[] values = new String[len];
michael@0:         if (nameIndex >= 0) {
michael@0:             values[nameIndex] = name;
michael@0:         }
michael@0:         if (pathIndex >= 0) {
michael@0:             values[pathIndex] = path;
michael@0:         }
michael@0:         return values;
michael@0:     }
michael@0: 
michael@0:     protected void addRowForProfile(final MatrixCursor cursor, final int len, final int nameIndex, final int pathIndex, final String name, final String path) {
michael@0:         if (path == null || name == null) {
michael@0:             return;
michael@0:         }
michael@0: 
michael@0:         String[] values = new String[len];
michael@0:         if (nameIndex >= 0) {
michael@0:             values[nameIndex] = name;
michael@0:         }
michael@0:         if (pathIndex >= 0) {
michael@0:             values[pathIndex] = path;
michael@0:         }
michael@0:         cursor.addRow(profileValues(name, path, len, nameIndex, pathIndex));
michael@0:     }
michael@0: 
michael@0:     protected Cursor getCursorForProfiles(final String[] args, Map<String, String> profiles) {
michael@0:         // Compute the projection.
michael@0:         int nameIndex = -1;
michael@0:         int pathIndex = -1;
michael@0:         for (int i = 0; i < args.length; ++i) {
michael@0:             if (BrowserContract.Profiles.NAME.equals(args[i])) {
michael@0:                 nameIndex = i;
michael@0:             } else if (BrowserContract.Profiles.PATH.equals(args[i])) {
michael@0:                 pathIndex = i;
michael@0:             }
michael@0:         }
michael@0: 
michael@0:         final MatrixCursor cursor = new MatrixCursor(args);
michael@0:         for (Entry<String, String> entry : profiles.entrySet()) {
michael@0:             addRowForProfile(cursor, args.length, nameIndex, pathIndex, entry.getKey(), entry.getValue());
michael@0:         }
michael@0:         return cursor;
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public Cursor query(Uri uri, String[] projection, String selection,
michael@0:                         String[] selectionArgs, String sortOrder) {
michael@0: 
michael@0:         final String[] args = (projection == null) ? DEFAULT_ARGS : projection;
michael@0: 
michael@0:         final File mozillaDir;
michael@0:         try {
michael@0:             mozillaDir = GeckoProfileDirectories.getMozillaDirectory(getContext());
michael@0:         } catch (NoMozillaDirectoryException e) {
michael@0:             Log.d(LOG_TAG, "No Mozilla directory; cannot query for profiles. Assuming there are none.");
michael@0:             return new MatrixCursor(projection);
michael@0:         }
michael@0: 
michael@0:         final Map<String, String> matchingProfiles;
michael@0: 
michael@0:         final int match = URI_MATCHER.match(uri);
michael@0:         switch (match) {
michael@0:         case PROFILES:
michael@0:             // Return all profiles.
michael@0:             matchingProfiles = GeckoProfileDirectories.getAllProfiles(mozillaDir);
michael@0:             break;
michael@0:         case PROFILES_NAME:
michael@0:             // Return data about the specified profile.
michael@0:             final String name = uri.getLastPathSegment();
michael@0:             matchingProfiles = GeckoProfileDirectories.getProfilesNamed(mozillaDir,
michael@0:                                                                        name);
michael@0:             break;
michael@0:         case PROFILES_DEFAULT:
michael@0:             matchingProfiles = GeckoProfileDirectories.getDefaultProfile(mozillaDir);
michael@0:             break;
michael@0:         default:
michael@0:             throw new UnsupportedOperationException("Unknown query URI " + uri);
michael@0:         }
michael@0: 
michael@0:         return getCursorForProfiles(args, matchingProfiles);
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public Uri insert(Uri uri, ContentValues values) {
michael@0:         throw new IllegalStateException("Inserts not supported.");
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public int delete(Uri uri, String selection, String[] selectionArgs) {
michael@0:         throw new IllegalStateException("Deletes not supported.");
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public int update(Uri uri, ContentValues values, String selection,
michael@0:                       String[] selectionArgs) {
michael@0:         throw new IllegalStateException("Updates not supported.");
michael@0:     }
michael@0: 
michael@0: }