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/*
* Copyright (C) 2012 The CyanogenMod Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.cyanogenmod.filemanager.preferences;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import com.cyanogenmod.filemanager.model.Bookmark;
/**
* A class for deal with user-defined bookmarks
*/
public class Bookmarks {
private final static int INVALID_BOOKMARKS_ID = -1;
/**
* Method that add a new bookmark
*
* @param context The current context
* @param bookmark The bookmark to add or update
* @return Bookmark The bookmark added
*/
public static Bookmark addBookmark(Context context, Bookmark bookmark) {
// Check that has a valid information
if (bookmark.mPath == null) return null;
// Retrieve the content resolver
ContentResolver contentResolver = context.getContentResolver();
// Check that the bookmarks not exists
Bookmark b = getBookmark(contentResolver, bookmark.mPath);
if (b != null) return b;
// Create the content values
ContentValues values = createContentValues(bookmark);
Uri uri = context.getContentResolver().insert(Bookmark.Columns.CONTENT_URI, values);
bookmark.mId = (int) ContentUris.parseId(uri);
if (bookmark.mId == INVALID_BOOKMARKS_ID) {
return null;
}
return bookmark;
}
/**
* Method that removes a bookmark
*
* @param context The current context
* @param bookmark The bookmark to delete
* @return boolean If the bookmarks was remove
*/
public static boolean removeBookmark(Context context, Bookmark bookmark) {
// Check that has a valid information
if (bookmark.mId == INVALID_BOOKMARKS_ID) return false;
// Retrieve the content resolver
ContentResolver contentResolver = context.getContentResolver();
Uri uri = ContentUris.withAppendedId(Bookmark.Columns.CONTENT_URI, bookmark.mId);
return contentResolver.delete(uri, "", null) == 1; //$NON-NLS-1$
}
/**
* Method that return the bookmark from his identifier
*
* @param contentResolver The content resolver
* @param bookmarkId The bookmark identifier
* @return Bookmark The bookmark. null if no bookmark exists.
*/
public static Bookmark getBookmark(ContentResolver contentResolver, int bookmarkId) {
Cursor cursor = contentResolver.query(
ContentUris.withAppendedId(Bookmark.Columns.CONTENT_URI, bookmarkId),
Bookmark.Columns.BOOKMARK_QUERY_COLUMNS,
null, null, null);
Bookmark bookmark = null;
try {
if (cursor != null) {
if (cursor.moveToFirst()) {
bookmark = new Bookmark(cursor);
}
}
} finally {
try {
if (cursor != null) {
cursor.close();
}
} catch (Exception e) {/**NON BLOCK**/}
}
return bookmark;
}
/**
* Method that return all the bookmarks in the database
*
* @param contentResolver The content resolver
* @return Cursor The bookmarks cursor
*/
public static Cursor getAllBookmarks(ContentResolver contentResolver) {
return contentResolver.query(
Bookmark.Columns.CONTENT_URI,
Bookmark.Columns.BOOKMARK_QUERY_COLUMNS,
null, null, null);
}
/**
* Method that return the bookmark from his path
*
* @param contentResolver The content resolver
* @param path The bookmark path
* @return Bookmark The bookmark. null if no bookmark exists.
*/
public static Bookmark getBookmark(ContentResolver contentResolver, String path) {
final String where = Bookmark.Columns.PATH + " = ?"; //$NON-NLS-1$
Cursor cursor = contentResolver.query(
Bookmark.Columns.CONTENT_URI,
Bookmark.Columns.BOOKMARK_QUERY_COLUMNS,
where, new String[]{path}, null);
Bookmark bookmark = null;
try {
if (cursor != null) {
if (cursor.moveToFirst()) {
bookmark = new Bookmark(cursor);
}
cursor.close();
}
} finally {
try {
if (cursor != null) {
cursor.close();
}
} catch (Exception e) {/**NON BLOCK**/}
}
return bookmark;
}
/**
* Method that remove all orphan bookmarks derived from "path"
*
* @param ctx The current context
* @param path The path to check
*/
public static void deleteOrphanBookmarks(Context ctx, String path) {
ContentResolver cr = ctx.getContentResolver();
Cursor cursor = Bookmarks.getAllBookmarks(cr);
try {
if (cursor != null && cursor.moveToFirst()) {
do {
Bookmark bm = new Bookmark(cursor);
if (bm.mPath.startsWith(path)) {
removeBookmark(ctx, bm);
}
} while (cursor.moveToNext());
}
} finally {
try {
if (cursor != null) {
cursor.close();
}
} catch (Exception e) {/**NON BLOCK**/}
}
}
/**
* Method that create the {@link ContentValues} from the bookmark
*
* @param bookmark The bookmark
* @return ContentValues The content
*/
private static ContentValues createContentValues(Bookmark bookmark) {
ContentValues values = new ContentValues(1);
values.put(Bookmark.Columns.PATH, bookmark.mPath);
return values;
}
}
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