/WebVox/src/com/marvin/webvox/BrowserBookmarksAdapter.java
http://eyes-free.googlecode.com/ · Java · 594 lines · 425 code · 55 blank · 114 comment · 98 complexity · 9f501918f7ff826ad29976ca12e641c8 MD5 · raw file
- /*
- * Copyright (C) 2006 The Android Open Source 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.marvin.webvox;
- import com.marvin.webvox.R;
- import android.content.ContentResolver;
- import android.content.ContentUris;
- import android.content.ContentValues;
- import android.database.ContentObserver;
- import android.database.Cursor;
- import android.database.DataSetObserver;
- import android.graphics.Bitmap;
- import android.graphics.BitmapFactory;
- import android.net.Uri;
- import android.os.Bundle;
- import android.os.Handler;
- import android.provider.Browser;
- import android.provider.Browser.BookmarkColumns;
- import android.view.KeyEvent;
- import android.view.LayoutInflater;
- import android.view.View;
- import android.view.ViewGroup;
- import android.webkit.WebIconDatabase;
- import android.webkit.WebIconDatabase.IconListener;
- import android.webkit.WebView;
- import android.widget.BaseAdapter;
- import android.widget.ImageView;
- import android.widget.TextView;
- import java.io.ByteArrayOutputStream;
- class BrowserBookmarksAdapter extends BaseAdapter {
- private String mCurrentPage;
- private String mCurrentTitle;
- private Bitmap mCurrentThumbnail;
- private Cursor mCursor;
- private int mCount;
- private BrowserBookmarksPage mBookmarksPage;
- private ContentResolver mContentResolver;
- private boolean mDataValid;
- private BookmarkViewMode mViewMode;
- private boolean mMostVisited;
- private boolean mNeedsOffset;
- private int mExtraOffset;
- // Implementation of WebIconDatabase.IconListener
- private class IconReceiver implements IconListener {
- public void onReceivedIcon(String url, Bitmap icon) {
- updateBookmarkFavicon(mContentResolver, null, url, icon);
- }
- }
- // Instance of IconReceiver
- private final IconReceiver mIconReceiver = new IconReceiver();
- /**
- * Create a new BrowserBookmarksAdapter.
- * @param b BrowserBookmarksPage that instantiated this.
- * Necessary so it will adjust its focus
- * appropriately after a search.
- */
- public BrowserBookmarksAdapter(BrowserBookmarksPage b, String curPage,
- String curTitle, Bitmap curThumbnail, boolean createShortcut,
- boolean mostVisited) {
- mNeedsOffset = !(createShortcut || mostVisited);
- mMostVisited = mostVisited;
- mExtraOffset = mNeedsOffset ? 1 : 0;
- mBookmarksPage = b;
- mCurrentPage = b.getResources().getString(R.string.current_page)
- + curPage;
- mCurrentTitle = curTitle;
- mCurrentThumbnail = curThumbnail;
- mContentResolver = b.getContentResolver();
- mViewMode = BookmarkViewMode.LIST;
- String whereClause;
- // FIXME: Should have a default sort order that the user selects.
- String orderBy = Browser.BookmarkColumns.VISITS + " DESC";
- if (mostVisited) {
- whereClause = Browser.BookmarkColumns.VISITS + " != 0";
- } else {
- whereClause = Browser.BookmarkColumns.BOOKMARK + " != 0";
- }
- mCursor = b.managedQuery(Browser.BOOKMARKS_URI,
- Browser.HISTORY_PROJECTION, whereClause, null, orderBy);
- mCursor.registerContentObserver(new ChangeObserver());
- mCursor.registerDataSetObserver(new MyDataSetObserver());
- mDataValid = true;
- notifyDataSetChanged();
- mCount = mCursor.getCount() + mExtraOffset;
- // FIXME: This requires another query of the database after the
- // managedQuery. Can we optimize this?
- Browser.requestAllIcons(mContentResolver,
- Browser.BookmarkColumns.FAVICON + " is NULL AND " +
- Browser.BookmarkColumns.BOOKMARK + " == 1", mIconReceiver);
- }
-
- /**
- * Return a hashmap with one row's Title, Url, and favicon.
- * @param position Position in the list.
- * @return Bundle Stores title, url of row position, favicon, and id
- * for the url. Return a blank map if position is out of
- * range.
- */
- public Bundle getRow(int position) {
- Bundle map = new Bundle();
- if (position < mExtraOffset || position >= mCount) {
- return map;
- }
- mCursor.moveToPosition(position- mExtraOffset);
- String url = mCursor.getString(Browser.HISTORY_PROJECTION_URL_INDEX);
- map.putString(Browser.BookmarkColumns.TITLE,
- mCursor.getString(Browser.HISTORY_PROJECTION_TITLE_INDEX));
- map.putString(Browser.BookmarkColumns.URL, url);
- byte[] data = mCursor.getBlob(Browser.HISTORY_PROJECTION_FAVICON_INDEX);
- if (data != null) {
- map.putParcelable(Browser.BookmarkColumns.FAVICON,
- BitmapFactory.decodeByteArray(data, 0, data.length));
- }
- map.putInt("id", mCursor.getInt(Browser.HISTORY_PROJECTION_ID_INDEX));
- return map;
- }
- /**
- * Update a row in the database with new information.
- * Requeries the database if the information has changed.
- * @param map Bundle storing id, title and url of new information
- */
- public void updateRow(Bundle map) {
- // Find the record
- int id = map.getInt("id");
- int position = -1;
- for (mCursor.moveToFirst(); !mCursor.isAfterLast(); mCursor.moveToNext()) {
- if (mCursor.getInt(Browser.HISTORY_PROJECTION_ID_INDEX) == id) {
- position = mCursor.getPosition();
- break;
- }
- }
- if (position < 0) {
- return;
- }
- mCursor.moveToPosition(position);
- ContentValues values = new ContentValues();
- String title = map.getString(Browser.BookmarkColumns.TITLE);
- if (!title.equals(mCursor
- .getString(Browser.HISTORY_PROJECTION_TITLE_INDEX))) {
- values.put(Browser.BookmarkColumns.TITLE, title);
- }
- String url = map.getString(Browser.BookmarkColumns.URL);
- if (!url.equals(mCursor.
- getString(Browser.HISTORY_PROJECTION_URL_INDEX))) {
- values.put(Browser.BookmarkColumns.URL, url);
- }
- if (map.getBoolean("invalidateThumbnail") == true) {
- // values.put(Browser.BookmarkColumns.THUMBNAIL, new byte[0]);
- }
- if (values.size() > 0
- && mContentResolver.update(Browser.BOOKMARKS_URI, values,
- "_id = " + id, null) != -1) {
- refreshList();
- }
- }
- /**
- * Delete a row from the database. Requeries the database.
- * Does nothing if the provided position is out of range.
- * @param position Position in the list.
- */
- public void deleteRow(int position) {
- if (position < mExtraOffset || position >= getCount()) {
- return;
- }
- mCursor.moveToPosition(position- mExtraOffset);
- String url = mCursor.getString(Browser.HISTORY_PROJECTION_URL_INDEX);
- String title = mCursor.getString(Browser.HISTORY_PROJECTION_TITLE_INDEX);
- Bookmarks.removeFromBookmarks(null, mContentResolver, url, title);
- refreshList();
- }
-
- /**
- * Delete all bookmarks from the db. Requeries the database.
- * All bookmarks with become visited URLs or if never visited
- * are removed
- */
- public void deleteAllRows() {
- StringBuilder deleteIds = null;
- StringBuilder convertIds = null;
-
- for (mCursor.moveToFirst(); !mCursor.isAfterLast(); mCursor.moveToNext()) {
- String url = mCursor.getString(Browser.HISTORY_PROJECTION_URL_INDEX);
- WebIconDatabase.getInstance().releaseIconForPageUrl(url);
- int id = mCursor.getInt(Browser.HISTORY_PROJECTION_ID_INDEX);
- int numVisits = mCursor.getInt(Browser.HISTORY_PROJECTION_VISITS_INDEX);
- if (0 == numVisits) {
- if (deleteIds == null) {
- deleteIds = new StringBuilder();
- deleteIds.append("( ");
- } else {
- deleteIds.append(" OR ( ");
- }
- deleteIds.append(BookmarkColumns._ID);
- deleteIds.append(" = ");
- deleteIds.append(id);
- deleteIds.append(" )");
- } else {
- // It is no longer a bookmark, but it is still a visited site.
- if (convertIds == null) {
- convertIds = new StringBuilder();
- convertIds.append("( ");
- } else {
- convertIds.append(" OR ( ");
- }
- convertIds.append(BookmarkColumns._ID);
- convertIds.append(" = ");
- convertIds.append(id);
- convertIds.append(" )");
- }
- }
-
- if (deleteIds != null) {
- mContentResolver.delete(Browser.BOOKMARKS_URI, deleteIds.toString(),
- null);
- }
- if (convertIds != null) {
- ContentValues values = new ContentValues();
- values.put(Browser.BookmarkColumns.BOOKMARK, 0);
- mContentResolver.update(Browser.BOOKMARKS_URI, values,
- convertIds.toString(), null);
- }
- refreshList();
- }
- /**
- * Refresh list to recognize a change in the database.
- */
- public void refreshList() {
- mCursor.requery();
- mCount = mCursor.getCount() + mExtraOffset;
- notifyDataSetChanged();
- }
- /**
- * Update the bookmark's favicon. This is a convenience method for updating
- * a bookmark favicon for the originalUrl and url of the passed in WebView.
- * @param cr The ContentResolver to use.
- * @param originalUrl The original url before any redirects.
- * @param url The current url.
- * @param favicon The favicon bitmap to write to the db.
- */
- /* package */ static void updateBookmarkFavicon(ContentResolver cr,
- String originalUrl, String url, Bitmap favicon) {
- final Cursor c = queryBookmarksForUrl(cr, originalUrl, url, true);
- if (c == null) {
- return;
- }
- boolean succeed = c.moveToFirst();
- ContentValues values = null;
- while (succeed) {
- if (values == null) {
- final ByteArrayOutputStream os = new ByteArrayOutputStream();
- favicon.compress(Bitmap.CompressFormat.PNG, 100, os);
- values = new ContentValues();
- values.put(Browser.BookmarkColumns.FAVICON, os.toByteArray());
- }
- cr.update(ContentUris.withAppendedId(Browser.BOOKMARKS_URI, c
- .getInt(0)), values, null, null);
- succeed = c.moveToNext();
- }
- c.close();
- }
- /* package */ static Cursor queryBookmarksForUrl(ContentResolver cr,
- String originalUrl, String url, boolean onlyBookmarks) {
- if (cr == null || url == null) {
- return null;
- }
- // If originalUrl is null, just set it to url.
- if (originalUrl == null) {
- originalUrl = url;
- }
- // Look for both the original url and the actual url. This takes in to
- // account redirects.
- String originalUrlNoQuery = removeQuery(originalUrl);
- String urlNoQuery = removeQuery(url);
- originalUrl = originalUrlNoQuery + '?';
- url = urlNoQuery + '?';
- // Use NoQuery to search for the base url (i.e. if the url is
- // http://www.yahoo.com/?rs=1, search for http://www.yahoo.com)
- // Use url to match the base url with other queries (i.e. if the url is
- // http://www.google.com/m, search for
- // http://www.google.com/m?some_query)
- final String[] selArgs = new String[] {
- originalUrlNoQuery, urlNoQuery, originalUrl, url };
- String where = BookmarkColumns.URL + " == ? OR "
- + BookmarkColumns.URL + " == ? OR "
- + BookmarkColumns.URL + " GLOB ? || '*' OR "
- + BookmarkColumns.URL + " GLOB ? || '*'";
- if (onlyBookmarks) {
- where = "(" + where + ") AND " + BookmarkColumns.BOOKMARK + " == 1";
- }
- final String[] projection =
- new String[] { Browser.BookmarkColumns._ID };
- return cr.query(Browser.BOOKMARKS_URI, projection, where, selArgs,
- null);
- }
- // Strip the query from the given url.
- private static String removeQuery(String url) {
- if (url == null) {
- return null;
- }
- int query = url.indexOf('?');
- String noQuery = url;
- if (query != -1) {
- noQuery = url.substring(0, query);
- }
- return noQuery;
- }
- /**
- * How many items should be displayed in the list.
- * @return Count of items.
- */
- public int getCount() {
- if (mDataValid) {
- return mCount;
- } else {
- return 0;
- }
- }
- public boolean areAllItemsEnabled() {
- return true;
- }
- public boolean isEnabled(int position) {
- return true;
- }
- /**
- * Get the data associated with the specified position in the list.
- * @param position Index of the item whose data we want.
- * @return The data at the specified position.
- */
- public Object getItem(int position) {
- return null;
- }
- /**
- * Get the row id associated with the specified position in the list.
- * @param position Index of the item whose row id we want.
- * @return The id of the item at the specified position.
- */
- public long getItemId(int position) {
- return position;
- }
- /* package */ void switchViewMode(BookmarkViewMode viewMode) {
- mViewMode = viewMode;
- }
- /* package */ void populateBookmarkItem(BookmarkItem b, int position) {
- mCursor.moveToPosition(position - mExtraOffset);
- String url = mCursor.getString(Browser.HISTORY_PROJECTION_URL_INDEX);
- b.setUrl(url);
- b.setName(mCursor.getString(Browser.HISTORY_PROJECTION_TITLE_INDEX));
- byte[] data = mCursor.getBlob(Browser.HISTORY_PROJECTION_FAVICON_INDEX);
- Bitmap bitmap = null;
- if (data == null) {
- bitmap = CombinedBookmarkHistoryActivity.getIconListenerSet()
- .getFavicon(url);
- } else {
- bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
- }
- b.setFavicon(bitmap);
- }
- /**
- * Get a View that displays the data at the specified position
- * in the list.
- * @param position Index of the item whose view we want.
- * @return A View corresponding to the data at the specified position.
- */
- public View getView(int position, View convertView, ViewGroup parent) {
- if (!mDataValid) {
- throw new IllegalStateException(
- "this should only be called when the cursor is valid");
- }
- if (position < 0 || position > mCount) {
- throw new AssertionError(
- "BrowserBookmarksAdapter tried to get a view out of range");
- }
- if (mViewMode == BookmarkViewMode.GRID) {
- if (convertView == null || convertView instanceof AddNewBookmark
- || convertView instanceof BookmarkItem) {
- LayoutInflater factory = LayoutInflater.from(mBookmarksPage);
- convertView
- = factory.inflate(R.layout.bookmark_thumbnail, null);
- }
- View holder = convertView.findViewById(R.id.holder);
- ImageView thumb = (ImageView) convertView.findViewById(R.id.thumb);
- TextView tv = (TextView) convertView.findViewById(R.id.label);
- if (0 == position && mNeedsOffset) {
- // This is to create a bookmark for the current page.
- holder.setVisibility(View.VISIBLE);
- tv.setText(mCurrentTitle);
- if (mCurrentThumbnail != null) {
- thumb.setImageBitmap(mCurrentThumbnail);
- } else {
- thumb.setImageResource(
- R.drawable.browser_thumbnail);
- }
- return convertView;
- }
- holder.setVisibility(View.GONE);
- mCursor.moveToPosition(position - mExtraOffset);
- tv.setText(mCursor.getString(
- Browser.HISTORY_PROJECTION_TITLE_INDEX));
- // Bitmap thumbnail = getBitmap(Browser.HISTORY_PROJECTION_THUMBNAIL_INDEX, position);
- // if (thumbnail == null) {
- // thumb.setImageResource(R.drawable.browser_thumbnail);
- // } else {
- // thumb.setImageBitmap(thumbnail);
- // }
- return convertView;
- }
- if (position == 0 && mNeedsOffset) {
- AddNewBookmark b;
- if (convertView instanceof AddNewBookmark) {
- b = (AddNewBookmark) convertView;
- } else {
- b = new AddNewBookmark(mBookmarksPage);
- }
- b.setUrl(mCurrentPage);
- return b;
- }
- if (mMostVisited) {
- if (convertView == null || !(convertView instanceof HistoryItem)) {
- convertView = new HistoryItem(mBookmarksPage);
- }
- } else {
- if (convertView == null || !(convertView instanceof BookmarkItem)) {
- convertView = new BookmarkItem(mBookmarksPage);
- }
- }
- bind((BookmarkItem) convertView, position);
- if (mMostVisited) {
- ((HistoryItem) convertView).setIsBookmark(
- getIsBookmark(position));
- }
- return convertView;
- }
- /**
- * Return the title for this item in the list.
- */
- public String getTitle(int position) {
- return getString(Browser.HISTORY_PROJECTION_TITLE_INDEX, position);
- }
- /**
- * Return the Url for this item in the list.
- */
- public String getUrl(int position) {
- return getString(Browser.HISTORY_PROJECTION_URL_INDEX, position);
- }
- /**
- * Return the favicon for this item in the list.
- */
- public Bitmap getFavicon(int position) {
- return getBitmap(Browser.HISTORY_PROJECTION_FAVICON_INDEX, position);
- }
- public Bitmap getTouchIcon(int position) {
- // return getBitmap(Browser.HISTORY_PROJECTION_TOUCH_ICON_INDEX, position);
- return getBitmap(Browser.HISTORY_PROJECTION_FAVICON_INDEX, position);
- }
- private Bitmap getBitmap(int cursorIndex, int position) {
- if (position < mExtraOffset || position > mCount) {
- return null;
- }
- mCursor.moveToPosition(position - mExtraOffset);
- byte[] data = mCursor.getBlob(cursorIndex);
- if (data == null) {
- return null;
- }
- return BitmapFactory.decodeByteArray(data, 0, data.length);
- }
- /**
- * Return whether or not this item represents a bookmarked site.
- */
- public boolean getIsBookmark(int position) {
- if (position < mExtraOffset || position > mCount) {
- return false;
- }
- mCursor.moveToPosition(position - mExtraOffset);
- return (1 == mCursor.getInt(Browser.HISTORY_PROJECTION_BOOKMARK_INDEX));
- }
- /**
- * Private helper function to return the title or url.
- */
- private String getString(int cursorIndex, int position) {
- if (position < mExtraOffset || position > mCount) {
- return "";
- }
- mCursor.moveToPosition(position- mExtraOffset);
- return mCursor.getString(cursorIndex);
- }
- private void bind(BookmarkItem b, int position) {
- mCursor.moveToPosition(position- mExtraOffset);
- String title = mCursor.getString(Browser.HISTORY_PROJECTION_TITLE_INDEX);
- if (title.length() > BrowserSettings.MAX_TEXTVIEW_LEN) {
- title = title.substring(0, BrowserSettings.MAX_TEXTVIEW_LEN);
- }
- b.setName(title);
- String url = mCursor.getString(Browser.HISTORY_PROJECTION_URL_INDEX);
- if (url.length() > BrowserSettings.MAX_TEXTVIEW_LEN) {
- url = url.substring(0, BrowserSettings.MAX_TEXTVIEW_LEN);
- }
- b.setUrl(url);
- byte[] data = mCursor.getBlob(Browser.HISTORY_PROJECTION_FAVICON_INDEX);
- if (data != null) {
- b.setFavicon(BitmapFactory.decodeByteArray(data, 0, data.length));
- } else {
- b.setFavicon(CombinedBookmarkHistoryActivity.getIconListenerSet()
- .getFavicon(url));
- }
- }
- private class ChangeObserver extends ContentObserver {
- public ChangeObserver() {
- super(new Handler());
- }
- @Override
- public boolean deliverSelfNotifications() {
- return true;
- }
- @Override
- public void onChange(boolean selfChange) {
- refreshList();
- }
- }
-
- private class MyDataSetObserver extends DataSetObserver {
- @Override
- public void onChanged() {
- mDataValid = true;
- notifyDataSetChanged();
- }
- @Override
- public void onInvalidated() {
- mDataValid = false;
- notifyDataSetInvalidated();
- }
- }
- }