The Tor Browser: mobile/android/base/db/TopSitesCursorWrapper.java@fc2d59ddac77 (annotated)

mobile/android/base/db/TopSitesCursorWrapper.java@fc2d59ddac77 (annotated)

mobile/android/base/db/TopSitesCursorWrapper.java

Wed, 31 Dec 2014 07:22:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 07:22:50 +0100
branch: TOR_BUG_3246
changeset 4: fc2d59ddac77
permissions: -rw-r--r--

Correct previous dual key logic pending first delivery installment.

 package org.mozilla.gecko.db;
 import android.database.Cursor;
 import android.database.CursorWrapper;
 import android.util.SparseArray;
 import org.mozilla.gecko.db.BrowserContract.Bookmarks;
 import org.mozilla.gecko.db.BrowserDB.URLColumns;
 /**
  * {@TopSitesCursorWrapper} is a cursor wrapper that merges
  * the top and pinned sites cursors into one. It ensures the
  * cursor will contain at least a given minimum number of
  * entries.
  */
 public class TopSitesCursorWrapper extends CursorWrapper {
     private static class PinnedSite {
         public final String title;
         public final String url;
         public PinnedSite(String title, String url) {
             this.title = (title == null ? "" : title);
             this.url = (url == null ? "" : url);
         }
     }
     // The cursor for the top sites query
     private final Cursor topCursor;
     // Associates pinned sites and their respective positions
     private SparseArray<PinnedSite> pinnedSites;
     // Current position of the cursor
     private int currentPosition = -1;
     // The size of the cursor wrapper
     private final int count;
     public TopSitesCursorWrapper(Cursor pinnedCursor, Cursor topCursor, int minSize) {
         super(topCursor);
         setPinnedSites(pinnedCursor);
         this.topCursor = topCursor;
         count = Math.max(minSize, pinnedSites.size() + topCursor.getCount());
     }
     public void setPinnedSites(Cursor c) {
         pinnedSites = new SparseArray<PinnedSite>();
         if (c == null) {
             return;
         }
         try {
             if (c.getCount() <= 0) {
                 return;
             }
             c.moveToPosition(0);
             do {
                 final int pos = c.getInt(c.getColumnIndex(Bookmarks.POSITION));
                 final String url = c.getString(c.getColumnIndex(URLColumns.URL));
                 final String title = c.getString(c.getColumnIndex(URLColumns.TITLE));
                 pinnedSites.put(pos, new PinnedSite(title, url));
             } while (c.moveToNext());
         } finally {
             c.close();
         }
     }
     public boolean hasPinnedSites() {
         return (pinnedSites != null && pinnedSites.size() > 0);
     }
     public PinnedSite getPinnedSite(int position) {
         if (!hasPinnedSites()) {
             return null;
         }
         return pinnedSites.get(position);
     }
     public boolean isPinned() {
         return (pinnedSites.get(currentPosition) != null);
     }
     private int getPinnedBefore(int position) {
         int numFound = 0;
         if (!hasPinnedSites()) {
             return numFound;
         }
         for (int i = 0; i < position; i++) {
             if (pinnedSites.get(i) != null) {
                 numFound++;
             }
         }
         return numFound;
     }
     @Override
     public int getPosition() {
         return currentPosition;
     }
     @Override
     public int getCount() {
         return count;
     }
     @Override
     public boolean isAfterLast() {
         return (currentPosition >= count);
     }
     @Override
     public boolean isBeforeFirst() {
         return (currentPosition < 0);
     }
     @Override
     public boolean isLast() {
         return (currentPosition == count - 1);
     }
     @Override
     public boolean moveToNext() {
         return moveToPosition(currentPosition + 1);
     }
     @Override
     public boolean moveToPrevious() {
         return moveToPosition(currentPosition - 1);
     }
     @Override
     public boolean move(int offset) {
         return moveToPosition(currentPosition + offset);
     }
     @Override
     public boolean moveToFirst() {
         return moveToPosition(0);
     }
     @Override
     public boolean moveToLast() {
         return moveToPosition(count - 1);
     }
     @Override
     public boolean moveToPosition(int position) {
         currentPosition = position;
         // Move the real cursor as if we were stepping through it to this position.
         // Account for pinned sites, and be careful to update its position to the
         // minimum or maximum position, even if we're moving beyond its bounds.
         final int before = getPinnedBefore(position);
         final int p2 = position - before;
         if (p2 <= -1) {
             super.moveToPosition(-1);
         } else if (p2 >= topCursor.getCount()) {
             super.moveToPosition(topCursor.getCount());
         } else {
             super.moveToPosition(p2);
         }
         return (!isBeforeFirst() && !isAfterLast());
     }
     @Override
     public long getLong(int columnIndex) {
         if (hasPinnedSites()) {
             final PinnedSite site = getPinnedSite(currentPosition);
             if (site != null) {
                 return 0;
             }
         }
         if (!super.isBeforeFirst() && !super.isAfterLast()) {
             return super.getLong(columnIndex);
         }
         return 0;
     }
     @Override
     public int getInt(int columnIndex) {
         if (hasPinnedSites()) {
             final PinnedSite site = getPinnedSite(currentPosition);
             if (site != null) {
                 return 0;
             }
         }
         if (!super.isBeforeFirst() && !super.isAfterLast()) {
             return super.getInt(columnIndex);
         }
         return 0;
     }
     @Override
     public String getString(int columnIndex) {
         if (hasPinnedSites()) {
             final PinnedSite site = getPinnedSite(currentPosition);
             if (site != null) {
                 if (columnIndex == topCursor.getColumnIndex(URLColumns.URL)) {
                     return site.url;
                 } else if (columnIndex == topCursor.getColumnIndex(URLColumns.TITLE)) {
                     return site.title;
                 }
                 return "";
             }
         }
         if (!super.isBeforeFirst() && !super.isAfterLast()) {
             return super.getString(columnIndex);
         }
         return "";
     }
 }

The Tor Browser / annotate

mobile/android/base/db/TopSitesCursorWrapper.java@fc2d59ddac77 (annotated)

mobile/android/base/db/TopSitesCursorWrapper.java