manual merging with steffen branch: visited hyperlinks engine

src/org/geometerplus/android/fbreader/ProcessHyperlinkAction.java

@@ -63,6 +63,7 @@ class ProcessHyperlinkAction extends FBAction {
 					}
 					break;
 				case FBHyperlinkType.INTERNAL:
+					Reader.Model.Book.markHyperlinkAsVisited(hyperlink.Id);
 					Reader.tryOpenFootnote(hyperlink.Id);
 					break;
 			}

src/org/geometerplus/android/fbreader/SQLiteBooksDatabase.java

@@ -61,7 +61,7 @@ public final class SQLiteBooksDatabase extends BooksDatabase {
 
 	private void migrate(Context context) {
 		final int version = myDatabase.getVersion();
-		final int currentVersion = 15;
+		final int currentVersion = 16;
 		if (version >= currentVersion) {
 			return;
 		}
@@ -100,6 +100,8 @@ public final class SQLiteBooksDatabase extends BooksDatabase {
 						updateTables13();
 					case 14:
 						updateTables14();
+					case 15:
+						updateTables15();
 				}
 				myDatabase.setTransactionSuccessful();
 				myDatabase.endTransaction();
@@ -838,6 +840,7 @@ public final class SQLiteBooksDatabase extends BooksDatabase {
 		}
 		myDeleteFromBookListStatement.bindLong(1, bookId);
 		myDeleteFromBookListStatement.execute();
+		deleteVisitedHyperlinks(bookId);
 		return true;
 	}
 
@@ -852,6 +855,41 @@ public final class SQLiteBooksDatabase extends BooksDatabase {
 		return myCheckBookListStatement.simpleQueryForLong() > 0;
 	}
 
+	private SQLiteStatement myDeleteVisitedHyperlinksStatement;
+	private void deleteVisitedHyperlinks(long bookId) {
+		if (myDeleteVisitedHyperlinksStatement == null) {
+			myDeleteVisitedHyperlinksStatement = myDatabase.compileStatement(
+				"DELETE FROM VisitedHyperlinks WHERE book_id = ?"
+			);
+		}
+
+		myDeleteVisitedHyperlinksStatement.bindLong(1, bookId);
+		myDeleteVisitedHyperlinksStatement.execute();
+	}
+
+	private SQLiteStatement myStoreVisitedHyperlinksStatement;
+	protected void addVisitedHyperlink(long bookId, String hyperlinkId) {
+		if (myStoreVisitedHyperlinksStatement == null) {
+			myStoreVisitedHyperlinksStatement = myDatabase.compileStatement(
+				"INSERT OR IGNORE INTO VisitedHyperlinks(book_id,hyperlink_id) VALUES (?,?)"
+			);
+		}
+
+		myStoreVisitedHyperlinksStatement.bindLong(1, bookId);
+		myStoreVisitedHyperlinksStatement.bindString(2, hyperlinkId);
+		myStoreVisitedHyperlinksStatement.execute();
+	}
+
+	protected Collection<String> loadVisitedHyperlinks(long bookId) {
+		final TreeSet<String> links = new TreeSet<String>();
+		final Cursor cursor = myDatabase.rawQuery("SELECT hyperlink_id FROM VisitedHyperlinks WHERE book_id = ?", new String[] { "" + bookId });
+		while (cursor.moveToNext()) {
+			links.add(cursor.getString(0));
+		}
+		cursor.close();
+		return links;
+	}
+
 
 	private void createTables() {
 		myDatabase.execSQL(
@@ -1140,4 +1178,12 @@ public final class SQLiteBooksDatabase extends BooksDatabase {
 		myDatabase.execSQL("INSERT INTO BookSeries (series_id,book_id,book_index) SELECT series_id,book_id,book_index FROM BookSeries_Obsolete");
 		myDatabase.execSQL("DROP TABLE BookSeries_Obsolete");
 	}
+
+	private void updateTables15() {
+		myDatabase.execSQL(
+			"CREATE TABLE IF NOT EXISTS VisitedHyperlinks(" +
+				"book_id INTEGER NOT NULL REFERENCES Books(book_id)," +
+				"hyperlink_id TEXT NOT NULL," +
+				"CONSTRAINT VisitedHyperlinks_Unique UNIQUE (book_id, hyperlink_id))");
+	}
 }

src/org/geometerplus/fbreader/bookmodel/FBHyperlinkType.java

@@ -23,5 +23,4 @@ public interface FBHyperlinkType {
 	byte NONE = 0;
 	byte INTERNAL = 1;
 	byte EXTERNAL = 2;
-	byte INTERNAL_VISITED = 3;
 }

src/org/geometerplus/fbreader/fbreader/FBView.java

@@ -386,17 +386,18 @@ public final class FBView extends ZLTextView {
 	}
 
 	@Override
-	public ZLColor getTextColor(byte hyperlinkType) {
+	public ZLColor getTextColor(ZLTextHyperlink hyperlink) {
 		final ColorProfile profile = myReader.getColorProfile();
-		switch (hyperlinkType) {
+		switch (hyperlink.Type) {
 			default:
 			case FBHyperlinkType.NONE:
 				return profile.RegularTextOption.getValue();
 			case FBHyperlinkType.INTERNAL:
+				return myReader.Model.Book.isHyperlinkVisited(hyperlink.Id)
+					? profile.VisitedHyperlinkTextOption.getValue()
+					: profile.HyperlinkTextOption.getValue();
 			case FBHyperlinkType.EXTERNAL:
 				return profile.HyperlinkTextOption.getValue();
-			case FBHyperlinkType.INTERNAL_VISITED:
-				return profile.VisitedHyperlinkTextOption.getValue();
 		}
 	}
 
@@ -463,7 +464,7 @@ public final class FBView extends ZLTextView {
 
 			final ZLColor bgColor = getBackgroundColor();
 			// TODO: separate color option for footer color
-			final ZLColor fgColor = getTextColor(FBHyperlinkType.NONE);
+			final ZLColor fgColor = getTextColor(ZLTextHyperlink.NO_LINK);
 			final ZLColor fillColor = reader.getColorProfile().FooterFillOption.getValue();
 
 			final int left = getLeftMargin();

src/org/geometerplus/fbreader/library/Book.java

@@ -335,6 +335,7 @@ public class Book {
 					database.updateBookInfo(myId, fileInfos.getId(File), myEncoding, myLanguage, myTitle);
 				} else {
 					myId = database.insertBookInfo(File, myEncoding, myLanguage, myTitle);
+					storeAllVisitedHyperinks();
 				}
 
 				long index = 0;
@@ -364,6 +365,39 @@ public class Book {
 		}
 	}
 
+	private Set<String> myVisitedHyperlinks;
+	private void initHyperlinkSet() {
+		if (myVisitedHyperlinks == null) {
+			myVisitedHyperlinks = new TreeSet<String>();
+			if (myId != -1) {
+				myVisitedHyperlinks.addAll(BooksDatabase.Instance().loadVisitedHyperlinks(myId));
+			}
+		}
+	}
+
+	public boolean isHyperlinkVisited(String linkId) {
+		initHyperlinkSet();
+		return myVisitedHyperlinks.contains(linkId);
+	}
+
+	public void markHyperlinkAsVisited(String linkId) {
+		initHyperlinkSet();
+		if (!myVisitedHyperlinks.contains(linkId)) {
+			myVisitedHyperlinks.add(linkId);
+			if (myId != -1) {
+				BooksDatabase.Instance().addVisitedHyperlink(myId, linkId);
+			}
+		}
+	}
+
+	private void storeAllVisitedHyperinks() {
+		if (myId != -1 && myVisitedHyperlinks != null) {
+			for (String linkId : myVisitedHyperlinks) {
+				BooksDatabase.Instance().addVisitedHyperlink(myId, linkId);
+			}
+		}
+	}
+
 	public void insertIntoBookList() {
 		if (myId != -1) {
 			BooksDatabase.Instance().insertIntoBookList(myId);

src/org/geometerplus/fbreader/library/BooksDatabase.java

@@ -104,4 +104,7 @@ public abstract class BooksDatabase {
 	protected abstract boolean insertIntoBookList(long bookId);
 	protected abstract boolean deleteFromBookList(long bookId);
 	protected abstract boolean checkBookList(long bookId);
+
+	protected abstract Collection<String> loadVisitedHyperlinks(long bookId);
+	protected abstract void addVisitedHyperlink(long bookId, String hyperlinkId);
 }

src/org/geometerplus/zlibrary/text/view/ZLTextViewBase.java

@@ -51,7 +51,7 @@ abstract class ZLTextViewBase extends ZLView {
 	public abstract ZLFile getWallpaperFile();
 	public abstract ZLColor getBackgroundColor();
 	public abstract ZLColor getSelectedBackgroundColor();
-	public abstract ZLColor getTextColor(byte hyperlinkType);
+	public abstract ZLColor getTextColor(ZLTextHyperlink hyperlink);
 	public abstract ZLColor getHighlightingColor();
 
 	int getTextAreaHeight() {
@@ -185,7 +185,7 @@ abstract class ZLTextViewBase extends ZLView {
 
 	final void drawWord(int x, int y, ZLTextWord word, int start, int length, boolean addHyphenationSign) {
 		final ZLPaintContext context = myContext;
-		context.setTextColor(getTextColor(myTextStyle.Hyperlink.Type));
+		context.setTextColor(getTextColor(myTextStyle.Hyperlink));
 		if ((start == 0) && (length == -1)) {
 			drawString(x, y, word.Data, word.Offset, word.Length, word.getMark(), 0);
 		} else {