API enhancements

src/org/geometerplus/android/fbreader/api/ApiServerImplementation.java

@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2009-2011 Geometer Plus <contact@geometerplus.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+package org.geometerplus.android.fbreader.api;
+
+import java.util.*;
+
+import org.geometerplus.zlibrary.core.library.ZLibrary;
+
+import org.geometerplus.zlibrary.text.view.*;
+
+import org.geometerplus.fbreader.fbreader.FBReaderApp;
+
+public class ApiServerImplementation extends ApiInterface.Stub implements ApiMethods {
+	private final FBReaderApp myReader = (FBReaderApp)FBReaderApp.Instance();
+
+	private ApiObject.Error unsupportedMethodError(int method) {
+		return new ApiObject.Error("Unsupported method code: " + method);
+	}
+
+	@Override
+	public ApiObject request(int method, ApiObject[] parameters) {
+		try {
+			switch (method) {
+				case GET_FBREADER_VERSION:
+					return ApiObject.envelope(ZLibrary.Instance().getVersionName());
+				case GET_BOOK_LANGUAGE:
+					return ApiObject.envelope(myReader.Model.Book.getLanguage());
+				case GET_BOOK_TITLE:
+					return ApiObject.envelope(myReader.Model.Book.getTitle());
+				case GET_PARAGRAPHS_NUMBER:
+					return ApiObject.envelope(getParagraphsNumber());
+				case GET_ELEMENTS_NUMBER:
+					return ApiObject.envelope(getElementsNumber(
+						((ApiObject.Integer)parameters[0]).Value
+					));
+				case GET_PARAGRAPH_TEXT:
+					return ApiObject.envelope(getParagraphText(
+						((ApiObject.Integer)parameters[0]).Value
+					));
+				case GET_PAGE_START:
+					return getTextPosition(myReader.getTextView().getStartCursor());
+				case GET_PAGE_END:
+					return getTextPosition(myReader.getTextView().getEndCursor());
+				case IS_PAGE_END_OF_SECTION:
+					return ApiObject.envelope(isPageEndOfSection());
+				case IS_PAGE_END_OF_TEXT:
+					return ApiObject.envelope(isPageEndOfText());
+				case SET_PAGE_START:
+					setPageStart((TextPosition)parameters[0]);
+					return ApiObject.Void.Instance;
+				case HIGHLIGHT_AREA:
+					return ApiObject.Void.Instance;
+				case CLEAR_HIGHLIGHTING:
+					return ApiObject.Void.Instance;
+				default:
+					return unsupportedMethodError(method);
+			}
+		} catch (Throwable e) {
+			return new ApiObject.Error("Exception in method " + method + ": " + e);
+		} 
+	}
+
+	@Override
+	public List<ApiObject> requestList(int method, ApiObject[] parameters) {
+		return Collections.<ApiObject>singletonList(unsupportedMethodError(method));
+	}
+
+	@Override
+	public Map<ApiObject,ApiObject> requestMap(int method, ApiObject[] parameters) {
+		final ApiObject error = unsupportedMethodError(method);
+		return Collections.singletonMap(error, error);
+	}
+
+	private TextPosition getTextPosition(ZLTextWordCursor cursor) {
+		return new TextPosition(
+			cursor.getParagraphIndex(),
+			cursor.getElementIndex(),
+			cursor.getCharIndex()
+		);
+	}
+
+	private boolean isPageEndOfSection() {
+		final ZLTextWordCursor cursor = myReader.getTextView().getEndCursor();
+		return cursor.isEndOfParagraph() && cursor.getParagraphCursor().isEndOfSection();
+	}
+
+	private boolean isPageEndOfText() {
+		final ZLTextWordCursor cursor = myReader.getTextView().getEndCursor();
+		return cursor.isEndOfParagraph() && cursor.getParagraphCursor().isLast();
+	}
+
+	private void setPageStart(TextPosition position) {
+		myReader.getTextView().gotoPosition(position.ParagraphIndex, position.ElementIndex, position.CharIndex);
+		myReader.getViewWidget().repaint();
+	}
+
+	private int getParagraphsNumber() {
+		return myReader.Model.BookTextModel.getParagraphsNumber();
+	}
+
+	private int getElementsNumber(int paragraphIndex) {
+		final ZLTextWordCursor cursor = new ZLTextWordCursor(myReader.getTextView().getStartCursor());
+		cursor.moveToParagraph(paragraphIndex);
+		cursor.moveToParagraphEnd();
+		return cursor.getElementIndex();
+	}
+
+	private String getParagraphText(int paragraphIndex) {
+		final StringBuffer sb = new StringBuffer();
+		final ZLTextWordCursor cursor = new ZLTextWordCursor(myReader.getTextView().getStartCursor());
+		cursor.moveToParagraph(paragraphIndex);
+		cursor.moveToParagraphStart();
+		while (!cursor.isEndOfParagraph()) {
+			ZLTextElement element = cursor.getElement();
+			if (element instanceof ZLTextWord) {
+				sb.append(element.toString() + " ");
+			}
+			cursor.nextWord();
+		}
+		return sb.toString();
+	}
+}