net.bible.android.control.BibleContentManager.java Source code

Introduction

Here is the source code for net.bible.android.control.BibleContentManager.java

Source

package net.bible.android.control;

import java.util.ArrayList;
import java.util.List;

import net.bible.android.control.page.CurrentBiblePage;
import net.bible.android.control.page.CurrentPage;
import net.bible.android.control.page.CurrentPageManager;
import net.bible.android.view.activity.page.BibleView;
import net.bible.service.format.FormattedDocument;
import net.bible.service.format.Note;
import net.bible.service.sword.SwordContentFacade;

import org.apache.commons.lang.StringUtils;
import org.crosswire.jsword.book.Book;
import org.crosswire.jsword.passage.Key;

import android.os.AsyncTask;
import android.util.Log;

/** Control content of main view screen
 * 
 * @author Martin Denham [mjdenham at gmail dot com]
 * @see gnu.lgpl.License for license details.<br>
 *      The copyright to this program is held by it's author.
 */
public class BibleContentManager {

    // bible and verse displayed on the screen
    private Book displayedBible;
    private Key displayedVerse;
    private List<Note> notesList;

    private BibleView bibleWebView;

    private static final String TAG = "BibleContentManager";

    private String NO_CONTENT = "No content for selected verse";

    public BibleContentManager(BibleView bibleWebView) {
        this.bibleWebView = bibleWebView;

        PassageChangeMediator.getInstance().setBibleContentManager(this);
    }

    public void updateText() {
        updateText(false);
    }

    public void updateText(boolean forceUpdate) {
        CurrentPage currentPage = CurrentPageManager.getInstance().getCurrentPage();
        Book document = currentPage.getCurrentDocument();
        Key key = currentPage.getKey();

        // check for duplicate scren update requests
        if (!forceUpdate && document.equals(displayedBible) && key.equals(displayedVerse)) {
            Log.w(TAG, "Duplicated screen update. Doc:" + document.getInitials() + " Key:" + key);
        }
        new UpdateTextTask().execute(currentPage);
    }

    private class UpdateTextTask extends AsyncTask<CurrentPage, Integer, String> {
        private int verseNo;
        private float yScreenOffsetRatio;

        @Override
        protected void onPreExecute() {
            PassageChangeMediator.getInstance().contentChangeStarted();
        }

        @Override
        protected String doInBackground(CurrentPage... currentPageArgs) {
            Log.d(TAG, "Loading html in background");
            String text = "Error";
            try {
                CurrentPage currentPage = currentPageArgs[0];
                Book document = currentPage.getCurrentDocument();
                // if bible show whole chapter
                Key key = currentPage.getKey();
                // but allow for jump to specific verse e.g. after search result
                if (currentPage instanceof CurrentBiblePage) {
                    verseNo = ((CurrentBiblePage) currentPage).getCurrentVerseNo();
                }
                yScreenOffsetRatio = currentPage.getCurrentYOffsetRatio();

                Log.d(TAG, "Loading document:" + document.getInitials() + " key:" + key);

                notesList = new ArrayList<Note>();

                FormattedDocument formattedDocument = SwordContentFacade.getInstance().readHtmlText(document, key,
                        200);
                text = formattedDocument.getHtmlPassage();
                notesList = formattedDocument.getNotesList();

                if (StringUtils.isEmpty(text)) {
                    text = NO_CONTENT;
                }

                displayedBible = document;
                displayedVerse = key;

            } catch (Exception e) {
                Log.e(TAG, "Error getting bible text", e);
                text = "Error getting bible text: " + e.getMessage();
            } catch (OutOfMemoryError oom) {
                Log.e(TAG, "Out of memory error", oom);
                System.gc();
                text = "Error: document section is too large.";
            }
            return text;
        }

        protected void onPostExecute(String htmlFromDoInBackground) {
            Log.d(TAG, "Loading html:" + htmlFromDoInBackground);
            showText(htmlFromDoInBackground, verseNo, yScreenOffsetRatio);
            PassageChangeMediator.getInstance().contentChangeFinished();
        }
    }

    private void showText(String text, int verseNo, float yOffsetRatio) {
        if (bibleWebView != null) {
            bibleWebView.show(text, verseNo, yOffsetRatio);
        } else {
            Log.w(TAG, "Bible web view not yet registered");
        }
    }

    public List<Note> getNotesList() {
        return notesList;
    }
}