Android/folioreader/src/main/java/com/folioreader/util/HighlightUtil.java

   1 package com.folioreader.util;
   2
   3 import android.content.Context;
   4 import android.content.Intent;
   5 import android.os.Bundle;
   6 import android.support.v4.content.LocalBroadcastManager;
   7 import android.util.Log;
   8
   9 import com.folioreader.model.HighLight;
  10 import com.folioreader.model.HighlightImpl;
  11 import com.folioreader.model.sqlite.HighLightTable;
  12
  13 import org.json.JSONException;
  14 import org.json.JSONObject;
  15
  16 import java.util.ArrayList;
  17 import java.util.Arrays;
  18 import java.util.Calendar;
  19 import java.util.List;
  20
  21 /**
  22  * Created by priyank on 5/12/16.
  23  */
  24 public class HighlightUtil {
  25
  26     private static final String TAG = "HighlightUtil";
  27
  28     public static String createHighlightRangy(Context context,
  29                                               String content,
  30                                               String bookTitle,
  31                                               String pageId,
  32                                               int pageNo,
  33                                               String oldRangy) {
  34         try {
  35             JSONObject jObject = new JSONObject(content);
  36
  37             String rangy = jObject.getString("rangy");
  38             String textContent = jObject.getString("content");
  39             String color = jObject.getString("color");
  40
  41             String rangyHighlightElement = getRangyString(rangy, oldRangy);
  42
  43             HighlightImpl highlightImpl = new HighlightImpl();
  44             highlightImpl.setContent(textContent);
  45             highlightImpl.setType(color);
  46             highlightImpl.setPageNumber(pageNo);
  47             highlightImpl.setBookId(bookTitle);
  48             highlightImpl.setPageId(pageId);
  49             highlightImpl.setRangy(rangyHighlightElement);
  50             highlightImpl.setDate(Calendar.getInstance().getTime());
  51             // save highlight to database
  52             long id = HighLightTable.insertHighlight(highlightImpl);
  53             if (id != -1) {
  54                 highlightImpl.setId((int) id);
  55                 sendHighlightBroadcastEvent(context, highlightImpl, HighLight.HighLightAction.NEW);
  56             }
  57             return rangy;
  58         } catch (JSONException e) {
  59             Log.e(TAG, "createHighlightRangy failed", e);
  60         }
  61         return "";
  62     }
  63
  64     /**
  65      * function extracts rangy element corresponding to latest highlight.
  66      *
  67      * @param rangy    new rangy string generated after adding new highlight.
  68      * @param oldRangy rangy string before new highlight.
  69      * @return rangy element corresponding to latest element.
  70      */
  71     private static String getRangyString(String rangy, String oldRangy) {
  72         List<String> rangyList = getRangyArray(rangy);
  73         for (String firs : getRangyArray(oldRangy)) {
  74             if (rangyList.contains(firs)) {
  75                 rangyList.remove(firs);
  76             }
  77         }
  78         if (rangyList.size() >= 1) {
  79             return rangyList.get(0);
  80         } else {
  81             return "";
  82         }
  83     }
  84
  85     /**
  86      * function converts Rangy text into each individual element
  87      * splitting with '|'.
  88      *
  89      * @param rangy rangy test with format: type:textContent|start$end$id$class$containerId
  90      * @return ArrayList of each rangy element corresponding to each highlight
  91      */
  92     private static List<String> getRangyArray(String rangy) {
  93         List<String> rangyElementList = new ArrayList<>();
  94         rangyElementList.addAll(Arrays.asList(rangy.split("\\|")));
  95         if (rangyElementList.contains("type:textContent")) {
  96             rangyElementList.remove("type:textContent");
  97         } else if (rangyElementList.contains("")) {
  98             return new ArrayList<>();
  99         }
 100         return rangyElementList;
 101     }
 102
 103     public static String generateRangyString(String pageId) {
 104         List<String> rangyList = HighLightTable.getHighlightsForPageId(pageId);
 105         StringBuilder builder = new StringBuilder();
 106         if (!rangyList.isEmpty()) {
 107             builder.append("type:textContent");
 108             for (String rangy : rangyList) {
 109                 builder.append('|');
 110                 builder.append(rangy);
 111             }
 112         }
 113         return builder.toString();
 114     }
 115
 116     public static void sendHighlightBroadcastEvent(Context context,
 117                                                    HighlightImpl highlightImpl,
 118                                                    HighLight.HighLightAction action) {
 119         LocalBroadcastManager.getInstance(context).sendBroadcast(
 120                 getHighlightBroadcastIntent(highlightImpl, action));
 121     }
 122
 123     public static Intent getHighlightBroadcastIntent(HighlightImpl highlightImpl,
 124                                                      HighLight.HighLightAction modify) {
 125         Bundle bundle = new Bundle();
 126         bundle.putParcelable(HighlightImpl.INTENT, highlightImpl);
 127         bundle.putSerializable(HighLight.HighLightAction.class.getName(), modify);
 128         return new Intent(HighlightImpl.BROADCAST_EVENT).putExtras(bundle);
 129     }
 130 }