michael@0: /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
michael@0:  * ***** BEGIN LICENSE BLOCK *****
michael@0:  *
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/.
michael@0:  *
michael@0:  * ***** END LICENSE BLOCK ***** */
michael@0: 
michael@0: package org.mozilla.gecko;
michael@0: 
michael@0: import java.util.LinkedList;
michael@0: 
michael@0: import org.json.JSONArray;
michael@0: import org.json.JSONException;
michael@0: import org.json.JSONObject;
michael@0: 
michael@0: import android.util.Log;
michael@0: 
michael@0: public abstract class SessionParser {
michael@0:     private static final String LOGTAG = "GeckoSessionParser";
michael@0: 
michael@0:     public class SessionTab {
michael@0:         final private String mTitle;
michael@0:         final private String mUrl;
michael@0:         final private JSONObject mTabObject;
michael@0:         private boolean mIsSelected;
michael@0: 
michael@0:         private SessionTab(String title, String url, boolean isSelected, JSONObject tabObject) {
michael@0:             mTitle = title;
michael@0:             mUrl = url;
michael@0:             mIsSelected = isSelected;
michael@0:             mTabObject = tabObject;
michael@0:         }
michael@0: 
michael@0:         public String getTitle() {
michael@0:             return mTitle;
michael@0:         }
michael@0: 
michael@0:         public String getUrl() {
michael@0:             return mUrl;
michael@0:         }
michael@0: 
michael@0:         public boolean isSelected() {
michael@0:             return mIsSelected;
michael@0:         }
michael@0: 
michael@0:         public JSONObject getTabObject() {
michael@0:             return mTabObject;
michael@0:         }
michael@0:     };
michael@0: 
michael@0:     abstract public void onTabRead(SessionTab tab);
michael@0: 
michael@0:     public void parse(String... sessionStrings) {
michael@0:         final LinkedList<SessionTab> sessionTabs = new LinkedList<SessionTab>();
michael@0:         int totalCount = 0;
michael@0:         int selectedIndex = -1;
michael@0:         try {
michael@0:             for (String sessionString : sessionStrings) {
michael@0:                 final JSONObject window = new JSONObject(sessionString).getJSONArray("windows").getJSONObject(0);
michael@0:                 final JSONArray tabs = window.getJSONArray("tabs");
michael@0:                 final int optSelected = window.optInt("selected", -1);
michael@0: 
michael@0:                 for (int i = 0; i < tabs.length(); i++) {
michael@0:                     final JSONObject tab = tabs.getJSONObject(i);
michael@0:                     final int index = tab.getInt("index");
michael@0:                     final JSONObject entry = tab.getJSONArray("entries").getJSONObject(index - 1);
michael@0:                     final String url = entry.getString("url");
michael@0: 
michael@0:                     String title = entry.optString("title");
michael@0:                     if (title.length() == 0) {
michael@0:                         title = url;
michael@0:                     }
michael@0: 
michael@0:                     totalCount++;
michael@0:                     boolean selected = false;
michael@0:                     if (optSelected == i+1) {
michael@0:                         selected = true;
michael@0:                         selectedIndex = totalCount;
michael@0:                     }
michael@0:                     sessionTabs.add(new SessionTab(title, url, selected, tab));
michael@0:                 }
michael@0:             }
michael@0:         } catch (JSONException e) {
michael@0:             Log.e(LOGTAG, "JSON error", e);
michael@0:             return;
michael@0:         }
michael@0: 
michael@0:         // If no selected index was found, select the first tab.
michael@0:         if (selectedIndex == -1 && sessionTabs.size() > 0) {
michael@0:             sessionTabs.getFirst().mIsSelected = true;
michael@0:         }
michael@0: 
michael@0:         for (SessionTab tab : sessionTabs) {
michael@0:             onTabRead(tab);
michael@0:         }
michael@0:     }
michael@0: }