SearchResultFragment.java

/*******************************************************************************
 * Copyright 2013 PAR Works, Inc
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package com.parworks.mars.view.search;

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

import android.annotation.SuppressLint;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.LoaderManager.LoaderCallbacks;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;

import com.parworks.arcameraview.CaptureImageActivity;
import com.parworks.mars.R;
import com.parworks.mars.model.db.SiteInfoTable;
import com.parworks.mars.model.provider.MarsContentProvider;
import com.parworks.mars.view.search.SearchResultAdapter.ViewHolder;
import com.parworks.mars.view.siteexplorer.ExploreActivity;

@SuppressLint("ValidFragment")
public class SearchResultFragment extends Fragment implements LoaderCallbacks<Cursor> {

	private static final String TAG = "SearchResultFragment";
	private static final int SEARCH_SITE_INFO_LOADER_ID = 33;
	
	private List<String> siteIds;
	private SearchResultAdapter newAdapter;	
	private Button mAugmentAllButton;

	public SearchResultFragment() {
		super();
	}
	
	public SearchResultFragment(List<String> siteIds) {
		this.siteIds = siteIds;
	}

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		
		// init Loader for TrendingSites
		this.getLoaderManager().initLoader(SEARCH_SITE_INFO_LOADER_ID, null, this);		
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		View v = inflater.inflate(R.layout.fragment_search_result, null);
		mAugmentAllButton = (Button) v.findViewById(R.id.buttonAugmentAll);
		mAugmentAllButton.setVisibility(View.VISIBLE);
		mAugmentAllButton.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				Intent intent = new Intent(getActivity(),
						CaptureImageActivity.class);
				ArrayList<String> siteIdArrayList = new ArrayList<String>();
				siteIdArrayList.addAll(siteIds);
				intent.putStringArrayListExtra(CaptureImageActivity.SITE_LIST, siteIdArrayList);
				intent.putExtra(CaptureImageActivity.IS_AUGMENT_ATTR, true);
				startActivity(intent);
				
			}
		});
		
		// initialize search result		
		final ListView lv = (ListView) v.findViewById(R.id.searchResultList);
		lv.setOnItemClickListener(new OnItemClickListener() {
			@Override
			public void onItemClick(AdapterView<?> arg0, View view, int position, long arg3) {
				Intent i = new Intent(SearchResultFragment.this.getActivity(), ExploreActivity.class);
				i.putExtra(ExploreActivity.SITE_ID_ARGUMENT_KEY, ((ViewHolder) view.getTag()).textView.getText());
				startActivity(i);				
			}
		});				
		
		newAdapter = new SearchResultAdapter(this.getActivity());	
		if (siteIds != null) {
			for(String id : siteIds) {
			    newAdapter.add(new SearchResultItem(id, null));			  	
			}
		}
		lv.setAdapter(newAdapter);
		
		v.requestFocus();
		return v;
	}

	@Override
	public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
		if (siteIds == null || siteIds.size() == 0) {
			return null;
		}
		
		String[] projection = SiteInfoTable.ALL_COLUMNS;		
		// construct the select args
		String selection = getSelection(siteIds.size());
		String[] selectionArgs = new String[siteIds.size()]; 
		for(int i = 0; i < siteIds.size(); i++) {
			selectionArgs[i] = siteIds.get(i);
		}
		// qeury all the siteIds
		CursorLoader cursorLoader = new CursorLoader(this.getActivity(), 
				MarsContentProvider.CONTENT_URI_ALL_SITES, projection, selection, selectionArgs, null);
		return cursorLoader;
	}
	
	private static String getSelection(int args) {
	    StringBuilder sb = new StringBuilder(SiteInfoTable.COLUMN_SITE_ID + " IN  (");
	    boolean first = true;
	    for (int i = 0; i < args; i ++) {
	        if (first) {
	            first = false;
	        } else {
	            sb.append(',');
	        }
	        sb.append('?');
	    }
	    sb.append(')');
	    return sb.toString();
	}

	@Override
	public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
		Log.d(TAG, "Finished loading site info in search");
		if (data.getCount() == 0) {				  
		    return;				  	
		}
				
		Log.d(TAG, "Finished loading site info in search");
		while(!data.isAfterLast()) {				  	
		    String siteId = data.getString(				  	
		    		data.getColumnIndex(SiteInfoTable.COLUMN_SITE_ID));			  	
		    String posterUrl = data.getString(				  	
		    		data.getColumnIndex(SiteInfoTable.COLUMN_POSTER_IMAGE_URL));			
		    newAdapter.updateRecord(siteId, posterUrl);
			data.moveToNext();			  	
		}
	}

	@Override
	public void onLoaderReset(Loader<Cursor> loader) {

	}
}