com.github.rutvijkumar.imagesearch.api.google.GoogleImageProvider.java Source code

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Here is the source code for com.github.rutvijkumar.imagesearch.api.google.GoogleImageProvider.java

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/***
    
The MIT License (MIT)
Copyright  2014 Rutvijkumar Shah
     
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the Software), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
     
The above copyright notice and this permission notice shall be included in all copies or substantial
portions of the Software.
     
THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    
***/

package com.github.rutvijkumar.imagesearch.api.google;

import java.util.List;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.net.Uri;
import android.util.Log;

import com.github.rutvijkumar.imagesearch.api.CallBack;
import com.github.rutvijkumar.imagesearch.api.ImageProvider;
import com.github.rutvijkumar.imagesearch.api.SearchFilter;
import com.github.rutvijkumar.imagesearch.api.types.ImageColor;
import com.github.rutvijkumar.imagesearch.api.types.ImageFileType;
import com.github.rutvijkumar.imagesearch.api.types.ImageSize;
import com.github.rutvijkumar.imagesearch.api.types.ImageType;
import com.github.rutvijkumar.imagesearch.models.ImageResult;
import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.JsonHttpResponseHandler;

public class GoogleImageProvider extends ImageProvider {

    private static String LOG_TAG = "GOOGLE_IMG_SEARCH";
    private static final String BASE_URL = "https://ajax.googleapis.com/ajax/services/search/images?v=1.0";
    private static final int PAGE_SIZE = 8;

    public GoogleImageProvider(SearchFilter filter) {
        super(filter);
    }

    private String params(int start) {
        StringBuilder urlBuilder = new StringBuilder();
        ImageColor imgColor = filter.getImageColor();
        ImageFileType imageFileType = filter.getImageFileType();
        ImageSize imageSize = filter.getImageSize();
        ImageType imageType = filter.getImageType();
        String site = filter.getSite();

        urlBuilder.append("rsz=" + PAGE_SIZE);
        urlBuilder.append("&start=" + start * 7 + "&");

        if (imgColor != null) {
            urlBuilder.append("imgcolor=" + imgColor.toString().toLowerCase());
            urlBuilder.append("&");
        }

        if (imageFileType != null) {
            urlBuilder.append("as_filetype=" + imageFileType.toString().toLowerCase());
            urlBuilder.append("&");
        }

        if (imageSize != null) {
            urlBuilder.append("imgsz=" + imageSize.toString().toLowerCase());
            urlBuilder.append("&");
        }

        if (imageType != null) {
            urlBuilder.append("imgtype=" + imageType.toString().toLowerCase());
            urlBuilder.append("&");
        }

        if (site != null) {
            urlBuilder.append("as_sitesearch=" + site);
        }

        return urlBuilder.toString();
    }

    protected String generateSearchURL(String keyword, int start) {

        return BASE_URL + "&" + params(start) + "&q=" + Uri.encode(keyword);
    }

    protected ImageResult parseJsonObject(JSONObject json) throws JSONException {
        ImageResult img = new ImageResult();
        img.setImageUrl(json.getString("url"));
        img.setThumbUrl(json.getString("tbUrl"));
        img.setTitle(json.getString("title"));
        return img;
    }

    @Override
    protected void process(final String url, final CallBack callback) {
        AsyncHttpClient client = new AsyncHttpClient();
        client.get(url, new JsonHttpResponseHandler() {

            @Override
            public void onSuccess(final JSONObject response) {

                JSONArray imageResults = null;
                List<ImageResult> results = null;
                try {

                    if (response.has("responseData")) {
                        JSONObject resData = response.getJSONObject("responseData");
                        if (resData != null && resData.has("results")) {
                            imageResults = resData.getJSONArray("results");
                            results = parseImageResults(imageResults);
                        }
                    }
                    callback.onResult(true, results, null);
                } catch (JSONException e) {
                    Log.e(LOG_TAG, "URL=" + url);
                    Log.e(LOG_TAG, "Response=+" + response.toString());
                    Log.e(LOG_TAG, "Exception while parsing google image response", e);
                }
            }

            @Override
            public void onFailure(int statusCode, Throwable e, JSONArray errorResponse) {
                //While testing I found onFailure is not getting fired at all 
                //even after simulating no network connection with airplane mode I dont see this call back getting executed.
                callback.onResult(false, null, errorResponse);
            }
        });
    }

    @Override
    protected int maxPagesSupported() {
        // TODO Auto-generated method stub
        return 8;
    }

}