com.ls.drupal8demo.ArticleFragment.java Source code

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Here is the source code for com.ls.drupal8demo.ArticleFragment.java

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/**
 * The MIT License (MIT)
 * Copyright (c) 2014 Lemberg Solutions Limited
 * 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.ls.drupal8demo;

import com.android.volley.VolleyError;
import com.ls.drupal.AbstractBaseDrupalEntity;
import com.ls.drupal.AbstractBaseDrupalEntity.OnEntityRequestListener;
import com.ls.drupal.DrupalClient;
import com.ls.drupal8demo.article.Article;
import com.ls.http.base.ResponseData;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;
import android.widget.Toast;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

public class ArticleFragment extends Fragment implements OnEntityRequestListener {

    private final static String ARTICLE_CONTENT_STUB = "%ARTICLE_BODY%";
    private final static String ARTICLE_TITLE_STUB = "%ARTICLE_TITLE%";
    private final static String ARTICLE_IMAGE_STUB = "%ARTICLE_IMAGE_URL%";

    private final static String PAGE_ID_KEY = "page_id";
    private final static String BLOG_IMAGE_KEY = "blog_image";
    private Article mPage;
    private DrupalClient mClient;

    private WebView mContent;
    private View mProgressView;

    public static ArticleFragment newInstance(String pageId, String blogImage) {
        ArticleFragment fragment = new ArticleFragment();
        Bundle args = new Bundle();
        args.putString(PAGE_ID_KEY, pageId);
        args.putString(BLOG_IMAGE_KEY, blogImage);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        String pageId = getArguments().getString(PAGE_ID_KEY);
        mClient = new DrupalClient(AppConstants.SERVER_BASE_URL, getActivity());
        mPage = new Article(mClient, pageId);
        mPage.pullFromServer(false, null, this);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        ViewGroup result = (ViewGroup) inflater.inflate(R.layout.fragment_article, container, false);
        mContent = (WebView) result.findViewById(R.id.contentView);
        mProgressView = result.findViewById(R.id.progressView);
        resetPageContent();
        return result;
    }

    private void resetPageContent() {
        if (mPage.getDrupalClient().getActiveRequestsCount() > 0) {
            showLoadingDialog();
        } else {
            dismissLoadingDialog();
        }

        if (mContent != null && mPage.getBody() != null) {
            String template = loadPageTemplate();
            String body = template.replaceFirst(ARTICLE_CONTENT_STUB, mPage.getBody());
            body = body.replaceAll(ARTICLE_TITLE_STUB, mPage.getTitle());

            String imageURL = getArguments().getString(BLOG_IMAGE_KEY);
            body = body.replaceAll(ARTICLE_IMAGE_STUB, imageURL);

            mContent.loadDataWithBaseURL("file:///android_asset/fonts", body, "text/html", mPage.getCharset(),
                    null);
        }
    }

    private String loadPageTemplate() {
        InputStream json = null;
        try {
            StringBuilder buf = new StringBuilder();
            json = getActivity().getAssets().open("blog.html");
            BufferedReader in = new BufferedReader(new InputStreamReader(json));
            String str;

            while ((str = in.readLine()) != null) {
                buf.append(str);
            }
            return buf.toString();

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (json != null) {
                try {
                    json.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return null;
    }

    // Request listener

    public void showLoadingDialog() {
        if (mProgressView != null) {
            mProgressView.setVisibility(View.VISIBLE);
        }
    }

    public void dismissLoadingDialog() {
        if (mProgressView != null) {
            mProgressView.setVisibility(View.GONE);
        }
    }

    @Override
    public void onRequestCompleted(AbstractBaseDrupalEntity entity, Object tag, ResponseData data) {
        this.resetPageContent();
    }

    @Override
    public void onRequestFailed(AbstractBaseDrupalEntity entity, Object tag, VolleyError error) {
        Toast.makeText(getActivity(), "Page fetch failed", Toast.LENGTH_SHORT).show();
        resetPageContent();
    }

    @Override
    public void onRequestCanceled(AbstractBaseDrupalEntity entity, Object tag) {
    }

    @Override
    public void onDestroy() {
        mClient.cancelAll();
        super.onDestroy();
    }
}