InfoFragment.java

/**
 * Copyright (C) 2013 by Raphael Michel under the MIT license:
 *
 * 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 de.geeksfactory.opacclient.frontend;

import android.annotation.SuppressLint;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;
import android.widget.TextView;

import org.json.JSONException;

import de.geeksfactory.opacclient.OpacClient;
import de.geeksfactory.opacclient.R;
import de.geeksfactory.opacclient.frontend.OpacActivity.AccountSelectedListener;
import de.geeksfactory.opacclient.objects.Account;

public class InfoFragment extends Fragment implements AccountSelectedListener {

    protected WebView wvInfo;
    protected OpacClient app;
    protected View view;

    public void load() {
        wvInfo = (WebView) view.findViewById(R.id.wvInfo);
        TextView tvErr = (TextView) view.findViewById(R.id.tvErr);
        wvInfo.loadData(getString(R.string.loading), "text/html", null);

        try {
            String infoUrl = app.getLibrary().getInformation();
            if (infoUrl == null || infoUrl.equals("null")) {
                wvInfo.setVisibility(View.GONE);
                tvErr.setVisibility(View.VISIBLE);
                tvErr.setText(R.string.info_unsupported);
            } else if (infoUrl.startsWith("http")) {
                wvInfo.loadUrl(infoUrl);
            } else {
                wvInfo.loadUrl(app.getLibrary().getData().getString("baseurl")
                        + infoUrl);
            }
        } catch (JSONException e) {
            e.printStackTrace();
            wvInfo.setVisibility(View.GONE);
            tvErr.setVisibility(View.VISIBLE);
            tvErr.setText(R.string.info_error);
        }
    }

    @SuppressWarnings("deprecation")
    @SuppressLint("SetJavaScriptEnabled")
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        view = inflater.inflate(R.layout.fragment_info, container, false);
        app = (OpacClient) getActivity().getApplication();

        setHasOptionsMenu(true);

        load();

        ((AppCompatActivity) getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        wvInfo = (WebView) view.findViewById(R.id.wvInfo);

        wvInfo.getSettings().setSupportZoom(true);
        wvInfo.getSettings().setJavaScriptEnabled(true);
        wvInfo.getSettings().setAppCacheMaxSize(5 * 1024 * 1024);
        wvInfo.getSettings().setAppCacheEnabled(true);
        wvInfo.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);

        wvInfo.setWebChromeClient(new WebChromeClient() {
            @Override
            public void onProgressChanged(WebView v, int progress) {
                ProgressBar Pbar = (ProgressBar) view
                        .findViewById(R.id.pbWebProgress);
                if (progress < 100 && Pbar.getVisibility() == View.GONE) {
                    Pbar.setVisibility(View.VISIBLE);
                }
                Pbar.setProgress(progress);
                if (progress == 100) {
                    Pbar.setVisibility(View.GONE);
                }
            }

        });
        wvInfo.setWebViewClient(new WebViewClient() {

            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                if (url.contains(app.getLibrary().getData()
                                    .optString("webviewcontain", "NOPE"))) {
                    return false;
                }
                if (getActivity() == null) {
                    return false;
                }
                Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
                startActivity(intent);
                return true;
            }

        });

        return view;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == R.id.action_refresh) {
            wvInfo.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
            load();
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onCreateOptionsMenu(android.view.Menu menu,
                                    MenuInflater inflater) {
        inflater.inflate(R.menu.activity_info, menu);
        super.onCreateOptionsMenu(menu, inflater);
    }

    @Override
    public void accountSelected(Account account) {
        load();
    }
}