fr.renzo.wikipoff.ui.activities.ArticleActivity.java Source code

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Here is the source code for fr.renzo.wikipoff.ui.activities.ArticleActivity.java

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/*
    
Copyright 2014 "Renzokuken" (pseudonym, first committer of WikipOff project) at
https://github.com/conchyliculture/wikipoff
    
This file is part of WikipOff.
    
WikipOff is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
WikipOff is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with WikipOff.  If not, see <http://www.gnu.org/licenses/>.
    
 */
package fr.renzo.wikipoff.ui.activities;

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;

import android.annotation.SuppressLint;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.NavUtils;
import android.webkit.WebView;
import android.webkit.WebViewClient;

import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.SherlockActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;
import com.actionbarsherlock.widget.SearchView;

import fr.renzo.wikipoff.Article;
import fr.renzo.wikipoff.Database;
import fr.renzo.wikipoff.R;
import fr.renzo.wikipoff.WikipOff;

public class ArticleActivity extends SherlockActivity implements SearchView.OnQueryTextListener {

    @SuppressWarnings("unused")
    private static final String TAG = "ArticleActivity";
    private Database dbHandler;
    private WebView webview;
    private Article article;
    private String wanted_title;
    private SharedPreferences config;

    @SuppressLint("SetJavaScriptEnabled")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        ActionBar actionBar = getSupportActionBar();
        actionBar.setDisplayHomeAsUpEnabled(true);

        this.dbHandler = ((WikipOff) getApplication()).getDatabaseHandler(this);

        this.config = PreferenceManager.getDefaultSharedPreferences(this);
        ;

        setContentView(R.layout.activity_article);

        this.webview = (WebView) findViewById(R.id.article_webview);
        this.webview.getSettings().setJavaScriptEnabled(true);

        Intent source_intent = getIntent();
        wanted_title = source_intent.getStringExtra("article_title");
        this.article = dbHandler.searchArticleFromTitle(wanted_title);

        showHTML();
    }

    private void displayNewArticle(String title) {
        Intent myIntent = new Intent(this, ArticleActivity.class);
        myIntent.putExtra("article_title", title);
        startActivity(myIntent);
    }

    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.action_manage_databases:
            Intent ami = new Intent(this, ManageDatabasesActivity.class);
            startActivity(ami);
            return true;
        case R.id.action_settings:
            Intent i = new Intent(this, SettingsActivity.class);
            startActivity(i);
            return true;
        case R.id.action_webbrowser:
            Intent webIntent = new Intent(Intent.ACTION_VIEW);
            webIntent.setData(Uri.parse("http://" + dbHandler.lang + ".wikipedia.org/wiki/" + this.article.title));
            startActivity(webIntent);
            return true;
        case R.id.action_about:
            Intent i2 = new Intent(this, AboutActivity.class);
            startActivity(i2);
            return true;
        case android.R.id.home:
            NavUtils.navigateUpFromSameTask(this);
            return true;
        default:
            return super.onOptionsItemSelected(item);
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getSupportMenuInflater().inflate(R.menu.articlemenu, menu);
        SearchView searchView = new SearchView(getSupportActionBar().getThemedContext());

        searchView.setOnQueryTextListener(this);
        menu.add("Search").setActionView(searchView).setIcon(R.drawable.ic_action_search)
                .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM | MenuItem.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW);

        return true;
    }

    @Override
    public boolean onQueryTextSubmit(String query) {
        webview.findNext(true);
        return true;
    }

    @Override
    @SuppressWarnings("deprecation") // Because we want to work with API 14
    public boolean onQueryTextChange(String newText) {
        webview.findAll(newText);
        return true;
    }

    private void showHTML() {
        this.webview.setWebViewClient(new WebViewClient() {
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                String article_title = url;
                if (url.startsWith("file:///")) {
                    article_title = url.substring(8);
                }
                try {
                    displayNewArticle(URLDecoder.decode(article_title, "UTF-8"));
                } catch (UnsupportedEncodingException e) {
                    e.printStackTrace();
                }
                return true;
            }
        });

        String data = "<html><head>\n";
        if (this.article != null) {
            setTitle(capitalize(this.article.title));
            data += "<meta name=\"viewport\" content=\"width=device-width,  user-scalable=yes\">\n";
            data += "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">";
            data += "</head>";
            if (config.getBoolean(s(R.string.config_key_use_mathjax), true)) {
                data += "<script type=\"text/javascript\" src=\"" + s(R.string.link_to_mathjax) + "\"></script>\n";
            }
            data += "<body>";
            data += "<h1>" + capitalize(this.article.title) + "</h1>";
            data += this.article.text;

        } else {
            data += getString(R.string.html_message_no_article, wanted_title);
        }
        data += "</body></html>";
        this.webview.loadDataWithBaseURL("file:///android-assets", data, "text/html", "UTF-8", null);
    }

    private String capitalize(String text) {
        String res = "";
        if (text.length() > 0) {
            res = String.valueOf(text.charAt(0)).toUpperCase() + text.subSequence(1, text.length());
        } else {
            res = text.toUpperCase();
        }
        return res;
    }

    private String s(int i) {
        return this.getString(i);
    }
}