de.nico.asura.activities.WebView2.java Source code

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Here is the source code for de.nico.asura.activities.WebView2.java

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package de.nico.asura.activities;

/* 
 * Author: Nico Alt
 * See the file "LICENSE" for the full license governing this code.
 */

import android.app.Activity;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.NavUtils;
import android.text.InputType;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.webkit.HttpAuthHandler;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.EditText;
import android.widget.LinearLayout;

import de.nico.asura.R;
import de.nico.asura.tools.Utils;

public final class WebView2 extends Activity {

    private static boolean withAuthentication;

    private static SharedPreferences prefs;
    private static final String sharedPrefDefault = "0";
    private static final String sharedPrefFiFi = "webView2_auth_fiFi";
    private static final String sharedPrefSeFi = "webView2_auth_seFi";

    private static String firstField;
    private static String secondField;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        withAuthentication = getResources().getBoolean(R.bool.menu_Web_2_auth);

        // Check password
        prefs = PreferenceManager.getDefaultSharedPreferences(this);
        firstField = prefs.getString(sharedPrefFiFi, sharedPrefDefault);
        secondField = prefs.getString(sharedPrefSeFi, sharedPrefDefault);

        if (withAuthentication && (firstField.equals(sharedPrefDefault) || secondField.equals(sharedPrefDefault))) {
            checkLogin();
        } else {
            openWebView();
        }

        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB) {
            getActionBar().setDisplayHomeAsUpEnabled(true);
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        if (withAuthentication) {
            getMenuInflater().inflate(R.menu.webview_auth, menu);
        }
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.action_reset:
            resetLogin();
            return true;

        case android.R.id.home:
            NavUtils.navigateUpFromSameTask(this);
            return true;

        default:
            return super.onOptionsItemSelected(item);
        }
    }

    private void openWebView() {
        setContentView(R.layout.webview);
        final WebView webView = (WebView) findViewById(R.id.webView_main);
        WebSettings settings = webView.getSettings();
        settings.setDomStorageEnabled(true);
        webView.setWebViewClient(new MyWebViewClient());
        webView.loadUrl(getString(R.string.menu_Web_2_url));
        webView.getSettings().setBuiltInZoomControls(true);
        webView.getSettings().setJavaScriptEnabled(getResources().getBoolean(R.bool.menu_Web_2_js));
    }

    private void checkLogin() {
        // Layout for Dialog
        final LinearLayout layout = new LinearLayout(this);
        layout.setOrientation(LinearLayout.VERTICAL);

        final EditText edit_name = new EditText(this);
        edit_name.setHint(getString(R.string.menu_Web_2_auth_fiFi));
        layout.addView(edit_name);

        final EditText edit_pass = new EditText(this);
        edit_pass.setHint(getString(R.string.menu_Web_2_auth_seFi));
        edit_pass.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
        layout.addView(edit_pass);

        final Builder builder = new Builder(this);
        builder.setTitle(getString(R.string.menu_Web_2_name)).setCancelable(false).setView(layout)
                .setPositiveButton(getString(android.R.string.ok), new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int whichButton) {
                        firstField = edit_name.getText().toString();
                        secondField = edit_pass.getText().toString();

                        // Nothing?
                        if (firstField.length() == 0 || secondField.length() == 0) {
                            Utils.makeShortToast(WebView2.this, getString(R.string.wrong));
                            checkLogin();
                            return;

                        }

                        final Editor editor = prefs.edit();
                        editor.putString(sharedPrefFiFi, firstField);
                        editor.putString(sharedPrefSeFi, secondField);
                        editor.apply();

                        openWebView();

                    }

                }).setNegativeButton(getString(android.R.string.cancel), new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int whichButton) {
                        WebView2.this.finish();

                    }

                }).show();
    }

    private void resetLogin() {
        final Editor editor = prefs.edit();
        editor.putString(sharedPrefFiFi, sharedPrefDefault);
        editor.putString(sharedPrefSeFi, sharedPrefDefault);
        editor.apply();
        checkLogin();
    }

    private class MyWebViewClient extends WebViewClient {
        @Override
        public void onPageFinished(WebView view, String url) {
            // Hide loading animation
            findViewById(R.id.loadingAnimation_main).setVisibility(View.GONE);
            // Show WebView
            findViewById(R.id.webView_main).setVisibility(View.VISIBLE);
        }

        @Override
        public void onReceivedHttpAuthRequest(WebView view, HttpAuthHandler handler, String host, String realm) {
            if (withAuthentication) {
                handler.proceed(firstField, secondField);
            }
        }

        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return false;
        }
    }
}