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/*
This file is part of Subsonic.
Subsonic 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.
Subsonic 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 Subsonic. If not, see <http://www.gnu.org/licenses/>.
Copyright 2009 (C) Sindre Mehus
*/
package github.daneren2005.dsub.activity;
import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.Window;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import github.daneren2005.dsub.R;
import github.daneren2005.dsub.util.Util;
/**
* An HTML-based help screen with Back and Done buttons at the bottom.
*
* @author Sindre Mehus
*/
public final class HelpActivity extends Activity {
private WebView webView;
private Button backButton;
@Override
protected void onCreate(Bundle bundle) {
super.onCreate(bundle);
getWindow().requestFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setContentView(R.layout.help);
webView = (WebView) findViewById(R.id.help_contents);
webView.getSettings().setJavaScriptEnabled(true);
webView.setWebViewClient(new HelpClient());
if (bundle != null) {
webView.restoreState(bundle);
} else {
webView.loadUrl(getResources().getString(R.string.help_url));
}
backButton = (Button) findViewById(R.id.help_back);
backButton.setOnClickListener(new Button.OnClickListener() {
@Override
public void onClick(View view) {
webView.goBack();
}
});
Button doneButton = (Button) findViewById(R.id.help_close);
doneButton.setOnClickListener(new Button.OnClickListener() {
@Override
public void onClick(View view) {
finish();
}
});
}
@Override
public void onResume() {
super.onResume();
}
@Override
protected void onSaveInstanceState(Bundle state) {
webView.saveState(state);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (webView.canGoBack()) {
webView.goBack();
return true;
}
}
return super.onKeyDown(keyCode, event);
}
private final class HelpClient extends WebViewClient {
@Override
public void onLoadResource(WebView webView, String url) {
setProgressBarIndeterminateVisibility(true);
setTitle(getResources().getString(R.string.help_loading));
super.onLoadResource(webView, url);
}
@Override
public void onPageFinished(WebView view, String url) {
setProgressBarIndeterminateVisibility(false);
setTitle(view.getTitle());
backButton.setEnabled(view.canGoBack());
}
@Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
Util.toast(HelpActivity.this, description);
}
}
}
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