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package de.danoeh.antennapod.fragment;
import org.apache.commons.lang3.StringEscapeUtils;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.res.TypedArray;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebSettings.LayoutAlgorithm;
import android.webkit.WebView;
import com.actionbarsherlock.app.SherlockFragment;
import de.danoeh.antennapod.AppConfig;
import de.danoeh.antennapod.PodcastApp;
import de.danoeh.antennapod.R;
import de.danoeh.antennapod.feed.Feed;
import de.danoeh.antennapod.feed.FeedItem;
import de.danoeh.antennapod.feed.FeedManager;
/** Displays the description of a FeedItem in a Webview. */
public class ItemDescriptionFragment extends SherlockFragment {
private static final String TAG = "ItemDescriptionFragment";
private static final String ARG_FEED_ID = "arg.feedId";
private static final String ARG_FEEDITEM_ID = "arg.feedItemId";
private WebView webvDescription;
private FeedItem item;
private AsyncTask<Void, Void, Void> webViewLoader;
private String descriptionRef;
private String contentEncodedRef;
public static ItemDescriptionFragment newInstance(FeedItem item) {
ItemDescriptionFragment f = new ItemDescriptionFragment();
Bundle args = new Bundle();
args.putLong(ARG_FEED_ID, item.getFeed().getId());
args.putLong(ARG_FEEDITEM_ID, item.getId());
f.setArguments(args);
return f;
}
@SuppressLint("NewApi")
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if (AppConfig.DEBUG)
Log.d(TAG, "Creating view");
webvDescription = new WebView(getActivity());
if (PodcastApp.getThemeResourceId() == R.style.Theme_AntennaPod_Dark) {
if (Build.VERSION.SDK_INT >= 11
&& Build.VERSION.SDK_INT <= Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) {
webvDescription.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
}
webvDescription.setBackgroundColor(0);
}
webvDescription.getSettings().setUseWideViewPort(false);
webvDescription.getSettings().setLayoutAlgorithm(LayoutAlgorithm.SINGLE_COLUMN);
return webvDescription;
}
@Override
public void onDestroyView() {
super.onDestroyView();
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
if (AppConfig.DEBUG)
Log.d(TAG, "Fragment attached");
}
@Override
public void onDetach() {
super.onDetach();
if (AppConfig.DEBUG)
Log.d(TAG, "Fragment detached");
if (webViewLoader != null) {
webViewLoader.cancel(true);
}
}
@Override
public void onDestroy() {
super.onDestroy();
if (AppConfig.DEBUG)
Log.d(TAG, "Fragment destroyed");
if (webViewLoader != null) {
webViewLoader.cancel(true);
}
}
@SuppressLint("NewApi")
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (AppConfig.DEBUG)
Log.d(TAG, "Creating fragment");
FeedManager manager = FeedManager.getInstance();
Bundle args = getArguments();
long feedId = args.getLong(ARG_FEED_ID, -1);
long itemId = args.getLong(ARG_FEEDITEM_ID, -1);
if (feedId != -1 && itemId != -1) {
Feed feed = manager.getFeed(feedId);
item = manager.getFeedItem(itemId, feed);
} else {
Log.e(TAG, TAG + " was called with invalid arguments");
}
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
if (item != null) {
if (item.getDescription() == null
|| item.getContentEncoded() == null) {
Log.i(TAG, "Loading data");
FeedManager.getInstance().loadExtraInformationOfItem(
getActivity(), item,
new FeedManager.TaskCallback<String[]>() {
@Override
public void onCompletion(String[] result) {
if (result == null || result.length != 2) {
Log.e(TAG, "No description found");
} else {
descriptionRef = result[0];
contentEncodedRef = result[1];
}
startLoader();
}
});
} else {
contentEncodedRef = item.getContentEncoded();
descriptionRef = item.getDescription();
if (AppConfig.DEBUG)
Log.d(TAG, "Using cached data");
startLoader();
}
} else {
Log.e(TAG, "Error in onViewCreated: Item was null");
}
}
@Override
public void onResume() {
super.onResume();
}
@SuppressLint("NewApi")
private void startLoader() {
webViewLoader = createLoader();
if (android.os.Build.VERSION.SDK_INT > android.os.Build.VERSION_CODES.GINGERBREAD_MR1) {
webViewLoader.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
} else {
webViewLoader.execute();
}
}
/**
* Return the CSS style of the Webview.
*
* @param textColor
* the default color to use for the text in the webview. This
* value is inserted directly into the CSS String.
* */
private String getWebViewStyle(String textColor) {
final String WEBVIEW_STYLE = "<head><style type=\"text/css\"> * { color: %s; font-family: Helvetica; line-height: 1.5em; font-size: 12pt; } a { font-style: normal; text-decoration: none; font-weight: normal; color: #00A8DF; }</style></head>";
return String.format(WEBVIEW_STYLE, textColor);
}
private AsyncTask<Void, Void, Void> createLoader() {
return new AsyncTask<Void, Void, Void>() {
@Override
protected void onCancelled() {
super.onCancelled();
if (getSherlockActivity() != null) {
getSherlockActivity()
.setSupportProgressBarIndeterminateVisibility(false);
}
webViewLoader = null;
}
String data;
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// /webvDescription.loadData(url, "text/html", "utf-8");
webvDescription.loadDataWithBaseURL(null, data, "text/html",
"utf-8", "about:blank");
if (getSherlockActivity() != null) {
getSherlockActivity()
.setSupportProgressBarIndeterminateVisibility(false);
}
if (AppConfig.DEBUG)
Log.d(TAG, "Webview loaded");
webViewLoader = null;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
if (getSherlockActivity() != null) {
getSherlockActivity()
.setSupportProgressBarIndeterminateVisibility(true);
}
}
@Override
protected Void doInBackground(Void... params) {
if (AppConfig.DEBUG)
Log.d(TAG, "Loading Webview");
data = "";
if (contentEncodedRef == null && descriptionRef != null) {
data = descriptionRef;
} else {
data = StringEscapeUtils.unescapeHtml4(contentEncodedRef);
}
Activity activity = getActivity();
if (activity != null) {
TypedArray res = getActivity()
.getTheme()
.obtainStyledAttributes(
new int[] { android.R.attr.textColorPrimary });
int colorResource = res.getColor(0, 0);
String colorString = String.format("#%06X",
0xFFFFFF & colorResource);
Log.i(TAG, "text color: " + colorString);
res.recycle();
data = getWebViewStyle(colorString) + data;
} else {
cancel(true);
}
return null;
}
};
}
}
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