From d9e122f6d2650eff818478fa40cb32074dce1daa Mon Sep 17 00:00:00 2001
From: ByteHamster <info@bytehamster.com>
Date: Sat, 9 Nov 2019 00:57:44 +0100
Subject: Added licenses screen

---
 .../preferences/AboutLicensesFragment.java         | 126 +++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 app/src/main/java/de/danoeh/antennapod/fragment/preferences/AboutLicensesFragment.java

(limited to 'app/src/main/java/de/danoeh/antennapod/fragment/preferences/AboutLicensesFragment.java')

diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/preferences/AboutLicensesFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/preferences/AboutLicensesFragment.java
new file mode 100644
index 000000000..536d11e01
--- /dev/null
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/preferences/AboutLicensesFragment.java
@@ -0,0 +1,126 @@
+package de.danoeh.antennapod.fragment.preferences;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.ListView;
+import android.widget.Toast;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AlertDialog;
+import androidx.fragment.app.ListFragment;
+import de.danoeh.antennapod.R;
+import de.danoeh.antennapod.activity.PreferenceActivity;
+import de.danoeh.antennapod.adapter.SimpleIconListAdapter;
+import de.danoeh.antennapod.core.util.IntentUtils;
+import io.reactivex.Single;
+import io.reactivex.SingleOnSubscribe;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.reactivex.disposables.Disposable;
+import io.reactivex.schedulers.Schedulers;
+import org.w3c.dom.NamedNodeMap;
+import org.w3c.dom.NodeList;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+
+public class AboutLicensesFragment extends ListFragment {
+    private Disposable licensesLoader;
+    private final ArrayList<LicenseItem> licenses = new ArrayList<>();
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        getListView().setDivider(null);
+
+        licensesLoader = Single.create((SingleOnSubscribe<ArrayList<LicenseItem>>) emitter -> {
+            licenses.clear();
+            InputStream stream = getContext().getAssets().open("licenses.xml");
+            DocumentBuilder docBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
+            NodeList libraryList = docBuilder.parse(stream).getElementsByTagName("library");
+            for (int i = 0; i < libraryList.getLength(); i++) {
+                NamedNodeMap lib = libraryList.item(i).getAttributes();
+                licenses.add(new LicenseItem(
+                        lib.getNamedItem("name").getTextContent(),
+                        String.format("By %s, %s license",
+                                lib.getNamedItem("author").getTextContent(),
+                                lib.getNamedItem("license").getTextContent()),
+                        null,
+                        lib.getNamedItem("website").getTextContent(),
+                        lib.getNamedItem("licenseText").getTextContent()));
+            }
+            emitter.onSuccess(licenses);
+        })
+        .subscribeOn(Schedulers.io())
+        .observeOn(AndroidSchedulers.mainThread())
+        .subscribe(
+                developers -> setListAdapter(new SimpleIconListAdapter<LicenseItem>(getContext(), developers)),
+                error -> Toast.makeText(getContext(), "Error while loading licenses", Toast.LENGTH_LONG).show()
+        );
+
+    }
+
+    private static class LicenseItem extends SimpleIconListAdapter.ListItem {
+        final String licenseUrl;
+        final String licenseTextFile;
+
+        LicenseItem(String title, String subtitle, String imageUrl, String licenseUrl, String licenseTextFile) {
+            super(title, subtitle, imageUrl);
+            this.licenseUrl = licenseUrl;
+            this.licenseTextFile = licenseTextFile;
+        }
+    }
+
+    @Override
+    public void onListItemClick(@NonNull ListView l, @NonNull View v, int position, long id) {
+        super.onListItemClick(l, v, position, id);
+
+        LicenseItem item = licenses.get(position);
+        CharSequence[] items = {"View website", "View license"};
+        new AlertDialog.Builder(getContext())
+                .setTitle(item.title)
+                .setItems(items, (dialog, which) -> {
+                    if (which == 0) {
+                        IntentUtils.openInBrowser(getContext(), item.licenseUrl);
+                    } else if (which == 1) {
+                        showLicenseText(item.licenseTextFile);
+                    }
+                }).show();
+    }
+
+    private void showLicenseText(String licenseTextFile) {
+        try {
+            BufferedReader reader = new BufferedReader(new InputStreamReader(
+                    getContext().getAssets().open(licenseTextFile)));
+            StringBuilder licenseText = new StringBuilder();
+            String line;
+            while ((line = reader.readLine()) != null) {
+                licenseText.append(line).append("\n");
+            }
+
+            new AlertDialog.Builder(getContext())
+                    .setMessage(licenseText)
+                    .show();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void onStop() {
+        super.onStop();
+        if (licensesLoader != null) {
+            licensesLoader.dispose();
+        }
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        ((PreferenceActivity) getActivity()).getSupportActionBar().setTitle(R.string.licenses);
+    }
+}
-- 
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