WifiPreferencesFragment.java

/*
 * Copyright (c) 2015, Nils Braden
 *
 * This file is part of ttrss-reader-fork. This program 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.
 *
 * This program 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 this program; If
 * not, see http://www.gnu.org/licenses/.
 */

package org.ttrssreader.gui.fragments;

import org.ttrssreader.R;
import org.ttrssreader.gui.WifiPreferencesActivity;
import org.ttrssreader.preferences.Constants;

import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.CheckBoxPreference;
import android.preference.Preference;
import android.preference.PreferenceCategory;
import android.preference.PreferenceFragment;
import android.preference.PreferenceManager;
import android.util.Log;

public class WifiPreferencesFragment extends PreferenceFragment {

	private static final String TAG = WifiPreferencesFragment.class.getSimpleName();

	private static final String PREFS_MAIN_TOP = "prefs_main_top";
	private static final String PREFS_HTTP = "prefs_http";
	private static final String PREFS_SSL = "prefs_ssl";

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setHasOptionsMenu(true);

		String ssid = getArguments().getString(WifiPreferencesActivity.KEY_SSID);
		String cat = getArguments().getString("cat");

		if (PREFS_MAIN_TOP.equals(cat)) addPreferencesFromResource(R.xml.prefs_main_top);
		if (PREFS_HTTP.equals(cat)) addPreferencesFromResource(R.xml.prefs_http);
		if (PREFS_SSL.equals(cat)) addPreferencesFromResource(R.xml.prefs_ssl);

		initDynamicConnectionPrefs(ssid, PREFS_MAIN_TOP.equals(cat));
	}

	private void initDynamicConnectionPrefs(String ssid, boolean addEnableWifiPref) {
		if (getPreferenceScreen().getPreferenceCount() != 1) return;
		if (!(getPreferenceScreen().getPreference(0) instanceof PreferenceCategory)) return;

		PreferenceCategory category = (PreferenceCategory) getPreferenceScreen().getPreference(0);
		SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity());

		for (int i = 0; i < category.getPreferenceCount(); i++) {
			Preference pref = category.getPreference(i);

			String oldKey = pref.getKey();
			String newKey = ssid + oldKey;

			pref.setKey(newKey);

			Object defaultValue = null;
			if (prefs.getAll().containsKey(newKey)) defaultValue = prefs.getAll().get(newKey);
			pref.setDefaultValue(defaultValue);

			// Key of dependency has probably been renamed. Beware: This might stop working if dependencies are
			// added in another order.
			if (pref.getDependency() != null) pref.setDependency(ssid + pref.getDependency());

			// Remove and add again to reinitialize default values
			category.removePreference(pref);
			category.addPreference(pref);
			Log.d(TAG, String.format("  oldKey: \"%s\" newKey: \"%s\"", oldKey, newKey));
		}

		if (addEnableWifiPref) {
			String key = ssid + Constants.ENABLE_WIFI_BASED_SUFFIX;
			CheckBoxPreference enableWifiPref = new CheckBoxPreference(getActivity());
			enableWifiPref.setKey(key);
			enableWifiPref.setTitle(R.string.ConnectionWifiPrefEnableTitle);
			enableWifiPref.setSummaryOn(R.string.ConnectionWifiPrefEnabledSummary);
			enableWifiPref.setSummaryOff(R.string.ConnectionWifiPrefDisbledSummary);

			Object defaultValue = null;
			if (prefs.getAll().containsKey(key)) defaultValue = prefs.getAll().get(key);
			enableWifiPref.setDefaultValue(defaultValue);

			category.addPreference(enableWifiPref);
		}
	}
}