/*
* Copyright 2012 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.android.apps.iosched.util;
import com.google.android.apps.iosched.R;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.text.Html;
import android.text.SpannableString;
import android.text.SpannableStringBuilder;
import android.text.method.LinkMovementMethod;
import android.text.style.ClickableSpan;
import android.view.LayoutInflater;
import android.view.View;
import android.webkit.WebView;
import android.widget.TextView;
/**
* A set of helper methods for showing contextual help information in the app.
*/
public class HelpUtils {
public static boolean hasSeenTutorial(final Context context, String id) {
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
return sp.getBoolean("seen_tutorial_" + id, false);
}
private static void setSeenTutorial(final Context context, final String id) {
//noinspection unchecked
new AsyncTask<Void, Void, Void>() {
@Override
protected Void doInBackground(Void... voids) {
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
sp.edit().putBoolean("seen_tutorial_" + id, true).commit();
return null;
}
}.execute();
}
public static void maybeShowAddToScheduleTutorial(FragmentActivity activity) {
if (hasSeenTutorial(activity, "add_to_schedule")) {
return;
}
// DialogFragment.show() will take care of adding the fragment
// in a transaction. We also want to remove any currently showing
// dialog, so make our own transaction and take care of that here.
FragmentManager fm = activity.getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
Fragment prev = fm.findFragmentByTag("dialog_add_to_schedule");
if (prev != null) {
ft.remove(prev);
}
ft.addToBackStack(null);
new AddToScheduleTutorialDialog().show(ft, "dialog_add_to_schedule");
setSeenTutorial(activity, "add_to_schedule");
}
public static class AddToScheduleTutorialDialog extends DialogFragment implements
Html.ImageGetter {
public AddToScheduleTutorialDialog() {
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
LayoutInflater layoutInflater = (LayoutInflater) getActivity().getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
TextView tutorialBodyView = (TextView) layoutInflater.inflate(
R.layout.dialog_tutorial_message, null);
tutorialBodyView.setText(
Html.fromHtml(getString(R.string.help_add_to_schedule), this, null));
tutorialBodyView.setContentDescription(
Html.fromHtml(getString(R.string.help_add_to_schedule_alt)));
return new AlertDialog.Builder(getActivity())
.setView(tutorialBodyView)
.setPositiveButton(R.string.ok,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int whichButton) {
dialog.dismiss();
}
}
)
.create();
}
@Override
public Drawable getDrawable(String url) {
if ("add_to_schedule".equals(url)) {
Resources res = getActivity().getResources();
Drawable d = res.getDrawable(R.drawable.help_add_to_schedule);
d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
return d;
}
return null;
}
}
public static void showAbout(FragmentActivity activity) {
Intent intent = new Intent("SHOW_ABOUT");
activity.startActivity(intent);
}
public static class AboutDialog extends DialogFragment {
private static final String VERSION_UNAVAILABLE = "N/A";
public AboutDialog() {
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Get app version
PackageManager pm = getActivity().getPackageManager();
String packageName = getActivity().getPackageName();
String versionName;
try {
PackageInfo info = pm.getPackageInfo(packageName, 0);
versionName = info.versionName;
} catch (PackageManager.NameNotFoundException e) {
versionName = VERSION_UNAVAILABLE;
}
// Build the about body view and append the link to see OSS licenses
SpannableStringBuilder aboutBody = new SpannableStringBuilder();
aboutBody.append(Html.fromHtml(getString(R.string.about_body, versionName)));
SpannableString licensesLink = new SpannableString(getString(R.string.about_licenses));
licensesLink.setSpan(new ClickableSpan() {
@Override
public void onClick(View view) {
HelpUtils.showOpenSourceLicenses(getActivity());
}
}, 0, licensesLink.length(), 0);
aboutBody.append("\n\n");
aboutBody.append(licensesLink);
SpannableString eulaLink = new SpannableString(getString(R.string.about_eula));
eulaLink.setSpan(new ClickableSpan() {
@Override
public void onClick(View view) {
HelpUtils.showEula(getActivity());
}
}, 0, eulaLink.length(), 0);
aboutBody.append("\n\n");
aboutBody.append(eulaLink);
LayoutInflater layoutInflater = (LayoutInflater) getActivity().getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
TextView aboutBodyView = (TextView) layoutInflater.inflate(R.layout.dialog_about, null);
aboutBodyView.setText(aboutBody);
aboutBodyView.setMovementMethod(new LinkMovementMethod());
return new AlertDialog.Builder(getActivity())
.setTitle(R.string.title_about)
.setView(aboutBodyView)
.setPositiveButton(R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.dismiss();
}
}
)
.create();
}
}
public static void showOpenSourceLicenses(FragmentActivity activity) {
FragmentManager fm = activity.getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
Fragment prev = fm.findFragmentByTag("dialog_licenses");
if (prev != null) {
ft.remove(prev);
}
ft.addToBackStack(null);
new OpenSourceLicensesDialog().show(ft, "dialog_licenses");
}
public static class OpenSourceLicensesDialog extends DialogFragment {
public OpenSourceLicensesDialog() {
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
WebView webView = new WebView(getActivity());
webView.loadUrl("file:///android_asset/licenses.html");
return new AlertDialog.Builder(getActivity())
.setTitle(R.string.about_licenses)
.setView(webView)
.setPositiveButton(R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.dismiss();
}
}
)
.create();
}
}
public static void showEula(FragmentActivity activity) {
FragmentManager fm = activity.getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
Fragment prev = fm.findFragmentByTag("dialog_eula");
if (prev != null) {
ft.remove(prev);
}
ft.addToBackStack(null);
new EulaDialog().show(ft, "dialog_eula");
}
public static class EulaDialog extends DialogFragment {
public EulaDialog() {
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
int padding = getResources().getDimensionPixelSize(R.dimen.content_padding_normal);
TextView eulaTextView = new TextView(getActivity());
eulaTextView.setText(Html.fromHtml(getString(R.string.eula_text)));
eulaTextView.setMovementMethod(LinkMovementMethod.getInstance());
eulaTextView.setPadding(padding, padding, padding, padding);
return new AlertDialog.Builder(getActivity())
.setTitle(R.string.about_eula)
.setView(eulaTextView)
.setPositiveButton(R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.dismiss();
}
}
)
.create();
}
}
}