Add custom Activity to show libraries licenses.
As Google's library for showing licences isn't open-source, this commit reimplements its main Activity. This is in prevision to having an OSS flavor of fenix. We chose to not introduce dependencies to third-party libraries such as AboutLibraries for now, and we'll stick to using Google's gradle plugin for the dependencies extraction. Fixes #7584 See also #162master
parent
a6481cc897
commit
2743c37b40
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@ -330,7 +330,6 @@ dependencies {
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implementation Deps.androidx_coordinatorlayout
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implementation Deps.sentry
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implementation Deps.osslicenses_library
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implementation Deps.leanplum_core
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implementation Deps.leanplum_fcm
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@ -228,13 +228,8 @@
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<activity android:name=".settings.account.AuthIntentReceiverActivity"
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android:exported="false" />
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<activity android:name="com.google.android.gms.oss.licenses.OssLicensesMenuActivity"
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android:exported="false"
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android:theme="@style/Theme.AppCompat.DayNight.DarkActionBar"/>
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<activity android:name="com.google.android.gms.oss.licenses.OssLicensesActivity"
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android:exported="false"
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android:theme="@style/Theme.AppCompat.DayNight.DarkActionBar"/>
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<activity android:name=".settings.about.AboutLibrariesActivity"
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android:exported="false" />
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<service android:name=".media.MediaService"
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android:exported="false" />
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@ -13,7 +13,6 @@ import android.view.ViewGroup
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import androidx.core.content.pm.PackageInfoCompat
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import androidx.fragment.app.Fragment
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import androidx.recyclerview.widget.DividerItemDecoration
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import com.google.android.gms.oss.licenses.OssLicensesMenuActivity
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import kotlinx.android.synthetic.main.fragment_about.*
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import org.mozilla.fenix.BrowserDirection
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import org.mozilla.fenix.BuildConfig
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@ -168,13 +167,8 @@ class AboutFragment : Fragment(), AboutPageListener {
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}
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private fun openLibrariesPage() {
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startActivity(Intent(context, OssLicensesMenuActivity::class.java))
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OssLicensesMenuActivity.setActivityTitle(
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getString(
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R.string.open_source_licenses_title,
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appName
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)
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)
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val intent = Intent(requireContext(), AboutLibrariesActivity::class.java)
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startActivity(intent)
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}
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override fun onAboutItemClicked(item: AboutItem) {
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@ -0,0 +1,120 @@
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.fenix.settings.about
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import android.graphics.Typeface
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import android.os.Bundle
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import android.text.util.Linkify
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import android.widget.ArrayAdapter
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import android.widget.ListView
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import android.widget.TextView
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import androidx.appcompat.app.AlertDialog
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import androidx.appcompat.app.AppCompatActivity
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import org.mozilla.fenix.R
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import java.nio.charset.Charset
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import java.util.Locale
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/**
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* Displays the licenses of all the libraries used by Fenix.
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*
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* This is a re-implementation of play-services-oss-licenses library.
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* We can't use the official implementation in the OSS flavor of Fenix
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* because it is proprietary and closed-source.
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*
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* There are popular FLOSS alternatives to Google's plugin and library
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* such as AboutLibraries (https://github.com/mikepenz/AboutLibraries)
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* but we considered the risk of introducing such third-party dependency
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* to Fenix too high. Therefore, we use Google's gradle plugin to
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* extract the dependencies and their licenses, and this activity
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* to show the extracted licenses to the end-user.
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*/
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class AboutLibrariesActivity : AppCompatActivity() {
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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val appName = getString(R.string.app_name)
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title = getString(R.string.open_source_licenses_title, appName)
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setContentView(R.layout.about_libraries_activity)
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setSupportActionBar(findViewById(R.id.toolbar))
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supportActionBar?.setDisplayHomeAsUpEnabled(true)
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supportActionBar?.setDisplayShowHomeEnabled(true)
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setupLibrariesListView()
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}
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override fun onSupportNavigateUp(): Boolean {
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onBackPressed()
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return true
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}
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private fun setupLibrariesListView() {
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val libraries = parseLibraries()
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val listView = findViewById<ListView>(R.id.about_libraries_listview)
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listView.adapter = ArrayAdapter(this, android.R.layout.simple_list_item_1, libraries)
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listView.setOnItemClickListener { _, _, position, _ ->
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showLicenseDialog(libraries[position])
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}
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}
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private fun parseLibraries(): List<LibraryItem> {
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/*
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The gradle plugin "oss-licenses-plugin" creates two "raw" resources:
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- third_party_licenses which is the binary concatenation of all the licenses text for
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all the libraries. License texts can either be an URL to a license file or just the
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raw text of the license.
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- third_party_licenses_metadata which contains one dependency per line formatted in
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the following way: "[start_offset]:[length] [name]"
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[start_offset] : first byte in third_party_licenses that contains the license
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text for this library.
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[length] : length of the license text for this library in
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third_party_licenses.
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[name] : either the name of the library, or its artifact name.
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See https://github.com/google/play-services-plugins/tree/master/oss-licenses-plugin
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*/
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val licensesData = resources
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.openRawResource(R.raw.third_party_licenses)
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.readBytes()
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val licensesMetadataReader = resources
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.openRawResource(R.raw.third_party_license_metadata)
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.bufferedReader()
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return licensesMetadataReader.use { reader -> reader.readLines() }.map { line ->
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val (section, name) = line.split(" ", limit = 2)
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val (startOffset, length) = section.split(":", limit = 2).map(String::toInt)
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val licenseData = licensesData.sliceArray(startOffset until startOffset + length)
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val licenseText = licenseData.toString(Charset.forName("UTF-8"))
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LibraryItem(name, licenseText)
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}.sortedBy { item -> item.name.toLowerCase(Locale.ROOT) }
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}
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private fun showLicenseDialog(libraryItem: LibraryItem) {
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val dialog = AlertDialog.Builder(this)
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.setTitle(libraryItem.name)
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.setMessage(libraryItem.license)
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.create()
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dialog.show()
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val textView = dialog.findViewById<TextView>(android.R.id.message)!!
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Linkify.addLinks(textView, Linkify.ALL)
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textView.linksClickable = true
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textView.textSize = LICENSE_TEXT_SIZE
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textView.typeface = Typeface.MONOSPACE
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}
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companion object {
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private const val LICENSE_TEXT_SIZE = 10F
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}
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}
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private class LibraryItem(val name: String, val license: String) {
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override fun toString(): String {
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return name
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}
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}
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@ -0,0 +1,25 @@
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<?xml version="1.0" encoding="utf-8"?>
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<!-- This Source Code Form is subject to the terms of the Mozilla Public
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- License, v. 2.0. If a copy of the MPL was not distributed with this
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- file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
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<RelativeLayout
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xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools"
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android:id="@+id/about_libraries"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:fillViewport="true"
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tools:context="org.mozilla.fenix.settings.about.AboutLibrariesActivity">
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<androidx.appcompat.widget.Toolbar
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android:id="@+id/toolbar"
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android:layout_width="match_parent"
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android:layout_height="?attr/actionBarSize"
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android:background="?attr/colorPrimary"
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android:elevation="4dp"
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android:theme="@style/ThemeOverlay.AppCompat.ActionBar" />
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<ListView
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:id="@+id/about_libraries_listview" />
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</RelativeLayout>
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@ -0,0 +1,45 @@
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.fenix.settings.about
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import android.widget.ListView
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import android.widget.TextView
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import org.junit.Assert.assertTrue
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import org.junit.Test
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import org.junit.runner.RunWith
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import org.mozilla.fenix.R
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import org.mozilla.fenix.helpers.FenixRobolectricTestRunner
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import org.robolectric.Robolectric
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import org.robolectric.Shadows.shadowOf
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import org.robolectric.shadows.ShadowAlertDialog
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@RunWith(FenixRobolectricTestRunner::class)
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class AboutLibrariesActivityTest {
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@Test
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fun `activity should display licenses`() {
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val activity = Robolectric.buildActivity(AboutLibrariesActivity::class.java).create().get()
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val listView = activity.findViewById<ListView>(R.id.about_libraries_listview)
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assertTrue(0 < listView.count)
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}
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@Test
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fun `item click should open license dialog`() {
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val activity = Robolectric.buildActivity(AboutLibrariesActivity::class.java).create().get()
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val listView = activity.findViewById<ListView>(R.id.about_libraries_listview)
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val listViewShadow = shadowOf(listView)
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listViewShadow.clickFirstItemContainingText("org.mozilla.geckoview:geckoview")
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val alertDialogShadow = ShadowAlertDialog.getLatestDialog()
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assertTrue(alertDialogShadow.isShowing)
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val alertDialogText = alertDialogShadow
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.findViewById<TextView>(android.R.id.message)
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.text
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.toString()
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assertTrue(alertDialogText.contains("MPL"))
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}
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}
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@ -10,7 +10,6 @@ object Versions {
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const val leakcanary = "2.4"
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const val leanplum = "5.4.0"
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const val osslicenses_plugin = "0.9.5"
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const val osslicenses_library = "17.0.0"
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const val detekt = "1.9.1"
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const val androidx_appcompat = "1.2.0-rc01"
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@ -59,7 +58,6 @@ object Deps {
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const val allopen = "org.jetbrains.kotlin:kotlin-allopen:${Versions.kotlin}"
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const val osslicenses_plugin = "com.google.android.gms:oss-licenses-plugin:${Versions.osslicenses_plugin}"
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const val osslicenses_library = "com.google.android.gms:play-services-oss-licenses:${Versions.osslicenses_library}"
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const val mozilla_concept_engine = "org.mozilla.components:concept-engine:${Versions.mozilla_android_components}"
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const val mozilla_concept_menu = "org.mozilla.components:concept-menu:${Versions.mozilla_android_components}"
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