--- /dev/null
+/*
+ * Copyright © 2016-2022 Soren Stoutner <soren@stoutner.com>.
+ *
+ * This file is part of Privacy Browser Android <https://www.stoutner.com/privacy-browser-android>.
+ *
+ * Privacy Browser Android 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.
+ *
+ * Privacy Browser Android 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 Privacy Browser Android. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.stoutner.privacybrowser.fragments
+
+import android.content.Intent
+import android.content.res.Configuration
+import android.net.Uri
+import android.os.Build
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.webkit.WebResourceRequest
+import android.webkit.WebResourceResponse
+import android.webkit.WebView
+import android.webkit.WebViewClient
+
+import androidx.fragment.app.Fragment
+import androidx.webkit.WebSettingsCompat
+import androidx.webkit.WebViewAssetLoader
+import androidx.webkit.WebViewAssetLoader.AssetsPathHandler
+import androidx.webkit.WebViewFeature
+
+import com.stoutner.privacybrowser.R
+
+// Define the class constants.
+private const val TAB_NUMBER = "tab_number"
+private const val SCROLL_Y = "scroll_y"
+
+class GuideWebViewFragment : Fragment() {
+ // Define the class variables.
+ private var tabNumber = 0
+
+ // Declare the class views.
+ private lateinit var webViewLayout: View
+
+ companion object {
+ fun createTab(tabNumber: Int): GuideWebViewFragment {
+ // Create an arguments bundle.
+ val argumentsBundle = Bundle()
+
+ // Store the tab number in the bundle.
+ argumentsBundle.putInt(TAB_NUMBER, tabNumber)
+
+ // Create a new instance of the tab fragment.
+ val guideWebViewFragment = GuideWebViewFragment()
+
+ // Add the arguments bundle to the fragment.
+ guideWebViewFragment.arguments = argumentsBundle
+
+ // Return the new fragment.
+ return guideWebViewFragment
+ }
+ }
+
+ override fun onCreate(savedInstanceState: Bundle?) {
+ // Run the default commands.
+ super.onCreate(savedInstanceState)
+
+ // Store the tab number in a class variable.
+ tabNumber = requireArguments().getInt(TAB_NUMBER)
+ }
+
+ override fun onCreateView(layoutInflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+ // Inflate the layout. The fragment will take care of attaching the root automatically.
+ webViewLayout = layoutInflater.inflate(R.layout.bare_webview, container, false)
+
+ // Get a handle for the tab WebView.
+ val tabWebView = webViewLayout as WebView
+
+ // Create a WebView asset loader.
+ val webViewAssetLoader = WebViewAssetLoader.Builder().addPathHandler("/assets/", AssetsPathHandler(requireContext())).build()
+
+ // Set a WebView client.
+ tabWebView.webViewClient = object : WebViewClient() {
+ // Send external links back to the main Privacy Browser WebView. The deprecated `shouldOverrideUrlLoading` must be used until API >= 24.
+ @Deprecated("Deprecated in Java")
+ override fun shouldOverrideUrlLoading(view: WebView, url: String): Boolean {
+ // Create an intent to view the URL.
+ val urlIntent = Intent(Intent.ACTION_VIEW)
+
+ // Add the URL to the intent.
+ urlIntent.data = Uri.parse(url)
+
+ // Make it so.
+ startActivity(urlIntent)
+
+ // Consume the click.
+ return true
+ }
+
+ // Process asset requests with the asset loader.
+ override fun shouldInterceptRequest(webView: WebView, webResourceRequest: WebResourceRequest): WebResourceResponse? {
+ // This allows using the `appassets.androidplatform.net` URL, which handles the loading of SVG files, which otherwise is prevented by the CORS policy.
+ return webViewAssetLoader.shouldInterceptRequest(webResourceRequest.url)
+ }
+ }
+
+ // Get the current theme status.
+ val currentThemeStatus = resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK
+
+ // Check to see if the app is in night mode. This can be removed once the minimum API >= 33.
+ if ((Build.VERSION.SDK_INT < 33) && (currentThemeStatus == Configuration.UI_MODE_NIGHT_YES) && WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK)) { // The app is in night mode.
+ // Apply the dark WebView theme.
+ @Suppress("DEPRECATION")
+ WebSettingsCompat.setForceDark(tabWebView.settings, WebSettingsCompat.FORCE_DARK_ON)
+ }
+
+ // Load the indicated tab. The tab numbers start at 0.
+ when (tabNumber) {
+ 0 -> tabWebView.loadUrl("https://appassets.androidplatform.net/assets/" + getString(R.string.android_asset_path) + "/guide_overview.html")
+ 1 -> tabWebView.loadUrl("https://appassets.androidplatform.net/assets/" + getString(R.string.android_asset_path) + "/guide_javascript.html")
+ 2 -> tabWebView.loadUrl("https://appassets.androidplatform.net/assets/" + getString(R.string.android_asset_path) + "/guide_local_storage.html")
+ 3 -> tabWebView.loadUrl("https://appassets.androidplatform.net/assets/" + getString(R.string.android_asset_path) + "/guide_user_agent.html")
+ 4 -> tabWebView.loadUrl("https://appassets.androidplatform.net/assets/" + getString(R.string.android_asset_path) + "/guide_requests.html")
+ 5 -> tabWebView.loadUrl("https://appassets.androidplatform.net/assets/" + getString(R.string.android_asset_path) + "/guide_domain_settings.html")
+ 6 -> tabWebView.loadUrl("https://appassets.androidplatform.net/assets/" + getString(R.string.android_asset_path) + "/guide_ssl_certificates.html")
+ 7 -> tabWebView.loadUrl("https://appassets.androidplatform.net/assets/" + getString(R.string.android_asset_path) + "/guide_proxies.html")
+ 8 -> tabWebView.loadUrl("https://appassets.androidplatform.net/assets/" + getString(R.string.android_asset_path) + "/guide_tracking_ids.html")
+ }
+
+ // Scroll the WebView if the saved instance state is not null.
+ if (savedInstanceState != null) {
+ tabWebView.post {
+ tabWebView.scrollY = savedInstanceState.getInt(SCROLL_Y)
+ }
+ }
+
+ // Return the formatted WebView layout.
+ return webViewLayout
+ }
+
+ override fun onSaveInstanceState(savedInstanceState: Bundle) {
+ // Run the default commands.
+ super.onSaveInstanceState(savedInstanceState)
+
+ // Get a handle for the tab WebView. A class variable cannot be used because it gets out of sync when restarting.
+ val tabWebView = webViewLayout as WebView?
+
+ // Save the scroll Y position if the tab WebView is not null, which can happen if a tab is not currently selected.
+ if (tabWebView != null) {
+ savedInstanceState.putInt(SCROLL_Y, tabWebView.scrollY)
+ }
+ }
+}
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projects / PrivacyBrowserAndroid.git / blobdiff