--- /dev/null
+/*
+ * Copyright © 2019-2020,2022 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.annotation.SuppressLint
+import android.content.Context
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ProgressBar
+
+import androidx.fragment.app.Fragment
+
+import com.stoutner.privacybrowser.R
+import com.stoutner.privacybrowser.views.NestedScrollWebView
+
+import java.util.Calendar
+
+// Define the class constants.
+private const val CREATE_NEW_PAGE = "create_new_page"
+private const val PAGE_NUMBER = "page_number"
+private const val URL = "url"
+private const val SAVED_STATE = "saved_state"
+private const val SAVED_NESTED_SCROLL_WEBVIEW_STATE = "saved_nested_scroll_webview_state"
+
+class WebViewTabFragment : Fragment() {
+ // Define the public variables.
+ @JvmField // TODO. `@JvmField` can be removed once the entire project has been converted to Kotlin.
+ var fragmentId = Calendar.getInstance().timeInMillis
+
+ // The public interface is used to send information back to the parent activity.
+ interface NewTabListener {
+ @SuppressLint("ClickableViewAccessibility")
+ fun initializeWebView(nestedScrollWebView: NestedScrollWebView, pageNumber: Int, progressBar: ProgressBar, url: String, restoringState: Boolean)
+ }
+
+ // Declare the class variables.
+ private lateinit var newTabListener: NewTabListener
+
+ // Declare the class views.
+ private lateinit var nestedScrollWebView: NestedScrollWebView
+
+ companion object {
+ @JvmStatic // TODO. `@JvmStatic` can be removed once the entire project has been converted to Kotlin.
+ fun createPage(pageNumber: Int, url: String?): WebViewTabFragment {
+ // Create an arguments bundle.
+ val argumentsBundle = Bundle()
+
+ // Store the argument in the bundle.
+ argumentsBundle.putBoolean(CREATE_NEW_PAGE, true)
+ argumentsBundle.putInt(PAGE_NUMBER, pageNumber)
+ argumentsBundle.putString(URL, url)
+
+ // Create a new instance of the WebView tab fragment.
+ val webViewTabFragment = WebViewTabFragment()
+
+ // Add the arguments bundle to the fragment.
+ webViewTabFragment.arguments = argumentsBundle
+
+ // Return the new fragment.
+ return webViewTabFragment
+ }
+
+ @JvmStatic // TODO. `@JvmStatic` can be removed once the entire project has been converted to Kotlin.
+ fun restorePage(savedState: Bundle?, savedNestedScrollWebViewState: Bundle?): WebViewTabFragment {
+ // Create an arguments bundle
+ val argumentsBundle = Bundle()
+
+ // Store the saved states in the arguments bundle.
+ argumentsBundle.putBundle(SAVED_STATE, savedState)
+ argumentsBundle.putBundle(SAVED_NESTED_SCROLL_WEBVIEW_STATE, savedNestedScrollWebViewState)
+
+ // Create a new instance of the WebView tab fragment.
+ val webViewTabFragment = WebViewTabFragment()
+
+ // Add the arguments bundle to the fragment.
+ webViewTabFragment.arguments = argumentsBundle
+
+ // Return the new fragment.
+ return webViewTabFragment
+ }
+ }
+
+ override fun onAttach(context: Context) {
+ // Run the default commands.
+ super.onAttach(context)
+
+ // Get a handle for the new tab listener from the launching context.
+ newTabListener = context as NewTabListener
+ }
+
+ override fun onCreateView(layoutInflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+ // Check to see if the fragment is being restarted.
+ return if (savedInstanceState == null) { // The fragment is not being restarted. Load and configure a new fragment.
+ // Check to see if a new page is being created.
+ if (requireArguments().getBoolean(CREATE_NEW_PAGE)) { // A new page is being created.
+ // Get the variables from the arguments
+ val pageNumber = requireArguments().getInt(PAGE_NUMBER)
+ val url = requireArguments().getString(URL)!!
+
+ // Inflate the tab's WebView. Setting false at the end of inflater.inflate does not attach the inflated layout as a child of container.
+ // The fragment will take care of attaching the root automatically.
+ val newPageView = layoutInflater.inflate(R.layout.webview_framelayout, container, false)
+
+ // Get handles for the views.
+ nestedScrollWebView = newPageView.findViewById(R.id.nestedscroll_webview)
+ val progressBar = newPageView.findViewById<ProgressBar>(R.id.progress_bar)
+
+ // Store the WebView fragment ID in the nested scroll WebView.
+ nestedScrollWebView.webViewFragmentId = fragmentId
+
+ // Request the main activity initialize the WebView.
+ newTabListener.initializeWebView(nestedScrollWebView, pageNumber, progressBar, url, false)
+
+ // Return the new page view.
+ newPageView
+ } else { // A page is being restored.
+ // Get the saved states from the arguments.
+ val savedState = requireArguments().getBundle(SAVED_STATE)
+ val savedNestedScrollWebViewState = requireArguments().getBundle(SAVED_NESTED_SCROLL_WEBVIEW_STATE)!!
+
+ // Inflate the tab's WebView. Setting false at the end of inflater.inflate does not attach the inflated layout as a child of container.
+ // The fragment will take care of attaching the root automatically.
+ val newPageView = layoutInflater.inflate(R.layout.webview_framelayout, container, false)
+
+ // Get handles for the views.
+ nestedScrollWebView = newPageView.findViewById(R.id.nestedscroll_webview)
+ val progressBar = newPageView.findViewById<ProgressBar>(R.id.progress_bar)
+
+ // Store the WebView fragment ID in the nested scroll WebView.
+ nestedScrollWebView.webViewFragmentId = fragmentId
+
+ // Restore the nested scroll WebView state.
+ nestedScrollWebView.restoreNestedScrollWebViewState(savedNestedScrollWebViewState)
+
+ // Restore the WebView state.
+ nestedScrollWebView.restoreState(savedState!!)
+
+ // Initialize the WebView.
+ newTabListener.initializeWebView(nestedScrollWebView, 0, progressBar, "", true)
+
+ // Return the new page view.
+ newPageView
+ }
+ } else { // The fragment is being restarted.
+ // Return null. Otherwise, the fragment will be inflated and initialized by the OS on a restart, discarded, and then recreated with saved settings by Privacy Browser.
+ null
+ }
+ }
+}
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projects / PrivacyBrowserAndroid.git / blobdiff