--- /dev/null
+/*
+ * Copyright 2020-2023 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.viewmodels
+
+import android.content.ContentResolver
+import android.text.SpannableStringBuilder
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+
+import com.stoutner.privacybrowser.backgroundtasks.GetHeadersBackgroundTask
+
+import java.net.Proxy
+import java.util.concurrent.ExecutorService
+
+class HeadersViewModel(private val urlString: String, private val userAgent: String, private val localeString: String, private val proxy: Proxy, private val contentResolver: ContentResolver,
+ private val executorService: ExecutorService): ViewModel() {
+ // Initialize the mutable live data variables.
+ private val mutableLiveDataSourceStringArray = MutableLiveData<Array<SpannableStringBuilder>>()
+ private val mutableLiveDataErrorString = MutableLiveData<String>()
+
+ // Initialize the view model.
+ init {
+ // Instantiate the get headers background task class.
+ val getSourceBackgroundTask = GetHeadersBackgroundTask()
+
+ // Get the headers.
+ executorService.execute { mutableLiveDataSourceStringArray.postValue(getSourceBackgroundTask.acquire(urlString, userAgent, localeString, proxy, contentResolver, this,
+ false)) }
+ }
+
+ // The headers observer.
+ fun observeHeaders(): LiveData<Array<SpannableStringBuilder>> {
+ // Return the source to the activity.
+ return mutableLiveDataSourceStringArray
+ }
+
+ // The error observer.
+ fun observeErrors(): LiveData<String> {
+ // Return any errors to the activity.
+ return mutableLiveDataErrorString
+ }
+
+ // The interface for returning the error from the background task
+ fun returnError(errorString: String) {
+ // Update the mutable live data error string.
+ mutableLiveDataErrorString.postValue(errorString)
+ }
+
+ // The workhorse that gets the headers.
+ fun updateHeaders(urlString: String, ignoreSslErrors: Boolean) {
+ // Reset the mutable live data error string. This prevents the snackbar from displaying later if the activity restarts.
+ mutableLiveDataErrorString.postValue("")
+
+ // Instantiate the get headers background task class.
+ val getSourceBackgroundTask = GetHeadersBackgroundTask()
+
+ // Get the headers.
+ executorService.execute { mutableLiveDataSourceStringArray.postValue(getSourceBackgroundTask.acquire(urlString, userAgent, localeString, proxy, contentResolver, this,
+ ignoreSslErrors)) }
+ }
+}