Feat: Add WebDAV UI

Bug: #191

app/src/main/AndroidManifest.xml

@@ -217,6 +217,11 @@
             android:label="@string/storage_edit_smb_server_title_edit"
             android:theme="@style/Theme.MaterialFiles" />
 
+        <activity
+            android:name="me.zhanghai.android.files.storage.EditWebDavServerActivity"
+            android:label="@string/storage_edit_webdav_server_title_edit"
+            android:theme="@style/Theme.MaterialFiles" />
+
         <activity
             android:name="me.zhanghai.android.files.navigation.EditBookmarkDirectoryDialogActivity"
             android:label="@string/navigation_edit_bookmark_directory_title"

app/src/main/java/me/zhanghai/android/files/app/AppInitializers.kt

@@ -22,12 +22,14 @@ import me.zhanghai.android.files.storage.FtpServerAuthenticator
 import me.zhanghai.android.files.storage.SftpServerAuthenticator
 import me.zhanghai.android.files.storage.SmbServerAuthenticator
 import me.zhanghai.android.files.storage.StorageVolumeListLiveData
+import me.zhanghai.android.files.storage.WebDavServerAuthenticator
 import me.zhanghai.android.files.theme.custom.CustomThemeHelper
 import me.zhanghai.android.files.theme.night.NightModeHelper
 import java.util.Properties
 import me.zhanghai.android.files.provider.ftp.client.Client as FtpClient
 import me.zhanghai.android.files.provider.sftp.client.Client as SftpClient
 import me.zhanghai.android.files.provider.smb.client.Client as SmbClient
+import me.zhanghai.android.files.provider.webdav.client.Client as WebDavClient
 
 val appInitializers = listOf(
     ::initializeCrashlytics, ::disableHiddenApiChecks, ::initializeThreeTen,
@@ -75,6 +77,7 @@ private fun initializeFileSystemProviders() {
     FtpClient.authenticator = FtpServerAuthenticator
     SftpClient.authenticator = SftpServerAuthenticator
     SmbClient.authenticator = SmbServerAuthenticator
+    WebDavClient.authenticator = WebDavServerAuthenticator
 }
 
 private fun initializeLiveDataObjects() {

app/src/main/java/me/zhanghai/android/files/provider/webdav/WebDavFileSystemProvider.kt

@@ -110,7 +110,8 @@ object WebDavFileSystemProvider : FileSystemProvider(), PathObservableProvider,
         get() {
             val protocol = Protocol.fromScheme(scheme)
             val port = if (port != -1) port else protocol.defaultPort
-            return Authority(protocol, host, port, userInfo)
+            val username = userInfo.orEmpty()
+            return Authority(protocol, host, port, username)
         }
 
     @Throws(IOException::class)

app/src/main/java/me/zhanghai/android/files/provider/webdav/client/Authentication.kt

@@ -40,7 +40,7 @@ data class PasswordAuthentication(
     override fun createAuthenticatorInterceptor(authority: Authority): AuthenticatorInterceptor =
         object : AuthenticatorInterceptor {
             private val basicDigestAuthHandler = BasicDigestAuthHandler(
-                UrlUtils.hostToDomain(authority.host), authority.username!!, password
+                UrlUtils.hostToDomain(authority.host), authority.username, password
             )
 
             override fun authenticate(route: Route?, response: Response): Request? =

app/src/main/java/me/zhanghai/android/files/provider/webdav/client/Authority.kt

@@ -8,21 +8,19 @@ package me.zhanghai.android.files.provider.webdav.client
 import android.os.Parcelable
 import kotlinx.parcelize.Parcelize
 import me.zhanghai.android.files.provider.common.UriAuthority
+import me.zhanghai.android.files.util.takeIfNotEmpty
 
 @Parcelize
 data class Authority(
     val protocol: Protocol,
     val host: String,
     val port: Int,
-    val username: String?
+    val username: String
 ) : Parcelable {
-    init {
-        require(username == null || username.isNotEmpty()) { "Username cannot be empty" }
-    }
-
     fun toUriAuthority(): UriAuthority {
+        val userInfo = username.takeIfNotEmpty()
         val uriPort = port.takeIf { it != protocol.defaultPort }
-        return UriAuthority(username, host, uriPort)
+        return UriAuthority(userInfo, host, uriPort)
     }
 
     override fun toString(): String = toUriAuthority().toString()

app/src/main/java/me/zhanghai/android/files/storage/AddStorageDialogFragment.kt

@@ -64,7 +64,11 @@ class AddStorageDialogFragment : AppCompatDialogFragment() {
                 EditFtpServerActivity::class.createIntent().putArgs(EditFtpServerFragment.Args()),
             R.string.storage_add_storage_sftp_server to
                 EditSftpServerActivity::class.createIntent().putArgs(EditSftpServerFragment.Args()),
-            R.string.storage_add_storage_smb_server to AddLanSmbServerActivity::class.createIntent()
+            R.string.storage_add_storage_smb_server to
+                AddLanSmbServerActivity::class.createIntent(),
+            R.string.storage_add_storage_webdav_server to
+                EditWebDavServerActivity::class.createIntent()
+                    .putArgs(EditWebDavServerFragment.Args()),
         )
     }
 }

app/src/main/java/me/zhanghai/android/files/storage/EditWebDavServerActivity.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2024 Hai Zhang <dreaming.in.code.zh@gmail.com>
+ * All Rights Reserved.
+ */
+
+package me.zhanghai.android.files.storage
+
+import android.os.Bundle
+import android.view.View
+import androidx.fragment.app.commit
+import me.zhanghai.android.files.app.AppActivity
+import me.zhanghai.android.files.util.args
+import me.zhanghai.android.files.util.putArgs
+
+class EditWebDavServerActivity : AppActivity() {
+    private val args by args<EditWebDavServerFragment.Args>()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        // Calls ensureSubDecor().
+        findViewById<View>(android.R.id.content)
+        if (savedInstanceState == null) {
+            val fragment = EditWebDavServerFragment().putArgs(args)
+            supportFragmentManager.commit { add(android.R.id.content, fragment) }
+        }
+    }
+}