Add PasswordTextField Composable (taken from bitfireAT/davx5#437)

---------

Co-authored-by: Ricki Hirner <hirner@bitfire.at>

app/src/main/kotlin/at/bitfire/davdroid/ui/widget/PasswordTextField.kt

@@ -0,0 +1,105 @@
+package at.bitfire.davdroid.ui.widget
+
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material.Icon
+import androidx.compose.material.IconButton
+import androidx.compose.material.OutlinedTextField
+import androidx.compose.material.Text
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Visibility
+import androidx.compose.material.icons.filled.VisibilityOff
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.input.PasswordVisualTransformation
+import androidx.compose.ui.text.input.VisualTransformation
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import at.bitfire.davdroid.R
+
+@Composable
+fun PasswordTextField(
+    password: String,
+    labelText: String,
+    enabled: Boolean,
+    isError: Boolean,
+    onPasswordChange: (String) -> Unit
+) {
+    var passwordVisible by remember { mutableStateOf(false) }
+    OutlinedTextField(
+        value = password,
+        onValueChange = onPasswordChange,
+        label = { Text(labelText) },
+        isError = isError,
+        singleLine = true,
+        enabled = enabled,
+        visualTransformation = if (passwordVisible) VisualTransformation.None else PasswordVisualTransformation(),
+        keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Password),
+        trailingIcon = {
+            IconButton(onClick = { passwordVisible = !passwordVisible }) {
+                if (passwordVisible)
+                    Icon(Icons.Default.VisibilityOff, stringResource(R.string.login_password_hide))
+                else
+                    Icon(Icons.Default.Visibility, stringResource(R.string.login_password_show))
+            }
+        },
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(8.dp)
+    )
+}
+
+@Composable
+@Preview
+fun PasswordTextField_Sample() {
+    PasswordTextField(
+        password = "",
+        labelText = "labelText",
+        enabled = true,
+        isError = false,
+        onPasswordChange = {},
+    )
+}
+
+@Composable
+@Preview
+fun PasswordTextField_Sample_Filled() {
+    PasswordTextField(
+        password = "password",
+        labelText = "labelText",
+        enabled = true,
+        isError = false,
+        onPasswordChange = {},
+    )
+}
+
+@Composable
+@Preview
+fun PasswordTextField_Sample_Error() {
+    PasswordTextField(
+        password = "password",
+        labelText = "labelText",
+        enabled = true,
+        isError = true,
+        onPasswordChange = {},
+    )
+}
+
+@Composable
+@Preview
+fun PasswordTextField_Sample_Disabled() {
+    PasswordTextField(
+        password = "password",
+        labelText = "labelText",
+        enabled = false,
+        isError = false,
+        onPasswordChange = {},
+    )
+}

app/src/main/res/values/strings.xml

@@ -269,6 +269,8 @@
     <string name="login_email_address">Email address</string>
     <string name="login_email_address_error">Valid email address required</string>
     <string name="login_password">Password</string>
+    <string name="login_password_hide">Hide password</string>
+    <string name="login_password_show">Show password</string>
     <string name="login_password_required">Password required</string>
     <string name="login_type_url">Login with URL and user name</string>
     <string name="login_url_must_be_http_or_https">URL must begin with http(s)://</string>