Allow constructing Root containers from HTMLElement objects.

97 files changed, 148 insertions, 128 deletions

diff --git a/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt b/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
index 2fc0320a..1ad97acc 100644
--- a/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
+++ b/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
@@ -88,7 +88,7 @@ interface WSpec : DomSpec {
 
     fun runW(code: (widget: Widget, element: Element?) -> Unit) {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val widget = Widget()
             widget.id = "test_id"
             root.add(widget)
diff --git a/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/dropdown/DropDownSpec.kt b/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/dropdown/DropDownSpec.kt
index ff4daea7..af35fa51 100644
--- a/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/dropdown/DropDownSpec.kt
+++ b/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/dropdown/DropDownSpec.kt
@@ -34,7 +34,7 @@ class DropDownSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val dd = DropDown("Dropdown", listOf("abc" to "#!/x", "def" to "#!/y"), "flag")
             root.add(dd)
             dd.toggle()
@@ -51,7 +51,7 @@ class DropDownSpec : DomSpec {
     @Test
     fun renderDropUp() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val dd = DropDown("Dropdown", listOf("abc" to "#!/x", "def" to "#!/y"), "flag").apply { dropup = true }
             root.add(dd)
             dd.toggle()
@@ -68,7 +68,7 @@ class DropDownSpec : DomSpec {
     @Test
     fun renderHeaderElement() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val dd = DropDown("Dropdown", listOf("abc" to DD.HEADER.option), "flag")
             root.add(dd)
             dd.toggle()
@@ -85,7 +85,7 @@ class DropDownSpec : DomSpec {
     @Test
     fun renderSeparatorElement() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val dd = DropDown("Dropdown", listOf("abc" to DD.SEPARATOR.option), "flag")
             root.add(dd)
             dd.toggle()
@@ -102,7 +102,7 @@ class DropDownSpec : DomSpec {
     @Test
     fun renderDisabledElement() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val dd = DropDown("Dropdown", listOf("abc" to DD.DISABLED.option), "flag")
             root.add(dd)
             dd.toggle()
@@ -119,7 +119,7 @@ class DropDownSpec : DomSpec {
     @Test
     fun toggle() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val dd = DropDown("Dropdown", listOf("abc" to "#!/x", "def" to "#!/y"), "flag")
             root.add(dd)
             val visible = dd.getElementJQuery()?.hasClass("open") ?: false
diff --git a/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/AlertSpec.kt b/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/AlertSpec.kt
index 807f837a..c3d17de9 100644
--- a/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/AlertSpec.kt
+++ b/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/AlertSpec.kt
@@ -36,7 +36,7 @@ class AlertSpec : DomSpec {
     @Test
     fun render() {
         run {
-            Root("test", true)
+            Root("test", fixed = true)
             Alert.show("Alert caption", "Alert content")
             val alert = document.getElementById("test")?.let { jQuery(it).find(".modal")[0] }
             assertNotNull(alert, "Should show alert window")
diff --git a/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/CloseIconSpec.kt b/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/CloseIconSpec.kt
index 2e3ea3ef..1893ce81 100644
--- a/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/CloseIconSpec.kt
+++ b/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/CloseIconSpec.kt
@@ -32,7 +32,7 @@ class CloseIconSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val ci = CloseIcon()
             root.add(ci)
             val element = document.getElementById("test")
diff --git a/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/ConfirmSpec.kt b/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/ConfirmSpec.kt
index dc734e10..875bf9e2 100644
--- a/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/ConfirmSpec.kt
+++ b/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/ConfirmSpec.kt
@@ -36,7 +36,7 @@ class ConfirmSpec : DomSpec {
     @Test
     fun render() {
         run {
-            Root("test", true)
+            Root("test", fixed = true)
             Confirm.show("Confirm caption", "Confirm content")
             val confirm = document.getElementById("test")?.let { jQuery(it).find(".modal")[0] }
             assertNotNull(confirm, "Should show confirm window")
diff --git a/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/ModalSpec.kt b/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/ModalSpec.kt
index 523abfd5..7149b163 100644
--- a/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/ModalSpec.kt
+++ b/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/modal/ModalSpec.kt
@@ -35,7 +35,7 @@ class ModalSpec : DomSpec {
     @Test
     fun render() {
         run {
-            Root("test", true)
+            Root("test", fixed = true)
             val modal = Modal("Modal")
             modal.show()
             val content = document.getElementById("test")?.let { jQuery(it).find(".modal-title").html() }
@@ -47,7 +47,7 @@ class ModalSpec : DomSpec {
     @Test
     fun toggle() {
         run {
-            Root("test", true)
+            Root("test", fixed = true)
             val modal = Modal("Modal")
             modal.toggle()
             val content = document.getElementById("test")?.let { jQuery(it).find(".modal-title").html() }
diff --git a/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/window/WindowSpec.kt b/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/window/WindowSpec.kt
index e87626ca..c79b9d32 100644
--- a/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/window/WindowSpec.kt
+++ b/kvision-modules/kvision-bootstrap/src/test/kotlin/test/pl/treksoft/kvision/window/WindowSpec.kt
@@ -32,7 +32,7 @@ class WindowSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val window = Window("Window title", isResizable = false)
             root.add(window)
             val id = window.id
diff --git a/kvision-modules/kvision-chart/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt b/kvision-modules/kvision-chart/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
index 37d7a9df..13c8531b 100644
--- a/kvision-modules/kvision-chart/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
+++ b/kvision-modules/kvision-chart/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
@@ -86,7 +86,7 @@ interface WSpec : DomSpec {
 
     fun runW(code: (widget: Widget, element: Element?) -> Unit) {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val widget = Widget()
             widget.id = "test_id"
             root.add(widget)
diff --git a/kvision-modules/kvision-chart/src/test/kotlin/test/pl/treksoft/kvision/chart/ChartCanvasSpec.kt b/kvision-modules/kvision-chart/src/test/kotlin/test/pl/treksoft/kvision/chart/ChartCanvasSpec.kt
index 6fae54ad..da83b989 100644
--- a/kvision-modules/kvision-chart/src/test/kotlin/test/pl/treksoft/kvision/chart/ChartCanvasSpec.kt
+++ b/kvision-modules/kvision-chart/src/test/kotlin/test/pl/treksoft/kvision/chart/ChartCanvasSpec.kt
@@ -36,7 +36,7 @@ class ChartCanvasSpec : DomSpec {
     @Test
     fun renderResponsive() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val chart = ChartCanvas(
                 configuration = Configuration(
                     ChartType.SCATTER,
@@ -56,7 +56,7 @@ class ChartCanvasSpec : DomSpec {
     @Test
     fun renderNotResponsive() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val chart = ChartCanvas(
                 300, 600,
                 configuration = Configuration(
diff --git a/kvision-modules/kvision-chart/src/test/kotlin/test/pl/treksoft/kvision/chart/ChartSpec.kt b/kvision-modules/kvision-chart/src/test/kotlin/test/pl/treksoft/kvision/chart/ChartSpec.kt
index 7974ea78..1fe73608 100644
--- a/kvision-modules/kvision-chart/src/test/kotlin/test/pl/treksoft/kvision/chart/ChartSpec.kt
+++ b/kvision-modules/kvision-chart/src/test/kotlin/test/pl/treksoft/kvision/chart/ChartSpec.kt
@@ -37,7 +37,7 @@ class ChartSpec : DomSpec {
     @Test
     fun renderResponsive() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val chart = Chart(
                 Configuration(
                     ChartType.SCATTER,
@@ -60,7 +60,7 @@ class ChartSpec : DomSpec {
     @Test
     fun renderNotResponsive() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val chart = Chart(
                 Configuration(
                     ChartType.SCATTER,
diff --git a/kvision-modules/kvision-datacontainer/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt b/kvision-modules/kvision-datacontainer/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
index 37d7a9df..13c8531b 100644
--- a/kvision-modules/kvision-datacontainer/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
+++ b/kvision-modules/kvision-datacontainer/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
@@ -86,7 +86,7 @@ interface WSpec : DomSpec {
 
     fun runW(code: (widget: Widget, element: Element?) -> Unit) {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val widget = Widget()
             widget.id = "test_id"
             root.add(widget)
diff --git a/kvision-modules/kvision-datacontainer/src/test/kotlin/test/pl/treksoft/kvision/data/DataContainerSpec.kt b/kvision-modules/kvision-datacontainer/src/test/kotlin/test/pl/treksoft/kvision/data/DataContainerSpec.kt
index 931294d5..556d3991 100644
--- a/kvision-modules/kvision-datacontainer/src/test/kotlin/test/pl/treksoft/kvision/data/DataContainerSpec.kt
+++ b/kvision-modules/kvision-datacontainer/src/test/kotlin/test/pl/treksoft/kvision/data/DataContainerSpec.kt
@@ -36,7 +36,7 @@ class DataContainerSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
 
             class Model(value: String) : BaseDataComponent() {
                 var value: String by obs(value)
diff --git a/kvision-modules/kvision-datetime/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt b/kvision-modules/kvision-datetime/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
index 37d7a9df..13c8531b 100644
--- a/kvision-modules/kvision-datetime/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
+++ b/kvision-modules/kvision-datetime/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
@@ -86,7 +86,7 @@ interface WSpec : DomSpec {
 
     fun runW(code: (widget: Widget, element: Element?) -> Unit) {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val widget = Widget()
             widget.id = "test_id"
             root.add(widget)
diff --git a/kvision-modules/kvision-datetime/src/test/kotlin/test/pl/treksoft/kvision/form/time/DateTimeInputSpec.kt b/kvision-modules/kvision-datetime/src/test/kotlin/test/pl/treksoft/kvision/form/time/DateTimeInputSpec.kt
index 69ab46ec..877cf650 100644
--- a/kvision-modules/kvision-datetime/src/test/kotlin/test/pl/treksoft/kvision/form/time/DateTimeInputSpec.kt
+++ b/kvision-modules/kvision-datetime/src/test/kotlin/test/pl/treksoft/kvision/form/time/DateTimeInputSpec.kt
@@ -34,7 +34,7 @@ class DateTimeInputSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val data = Date()
             val dti = DateTimeInput(value = data).apply {
                 placeholder = "place"
diff --git a/kvision-modules/kvision-datetime/src/test/kotlin/test/pl/treksoft/kvision/form/time/DateTimeSpec.kt b/kvision-modules/kvision-datetime/src/test/kotlin/test/pl/treksoft/kvision/form/time/DateTimeSpec.kt
index 19cefd86..b5e393bb 100644
--- a/kvision-modules/kvision-datetime/src/test/kotlin/test/pl/treksoft/kvision/form/time/DateTimeSpec.kt
+++ b/kvision-modules/kvision-datetime/src/test/kotlin/test/pl/treksoft/kvision/form/time/DateTimeSpec.kt
@@ -34,7 +34,7 @@ class DateTimeSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val data = Date()
             val ti = DateTime(value = data, label = "Label").apply {
                 placeholder = "place"
diff --git a/kvision-modules/kvision-redux/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt b/kvision-modules/kvision-redux/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
index 37d7a9df..13c8531b 100644
--- a/kvision-modules/kvision-redux/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
+++ b/kvision-modules/kvision-redux/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
@@ -86,7 +86,7 @@ interface WSpec : DomSpec {
 
     fun runW(code: (widget: Widget, element: Element?) -> Unit) {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val widget = Widget()
             widget.id = "test_id"
             root.add(widget)
diff --git a/kvision-modules/kvision-redux/src/test/kotlin/test/pl/treksoft/kvision/redux/StateBindingSpec.kt b/kvision-modules/kvision-redux/src/test/kotlin/test/pl/treksoft/kvision/redux/StateBindingSpec.kt
index 0271a956..5204402d 100644
--- a/kvision-modules/kvision-redux/src/test/kotlin/test/pl/treksoft/kvision/redux/StateBindingSpec.kt
+++ b/kvision-modules/kvision-redux/src/test/kotlin/test/pl/treksoft/kvision/redux/StateBindingSpec.kt
@@ -55,7 +55,7 @@ class StateBindingSpec : DomSpec {
     @Test
     fun stateBinding() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val store = createReduxStore(::stateReducer, State(10))
 
             val container = SimplePanel()
@@ -81,7 +81,7 @@ class StateBindingSpec : DomSpec {
     @Test
     fun stateUpdate() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val store = createReduxStore(::stateReducer, State(10))
 
             val container = SimplePanel()
diff --git a/kvision-modules/kvision-richtext/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt b/kvision-modules/kvision-richtext/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
index 37d7a9df..13c8531b 100644
--- a/kvision-modules/kvision-richtext/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
+++ b/kvision-modules/kvision-richtext/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
@@ -86,7 +86,7 @@ interface WSpec : DomSpec {
 
     fun runW(code: (widget: Widget, element: Element?) -> Unit) {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val widget = Widget()
             widget.id = "test_id"
             root.add(widget)
diff --git a/kvision-modules/kvision-richtext/src/test/kotlin/test/pl/treksoft/kvision/form/text/RichTextInputSpec.kt b/kvision-modules/kvision-richtext/src/test/kotlin/test/pl/treksoft/kvision/form/text/RichTextInputSpec.kt
index 21b7dc39..4ebf7b45 100644
--- a/kvision-modules/kvision-richtext/src/test/kotlin/test/pl/treksoft/kvision/form/text/RichTextInputSpec.kt
+++ b/kvision-modules/kvision-richtext/src/test/kotlin/test/pl/treksoft/kvision/form/text/RichTextInputSpec.kt
@@ -34,7 +34,7 @@ class RichTextInputSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val hai = RichTextInput(value = "abc").apply {
                 placeholder = "place"
                 id = "idti"
diff --git a/kvision-modules/kvision-richtext/src/test/kotlin/test/pl/treksoft/kvision/form/text/RichTextSpec.kt b/kvision-modules/kvision-richtext/src/test/kotlin/test/pl/treksoft/kvision/form/text/RichTextSpec.kt
index 844b7e94..1ea79790 100644
--- a/kvision-modules/kvision-richtext/src/test/kotlin/test/pl/treksoft/kvision/form/text/RichTextSpec.kt
+++ b/kvision-modules/kvision-richtext/src/test/kotlin/test/pl/treksoft/kvision/form/text/RichTextSpec.kt
@@ -34,7 +34,7 @@ class RichTextSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val hai = RichText(value = "abc", label = "Field").apply {
                 placeholder = "place"
                 id = "idti"
diff --git a/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt b/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
index 37d7a9df..13c8531b 100644
--- a/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
+++ b/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
@@ -86,7 +86,7 @@ interface WSpec : DomSpec {
 
     fun runW(code: (widget: Widget, element: Element?) -> Unit) {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val widget = Widget()
             widget.id = "test_id"
             root.add(widget)
diff --git a/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectInputSpec.kt b/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectInputSpec.kt
index 30f42e9c..bfd93900 100644
--- a/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectInputSpec.kt
+++ b/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectInputSpec.kt
@@ -34,7 +34,7 @@ class SelectInputSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val selectInput = SelectInput(listOf("test1" to "Test 1", "test2" to "Test 2"), "test1", true).apply {
                 liveSearch = true
                 placeholder = "Choose ..."
diff --git a/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectOptGroupSpec.kt b/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectOptGroupSpec.kt
index bd88f560..33ccc843 100644
--- a/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectOptGroupSpec.kt
+++ b/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectOptGroupSpec.kt
@@ -33,7 +33,7 @@ class SelectOptGroupSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val selectOptGroup = SelectOptGroup("Group", listOf("test1" to "Test 1", "test2" to "Test 2"), 2)
             root.add(selectOptGroup)
             val element = document.getElementById("test")
diff --git a/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectOptionSpec.kt b/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectOptionSpec.kt
index f7e07d42..33c36576 100644
--- a/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectOptionSpec.kt
+++ b/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectOptionSpec.kt
@@ -32,7 +32,7 @@ class SelectOptionSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val selectOption = SelectOption("testValue", "testLabel")
             root.add(selectOption)
             val element = document.getElementById("test")
diff --git a/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectSpec.kt b/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectSpec.kt
index eaccd551..9eddff81 100644
--- a/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectSpec.kt
+++ b/kvision-modules/kvision-select/src/test/kotlin/test/pl/treksoft/kvision/form/select/SelectSpec.kt
@@ -34,7 +34,7 @@ class SelectSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val select = Select(listOf("test1" to "Test 1", "test2" to "Test 2"), "test1", null, true, null, "Label").apply {
                 liveSearch = true
                 placeholder = "Choose ..."
diff --git a/kvision-modules/kvision-spinner/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt b/kvision-modules/kvision-spinner/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
index 37d7a9df..13c8531b 100644
--- a/kvision-modules/kvision-spinner/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
+++ b/kvision-modules/kvision-spinner/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
@@ -86,7 +86,7 @@ interface WSpec : DomSpec {
 
     fun runW(code: (widget: Widget, element: Element?) -> Unit) {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val widget = Widget()
             widget.id = "test_id"
             root.add(widget)
diff --git a/kvision-modules/kvision-spinner/src/test/kotlin/test/pl/treksoft/kvision/form/spinner/SpinnerInputSpec.kt b/kvision-modules/kvision-spinner/src/test/kotlin/test/pl/treksoft/kvision/form/spinner/SpinnerInputSpec.kt
index a240bfd8..467e48db 100644
--- a/kvision-modules/kvision-spinner/src/test/kotlin/test/pl/treksoft/kvision/form/spinner/SpinnerInputSpec.kt
+++ b/kvision-modules/kvision-spinner/src/test/kotlin/test/pl/treksoft/kvision/form/spinner/SpinnerInputSpec.kt
@@ -32,7 +32,7 @@ class SpinnerInputSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val si = SpinnerInput(value = 13).apply {
                 placeholder = "place"
                 id = "idti"
@@ -46,7 +46,7 @@ class SpinnerInputSpec : DomSpec {
     @Test
     fun spinUp() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val si = SpinnerInput(value = 13).apply {
                 placeholder = "place"
                 id = "idti"
@@ -61,7 +61,7 @@ class SpinnerInputSpec : DomSpec {
     @Test
     fun spinDown() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val si = SpinnerInput(value = 13).apply {
                 placeholder = "place"
                 id = "idti"
diff --git a/kvision-modules/kvision-spinner/src/test/kotlin/test/pl/treksoft/kvision/form/spinner/SpinnerSpec.kt b/kvision-modules/kvision-spinner/src/test/kotlin/test/pl/treksoft/kvision/form/spinner/SpinnerSpec.kt
index 30f12a93..928fe0b1 100644
--- a/kvision-modules/kvision-spinner/src/test/kotlin/test/pl/treksoft/kvision/form/spinner/SpinnerSpec.kt
+++ b/kvision-modules/kvision-spinner/src/test/kotlin/test/pl/treksoft/kvision/form/spinner/SpinnerSpec.kt
@@ -33,7 +33,7 @@ class SpinnerSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val ti = Spinner(value = 13, label = "Label").apply {
                 placeholder = "place"
                 name = "name"
@@ -59,7 +59,7 @@ class SpinnerSpec : DomSpec {
     @Test
     fun spinUp() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val si = Spinner(value = 13)
             root.add(si)
             assertEquals(13, si.value, "Should return initial value before spinUp")
@@ -71,7 +71,7 @@ class SpinnerSpec : DomSpec {
     @Test
     fun spinDown() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val si = Spinner(value = 13)
             root.add(si)
             assertEquals(13, si.value, "Should return initial value before spinDown")
diff --git a/kvision-modules/kvision-tabulator/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt b/kvision-modules/kvision-tabulator/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
index 37d7a9df..13c8531b 100644
--- a/kvision-modules/kvision-tabulator/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
+++ b/kvision-modules/kvision-tabulator/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
@@ -86,7 +86,7 @@ interface WSpec : DomSpec {
 
     fun runW(code: (widget: Widget, element: Element?) -> Unit) {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val widget = Widget()
             widget.id = "test_id"
             root.add(widget)
diff --git a/kvision-modules/kvision-tabulator/src/test/kotlin/test/pl/treksoft/kvision/tabulator/TabulatorSpec.kt b/kvision-modules/kvision-tabulator/src/test/kotlin/test/pl/treksoft/kvision/tabulator/TabulatorSpec.kt
index d6b33a78..1f49ee93 100644
--- a/kvision-modules/kvision-tabulator/src/test/kotlin/test/pl/treksoft/kvision/tabulator/TabulatorSpec.kt
+++ b/kvision-modules/kvision-tabulator/src/test/kotlin/test/pl/treksoft/kvision/tabulator/TabulatorSpec.kt
@@ -34,7 +34,7 @@ class TabulatorSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val tabulator = Tabulator<Any>(options = TabulatorOptions(data = arrayOf(obj {
                 id = 1
                 name = "Name"
diff --git a/kvision-modules/kvision-upload/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt b/kvision-modules/kvision-upload/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
index 37d7a9df..13c8531b 100644
--- a/kvision-modules/kvision-upload/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
+++ b/kvision-modules/kvision-upload/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
@@ -86,7 +86,7 @@ interface WSpec : DomSpec {
 
     fun runW(code: (widget: Widget, element: Element?) -> Unit) {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val widget = Widget()
             widget.id = "test_id"
             root.add(widget)
diff --git a/kvision-modules/kvision-upload/src/test/kotlin/test/pl/treksoft/kvision/form/upload/UploadInputSpec.kt b/kvision-modules/kvision-upload/src/test/kotlin/test/pl/treksoft/kvision/form/upload/UploadInputSpec.kt
index 626b70e4..de7a9315 100644
--- a/kvision-modules/kvision-upload/src/test/kotlin/test/pl/treksoft/kvision/form/upload/UploadInputSpec.kt
+++ b/kvision-modules/kvision-upload/src/test/kotlin/test/pl/treksoft/kvision/form/upload/UploadInputSpec.kt
@@ -33,7 +33,7 @@ class UploadInputSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val upi = UploadInput(multiple = true).apply {
                 id = "idti"
             }
diff --git a/kvision-modules/kvision-upload/src/test/kotlin/test/pl/treksoft/kvision/form/upload/UploadSpec.kt b/kvision-modules/kvision-upload/src/test/kotlin/test/pl/treksoft/kvision/form/upload/UploadSpec.kt
index bea4ddee..92078153 100644
--- a/kvision-modules/kvision-upload/src/test/kotlin/test/pl/treksoft/kvision/form/upload/UploadSpec.kt
+++ b/kvision-modules/kvision-upload/src/test/kotlin/test/pl/treksoft/kvision/form/upload/UploadSpec.kt
@@ -33,7 +33,7 @@ class UploadSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val upi = Upload(multiple = true)
             val id = upi.input.id
             root.add(upi)
diff --git a/src/main/kotlin/pl/treksoft/kvision/KVManager.kt b/src/main/kotlin/pl/treksoft/kvision/KVManager.kt
index faa0b77c..d1a4a8be 100644
--- a/src/main/kotlin/pl/treksoft/kvision/KVManager.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/KVManager.kt
@@ -29,6 +29,7 @@ import com.github.snabbdom.datasetModule
 import com.github.snabbdom.eventListenersModule
 import com.github.snabbdom.propsModule
 import com.github.snabbdom.styleModule
+import org.w3c.dom.HTMLElement
 import pl.treksoft.kvision.core.Component
 import pl.treksoft.kvision.utils.isIE11
 import kotlin.browser.document
@@ -72,6 +73,10 @@ internal object KVManager {
         return sdPatch(container, vnode)
     }
 
+    internal fun patch(element: HTMLElement, vnode: VNode): VNode {
+        return sdPatch(element, vnode)
+    }
+
     internal fun patch(oldVNode: VNode, newVNode: VNode): VNode {
         return sdPatch(oldVNode, newVNode)
     }
diff --git a/src/main/kotlin/pl/treksoft/kvision/panel/Root.kt b/src/main/kotlin/pl/treksoft/kvision/panel/Root.kt
index c17ea1a4..dd3d39b6 100644
--- a/src/main/kotlin/pl/treksoft/kvision/panel/Root.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/panel/Root.kt
@@ -23,6 +23,7 @@ package pl.treksoft.kvision.panel
 
 import com.github.snabbdom.VNode
 import com.github.snabbdom.h
+import org.w3c.dom.HTMLElement
 import pl.treksoft.kvision.KVManager
 import pl.treksoft.kvision.core.StringBoolPair
 import pl.treksoft.kvision.core.Style
@@ -45,7 +46,12 @@ import pl.treksoft.kvision.utils.snOpt
  * @param init an initializer extension function
  */
 @Suppress("TooManyFunctions")
-class Root(id: String, private val fixed: Boolean = false, init: (Root.() -> Unit)? = null) : SimplePanel() {
+class Root(
+    id: String? = null,
+    element: HTMLElement? = null,
+    private val fixed: Boolean = false,
+    init: (Root.() -> Unit)? = null
+) : SimplePanel() {
     private val contextMenus: MutableList<ContextMenu> = mutableListOf()
     private var rootVnode: VNode = renderVNode()
 
@@ -54,8 +60,15 @@ class Root(id: String, private val fixed: Boolean = false, init: (Root.() -> Uni
     val isFirstRoot = roots.isEmpty()
 
     init {
-        rootVnode = KVManager.patch(id, this.renderVNode())
-        this.id = id
+        if (id != null) {
+            rootVnode = KVManager.patch(id, this.renderVNode())
+            this.id = id
+        } else if (element != null) {
+            rootVnode = KVManager.patch(element, this.renderVNode())
+            this.id = "kv_root_${counter++}"
+        } else {
+            throw IllegalArgumentException("No root element specified!")
+        }
         roots.add(this)
         if (isFirstRoot) {
             Style.styles.forEach { it.parent = this }
@@ -144,6 +157,8 @@ class Root(id: String, private val fixed: Boolean = false, init: (Root.() -> Uni
     }
 
     companion object {
+        internal var counter = 0
+
         /**
          * @suppress internal function
          */
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt b/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
index 37d7a9df..13c8531b 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/TestUtil.kt
@@ -86,7 +86,7 @@ interface WSpec : DomSpec {
 
     fun runW(code: (widget: Widget, element: Element?) -> Unit) {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val widget = Widget()
             widget.id = "test_id"
             root.add(widget)
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/core/ContainerSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/core/ContainerSpec.kt
index 3e16fff8..960a18b6 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/core/ContainerSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/core/ContainerSpec.kt
@@ -34,7 +34,7 @@ class ContainerSpec : DomSpec {
     @Test
     fun add() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val container = SimplePanel()
             val child1 = Widget()
             child1.id = "child1"
@@ -52,7 +52,7 @@ class ContainerSpec : DomSpec {
     @Test
     fun addAll() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val container = SimplePanel()
             val child1 = Widget()
             child1.id = "child1"
@@ -69,7 +69,7 @@ class ContainerSpec : DomSpec {
     @Test
     fun remove() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val container = SimplePanel()
             val child1 = Widget()
             child1.id = "child1"
@@ -88,7 +88,7 @@ class ContainerSpec : DomSpec {
     @Test
     fun removeAll() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val container = SimplePanel()
             val child1 = Widget()
             child1.id = "child1"
@@ -107,7 +107,7 @@ class ContainerSpec : DomSpec {
     @Test
     fun getChildren() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val container = SimplePanel()
             val child1 = Widget()
             child1.id = "child1"
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/core/StyleSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/core/StyleSpec.kt
index bdb93744..4fbe3d59 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/core/StyleSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/core/StyleSpec.kt
@@ -37,7 +37,7 @@ class StyleSpec : DomSpec {
     @Test
     fun render() {
         run {
-            Root("test", true) {
+            Root("test", fixed = true) {
                 widget {
                     style {
                         margin = 2.px
@@ -58,7 +58,7 @@ class StyleSpec : DomSpec {
     @Test
     fun renderCustomClass() {
         run {
-            Root("test", true) {
+            Root("test", fixed = true) {
                 widget {
                     style("customclass") {
                         margin = 2.px
@@ -79,7 +79,7 @@ class StyleSpec : DomSpec {
     @Test
     fun renderSubclass() {
         run {
-            Root("test", true) {
+            Root("test", fixed = true) {
                 widget {
                     style("customclass") {
                         margin = 2.px
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/core/WidgetSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/core/WidgetSpec.kt
index fc1cc761..6b9be23d 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/core/WidgetSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/core/WidgetSpec.kt
@@ -130,7 +130,7 @@ class WidgetSpec : WSpec {
     @Test
     fun getRoot() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val widget = Widget()
             root.add(widget)
             val r = widget.getRoot()
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/core/WidgetWrapperSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/core/WidgetWrapperSpec.kt
index aac92c50..0c28c327 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/core/WidgetWrapperSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/core/WidgetWrapperSpec.kt
@@ -35,7 +35,7 @@ class WidgetWrapperSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val widget = Widget()
             val wrapper = WidgetWrapper(widget)
             wrapper.width = 100 to UNIT.em
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/dropdown/ContextMenuSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/dropdown/ContextMenuSpec.kt
index 7d320e2e..35172267 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/dropdown/ContextMenuSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/dropdown/ContextMenuSpec.kt
@@ -34,7 +34,7 @@ class ContextMenuSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val m = ContextMenu {
                 link("a", "b")
                 link("c", "d")
@@ -54,7 +54,7 @@ class ContextMenuSpec : DomSpec {
     @Test
     fun positionMenu() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val m = ContextMenu {
                 link("a", "b")
                 link("c", "d")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/dropdown/HeaderSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/dropdown/HeaderSpec.kt
index 5a9a050c..e75baf9e 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/dropdown/HeaderSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/dropdown/HeaderSpec.kt
@@ -32,7 +32,7 @@ class HeaderSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val h = Header("Test")
             root.add(h)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/dropdown/SeparatorSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/dropdown/SeparatorSpec.kt
index 2f2d22bf..86607ec7 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/dropdown/SeparatorSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/dropdown/SeparatorSpec.kt
@@ -32,7 +32,7 @@ class SeparatorSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val s = Separator()
             root.add(s)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/form/FieldLabelSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/form/FieldLabelSpec.kt
index d13bc920..5319d4bc 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/form/FieldLabelSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/form/FieldLabelSpec.kt
@@ -32,7 +32,7 @@ class FieldLabelSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val fl = FieldLabel("input", "Label")
             root.add(fl)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/form/HelpBlockSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/form/HelpBlockSpec.kt
index c7d0b0da..c7c4ede5 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/form/HelpBlockSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/form/HelpBlockSpec.kt
@@ -32,7 +32,7 @@ class HelpBlockSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val fl = HelpBlock("Form Error")
             root.add(fl)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/form/check/CheckBoxInputSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/form/check/CheckBoxInputSpec.kt
index 8a9f86d5..677a2b8e 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/form/check/CheckBoxInputSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/form/check/CheckBoxInputSpec.kt
@@ -32,7 +32,7 @@ class CheckBoxInputSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val ci = CheckBoxInput(value = true).apply {
                 name = "name"
                 id = "idti"
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/form/check/CheckBoxSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/form/check/CheckBoxSpec.kt
index 9a178abb..16da0c70 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/form/check/CheckBoxSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/form/check/CheckBoxSpec.kt
@@ -33,7 +33,7 @@ class CheckBoxSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val ci = CheckBox(value = true, label = "Label").apply {
                 name = "name"
                 style = CheckBoxStyle.DANGER
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioGroupInputSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioGroupInputSpec.kt
index f74a76f7..55788c84 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioGroupInputSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioGroupInputSpec.kt
@@ -33,7 +33,7 @@ class RadioGroupInputSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val ci = RadioGroupInput(options = listOf("a" to "A", "b" to "B"), value = "a").apply {
                 disabled = true
                 inline = true
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioGroupSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioGroupSpec.kt
index e55e9913..2ed52b67 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioGroupSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioGroupSpec.kt
@@ -33,7 +33,7 @@ class RadioGroupSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val ci = RadioGroup(options = listOf("a" to "A", "b" to "B"), value = "a", label = "Label").apply {
                 disabled = true
                 inline = true
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioInputSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioInputSpec.kt
index 55d4108a..5b4fe836 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioInputSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioInputSpec.kt
@@ -32,7 +32,7 @@ class RadioInputSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val ci = RadioInput(value = true).apply {
                 name = "name"
                 id = "idti"
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioSpec.kt
index 09763cc7..a8fbbcc5 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/form/check/RadioSpec.kt
@@ -33,7 +33,7 @@ class RadioSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val ci = Radio(value = true, label = "Label", extraValue = "abc").apply {
                 name = "name"
                 style = RadioStyle.DANGER
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/form/text/PasswordSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/form/text/PasswordSpec.kt
index dc46782b..5d6c2738 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/form/text/PasswordSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/form/text/PasswordSpec.kt
@@ -32,7 +32,7 @@ class PasswordSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val ti = Password(value = "abc", label = "Label").apply {
                 placeholder = "place"
                 name = "name"
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextAreaInputSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextAreaInputSpec.kt
index 0e8257ff..815f12e7 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextAreaInputSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextAreaInputSpec.kt
@@ -32,7 +32,7 @@ class TextAreaInputSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val ti = TextAreaInput(cols = 5, rows = 2, value = "abc").apply {
                 placeholder = "place"
                 name = "name"
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextAreaSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextAreaSpec.kt
index c948628b..31b4baf2 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextAreaSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextAreaSpec.kt
@@ -32,7 +32,7 @@ class TextAreaSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val ti = TextArea(cols = 5, rows = 2, value = "abc", label = "Label").apply {
                 placeholder = "place"
                 name = "name"
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextInputSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextInputSpec.kt
index bd8c9786..6d21ab14 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextInputSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextInputSpec.kt
@@ -33,7 +33,7 @@ class TextInputSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val ti = TextInput(type = TextInputType.PASSWORD, value = "abc").apply {
                 placeholder = "place"
                 name = "name"
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextSpec.kt
index 071bf35b..7ce811fa 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/form/text/TextSpec.kt
@@ -32,7 +32,7 @@ class TextSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val ti = Text(value = "abc", label = "Label").apply {
                 placeholder = "place"
                 name = "name"
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/ButtonSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/ButtonSpec.kt
index de2ea036..512c3bc2 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/ButtonSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/ButtonSpec.kt
@@ -34,7 +34,7 @@ class ButtonSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val button = Button("Cancel", "fa-bars", ButtonStyle.PRIMARY)
             button.size = ButtonSize.LARGE
             button.block = true
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/CanvasSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/CanvasSpec.kt
index a896d9e5..f30872ca 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/CanvasSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/CanvasSpec.kt
@@ -32,7 +32,7 @@ class CanvasSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val canvas = Canvas(800, 600)
             root.add(canvas)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/DivSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/DivSpec.kt
index 4fd64478..528fc0ae 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/DivSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/DivSpec.kt
@@ -32,7 +32,7 @@ class DivSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val div = Div("This is a div")
             root.add(div)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/FooterSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/FooterSpec.kt
index 6398d95c..69819203 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/FooterSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/FooterSpec.kt
@@ -32,7 +32,7 @@ class FooterSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val footer = Footer("This is a footer")
             root.add(footer)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/H1Spec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/H1Spec.kt
index 6f22b89f..bd0c69b6 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/H1Spec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/H1Spec.kt
@@ -32,7 +32,7 @@ class H1Spec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val h1 = H1("This is h1 header")
             root.add(h1)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/H2Spec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/H2Spec.kt
index 1ca74077..5ec2a666 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/H2Spec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/H2Spec.kt
@@ -32,7 +32,7 @@ class H2Spec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val h2 = H2("This is h2 header")
             root.add(h2)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/H3Spec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/H3Spec.kt
index a9f58473..f85ede34 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/H3Spec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/H3Spec.kt
@@ -32,7 +32,7 @@ class H3Spec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val h3 = H3("This is h3 header")
             root.add(h3)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/H4Spec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/H4Spec.kt
index 47550459..ce52282b 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/H4Spec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/H4Spec.kt
@@ -32,7 +32,7 @@ class H4Spec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val h4 = H4("This is h4 header")
             root.add(h4)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/H5Spec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/H5Spec.kt
index 6b3fc647..029a692f 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/H5Spec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/H5Spec.kt
@@ -32,7 +32,7 @@ class H5Spec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val h5 = H5("This is h5 header")
             root.add(h5)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/H6Spec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/H6Spec.kt
index e22bd401..06a851e0 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/H6Spec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/H6Spec.kt
@@ -32,7 +32,7 @@ class H6Spec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val div = H1("This is h1 header")
             root.add(div)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/HeaderSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/HeaderSpec.kt
index e5ea8679..1b33adcc 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/HeaderSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/HeaderSpec.kt
@@ -32,7 +32,7 @@ class HeaderSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val header = Header("This is a header")
             root.add(header)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/IconSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/IconSpec.kt
index fde07413..ea3425c5 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/IconSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/IconSpec.kt
@@ -32,7 +32,7 @@ class IconSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val icon = Icon("fa-check")
             root.add(icon)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/IframeSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/IframeSpec.kt
index 60a380b7..69051f92 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/IframeSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/IframeSpec.kt
@@ -33,7 +33,7 @@ class IframeSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val iframe = Iframe("https://www.google.com", null, "test", 800, 600, setOf(Sandbox.ALLOWSAMEORIGIN))
             root.add(iframe)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/ImageSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/ImageSpec.kt
index fa32a24f..169575fc 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/ImageSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/ImageSpec.kt
@@ -34,7 +34,7 @@ class ImageSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val res = require("./img/placeholder.png")
             @Suppress("UnsafeCastFromDynamic")
             val image = Image(res, "Image", true, ImageShape.ROUNDED, true)
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/LinkSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/LinkSpec.kt
index 6a4434ae..88869cf4 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/LinkSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/LinkSpec.kt
@@ -32,7 +32,7 @@ class LinkSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val link = Link("Google", "http://www.google.com")
             root.add(link)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/ListSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/ListSpec.kt
index 5f0aac69..bf52f1dc 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/ListSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/ListSpec.kt
@@ -35,7 +35,7 @@ class ListSpec : DomSpec {
     @Test
     fun renderElements() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val list = ListTag(ListType.DL_HORIZ, listOf("a1", "a2", "b1", "b2"))
             root.add(list)
             val element = document.getElementById("test")
@@ -50,7 +50,7 @@ class ListSpec : DomSpec {
     @Test
     fun renderAsContainer() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val list = ListTag(ListType.UL)
             list.add(Tag(TAG.PRE, "pre"))
             list.add(Tag(TAG.DEL, "del"))
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/PSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/PSpec.kt
index d5af81e3..0ab9c5bc 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/PSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/PSpec.kt
@@ -32,7 +32,7 @@ class PSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val par = P("This is a paragraph")
             root.add(par)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/SectionSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/SectionSpec.kt
index 4fb7a490..fa987d05 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/SectionSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/SectionSpec.kt
@@ -32,7 +32,7 @@ class SectionSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val section = Section("This is a section")
             root.add(section)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/SpanSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/SpanSpec.kt
index b1f49b45..88604b5e 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/SpanSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/SpanSpec.kt
@@ -32,7 +32,7 @@ class SpanSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val span = Span("This is a label")
             root.add(span)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/html/TagSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/html/TagSpec.kt
index 29a5c079..b6017804 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/html/TagSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/html/TagSpec.kt
@@ -35,7 +35,7 @@ class TagSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val tag = Tag(TAG.H1, "This is <b>h1</b>", rich = false, align = Align.CENTER)
             root.add(tag)
             val element = document.getElementById("test")
@@ -50,7 +50,7 @@ class TagSpec : DomSpec {
     @Test
     fun renderRich() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val tag = Tag(TAG.H1, "This is <b>h1</b>", rich = true, align = Align.RIGHT)
             root.add(tag)
             val element = document.getElementById("test")
@@ -65,7 +65,7 @@ class TagSpec : DomSpec {
     @Test
     fun renderAsContainer() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val tag = Tag(TAG.P, align = Align.RIGHT)
             tag.add(Tag(TAG.DEL, "This is test"))
             tag.add(Link("abc", "/x"))
@@ -82,7 +82,7 @@ class TagSpec : DomSpec {
     @Test
     fun renderUnaryPlus() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val tag = Tag(TAG.H1, rich = true) {
                 +"This is <b>h1</b>"
             }
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/navbar/NavFormSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/navbar/NavFormSpec.kt
index aeea7a3b..40720bcb 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/navbar/NavFormSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/navbar/NavFormSpec.kt
@@ -32,7 +32,7 @@ class NavFormSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val navf = NavForm()
             root.add(navf)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/navbar/NavSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/navbar/NavSpec.kt
index 2ecad124..988a706d 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/navbar/NavSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/navbar/NavSpec.kt
@@ -32,7 +32,7 @@ class NavSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val nav = Nav()
             root.add(nav)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/navbar/NavbarSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/navbar/NavbarSpec.kt
index 90af4450..f38a05f9 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/navbar/NavbarSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/navbar/NavbarSpec.kt
@@ -37,7 +37,7 @@ class NavbarSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val navbar = Navbar("TEST", NavbarType.FIXEDTOP)
             root.add(navbar)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/panel/DockPanelSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/panel/DockPanelSpec.kt
index d387be56..5684120d 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/panel/DockPanelSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/panel/DockPanelSpec.kt
@@ -34,7 +34,7 @@ class DockPanelSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val dockPanel = DockPanel()
             root.add(dockPanel)
             dockPanel.add(Span("abc"), Side.UP)
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/panel/FlexPanelSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/panel/FlexPanelSpec.kt
index 5bcc68f6..b897fef2 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/panel/FlexPanelSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/panel/FlexPanelSpec.kt
@@ -35,7 +35,7 @@ class FlexPanelSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val flexPanel = FlexPanel(FlexDir.ROWREV, justify = FlexJustify.SPACEEVENLY)
             root.add(flexPanel)
             flexPanel.add(Span("abc"), 1)
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/panel/GridPanelSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/panel/GridPanelSpec.kt
index add3638f..d7d9beb7 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/panel/GridPanelSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/panel/GridPanelSpec.kt
@@ -33,7 +33,7 @@ class GridPanelSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val gridPanel = GridPanel()
             root.add(gridPanel)
             gridPanel.add(Span("abc"), 1, 1)
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/panel/HPanelSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/panel/HPanelSpec.kt
index a185420c..c53b2e57 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/panel/HPanelSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/panel/HPanelSpec.kt
@@ -34,7 +34,7 @@ class HPanelSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val hPanel = HPanel(justify = FlexJustify.SPACEBETWEEN)
             root.add(hPanel)
             hPanel.add(Span("abc"), 1)
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/panel/ResponsiveGridPanelSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/panel/ResponsiveGridPanelSpec.kt
index eb710cef..fcdf9860 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/panel/ResponsiveGridPanelSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/panel/ResponsiveGridPanelSpec.kt
@@ -33,7 +33,7 @@ class ResponsiveGridPanelSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val rgPanel = ResponsiveGridPanel()
             root.add(rgPanel)
             rgPanel.add(Span("abc"), 1, 1)
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/panel/RootSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/panel/RootSpec.kt
index 659dac9a..474b1d6a 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/panel/RootSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/panel/RootSpec.kt
@@ -50,7 +50,7 @@ class RootSpec : DomSpec {
     @Test
     fun getRoot() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val r = root.getRoot()
             assertTrue("Should return self") { r == root }
         }
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/panel/SplitPanelSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/panel/SplitPanelSpec.kt
index 09c397ce..94ed165a 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/panel/SplitPanelSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/panel/SplitPanelSpec.kt
@@ -34,7 +34,7 @@ class SplitPanelSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val splitPanel = SplitPanel(Direction.VERTICAL)
             root.add(splitPanel)
             val label1 = Span("abc")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/panel/StackPanelSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/panel/StackPanelSpec.kt
index f52b6486..8a1ce795 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/panel/StackPanelSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/panel/StackPanelSpec.kt
@@ -33,7 +33,7 @@ class StackPanelSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val stackPanel = StackPanel()
             root.add(stackPanel)
             val label1 = Span("abc")
@@ -48,7 +48,7 @@ class StackPanelSpec : DomSpec {
     @Test
     fun renderNotActivateLast() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val stackPanel = StackPanel(activateLast = false)
             root.add(stackPanel)
             val label1 = Span("abc")
@@ -67,7 +67,7 @@ class StackPanelSpec : DomSpec {
     @Test
     fun remove() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val stackPanel = StackPanel(activateLast = false)
             root.add(stackPanel)
             val label1 = Span("abc")
@@ -83,7 +83,7 @@ class StackPanelSpec : DomSpec {
     @Test
     fun removeAll() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val stackPanel = StackPanel(activateLast = false)
             root.add(stackPanel)
             val label1 = Span("abc")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/panel/TabPanelSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/panel/TabPanelSpec.kt
index f1f3beeb..35620818 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/panel/TabPanelSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/panel/TabPanelSpec.kt
@@ -34,7 +34,7 @@ class TabPanelSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val tabs = TabPanel()
             root.add(tabs)
             val label1 = Span("abc")
@@ -53,7 +53,7 @@ class TabPanelSpec : DomSpec {
     @Test
     fun setActiveIndex() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val tabs = TabPanel()
             root.add(tabs)
             val label1 = Span("abc")
@@ -73,7 +73,7 @@ class TabPanelSpec : DomSpec {
     @Test
     fun removeTab() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val tabs = TabPanel()
             root.add(tabs)
             val label1 = Span("abc")
@@ -95,7 +95,7 @@ class TabPanelSpec : DomSpec {
     @Test
     fun tabClick() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val tabs = TabPanel()
             root.add(tabs)
             val label1 = Span("abc")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/panel/VPanelSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/panel/VPanelSpec.kt
index 81ea720d..5bed89f1 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/panel/VPanelSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/panel/VPanelSpec.kt
@@ -34,7 +34,7 @@ class VPanelSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val vPanel = VPanel(justify = FlexJustify.SPACEBETWEEN)
             root.add(vPanel)
             vPanel.add(Span("abc"), 1)
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/progress/ProgressBarSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/progress/ProgressBarSpec.kt
index d520f0b6..2f044987 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/progress/ProgressBarSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/progress/ProgressBarSpec.kt
@@ -33,7 +33,7 @@ class ProgressBarSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val progressBar =
                 ProgressBar(50, style = ProgressBarStyle.SUCCESS, striped = true, content = "Processing ...")
             root.add(progressBar)
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/progress/ProgressIndicatorSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/progress/ProgressIndicatorSpec.kt
index 83892ed9..4aa14230 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/progress/ProgressIndicatorSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/progress/ProgressIndicatorSpec.kt
@@ -33,7 +33,7 @@ class ProgressIndicatorSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val ind = ProgressIndicator(50, style = ProgressBarStyle.SUCCESS, striped = true)
             root.add(ind)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/table/CellSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/table/CellSpec.kt
index 435e9b22..582212bd 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/table/CellSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/table/CellSpec.kt
@@ -32,7 +32,7 @@ class CellSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val cell = Cell("This is a cell")
             root.add(cell)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/table/HeaderCellSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/table/HeaderCellSpec.kt
index 8c210ae0..40f25a66 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/table/HeaderCellSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/table/HeaderCellSpec.kt
@@ -32,7 +32,7 @@ class HeaderCellSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val cell = HeaderCell("This is a header cell")
             root.add(cell)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/table/RowSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/table/RowSpec.kt
index 6c2f3c1c..d9a6fdfa 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/table/RowSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/table/RowSpec.kt
@@ -33,7 +33,7 @@ class RowSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val row = Row {
                 cell("A")
             }
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/table/TableSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/table/TableSpec.kt
index 637f8f28..997da597 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/table/TableSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/table/TableSpec.kt
@@ -35,7 +35,7 @@ class TableSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val table = Table(listOf("a", "b")) {
                 row {
                     cell("A")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/toolbar/ButtonGroupSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/toolbar/ButtonGroupSpec.kt
index 16b352d8..b324b8ab 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/toolbar/ButtonGroupSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/toolbar/ButtonGroupSpec.kt
@@ -34,7 +34,7 @@ class ButtonGroupSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val group = ButtonGroup()
             root.add(group)
             val element = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/toolbar/ToolbarSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/toolbar/ToolbarSpec.kt
index 4d296e03..d41ef05e 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/toolbar/ToolbarSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/toolbar/ToolbarSpec.kt
@@ -32,7 +32,7 @@ class ToolbarSpec : DomSpec {
     @Test
     fun render() {
         run {
-            val root = Root("test", true)
+            val root = Root("test", fixed = true)
             val toolbar = Toolbar()
             root.add(toolbar)
             val element = document.getElementById("test")