mount text

pkg/app/node.go

@@ -166,7 +166,14 @@ func (m nodeManager) Mount(depth uint, v UI) (UI, error) {
 }
 
 func (m nodeManager) mountText(depth uint, v *text) (UI, error) {
-	panic("not implemented")
+	if v.Mounted() {
+		return nil, errors.New("text is already mounted").
+			WithTag("parent-type", reflect.TypeOf(v.getParent())).
+			WithTag("preview-value", previewText(v.value))
+	}
+
+	v.jsvalue = Window().createTextNode(v.value)
+	return v, nil
 }
 
 func (m nodeManager) mountHTMLElement(depth uint, v HTML) (UI, error) {

pkg/app/node_test.go

@@ -229,3 +229,26 @@ func TestHTMLString(t *testing.T) {
 		})
 	}
 }
+
+func TestNodeManagerMount(t *testing.T) {
+	t.Run("mounting a text succeeds", func(t *testing.T) {
+		var m nodeManager
+
+		text, err := m.Mount(1, Text("hello"))
+		require.NoError(t, err)
+		require.NotZero(t, text)
+		require.NotNil(t, text.JSValue())
+
+	})
+
+	t.Run("mounting an already mounted text returns an error", func(t *testing.T) {
+		var m nodeManager
+
+		text, err := m.Mount(1, Text("hello"))
+		require.NoError(t, err)
+
+		text, err = m.Mount(1, text)
+		require.Error(t, err)
+		require.Zero(t, text)
+	})
+}

pkg/app/strings.go

@@ -140,3 +140,10 @@ func FormatString(format string, v ...any) string {
 	}
 	return fmt.Sprintf(format, v...)
 }
+
+func previewText(v string) string {
+	if len(v) <= 80 {
+		return v
+	}
+	return v[:77] + "..."
+}

pkg/app/strings_test.go

@@ -143,3 +143,23 @@ func BenchmarkAppendClass(b *testing.B) {
 		AppendClass("hello", "foo-bar-k", "bar-lkj-adsf-adsf")
 	}
 }
+
+func TestPreviewText(t *testing.T) {
+	t.Run("full text is previewed", func(t *testing.T) {
+		require.Equal(t, "hello", previewText("hello"))
+	})
+
+	t.Run("text of 80 chara is previewed", func(t *testing.T) {
+		require.Equal(t,
+			"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
+			previewText("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"),
+		)
+	})
+
+	t.Run("text over 80 chara is previewed", func(t *testing.T) {
+		require.Equal(t,
+			"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx...",
+			previewText("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxhello"),
+		)
+	})
+}

pkg/app/text.go

@@ -30,7 +30,7 @@ func (t *text) JSValue() Value {
 }
 
 func (t *text) Mounted() bool {
-	return t.jsvalue != nil && t.getDispatcher() != nil
+	return t.jsvalue != nil
 }
 
 func (t *text) name() string {