Add Modal.SetButtonsAlign and Modal.SetTextAlign

Also, do not customize Modal window styling by default. Use GetForm and GetFrame to customize.

Resolves #71.

CHANGELOG

@@ -1,5 +1,7 @@
 v1.5.7 (WIP)
+- Add Modal.SetButtonsAlign and Modal.SetTextAlign
 - Fix TextView.GetRegionText error when text contains color tags
+- Do not customize Modal window styling by default (use GetForm and GetFrame to customize)
 
 v1.5.6 (2020-07-08)
 - Add TrueColorTags option and do not use TrueColor tag values by default

go.mod

@@ -4,7 +4,7 @@ go 1.12
 
 require (
 	code.rocketnine.space/tslocum/cbind v0.1.5
-	github.com/gdamore/tcell/v2 v2.3.11
+	github.com/gdamore/tcell/v2 v2.4.0
 	github.com/lucasb-eyer/go-colorful v1.2.0
 	github.com/mattn/go-runewidth v0.0.13
 	github.com/rivo/uniseg v0.2.0

go.sum

@@ -3,8 +3,8 @@ code.rocketnine.space/tslocum/cbind v0.1.5/go.mod h1:LtfqJTzM7qhg88nAvNhx+VnTjZ0
 github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
 github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
 github.com/gdamore/tcell/v2 v2.2.0/go.mod h1:cTTuF84Dlj/RqmaCIV5p4w8uG1zWdk0SF6oBpwHp4fU=
-github.com/gdamore/tcell/v2 v2.3.11 h1:ECO6WqHGbKZ3HrSL7bG/zArMCmLaNr5vcjjMVnLHpzc=
-github.com/gdamore/tcell/v2 v2.3.11/go.mod h1:cTTuF84Dlj/RqmaCIV5p4w8uG1zWdk0SF6oBpwHp4fU=
+github.com/gdamore/tcell/v2 v2.4.0 h1:W6dxJEmaxYvhICFoTY3WrLLEXsQ11SaFnKGVEXW57KM=
+github.com/gdamore/tcell/v2 v2.4.0/go.mod h1:cTTuF84Dlj/RqmaCIV5p4w8uG1zWdk0SF6oBpwHp4fU=
 github.com/lucasb-eyer/go-colorful v1.0.3/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
 github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
 github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=

modal.go

@@ -27,6 +27,9 @@ type Modal struct {
 	// The text color.
 	textColor tcell.Color
 
+	// The text alignment.
+	textAlign int
+
 	// The optional callback for when the user clicked one of the buttons. It
 	// receives the index of the clicked button and the button's label.
 	done func(buttonIndex int, buttonLabel string)
@@ -39,13 +42,11 @@ func NewModal() *Modal {
 	m := &Modal{
 		Box:       NewBox(),
 		textColor: Styles.PrimaryTextColor,
+		textAlign: AlignCenter,
 	}
 
 	m.form = NewForm()
 	m.form.SetButtonsAlign(AlignCenter)
-	m.form.SetButtonBackgroundColor(Styles.PrimitiveBackgroundColor)
-	m.form.SetButtonTextColor(Styles.PrimaryTextColor)
-	m.form.SetBackgroundColor(Styles.ContrastBackgroundColor)
 	m.form.SetPadding(0, 0, 0, 0)
 	m.form.SetCancelFunc(func() {
 		if m.done != nil {
@@ -56,7 +57,6 @@ func NewModal() *Modal {
 	m.frame = NewFrame(m.form)
 	m.frame.SetBorder(true)
 	m.frame.SetBorders(0, 0, 1, 0, 0, 0)
-	m.frame.SetBackgroundColor(Styles.ContrastBackgroundColor)
 	m.frame.SetPadding(1, 1, 1, 1)
 
 	m.focus = m
@@ -96,6 +96,15 @@ func (m *Modal) SetButtonTextColor(color tcell.Color) {
 	m.form.SetButtonTextColor(color)
 }
 
+// SetButtonsAlign sets the horizontal alignment of the buttons. This must be
+// either AlignLeft, AlignCenter (the default), or AlignRight.
+func (m *Modal) SetButtonsAlign(align int) {
+	m.Lock()
+	defer m.Unlock()
+
+	m.form.SetButtonsAlign(align)
+}
+
 // SetDoneFunc sets a handler which is called when one of the buttons was
 // pressed. It receives the index of the button as well as its label text. The
 // handler is also called when the user presses the Escape key. The index will
@@ -117,6 +126,15 @@ func (m *Modal) SetText(text string) {
 	m.text = text
 }
 
+// SetTextAlign sets the horizontal alignment of the text. This must be either
+// AlignLeft, AlignCenter (the default), or AlignRight.
+func (m *Modal) SetTextAlign(align int) {
+	m.Lock()
+	defer m.Unlock()
+
+	m.textAlign = align
+}
+
 // GetForm returns the Form embedded in the window. The returned Form may be
 // modified to include additional elements (e.g. AddInputField, AddFormItem).
 func (m *Modal) GetForm() *Form {
@@ -215,7 +233,7 @@ func (m *Modal) Draw(screen tcell.Screen) {
 	m.frame.Clear()
 	lines := WordWrap(m.text, width)
 	for _, line := range lines {
-		m.frame.AddText(line, true, AlignCenter, m.textColor)
+		m.frame.AddText(line, true, m.textAlign, m.textColor)
 	}
 
 	// Set the Modal's position and size.