From 8d7d9882ba4284479aa1e56d649fa75577202950 Mon Sep 17 00:00:00 2001
From: Sasha Koshka <sashakoshka@tebibyte.media>
Date: Wed, 9 Aug 2023 11:35:24 -0400
Subject: [PATCH] I forgor

---
 button.go | 12 ++++++--
 input.go  | 90 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 label.go  | 18 ++++++-----
 3 files changed, 110 insertions(+), 10 deletions(-)
 create mode 100644 input.go

diff --git a/button.go b/button.go
index 6f470b0..f3ca2dc 100644
--- a/button.go
+++ b/button.go
@@ -14,11 +14,14 @@ type Button struct {
 }
 
 // NewButton creates a new button with the specified text.
-func NewButton (text string) Button {
-	box := Button { TextBox: tomo.NewTextBox() }
+func NewButton (text string) *Button {
+	box := &Button { TextBox: tomo.NewTextBox() }
 	theme.Apply(box, theme.R("objects", "Button"))
 	box.SetText(text)
+	box.SetAlign(tomo.AlignMiddle, tomo.AlignMiddle)
 	box.OnMouseUp(box.handleMouseUp)
+	box.OnKeyUp(box.handleKeyUp)
+	box.SetFocusable(true)
 	return box
 }
 
@@ -27,6 +30,11 @@ func (this *Button) OnClick (callback func ()) event.Cookie {
 	return this.on.click.Connect(callback)
 }
 
+func (this *Button) handleKeyUp (key input.Key, numberPad bool) {
+	if key != input.KeyEnter && key != input.Key(' ') { return }
+	this.on.click.Broadcast()
+}
+
 func (this *Button) handleMouseUp (button input.Button) {
 	if button != input.ButtonLeft { return }
 	if this.MousePosition().In(this.Bounds()) {
diff --git a/input.go b/input.go
new file mode 100644
index 0000000..a24210b
--- /dev/null
+++ b/input.go
@@ -0,0 +1,90 @@
+package objects
+
+import "git.tebibyte.media/tomo/tomo"
+import "git.tebibyte.media/tomo/tomo/text"
+import "git.tebibyte.media/tomo/tomo/theme"
+import "git.tebibyte.media/tomo/tomo/input"
+import "git.tebibyte.media/tomo/tomo/event"
+
+// TextInput is a single-line editable text box.
+type TextInput struct {
+	tomo.TextBox
+	text []rune
+	on struct {
+		enter event.FuncBroadcaster
+	}
+}
+
+// NewTextInput creates a new text input containing the specified text.
+func NewTextInput (text string) *TextInput {
+	this := &TextInput { TextBox: tomo.NewTextBox() }
+	theme.Apply(this, theme.R("objects", "TextInput"))
+	this.SetText(text)
+	this.SetFocusable(true)
+	this.SetSelectable(true)
+	this.OnKeyDown(this.handleKeyDown)
+	return this
+}
+
+// SetText sets the text content of the input.
+func (this *TextInput) SetText (text string) {
+	this.text = []rune(text)
+	this.TextBox.SetText(text)
+}
+
+// Text returns the text content of the input.
+func (this *TextInput) Text () string {
+	return string(this.text)
+}
+
+// OnEnter specifies a function to be called when the user presses enter within
+// the text input.
+func (this *TextInput) OnEnter (callback func ()) event.Cookie {
+	return this.on.enter.Connect(callback)
+}
+
+func (this *TextInput) handleKeyDown (key input.Key, numpad bool) {
+	dot       := this.Dot()
+	modifiers := this.Modifiers()
+	word      := modifiers.Control
+	sel       := modifiers.Shift
+	changed   := false
+	
+	switch {
+	case key == input.KeyEnter:
+		this.on.enter.Broadcast()
+	case key == input.KeyHome || (modifiers.Alt && key == input.KeyLeft):
+		dot.End = 0
+		if !sel { dot.Start = dot.End }
+	case key == input.KeyEnd || (modifiers.Alt && key == input.KeyRight):
+		dot.End = len(this.text)
+		if !sel { dot.Start = dot.End }
+	case key == input.KeyLeft:
+		if sel {
+			dot = text.SelectLeft(this.text, dot, word)
+		} else {
+			dot = text.MoveLeft(this.text, dot, word)
+		}
+	case key == input.KeyRight:
+		if sel {
+			dot = text.SelectRight(this.text, dot, word)
+		} else {
+			dot = text.MoveRight(this.text, dot, word)
+		}
+	case key == input.KeyBackspace:
+		this.text, dot = text.Backspace(this.text, dot, word)
+		changed = true
+	case key == input.KeyDelete:
+		this.text, dot = text.Delete(this.text, dot, word)
+		changed = true
+	case key == input.Key('a') && modifiers.Control:
+		dot.Start = 0
+		dot.End   = len(this.text)
+	case key.Printable():
+		this.text, dot = text.Type(this.text, dot, rune(key))
+		changed = true
+	}
+	
+	this.Select(dot)
+	if changed { this.SetText(string(this.text)) }
+}
diff --git a/label.go b/label.go
index 52ed594..9a06817 100644
--- a/label.go
+++ b/label.go
@@ -4,13 +4,15 @@ import "git.tebibyte.media/tomo/tomo"
 import "git.tebibyte.media/tomo/tomo/theme"
 
 // Label is a simple text label.
-type Label tomo.TextBox
-
-// NewLabel creates a new text label.
-func NewLabel (text string) Label {
-	box := tomo.NewTextBox()
-	theme.Apply(box, theme.R("objects", "Label"))
-	box.SetText(text)
-	return box
+type Label struct {
+	tomo.TextBox
+}
+
+// NewLabel creates a new text label.
+func NewLabel (text string) *Label {
+	this := &Label { TextBox: tomo.NewTextBox() }
+	theme.Apply(this, theme.R("objects", "Label"))
+	this.SetText(text)
+	return this
 }