1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
package tview
import (
"maunium.net/go/tcell"
)
// Modal is a centered message window used to inform the user or prompt them
// for an immediate decision. It needs to have at least one button (added via
// AddButtons()) or it will never disappear.
//
// See https://github.com/rivo/tview/wiki/Modal for an example.
type Modal struct {
*Box
// The framed embedded in the modal.
frame *Frame
// The form embedded in the modal's frame.
form *Form
// The message text (original, not word-wrapped).
text string
// The text color.
textColor tcell.Color
// 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)
}
// NewModal returns a new modal message window.
func NewModal() *Modal {
m := &Modal{
Box: NewBox(),
textColor: Styles.PrimaryTextColor,
}
m.form = NewForm().
SetButtonsAlign(AlignCenter).
SetButtonBackgroundColor(Styles.PrimitiveBackgroundColor).
SetButtonTextColor(Styles.PrimaryTextColor)
m.form.SetBackgroundColor(Styles.ContrastBackgroundColor).SetBorderPadding(0, 0, 0, 0)
m.frame = NewFrame(m.form).SetBorders(0, 0, 1, 0, 0, 0)
m.frame.SetBorder(true).
SetBackgroundColor(Styles.ContrastBackgroundColor).
SetBorderPadding(1, 1, 1, 1)
m.focus = m
return m
}
// SetTextColor sets the color of the message text.
func (m *Modal) SetTextColor(color tcell.Color) *Modal {
m.textColor = color
return m
}
// 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
// then be negative and the label text an emptry string.
func (m *Modal) SetDoneFunc(handler func(buttonIndex int, buttonLabel string)) *Modal {
m.done = handler
return m
}
// SetText sets the message text of the window. The text may contain line
// breaks. Note that words are wrapped, too, based on the final size of the
// window.
func (m *Modal) SetText(text string) *Modal {
m.text = text
return m
}
// AddButtons adds buttons to the window. There must be at least one button and
// a "done" handler so the window can be closed again.
func (m *Modal) AddButtons(labels []string) *Modal {
for index, label := range labels {
func(i int, l string) {
m.form.AddButton(label, func() {
if m.done != nil {
m.done(i, l)
}
})
}(index, label)
}
return m
}
// Focus is called when this primitive receives focus.
func (m *Modal) Focus(delegate func(p Primitive)) {
delegate(m.form)
}
// HasFocus returns whether or not this primitive has focus.
func (m *Modal) HasFocus() bool {
return m.form.HasFocus()
}
// Draw draws this primitive onto the screen.
func (m *Modal) Draw(screen tcell.Screen) {
// Calculate the width of this modal.
buttonsWidth := 0
for _, button := range m.form.buttons {
buttonsWidth += StringWidth(button.label) + 4 + 2
}
buttonsWidth -= 2
screenWidth, screenHeight := screen.Size()
width := screenWidth / 3
if width < buttonsWidth {
width = buttonsWidth
}
// width is now without the box border.
// Reset the text and find out how wide it is.
m.frame.Clear()
lines := WordWrap(m.text, width)
for _, line := range lines {
m.frame.AddText(line, true, AlignCenter, m.textColor)
}
// Set the modal's position and size.
height := len(lines) + 6
width += 4
x := (screenWidth - width) / 2
y := (screenHeight - height) / 2
m.SetRect(x, y, width, height)
// Draw the frame.
m.frame.SetRect(x, y, width, height)
m.frame.Draw(screen)
}
|
