/
dialog.go
136 lines (126 loc) · 3.3 KB
/
dialog.go
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// Package goublu Dialog contains any user response dialogs for Goublu.
package main
import (
"fmt"
"strings"
"github.com/jroimartin/gocui"
)
// TextLineDialog is what it sez.
type TextLineDialog struct {
UM *UbluManager
G *gocui.Gui
X int
Y int
Title string
BgColor gocui.Attribute
FgColor gocui.Attribute
Text string
Result string
ResultChan chan string
UbluinBuf string
UbluoutBuf string
}
// NewTextLineDialog instances a TextLineDialog.
func NewTextLineDialog(um *UbluManager, g *gocui.Gui, x int, y int, title string, bgc gocui.Attribute, fgc gocui.Attribute, text string) (tld *TextLineDialog) {
tld = &TextLineDialog{
UM: um,
G: g,
X: x,
Y: y,
Title: title,
BgColor: bgc,
FgColor: fgc,
Text: text,
Result: "",
}
return
}
func (tld *TextLineDialog) calcPos(maxX int, maxY int) (x1 int, y1 int, x2 int, y2 int) {
x1 = Max((maxX-tld.X)/2, 0)
x2 = maxX - x1
y1 = Max((maxY-tld.Y)/2, 0)
y2 = maxY - y1
return x1, y1, x2, y2
}
// Layout is the obligatory gocui layout redraw function.
func (tld *TextLineDialog) Layout(g *gocui.Gui) error {
x1, y1, x2, y2 := tld.calcPos(g.Size())
if v, err := g.SetView(tld.Title, x1, y1, x2, y2); err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.Title = " " + tld.Title + " "
v.Wrap = false
v.Highlight = true
v.BgColor = tld.BgColor
v.FgColor = tld.FgColor
fmt.Fprintf(v, "%s", tld.Text)
}
if _, err := g.SetCurrentView(tld.Title); err != nil {
return err
}
return nil
}
// StartDialog shows the dialog.
func (tld *TextLineDialog) StartDialog(exitChan chan string) error {
v, _ := tld.G.View("Ubluin")
tld.UbluinBuf = v.Buffer()
v, _ = tld.G.View("Ubluout")
tld.UbluoutBuf = v.Buffer()
tld.G.SetManager(tld.UM, tld)
tld.ResultChan = exitChan
tld.G.SetManager(tld.UM, tld)
tld.UM.Dialoging = true
if err := tld.G.SetKeybinding(tld.Title, gocui.KeyEnter, gocui.ModNone, tld.EndDialog); err != nil {
return err
}
if err := tld.G.SetKeybinding(tld.Title, gocui.KeyArrowDown, gocui.ModNone, cursorDown); err != nil {
return err
}
if err := tld.G.SetKeybinding(tld.Title, gocui.KeyArrowUp, gocui.ModNone, cursorUp); err != nil {
return err
}
return nil
}
func cursorUp(g *gocui.Gui, v *gocui.View) error {
if v != nil {
ox, oy := v.Origin()
cx, cy := v.Cursor()
if err := v.SetCursor(cx, cy-1); err != nil && oy > 0 {
if err := v.SetOrigin(ox, oy-1); err != nil {
return err
}
}
}
return nil
}
func cursorDown(g *gocui.Gui, v *gocui.View) error {
if v != nil {
cx, cy := v.Cursor()
if err := v.SetCursor(cx, cy+1); err != nil {
ox, oy := v.Origin()
if err := v.SetOrigin(ox, oy+1); err != nil {
return err
}
}
}
return nil
}
// EndDialog unshows the dialog and stores the result.
func (tld *TextLineDialog) EndDialog(g *gocui.Gui, v *gocui.View) error {
_, cy := v.Cursor()
text, _ := v.Line(cy)
tld.Result = strings.Trim(strings.TrimSpace(text), "\000")
g.SetManager(tld.UM)
tld.UM.Dialoging = false
tld.UM.Layout(g)
v, _ = g.View("Ubluin")
v.Clear()
for _, ch := range strings.Trim(strings.TrimSpace(tld.UbluinBuf), "\000") {
v.EditWrite(ch)
}
v, _ = g.View("Ubluout")
fmt.Fprintf(v, "%s\n", strings.Trim(strings.TrimSpace(tld.UbluoutBuf), "\000"))
tld.ResultChan <- tld.Result
return nil
}