termui: add and remove labels

1 files changed, 96 insertions, 0 deletions

diff --git a/termui/input_popup.go b/termui/input_popup.go
new file mode 100644
index 00000000..00e602e5
--- /dev/null
+++ b/termui/input_popup.go
@@ -0,0 +1,96 @@
+package termui
+
+import (
+	"io/ioutil"
+
+	"github.com/jroimartin/gocui"
+)
+
+const inputPopupView = "inputPopupView"
+
+type inputPopup struct {
+	active bool
+	title  string
+	c      chan string
+}
+
+func newInputPopup() *inputPopup {
+	return &inputPopup{}
+}
+
+func (ip *inputPopup) keybindings(g *gocui.Gui) error {
+	// Close
+	if err := g.SetKeybinding(inputPopupView, gocui.KeyEsc, gocui.ModNone, ip.close); err != nil {
+		return err
+	}
+
+	// Validate
+	if err := g.SetKeybinding(inputPopupView, gocui.KeyEnter, gocui.ModNone, ip.validate); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (ip *inputPopup) layout(g *gocui.Gui) error {
+	if !ip.active {
+		return nil
+	}
+
+	maxX, maxY := g.Size()
+
+	width := minInt(30, maxX)
+	height := 2
+	x0 := (maxX - width) / 2
+	y0 := (maxY - height) / 2
+
+	v, err := g.SetView(inputPopupView, x0, y0, x0+width, y0+height)
+	if err != nil {
+		if err != gocui.ErrUnknownView {
+			return err
+		}
+
+		v.Frame = true
+		v.Title = ip.title
+		v.Editable = true
+	}
+
+	if _, err := g.SetCurrentView(inputPopupView); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (ip *inputPopup) close(g *gocui.Gui, v *gocui.View) error {
+	ip.title = ""
+	ip.active = false
+	return g.DeleteView(inputPopupView)
+}
+
+func (ip *inputPopup) validate(g *gocui.Gui, v *gocui.View) error {
+	ip.title = ""
+
+	content, err := ioutil.ReadAll(v)
+	if err != nil {
+		return err
+	}
+
+	ip.title = ""
+	ip.active = false
+	err = g.DeleteView(inputPopupView)
+	if err != nil {
+		return err
+	}
+
+	ip.c <- string(content)
+
+	return nil
+}
+
+func (ip *inputPopup) Activate(title string) <-chan string {
+	ip.title = title
+	ip.active = true
+	ip.c = make(chan string)
+	return ip.c
+}