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// lots of this has been directly ported from one of the example files, will brush up later
// Copyright 2014 The gocui Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"strings"
"github.com/fatih/color"
"github.com/jesseduffield/gocui"
)
func wrappedConfirmationFunction(function func(*gocui.Gui, *gocui.View) error) func(*gocui.Gui, *gocui.View) error {
return func(g *gocui.Gui, v *gocui.View) error {
if function != nil {
if err := function(g, v); err != nil {
panic(err)
}
}
return closeConfirmationPrompt(g)
}
}
func closeConfirmationPrompt(g *gocui.Gui) error {
view, err := g.View("confirmation")
if err != nil {
panic(err)
}
if err := returnFocus(g, view); err != nil {
panic(err)
}
g.DeleteKeybindings("confirmation")
return g.DeleteView("confirmation")
}
func getMessageHeight(message string, width int) int {
lines := strings.Split(message, "\n")
lineCount := 0
for _, line := range lines {
lineCount += len(line)/width + 1
}
return lineCount
}
func getConfirmationPanelDimensions(g *gocui.Gui, prompt string) (int, int, int, int) {
width, height := g.Size()
panelWidth := width / 2
panelHeight := getMessageHeight(prompt, panelWidth)
return width/2 - panelWidth/2,
height/2 - panelHeight/2 - panelHeight%2 - 1,
width/2 + panelWidth/2,
height/2 + panelHeight/2
}
func createPromptPanel(g *gocui.Gui, currentView *gocui.View, title string, handleConfirm func(*gocui.Gui, *gocui.View) error) error {
g.SetViewOnBottom("commitMessage")
// only need to fit one line
x0, y0, x1, y1 := getConfirmationPanelDimensions(g, "")
if confirmationView, err := g.SetView("confirmation", x0, y0, x1, y1, 0); err != nil {
if err != gocui.ErrUnknownView {
return err
}
confirmationView.Editable = true
confirmationView.Title = title
switchFocus(g, currentView, confirmationView)
return setKeyBindings(g, handleConfirm, nil)
}
return nil
}
func createConfirmationPanel(g *gocui.Gui, currentView *gocui.View, title, prompt string, handleConfirm, handleClose func(*gocui.Gui, *gocui.View) error) error {
g.SetViewOnBottom("commitMessage")
g.Update(func(g *gocui.Gui) error {
// delete the existing confirmation panel if it exists
if view, _ := g.View("confirmation"); view != nil {
if err := closeConfirmationPrompt(g); err != nil {
panic(err)
}
}
x0, y0, x1, y1 := getConfirmationPanelDimensions(g, prompt)
if confirmationView, err := g.SetView("confirmation", x0, y0, x1, y1, 0); err != nil {
if err != gocui.ErrUnknownView {
return err
}
confirmationView.Title = title
confirmationView.FgColor = gocui.ColorWhite
renderString(g, "confirmation", prompt)
switchFocus(g, currentView, confirmationView)
return setKeyBindings(g, handleConfirm, handleClose)
}
return nil
})
return nil
}
func handleNewline(g *gocui.Gui, v *gocui.View) error {
// resising ahead of time so that the top line doesn't get hidden to make
// room for the cursor on the second line
x0, y0, x1, y1 := getConfirmationPanelDimensions(g, v.Buffer())
if _, err := g.SetView("confirmation", x0, y0, x1, y1+1, 0); err != nil {
if err != gocui.ErrUnknownView {
return err
}
}
v.EditNewLine()
return nil
}
func setKeyBindings(g *gocui.Gui, handleConfirm, handleClose func(*gocui.Gui, *gocui.View) error) error {
renderString(g, "options", "esc: close, enter: confirm")
if err := g.SetKeybinding("confirmation", gocui.KeyEnter, gocui.ModNone, wrappedConfirmationFunction(handleConfirm)); err != nil {
return err
}
if err := g.SetKeybinding("confirmation", gocui.KeyTab, gocui.ModNone, handleNewline); err != nil {
return err
}
return g.SetKeybinding("confirmation", gocui.KeyEsc, gocui.ModNone, wrappedConfirmationFunction(handleClose))
}
func createMessagePanel(g *gocui.Gui, currentView *gocui.View, title, prompt string) error {
return createConfirmationPanel(g, currentView, title, prompt, nil, nil)
}
func createErrorPanel(g *gocui.Gui, message string) error {
currentView := g.CurrentView()
colorFunction := color.New(color.FgRed).SprintFunc()
coloredMessage := colorFunction(strings.TrimSpace(message))
return createConfirmationPanel(g, currentView, "Error", coloredMessage, nil, nil)
}
func trimTrailingNewline(str string) string {
if strings.HasSuffix(str, "\n") {
return str[:len(str)-1]
}
return str
}
func resizePopupPanel(g *gocui.Gui, v *gocui.View) error {
// If the confirmation panel is already displayed, just resize the width,
// otherwise continue
content := trimTrailingNewline(v.Buffer())
x0, y0, x1, y1 := getConfirmationPanelDimensions(g, content)
vx0, vy0, vx1, vy1 := v.Dimensions()
if vx0 == x0 && vy0 == y0 && vx1 == x1 && vy1 == y1 {
return nil
}
devLog("resizing popup panel")
_, err := g.SetView(v.Name(), x0, y0, x1, y1, 0)
return err
}
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