aerc/widgets/aerc.go
Galen Abell 8635c70fda Add command history and cycling
Aerc will keep track of the previous 1000 commands, which the user can
cycle through using the arrow keys while in the ex-line. Pressing up
will move backwards in history while pressing down will move forward.
2019-07-26 14:29:34 -04:00

383 lines
8.6 KiB
Go

package widgets
import (
"errors"
"log"
"net/url"
"strings"
"time"
"github.com/gdamore/tcell"
"github.com/google/shlex"
"git.sr.ht/~sircmpwn/aerc/config"
"git.sr.ht/~sircmpwn/aerc/lib"
"git.sr.ht/~sircmpwn/aerc/lib/ui"
libui "git.sr.ht/~sircmpwn/aerc/lib/ui"
)
type Aerc struct {
accounts map[string]*AccountView
cmd func(cmd []string) error
cmdHistory lib.History
complete func(cmd string) []string
conf *config.AercConfig
focused libui.Interactive
grid *libui.Grid
logger *log.Logger
simulating int
statusbar *libui.Stack
statusline *StatusLine
pendingKeys []config.KeyStroke
tabs *libui.Tabs
}
func NewAerc(conf *config.AercConfig, logger *log.Logger,
cmd func(cmd []string) error, complete func(cmd string) []string,
cmdHistory lib.History) *Aerc {
tabs := libui.NewTabs()
statusbar := ui.NewStack()
statusline := NewStatusLine()
statusbar.Push(statusline)
grid := libui.NewGrid().Rows([]libui.GridSpec{
{libui.SIZE_EXACT, 1},
{libui.SIZE_WEIGHT, 1},
{libui.SIZE_EXACT, 1},
}).Columns([]libui.GridSpec{
{libui.SIZE_WEIGHT, 1},
})
grid.AddChild(tabs.TabStrip)
grid.AddChild(tabs.TabContent).At(1, 0)
grid.AddChild(statusbar).At(2, 0)
aerc := &Aerc{
accounts: make(map[string]*AccountView),
conf: conf,
cmd: cmd,
cmdHistory: cmdHistory,
complete: complete,
grid: grid,
logger: logger,
statusbar: statusbar,
statusline: statusline,
tabs: tabs,
}
statusline.SetAerc(aerc)
conf.Triggers.ExecuteCommand = cmd
for i, acct := range conf.Accounts {
view := NewAccountView(conf, &conf.Accounts[i], logger, aerc)
aerc.accounts[acct.Name] = view
tabs.Add(view, acct.Name)
}
if len(conf.Accounts) == 0 {
wizard := NewAccountWizard(aerc.Config(), aerc)
wizard.Focus(true)
aerc.NewTab(wizard, "New account")
}
return aerc
}
func (aerc *Aerc) Tick() bool {
more := false
for _, acct := range aerc.accounts {
more = acct.Tick() || more
}
return more
}
func (aerc *Aerc) Children() []ui.Drawable {
return aerc.grid.Children()
}
func (aerc *Aerc) OnInvalidate(onInvalidate func(d libui.Drawable)) {
aerc.grid.OnInvalidate(func(_ libui.Drawable) {
onInvalidate(aerc)
})
}
func (aerc *Aerc) Invalidate() {
aerc.grid.Invalidate()
}
func (aerc *Aerc) Focus(focus bool) {
// who cares
}
func (aerc *Aerc) Draw(ctx *libui.Context) {
aerc.grid.Draw(ctx)
}
func (aerc *Aerc) getBindings() *config.KeyBindings {
switch view := aerc.SelectedTab().(type) {
case *AccountView:
return aerc.conf.Bindings.MessageList
case *AccountWizard:
return aerc.conf.Bindings.AccountWizard
case *Composer:
switch view.Bindings() {
case "compose::editor":
return aerc.conf.Bindings.ComposeEditor
case "compose::review":
return aerc.conf.Bindings.ComposeReview
default:
return aerc.conf.Bindings.Compose
}
case *MessageViewer:
return aerc.conf.Bindings.MessageView
case *Terminal:
return aerc.conf.Bindings.Terminal
default:
return aerc.conf.Bindings.Global
}
}
func (aerc *Aerc) simulate(strokes []config.KeyStroke) {
aerc.pendingKeys = []config.KeyStroke{}
aerc.simulating += 1
for _, stroke := range strokes {
simulated := tcell.NewEventKey(
stroke.Key, stroke.Rune, tcell.ModNone)
aerc.Event(simulated)
}
aerc.simulating -= 1
}
func (aerc *Aerc) Event(event tcell.Event) bool {
if aerc.focused != nil {
return aerc.focused.Event(event)
}
switch event := event.(type) {
case *tcell.EventKey:
aerc.statusline.Expire()
aerc.pendingKeys = append(aerc.pendingKeys, config.KeyStroke{
Key: event.Key(),
Rune: event.Rune(),
})
aerc.statusline.Invalidate()
bindings := aerc.getBindings()
incomplete := false
result, strokes := bindings.GetBinding(aerc.pendingKeys)
switch result {
case config.BINDING_FOUND:
aerc.simulate(strokes)
return true
case config.BINDING_INCOMPLETE:
incomplete = true
case config.BINDING_NOT_FOUND:
}
if bindings.Globals {
result, strokes = aerc.conf.Bindings.Global.
GetBinding(aerc.pendingKeys)
switch result {
case config.BINDING_FOUND:
aerc.simulate(strokes)
return true
case config.BINDING_INCOMPLETE:
incomplete = true
case config.BINDING_NOT_FOUND:
}
}
if !incomplete {
aerc.pendingKeys = []config.KeyStroke{}
exKey := bindings.ExKey
if aerc.simulating > 0 {
// Keybindings still use : even if you change the ex key
exKey = aerc.conf.Bindings.Global.ExKey
}
if event.Key() == exKey.Key && event.Rune() == exKey.Rune {
aerc.BeginExCommand()
return true
}
interactive, ok := aerc.tabs.Tabs[aerc.tabs.Selected].Content.(ui.Interactive)
if ok {
return interactive.Event(event)
}
return false
}
case *tcell.EventMouse:
aerc.tabs.MouseEvent(event)
}
return false
}
func (aerc *Aerc) Config() *config.AercConfig {
return aerc.conf
}
func (aerc *Aerc) Logger() *log.Logger {
return aerc.logger
}
func (aerc *Aerc) SelectedAccount() *AccountView {
acct, ok := aerc.accounts[aerc.tabs.Tabs[aerc.tabs.Selected].Name]
if !ok {
return nil
}
return acct
}
func (aerc *Aerc) SelectedTab() ui.Drawable {
return aerc.tabs.Tabs[aerc.tabs.Selected].Content
}
func (aerc *Aerc) NewTab(drawable ui.Drawable, name string) *ui.Tab {
tab := aerc.tabs.Add(drawable, name)
aerc.tabs.Select(len(aerc.tabs.Tabs) - 1)
return tab
}
func (aerc *Aerc) RemoveTab(tab ui.Drawable) {
aerc.tabs.Remove(tab)
}
func (aerc *Aerc) ReplaceTab(tabSrc ui.Drawable, tabTarget ui.Drawable, name string) {
aerc.tabs.Replace(tabSrc, tabTarget, name)
}
func (aerc *Aerc) NextTab() {
next := aerc.tabs.Selected + 1
if next >= len(aerc.tabs.Tabs) {
next = 0
}
aerc.tabs.Select(next)
}
func (aerc *Aerc) PrevTab() {
next := aerc.tabs.Selected - 1
if next < 0 {
next = len(aerc.tabs.Tabs) - 1
}
aerc.tabs.Select(next)
}
func (aerc *Aerc) SelectTab(name string) bool {
for i, tab := range aerc.tabs.Tabs {
if tab.Name == name {
aerc.tabs.Select(i)
return true
}
}
return false
}
func (aerc *Aerc) TabNames() []string {
var names []string
for _, tab := range aerc.tabs.Tabs {
names = append(names, tab.Name)
}
return names
}
func (aerc *Aerc) SelectPreviousTab() bool {
return aerc.tabs.SelectPrevious()
}
// TODO: Use per-account status lines, but a global ex line
func (aerc *Aerc) SetStatus(status string) *StatusMessage {
return aerc.statusline.Set(status)
}
func (aerc *Aerc) PushStatus(text string, expiry time.Duration) *StatusMessage {
return aerc.statusline.Push(text, expiry)
}
func (aerc *Aerc) PushError(text string) {
aerc.PushStatus(text, 10*time.Second).Color(tcell.ColorDefault, tcell.ColorRed)
}
func (aerc *Aerc) focus(item libui.Interactive) {
if aerc.focused == item {
return
}
if aerc.focused != nil {
aerc.focused.Focus(false)
}
aerc.focused = item
interactive, ok := aerc.tabs.Tabs[aerc.tabs.Selected].Content.(ui.Interactive)
if item != nil {
item.Focus(true)
if ok {
interactive.Focus(false)
}
} else {
if ok {
interactive.Focus(true)
}
}
}
func (aerc *Aerc) BeginExCommand() {
previous := aerc.focused
exline := NewExLine(func(cmd string) {
parts, err := shlex.Split(cmd)
if err != nil {
aerc.PushStatus(" "+err.Error(), 10*time.Second).
Color(tcell.ColorDefault, tcell.ColorRed)
}
err = aerc.cmd(parts)
if err != nil {
aerc.PushStatus(" "+err.Error(), 10*time.Second).
Color(tcell.ColorDefault, tcell.ColorRed)
}
// only add to history if this is an unsimulated command,
// ie one not executed from a keybinding
if aerc.simulating == 0 {
aerc.cmdHistory.Add(cmd)
}
aerc.statusbar.Pop()
aerc.focus(previous)
}, func() {
aerc.statusbar.Pop()
aerc.focus(previous)
}, func(cmd string) []string {
return aerc.complete(cmd)
}, aerc.cmdHistory)
aerc.statusbar.Push(exline)
aerc.focus(exline)
}
func (aerc *Aerc) Mailto(addr *url.URL) error {
acct := aerc.SelectedAccount()
if acct == nil {
return errors.New("No account selected")
}
defaults := make(map[string]string)
defaults["To"] = addr.Opaque
headerMap := map[string]string{
"cc": "Cc",
"in-reply-to": "In-Reply-To",
"subject": "Subject",
}
for key, vals := range addr.Query() {
if header, ok := headerMap[strings.ToLower(key)]; ok {
defaults[header] = strings.Join(vals, ",")
}
}
composer := NewComposer(aerc.Config(),
acct.AccountConfig(), acct.Worker(), defaults)
composer.FocusSubject()
title := "New email"
if subj, ok := defaults["Subject"]; ok {
title = subj
composer.FocusTerminal()
}
tab := aerc.NewTab(composer, title)
composer.OnHeaderChange("Subject", func(subject string) {
if subject == "" {
tab.Name = "New email"
} else {
tab.Name = subject
}
tab.Content.Invalidate()
})
return nil
}