import (
"bufio"
"bytes"
+ "encoding/gob"
"fmt"
"os"
"strconv"
- "strings"
+ "github.com/mattn/go-runewidth"
"github.com/zyedidia/clipboard"
+ "github.com/zyedidia/micro/cmd/micro/shellwords"
"github.com/zyedidia/tcell"
)
screenWasNil := screen == nil
if !screenWasNil {
screen.Fini()
+ screen = nil
}
fmt.Println(msg...)
// Messenger is an object that makes it easy to send messages to the user
// and get input from the user
type Messenger struct {
+ log *Buffer
// Are we currently prompting the user?
hasPrompt bool
// Is there a message to print
gutterMessage bool
}
+// AddLog sends a message to the log view
+func (m *Messenger) AddLog(msg ...interface{}) {
+ logMessage := fmt.Sprint(msg...)
+ buffer := m.getBuffer()
+ buffer.insert(buffer.End(), []byte(logMessage+"\n"))
+ buffer.Cursor.Loc = buffer.End()
+ buffer.Cursor.Relocate()
+}
+
+func (m *Messenger) getBuffer() *Buffer {
+ if m.log == nil {
+ m.log = NewBufferFromString("", "")
+ m.log.name = "Log"
+ }
+ return m.log
+}
+
// Message sends a message to the user
func (m *Messenger) Message(msg ...interface{}) {
- buf := new(bytes.Buffer)
- fmt.Fprint(buf, msg...)
- m.message = buf.String()
- m.style = defStyle
+ displayMessage := fmt.Sprint(msg...)
+ // only display a new message if there isn't an active prompt
+ // this is to prevent overwriting an existing prompt to the user
+ if m.hasPrompt == false {
+ // if there is no active prompt then style and display the message as normal
+ m.message = displayMessage
- if _, ok := colorscheme["message"]; ok {
- m.style = colorscheme["message"]
+ m.style = defStyle
+
+ if _, ok := colorscheme["message"]; ok {
+ m.style = colorscheme["message"]
+ }
+
+ m.hasMessage = true
}
- m.hasMessage = true
+ // add the message to the log regardless of active prompts
+ m.AddLog(displayMessage)
}
// Error sends an error message to the user
func (m *Messenger) Error(msg ...interface{}) {
buf := new(bytes.Buffer)
fmt.Fprint(buf, msg...)
- m.message = buf.String()
- m.style = defStyle.
- Foreground(tcell.ColorBlack).
- Background(tcell.ColorMaroon)
- if _, ok := colorscheme["error-message"]; ok {
- m.style = colorscheme["error-message"]
+ // only display a new message if there isn't an active prompt
+ // this is to prevent overwriting an existing prompt to the user
+ if m.hasPrompt == false {
+ // if there is no active prompt then style and display the message as normal
+ m.message = buf.String()
+ m.style = defStyle.
+ Foreground(tcell.ColorBlack).
+ Background(tcell.ColorMaroon)
+
+ if _, ok := colorscheme["error-message"]; ok {
+ m.style = colorscheme["error-message"]
+ }
+ m.hasMessage = true
}
+ // add the message to the log regardless of active prompts
+ m.AddLog(buf.String())
+}
+
+func (m *Messenger) PromptText(msg ...interface{}) {
+ displayMessage := fmt.Sprint(msg...)
+ // if there is no active prompt then style and display the message as normal
+ m.message = displayMessage
+
+ m.style = defStyle
+
+ if _, ok := colorscheme["message"]; ok {
+ m.style = colorscheme["message"]
+ }
+
m.hasMessage = true
+ // add the message to the log regardless of active prompts
+ m.AddLog(displayMessage)
}
// YesNoPrompt asks the user a yes or no question (waits for y or n) and returns the result
func (m *Messenger) YesNoPrompt(prompt string) (bool, bool) {
- m.Message(prompt)
+ m.hasPrompt = true
+ m.PromptText(prompt)
_, h := screen.Size()
for {
case *tcell.EventKey:
switch e.Key() {
case tcell.KeyRune:
- if e.Rune() == 'y' {
+ if e.Rune() == 'y' || e.Rune() == 'Y' {
+ m.AddLog("\t--> y")
+ m.hasPrompt = false
return true, false
- } else if e.Rune() == 'n' {
+ } else if e.Rune() == 'n' || e.Rune() == 'N' {
+ m.AddLog("\t--> n")
+ m.hasPrompt = false
return false, false
}
case tcell.KeyCtrlC, tcell.KeyCtrlQ, tcell.KeyEscape:
+ m.AddLog("\t--> (cancel)")
+ m.Clear()
+ m.Reset()
+ m.hasPrompt = false
return false, true
}
}
// LetterPrompt gives the user a prompt and waits for a one letter response
func (m *Messenger) LetterPrompt(prompt string, responses ...rune) (rune, bool) {
- m.Message(prompt)
+ m.hasPrompt = true
+ m.PromptText(prompt)
_, h := screen.Size()
for {
case tcell.KeyRune:
for _, r := range responses {
if e.Rune() == r {
+ m.AddLog("\t--> " + string(r))
+ m.Clear()
m.Reset()
+ m.hasPrompt = false
return r, false
}
}
case tcell.KeyCtrlC, tcell.KeyCtrlQ, tcell.KeyEscape:
+ m.AddLog("\t--> (cancel)")
+ m.Clear()
+ m.Reset()
+ m.hasPrompt = false
return ' ', true
}
}
}
}
+// Completion represents a type of completion
type Completion int
const (
CommandCompletion
HelpCompletion
OptionCompletion
+ PluginCmdCompletion
+ PluginNameCompletion
+ OptionValueCompletion
)
// Prompt sends the user a message and waits for a response to be typed in
// This function blocks the main loop while waiting for input
-func (m *Messenger) Prompt(prompt, historyType string, completionTypes ...Completion) (string, bool) {
+func (m *Messenger) Prompt(prompt, placeholder, historyType string, completionTypes ...Completion) (string, bool) {
m.hasPrompt = true
- m.Message(prompt)
+ m.PromptText(prompt)
if _, ok := m.history[historyType]; !ok {
m.history[historyType] = []string{""}
} else {
}
m.historyNum = len(m.history[historyType]) - 1
- response, canceled := "", true
+ response, canceled := placeholder, true
+ m.response = response
+ m.cursorx = Count(placeholder)
RedrawAll()
for m.hasPrompt {
event := <-events
switch e := event.(type) {
+ case *tcell.EventResize:
+ for _, t := range tabs {
+ t.Resize()
+ }
+ RedrawAll()
case *tcell.EventKey:
switch e.Key() {
case tcell.KeyCtrlQ, tcell.KeyCtrlC, tcell.KeyEscape:
// Cancel
+ m.AddLog("\t--> (cancel)")
m.hasPrompt = false
case tcell.KeyEnter:
// User is done entering their response
+ m.AddLog("\t--> " + m.response)
m.hasPrompt = false
response, canceled = m.response, false
m.history[historyType][len(m.history[historyType])-1] = response
case tcell.KeyTab:
- args := strings.Split(m.response, " ")
- currentArgNum := len(args) - 1
- currentArg := args[currentArgNum]
+ args, err := shellwords.Split(m.response)
+ if err != nil {
+ break
+ }
+ currentArg := ""
+ currentArgNum := 0
+ if len(args) > 0 {
+ currentArgNum = len(args) - 1
+ currentArg = args[currentArgNum]
+ }
var completionType Completion
if completionTypes[0] == CommandCompletion && currentArgNum > 0 {
chosen, suggestions = HelpComplete(currentArg)
} else if completionType == OptionCompletion {
chosen, suggestions = OptionComplete(currentArg)
+ } else if completionType == OptionValueCompletion {
+ if currentArgNum-1 > 0 {
+ chosen, suggestions = OptionValueComplete(args[currentArgNum-1], currentArg)
+ }
+ } else if completionType == PluginCmdCompletion {
+ chosen, suggestions = PluginCmdComplete(currentArg)
+ } else if completionType == PluginNameCompletion {
+ chosen, suggestions = PluginNameComplete(currentArg)
} else if completionType < NoCompletion {
chosen, suggestions = PluginComplete(completionType, currentArg)
}
chosen = chosen + CommonSubstring(suggestions...)
}
- if chosen != "" {
- if len(args) > 1 {
- chosen = " " + chosen
- }
- m.response = strings.Join(args[:len(args)-1], " ") + chosen
+ if len(suggestions) != 0 && chosen != "" {
+ m.response = shellwords.Join(append(args[:len(args)-1], chosen)...)
m.cursorx = Count(m.response)
}
}
m.HandleEvent(event, m.history[historyType])
- messenger.Clear()
- for _, v := range tabs[curTab].views {
+ m.Clear()
+ for _, v := range tabs[curTab].Views {
v.Display()
}
DisplayTabs()
- messenger.Display()
+ m.Display()
if len(suggestions) > 1 {
m.DisplaySuggestions(suggestions)
}
screen.Show()
}
+ m.Clear()
m.Reset()
return response, canceled
}
+// UpHistory fetches the previous item in the history
+func (m *Messenger) UpHistory(history []string) {
+ if m.historyNum > 0 {
+ m.historyNum--
+ m.response = history[m.historyNum]
+ m.cursorx = Count(m.response)
+ }
+}
+
+// DownHistory fetches the next item in the history
+func (m *Messenger) DownHistory(history []string) {
+ if m.historyNum < len(history)-1 {
+ m.historyNum++
+ m.response = history[m.historyNum]
+ m.cursorx = Count(m.response)
+ }
+}
+
+// CursorLeft moves the cursor one character left
+func (m *Messenger) CursorLeft() {
+ if m.cursorx > 0 {
+ m.cursorx--
+ }
+}
+
+// CursorRight moves the cursor one character right
+func (m *Messenger) CursorRight() {
+ if m.cursorx < Count(m.response) {
+ m.cursorx++
+ }
+}
+
+// Start moves the cursor to the start of the line
+func (m *Messenger) Start() {
+ m.cursorx = 0
+}
+
+// End moves the cursor to the end of the line
+func (m *Messenger) End() {
+ m.cursorx = Count(m.response)
+}
+
+// Backspace deletes one character
+func (m *Messenger) Backspace() {
+ if m.cursorx > 0 {
+ m.response = string([]rune(m.response)[:m.cursorx-1]) + string([]rune(m.response)[m.cursorx:])
+ m.cursorx--
+ }
+}
+
+// Paste pastes the clipboard
+func (m *Messenger) Paste() {
+ clip, _ := clipboard.ReadAll("clipboard")
+ m.response = Insert(m.response, m.cursorx, clip)
+ m.cursorx += Count(clip)
+}
+
+// WordLeft moves the cursor one word to the left
+func (m *Messenger) WordLeft() {
+ response := []rune(m.response)
+ m.CursorLeft()
+ if m.cursorx <= 0 {
+ return
+ }
+ for IsWhitespace(response[m.cursorx]) {
+ if m.cursorx <= 0 {
+ return
+ }
+ m.CursorLeft()
+ }
+ m.CursorLeft()
+ for IsWordChar(string(response[m.cursorx])) {
+ if m.cursorx <= 0 {
+ return
+ }
+ m.CursorLeft()
+ }
+ m.CursorRight()
+}
+
+// WordRight moves the cursor one word to the right
+func (m *Messenger) WordRight() {
+ response := []rune(m.response)
+ if m.cursorx >= len(response) {
+ return
+ }
+ for IsWhitespace(response[m.cursorx]) {
+ m.CursorRight()
+ if m.cursorx >= len(response) {
+ m.CursorRight()
+ return
+ }
+ }
+ m.CursorRight()
+ if m.cursorx >= len(response) {
+ return
+ }
+ for IsWordChar(string(response[m.cursorx])) {
+ m.CursorRight()
+ if m.cursorx >= len(response) {
+ return
+ }
+ }
+}
+
+// DeleteWordLeft deletes one word to the left
+func (m *Messenger) DeleteWordLeft() {
+ m.WordLeft()
+ m.response = string([]rune(m.response)[:m.cursorx])
+}
+
// HandleEvent handles an event for the prompter
func (m *Messenger) HandleEvent(event tcell.Event, history []string) {
switch e := event.(type) {
case *tcell.EventKey:
switch e.Key() {
+ case tcell.KeyCtrlA:
+ m.Start()
+ case tcell.KeyCtrlE:
+ m.End()
case tcell.KeyUp:
- if m.historyNum > 0 {
- m.historyNum--
- m.response = history[m.historyNum]
- m.cursorx = Count(m.response)
- }
+ m.UpHistory(history)
case tcell.KeyDown:
- if m.historyNum < len(history)-1 {
- m.historyNum++
- m.response = history[m.historyNum]
- m.cursorx = Count(m.response)
- }
+ m.DownHistory(history)
case tcell.KeyLeft:
- if m.cursorx > 0 {
- m.cursorx--
+ if e.Modifiers() == tcell.ModCtrl {
+ m.Start()
+ } else if e.Modifiers() == tcell.ModAlt || e.Modifiers() == tcell.ModMeta {
+ m.WordLeft()
+ } else {
+ m.CursorLeft()
}
case tcell.KeyRight:
- if m.cursorx < Count(m.response) {
- m.cursorx++
+ if e.Modifiers() == tcell.ModCtrl {
+ m.End()
+ } else if e.Modifiers() == tcell.ModAlt || e.Modifiers() == tcell.ModMeta {
+ m.WordRight()
+ } else {
+ m.CursorRight()
}
case tcell.KeyBackspace2, tcell.KeyBackspace:
- if m.cursorx > 0 {
- m.response = string([]rune(m.response)[:m.cursorx-1]) + string([]rune(m.response)[m.cursorx:])
- m.cursorx--
+ if e.Modifiers() == tcell.ModCtrl || e.Modifiers() == tcell.ModAlt || e.Modifiers() == tcell.ModMeta {
+ m.DeleteWordLeft()
+ } else {
+ m.Backspace()
}
+ case tcell.KeyCtrlW:
+ m.DeleteWordLeft()
case tcell.KeyCtrlV:
- clip, _ := clipboard.ReadAll()
- m.response = Insert(m.response, m.cursorx, clip)
- m.cursorx += Count(clip)
+ m.Paste()
+ case tcell.KeyCtrlF:
+ m.WordRight()
+ case tcell.KeyCtrlB:
+ m.WordLeft()
case tcell.KeyRune:
m.response = Insert(m.response, m.cursorx, string(e.Rune()))
m.cursorx++
clip := e.Text()
m.response = Insert(m.response, m.cursorx, clip)
m.cursorx += Count(clip)
+ case *tcell.EventMouse:
+ x, y := e.Position()
+ x -= Count(m.message)
+ button := e.Buttons()
+ _, screenH := screen.Size()
+
+ if y == screenH-1 {
+ switch button {
+ case tcell.Button1:
+ m.cursorx = x
+ if m.cursorx < 0 {
+ m.cursorx = 0
+ } else if m.cursorx > Count(m.response) {
+ m.cursorx = Count(m.response)
+ }
+ }
+ }
}
}
func (m *Messenger) Display() {
_, h := screen.Size()
if m.hasMessage {
- if !m.hasPrompt && !globalSettings["infobar"].(bool) {
- return
- }
- runes := []rune(m.message + m.response)
- for x := 0; x < len(runes); x++ {
- screen.SetContent(x, h-1, runes[x], nil, m.style)
+ if m.hasPrompt || globalSettings["infobar"].(bool) {
+ runes := []rune(m.message + m.response)
+ posx := 0
+ for x := 0; x < len(runes); x++ {
+ screen.SetContent(posx, h-1, runes[x], nil, m.style)
+ posx += runewidth.RuneWidth(runes[x])
+ }
}
}
+
if m.hasPrompt {
screen.ShowCursor(Count(m.message)+m.cursorx, h-1)
screen.Show()
}
}
+// LoadHistory attempts to load user history from configDir/buffers/history
+// into the history map
+// The savehistory option must be on
+func (m *Messenger) LoadHistory() {
+ if GetGlobalOption("savehistory").(bool) {
+ file, err := os.Open(configDir + "/buffers/history")
+ defer file.Close()
+ var decodedMap map[string][]string
+ if err == nil {
+ decoder := gob.NewDecoder(file)
+ err = decoder.Decode(&decodedMap)
+
+ if err != nil {
+ m.Error("Error loading history:", err)
+ return
+ }
+ }
+
+ if decodedMap != nil {
+ m.history = decodedMap
+ } else {
+ m.history = make(map[string][]string)
+ }
+ } else {
+ m.history = make(map[string][]string)
+ }
+}
+
+// SaveHistory saves the user's command history to configDir/buffers/history
+// only if the savehistory option is on
+func (m *Messenger) SaveHistory() {
+ if GetGlobalOption("savehistory").(bool) {
+ // Don't save history past 100
+ for k, v := range m.history {
+ if len(v) > 100 {
+ m.history[k] = v[len(m.history[k])-100:]
+ }
+ }
+
+ file, err := os.Create(configDir + "/buffers/history")
+ defer file.Close()
+ if err == nil {
+ encoder := gob.NewEncoder(file)
+
+ err = encoder.Encode(m.history)
+ if err != nil {
+ m.Error("Error saving history:", err)
+ return
+ }
+ }
+ }
+}
+
// A GutterMessage is a message displayed on the side of the editor
type GutterMessage struct {
lineNum int
projects / micro.git / blobdiff