345 lines
7.3 KiB
Go
345 lines
7.3 KiB
Go
package editor
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import (
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"fmt"
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"strings"
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"git.gophernest.net/azpect/TextEditor/internal/action"
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"git.gophernest.net/azpect/TextEditor/internal/core"
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"git.gophernest.net/azpect/TextEditor/internal/input"
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"git.gophernest.net/azpect/TextEditor/internal/style"
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tea "github.com/charmbracelet/bubbletea"
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)
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type Model struct {
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// Buffers
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buffers []*core.Buffer
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//next buffer id?
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// Windows
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windows []*core.Window
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activeWindowId int
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// Editor wide state
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mode core.Mode
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// Terminal dimensions
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termWidth int
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termHeight int
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// Input and key handling
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input *input.Handler
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// Insert mode state & repetition (applied to active window)
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insertCount int
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insertKeys []string
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insertAction action.Action
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lastFind core.LastFindCommand
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// Command line state
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command string
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commandCursor int
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commandOutput *core.CommandOutput
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// Global settings
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settings core.EditorSettings
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// Registers
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registers map[rune]core.Register // name -> register
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// Visual styles
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styles style.Styles
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}
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// Model.Init: Initialize the model and start any commands that may need to run. Required
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// for the bubbletea architecture.
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func (m Model) Init() tea.Cmd {
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return nil
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}
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// Implement action.Model interface
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// ==================================================
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// Core Data Access
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// ==================================================
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func (m *Model) Windows() []*core.Window {
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return m.windows
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}
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func (m *Model) ActiveWindow() *core.Window {
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winId := m.activeWindowId
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for i := range m.Windows() {
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if m.windows[i].Id == winId {
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return m.windows[i]
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}
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}
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panic("Could not find window")
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}
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func (m *Model) Buffers() []*core.Buffer {
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return m.buffers
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}
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func (m *Model) SetBuffers(bufs []*core.Buffer) {
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m.buffers = bufs
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}
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func (m *Model) ActiveBuffer() *core.Buffer {
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win := m.ActiveWindow()
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return win.Buffer
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}
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// ==================================================
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// Insert Mode Methods
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// ==================================================
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func (m *Model) InsertKeys() []string {
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return m.insertKeys
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}
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func (m *Model) SetInsertKeys(keys []string) {
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m.insertKeys = keys
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}
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func (m *Model) SetInsertRecording(count int, act action.Action) {
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m.insertCount = count
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m.insertKeys = []string{}
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m.insertAction = act
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}
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func (m *Model) SetLastFind(char string, forward, inclusive bool) {
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m.lastFind = core.LastFindCommand{
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Char: char,
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Forward: forward,
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Inclusive: inclusive,
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}
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}
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func (m *Model) GetLastFind() *core.LastFindCommand {
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return &m.lastFind
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}
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func (m *Model) ExitInsertMode() {
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win := m.ActiveWindow()
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if m.insertCount > 1 {
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m.replayInsert()
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}
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if win.Cursor.Col > 0 {
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win.Cursor.Col--
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}
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m.mode = core.NormalMode
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m.insertCount = 0
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m.insertKeys = nil
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}
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func (m *Model) replayInsert() {
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win := m.ActiveWindow()
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buf := m.ActiveBuffer()
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// Replay (count - 1) more times
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for i := 1; i < m.insertCount; i++ {
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// For 'o' and 'O', we need to create a new line first
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switch m.insertAction.(type) {
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case action.OpenLineBelow:
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pos := win.Cursor.Line
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buf.InsertLine(pos+1, "")
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win.SetCursorLine(pos + 1)
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case action.OpenLineAbove:
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pos := win.Cursor.Line
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buf.InsertLine(pos, "")
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// 'i' and 'a' don't need setup - just replay keys
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}
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// Replay each recorded keystroke
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for _, key := range m.insertKeys {
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m.processInsertKey(key)
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}
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}
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}
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// TODO: Fix this shitty shit shit shit
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func (m *Model) processInsertKey(key string) {
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win := m.ActiveWindow()
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buf := m.ActiveBuffer()
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col := win.Cursor.Col
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line := win.Cursor.Line
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l := buf.Line(line)
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switch key {
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case "enter":
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if col == len(l) {
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buf.InsertLine(line+1, "")
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} else {
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buf.SetLine(line, l[:col])
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buf.InsertLine(line+1, l[col:])
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}
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win.SetCursorLine(line + 1)
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win.SetCursorCol(0)
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case "backspace":
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if col > 0 {
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buf.SetLine(line, l[:col-1]+l[col:])
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win.SetCursorCol(col - 1)
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} else if line > 0 {
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prevLine := buf.Line(line - 1)
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newCol := len(prevLine)
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buf.SetLine(line-1, prevLine+l)
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buf.DeleteLine(line)
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win.SetCursorLine(line - 1)
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win.SetCursorCol(newCol)
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}
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case "delete":
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if col == len(l) && line < buf.LineCount()-1 {
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nextLine := buf.Line(line + 1)
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buf.SetLine(line, l+nextLine)
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buf.DeleteLine(line + 1)
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} else if col < len(l) {
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buf.SetLine(line, l[:col]+l[col+1:])
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}
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case "tab":
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tabs := strings.Repeat(" ", m.Settings().TabStop)
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if col < len(l) {
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buf.SetLine(line, l[:col]+tabs+l[col:])
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} else {
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buf.SetLine(line, l+tabs)
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}
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win.SetCursorCol(col + len(tabs))
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case "up":
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if line > 0 {
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win.SetCursorLine(line - 1)
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}
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case "down":
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if line+1 < buf.LineCount() {
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win.SetCursorLine(line + 1)
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}
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case "left":
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if col > 0 {
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win.SetCursorCol(col - 1)
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} else if line > 0 {
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prevLine := buf.Line(line - 1)
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win.SetCursorCol(len(prevLine))
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win.SetCursorLine(line - 1)
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}
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case "right":
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if col < len(l) {
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win.SetCursorCol(col + 1)
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} else if line+1 < buf.LineCount() {
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win.SetCursorCol(0)
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win.SetCursorLine(line + 1)
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}
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default:
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if col < len(l) {
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buf.SetLine(line, l[:col]+key+l[col:])
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} else {
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buf.SetLine(line, l+key)
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}
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win.SetCursorCol(col + len(key))
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}
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}
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// ==================================================
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// Command Mode State
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// ==================================================
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func (m *Model) Command() string {
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return m.command
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}
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func (m *Model) SetCommand(cmd string) {
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m.command = cmd
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}
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func (m *Model) CommandCursor() int {
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return m.commandCursor
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}
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func (m *Model) SetCommandCursor(cur int) {
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if cur < 0 {
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m.commandCursor = 0
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} else if cur >= len(m.command) {
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m.commandCursor = len(m.command)
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} else {
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m.commandCursor = cur
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}
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}
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func (m *Model) CommandOutput() *core.CommandOutput {
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return m.commandOutput
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}
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func (m *Model) SetCommandOutput(out *core.CommandOutput) {
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m.commandOutput = out
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}
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// ==================================================
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// Editor-wide State
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// ==================================================
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func (m *Model) Mode() core.Mode {
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return m.mode
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}
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func (m *Model) SetMode(mode core.Mode) {
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m.mode = mode
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}
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func (m *Model) Settings() core.EditorSettings {
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return m.settings
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}
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func (m *Model) SetSettings(s core.EditorSettings) {
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m.settings = s
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}
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// Model.Styles: Returns the visual styles used for rendering.
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func (m *Model) Styles() style.Styles {
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return m.styles
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}
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// Model.SetStyles: Sets the visual styles used for rendering.
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func (m *Model) SetStyles(s style.Styles) {
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m.styles = s
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}
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// ==================================================
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// Registers
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// ==================================================
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func (m *Model) Registers() map[rune]core.Register {
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return m.registers
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}
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func (m *Model) GetRegister(name rune) (core.Register, bool) {
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reg, found := m.registers[name]
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return reg, found
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}
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func (m *Model) SetRegister(name rune, t core.RegisterType, cnt []string) error {
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if _, found := m.GetRegister(name); !found {
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return fmt.Errorf("Register '%c' does not exist.", name)
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}
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// TODO: This might be slow, pointers maybe?
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reg := core.Register{Type: t, Content: cnt}
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m.registers[name] = reg
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return nil
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}
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func (m *Model) UpdateDefaultRegister(t core.RegisterType, cnt []string) {
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// Shift numbered registers: 0 -> 1 -> 2 -> ... -> 9 -> _ (discarded)
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for i := rune('9'); i > '0'; i-- {
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m.registers[i] = m.registers[i-1]
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}
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// 0 and " both hold the new content independently
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m.SetRegister('0', t, cnt)
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m.SetRegister('"', t, cnt)
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}
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