mirror of
https://github.com/zyedidia/micro.git
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de9567322b
This commit changes the default keybindings for Home and End. It also changes the InsertEnter action to InsertNewline (a better name) although InsertEnter is still valid for backwards compatibility. Closes #206
416 lines
13 KiB
Go
416 lines
13 KiB
Go
package main
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import (
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"encoding/json"
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"io/ioutil"
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"os"
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"strings"
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"github.com/zyedidia/tcell"
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)
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var bindings map[Key][]func(*View) bool
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var helpBinding string
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var bindingActions = map[string]func(*View) bool{
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"CursorUp": (*View).CursorUp,
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"CursorDown": (*View).CursorDown,
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"CursorPageUp": (*View).CursorPageUp,
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"CursorPageDown": (*View).CursorPageDown,
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"CursorLeft": (*View).CursorLeft,
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"CursorRight": (*View).CursorRight,
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"CursorStart": (*View).CursorStart,
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"CursorEnd": (*View).CursorEnd,
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"SelectToStart": (*View).SelectToStart,
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"SelectToEnd": (*View).SelectToEnd,
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"SelectUp": (*View).SelectUp,
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"SelectDown": (*View).SelectDown,
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"SelectLeft": (*View).SelectLeft,
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"SelectRight": (*View).SelectRight,
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"WordRight": (*View).WordRight,
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"WordLeft": (*View).WordLeft,
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"SelectWordRight": (*View).SelectWordRight,
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"SelectWordLeft": (*View).SelectWordLeft,
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"DeleteWordRight": (*View).DeleteWordRight,
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"DeleteWordLeft": (*View).DeleteWordLeft,
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"SelectToStartOfLine": (*View).SelectToStartOfLine,
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"SelectToEndOfLine": (*View).SelectToEndOfLine,
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"InsertNewline": (*View).InsertNewline,
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"InsertSpace": (*View).InsertSpace,
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"Backspace": (*View).Backspace,
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"Delete": (*View).Delete,
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"InsertTab": (*View).InsertTab,
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"Save": (*View).Save,
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"Find": (*View).Find,
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"FindNext": (*View).FindNext,
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"FindPrevious": (*View).FindPrevious,
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"Undo": (*View).Undo,
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"Redo": (*View).Redo,
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"Copy": (*View).Copy,
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"Cut": (*View).Cut,
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"CutLine": (*View).CutLine,
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"DuplicateLine": (*View).DuplicateLine,
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"DeleteLine": (*View).DeleteLine,
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"IndentSelection": (*View).IndentSelection,
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"OutdentSelection": (*View).OutdentSelection,
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"Paste": (*View).Paste,
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"SelectAll": (*View).SelectAll,
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"OpenFile": (*View).OpenFile,
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"Start": (*View).Start,
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"End": (*View).End,
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"PageUp": (*View).PageUp,
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"PageDown": (*View).PageDown,
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"HalfPageUp": (*View).HalfPageUp,
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"HalfPageDown": (*View).HalfPageDown,
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"StartOfLine": (*View).StartOfLine,
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"EndOfLine": (*View).EndOfLine,
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"ToggleHelp": (*View).ToggleHelp,
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"ToggleRuler": (*View).ToggleRuler,
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"JumpLine": (*View).JumpLine,
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"ClearStatus": (*View).ClearStatus,
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"ShellMode": (*View).ShellMode,
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"CommandMode": (*View).CommandMode,
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"Quit": (*View).Quit,
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"AddTab": (*View).AddTab,
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"PreviousTab": (*View).PreviousTab,
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"NextTab": (*View).NextTab,
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"NextSplit": (*View).NextSplit,
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"PreviousSplit": (*View).PreviousSplit,
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// This was changed to InsertNewline but I don't want to break backwards compatibility
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"InsertEnter": (*View).InsertNewline,
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}
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var bindingKeys = map[string]tcell.Key{
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"Up": tcell.KeyUp,
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"Down": tcell.KeyDown,
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"Right": tcell.KeyRight,
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"Left": tcell.KeyLeft,
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"UpLeft": tcell.KeyUpLeft,
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"UpRight": tcell.KeyUpRight,
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"DownLeft": tcell.KeyDownLeft,
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"DownRight": tcell.KeyDownRight,
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"Center": tcell.KeyCenter,
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"PageUp": tcell.KeyPgUp,
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"PageDown": tcell.KeyPgDn,
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"Home": tcell.KeyHome,
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"End": tcell.KeyEnd,
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"Insert": tcell.KeyInsert,
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"Delete": tcell.KeyDelete,
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"Help": tcell.KeyHelp,
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"Exit": tcell.KeyExit,
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"Clear": tcell.KeyClear,
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"Cancel": tcell.KeyCancel,
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"Print": tcell.KeyPrint,
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"Pause": tcell.KeyPause,
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"Backtab": tcell.KeyBacktab,
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"F1": tcell.KeyF1,
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"F2": tcell.KeyF2,
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"F3": tcell.KeyF3,
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"F4": tcell.KeyF4,
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"F5": tcell.KeyF5,
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"F6": tcell.KeyF6,
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"F7": tcell.KeyF7,
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"F8": tcell.KeyF8,
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"F9": tcell.KeyF9,
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"F10": tcell.KeyF10,
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"F11": tcell.KeyF11,
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"F12": tcell.KeyF12,
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"F13": tcell.KeyF13,
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"F14": tcell.KeyF14,
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"F15": tcell.KeyF15,
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"F16": tcell.KeyF16,
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"F17": tcell.KeyF17,
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"F18": tcell.KeyF18,
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"F19": tcell.KeyF19,
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"F20": tcell.KeyF20,
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"F21": tcell.KeyF21,
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"F22": tcell.KeyF22,
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"F23": tcell.KeyF23,
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"F24": tcell.KeyF24,
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"F25": tcell.KeyF25,
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"F26": tcell.KeyF26,
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"F27": tcell.KeyF27,
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"F28": tcell.KeyF28,
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"F29": tcell.KeyF29,
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"F30": tcell.KeyF30,
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"F31": tcell.KeyF31,
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"F32": tcell.KeyF32,
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"F33": tcell.KeyF33,
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"F34": tcell.KeyF34,
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"F35": tcell.KeyF35,
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"F36": tcell.KeyF36,
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"F37": tcell.KeyF37,
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"F38": tcell.KeyF38,
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"F39": tcell.KeyF39,
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"F40": tcell.KeyF40,
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"F41": tcell.KeyF41,
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"F42": tcell.KeyF42,
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"F43": tcell.KeyF43,
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"F44": tcell.KeyF44,
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"F45": tcell.KeyF45,
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"F46": tcell.KeyF46,
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"F47": tcell.KeyF47,
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"F48": tcell.KeyF48,
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"F49": tcell.KeyF49,
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"F50": tcell.KeyF50,
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"F51": tcell.KeyF51,
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"F52": tcell.KeyF52,
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"F53": tcell.KeyF53,
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"F54": tcell.KeyF54,
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"F55": tcell.KeyF55,
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"F56": tcell.KeyF56,
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"F57": tcell.KeyF57,
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"F58": tcell.KeyF58,
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"F59": tcell.KeyF59,
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"F60": tcell.KeyF60,
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"F61": tcell.KeyF61,
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"F62": tcell.KeyF62,
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"F63": tcell.KeyF63,
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"F64": tcell.KeyF64,
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"CtrlSpace": tcell.KeyCtrlSpace,
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"CtrlA": tcell.KeyCtrlA,
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"CtrlB": tcell.KeyCtrlB,
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"CtrlC": tcell.KeyCtrlC,
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"CtrlD": tcell.KeyCtrlD,
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"CtrlE": tcell.KeyCtrlE,
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"CtrlF": tcell.KeyCtrlF,
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"CtrlG": tcell.KeyCtrlG,
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"CtrlH": tcell.KeyCtrlH,
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"CtrlI": tcell.KeyCtrlI,
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"CtrlJ": tcell.KeyCtrlJ,
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"CtrlK": tcell.KeyCtrlK,
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"CtrlL": tcell.KeyCtrlL,
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"CtrlM": tcell.KeyCtrlM,
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"CtrlN": tcell.KeyCtrlN,
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"CtrlO": tcell.KeyCtrlO,
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"CtrlP": tcell.KeyCtrlP,
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"CtrlQ": tcell.KeyCtrlQ,
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"CtrlR": tcell.KeyCtrlR,
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"CtrlS": tcell.KeyCtrlS,
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"CtrlT": tcell.KeyCtrlT,
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"CtrlU": tcell.KeyCtrlU,
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"CtrlV": tcell.KeyCtrlV,
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"CtrlW": tcell.KeyCtrlW,
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"CtrlX": tcell.KeyCtrlX,
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"CtrlY": tcell.KeyCtrlY,
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"CtrlZ": tcell.KeyCtrlZ,
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"CtrlLeftSq": tcell.KeyCtrlLeftSq,
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"CtrlBackslash": tcell.KeyCtrlBackslash,
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"CtrlRightSq": tcell.KeyCtrlRightSq,
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"CtrlCarat": tcell.KeyCtrlCarat,
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"CtrlUnderscore": tcell.KeyCtrlUnderscore,
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"Backspace": tcell.KeyBackspace,
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"Tab": tcell.KeyTab,
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"Esc": tcell.KeyEsc,
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"Escape": tcell.KeyEscape,
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"Enter": tcell.KeyEnter,
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"Backspace2": tcell.KeyBackspace2,
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// I renamed these keys to PageUp and PageDown but I don't want to break someone's keybindings
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"PgUp": tcell.KeyPgUp,
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"PgDown": tcell.KeyPgDn,
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}
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// The Key struct holds the data for a keypress (keycode + modifiers)
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type Key struct {
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keyCode tcell.Key
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modifiers tcell.ModMask
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r rune
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}
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// InitBindings initializes the keybindings for micro
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func InitBindings() {
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bindings = make(map[Key][]func(*View) bool)
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var parsed map[string]string
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defaults := DefaultBindings()
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filename := configDir + "/bindings.json"
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if _, e := os.Stat(filename); e == nil {
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input, err := ioutil.ReadFile(filename)
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if err != nil {
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TermMessage("Error reading bindings.json file: " + err.Error())
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return
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}
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err = json.Unmarshal(input, &parsed)
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if err != nil {
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TermMessage("Error reading bindings.json:", err.Error())
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}
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}
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parseBindings(defaults)
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parseBindings(parsed)
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}
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func parseBindings(userBindings map[string]string) {
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for k, v := range userBindings {
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BindKey(k, v)
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}
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}
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// findKey will find binding Key 'b' using string 'k'
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func findKey(k string) (b Key, ok bool) {
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modifiers := tcell.ModNone
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// First, we'll strip off all the modifiers in the name and add them to the
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// ModMask
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modSearch:
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for {
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switch {
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case strings.HasPrefix(k, "-"):
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// We optionally support dashes between modifiers
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k = k[1:]
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case strings.HasPrefix(k, "Ctrl"):
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k = k[4:]
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modifiers |= tcell.ModCtrl
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case strings.HasPrefix(k, "Alt"):
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k = k[3:]
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modifiers |= tcell.ModAlt
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case strings.HasPrefix(k, "Shift"):
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k = k[5:]
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modifiers |= tcell.ModShift
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default:
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break modSearch
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}
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}
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// Control is handled specially, since some character codes in bindingKeys
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// are different when Control is depressed. We should check for Control keys
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// first.
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if modifiers&tcell.ModCtrl != 0 {
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// see if the key is in bindingKeys with the Ctrl prefix.
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if code, ok := bindingKeys["Ctrl"+k]; ok {
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// It is, we're done.
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return Key{
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keyCode: code,
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modifiers: modifiers,
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r: 0,
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}, true
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}
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}
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// See if we can find the key in bindingKeys
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if code, ok := bindingKeys[k]; ok {
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return Key{
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keyCode: code,
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modifiers: modifiers,
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r: 0,
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}, true
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}
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// If we were given one character, then we've got a rune.
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if len(k) == 1 {
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return Key{
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keyCode: tcell.KeyRune,
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modifiers: modifiers,
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r: rune(k[0]),
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}, true
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}
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// We don't know what happened.
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return Key{}, false
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}
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// findAction will find 'action' using string 'v'
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func findAction(v string) (action func(*View) bool) {
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action, ok := bindingActions[v]
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if !ok {
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// If the user seems to be binding a function that doesn't exist
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// We hope that it's a lua function that exists and bind it to that
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action = LuaFunctionBinding(v)
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}
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return action
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}
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// BindKey takes a key and an action and binds the two together
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func BindKey(k, v string) {
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key, ok := findKey(k)
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if !ok {
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return
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}
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if v == "ToggleHelp" {
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helpBinding = k
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}
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actionNames := strings.Split(v, ",")
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actions := make([]func(*View) bool, 0, len(actionNames))
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for _, actionName := range actionNames {
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actions = append(actions, findAction(actionName))
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}
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bindings[key] = actions
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}
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// DefaultBindings returns a map containing micro's default keybindings
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func DefaultBindings() map[string]string {
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return map[string]string{
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"Up": "CursorUp",
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"Down": "CursorDown",
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"Right": "CursorRight",
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"Left": "CursorLeft",
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"ShiftUp": "SelectUp",
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"ShiftDown": "SelectDown",
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"ShiftLeft": "SelectLeft",
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"ShiftRight": "SelectRight",
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"AltLeft": "WordLeft",
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"AltRight": "WordRight",
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"AltShiftRight": "SelectWordRight",
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"AltShiftLeft": "SelectWordLeft",
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"CtrlLeft": "StartOfLine",
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"CtrlRight": "EndOfLine",
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"CtrlShiftLeft": "SelectToStartOfLine",
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"CtrlShiftRight": "SelectToEndOfLine",
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"CtrlUp": "CursorStart",
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"CtrlDown": "CursorEnd",
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"CtrlShiftUp": "SelectToStart",
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"CtrlShiftDown": "SelectToEnd",
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"Enter": "InsertNewline",
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"Space": "InsertSpace",
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"Backspace": "Backspace",
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"Backspace2": "Backspace",
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"Alt-Backspace": "DeleteWordLeft",
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"Alt-Backspace2": "DeleteWordLeft",
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"Tab": "IndentSelection,InsertTab",
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"Backtab": "OutdentSelection",
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"CtrlO": "OpenFile",
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"CtrlS": "Save",
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"CtrlF": "Find",
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"CtrlN": "FindNext",
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"CtrlP": "FindPrevious",
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"CtrlZ": "Undo",
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"CtrlY": "Redo",
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"CtrlC": "Copy",
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"CtrlX": "Cut",
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"CtrlK": "CutLine",
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"CtrlD": "DuplicateLine",
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"CtrlV": "Paste",
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"CtrlA": "SelectAll",
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"CtrlT": "AddTab",
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"CtrlRightSq": "PreviousTab",
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"CtrlBackslash": "NextTab",
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"Home": "StartOfLine",
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"End": "EndOfLine",
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"PageUp": "CursorPageUp",
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"PageDown": "CursorPageDown",
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"CtrlG": "ToggleHelp",
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"CtrlR": "ToggleRuler",
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"CtrlL": "JumpLine",
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"Delete": "Delete",
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"Esc": "ClearStatus",
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"CtrlB": "ShellMode",
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"CtrlQ": "Quit",
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"CtrlE": "CommandMode",
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"CtrlW": "NextSplit",
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// Emacs-style keybindings
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"Alt-f": "WordRight",
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"Alt-b": "WordLeft",
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"Alt-a": "StartOfLine",
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"Alt-e": "EndOfLine",
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"Alt-p": "CursorUp",
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"Alt-n": "CursorDown",
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}
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}
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