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vim.js
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/**
* Supported keybindings:
*
* Motion:
* h, j, k, l
* gj, gk
* e, E, w, W, b, B, ge, gE
* f<character>, F<character>, t<character>, T<character>
* $, ^, 0, -, +, _
* gg, G
* %
* '<character>, `<character>
*
* Operator:
* d, y, c
* dd, yy, cc
* g~, g~g~
* >, <, >>, <<
*
* Operator-Motion:
* x, X, D, Y, C, ~
*
* Action:
* a, i, s, A, I, S, o, O
* zz, z., z<CR>, zt, zb, z-
* J
* u, Ctrl-r
* m<character>
* r<character>
*
* Modes:
* ESC - leave insert mode, visual mode, and clear input state.
* Ctrl-[, Ctrl-c - same as ESC.
*
* Registers: unamed, -, a-z, A-Z, 0-9
* (Does not respect the special case for number registers when delete
* operator is made with these commands: %, (, ), , /, ?, n, N, {, } )
* TODO: Implement the remaining registers.
* Marks: a-z, A-Z, and 0-9
* TODO: Implement the remaining special marks. They have more complex
* behavior.
*
* Events:
* 'vim-mode-change' - raised on the editor anytime the current mode changes,
* Event object: {mode: "visual", subMode: "linewise"}
*
* Code structure:
* 1. Default keymap
* 2. Variable declarations and short basic helpers
* 3. Instance (External API) implementation
* 4. Internal state tracking objects (input state, counter) implementation
* and instanstiation
* 5. Key handler (the main command dispatcher) implementation
* 6. Motion, operator, and action implementations
* 7. Helper functions for the key handler, motions, operators, and actions
* 8. Set up Vim to work as a keymap for CodeMirror.
*/
(function() {
'use strict';
var defaultKeymap = [
// Key to key mapping. This goes first to make it possible to override
// existing mappings.
{ keys: ['<Left>'], type: 'keyToKey', toKeys: ['h'] },
{ keys: ['<Right>'], type: 'keyToKey', toKeys: ['l'] },
{ keys: ['<Up>'], type: 'keyToKey', toKeys: ['k'] },
{ keys: ['<Down>'], type: 'keyToKey', toKeys: ['j'] },
{ keys: ['<Space>'], type: 'keyToKey', toKeys: ['l'] },
{ keys: ['<BS>'], type: 'keyToKey', toKeys: ['h'] },
{ keys: ['<C-Space>'], type: 'keyToKey', toKeys: ['W'] },
{ keys: ['<C-BS>'], type: 'keyToKey', toKeys: ['B'] },
{ keys: ['<S-Space>'], type: 'keyToKey', toKeys: ['w'] },
{ keys: ['<S-BS>'], type: 'keyToKey', toKeys: ['b'] },
{ keys: ['<C-n>'], type: 'keyToKey', toKeys: ['j'] },
{ keys: ['<C-p>'], type: 'keyToKey', toKeys: ['k'] },
{ keys: ['C-['], type: 'keyToKey', toKeys: ['<Esc>'] },
{ keys: ['<C-c>'], type: 'keyToKey', toKeys: ['<Esc>'] },
{ keys: ['s'], type: 'keyToKey', toKeys: ['c', 'l'], context: 'normal' },
{ keys: ['s'], type: 'keyToKey', toKeys: ['x', 'i'], context: 'visual'},
{ keys: ['S'], type: 'keyToKey', toKeys: ['c', 'c'], context: 'normal' },
{ keys: ['S'], type: 'keyToKey', toKeys: ['d', 'c', 'c'], context: 'visual' },
{ keys: ['<Home>'], type: 'keyToKey', toKeys: ['0'] },
{ keys: ['<End>'], type: 'keyToKey', toKeys: ['$'] },
{ keys: ['<PageUp>'], type: 'keyToKey', toKeys: ['<C-b>'] },
{ keys: ['<PageDown>'], type: 'keyToKey', toKeys: ['<C-f>'] },
// Motions
{ keys: ['H'], type: 'motion',
motion: 'moveToTopLine',
motionArgs: { linewise: true, toJumplist: true }},
{ keys: ['M'], type: 'motion',
motion: 'moveToMiddleLine',
motionArgs: { linewise: true, toJumplist: true }},
{ keys: ['L'], type: 'motion',
motion: 'moveToBottomLine',
motionArgs: { linewise: true, toJumplist: true }},
{ keys: ['h'], type: 'motion',
motion: 'moveByCharacters',
motionArgs: { forward: false }},
{ keys: ['l'], type: 'motion',
motion: 'moveByCharacters',
motionArgs: { forward: true }},
{ keys: ['j'], type: 'motion',
motion: 'moveByLines',
motionArgs: { forward: true, linewise: true }},
{ keys: ['k'], type: 'motion',
motion: 'moveByLines',
motionArgs: { forward: false, linewise: true }},
{ keys: ['g','j'], type: 'motion',
motion: 'moveByDisplayLines',
motionArgs: { forward: true }},
{ keys: ['g','k'], type: 'motion',
motion: 'moveByDisplayLines',
motionArgs: { forward: false }},
{ keys: ['w'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: true, wordEnd: false }},
{ keys: ['W'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: true, wordEnd: false, bigWord: true }},
{ keys: ['e'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: true, wordEnd: true, inclusive: true }},
{ keys: ['E'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: true, wordEnd: true, bigWord: true,
inclusive: true }},
{ keys: ['b'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: false, wordEnd: false }},
{ keys: ['B'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: false, wordEnd: false, bigWord: true }},
{ keys: ['g', 'e'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: false, wordEnd: true, inclusive: true }},
{ keys: ['g', 'E'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: false, wordEnd: true, bigWord: true,
inclusive: true }},
{ keys: ['{'], type: 'motion', motion: 'moveByParagraph',
motionArgs: { forward: false, toJumplist: true }},
{ keys: ['}'], type: 'motion', motion: 'moveByParagraph',
motionArgs: { forward: true, toJumplist: true }},
{ keys: ['<C-f>'], type: 'motion',
motion: 'moveByPage', motionArgs: { forward: true }},
{ keys: ['<C-b>'], type: 'motion',
motion: 'moveByPage', motionArgs: { forward: false }},
{ keys: ['<C-d>'], type: 'motion',
motion: 'moveByScroll',
motionArgs: { forward: true, explicitRepeat: true }},
{ keys: ['<C-u>'], type: 'motion',
motion: 'moveByScroll',
motionArgs: { forward: false, explicitRepeat: true }},
{ keys: ['g', 'g'], type: 'motion',
motion: 'moveToLineOrEdgeOfDocument',
motionArgs: { forward: false, explicitRepeat: true, linewise: true, toJumplist: true }},
{ keys: ['G'], type: 'motion',
motion: 'moveToLineOrEdgeOfDocument',
motionArgs: { forward: true, explicitRepeat: true, linewise: true, toJumplist: true }},
{ keys: ['0'], type: 'motion', motion: 'moveToStartOfLine' },
{ keys: ['^'], type: 'motion',
motion: 'moveToFirstNonWhiteSpaceCharacter' },
{ keys: ['+'], type: 'motion',
motion: 'moveByLines',
motionArgs: { forward: true, toFirstChar:true }},
{ keys: ['-'], type: 'motion',
motion: 'moveByLines',
motionArgs: { forward: false, toFirstChar:true }},
{ keys: ['_'], type: 'motion',
motion: 'moveByLines',
motionArgs: { forward: true, toFirstChar:true, repeatOffset:-1 }},
{ keys: ['$'], type: 'motion',
motion: 'moveToEol',
motionArgs: { inclusive: true }},
{ keys: ['%'], type: 'motion',
motion: 'moveToMatchedSymbol',
motionArgs: { inclusive: true, toJumplist: true }},
{ keys: ['f', 'character'], type: 'motion',
motion: 'moveToCharacter',
motionArgs: { forward: true , inclusive: true }},
{ keys: ['F', 'character'], type: 'motion',
motion: 'moveToCharacter',
motionArgs: { forward: false }},
{ keys: ['t', 'character'], type: 'motion',
motion: 'moveTillCharacter',
motionArgs: { forward: true, inclusive: true }},
{ keys: ['T', 'character'], type: 'motion',
motion: 'moveTillCharacter',
motionArgs: { forward: false }},
{ keys: [';'], type: 'motion', motion: 'repeatLastCharacterSearch',
motionArgs: { forward: true }},
{ keys: [','], type: 'motion', motion: 'repeatLastCharacterSearch',
motionArgs: { forward: false }},
{ keys: ['\'', 'character'], type: 'motion', motion: 'goToMark',
motionArgs: {toJumplist: true}},
{ keys: ['`', 'character'], type: 'motion', motion: 'goToMark',
motionArgs: {toJumplist: true}},
{ keys: [']', '`'], type: 'motion', motion: 'jumpToMark', motionArgs: { forward: true } },
{ keys: ['[', '`'], type: 'motion', motion: 'jumpToMark', motionArgs: { forward: false } },
{ keys: [']', '\''], type: 'motion', motion: 'jumpToMark', motionArgs: { forward: true, linewise: true } },
{ keys: ['[', '\''], type: 'motion', motion: 'jumpToMark', motionArgs: { forward: false, linewise: true } },
{ keys: [']', 'character'], type: 'motion',
motion: 'moveToSymbol',
motionArgs: { forward: true, toJumplist: true}},
{ keys: ['[', 'character'], type: 'motion',
motion: 'moveToSymbol',
motionArgs: { forward: false, toJumplist: true}},
{ keys: ['|'], type: 'motion',
motion: 'moveToColumn',
motionArgs: { }},
// Operators
{ keys: ['d'], type: 'operator', operator: 'delete' },
{ keys: ['y'], type: 'operator', operator: 'yank' },
{ keys: ['c'], type: 'operator', operator: 'change' },
{ keys: ['>'], type: 'operator', operator: 'indent',
operatorArgs: { indentRight: true }},
{ keys: ['<'], type: 'operator', operator: 'indent',
operatorArgs: { indentRight: false }},
{ keys: ['g', '~'], type: 'operator', operator: 'swapcase' },
{ keys: ['n'], type: 'motion', motion: 'findNext',
motionArgs: { forward: true, toJumplist: true }},
{ keys: ['N'], type: 'motion', motion: 'findNext',
motionArgs: { forward: false, toJumplist: true }},
// Operator-Motion dual commands
{ keys: ['x'], type: 'operatorMotion', operator: 'delete',
motion: 'moveByCharacters', motionArgs: { forward: true },
operatorMotionArgs: { visualLine: false }},
{ keys: ['X'], type: 'operatorMotion', operator: 'delete',
motion: 'moveByCharacters', motionArgs: { forward: false },
operatorMotionArgs: { visualLine: true }},
{ keys: ['D'], type: 'operatorMotion', operator: 'delete',
motion: 'moveToEol', motionArgs: { inclusive: true },
operatorMotionArgs: { visualLine: true }},
{ keys: ['Y'], type: 'operatorMotion', operator: 'yank',
motion: 'moveToEol', motionArgs: { inclusive: true },
operatorMotionArgs: { visualLine: true }},
{ keys: ['C'], type: 'operatorMotion',
operator: 'change',
motion: 'moveToEol', motionArgs: { inclusive: true },
operatorMotionArgs: { visualLine: true }},
{ keys: ['~'], type: 'operatorMotion',
operator: 'swapcase', operatorArgs: { shouldMoveCursor: true },
motion: 'moveByCharacters', motionArgs: { forward: true }},
// Actions
{ keys: ['<C-i>'], type: 'action', action: 'jumpListWalk',
actionArgs: { forward: true }},
{ keys: ['<C-o>'], type: 'action', action: 'jumpListWalk',
actionArgs: { forward: false }},
{ keys: ['a'], type: 'action', action: 'enterInsertMode', isEdit: true,
actionArgs: { insertAt: 'charAfter' }},
{ keys: ['A'], type: 'action', action: 'enterInsertMode', isEdit: true,
actionArgs: { insertAt: 'eol' }},
{ keys: ['i'], type: 'action', action: 'enterInsertMode', isEdit: true,
actionArgs: { insertAt: 'inplace' }},
{ keys: ['I'], type: 'action', action: 'enterInsertMode', isEdit: true,
actionArgs: { insertAt: 'firstNonBlank' }},
{ keys: ['o'], type: 'action', action: 'newLineAndEnterInsertMode',
isEdit: true, interlaceInsertRepeat: true,
actionArgs: { after: true }},
{ keys: ['O'], type: 'action', action: 'newLineAndEnterInsertMode',
isEdit: true, interlaceInsertRepeat: true,
actionArgs: { after: false }},
{ keys: ['v'], type: 'action', action: 'toggleVisualMode' },
{ keys: ['V'], type: 'action', action: 'toggleVisualMode',
actionArgs: { linewise: true }},
{ keys: ['J'], type: 'action', action: 'joinLines', isEdit: true },
{ keys: ['p'], type: 'action', action: 'paste', isEdit: true,
actionArgs: { after: true, isEdit: true }},
{ keys: ['P'], type: 'action', action: 'paste', isEdit: true,
actionArgs: { after: false, isEdit: true }},
{ keys: ['r', 'character'], type: 'action', action: 'replace', isEdit: true },
{ keys: ['@', 'character'], type: 'action', action: 'replayMacro' },
{ keys: ['q', 'character'], type: 'action', action: 'enterMacroRecordMode' },
// Handle Replace-mode as a special case of insert mode.
{ keys: ['R'], type: 'action', action: 'enterInsertMode', isEdit: true,
actionArgs: { replace: true }},
{ keys: ['u'], type: 'action', action: 'undo' },
{ keys: ['<C-r>'], type: 'action', action: 'redo' },
{ keys: ['m', 'character'], type: 'action', action: 'setMark' },
{ keys: ['"', 'character'], type: 'action', action: 'setRegister' },
{ keys: ['z', 'z'], type: 'action', action: 'scrollToCursor',
actionArgs: { position: 'center' }},
{ keys: ['z', '.'], type: 'action', action: 'scrollToCursor',
actionArgs: { position: 'center' },
motion: 'moveToFirstNonWhiteSpaceCharacter' },
{ keys: ['z', 't'], type: 'action', action: 'scrollToCursor',
actionArgs: { position: 'top' }},
{ keys: ['z', '<CR>'], type: 'action', action: 'scrollToCursor',
actionArgs: { position: 'top' },
motion: 'moveToFirstNonWhiteSpaceCharacter' },
{ keys: ['z', '-'], type: 'action', action: 'scrollToCursor',
actionArgs: { position: 'bottom' }},
{ keys: ['z', 'b'], type: 'action', action: 'scrollToCursor',
actionArgs: { position: 'bottom' },
motion: 'moveToFirstNonWhiteSpaceCharacter' },
{ keys: ['.'], type: 'action', action: 'repeatLastEdit' },
{ keys: ['<C-a>'], type: 'action', action: 'incrementNumberToken',
isEdit: true,
actionArgs: {increase: true, backtrack: false}},
{ keys: ['<C-x>'], type: 'action', action: 'incrementNumberToken',
isEdit: true,
actionArgs: {increase: false, backtrack: false}},
// Text object motions
{ keys: ['a', 'character'], type: 'motion',
motion: 'textObjectManipulation' },
{ keys: ['i', 'character'], type: 'motion',
motion: 'textObjectManipulation',
motionArgs: { textObjectInner: true }},
// Search
{ keys: ['/'], type: 'search',
searchArgs: { forward: true, querySrc: 'prompt', toJumplist: true }},
{ keys: ['?'], type: 'search',
searchArgs: { forward: false, querySrc: 'prompt', toJumplist: true }},
{ keys: ['*'], type: 'search',
searchArgs: { forward: true, querySrc: 'wordUnderCursor', toJumplist: true }},
{ keys: ['#'], type: 'search',
searchArgs: { forward: false, querySrc: 'wordUnderCursor', toJumplist: true }},
// Ex command
{ keys: [':'], type: 'ex' }
];
var Vim = function() {
CodeMirror.defineOption('vimMode', false, function(cm, val) {
if (val) {
cm.setOption('keyMap', 'vim');
CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
cm.on('beforeSelectionChange', beforeSelectionChange);
maybeInitVimState(cm);
} else if (cm.state.vim) {
cm.setOption('keyMap', 'default');
cm.off('beforeSelectionChange', beforeSelectionChange);
cm.state.vim = null;
}
});
function beforeSelectionChange(cm, cur) {
var vim = cm.state.vim;
if (vim.insertMode || vim.exMode) return;
var head = cur.head;
if (head.ch && head.ch == cm.doc.getLine(head.line).length) {
head.ch--;
}
}
var numberRegex = /[\d]/;
var wordRegexp = [(/\w/), (/[^\w\s]/)], bigWordRegexp = [(/\S/)];
function makeKeyRange(start, size) {
var keys = [];
for (var i = start; i < start + size; i++) {
keys.push(String.fromCharCode(i));
}
return keys;
}
var upperCaseAlphabet = makeKeyRange(65, 26);
var lowerCaseAlphabet = makeKeyRange(97, 26);
var numbers = makeKeyRange(48, 10);
var specialSymbols = '~`!@#$%^&*()_-+=[{}]\\|/?.,<>:;"\''.split('');
var specialKeys = ['Left', 'Right', 'Up', 'Down', 'Space', 'Backspace',
'Esc', 'Home', 'End', 'PageUp', 'PageDown', 'Enter'];
var validMarks = [].concat(upperCaseAlphabet, lowerCaseAlphabet, numbers, ['<', '>']);
var validRegisters = [].concat(upperCaseAlphabet, lowerCaseAlphabet, numbers, ['-', '"']);
function isLine(cm, line) {
return line >= cm.firstLine() && line <= cm.lastLine();
}
function isLowerCase(k) {
return (/^[a-z]$/).test(k);
}
function isMatchableSymbol(k) {
return '()[]{}'.indexOf(k) != -1;
}
function isNumber(k) {
return numberRegex.test(k);
}
function isUpperCase(k) {
return (/^[A-Z]$/).test(k);
}
function isWhiteSpaceString(k) {
return (/^\s*$/).test(k);
}
function inArray(val, arr) {
for (var i = 0; i < arr.length; i++) {
if (arr[i] == val) {
return true;
}
}
return false;
}
var createCircularJumpList = function() {
var size = 100;
var pointer = -1;
var head = 0;
var tail = 0;
var buffer = new Array(size);
function add(cm, oldCur, newCur) {
var current = pointer % size;
var curMark = buffer[current];
function useNextSlot(cursor) {
var next = ++pointer % size;
var trashMark = buffer[next];
if (trashMark) {
trashMark.clear();
}
buffer[next] = cm.setBookmark(cursor);
}
if (curMark) {
var markPos = curMark.find();
// avoid recording redundant cursor position
if (markPos && !cursorEqual(markPos, oldCur)) {
useNextSlot(oldCur);
}
} else {
useNextSlot(oldCur);
}
useNextSlot(newCur);
head = pointer;
tail = pointer - size + 1;
if (tail < 0) {
tail = 0;
}
}
function move(cm, offset) {
pointer += offset;
if (pointer > head) {
pointer = head;
} else if (pointer < tail) {
pointer = tail;
}
var mark = buffer[(size + pointer) % size];
// skip marks that are temporarily removed from text buffer
if (mark && !mark.find()) {
var inc = offset > 0 ? 1 : -1;
var newCur;
var oldCur = cm.getCursor();
do {
pointer += inc;
mark = buffer[(size + pointer) % size];
// skip marks that are the same as current position
if (mark &&
(newCur = mark.find()) &&
!cursorEqual(oldCur, newCur)) {
break;
}
} while (pointer < head && pointer > tail);
}
return mark;
}
return {
cachedCursor: undefined, //used for # and * jumps
add: add,
move: move
};
};
var createMacroState = function() {
return {
macroKeyBuffer: [],
latestRegister: undefined,
inReplay: false,
lastInsertModeChanges: {
changes: [], // Change list
expectCursorActivityForChange: false // Set to true on change, false on cursorActivity.
},
enteredMacroMode: undefined,
isMacroPlaying: false,
toggle: function(cm, registerName) {
if (this.enteredMacroMode) { //onExit
this.enteredMacroMode(); // close dialog
this.enteredMacroMode = undefined;
} else { //onEnter
this.latestRegister = registerName;
this.enteredMacroMode = cm.openDialog(
'(recording)['+registerName+']', null, {bottom:true});
}
}
};
};
function maybeInitVimState(cm) {
if (!cm.state.vim) {
// Store instance state in the CodeMirror object.
cm.state.vim = {
inputState: new InputState(),
// Vim's input state that triggered the last edit, used to repeat
// motions and operators with '.'.
lastEditInputState: undefined,
// Vim's action command before the last edit, used to repeat actions
// with '.' and insert mode repeat.
lastEditActionCommand: undefined,
// When using jk for navigation, if you move from a longer line to a
// shorter line, the cursor may clip to the end of the shorter line.
// If j is pressed again and cursor goes to the next line, the
// cursor should go back to its horizontal position on the longer
// line if it can. This is to keep track of the horizontal position.
lastHPos: -1,
// Doing the same with screen-position for gj/gk
lastHSPos: -1,
// The last motion command run. Cleared if a non-motion command gets
// executed in between.
lastMotion: null,
marks: {},
insertMode: false,
// Repeat count for changes made in insert mode, triggered by key
// sequences like 3,i. Only exists when insertMode is true.
insertModeRepeat: undefined,
visualMode: false,
// If we are in visual line mode. No effect if visualMode is false.
visualLine: false
};
}
return cm.state.vim;
}
var vimGlobalState;
function resetVimGlobalState() {
vimGlobalState = {
// The current search query.
searchQuery: null,
// Whether we are searching backwards.
searchIsReversed: false,
jumpList: createCircularJumpList(),
macroModeState: createMacroState(),
// Recording latest f, t, F or T motion command.
lastChararacterSearch: {increment:0, forward:true, selectedCharacter:''},
registerController: new RegisterController({})
};
}
var vimApi= {
buildKeyMap: function() {
// TODO: Convert keymap into dictionary format for fast lookup.
},
// Testing hook, though it might be useful to expose the register
// controller anyways.
getRegisterController: function() {
return vimGlobalState.registerController;
},
// Testing hook.
resetVimGlobalState_: resetVimGlobalState,
// Testing hook.
getVimGlobalState_: function() {
return vimGlobalState;
},
// Testing hook.
maybeInitVimState_: maybeInitVimState,
InsertModeKey: InsertModeKey,
map: function(lhs, rhs) {
// Add user defined key bindings.
exCommandDispatcher.map(lhs, rhs);
},
defineEx: function(name, prefix, func){
if (name.indexOf(prefix) !== 0) {
throw new Error('(Vim.defineEx) "'+prefix+'" is not a prefix of "'+name+'", command not registered');
}
exCommands[name]=func;
exCommandDispatcher.commandMap_[prefix]={name:name, shortName:prefix, type:'api'};
},
// This is the outermost function called by CodeMirror, after keys have
// been mapped to their Vim equivalents.
handleKey: function(cm, key) {
var command;
var vim = maybeInitVimState(cm);
var macroModeState = vimGlobalState.macroModeState;
if (macroModeState.enteredMacroMode) {
if (key == 'q') {
actions.exitMacroRecordMode();
vim.inputState = new InputState();
return;
}
}
if (key == '<Esc>') {
// Clear input state and get back to normal mode.
vim.inputState = new InputState();
if (vim.visualMode) {
exitVisualMode(cm);
}
return;
}
// Enter visual mode when the mouse selects text.
if (!vim.visualMode &&
!cursorEqual(cm.getCursor('head'), cm.getCursor('anchor'))) {
vim.visualMode = true;
vim.visualLine = false;
CodeMirror.signal(cm, "vim-mode-change", {mode: "visual"});
cm.on('mousedown', exitVisualMode);
}
if (key != '0' || (key == '0' && vim.inputState.getRepeat() === 0)) {
// Have to special case 0 since it's both a motion and a number.
command = commandDispatcher.matchCommand(key, defaultKeymap, vim);
}
if (!command) {
if (isNumber(key)) {
// Increment count unless count is 0 and key is 0.
vim.inputState.pushRepeatDigit(key);
}
return;
}
if (command.type == 'keyToKey') {
// TODO: prevent infinite recursion.
for (var i = 0; i < command.toKeys.length; i++) {
this.handleKey(cm, command.toKeys[i]);
}
} else {
if (macroModeState.enteredMacroMode) {
logKey(macroModeState, key);
}
commandDispatcher.processCommand(cm, vim, command);
}
},
handleEx: function(cm, input) {
exCommandDispatcher.processCommand(cm, input);
}
};
// Represents the current input state.
function InputState() {
this.prefixRepeat = [];
this.motionRepeat = [];
this.operator = null;
this.operatorArgs = null;
this.motion = null;
this.motionArgs = null;
this.keyBuffer = []; // For matching multi-key commands.
this.registerName = null; // Defaults to the unamed register.
}
InputState.prototype.pushRepeatDigit = function(n) {
if (!this.operator) {
this.prefixRepeat = this.prefixRepeat.concat(n);
} else {
this.motionRepeat = this.motionRepeat.concat(n);
}
};
InputState.prototype.getRepeat = function() {
var repeat = 0;
if (this.prefixRepeat.length > 0 || this.motionRepeat.length > 0) {
repeat = 1;
if (this.prefixRepeat.length > 0) {
repeat *= parseInt(this.prefixRepeat.join(''), 10);
}
if (this.motionRepeat.length > 0) {
repeat *= parseInt(this.motionRepeat.join(''), 10);
}
}
return repeat;
};
/*
* Register stores information about copy and paste registers. Besides
* text, a register must store whether it is linewise (i.e., when it is
* pasted, should it insert itself into a new line, or should the text be
* inserted at the cursor position.)
*/
function Register(text, linewise) {
this.clear();
if (text) {
this.set(text, linewise);
}
}
Register.prototype = {
set: function(text, linewise) {
this.text = text;
this.linewise = !!linewise;
},
append: function(text, linewise) {
// if this register has ever been set to linewise, use linewise.
if (linewise || this.linewise) {
this.text += '\n' + text;
this.linewise = true;
} else {
this.text += text;
}
},
clear: function() {
this.text = '';
this.linewise = false;
},
toString: function() { return this.text; }
};
/*
* vim registers allow you to keep many independent copy and paste buffers.
* See http://usevim.com/2012/04/13/registers/ for an introduction.
*
* RegisterController keeps the state of all the registers. An initial
* state may be passed in. The unnamed register '"' will always be
* overridden.
*/
function RegisterController(registers) {
this.registers = registers;
this.unamedRegister = registers['"'] = new Register();
}
RegisterController.prototype = {
pushText: function(registerName, operator, text, linewise) {
if (linewise && text.charAt(0) == '\n') {
text = text.slice(1) + '\n';
}
if(linewise && text.charAt(text.length - 1) !== '\n'){
text += '\n';
}
// Lowercase and uppercase registers refer to the same register.
// Uppercase just means append.
var register = this.isValidRegister(registerName) ?
this.getRegister(registerName) : null;
// if no register/an invalid register was specified, things go to the
// default registers
if (!register) {
switch (operator) {
case 'yank':
// The 0 register contains the text from the most recent yank.
this.registers['0'] = new Register(text, linewise);
break;
case 'delete':
case 'change':
if (text.indexOf('\n') == -1) {
// Delete less than 1 line. Update the small delete register.
this.registers['-'] = new Register(text, linewise);
} else {
// Shift down the contents of the numbered registers and put the
// deleted text into register 1.
this.shiftNumericRegisters_();
this.registers['1'] = new Register(text, linewise);
}
break;
}
// Make sure the unnamed register is set to what just happened
this.unamedRegister.set(text, linewise);
return;
}
// If we've gotten to this point, we've actually specified a register
var append = isUpperCase(registerName);
if (append) {
register.append(text, linewise);
// The unamed register always has the same value as the last used
// register.
this.unamedRegister.append(text, linewise);
} else {
register.set(text, linewise);
this.unamedRegister.set(text, linewise);
}
},
setRegisterText: function(name, text, linewise) {
this.getRegister(name).set(text, linewise);
},
// Gets the register named @name. If one of @name doesn't already exist,
// create it. If @name is invalid, return the unamedRegister.
getRegister: function(name) {
if (!this.isValidRegister(name)) {
return this.unamedRegister;
}
name = name.toLowerCase();
if (!this.registers[name]) {
this.registers[name] = new Register();
}
return this.registers[name];
},
isValidRegister: function(name) {
return name && inArray(name, validRegisters);
},
shiftNumericRegisters_: function() {
for (var i = 9; i >= 2; i--) {
this.registers[i] = this.getRegister('' + (i - 1));
}
}
};
var commandDispatcher = {
matchCommand: function(key, keyMap, vim) {
var inputState = vim.inputState;
var keys = inputState.keyBuffer.concat(key);
var matchedCommands = [];
var selectedCharacter;
for (var i = 0; i < keyMap.length; i++) {
var command = keyMap[i];
if (matchKeysPartial(keys, command.keys)) {
if (inputState.operator && command.type == 'action') {
// Ignore matched action commands after an operator. Operators
// only operate on motions. This check is really for text
// objects since aW, a[ etcs conflicts with a.
continue;
}
// Match commands that take <character> as an argument.
if (command.keys[keys.length - 1] == 'character') {
selectedCharacter = keys[keys.length - 1];
if(selectedCharacter.length>1){
switch(selectedCharacter){
case '<CR>':
selectedCharacter='\n';
break;
case '<Space>':
selectedCharacter=' ';
break;
default:
continue;
}
}
}
// Add the command to the list of matched commands. Choose the best
// command later.
matchedCommands.push(command);
}
}
// Returns the command if it is a full match, or null if not.
function getFullyMatchedCommandOrNull(command) {
if (keys.length < command.keys.length) {
// Matches part of a multi-key command. Buffer and wait for next
// stroke.
inputState.keyBuffer.push(key);
return null;
} else {
if (command.keys[keys.length - 1] == 'character') {
inputState.selectedCharacter = selectedCharacter;
}
// Clear the buffer since a full match was found.
inputState.keyBuffer = [];
return command;
}
}
if (!matchedCommands.length) {
// Clear the buffer since there were no matches.
inputState.keyBuffer = [];
return null;
} else if (matchedCommands.length == 1) {
return getFullyMatchedCommandOrNull(matchedCommands[0]);
} else {
// Find the best match in the list of matchedCommands.
var context = vim.visualMode ? 'visual' : 'normal';
var bestMatch = matchedCommands[0]; // Default to first in the list.
for (var i = 0; i < matchedCommands.length; i++) {
if (matchedCommands[i].context == context) {
bestMatch = matchedCommands[i];
break;
}
}
return getFullyMatchedCommandOrNull(bestMatch);
}
},
processCommand: function(cm, vim, command) {
vim.inputState.repeatOverride = command.repeatOverride;
switch (command.type) {
case 'motion':
this.processMotion(cm, vim, command);
break;
case 'operator':
this.processOperator(cm, vim, command);
break;
case 'operatorMotion':
this.processOperatorMotion(cm, vim, command);
break;
case 'action':
this.processAction(cm, vim, command);
break;
case 'search':
this.processSearch(cm, vim, command);
break;
case 'ex':
case 'keyToEx':
this.processEx(cm, vim, command);
break;
default:
break;
}
},
processMotion: function(cm, vim, command) {
vim.inputState.motion = command.motion;
vim.inputState.motionArgs = copyArgs(command.motionArgs);
this.evalInput(cm, vim);
},
processOperator: function(cm, vim, command) {
var inputState = vim.inputState;
if (inputState.operator) {
if (inputState.operator == command.operator) {
// Typing an operator twice like 'dd' makes the operator operate
// linewise
inputState.motion = 'expandToLine';
inputState.motionArgs = { linewise: true };
this.evalInput(cm, vim);
return;
} else {
// 2 different operators in a row doesn't make sense.
vim.inputState = new InputState();
}
}
inputState.operator = command.operator;
inputState.operatorArgs = copyArgs(command.operatorArgs);
if (vim.visualMode) {
// Operating on a selection in visual mode. We don't need a motion.
this.evalInput(cm, vim);
}
},
processOperatorMotion: function(cm, vim, command) {
var visualMode = vim.visualMode;
var operatorMotionArgs = copyArgs(command.operatorMotionArgs);
if (operatorMotionArgs) {
// Operator motions may have special behavior in visual mode.
if (visualMode && operatorMotionArgs.visualLine) {
vim.visualLine = true;
}
}
this.processOperator(cm, vim, command);
if (!visualMode) {
this.processMotion(cm, vim, command);
}
},
processAction: function(cm, vim, command) {
var inputState = vim.inputState;
var repeat = inputState.getRepeat();
var repeatIsExplicit = !!repeat;
var actionArgs = copyArgs(command.actionArgs) || {};
if (inputState.selectedCharacter) {
actionArgs.selectedCharacter = inputState.selectedCharacter;
}
// Actions may or may not have motions and operators. Do these first.
if (command.operator) {
this.processOperator(cm, vim, command);
}
if (command.motion) {
this.processMotion(cm, vim, command);
}
if (command.motion || command.operator) {
this.evalInput(cm, vim);
}
actionArgs.repeat = repeat || 1;
actionArgs.repeatIsExplicit = repeatIsExplicit;
actionArgs.registerName = inputState.registerName;
vim.inputState = new InputState();
vim.lastMotion = null;
if (command.isEdit) {
this.recordLastEdit(vim, inputState, command);
}
actions[command.action](cm, actionArgs, vim);
},
processSearch: function(cm, vim, command) {
if (!cm.getSearchCursor) {
// Search depends on SearchCursor.
return;
}
var forward = command.searchArgs.forward;
getSearchState(cm).setReversed(!forward);
var promptPrefix = (forward) ? '/' : '?';
var originalQuery = getSearchState(cm).getQuery();
var originalScrollPos = cm.getScrollInfo();
function handleQuery(query, ignoreCase, smartCase) {
try {
updateSearchQuery(cm, query, ignoreCase, smartCase);
} catch (e) {
showConfirm(cm, 'Invalid regex: ' + query);
return;
}
commandDispatcher.processMotion(cm, vim, {
type: 'motion',
motion: 'findNext',
motionArgs: { forward: true, toJumplist: command.searchArgs.toJumplist }
});
}
function onPromptClose(query) {
cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
handleQuery(query, true /** ignoreCase */, true /** smartCase */);
}
function onPromptKeyUp(_e, query) {
var parsedQuery;
try {
parsedQuery = updateSearchQuery(cm, query,
true /** ignoreCase */, true /** smartCase */);
} catch (e) {
// Swallow bad regexes for incremental search.
}
if (parsedQuery) {
cm.scrollIntoView(findNext(cm, !forward, parsedQuery), 30);
} else {
clearSearchHighlight(cm);
cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
}
}
function onPromptKeyDown(e, _query, close) {
var keyName = CodeMirror.keyName(e);
if (keyName == 'Esc' || keyName == 'Ctrl-C' || keyName == 'Ctrl-[') {
updateSearchQuery(cm, originalQuery);
clearSearchHighlight(cm);
cm.scrollTo(originalScrollPos.left, originalScrollPos.top);
CodeMirror.e_stop(e);
close();
cm.focus();
}
}
switch (command.searchArgs.querySrc) {
case 'prompt':
showPrompt(cm, {
onClose: onPromptClose,
prefix: promptPrefix,
desc: searchPromptDesc,