// CodeMirror, copyright (c) by Marijn Haverbeke and others // Distributed under an MIT license: http://codemirror.net/LICENSE (function(mod) { if (typeof exports == "object" && typeof module == "object") // CommonJS mod(require("../lib/codemirror")); else if (typeof define == "function" && define.amd) // AMD define(["../lib/codemirror"], mod); else // Plain browser env mod(CodeMirror); })(function(CodeMirror) { "use strict"; var Pos = CodeMirror.Pos; function posEq(a, b) { return a.line == b.line && a.ch == b.ch; } // Kill 'ring' var killRing = []; function addToRing(str) { killRing.push(str); if (killRing.length > 50) killRing.shift(); } function growRingTop(str) { if (!killRing.length) return addToRing(str); killRing[killRing.length - 1] += str; } function getFromRing(n) { return killRing[killRing.length - (n ? Math.min(n, 1) : 1)] || ""; } function popFromRing() { if (killRing.length > 1) killRing.pop(); return getFromRing(); } var lastKill = null; function kill(cm, from, to, mayGrow, text) { if (text == null) text = cm.getRange(from, to); if (mayGrow && lastKill && lastKill.cm == cm && posEq(from, lastKill.pos) && cm.isClean(lastKill.gen)) growRingTop(text); else addToRing(text); cm.replaceRange("", from, to, "+delete"); if (mayGrow) lastKill = {cm: cm, pos: from, gen: cm.changeGeneration()}; else lastKill = null; } // Boundaries of various units function byChar(cm, pos, dir) { return cm.findPosH(pos, dir, "char", true); } function byWord(cm, pos, dir) { return cm.findPosH(pos, dir, "word", true); } function byLine(cm, pos, dir) { return cm.findPosV(pos, dir, "line", cm.doc.sel.goalColumn); } function byPage(cm, pos, dir) { return cm.findPosV(pos, dir, "page", cm.doc.sel.goalColumn); } function byParagraph(cm, pos, dir) { var no = pos.line, line = cm.getLine(no); var sawText = /\S/.test(dir < 0 ? line.slice(0, pos.ch) : line.slice(pos.ch)); var fst = cm.firstLine(), lst = cm.lastLine(); for (;;) { no += dir; if (no < fst || no > lst) return cm.clipPos(Pos(no - dir, dir < 0 ? 0 : null)); line = cm.getLine(no); var hasText = /\S/.test(line); if (hasText) sawText = true; else if (sawText) return Pos(no, 0); } } function bySentence(cm, pos, dir) { var line = pos.line, ch = pos.ch; var text = cm.getLine(pos.line), sawWord = false; for (;;) { var next = text.charAt(ch + (dir < 0 ? -1 : 0)); if (!next) { // End/beginning of line reached if (line == (dir < 0 ? cm.firstLine() : cm.lastLine())) return Pos(line, ch); text = cm.getLine(line + dir); if (!/\S/.test(text)) return Pos(line, ch); line += dir; ch = dir < 0 ? text.length : 0; continue; } if (sawWord && /[!?.]/.test(next)) return Pos(line, ch + (dir > 0 ? 1 : 0)); if (!sawWord) sawWord = /\w/.test(next); ch += dir; } } function byExpr(cm, pos, dir) { var wrap; if (cm.findMatchingBracket && (wrap = cm.findMatchingBracket(pos, true)) && wrap.match && (wrap.forward ? 1 : -1) == dir) return dir > 0 ? Pos(wrap.to.line, wrap.to.ch + 1) : wrap.to; for (var first = true;; first = false) { var token = cm.getTokenAt(pos); var after = Pos(pos.line, dir < 0 ? token.start : token.end); if (first && dir > 0 && token.end == pos.ch || !/\w/.test(token.string)) { var newPos = cm.findPosH(after, dir, "char"); if (posEq(after, newPos)) return pos; else pos = newPos; } else { return after; } } } // Prefixes (only crudely supported) function getPrefix(cm, precise) { var digits = cm.state.emacsPrefix; if (!digits) return precise ? null : 1; clearPrefix(cm); return digits == "-" ? -1 : Number(digits); } function repeated(cmd) { var f = typeof cmd == "string" ? function(cm) { cm.execCommand(cmd); } : cmd; return function(cm) { var prefix = getPrefix(cm); f(cm); for (var i = 1; i < prefix; ++i) f(cm); }; } function findEnd(cm, pos, by, dir) { var prefix = getPrefix(cm); if (prefix < 0) { dir = -dir; prefix = -prefix; } for (var i = 0; i < prefix; ++i) { var newPos = by(cm, pos, dir); if (posEq(newPos, pos)) break; pos = newPos; } return pos; } function move(by, dir) { var f = function(cm) { cm.extendSelection(findEnd(cm, cm.getCursor(), by, dir)); }; f.motion = true; return f; } function killTo(cm, by, dir) { var selections = cm.listSelections(), cursor; var i = selections.length; while (i--) { cursor = selections[i].head; kill(cm, cursor, findEnd(cm, cursor, by, dir), true); } } function killRegion(cm) { if (cm.somethingSelected()) { var selections = cm.listSelections(), selection; var i = selections.length; while (i--) { selection = selections[i]; kill(cm, selection.anchor, selection.head); } return true; } } function addPrefix(cm, digit) { if (cm.state.emacsPrefix) { if (digit != "-") cm.state.emacsPrefix += digit; return; } // Not active yet cm.state.emacsPrefix = digit; cm.on("keyHandled", maybeClearPrefix); cm.on("inputRead", maybeDuplicateInput); } var prefixPreservingKeys = {"Alt-G": true, "Ctrl-X": true, "Ctrl-Q": true, "Ctrl-U": true}; function maybeClearPrefix(cm, arg) { if (!cm.state.emacsPrefixMap && !prefixPreservingKeys.hasOwnProperty(arg)) clearPrefix(cm); } function clearPrefix(cm) { cm.state.emacsPrefix = null; cm.off("keyHandled", maybeClearPrefix); cm.off("inputRead", maybeDuplicateInput); } function maybeDuplicateInput(cm, event) { var dup = getPrefix(cm); if (dup > 1 && event.origin == "+input") { var one = event.text.join("\n"), txt = ""; for (var i = 1; i < dup; ++i) txt += one; cm.replaceSelection(txt); } } function addPrefixMap(cm) { cm.state.emacsPrefixMap = true; cm.addKeyMap(prefixMap); cm.on("keyHandled", maybeRemovePrefixMap); cm.on("inputRead", maybeRemovePrefixMap); } function maybeRemovePrefixMap(cm, arg) { if (typeof arg == "string" && (/^\d$/.test(arg) || arg == "Ctrl-U")) return; cm.removeKeyMap(prefixMap); cm.state.emacsPrefixMap = false; cm.off("keyHandled", maybeRemovePrefixMap); cm.off("inputRead", maybeRemovePrefixMap); } // Utilities function setMark(cm) { cm.setCursor(cm.getCursor()); cm.setExtending(!cm.getExtending()); cm.on("change", function() { cm.setExtending(false); }); } function clearMark(cm) { cm.setExtending(false); cm.setCursor(cm.getCursor()); } function getInput(cm, msg, f) { if (cm.openDialog) cm.openDialog(msg + ": <input type=\"text\" style=\"width: 10em\"/>", f, {bottom: true}); else f(prompt(msg, "")); } function operateOnWord(cm, op) { var start = cm.getCursor(), end = cm.findPosH(start, 1, "word"); cm.replaceRange(op(cm.getRange(start, end)), start, end); cm.setCursor(end); } function toEnclosingExpr(cm) { var pos = cm.getCursor(), line = pos.line, ch = pos.ch; var stack = []; while (line >= cm.firstLine()) { var text = cm.getLine(line); for (var i = ch == null ? text.length : ch; i > 0;) { var ch = text.charAt(--i); if (ch == ")") stack.push("("); else if (ch == "]") stack.push("["); else if (ch == "}") stack.push("{"); else if (/[\(\{\[]/.test(ch) && (!stack.length || stack.pop() != ch)) return cm.extendSelection(Pos(line, i)); } --line; ch = null; } } function quit(cm) { cm.execCommand("clearSearch"); clearMark(cm); } // Actual keymap var keyMap = CodeMirror.keyMap.emacs = CodeMirror.normalizeKeyMap({ "Ctrl-W": function(cm) {kill(cm, cm.getCursor("start"), cm.getCursor("end"));}, "Ctrl-K": repeated(function(cm) { var start = cm.getCursor(), end = cm.clipPos(Pos(start.line)); var text = cm.getRange(start, end); if (!/\S/.test(text)) { text += "\n"; end = Pos(start.line + 1, 0); } kill(cm, start, end, true, text); }), "Alt-W": function(cm) { addToRing(cm.getSelection()); clearMark(cm); }, "Ctrl-Y": function(cm) { var start = cm.getCursor(); cm.replaceRange(getFromRing(getPrefix(cm)), start, start, "paste"); cm.setSelection(start, cm.getCursor()); }, "Alt-Y": function(cm) {cm.replaceSelection(popFromRing(), "around", "paste");}, "Ctrl-Space": setMark, "Ctrl-Shift-2": setMark, "Ctrl-F": move(byChar, 1), "Ctrl-B": move(byChar, -1), "Right": move(byChar, 1), "Left": move(byChar, -1), "Ctrl-D": function(cm) { killTo(cm, byChar, 1); }, "Delete": function(cm) { killRegion(cm) || killTo(cm, byChar, 1); }, "Ctrl-H": function(cm) { killTo(cm, byChar, -1); }, "Backspace": function(cm) { killRegion(cm) || killTo(cm, byChar, -1); }, "Alt-F": move(byWord, 1), "Alt-B": move(byWord, -1), "Alt-D": function(cm) { killTo(cm, byWord, 1); }, "Alt-Backspace": function(cm) { killTo(cm, byWord, -1); }, "Ctrl-N": move(byLine, 1), "Ctrl-P": move(byLine, -1), "Down": move(byLine, 1), "Up": move(byLine, -1), "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", "End": "goLineEnd", "Home": "goLineStart", "Alt-V": move(byPage, -1), "Ctrl-V": move(byPage, 1), "PageUp": move(byPage, -1), "PageDown": move(byPage, 1), "Ctrl-Up": move(byParagraph, -1), "Ctrl-Down": move(byParagraph, 1), "Alt-A": move(bySentence, -1), "Alt-E": move(bySentence, 1), "Alt-K": function(cm) { killTo(cm, bySentence, 1); }, "Ctrl-Alt-K": function(cm) { killTo(cm, byExpr, 1); }, "Ctrl-Alt-Backspace": function(cm) { killTo(cm, byExpr, -1); }, "Ctrl-Alt-F": move(byExpr, 1), "Ctrl-Alt-B": move(byExpr, -1), "Shift-Ctrl-Alt-2": function(cm) { var cursor = cm.getCursor(); cm.setSelection(findEnd(cm, cursor, byExpr, 1), cursor); }, "Ctrl-Alt-T": function(cm) { var leftStart = byExpr(cm, cm.getCursor(), -1), leftEnd = byExpr(cm, leftStart, 1); var rightEnd = byExpr(cm, leftEnd, 1), rightStart = byExpr(cm, rightEnd, -1); cm.replaceRange(cm.getRange(rightStart, rightEnd) + cm.getRange(leftEnd, rightStart) + cm.getRange(leftStart, leftEnd), leftStart, rightEnd); }, "Ctrl-Alt-U": repeated(toEnclosingExpr), "Alt-Space": function(cm) { var pos = cm.getCursor(), from = pos.ch, to = pos.ch, text = cm.getLine(pos.line); while (from && /\s/.test(text.charAt(from - 1))) --from; while (to < text.length && /\s/.test(text.charAt(to))) ++to; cm.replaceRange(" ", Pos(pos.line, from), Pos(pos.line, to)); }, "Ctrl-O": repeated(function(cm) { cm.replaceSelection("\n", "start"); }), "Ctrl-T": repeated(function(cm) { cm.execCommand("transposeChars"); }), "Alt-C": repeated(function(cm) { operateOnWord(cm, function(w) { var letter = w.search(/\w/); if (letter == -1) return w; return w.slice(0, letter) + w.charAt(letter).toUpperCase() + w.slice(letter + 1).toLowerCase(); }); }), "Alt-U": repeated(function(cm) { operateOnWord(cm, function(w) { return w.toUpperCase(); }); }), "Alt-L": repeated(function(cm) { operateOnWord(cm, function(w) { return w.toLowerCase(); }); }), "Alt-;": "toggleComment", "Ctrl-/": repeated("undo"), "Shift-Ctrl--": repeated("undo"), "Ctrl-Z": repeated("undo"), "Cmd-Z": repeated("undo"), "Shift-Alt-,": "goDocStart", "Shift-Alt-.": "goDocEnd", "Ctrl-S": "findNext", "Ctrl-R": "findPrev", "Ctrl-G": quit, "Shift-Alt-5": "replace", "Alt-/": "autocomplete", "Ctrl-J": "newlineAndIndent", "Enter": false, "Tab": "indentAuto", "Alt-G G": function(cm) { var prefix = getPrefix(cm, true); if (prefix != null && prefix > 0) return cm.setCursor(prefix - 1); getInput(cm, "Goto line", function(str) { var num; if (str && !isNaN(num = Number(str)) && num == num|0 && num > 0) cm.setCursor(num - 1); }); }, "Ctrl-X Tab": function(cm) { cm.indentSelection(getPrefix(cm, true) || cm.getOption("indentUnit")); }, "Ctrl-X Ctrl-X": function(cm) { cm.setSelection(cm.getCursor("head"), cm.getCursor("anchor")); }, "Ctrl-X Ctrl-S": "save", "Ctrl-X Ctrl-W": "save", "Ctrl-X S": "saveAll", "Ctrl-X F": "open", "Ctrl-X U": repeated("undo"), "Ctrl-X K": "close", "Ctrl-X Delete": function(cm) { kill(cm, cm.getCursor(), bySentence(cm, cm.getCursor(), 1), true); }, "Ctrl-X H": "selectAll", "Ctrl-Q Tab": repeated("insertTab"), "Ctrl-U": addPrefixMap }); var prefixMap = {"Ctrl-G": clearPrefix}; function regPrefix(d) { prefixMap[d] = function(cm) { addPrefix(cm, d); }; keyMap["Ctrl-" + d] = function(cm) { addPrefix(cm, d); }; prefixPreservingKeys["Ctrl-" + d] = true; } for (var i = 0; i < 10; ++i) regPrefix(String(i)); regPrefix("-"); });