546 lines
16 KiB
JavaScript
546 lines
16 KiB
JavaScript
// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: https://codemirror.net/LICENSE
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(function(mod) {
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if (typeof exports == "object" && typeof module == "object") // CommonJS
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mod(require("../lib/codemirror"));
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else if (typeof define == "function" && define.amd) // AMD
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define(["../lib/codemirror"], mod);
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else // Plain browser env
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mod(CodeMirror);
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})(function(CodeMirror) {
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"use strict";
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var cmds = CodeMirror.commands;
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var Pos = CodeMirror.Pos;
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function posEq(a, b) { return a.line == b.line && a.ch == b.ch; }
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// Kill 'ring'
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var killRing = [];
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function addToRing(str) {
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killRing.push(str);
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if (killRing.length > 50) killRing.shift();
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}
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function growRingTop(str) {
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if (!killRing.length) return addToRing(str);
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killRing[killRing.length - 1] += str;
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}
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function getFromRing(n) { return killRing[killRing.length - (n ? Math.min(n, 1) : 1)] || ""; }
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function popFromRing() { if (killRing.length > 1) killRing.pop(); return getFromRing(); }
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var lastKill = null;
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// Internal generic kill function, used by several mapped kill "family" functions.
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function _kill(cm, from, to, ring, text) {
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if (text == null) text = cm.getRange(from, to);
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if (ring == "grow" && lastKill && lastKill.cm == cm && posEq(from, lastKill.pos) && cm.isClean(lastKill.gen))
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growRingTop(text);
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else if (ring !== false)
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addToRing(text);
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cm.replaceRange("", from, to, "+delete");
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if (ring == "grow") lastKill = {cm: cm, pos: from, gen: cm.changeGeneration()};
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else lastKill = null;
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}
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// Boundaries of various units
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function byChar(cm, pos, dir) {
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return cm.findPosH(pos, dir, "char", true);
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}
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function byWord(cm, pos, dir) {
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return cm.findPosH(pos, dir, "word", true);
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}
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function byLine(cm, pos, dir) {
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return cm.findPosV(pos, dir, "line", cm.doc.sel.goalColumn);
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}
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function byPage(cm, pos, dir) {
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return cm.findPosV(pos, dir, "page", cm.doc.sel.goalColumn);
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}
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function byParagraph(cm, pos, dir) {
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var no = pos.line, line = cm.getLine(no);
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var sawText = /\S/.test(dir < 0 ? line.slice(0, pos.ch) : line.slice(pos.ch));
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var fst = cm.firstLine(), lst = cm.lastLine();
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for (;;) {
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no += dir;
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if (no < fst || no > lst)
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return cm.clipPos(Pos(no - dir, dir < 0 ? 0 : null));
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line = cm.getLine(no);
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var hasText = /\S/.test(line);
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if (hasText) sawText = true;
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else if (sawText) return Pos(no, 0);
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}
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}
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function bySentence(cm, pos, dir) {
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var line = pos.line, ch = pos.ch;
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var text = cm.getLine(pos.line), sawWord = false;
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for (;;) {
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var next = text.charAt(ch + (dir < 0 ? -1 : 0));
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if (!next) { // End/beginning of line reached
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if (line == (dir < 0 ? cm.firstLine() : cm.lastLine())) return Pos(line, ch);
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text = cm.getLine(line + dir);
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if (!/\S/.test(text)) return Pos(line, ch);
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line += dir;
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ch = dir < 0 ? text.length : 0;
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continue;
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}
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if (sawWord && /[!?.]/.test(next)) return Pos(line, ch + (dir > 0 ? 1 : 0));
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if (!sawWord) sawWord = /\w/.test(next);
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ch += dir;
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}
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}
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function byExpr(cm, pos, dir) {
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var wrap;
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if (cm.findMatchingBracket && (wrap = cm.findMatchingBracket(pos, {strict: true}))
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&& wrap.match && (wrap.forward ? 1 : -1) == dir)
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return dir > 0 ? Pos(wrap.to.line, wrap.to.ch + 1) : wrap.to;
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for (var first = true;; first = false) {
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var token = cm.getTokenAt(pos);
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var after = Pos(pos.line, dir < 0 ? token.start : token.end);
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if (first && dir > 0 && token.end == pos.ch || !/\w/.test(token.string)) {
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var newPos = cm.findPosH(after, dir, "char");
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if (posEq(after, newPos)) return pos;
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else pos = newPos;
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} else {
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return after;
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}
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}
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}
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// Prefixes (only crudely supported)
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function getPrefix(cm, precise) {
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var digits = cm.state.emacsPrefix;
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if (!digits) return precise ? null : 1;
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clearPrefix(cm);
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return digits == "-" ? -1 : Number(digits);
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}
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function repeated(cmd) {
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var f = typeof cmd == "string" ? function(cm) { cm.execCommand(cmd); } : cmd;
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return function(cm) {
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var prefix = getPrefix(cm);
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f(cm);
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for (var i = 1; i < prefix; ++i) f(cm);
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};
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}
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function findEnd(cm, pos, by, dir) {
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var prefix = getPrefix(cm);
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if (prefix < 0) { dir = -dir; prefix = -prefix; }
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for (var i = 0; i < prefix; ++i) {
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var newPos = by(cm, pos, dir);
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if (posEq(newPos, pos)) break;
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pos = newPos;
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}
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return pos;
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}
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function move(by, dir) {
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var f = function(cm) {
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cm.extendSelection(findEnd(cm, cm.getCursor(), by, dir));
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};
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f.motion = true;
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return f;
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}
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function killTo(cm, by, dir, ring) {
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var selections = cm.listSelections(), cursor;
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var i = selections.length;
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while (i--) {
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cursor = selections[i].head;
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_kill(cm, cursor, findEnd(cm, cursor, by, dir), ring);
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}
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}
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function _killRegion(cm, ring) {
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if (cm.somethingSelected()) {
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var selections = cm.listSelections(), selection;
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var i = selections.length;
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while (i--) {
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selection = selections[i];
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_kill(cm, selection.anchor, selection.head, ring);
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}
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return true;
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}
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}
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function addPrefix(cm, digit) {
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if (cm.state.emacsPrefix) {
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if (digit != "-") cm.state.emacsPrefix += digit;
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return;
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}
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// Not active yet
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cm.state.emacsPrefix = digit;
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cm.on("keyHandled", maybeClearPrefix);
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cm.on("inputRead", maybeDuplicateInput);
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}
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var prefixPreservingKeys = {"Alt-G": true, "Ctrl-X": true, "Ctrl-Q": true, "Ctrl-U": true};
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function maybeClearPrefix(cm, arg) {
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if (!cm.state.emacsPrefixMap && !prefixPreservingKeys.hasOwnProperty(arg))
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clearPrefix(cm);
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}
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function clearPrefix(cm) {
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cm.state.emacsPrefix = null;
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cm.off("keyHandled", maybeClearPrefix);
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cm.off("inputRead", maybeDuplicateInput);
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}
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function maybeDuplicateInput(cm, event) {
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var dup = getPrefix(cm);
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if (dup > 1 && event.origin == "+input") {
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var one = event.text.join("\n"), txt = "";
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for (var i = 1; i < dup; ++i) txt += one;
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cm.replaceSelection(txt);
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}
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}
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function maybeRemovePrefixMap(cm, arg) {
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if (typeof arg == "string" && (/^\d$/.test(arg) || arg == "Ctrl-U")) return;
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cm.removeKeyMap(prefixMap);
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cm.state.emacsPrefixMap = false;
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cm.off("keyHandled", maybeRemovePrefixMap);
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cm.off("inputRead", maybeRemovePrefixMap);
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}
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// Utilities
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cmds.setMark = function (cm) {
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cm.setCursor(cm.getCursor());
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cm.setExtending(!cm.getExtending());
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cm.on("change", function() { cm.setExtending(false); });
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}
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function clearMark(cm) {
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cm.setExtending(false);
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cm.setCursor(cm.getCursor());
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}
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function makePrompt(msg) {
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var fragment = document.createDocumentFragment();
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var input = document.createElement("input");
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input.setAttribute("type", "text");
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input.style.width = "10em";
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fragment.appendChild(document.createTextNode(msg + ": "));
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fragment.appendChild(input);
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return fragment;
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}
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function getInput(cm, msg, f) {
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if (cm.openDialog)
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cm.openDialog(makePrompt(msg), f, {bottom: true});
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else
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f(prompt(msg, ""));
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}
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function operateOnWord(cm, op) {
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var start = cm.getCursor(), end = cm.findPosH(start, 1, "word");
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cm.replaceRange(op(cm.getRange(start, end)), start, end);
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cm.setCursor(end);
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}
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function toEnclosingExpr(cm) {
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var pos = cm.getCursor(), line = pos.line, ch = pos.ch;
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var stack = [];
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while (line >= cm.firstLine()) {
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var text = cm.getLine(line);
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for (var i = ch == null ? text.length : ch; i > 0;) {
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var ch = text.charAt(--i);
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if (ch == ")")
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stack.push("(");
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else if (ch == "]")
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stack.push("[");
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else if (ch == "}")
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stack.push("{");
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else if (/[\(\{\[]/.test(ch) && (!stack.length || stack.pop() != ch))
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return cm.extendSelection(Pos(line, i));
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}
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--line; ch = null;
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}
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}
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// Commands. Names should match emacs function names (albeit in camelCase)
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// except where emacs function names collide with code mirror core commands.
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cmds.killRegion = function(cm) {
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_kill(cm, cm.getCursor("start"), cm.getCursor("end"), true);
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};
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// Maps to emacs kill-line
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cmds.killLineEmacs = repeated(function(cm) {
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var start = cm.getCursor(), end = cm.clipPos(Pos(start.line));
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var text = cm.getRange(start, end);
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if (!/\S/.test(text)) {
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text += "\n";
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end = Pos(start.line + 1, 0);
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}
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_kill(cm, start, end, "grow", text);
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});
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cmds.killRingSave = function(cm) {
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addToRing(cm.getSelection());
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clearMark(cm);
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};
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cmds.yank = function(cm) {
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var start = cm.getCursor();
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cm.replaceRange(getFromRing(getPrefix(cm)), start, start, "paste");
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cm.setSelection(start, cm.getCursor());
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};
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cmds.yankPop = function(cm) {
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cm.replaceSelection(popFromRing(), "around", "paste");
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};
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cmds.forwardChar = move(byChar, 1);
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cmds.backwardChar = move(byChar, -1)
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cmds.deleteChar = function(cm) { killTo(cm, byChar, 1, false); };
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cmds.deleteForwardChar = function(cm) {
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_killRegion(cm, false) || killTo(cm, byChar, 1, false);
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};
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cmds.deleteBackwardChar = function(cm) {
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_killRegion(cm, false) || killTo(cm, byChar, -1, false);
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};
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cmds.forwardWord = move(byWord, 1);
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cmds.backwardWord = move(byWord, -1);
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cmds.killWord = function(cm) { killTo(cm, byWord, 1, "grow"); };
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cmds.backwardKillWord = function(cm) { killTo(cm, byWord, -1, "grow"); };
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cmds.nextLine = move(byLine, 1);
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cmds.previousLine = move(byLine, -1);
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cmds.scrollDownCommand = move(byPage, -1);
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cmds.scrollUpCommand = move(byPage, 1);
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cmds.backwardParagraph = move(byParagraph, -1);
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cmds.forwardParagraph = move(byParagraph, 1);
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cmds.backwardSentence = move(bySentence, -1);
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cmds.forwardSentence = move(bySentence, 1);
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cmds.killSentence = function(cm) { killTo(cm, bySentence, 1, "grow"); };
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cmds.backwardKillSentence = function(cm) {
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_kill(cm, cm.getCursor(), bySentence(cm, cm.getCursor(), 1), "grow");
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};
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cmds.killSexp = function(cm) { killTo(cm, byExpr, 1, "grow"); };
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cmds.backwardKillSexp = function(cm) { killTo(cm, byExpr, -1, "grow"); };
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cmds.forwardSexp = move(byExpr, 1);
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cmds.backwardSexp = move(byExpr, -1);
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cmds.markSexp = function(cm) {
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var cursor = cm.getCursor();
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cm.setSelection(findEnd(cm, cursor, byExpr, 1), cursor);
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};
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cmds.transposeSexps = function(cm) {
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var leftStart = byExpr(cm, cm.getCursor(), -1);
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var leftEnd = byExpr(cm, leftStart, 1);
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var rightEnd = byExpr(cm, leftEnd, 1);
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var rightStart = byExpr(cm, rightEnd, -1);
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cm.replaceRange(cm.getRange(rightStart, rightEnd) +
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cm.getRange(leftEnd, rightStart) +
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cm.getRange(leftStart, leftEnd), leftStart, rightEnd);
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};
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cmds.backwardUpList = repeated(toEnclosingExpr);
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cmds.justOneSpace = function(cm) {
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var pos = cm.getCursor(), from = pos.ch;
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var to = pos.ch, text = cm.getLine(pos.line);
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while (from && /\s/.test(text.charAt(from - 1))) --from;
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while (to < text.length && /\s/.test(text.charAt(to))) ++to;
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cm.replaceRange(" ", Pos(pos.line, from), Pos(pos.line, to));
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};
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cmds.openLine = repeated(function(cm) {
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cm.replaceSelection("\n", "start");
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});
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// maps to emacs 'transpose-chars'
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cmds.transposeCharsRepeatable = repeated(function(cm) {
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cm.execCommand("transposeChars");
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});
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cmds.capitalizeWord = repeated(function(cm) {
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operateOnWord(cm, function(w) {
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var letter = w.search(/\w/);
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if (letter == -1) return w;
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return w.slice(0, letter) + w.charAt(letter).toUpperCase() +
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w.slice(letter + 1).toLowerCase();
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});
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});
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cmds.upcaseWord = repeated(function(cm) {
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operateOnWord(cm, function(w) { return w.toUpperCase(); });
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});
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cmds.downcaseWord = repeated(function(cm) {
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operateOnWord(cm, function(w) { return w.toLowerCase(); });
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});
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// maps to emacs 'undo'
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cmds.undoRepeatable = repeated("undo");
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cmds.keyboardQuit = function(cm) {
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cm.execCommand("clearSearch");
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clearMark(cm);
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}
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cmds.newline = repeated(function(cm) { cm.replaceSelection("\n", "end"); });
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cmds.gotoLine = function(cm) {
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var prefix = getPrefix(cm, true);
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if (prefix != null && prefix > 0) return cm.setCursor(prefix - 1);
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getInput(cm, "Goto line", function(str) {
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var num;
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if (str && !isNaN(num = Number(str)) && num == (num|0) && num > 0)
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cm.setCursor(num - 1);
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});
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};
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cmds.indentRigidly = function(cm) {
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cm.indentSelection(getPrefix(cm, true) || cm.getOption("indentUnit"));
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};
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cmds.exchangePointAndMark = function(cm) {
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cm.setSelection(cm.getCursor("head"), cm.getCursor("anchor"));
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};
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cmds.quotedInsertTab = repeated("insertTab");
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cmds.universalArgument = function addPrefixMap(cm) {
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cm.state.emacsPrefixMap = true;
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cm.addKeyMap(prefixMap);
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cm.on("keyHandled", maybeRemovePrefixMap);
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cm.on("inputRead", maybeRemovePrefixMap);
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};
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CodeMirror.emacs = {kill: _kill, killRegion: _killRegion, repeated: repeated};
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// Actual keymap
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var keyMap = CodeMirror.keyMap.emacs = CodeMirror.normalizeKeyMap({
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"Ctrl-W": "killRegion",
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"Ctrl-K": "killLineEmacs",
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"Alt-W": "killRingSave",
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"Ctrl-Y": "yank",
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"Alt-Y": "yankPop",
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"Ctrl-Space": "setMark",
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"Ctrl-Shift-2": "setMark",
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"Ctrl-F": "forwardChar",
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"Ctrl-B": "backwardChar",
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"Right": "forwardChar",
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"Left": "backwardChar",
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"Ctrl-D": "deleteChar",
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"Delete": "deleteForwardChar",
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"Ctrl-H": "deleteBackwardChar",
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"Backspace": "deleteBackwardChar",
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"Alt-F": "forwardWord",
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"Alt-B": "backwardWord",
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"Alt-Right": "forwardWord",
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"Alt-Left": "backwardWord",
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"Alt-D": "killWord",
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"Alt-Backspace": "backwardKillWord",
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"Ctrl-N": "nextLine",
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"Ctrl-P": "previousLine",
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"Down": "nextLine",
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"Up": "previousLine",
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"Ctrl-A": "goLineStart",
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"Ctrl-E": "goLineEnd",
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"End": "goLineEnd",
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"Home": "goLineStart",
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"Alt-V": "scrollDownCommand",
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"Ctrl-V": "scrollUpCommand",
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"PageUp": "scrollDownCommand",
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"PageDown": "scrollUpCommand",
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"Ctrl-Up": "backwardParagraph",
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"Ctrl-Down": "forwardParagraph",
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"Alt-{": "backwardParagraph",
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"Alt-}": "forwardParagraph",
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"Alt-A": "backwardSentence",
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"Alt-E": "forwardSentence",
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"Alt-K": "killSentence",
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"Ctrl-X Delete": "backwardKillSentence",
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"Ctrl-Alt-K": "killSexp",
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"Ctrl-Alt-Backspace": "backwardKillSexp",
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"Ctrl-Alt-F": "forwardSexp",
|
|
"Ctrl-Alt-B": "backwardSexp",
|
|
"Shift-Ctrl-Alt-2": "markSexp",
|
|
"Ctrl-Alt-T": "transposeSexps",
|
|
"Ctrl-Alt-U": "backwardUpList",
|
|
"Alt-Space": "justOneSpace",
|
|
"Ctrl-O": "openLine",
|
|
"Ctrl-T": "transposeCharsRepeatable",
|
|
"Alt-C": "capitalizeWord",
|
|
"Alt-U": "upcaseWord",
|
|
"Alt-L": "downcaseWord",
|
|
"Alt-;": "toggleComment",
|
|
"Ctrl-/": "undoRepeatable",
|
|
"Shift-Ctrl--": "undoRepeatable",
|
|
"Ctrl-Z": "undoRepeatable",
|
|
"Cmd-Z": "undoRepeatable",
|
|
"Ctrl-X U": "undoRepeatable",
|
|
"Shift-Ctrl-Z": "redo",
|
|
"Shift-Alt-,": "goDocStart",
|
|
"Shift-Alt-.": "goDocEnd",
|
|
"Ctrl-S": "findPersistentNext",
|
|
"Ctrl-R": "findPersistentPrev",
|
|
"Ctrl-G": "keyboardQuit",
|
|
"Shift-Alt-5": "replace",
|
|
"Alt-/": "autocomplete",
|
|
"Enter": "newlineAndIndent",
|
|
"Ctrl-J": "newline",
|
|
"Tab": "indentAuto",
|
|
"Alt-G G": "gotoLine",
|
|
"Ctrl-X Tab": "indentRigidly",
|
|
"Ctrl-X Ctrl-X": "exchangePointAndMark",
|
|
"Ctrl-X Ctrl-S": "save",
|
|
"Ctrl-X Ctrl-W": "save",
|
|
"Ctrl-X S": "saveAll",
|
|
"Ctrl-X F": "open",
|
|
"Ctrl-X K": "close",
|
|
"Ctrl-X H": "selectAll",
|
|
"Ctrl-Q Tab": "quotedInsertTab",
|
|
"Ctrl-U": "universalArgument",
|
|
"fallthrough": "default"
|
|
});
|
|
|
|
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("-");
|
|
});
|