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- /* ***** BEGIN LICENSE BLOCK *****
- * Distributed under the BSD license:
- *
- * Copyright (c) 2010, Ajax.org B.V.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * * Neither the name of Ajax.org B.V. nor the
- * names of its contributors may be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * ***** END LICENSE BLOCK ***** */
- define(function(require, exports, module) {
- "use strict";
- var dom = require("../lib/dom");
- require("../incremental_search");
- var iSearchCommandModule = require("../commands/incremental_search_commands");
- var screenToTextBlockCoordinates = function(x, y) {
- var canvasPos = this.scroller.getBoundingClientRect();
- var col = Math.floor(
- (x + this.scrollLeft - canvasPos.left - this.$padding) / this.characterWidth
- );
- var row = Math.floor(
- (y + this.scrollTop - canvasPos.top) / this.lineHeight
- );
- return this.session.screenToDocumentPosition(row, col);
- };
- var HashHandler = require("./hash_handler").HashHandler;
- exports.handler = new HashHandler();
- exports.handler.isEmacs = true;
- exports.handler.$id = "ace/keyboard/emacs";
- var initialized = false;
- var $formerLongWords;
- var $formerLineStart;
- exports.handler.attach = function(editor) {
- if (!initialized) {
- initialized = true;
- dom.importCssString('\
- .emacs-mode .ace_cursor{\
- border: 1px rgba(50,250,50,0.8) solid!important;\
- -moz-box-sizing: border-box!important;\
- -webkit-box-sizing: border-box!important;\
- box-sizing: border-box!important;\
- background-color: rgba(0,250,0,0.9);\
- opacity: 0.5;\
- }\
- .emacs-mode .ace_hidden-cursors .ace_cursor{\
- opacity: 1;\
- background-color: transparent;\
- }\
- .emacs-mode .ace_overwrite-cursors .ace_cursor {\
- opacity: 1;\
- background-color: transparent;\
- border-width: 0 0 2px 2px !important;\
- }\
- .emacs-mode .ace_text-layer {\
- z-index: 4\
- }\
- .emacs-mode .ace_cursor-layer {\
- z-index: 2\
- }', 'emacsMode'
- );
- }
- // in emacs, gotowordleft/right should not count a space as a word..
- $formerLongWords = editor.session.$selectLongWords;
- editor.session.$selectLongWords = true;
- // CTRL-A should go to actual beginning of line
- $formerLineStart = editor.session.$useEmacsStyleLineStart;
- editor.session.$useEmacsStyleLineStart = true;
- editor.session.$emacsMark = null; // the active mark
- editor.session.$emacsMarkRing = editor.session.$emacsMarkRing || [];
- editor.emacsMark = function() {
- return this.session.$emacsMark;
- };
- editor.setEmacsMark = function(p) {
- // to deactivate pass in a falsy value
- this.session.$emacsMark = p;
- };
- editor.pushEmacsMark = function(p, activate) {
- var prevMark = this.session.$emacsMark;
- if (prevMark)
- this.session.$emacsMarkRing.push(prevMark);
- if (!p || activate) this.setEmacsMark(p);
- else this.session.$emacsMarkRing.push(p);
- };
- editor.popEmacsMark = function() {
- var mark = this.emacsMark();
- if (mark) { this.setEmacsMark(null); return mark; }
- return this.session.$emacsMarkRing.pop();
- };
- editor.getLastEmacsMark = function(p) {
- return this.session.$emacsMark || this.session.$emacsMarkRing.slice(-1)[0];
- };
- editor.emacsMarkForSelection = function(replacement) {
- // find the mark in $emacsMarkRing corresponding to the current
- // selection
- var sel = this.selection,
- multiRangeLength = this.multiSelect ?
- this.multiSelect.getAllRanges().length : 1,
- selIndex = sel.index || 0,
- markRing = this.session.$emacsMarkRing,
- markIndex = markRing.length - (multiRangeLength - selIndex),
- lastMark = markRing[markIndex] || sel.anchor;
- if (replacement) {
- markRing.splice(markIndex, 1,
- "row" in replacement && "column" in replacement ?
- replacement : undefined);
- }
- return lastMark;
- }
- editor.on("click", $resetMarkMode);
- editor.on("changeSession", $kbSessionChange);
- editor.renderer.screenToTextCoordinates = screenToTextBlockCoordinates;
- editor.setStyle("emacs-mode");
- editor.commands.addCommands(commands);
- exports.handler.platform = editor.commands.platform;
- editor.$emacsModeHandler = this;
- editor.addEventListener('copy', this.onCopy);
- editor.addEventListener('paste', this.onPaste);
- };
- exports.handler.detach = function(editor) {
- delete editor.renderer.screenToTextCoordinates;
- editor.session.$selectLongWords = $formerLongWords;
- editor.session.$useEmacsStyleLineStart = $formerLineStart;
- editor.removeEventListener("click", $resetMarkMode);
- editor.removeEventListener("changeSession", $kbSessionChange);
- editor.unsetStyle("emacs-mode");
- editor.commands.removeCommands(commands);
- editor.removeEventListener('copy', this.onCopy);
- editor.removeEventListener('paste', this.onPaste);
- editor.$emacsModeHandler = null;
- };
- var $kbSessionChange = function(e) {
- if (e.oldSession) {
- e.oldSession.$selectLongWords = $formerLongWords;
- e.oldSession.$useEmacsStyleLineStart = $formerLineStart;
- }
- $formerLongWords = e.session.$selectLongWords;
- e.session.$selectLongWords = true;
- $formerLineStart = e.session.$useEmacsStyleLineStart;
- e.session.$useEmacsStyleLineStart = true;
- if (!e.session.hasOwnProperty('$emacsMark'))
- e.session.$emacsMark = null;
- if (!e.session.hasOwnProperty('$emacsMarkRing'))
- e.session.$emacsMarkRing = [];
- };
- var $resetMarkMode = function(e) {
- e.editor.session.$emacsMark = null;
- };
- var keys = require("../lib/keys").KEY_MODS;
- var eMods = {C: "ctrl", S: "shift", M: "alt", CMD: "command"};
- var combinations = ["C-S-M-CMD",
- "S-M-CMD", "C-M-CMD", "C-S-CMD", "C-S-M",
- "M-CMD", "S-CMD", "S-M", "C-CMD", "C-M", "C-S",
- "CMD", "M", "S", "C"];
- combinations.forEach(function(c) {
- var hashId = 0;
- c.split("-").forEach(function(c) {
- hashId = hashId | keys[eMods[c]];
- });
- eMods[hashId] = c.toLowerCase() + "-";
- });
- exports.handler.onCopy = function(e, editor) {
- if (editor.$handlesEmacsOnCopy) return;
- editor.$handlesEmacsOnCopy = true;
- exports.handler.commands.killRingSave.exec(editor);
- editor.$handlesEmacsOnCopy = false;
- };
- exports.handler.onPaste = function(e, editor) {
- editor.pushEmacsMark(editor.getCursorPosition());
- };
- exports.handler.bindKey = function(key, command) {
- if (typeof key == "object")
- key = key[this.platform];
- if (!key)
- return;
- var ckb = this.commandKeyBinding;
- key.split("|").forEach(function(keyPart) {
- keyPart = keyPart.toLowerCase();
- ckb[keyPart] = command;
- // register all partial key combos as null commands
- // to be able to activate key combos with arbitrary length
- // Example: if keyPart is "C-c C-l t" then "C-c C-l t" will
- // get command assigned and "C-c" and "C-c C-l" will get
- // a null command assigned in this.commandKeyBinding. For
- // the lookup logic see handleKeyboard()
- var keyParts = keyPart.split(" ").slice(0,-1);
- keyParts.reduce(function(keyMapKeys, keyPart, i) {
- var prefix = keyMapKeys[i-1] ? keyMapKeys[i-1] + ' ' : '';
- return keyMapKeys.concat([prefix + keyPart]);
- }, []).forEach(function(keyPart) {
- if (!ckb[keyPart]) ckb[keyPart] = "null";
- });
- }, this);
- };
- exports.handler.getStatusText = function(editor, data) {
- var str = "";
- if (data.count)
- str += data.count;
- if (data.keyChain)
- str += " " + data.keyChain
- return str;
- };
- exports.handler.handleKeyboard = function(data, hashId, key, keyCode) {
- // if keyCode == -1 a non-printable key was pressed, such as just
- // control. Handling those is currently not supported in this handler
- if (keyCode === -1) return undefined;
- var editor = data.editor;
- editor._signal("changeStatus");
- // insertstring data.count times
- if (hashId == -1) {
- editor.pushEmacsMark();
- if (data.count) {
- var str = new Array(data.count + 1).join(key);
- data.count = null;
- return {command: "insertstring", args: str};
- }
- }
- var modifier = eMods[hashId];
- // CTRL + number / universalArgument for setting data.count
- if (modifier == "c-" || data.count) {
- var count = parseInt(key[key.length - 1]);
- if (typeof count === 'number' && !isNaN(count)) {
- data.count = Math.max(data.count, 0) || 0;
- data.count = 10 * data.count + count;
- return {command: "null"};
- }
- }
- // this.commandKeyBinding maps key specs like "c-p" (for CTRL + P) to
- // command objects, for lookup key needs to include the modifier
- if (modifier) key = modifier + key;
- // Key combos like CTRL+X H build up the data.keyChain
- if (data.keyChain) key = data.keyChain += " " + key;
- // Key combo prefixes get stored as "null" (String!) in this
- // this.commandKeyBinding. When encountered no command is invoked but we
- // buld up data.keyChain
- var command = this.commandKeyBinding[key];
- data.keyChain = command == "null" ? key : "";
- // there really is no command
- if (!command) return undefined;
- // we pass b/c of key combo or universalArgument
- if (command === "null") return {command: "null"};
- if (command === "universalArgument") {
- // if no number pressed emacs repeats action 4 times.
- // minus sign is needed to allow next keypress to replace it
- data.count = -4;
- return {command: "null"};
- }
- // lookup command
- // TODO extract special handling of markmode
- // TODO special case command.command is really unnecessary, remove
- var args;
- if (typeof command !== "string") {
- args = command.args;
- if (command.command) command = command.command;
- if (command === "goorselect") {
- command = editor.emacsMark() ? args[1] : args[0];
- args = null;
- }
- }
- if (typeof command === "string") {
- if (command === "insertstring" ||
- command === "splitline" ||
- command === "togglecomment") {
- editor.pushEmacsMark();
- }
- command = this.commands[command] || editor.commands.commands[command];
- if (!command) return undefined;
- }
- if (!command.readOnly && !command.isYank)
- data.lastCommand = null;
- if (!command.readOnly && editor.emacsMark())
- editor.setEmacsMark(null)
-
- if (data.count) {
- var count = data.count;
- data.count = 0;
- if (!command || !command.handlesCount) {
- return {
- args: args,
- command: {
- exec: function(editor, args) {
- for (var i = 0; i < count; i++)
- command.exec(editor, args);
- },
- multiSelectAction: command.multiSelectAction
- }
- };
- } else {
- if (!args) args = {};
- if (typeof args === 'object') args.count = count;
- }
- }
- return {command: command, args: args};
- };
- exports.emacsKeys = {
- // movement
- "Up|C-p" : {command: "goorselect", args: ["golineup","selectup"]},
- "Down|C-n" : {command: "goorselect", args: ["golinedown","selectdown"]},
- "Left|C-b" : {command: "goorselect", args: ["gotoleft","selectleft"]},
- "Right|C-f" : {command: "goorselect", args: ["gotoright","selectright"]},
- "C-Left|M-b" : {command: "goorselect", args: ["gotowordleft","selectwordleft"]},
- "C-Right|M-f" : {command: "goorselect", args: ["gotowordright","selectwordright"]},
- "Home|C-a" : {command: "goorselect", args: ["gotolinestart","selecttolinestart"]},
- "End|C-e" : {command: "goorselect", args: ["gotolineend","selecttolineend"]},
- "C-Home|S-M-,": {command: "goorselect", args: ["gotostart","selecttostart"]},
- "C-End|S-M-." : {command: "goorselect", args: ["gotoend","selecttoend"]},
- // selection
- "S-Up|S-C-p" : "selectup",
- "S-Down|S-C-n" : "selectdown",
- "S-Left|S-C-b" : "selectleft",
- "S-Right|S-C-f" : "selectright",
- "S-C-Left|S-M-b" : "selectwordleft",
- "S-C-Right|S-M-f" : "selectwordright",
- "S-Home|S-C-a" : "selecttolinestart",
- "S-End|S-C-e" : "selecttolineend",
- "S-C-Home" : "selecttostart",
- "S-C-End" : "selecttoend",
- "C-l" : "recenterTopBottom",
- "M-s" : "centerselection",
- "M-g": "gotoline",
- "C-x C-p": "selectall",
- // todo fix these
- "C-Down": {command: "goorselect", args: ["gotopagedown","selectpagedown"]},
- "C-Up": {command: "goorselect", args: ["gotopageup","selectpageup"]},
- "PageDown|C-v": {command: "goorselect", args: ["gotopagedown","selectpagedown"]},
- "PageUp|M-v": {command: "goorselect", args: ["gotopageup","selectpageup"]},
- "S-C-Down": "selectpagedown",
- "S-C-Up": "selectpageup",
- "C-s": "iSearch",
- "C-r": "iSearchBackwards",
- "M-C-s": "findnext",
- "M-C-r": "findprevious",
- "S-M-5": "replace",
- // basic editing
- "Backspace": "backspace",
- "Delete|C-d": "del",
- "Return|C-m": {command: "insertstring", args: "\n"}, // "newline"
- "C-o": "splitline",
- "M-d|C-Delete": {command: "killWord", args: "right"},
- "C-Backspace|M-Backspace|M-Delete": {command: "killWord", args: "left"},
- "C-k": "killLine",
- "C-y|S-Delete": "yank",
- "M-y": "yankRotate",
- "C-g": "keyboardQuit",
- "C-w|C-S-W": "killRegion",
- "M-w": "killRingSave",
- "C-Space": "setMark",
- "C-x C-x": "exchangePointAndMark",
- "C-t": "transposeletters",
- "M-u": "touppercase", // Doesn't work
- "M-l": "tolowercase",
- "M-/": "autocomplete", // Doesn't work
- "C-u": "universalArgument",
- "M-;": "togglecomment",
- "C-/|C-x u|S-C--|C-z": "undo",
- "S-C-/|S-C-x u|C--|S-C-z": "redo", // infinite undo?
- // vertical editing
- "C-x r": "selectRectangularRegion",
- "M-x": {command: "focusCommandLine", args: "M-x "}
- // todo
- // "C-x C-t" "M-t" "M-c" "F11" "C-M- "M-q"
- };
- exports.handler.bindKeys(exports.emacsKeys);
- exports.handler.addCommands({
- recenterTopBottom: function(editor) {
- var renderer = editor.renderer;
- var pos = renderer.$cursorLayer.getPixelPosition();
- var h = renderer.$size.scrollerHeight - renderer.lineHeight;
- var scrollTop = renderer.scrollTop;
- if (Math.abs(pos.top - scrollTop) < 2) {
- scrollTop = pos.top - h;
- } else if (Math.abs(pos.top - scrollTop - h * 0.5) < 2) {
- scrollTop = pos.top;
- } else {
- scrollTop = pos.top - h * 0.5;
- }
- editor.session.setScrollTop(scrollTop);
- },
- selectRectangularRegion: function(editor) {
- editor.multiSelect.toggleBlockSelection();
- },
- setMark: {
- exec: function(editor, args) {
- // Sets mark-mode and clears current selection.
- // When mark is set, keyboard cursor movement commands become
- // selection modification commands. That is,
- // "goto" commands become "select" commands.
- // Any insertion or mouse click resets mark-mode.
- // setMark twice in a row at the same place resets markmode.
- // in multi select mode, ea selection is handled individually
- if (args && args.count) {
- if (editor.inMultiSelectMode) editor.forEachSelection(moveToMark);
- else moveToMark();
- moveToMark();
- return;
- }
- var mark = editor.emacsMark(),
- ranges = editor.selection.getAllRanges(),
- rangePositions = ranges.map(function(r) { return {row: r.start.row, column: r.start.column}; }),
- transientMarkModeActive = true,
- hasNoSelection = ranges.every(function(range) { return range.isEmpty(); });
- // if transientMarkModeActive then mark behavior is a little
- // different. Deactivate the mark when setMark is run with active
- // mark
- if (transientMarkModeActive && (mark || !hasNoSelection)) {
- if (editor.inMultiSelectMode) editor.forEachSelection({exec: editor.clearSelection.bind(editor)});
- else editor.clearSelection();
- if (mark) editor.pushEmacsMark(null);
- return;
- }
- if (!mark) {
- rangePositions.forEach(function(pos) { editor.pushEmacsMark(pos); });
- editor.setEmacsMark(rangePositions[rangePositions.length-1]);
- return;
- }
- // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
- function moveToMark() {
- var mark = editor.popEmacsMark();
- mark && editor.moveCursorToPosition(mark);
- }
- },
- readOnly: true,
- handlesCount: true
- },
- exchangePointAndMark: {
- exec: function exchangePointAndMark$exec(editor, args) {
- var sel = editor.selection;
- if (!args.count && !sel.isEmpty()) { // just invert selection
- sel.setSelectionRange(sel.getRange(), !sel.isBackwards());
- return;
- }
- if (args.count) { // replace mark and point
- var pos = {row: sel.lead.row, column: sel.lead.column};
- sel.clearSelection();
- sel.moveCursorToPosition(editor.emacsMarkForSelection(pos));
- } else { // create selection to last mark
- sel.selectToPosition(editor.emacsMarkForSelection());
- }
- },
- readOnly: true,
- handlesCount: true,
- multiSelectAction: "forEach"
- },
- killWord: {
- exec: function(editor, dir) {
- editor.clearSelection();
- if (dir == "left")
- editor.selection.selectWordLeft();
- else
- editor.selection.selectWordRight();
- var range = editor.getSelectionRange();
- var text = editor.session.getTextRange(range);
- exports.killRing.add(text);
- editor.session.remove(range);
- editor.clearSelection();
- },
- multiSelectAction: "forEach"
- },
- killLine: function(editor) {
- editor.pushEmacsMark(null);
- // don't delete the selection if it's before the cursor
- editor.clearSelection();
- var range = editor.getSelectionRange();
- var line = editor.session.getLine(range.start.row);
- range.end.column = line.length;
- line = line.substr(range.start.column)
-
- var foldLine = editor.session.getFoldLine(range.start.row);
- if (foldLine && range.end.row != foldLine.end.row) {
- range.end.row = foldLine.end.row;
- line = "x";
- }
- // remove EOL if only whitespace remains after the cursor
- if (/^\s*$/.test(line)) {
- range.end.row++;
- line = editor.session.getLine(range.end.row);
- range.end.column = /^\s*$/.test(line) ? line.length : 0;
- }
- var text = editor.session.getTextRange(range);
- if (editor.prevOp.command == this)
- exports.killRing.append(text);
- else
- exports.killRing.add(text);
- editor.session.remove(range);
- editor.clearSelection();
- },
- yank: function(editor) {
- editor.onPaste(exports.killRing.get() || '');
- editor.keyBinding.$data.lastCommand = "yank";
- },
- yankRotate: function(editor) {
- if (editor.keyBinding.$data.lastCommand != "yank")
- return;
- editor.undo();
- editor.session.$emacsMarkRing.pop(); // also undo recording mark
- editor.onPaste(exports.killRing.rotate());
- editor.keyBinding.$data.lastCommand = "yank";
- },
- killRegion: {
- exec: function(editor) {
- exports.killRing.add(editor.getCopyText());
- editor.commands.byName.cut.exec(editor);
- },
- readOnly: true,
- multiSelectAction: "forEach"
- },
- killRingSave: {
- exec: function(editor) {
- // copy text and deselect. will save marks for starts of the
- // selection(s)
- editor.$handlesEmacsOnCopy = true;
- var marks = editor.session.$emacsMarkRing.slice(),
- deselectedMarks = [];
- exports.killRing.add(editor.getCopyText());
- setTimeout(function() {
- function deselect() {
- var sel = editor.selection, range = sel.getRange(),
- pos = sel.isBackwards() ? range.end : range.start;
- deselectedMarks.push({row: pos.row, column: pos.column});
- sel.clearSelection();
- }
- editor.$handlesEmacsOnCopy = false;
- if (editor.inMultiSelectMode) editor.forEachSelection({exec: deselect});
- else deselect();
- editor.session.$emacsMarkRing = marks.concat(deselectedMarks.reverse());
- }, 0);
- },
- readOnly: true
- },
- keyboardQuit: function(editor) {
- editor.selection.clearSelection();
- editor.setEmacsMark(null);
- editor.keyBinding.$data.count = null;
- },
- focusCommandLine: function(editor, arg) {
- if (editor.showCommandLine)
- editor.showCommandLine(arg);
- }
- });
- exports.handler.addCommands(iSearchCommandModule.iSearchStartCommands);
- var commands = exports.handler.commands;
- commands.yank.isYank = true;
- commands.yankRotate.isYank = true;
- exports.killRing = {
- $data: [],
- add: function(str) {
- str && this.$data.push(str);
- if (this.$data.length > 30)
- this.$data.shift();
- },
- append: function(str) {
- var idx = this.$data.length - 1;
- var text = this.$data[idx] || "";
- if (str) text += str;
- if (text) this.$data[idx] = text;
- },
- get: function(n) {
- n = n || 1;
- return this.$data.slice(this.$data.length-n, this.$data.length).reverse().join('\n');
- },
- pop: function() {
- if (this.$data.length > 1)
- this.$data.pop();
- return this.get();
- },
- rotate: function() {
- this.$data.unshift(this.$data.pop());
- return this.get();
- }
- };
- });
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