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