375 lines
11 KiB
JavaScript
375 lines
11 KiB
JavaScript
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/* ***** 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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ace.define('ace/keyboard/emacs', ['require', 'exports', 'module' , 'ace/lib/dom', 'ace/keyboard/hash_handler', 'ace/lib/keys'], function(require, exports, module) {
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var dom = require("../lib/dom");
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var screenToTextBlockCoordinates = function(pageX, pageY) {
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var canvasPos = this.scroller.getBoundingClientRect();
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var col = Math.floor(
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(pageX + this.scrollLeft - canvasPos.left - this.$padding - dom.getPageScrollLeft()) / this.characterWidth
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);
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var row = Math.floor(
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(pageY + this.scrollTop - canvasPos.top - dom.getPageScrollTop()) / this.lineHeight
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);
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return this.session.screenToDocumentPosition(row, col);
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};
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var HashHandler = require("./hash_handler").HashHandler;
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exports.handler = new HashHandler();
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var initialized = false;
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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: 2px rgba(50,250,50,0.8) solid!important;\
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-moz-box-sizing: border-box!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_cursor.ace_hidden{\
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opacity: 1;\
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background-color: transparent;\
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}\
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.emacs-mode .ace_cursor.ace_overwrite {\
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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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editor.renderer.screenToTextCoordinates = screenToTextBlockCoordinates;
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editor.setStyle("emacs-mode");
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};
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exports.handler.detach = function(editor) {
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delete editor.renderer.screenToTextCoordinates;
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editor.unsetStyle("emacs-mode");
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};
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var keys = require("../lib/keys").KEY_MODS;
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var eMods = {
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C: "ctrl", S: "shift", M: "alt"
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};
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["S-C-M", "S-C", "S-M", "C-M", "S", "C", "M"].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.bindKey = function(key, command) {
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if (!key)
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return;
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var ckb = this.commmandKeyBinding;
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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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keyPart = keyPart.split(" ")[0];
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if (!ckb[keyPart])
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ckb[keyPart] = "null";
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}, this);
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};
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exports.handler.handleKeyboard = function(data, hashId, key, keyCode) {
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if (hashId == -1) {
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if (data.count) {
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var str = 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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if (key == "\x00")
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return;
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var modifier = eMods[hashId];
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if (modifier == "c-" || data.universalArgument) {
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var count = parseInt(key[key.length - 1]);
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if (count) {
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data.count = count;
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return {command: "null"};
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}
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}
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data.universalArgument = false;
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if (modifier)
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key = modifier + key;
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if (data.keyChain)
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key = data.keyChain += " " + key;
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var command = this.commmandKeyBinding[key];
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data.keyChain = command == "null" ? key : "";
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if (!command)
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return;
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if (command == "null")
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return {command: "null"};
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if (command == "universalArgument") {
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data.universalArgument = true;
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return {command: "null"};
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}
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if (typeof command != "string") {
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var args = command.args;
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command = command.command;
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}
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if (typeof command == "string") {
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command = this.commands[command] || data.editor.commands.commands[command];
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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 (data.count) {
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var count = data.count;
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data.count = 0;
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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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}
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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" : "golineup",
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"Down|C-n" : "golinedown",
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"Left|C-b" : "gotoleft",
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"Right|C-f" : "gotoright",
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"C-Left|M-b" : "gotowordleft",
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"C-Right|M-f" : "gotowordright",
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"Home|C-a" : "gotolinestart",
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"End|C-e" : "gotolineend",
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"C-Home|S-M-,": "gotostart",
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"C-End|S-M-." : "gotoend",
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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": "gotopagedown",
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"C-Up": "gotopageup",
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"PageDown|C-v": "gotopagedown",
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"PageUp|M-v": "gotopageup",
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"S-C-Down": "selectpagedown",
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"S-C-Up": "selectpageup",
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"C-s": "findnext",
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"C-r": "findprevious",
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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": "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",
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"M-l": "tolowercase",
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"M-/": "autocomplete",
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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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// todo
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// "M-x" "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: function() {
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},
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exchangePointAndMark: {
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exec: function(editor) {
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var range = editor.selection.getRange();
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editor.selection.setSelectionRange(range, !editor.selection.isBackwards());
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},
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readonly: true,
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multiselectAction: "forEach"
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},
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killWord: {
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exec: function(editor, dir) {
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editor.clearSelection();
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if (dir == "left")
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editor.selection.selectWordLeft();
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else
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editor.selection.selectWordRight();
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var range = editor.getSelectionRange();
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var text = editor.session.getTextRange(range);
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exports.killRing.add(text);
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editor.session.remove(range);
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editor.clearSelection();
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},
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multiselectAction: "forEach"
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},
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killLine: function(editor) {
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editor.selection.selectLine();
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var range = editor.getSelectionRange();
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var text = editor.session.getTextRange(range);
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exports.killRing.add(text);
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editor.session.remove(range);
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editor.clearSelection();
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},
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yank: function(editor) {
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editor.onPaste(exports.killRing.get());
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editor.keyBinding.$data.lastCommand = "yank";
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},
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yankRotate: function(editor) {
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if (editor.keyBinding.$data.lastCommand != "yank")
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return;
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editor.undo();
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editor.onPaste(exports.killRing.rotate());
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editor.keyBinding.$data.lastCommand = "yank";
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},
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killRegion: function(editor) {
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exports.killRing.add(editor.getCopyText());
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editor.commands.byName.cut.exec(editor);
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},
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killRingSave: function(editor) {
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exports.killRing.add(editor.getCopyText());
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}
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});
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var commands = exports.handler.commands;
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commands.yank.isYank = true;
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commands.yankRotate.isYank = true;
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exports.killRing = {
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$data: [],
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add: function(str) {
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str && this.$data.push(str);
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if (this.$data.length > 30)
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this.$data.shift();
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},
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get: function() {
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return this.$data[this.$data.length - 1] || "";
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},
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pop: function() {
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if (this.$data.length > 1)
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this.$data.pop();
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return this.get();
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},
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rotate: function() {
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this.$data.unshift(this.$data.pop());
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return this.get();
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}
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};
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});
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