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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 keyUtil = require("../lib/keys");
- var useragent = require("../lib/useragent");
- var KEY_MODS = keyUtil.KEY_MODS;
- function HashHandler(config, platform) {
- this.platform = platform || (useragent.isMac ? "mac" : "win");
- this.commands = {};
- this.commandKeyBinding = {};
- this.addCommands(config);
- this.$singleCommand = true;
- }
- function MultiHashHandler(config, platform) {
- HashHandler.call(this, config, platform);
- this.$singleCommand = false;
- }
- MultiHashHandler.prototype = HashHandler.prototype;
- (function() {
-
- this.addCommand = function(command) {
- if (this.commands[command.name])
- this.removeCommand(command);
- this.commands[command.name] = command;
- if (command.bindKey)
- this._buildKeyHash(command);
- };
- this.removeCommand = function(command, keepCommand) {
- var name = command && (typeof command === 'string' ? command : command.name);
- command = this.commands[name];
- if (!keepCommand)
- delete this.commands[name];
- // exhaustive search is brute force but since removeCommand is
- // not a performance critical operation this should be OK
- var ckb = this.commandKeyBinding;
- for (var keyId in ckb) {
- var cmdGroup = ckb[keyId];
- if (cmdGroup == command) {
- delete ckb[keyId];
- } else if (Array.isArray(cmdGroup)) {
- var i = cmdGroup.indexOf(command);
- if (i != -1) {
- cmdGroup.splice(i, 1);
- if (cmdGroup.length == 1)
- ckb[keyId] = cmdGroup[0];
- }
- }
- }
- };
- this.bindKey = function(key, command, position) {
- if (typeof key == "object" && key) {
- if (position == undefined)
- position = key.position;
- key = key[this.platform];
- }
- if (!key)
- return;
- if (typeof command == "function")
- return this.addCommand({exec: command, bindKey: key, name: command.name || key});
-
- key.split("|").forEach(function(keyPart) {
- var chain = "";
- if (keyPart.indexOf(" ") != -1) {
- var parts = keyPart.split(/\s+/);
- keyPart = parts.pop();
- parts.forEach(function(keyPart) {
- var binding = this.parseKeys(keyPart);
- var id = KEY_MODS[binding.hashId] + binding.key;
- chain += (chain ? " " : "") + id;
- this._addCommandToBinding(chain, "chainKeys");
- }, this);
- chain += " ";
- }
- var binding = this.parseKeys(keyPart);
- var id = KEY_MODS[binding.hashId] + binding.key;
- this._addCommandToBinding(chain + id, command, position);
- }, this);
- };
-
- function getPosition(command) {
- return typeof command == "object" && command.bindKey
- && command.bindKey.position || 0;
- }
- this._addCommandToBinding = function(keyId, command, position) {
- var ckb = this.commandKeyBinding, i;
- if (!command) {
- delete ckb[keyId];
- } else if (!ckb[keyId] || this.$singleCommand) {
- ckb[keyId] = command;
- } else {
- if (!Array.isArray(ckb[keyId])) {
- ckb[keyId] = [ckb[keyId]];
- } else if ((i = ckb[keyId].indexOf(command)) != -1) {
- ckb[keyId].splice(i, 1);
- }
- if (typeof position != "number") {
- if (position || command.isDefault)
- position = -100;
- else
- position = getPosition(command);
- }
- var commands = ckb[keyId];
- for (i = 0; i < commands.length; i++) {
- var other = commands[i];
- var otherPos = getPosition(other);
- if (otherPos > position)
- break;
- }
- commands.splice(i, 0, command);
- }
- };
- this.addCommands = function(commands) {
- commands && Object.keys(commands).forEach(function(name) {
- var command = commands[name];
- if (!command)
- return;
-
- if (typeof command === "string")
- return this.bindKey(command, name);
- if (typeof command === "function")
- command = { exec: command };
- if (typeof command !== "object")
- return;
- if (!command.name)
- command.name = name;
- this.addCommand(command);
- }, this);
- };
- this.removeCommands = function(commands) {
- Object.keys(commands).forEach(function(name) {
- this.removeCommand(commands[name]);
- }, this);
- };
- this.bindKeys = function(keyList) {
- Object.keys(keyList).forEach(function(key) {
- this.bindKey(key, keyList[key]);
- }, this);
- };
- this._buildKeyHash = function(command) {
- this.bindKey(command.bindKey, command);
- };
- // accepts keys in the form ctrl+Enter or ctrl-Enter
- // keys without modifiers or shift only
- this.parseKeys = function(keys) {
- var parts = keys.toLowerCase().split(/[\-\+]([\-\+])?/).filter(function(x){return x});
- var key = parts.pop();
- var keyCode = keyUtil[key];
- if (keyUtil.FUNCTION_KEYS[keyCode])
- key = keyUtil.FUNCTION_KEYS[keyCode].toLowerCase();
- else if (!parts.length)
- return {key: key, hashId: -1};
- else if (parts.length == 1 && parts[0] == "shift")
- return {key: key.toUpperCase(), hashId: -1};
- var hashId = 0;
- for (var i = parts.length; i--;) {
- var modifier = keyUtil.KEY_MODS[parts[i]];
- if (modifier == null) {
- if (typeof console != "undefined")
- console.error("invalid modifier " + parts[i] + " in " + keys);
- return false;
- }
- hashId |= modifier;
- }
- return {key: key, hashId: hashId};
- };
- this.findKeyCommand = function findKeyCommand(hashId, keyString) {
- var key = KEY_MODS[hashId] + keyString;
- return this.commandKeyBinding[key];
- };
- this.handleKeyboard = function(data, hashId, keyString, keyCode) {
- if (keyCode < 0) return;
- var key = KEY_MODS[hashId] + keyString;
- var command = this.commandKeyBinding[key];
- if (data.$keyChain) {
- data.$keyChain += " " + key;
- command = this.commandKeyBinding[data.$keyChain] || command;
- }
-
- if (command) {
- if (command == "chainKeys" || command[command.length - 1] == "chainKeys") {
- data.$keyChain = data.$keyChain || key;
- return {command: "null"};
- }
- }
-
- if (data.$keyChain) {
- if ((!hashId || hashId == 4) && keyString.length == 1)
- data.$keyChain = data.$keyChain.slice(0, -key.length - 1); // wait for input
- else if (hashId == -1 || keyCode > 0)
- data.$keyChain = ""; // reset keyChain
- }
- return {command: command};
- };
-
- this.getStatusText = function(editor, data) {
- return data.$keyChain || "";
- };
- }).call(HashHandler.prototype);
- exports.HashHandler = HashHandler;
- exports.MultiHashHandler = MultiHashHandler;
- });
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