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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 event = require("../lib/event");
- var KeyBinding = function(editor) {
- this.$editor = editor;
- this.$data = {editor: editor};
- this.$handlers = [];
- this.setDefaultHandler(editor.commands);
- };
- (function() {
- this.setDefaultHandler = function(kb) {
- this.removeKeyboardHandler(this.$defaultHandler);
- this.$defaultHandler = kb;
- this.addKeyboardHandler(kb, 0);
- };
- this.setKeyboardHandler = function(kb) {
- var h = this.$handlers;
- if (h[h.length - 1] == kb)
- return;
- while (h[h.length - 1] && h[h.length - 1] != this.$defaultHandler)
- this.removeKeyboardHandler(h[h.length - 1]);
- this.addKeyboardHandler(kb, 1);
- };
- this.addKeyboardHandler = function(kb, pos) {
- if (!kb)
- return;
- if (typeof kb == "function" && !kb.handleKeyboard)
- kb.handleKeyboard = kb;
- var i = this.$handlers.indexOf(kb);
- if (i != -1)
- this.$handlers.splice(i, 1);
- if (pos == undefined)
- this.$handlers.push(kb);
- else
- this.$handlers.splice(pos, 0, kb);
- if (i == -1 && kb.attach)
- kb.attach(this.$editor);
- };
- this.removeKeyboardHandler = function(kb) {
- var i = this.$handlers.indexOf(kb);
- if (i == -1)
- return false;
- this.$handlers.splice(i, 1);
- kb.detach && kb.detach(this.$editor);
- return true;
- };
- this.getKeyboardHandler = function() {
- return this.$handlers[this.$handlers.length - 1];
- };
-
- this.getStatusText = function() {
- var data = this.$data;
- var editor = data.editor;
- return this.$handlers.map(function(h) {
- return h.getStatusText && h.getStatusText(editor, data) || "";
- }).filter(Boolean).join(" ");
- };
- this.$callKeyboardHandlers = function(hashId, keyString, keyCode, e) {
- var toExecute;
- var success = false;
- var commands = this.$editor.commands;
- for (var i = this.$handlers.length; i--;) {
- toExecute = this.$handlers[i].handleKeyboard(
- this.$data, hashId, keyString, keyCode, e
- );
- if (!toExecute || !toExecute.command)
- continue;
-
- // allow keyboardHandler to consume keys
- if (toExecute.command == "null") {
- success = true;
- } else {
- success = commands.exec(toExecute.command, this.$editor, toExecute.args, e);
- }
- // do not stop input events to not break repeating
- if (success && e && hashId != -1 &&
- toExecute.passEvent != true && toExecute.command.passEvent != true
- ) {
- event.stopEvent(e);
- }
- if (success)
- break;
- }
-
- if (!success && hashId == -1) {
- toExecute = {command: "insertstring"};
- success = commands.exec("insertstring", this.$editor, keyString);
- }
-
- if (success)
- this.$editor._signal("keyboardActivity", toExecute);
-
- return success;
- };
- this.onCommandKey = function(e, hashId, keyCode) {
- var keyString = keyUtil.keyCodeToString(keyCode);
- this.$callKeyboardHandlers(hashId, keyString, keyCode, e);
- };
- this.onTextInput = function(text) {
- this.$callKeyboardHandlers(-1, text);
- };
- }).call(KeyBinding.prototype);
- exports.KeyBinding = KeyBinding;
- });
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