79 lines
2.5 KiB
JavaScript
79 lines
2.5 KiB
JavaScript
// Copyright 2008 The Closure Library Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS-IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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* @fileoverview Abstract Editor plugin class to handle tab keys. Has one
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* abstract method which should be overriden to handle a tab key press.
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*
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* @author robbyw@google.com (Robby Walker)
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* @author ajp@google.com (Andy Perelson)
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*/
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goog.provide('goog.editor.plugins.AbstractTabHandler');
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goog.require('goog.editor.Plugin');
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goog.require('goog.events.KeyCodes');
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/**
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* Plugin to handle tab keys. Specific tab behavior defined by subclasses.
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*
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* @constructor
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* @extends {goog.editor.Plugin}
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*/
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goog.editor.plugins.AbstractTabHandler = function() {
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goog.editor.Plugin.call(this);
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};
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goog.inherits(goog.editor.plugins.AbstractTabHandler, goog.editor.Plugin);
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/** @override */
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goog.editor.plugins.AbstractTabHandler.prototype.getTrogClassId =
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goog.abstractMethod;
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/** @override */
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goog.editor.plugins.AbstractTabHandler.prototype.handleKeyboardShortcut =
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function(e, key, isModifierPressed) {
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// If a dialog doesn't have selectable field, Moz grabs the event and
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// performs actions in editor window. This solves that problem and allows
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// the event to be passed on to proper handlers.
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if (goog.userAgent.GECKO && this.getFieldObject().inModalMode()) {
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return false;
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}
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// Don't handle Ctrl+Tab since the user is most likely trying to switch
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// browser tabs. See bug 1305086.
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// FF3 on Mac sends Ctrl-Tab to trogedit and we end up inserting a tab, but
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// then it also switches the tabs. See bug 1511681. Note that we don't use
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// isModifierPressed here since isModifierPressed is true only if metaKey
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// is true on Mac.
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if (e.keyCode == goog.events.KeyCodes.TAB && !e.metaKey && !e.ctrlKey) {
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return this.handleTabKey(e);
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}
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return false;
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};
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/**
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* Handle a tab key press.
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* @param {goog.events.Event} e The key event.
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* @return {boolean} Whether this event was handled by this plugin.
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* @protected
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*/
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goog.editor.plugins.AbstractTabHandler.prototype.handleTabKey =
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goog.abstractMethod;
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