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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/*
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* @package atto_subscript
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* @copyright 2014 Rosiana Wijaya <rwijaya@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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/**
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* @module moodle-atto_subscript-button
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*/
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/**
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* Atto text editor subscript plugin.
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*
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* @namespace M.atto_subscript
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* @class button
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* @extends M.editor_atto.EditorPlugin
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*/
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Y.namespace('M.atto_subscript').Button = Y.Base.create('button', Y.M.editor_atto.EditorPlugin, [], {
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/**
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* A rangy object to alter CSS classes.
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*
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* @property _subscriptApplier
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* @type Object
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* @private
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*/
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_subscriptApplier: null,
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/**
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* A rangy object to alter CSS classes.
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*
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* @property _superscriptApplier
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* @type Object
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* @private
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*/
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_superscriptApplier: null,
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initializer: function() {
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this.addButton({
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buttonName: 'subscript',
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callback: this.toggleSubscript,
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icon: 'e/subscript',
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inlineFormat: true,
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// Watch the following tags and add/remove highlighting as appropriate:
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tags: 'sub'
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});
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this._subscriptApplier = window.rangy.createClassApplier("editor-subscript");
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this._superscriptApplier = window.rangy.createClassApplier("editor-superscript");
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},
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/**
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* Toggle subscripts in selection
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*
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* @method toggleSubscript
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*/
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toggleSubscript: function() {
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// Replace all the sub and sup tags.
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this.get('host').changeToCSS('sup', 'editor-superscript');
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this.get('host').changeToCSS('sub', 'editor-subscript');
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// Remove all superscripts inselection and toggle subscript.
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this._superscriptApplier.undoToSelection();
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this._subscriptApplier.toggleSelection();
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// Replace CSS classes with tags.
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this.get('host').changeToTags('editor-subscript', 'sub');
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this.get('host').changeToTags('editor-superscript', 'sup');
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}
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});
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