Proyectos de Subversion Moodle

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Rev 11 | | Comparar con el anterior | Ultima modificación | Ver Log |

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1 efrain 1
// 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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 * Comment Helper
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 * @author Dongsheng Cai <dongsheng@moodle.com>
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 */
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M.core_comment = {
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    /**
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     * Initialize commenting system
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     */
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    init: function(Y, options) {
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        var CommentHelper = function(args) {
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            CommentHelper.superclass.constructor.apply(this, arguments);
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        };
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        CommentHelper.NAME = "COMMENT";
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        CommentHelper.ATTRS = {
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            options: {},
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            lang: {}
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        };
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        Y.extend(CommentHelper, Y.Base, {
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            api: M.cfg.wwwroot+'/comment/comment_ajax.php',
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            initializer: function(args) {
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                var scope = this;
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                this.client_id = args.client_id;
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                this.itemid = args.itemid;
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                this.commentarea = args.commentarea;
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                this.component = args.component;
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                this.courseid = args.courseid;
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                this.contextid = args.contextid;
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                this.autostart = (args.autostart);
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                // Fail fast if the comments element cannot be found, such as in embedded-type views where blocks may be loaded
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                // then discarded.
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                if (!Y.one('#comment-ctrl-'+this.client_id)) {
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                    return;
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                }
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                // expand comments?
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                if (this.autostart) {
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                    this.view(args.page);
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                }
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                // load comments
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                var handle = Y.one('#comment-link-'+this.client_id);
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                // hide toggle link
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                if (handle) {
57
                    if (args.notoggle) {
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                        handle.setStyle('display', 'none');
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                    }
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                    handle.on('click', function(e) {
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                        e.preventDefault();
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                        this.view(0);
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                        return false;
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                    }, this);
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                    // Also handle space/enter key.
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                    handle.on('key', function(e) {
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                        e.preventDefault();
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                        this.view(0);
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                        return false;
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                    }, '13,32', this);
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                }
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                scope.toggle_textarea(false);
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            },
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            post: function() {
1441 ariadna 75
                var container = Y.one('#comment-list-'+this.client_id);
1 efrain 76
                var ta = Y.one('#dlg-content-'+this.client_id);
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                var scope = this;
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                var value = ta.get('value');
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                if (value && value != M.util.get_string('addcomment', 'moodle')) {
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                    ta.set('disabled', true);
1441 ariadna 81
                    var spinner = M.util.add_spinner(Y, container);
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                    spinner.show();
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                    var params = {'content': value};
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                    this.request({
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                        action: 'add',
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                        scope: scope,
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                        params: params,
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                        callback: async function(id, obj, args) {
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                            var scope = args.scope;
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                            var cid = scope.client_id;
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                            var ta = Y.one('#dlg-content-'+cid);
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                            ta.set('value', '');
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                            ta.set('disabled', false);
1441 ariadna 94
                            spinner.remove();
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                            scope.toggle_textarea(false);
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                            var container = Y.one('#comment-list-'+cid);
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                            var result = await scope.render([obj], true);
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                            var newcomment = Y.Node.create(result.html);
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                            container.appendChild(newcomment);
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                            var ids = result.ids;
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                            var linkTextCount = Y.one('#comment-link-text-' + cid + ' .comment-link-count');
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                            if (linkTextCount) {
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                                linkTextCount.set('innerHTML', obj.count);
1 efrain 104
                            }
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                            for(var i in ids) {
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                                var attributes = {
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                                    color: { to: '#06e' },
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                                    backgroundColor: { to: '#FFE390' }
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                                };
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                                var anim = new Y.YUI2.util.ColorAnim(ids[i], attributes);
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                                anim.animate();
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                            }
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                            scope.register_pagination();
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                            scope.register_delete_buttons();
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                        }
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                    }, true);
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                } else {
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                    var attributes = {
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                        backgroundColor: { from: '#FFE390', to:'#FFFFFF' }
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                    };
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                    var anim = new Y.YUI2.util.ColorAnim('dlg-content-'+cid, attributes);
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                    anim.animate();
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                }
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            },
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            request: function(args, noloading) {
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                var params = {};
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                var scope = this;
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                if (args['scope']) {
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                    scope = args['scope'];
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                }
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                //params['page'] = args.page?args.page:'';
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                // the form element only accept certain file types
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                params['sesskey']   = M.cfg.sesskey;
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                params['action']    = args.action?args.action:'';
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                params['client_id'] = this.client_id;
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                params['itemid']    = this.itemid;
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                params['area']      = this.commentarea;
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                params['courseid']  = this.courseid;
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                params['contextid'] = this.contextid;
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                params['component'] = this.component;
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                if (args['params']) {
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                    for (i in args['params']) {
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                        params[i] = args['params'][i];
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                    }
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                }
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                var cfg = {
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                    method: 'POST',
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                    on: {
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                        complete: function(id,o,p) {
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                            if (!o) {
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                                alert('IO FATAL');
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                                return false;
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                            }
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                            var data = Y.JSON.parse(o.responseText);
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                            if (data.error) {
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                                if (data.error == 'require_login') {
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                                    args.callback(id,data,p);
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                                    return true;
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                                }
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                                alert(data.error);
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                                return false;
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                            } else {
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                                args.callback(id,data,p);
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                                return true;
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                            }
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                        }
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                    },
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                    arguments: {
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                        scope: scope
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                    },
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                    headers: {
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                        'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
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                    },
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                    data: build_querystring(params)
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                };
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                if (args.form) {
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                    cfg.form = args.form;
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                }
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                Y.io(this.api, cfg);
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                if (!noloading) {
181
                    this.wait();
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                }
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            },
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            render: async function(list, newcmt) {
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                var ret = {};
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                ret.ids = [];
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                var template = Y.one('#cmt-tmpl');
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                var html = '';
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                for(var i in list) {
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                    var htmlid = 'comment-'+list[i].id+'-'+this.client_id;
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                    var val = template.get('innerHTML');
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                    if (list[i].profileurl) {
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                        val = val.replace('___name___', '<a href="'+list[i].profileurl+'">'+list[i].fullname+'</a>');
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                    } else {
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                        val = val.replace('___name___', list[i].fullname);
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                    }
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                    if (list[i].delete || newcmt) {
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                        list[i].clientid = this.client_id;
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                        list[i].content += await this.renderDeleteIcon(list[i]);
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                    }
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                    val = val.replace('___time___', list[i].time);
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                    val = val.replace('___picture___', list[i].avatar);
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                    val = val.replace('___content___', list[i].content);
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                    val = '<li id="'+htmlid+'">'+val+'</li>';
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                    ret.ids.push(htmlid);
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                    html = (val+html);
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                }
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                ret.html = html;
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                return ret;
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            },
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            renderDeleteIcon: async function(list) {
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                return new Promise(function(resolve) {
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                    require(['core/templates', 'core/str'], (Templates, Str) => {
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                        return Str.get_string('deletecommentbyon', 'moodle', {
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                            user: list.fullname,
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                            time: list.time
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                        }).then(function(deleteStr) {
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                            return Templates.renderPix('t/delete', 'core', deleteStr).then(function(deleteIcon) {
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                                var deleteDiv = document.createElement('div');
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                                deleteDiv.className = 'comment-delete';
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                                var deleteLink = document.createElement('a');
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                                deleteLink.href = '#';
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                                deleteLink.role = 'button';
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                                deleteLink.title = deleteStr;
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                                deleteLink.id = `comment-delete-${list.clientid}-${list.id}`;
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                                deleteLink.innerHTML = deleteIcon;
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229
                                deleteDiv.appendChild(deleteLink);
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                                resolve(deleteDiv.outerHTML);
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233
                                return true;
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                            });
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                        });
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                    });
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                });
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            },
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            load: function(page) {
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                var scope = this;
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                var container = Y.one('#comment-ctrl-'+this.client_id);
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                var params = {
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                    'action': 'get',
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                    'page': page
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                };
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                this.request({
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                    scope: scope,
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                    params: params,
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                    callback: async function(id, ret, args) {
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                        var linkTextCount = Y.one('#comment-link-text-' + scope.client_id + ' .comment-link-count');
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                        if (linkTextCount) {
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                            linkTextCount.set('innerHTML', ret.count);
1 efrain 253
                        }
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                        var container = Y.one('#comment-list-'+scope.client_id);
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                        var pagination = Y.one('#comment-pagination-'+scope.client_id);
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                        if (ret.pagination) {
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                            pagination.set('innerHTML', ret.pagination);
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                        } else {
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                            //empty paging bar
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                            pagination.set('innerHTML', '');
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                        }
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                        if (ret.error == 'require_login') {
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                            var result = {};
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                            result.html = M.util.get_string('commentsrequirelogin', 'moodle');
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                        } else {
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                            var result = await scope.render(ret.list);
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                        }
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                        container.set('innerHTML', result.html);
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                        var img = Y.one('#comment-img-'+scope.client_id);
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                        if (img) {
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                            img.set('src', M.util.image_url('t/expanded', 'core'));
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                        }
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                        args.scope.register_pagination();
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                        args.scope.register_delete_buttons();
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                    }
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                });
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            },
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            dodelete: function(id) { // note: delete is a reserved word in javascript, chrome and safary do not like it at all here!
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                var scope = this,
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                    cid = scope.client_id,
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                    params = {'commentid': id};
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                function remove_dom(type, anim, cmt) {
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                    cmt.remove();
11 efrain 285
                    var linkTextCount = Y.one('#comment-link-text-' + cid + ' .comment-link-count'),
1 efrain 286
                        comments = Y.all('#comment-list-' + cid + ' li');
11 efrain 287
                    if (linkTextCount) {
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                        linkTextCount.set('innerHTML', comments.size());
1 efrain 289
                    }
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                }
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                this.request({
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                    action: 'delete',
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                    scope: scope,
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                    params: params,
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                    callback: function(id, resp, args) {
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                        var htmlid= 'comment-'+resp.commentid+'-'+resp.client_id;
297
                        var attributes = {
298
                            width:{to:0},
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                            height:{to:0}
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                        };
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                        var cmt = Y.one('#'+htmlid);
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                        cmt.setStyle('overflow', 'hidden');
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                        var anim = new Y.YUI2.util.Anim(htmlid, attributes, 1, Y.YUI2.util.Easing.easeOut);
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                        anim.onComplete.subscribe(remove_dom, cmt, this);
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                        anim.animate();
306
                    }
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                }, true);
308
            },
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            register_actions: function() {
310
                // add new comment
311
                var action_btn = Y.one('#comment-action-post-'+this.client_id);
312
                if (action_btn) {
313
                    action_btn.on('click', function(e) {
314
                        e.preventDefault();
315
                        this.post();
316
                        return false;
317
                    }, this);
318
                }
319
                // cancel comment box
320
                var cancel = Y.one('#comment-action-cancel-'+this.client_id);
321
                if (cancel) {
322
                    cancel.on('click', function(e) {
323
                        e.preventDefault();
324
                        this.view(0);
325
                        return false;
326
                    }, this);
327
                }
328
            },
329
            register_delete_buttons: function() {
330
                var scope = this;
331
                // page buttons
332
                Y.all('div.comment-delete a').each(
333
                    function(node, id) {
334
                        var theid = node.get('id');
335
                        var parseid = new RegExp("comment-delete-"+scope.client_id+"-(\\d+)", "i");
336
                        var commentid = theid.match(parseid);
337
                        if (!commentid) {
338
                            return;
339
                        }
340
                        if (commentid[1]) {
341
                            Y.Event.purgeElement('#'+theid, false, 'click');
342
                        }
343
                        node.on('click', function(e) {
344
                            e.preventDefault();
345
                            if (commentid[1]) {
346
                                scope.dodelete(commentid[1]);
347
                            }
348
                        });
349
                        // Also handle space/enter key.
350
                        node.on('key', function(e) {
351
                            e.preventDefault();
352
                            if (commentid[1]) {
353
                                scope.dodelete(commentid[1]);
354
                            }
355
                        }, '13,32');
356
                        // 13 and 32 are the keycodes for space and enter.
357
                    }
358
                );
359
            },
360
            register_pagination: function() {
361
                var scope = this;
362
                // page buttons
363
                Y.all('#comment-pagination-'+this.client_id+' a').each(
364
                    function(node, id) {
365
                        node.on('click', function(e, node) {
366
                            e.preventDefault();
367
                            var id = node.get('id');
368
                            var re = new RegExp("comment-page-"+this.client_id+"-(\\d+)", "i");
369
                            var result = id.match(re);
370
                            this.load(result[1]);
371
                        }, scope, node);
372
                    }
373
                );
374
            },
375
            view: function(page) {
376
                var commenttoggler = Y.one('#comment-link-' + this.client_id);
377
                var container = Y.one('#comment-ctrl-'+this.client_id);
378
                var ta = Y.one('#dlg-content-'+this.client_id);
379
                var img = Y.one('#comment-img-'+this.client_id);
380
                var d = container.getStyle('display');
381
                if (d=='none'||d=='') {
382
                    // show
383
                    if (!this.autostart) {
384
                        this.load(page);
385
                    } else {
386
                        this.register_delete_buttons();
387
                        this.register_pagination();
388
                    }
389
                    container.setStyle('display', 'block');
390
                    if (img) {
391
                        img.set('src', M.util.image_url('t/expanded', 'core'));
392
                    }
393
                    if (commenttoggler) {
394
                        commenttoggler.setAttribute('aria-expanded', 'true');
395
                    }
396
                } else {
397
                    // hide
398
                    container.setStyle('display', 'none');
399
                    var collapsedimage = 't/collapsed'; // ltr mode
400
                    if ( Y.one(document.body).hasClass('dir-rtl') ) {
401
                        collapsedimage = 't/collapsed_rtl';
402
                    }
403
                    if (img) {
404
                        img.set('src', M.util.image_url(collapsedimage, 'core'));
405
                    }
406
                    if (ta) {
407
                        ta.set('value','');
408
                    }
409
                    if (commenttoggler) {
410
                        commenttoggler.setAttribute('aria-expanded', 'false');
411
                    }
412
                }
413
                if (ta) {
414
                    //toggle_textarea.apply(ta, [false]);
415
                    //// reset textarea size
416
                    ta.on('focus', function() {
417
                        this.toggle_textarea(true);
418
                    }, this);
419
                    //ta.onkeypress = function() {
420
                        //if (this.scrollHeight > this.clientHeight && !window.opera)
421
                            //this.rows += 1;
422
                    //}
423
                    ta.on('blur', function() {
424
                        this.toggle_textarea(false);
425
                    }, this);
426
                }
427
                this.register_actions();
428
                return false;
429
            },
430
            toggle_textarea: function(focus) {
431
                var t = Y.one('#dlg-content-'+this.client_id);
432
                if (!t) {
433
                    return false;
434
                }
435
                if (focus) {
436
                    if (t.get('value') == M.util.get_string('addcomment', 'moodle')) {
437
                        t.set('value', '');
438
                        t.setStyle('color', 'black');
439
                    }
440
                }else{
441
                    if (t.get('value') == '') {
442
                        t.set('value', M.util.get_string('addcomment', 'moodle'));
443
                        t.setStyle('color','grey');
444
                        t.set('rows', 2);
445
                    }
446
                }
447
            },
448
            wait: function() {
449
                var container = Y.one('#comment-list-'+this.client_id);
1441 ariadna 450
                container.set('innerHTML', '');
451
                M.util.add_spinner(Y, container).show();
1 efrain 452
            }
453
        });
454
 
455
        new CommentHelper(options);
456
    }
457
};