mirror of
https://github.com/moodle/moodle.git
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342 lines
15 KiB
JavaScript
342 lines
15 KiB
JavaScript
// 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.courseid = args.courseid;
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this.contextid = args.contextid;
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this.env = args.env;
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// expand comments?
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if (args.autostart) {
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this.view(args.page);
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}
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// hide toggle link
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if (args.notoggle) {
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Y.one('#comment-link-'+this.client_id).setStyle('display', 'none');
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}
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// load comments
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Y.one('#comment-link-'+this.client_id).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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},
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post: function() {
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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.str.moodle.addcomment) {
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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: 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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var container = Y.one('#comment-list-'+cid);
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var result = 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 linktext = Y.one('#comment-link-text-'+cid);
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linktext.set('innerHTML', M.str.moodle.comments + ' ('+obj.count+')');
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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 YAHOO.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 YAHOO.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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params['env'] = '';
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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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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;
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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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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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'User-Agent': 'MoodleComment/3.0'
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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) {
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this.wait();
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}
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},
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render: 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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val = val.replace('___name___', list[i].username);
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if (list[i]['delete']||newcmt) {
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list[i].content = '<div class="comment-delete"><a href="###" id ="comment-delete-'+this.client_id+'-'+list[i].id+'" title="'+M.str.moodle.deletecomment+'"><img src="'+M.util.image_url('t/delete', 'core')+'" /></a></div>' + list[i].content;
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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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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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'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: function(id, ret, args) {
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var linktext = Y.one('#comment-link-text-'+scope.client_id);
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linktext.set('innerHTML', M.str.moodle.comments + ' ('+ret.count+')');
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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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var result = scope.render(ret.list);
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container.set('innerHTML', result.html);
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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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var params = {'commentid': id};
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function remove_dom(type, anmi, cmt) {
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cmt.remove();
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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;
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var attributes = {
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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 YAHOO.util.Anim(htmlid, attributes, 1, YAHOO.util.Easing.easeOut);
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anim.onComplete.subscribe(remove_dom, cmt, this);
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anim.animate();
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}
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}, true);
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},
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register_actions: function() {
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// add new comment
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Y.one('#comment-action-post-'+this.client_id).on('click', function(e) {
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e.preventDefault();
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this.post();
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return false;
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}, this);
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// cancel comment box
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var cancel = Y.one('#comment-action-cancel-'+this.client_id);
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if (cancel) {
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cancel.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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}
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},
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register_delete_buttons: function() {
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var scope = this;
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// page buttons
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Y.all('div.comment-content a').each(
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function(node, id) {
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var theid = node.get('id');
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var re = new RegExp("comment-delete-"+scope.client_id+"-(\\d+)", "i");
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var result = theid.match(re);
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if (result[1]) {
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Y.Event.purgeElement('#'+theid, false, 'click');
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}
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node.on('click', function(e, node) {
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if (result[1]) {
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this.dodelete(result[1]);
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}
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//this.load(result[1]);
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}, scope, node);
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}
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);
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},
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register_pagination: function() {
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var scope = this;
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// page buttons
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Y.all('#comment-pagination-'+this.client_id+' a').each(
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function(node, id) {
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node.on('click', function(e, node) {
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var id = node.get('id');
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var re = new RegExp("comment-page-"+this.client_id+"-(\\d+)", "i");
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var result = id.match(re);
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this.load(result[1]);
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}, scope, node);
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}
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);
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},
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view: function(page) {
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var container = Y.one('#comment-ctrl-'+this.client_id);
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var ta = Y.one('#dlg-content-'+this.client_id);
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var img = Y.one('#comment-img-'+this.client_id);
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var d = container.getStyle('display');
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if (d=='none'||d=='') {
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// show
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if (this.env != 'block_comments') {
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this.load(page);
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} else {
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this.register_delete_buttons();
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this.register_pagination();
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}
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container.setStyle('display', 'block');
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img.src=M.util.image_url('t/expanded', 'core');
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} else {
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// hide
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container.setStyle('display', 'none');
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img.src=M.util.image_url('t/collapsed', 'core');
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ta.set('value','');
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}
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//toggle_textarea.apply(ta, [false]);
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//// reset textarea size
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ta.on('click', function() {
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this.toggle_textarea(true);
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}, this)
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//ta.onkeypress = function() {
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//if (this.scrollHeight > this.clientHeight && !window.opera)
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//this.rows += 1;
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//}
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ta.on('blur', function() {
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this.toggle_textarea(false);
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}, this);
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this.register_actions();
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return false;
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},
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toggle_textarea: function(focus) {
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var t = Y.one('#dlg-content-'+this.client_id);
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if (focus) {
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if (t.get('value') == M.str.moodle.addcomment) {
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t.set('value', '');
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t.setStyle('color', 'black');
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}
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}else{
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if (t.get('value') == '') {
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t.set('value', M.str.moodle.addcomment);
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t.setStyle('color','grey');
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t.set('rows', 2);
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}
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}
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},
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wait: function() {
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var container = Y.one('#comment-list-'+this.client_id);
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container.set('innerHTML', '<div class="mdl-align"><img src="'+M.util.image_url('i/loading', 'core')+'" /></div>');
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}
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});
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new CommentHelper(options);
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}
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};
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