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comment.js
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comment.js
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// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Comment Helper
* @author Dongsheng Cai <[email protected]>
*/
M.core_comment = {
/**
* Initialize commenting system
*/
init: function(Y, options) {
var CommentHelper = function(args) {
CommentHelper.superclass.constructor.apply(this, arguments);
};
CommentHelper.NAME = "COMMENT";
CommentHelper.ATTRS = {
options: {},
lang: {}
};
Y.extend(CommentHelper, Y.Base, {
api: M.cfg.wwwroot+'/comment/comment_ajax.php',
initializer: function(args) {
var scope = this;
this.client_id = args.client_id;
this.itemid = args.itemid;
this.commentarea = args.commentarea;
this.component = args.component;
this.courseid = args.courseid;
this.contextid = args.contextid;
this.autostart = (args.autostart);
// Fail fast if the comments element cannot be found, such as in embedded-type views where blocks may be loaded
// then discarded.
if (!Y.one('#comment-ctrl-'+this.client_id)) {
return;
}
// expand comments?
if (this.autostart) {
this.view(args.page);
}
// load comments
var handle = Y.one('#comment-link-'+this.client_id);
// hide toggle link
if (handle) {
if (args.notoggle) {
handle.setStyle('display', 'none');
}
handle.on('click', function(e) {
e.preventDefault();
this.view(0);
return false;
}, this);
// Also handle space/enter key.
handle.on('key', function(e) {
e.preventDefault();
this.view(0);
return false;
}, '13,32', this);
}
scope.toggle_textarea(false);
},
post: function() {
var ta = Y.one('#dlg-content-'+this.client_id);
var scope = this;
var value = ta.get('value');
if (value && value != M.util.get_string('addcomment', 'moodle')) {
ta.set('disabled', true);
ta.setStyles({
'backgroundImage': 'url(' + M.util.image_url('i/loading_small', 'core') + ')',
'backgroundRepeat': 'no-repeat',
'backgroundPosition': 'center center'
});
var params = {'content': value};
this.request({
action: 'add',
scope: scope,
params: params,
callback: async function(id, obj, args) {
var scope = args.scope;
var cid = scope.client_id;
var ta = Y.one('#dlg-content-'+cid);
ta.set('value', '');
ta.set('disabled', false);
ta.setStyle('backgroundImage', 'none');
scope.toggle_textarea(false);
var container = Y.one('#comment-list-'+cid);
var result = await scope.render([obj], true);
var newcomment = Y.Node.create(result.html);
container.appendChild(newcomment);
var ids = result.ids;
var linkText = Y.one('#comment-link-text-' + cid);
if (linkText) {
linkText.set('innerHTML', M.util.get_string('commentscount', 'moodle', obj.count));
}
for(var i in ids) {
var attributes = {
color: { to: '#06e' },
backgroundColor: { to: '#FFE390' }
};
var anim = new Y.YUI2.util.ColorAnim(ids[i], attributes);
anim.animate();
}
scope.register_pagination();
scope.register_delete_buttons();
}
}, true);
} else {
var attributes = {
backgroundColor: { from: '#FFE390', to:'#FFFFFF' }
};
var anim = new Y.YUI2.util.ColorAnim('dlg-content-'+cid, attributes);
anim.animate();
}
},
request: function(args, noloading) {
var params = {};
var scope = this;
if (args['scope']) {
scope = args['scope'];
}
//params['page'] = args.page?args.page:'';
// the form element only accept certain file types
params['sesskey'] = M.cfg.sesskey;
params['action'] = args.action?args.action:'';
params['client_id'] = this.client_id;
params['itemid'] = this.itemid;
params['area'] = this.commentarea;
params['courseid'] = this.courseid;
params['contextid'] = this.contextid;
params['component'] = this.component;
if (args['params']) {
for (i in args['params']) {
params[i] = args['params'][i];
}
}
var cfg = {
method: 'POST',
on: {
complete: function(id,o,p) {
if (!o) {
alert('IO FATAL');
return false;
}
var data = Y.JSON.parse(o.responseText);
if (data.error) {
if (data.error == 'require_login') {
args.callback(id,data,p);
return true;
}
alert(data.error);
return false;
} else {
args.callback(id,data,p);
return true;
}
}
},
arguments: {
scope: scope
},
headers: {
'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
},
data: build_querystring(params)
};
if (args.form) {
cfg.form = args.form;
}
Y.io(this.api, cfg);
if (!noloading) {
this.wait();
}
},
render: async function(list, newcmt) {
var ret = {};
ret.ids = [];
var template = Y.one('#cmt-tmpl');
var html = '';
for(var i in list) {
var htmlid = 'comment-'+list[i].id+'-'+this.client_id;
var val = template.get('innerHTML');
if (list[i].profileurl) {
val = val.replace('___name___', '<a href="'+list[i].profileurl+'">'+list[i].fullname+'</a>');
} else {
val = val.replace('___name___', list[i].fullname);
}
if (list[i].delete || newcmt) {
list[i].clientid = this.client_id;
list[i].content += await this.renderDeleteIcon(list[i]);
}
val = val.replace('___time___', list[i].time);
val = val.replace('___picture___', list[i].avatar);
val = val.replace('___content___', list[i].content);
val = '<li id="'+htmlid+'">'+val+'</li>';
ret.ids.push(htmlid);
html = (val+html);
}
ret.html = html;
return ret;
},
renderDeleteIcon: async function(list) {
return new Promise(function(resolve) {
require(['core/templates', 'core/str'], (Templates, Str) => {
return Str.get_string('deletecommentbyon', 'moodle', {
user: list.fullname,
time: list.time
}).then(function(deleteStr) {
return Templates.renderPix('t/delete', 'core', deleteStr).then(function(deleteIcon) {
var deleteDiv = document.createElement('div');
deleteDiv.className = 'comment-delete';
var deleteLink = document.createElement('a');
deleteLink.href = '#';
deleteLink.role = 'button';
deleteLink.title = deleteStr;
deleteLink.id = `comment-delete-${list.clientid}-${list.id}`;
deleteLink.innerHTML = deleteIcon;
deleteDiv.appendChild(deleteLink);
resolve(deleteDiv.outerHTML);
return true;
});
});
});
});
},
load: function(page) {
var scope = this;
var container = Y.one('#comment-ctrl-'+this.client_id);
var params = {
'action': 'get',
'page': page
};
this.request({
scope: scope,
params: params,
callback: async function(id, ret, args) {
var linkText = Y.one('#comment-link-text-' + scope.client_id);
if (ret.count && linkText) {
linkText.set('innerHTML', M.util.get_string('commentscount', 'moodle', ret.count));
}
var container = Y.one('#comment-list-'+scope.client_id);
var pagination = Y.one('#comment-pagination-'+scope.client_id);
if (ret.pagination) {
pagination.set('innerHTML', ret.pagination);
} else {
//empty paging bar
pagination.set('innerHTML', '');
}
if (ret.error == 'require_login') {
var result = {};
result.html = M.util.get_string('commentsrequirelogin', 'moodle');
} else {
var result = await scope.render(ret.list);
}
container.set('innerHTML', result.html);
var img = Y.one('#comment-img-'+scope.client_id);
if (img) {
img.set('src', M.util.image_url('t/expanded', 'core'));
}
args.scope.register_pagination();
args.scope.register_delete_buttons();
}
});
},
dodelete: function(id) { // note: delete is a reserved word in javascript, chrome and safary do not like it at all here!
var scope = this,
cid = scope.client_id,
params = {'commentid': id};
function remove_dom(type, anim, cmt) {
cmt.remove();
var linkText = Y.one('#comment-link-text-' + cid),
comments = Y.all('#comment-list-' + cid + ' li');
if (linkText && comments) {
linkText.set('innerHTML', M.util.get_string('commentscount', 'moodle', comments.size()));
}
}
this.request({
action: 'delete',
scope: scope,
params: params,
callback: function(id, resp, args) {
var htmlid= 'comment-'+resp.commentid+'-'+resp.client_id;
var attributes = {
width:{to:0},
height:{to:0}
};
var cmt = Y.one('#'+htmlid);
cmt.setStyle('overflow', 'hidden');
var anim = new Y.YUI2.util.Anim(htmlid, attributes, 1, Y.YUI2.util.Easing.easeOut);
anim.onComplete.subscribe(remove_dom, cmt, this);
anim.animate();
}
}, true);
},
register_actions: function() {
// add new comment
var action_btn = Y.one('#comment-action-post-'+this.client_id);
if (action_btn) {
action_btn.on('click', function(e) {
e.preventDefault();
this.post();
return false;
}, this);
}
// cancel comment box
var cancel = Y.one('#comment-action-cancel-'+this.client_id);
if (cancel) {
cancel.on('click', function(e) {
e.preventDefault();
this.view(0);
return false;
}, this);
}
},
register_delete_buttons: function() {
var scope = this;
// page buttons
Y.all('div.comment-delete a').each(
function(node, id) {
var theid = node.get('id');
var parseid = new RegExp("comment-delete-"+scope.client_id+"-(\\d+)", "i");
var commentid = theid.match(parseid);
if (!commentid) {
return;
}
if (commentid[1]) {
Y.Event.purgeElement('#'+theid, false, 'click');
}
node.on('click', function(e) {
e.preventDefault();
if (commentid[1]) {
scope.dodelete(commentid[1]);
}
});
// Also handle space/enter key.
node.on('key', function(e) {
e.preventDefault();
if (commentid[1]) {
scope.dodelete(commentid[1]);
}
}, '13,32');
// 13 and 32 are the keycodes for space and enter.
}
);
},
register_pagination: function() {
var scope = this;
// page buttons
Y.all('#comment-pagination-'+this.client_id+' a').each(
function(node, id) {
node.on('click', function(e, node) {
e.preventDefault();
var id = node.get('id');
var re = new RegExp("comment-page-"+this.client_id+"-(\\d+)", "i");
var result = id.match(re);
this.load(result[1]);
}, scope, node);
}
);
},
view: function(page) {
var commenttoggler = Y.one('#comment-link-' + this.client_id);
var container = Y.one('#comment-ctrl-'+this.client_id);
var ta = Y.one('#dlg-content-'+this.client_id);
var img = Y.one('#comment-img-'+this.client_id);
var d = container.getStyle('display');
if (d=='none'||d=='') {
// show
if (!this.autostart) {
this.load(page);
} else {
this.register_delete_buttons();
this.register_pagination();
}
container.setStyle('display', 'block');
if (img) {
img.set('src', M.util.image_url('t/expanded', 'core'));
}
if (commenttoggler) {
commenttoggler.setAttribute('aria-expanded', 'true');
}
} else {
// hide
container.setStyle('display', 'none');
var collapsedimage = 't/collapsed'; // ltr mode
if ( Y.one(document.body).hasClass('dir-rtl') ) {
collapsedimage = 't/collapsed_rtl';
} else {
collapsedimage = 't/collapsed';
}
if (img) {
img.set('src', M.util.image_url(collapsedimage, 'core'));
}
if (ta) {
ta.set('value','');
}
if (commenttoggler) {
commenttoggler.setAttribute('aria-expanded', 'false');
}
}
if (ta) {
//toggle_textarea.apply(ta, [false]);
//// reset textarea size
ta.on('focus', function() {
this.toggle_textarea(true);
}, this);
//ta.onkeypress = function() {
//if (this.scrollHeight > this.clientHeight && !window.opera)
//this.rows += 1;
//}
ta.on('blur', function() {
this.toggle_textarea(false);
}, this);
}
this.register_actions();
return false;
},
toggle_textarea: function(focus) {
var t = Y.one('#dlg-content-'+this.client_id);
if (!t) {
return false;
}
if (focus) {
if (t.get('value') == M.util.get_string('addcomment', 'moodle')) {
t.set('value', '');
t.setStyle('color', 'black');
}
}else{
if (t.get('value') == '') {
t.set('value', M.util.get_string('addcomment', 'moodle'));
t.setStyle('color','grey');
t.set('rows', 2);
}
}
},
wait: function() {
var container = Y.one('#comment-list-'+this.client_id);
container.set('innerHTML', '<div class="mdl-align"><img src="'+M.util.image_url('i/loading_small', 'core')+'" /></div>');
}
});
new CommentHelper(options);
}
};