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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/>.
/**
* Action selector.
*
* To handle 'save' events use: actionselector.on('save')
* This will receive the information to display in popup.
* The actions have the format [{'text': sometext, 'value' : somevalue}].
*
* @package tool_lp
* @copyright 2016 Serge Gauthier - <serge.gauthier.2@umontreal.ca>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
define(['jquery',
'core/notification',
'core/ajax',
'core/templates',
'tool_lp/dialogue',
'tool_lp/event_base'],
function($, Notification, Ajax, Templates, Dialogue, EventBase) {
/**
* Action selector class.
* @param {String} title The title of popup.
* @param {String} message The message to display.
* @param {object} actions The actions that can be selected.
* @param {String} confirm Text for confirm button.
* @param {String} cancel Text for cancel button.
*/
var ActionSelector = function(title, message, actions, confirm, cancel) {
var self = this;
EventBase.prototype.constructor.apply(this, []);
self._title = title;
self._message = message;
self._actions = actions;
self._confirm = confirm;
self._cancel = cancel;
self._selectedValue = null;
self._reset();
};
ActionSelector.prototype = Object.create(EventBase.prototype);
/** @type {String} The value that was selected. */
ActionSelector.prototype._selectedValue = null;
/** @type {Dialogue} The reference to the dialogue. */
ActionSelector.prototype._popup = null;
/** @type {String} The title of popup. */
ActionSelector.prototype._title = null;
/** @type {String} The message in popup. */
ActionSelector.prototype._message = null;
/** @type {object} The information for radion buttons. */
ActionSelector.prototype._actions = null;
/** @type {String} The text for confirm button. */
ActionSelector.prototype._confirm = null;
/** @type {String} The text for cancel button. */
ActionSelector.prototype._cancel = null;
/**
* Hook to executed after the view is rendered.
*
* @method _afterRender
*/
ActionSelector.prototype._afterRender = function() {
var self = this;
// Confirm button is disabled until a choice is done.
self._find('[data-action="action-selector-confirm"]').attr('disabled', 'disabled');
// Add listener for radio buttons change.
self._find('[data-region="action-selector-radio-buttons"]').change(function() {
self._selectedValue = $("input[type='radio']:checked").val();
self._find('[data-action="action-selector-confirm"]').removeAttr('disabled');
self._refresh.bind(self);
});
// Add listener for cancel.
self._find('[data-action="action-selector-cancel"]').click(function(e) {
e.preventDefault();
self.close();
});
// Add listener for confirm.
self._find('[data-action="action-selector-confirm"]').click(function(e) {
e.preventDefault();
if (!self._selectedValue.length) {
return;
}
self._trigger('save', {action: self._selectedValue});
self.close();
});
};
/**
* Close the dialogue.
*
* @method close
*/
ActionSelector.prototype.close = function() {
var self = this;
self._popup.close();
self._reset();
};
/**
* Opens the action selector.
*
* @method display
* @return {Promise}
*/
ActionSelector.prototype.display = function() {
var self = this;
return self._render().then(function(html) {
self._popup = new Dialogue(
self._title,
html,
self._afterRender.bind(self)
);
return;
}).fail(Notification.exception);
};
/**
* Find a node in the dialogue.
*
* @param {String} selector
* @return {JQuery} The node
* @method _find
*/
ActionSelector.prototype._find = function(selector) {
return $(this._popup.getContent()).find(selector);
};
/**
* Refresh the view.
*
* @method _refresh
* @return {Promise}
*/
ActionSelector.prototype._refresh = function() {
var self = this;
return self._render().then(function(html) {
self._find('[data-region="action-selector"]').replaceWith(html);
self._afterRender();
return;
});
};
/**
* Render the dialogue.
*
* @method _render
* @return {Promise}
*/
ActionSelector.prototype._render = function() {
var self = this;
var choices = [];
for (var i in self._actions) {
choices.push(self._actions[i]);
}
var content = {'message': self._message, 'choices': choices,
'confirm': self._confirm, 'cancel': self._cancel};
return Templates.render('tool_lp/action_selector', content);
};
/**
* Reset the dialogue properties.
*
* This does not reset everything, just enough to reset the UI.
*
* @method _reset
*/
ActionSelector.prototype._reset = function() {
this._popup = null;
this._selectedValue = '';
};
return /** @alias module:tool_lp/actionselector */ ActionSelector;
});