127 lines
3.0 KiB
JavaScript
127 lines
3.0 KiB
JavaScript
var H5PDataView = (function ($) {
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/**
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* Initialize a new H5P data view.
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*
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* @param {Object} container
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* @param {String} source URL for data
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* @param {Array} headers for data
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* @param {Object} l10n translations
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*/
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function H5PDataView(container, source, headers, l10n, classes) {
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var self = this;
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self.$container = $(container).addClass('h5p-data-view').html('');
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H5PUtils.throbber(l10n.loading).appendTo(self.$container);
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self.source = source;
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self.headers = headers;
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self.l10n = l10n;
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self.classes = (classes === undefined ? {} : classes);
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self.limit = 20;
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self.loadData();
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}
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/**
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* Load data for view.
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*
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* @param {Number} offset data collection offset
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*/
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H5PDataView.prototype.loadData = function (offset) {
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var self = this;
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// Create URL
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var url = self.source;
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if (offset !== undefined) {
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url += (url.indexOf('?') === -1 ? '?' : '&') + 'offset=' + offset + '&limit=' + self.limit;
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}
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// Fire ajax request
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$.ajax({
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dataType: 'json',
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cache: true,
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url: url
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}).fail(function () {
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// Error handling
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self.setMessage(self.l10n.ajaxFailed);
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}).done(function (data) {
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if (!data.rows.length) {
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self.setMessage(self.l10n.noData);
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}
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else {
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// Update table data
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self.updateTable(data.rows);
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}
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// Update pagination widget
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self.updatePagination(data.num);
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});
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};
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/**
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* Display the given message to the user.
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*
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* @param {String} message
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*/
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H5PDataView.prototype.setMessage = function (message) {
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var self = this;
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var $message = $('<p/>', {
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text: message
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});
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if (self.table === undefined) {
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self.$container.children().replaceWith($message);
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}
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else {
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self.table.setBody($('<p/>', {text: message}));
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}
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};
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/**
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* Update table data.
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*
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* @param {Array} rows
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*/
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H5PDataView.prototype.updateTable = function (rows) {
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var self = this;
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if (self.table === undefined) {
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// Create new table
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self.table = new H5PUtils.Table(self.classes, self.headers);
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self.table.appendTo(self.$container.html(''));
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}
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// Add/update rows
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self.table.setRows(rows);
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};
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/**
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* Update pagination widget.
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*
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* @param {Number} num size of data collection
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*/
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H5PDataView.prototype.updatePagination = function (num) {
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var self = this;
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if (self.pagination === undefined) {
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// Create new widget
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var $pagerContainer = $('<div/>', {'class': 'h5p-pagination'});
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self.pagination = new H5PUtils.Pagination(num, self.limit, function (offset) {
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// Handle page changes in pagination widget
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self.table.setBody(H5PUtils.throbber(self.l10n.loading));
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self.loadData(offset);
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}, self.l10n);
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self.pagination.appendTo($pagerContainer);
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self.table.setFoot($pagerContainer);
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}
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else {
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// Update existing widget
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self.pagination.update(num, self.limit);
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}
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};
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return H5PDataView;
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})(H5P.jQuery);
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