-function maybe_load_more_content() {
+function maybe_load_more_content(event) {
var scroller = this; // element with scroll bars
- var container; // element that receives new content
+ var $container; // element that receives new content
var src; // url for retrieving content
var scrollHeight;
+ var spinner, colspan;
+ var serial = Date.now();
+ var params;
scrollHeight = scroller.scrollHeight || $('body')[0].scrollHeight;
if ($(scroller).scrollTop() + $(scroller).height()
>
- scrollHeight - 50) {
- container = $(this).data('infinite-container');
- src = $(container).attr('data-infinite-content-href');
- if (!src)
+ scrollHeight - 50)
+ {
+ $container = $(event.data.container);
+ if (!$container.attr('data-infinite-content-href0')) {
+ // Remember the first page source url, so we can refresh
+ // from page 1 later.
+ $container.attr('data-infinite-content-href0',
+ $container.attr('data-infinite-content-href'));
+ }
+ src = $container.attr('data-infinite-content-href');
+ if (!src || !$container.is(':visible'))
// Finished
return;
+
// Don't start another request until this one finishes
- $(container).attr('data-infinite-content-href', null);
+ $container.attr('data-infinite-content-href', null);
+ spinner = '<div class="spinner spinner-32px spinner-h-center"></div>';
+ if ($container.is('table,tbody,thead,tfoot')) {
+ // Hack to determine how many columns a new tr should have
+ // in order to reach full width.
+ colspan = $container.closest('table').
+ find('tr').eq(0).find('td,th').length;
+ if (colspan == 0)
+ colspan = '*';
+ spinner = ('<tr class="spinner"><td colspan="' + colspan + '">' +
+ spinner +
+ '</td></tr>');
+ }
+ $container.find(".spinner").detach();
+ $container.append(spinner);
+ $container.attr('data-infinite-serial', serial);
+
+ // Combine infiniteContentParams from multiple sources. This
+ // mechanism allows each of several components to set and
+ // update its own set of filters, without having to worry
+ // about stomping on some other component's filters.
+ //
+ // For example, filterable.js writes filters in
+ // infiniteContentParamsFilterable ("search for text foo")
+ // without worrying about clobbering the filters set up by the
+ // tab pane ("only show jobs and pipelines in this tab").
+ params = {};
+ $.each($container.data(), function(datakey, datavalue) {
+ // Note: We attach these data to DOM elements using
+ // <element data-foo-bar="baz">. We store/retrieve them
+ // using $('element').data('foo-bar'), although
+ // .data('fooBar') would also work. The "all data" hash
+ // returned by $('element').data(), however, always has
+ // keys like 'fooBar'. In other words, where we have a
+ // choice, we stick with the 'foo-bar' style to be
+ // consistent with HTML. Here, our only option is
+ // 'fooBar'.
+ if (/^infiniteContentParams/.exec(datakey)) {
+ if (datavalue instanceof Object) {
+ $.each(datavalue, function(hkey, hvalue) {
+ if (hvalue instanceof Array) {
+ params[hkey] = (params[hkey] || []).concat(hvalue);
+ } else if (hvalue instanceof Object) {
+ $.extend(params[hkey], hvalue);
+ } else {
+ params[hkey] = hvalue;
+ }
+ });
+ }
+ }
+ });
+ $.each(params, function(k,v) {
+ if (v instanceof Object) {
+ params[k] = JSON.stringify(v);
+ }
+ });
+
$.ajax(src,
{dataType: 'json',
type: 'GET',
- data: {},
- context: {container: container, src: src}}).
+ data: params,
+ context: {container: $container, src: src, serial: serial}}).
fail(function(jqxhr, status, error) {
+ var $faildiv;
+ var $container = this.container;
+ if ($container.attr('data-infinite-serial') != this.serial) {
+ // A newer request is already in progress.
+ return;
+ }
if (jqxhr.readyState == 0 || jqxhr.status == 0) {
message = "Cancelled."
} else if (jqxhr.responseJSON && jqxhr.responseJSON.errors) {
} else {
message = "Request failed.";
}
- // TODO: report this to the user.
+ // TODO: report the message to the user.
console.log(message);
- $(this.container).attr('data-infinite-content-href', this.src);
+ $faildiv = $('<div />').
+ attr('data-infinite-content-href', this.src).
+ addClass('infinite-retry').
+ append('<span class="fa fa-warning" /> Oops, request failed. <button class="btn btn-xs btn-primary">Retry</button>');
+ $container.find('div.spinner').replaceWith($faildiv);
}).
done(function(data, status, jqxhr) {
- $(this.container).append(data.content);
- $(this.container).attr('data-infinite-content-href', data.next_page_href);
- $(document).trigger('ajax:complete');
+ if ($container.attr('data-infinite-serial') != this.serial) {
+ // A newer request is already in progress.
+ return;
+ }
+ $container.find(".spinner").detach();
+ $container.append(data.content);
+ $container.attr('data-infinite-content-href', data.next_page_href);
});
- }
+ }
+}
+
+function ping_all_scrollers() {
+ // Send a scroll event to all scroll listeners that might need
+ // updating. Adding infinite-scroller class to the window element
+ // doesn't work, so we add it explicitly here.
+ $('.infinite-scroller').add(window).trigger('scroll');
}
+
$(document).
+ on('click', 'div.infinite-retry button', function() {
+ var $retry_div = $(this).closest('.infinite-retry');
+ var $container = $(this).closest('.infinite-scroller-ready')
+ $container.attr('data-infinite-content-href',
+ $retry_div.attr('data-infinite-content-href'));
+ $retry_div.
+ replaceWith('<div class="spinner spinner-32px spinner-h-center" />');
+ ping_all_scrollers();
+ }).
+ on('refresh-content', '[data-infinite-scroller]', function() {
+ // Clear all rows, reset source href to initial state, and
+ // (if the container is visible) start loading content.
+ var first_page_href = $(this).attr('data-infinite-content-href0');
+ if (!first_page_href)
+ first_page_href = $(this).attr('data-infinite-content-href');
+ $(this).
+ html('').
+ attr('data-infinite-content-href', first_page_href);
+ ping_all_scrollers();
+ }).
on('ready ajax:complete', function() {
$('[data-infinite-scroller]').each(function() {
+ if ($(this).hasClass('infinite-scroller-ready'))
+ return;
+ $(this).addClass('infinite-scroller-ready');
+
+ // $scroller is the DOM element that hears "scroll"
+ // events: sometimes it's a div, sometimes it's
+ // window. Here, "this" is the DOM element containing the
+ // result rows. We pass it to maybe_load_more_content in
+ // event.data.
var $scroller = $($(this).attr('data-infinite-scroller'));
- if (!$scroller.hasClass('smart-scroll'))
+ if (!$scroller.hasClass('smart-scroll') &&
+ 'scroll' != $scroller.css('overflow-y'))
$scroller = $(window);
$scroller.
addClass('infinite-scroller').
- data('infinite-container', this).
- on('scroll', maybe_load_more_content);
+ on('scroll resize', { container: this }, maybe_load_more_content).
+ trigger('scroll');
});
});
projects / arvados.git / blobdiff