1 // Load tab panes on demand. See app/views/application/_content.html.erb
3 // Fire when a tab is selected/clicked.
4 $(document).on('shown.bs.tab', '[data-toggle="tab"]', function(event) {
5 // reload the pane (unless it's already loaded)
6 $($(event.target).attr('href')).
8 trigger('arv:pane:reload');
11 // Ask a refreshable pane to reload via ajax.
13 // Target of this event is the anchor element that manages the pane. A reload
14 // consists of an AJAX call to load the "data-pane-content-url" and replace the
15 // contents of the DOM node pointed to by "href".
17 // There are four CSS classes set on the object to indicate its state:
18 // pane-loading, pane-stale, pane-loaded, pane-reload-pending
20 // There are five states based on the presence or absence of css classes:
22 // 1. no pane-* states means the pane must be loaded when the pane becomes active
24 // 2. "pane-loading" means an AJAX call has been made to reload the pane and we are
25 // waiting on a result
27 // 3. "pane-loading pane-stale" indicates a pane that is already loading has
28 // been invalidated and should schedule a reload immediately when the current
29 // load completes. (This happens when there is a cluster of events, where the
30 // reload is triggered by the first event, but we want ensure that we
31 // eventually load the final quiescent state).
33 // 4. "pane-loaded" means the pane is up to date
35 // 5. "pane-loaded pane-reload-pending" indicates a reload is scheduled (but has
36 // not started yet), suppressing scheduling of any further reloads.
38 $(document).on('arv:pane:reload', '[data-pane-content-url]', function(e) {
39 // $pane, the event target, is an element whose content is to be
40 // replaced. Pseudoclasses on $pane (pane-loading, etc) encode the
41 // current loading state.
42 var $pane = $(e.target);
44 var content_url = $pane.attr('data-pane-content-url');
46 // When reloadable elements are nested, we can receive
47 // arv:pane:reload events even though the selector in .on()
48 // does not match e.target. Ignore such events.
54 if ($pane.hasClass('pane-loading')) {
55 // Already loading, mark stale to schedule a reload after this one.
56 $pane.addClass('pane-stale');
60 // The default throttle (mininum milliseconds between refreshes)
61 // can be overridden by an .arv-log-refresh-control element inside
62 // the pane -- or, failing that, the pane element itself -- with a
63 // data-load-throttle attribute. This allows the server to adjust
64 // the throttle depending on the pane content.
66 $pane.find('.arv-log-refresh-control').attr('data-load-throttle') ||
67 $pane.attr('data-load-throttle') ||
69 var now = (new Date()).getTime();
70 var loaded_at = $pane.attr('data-loaded-at');
71 var since_last_load = now - loaded_at;
72 if (loaded_at && (since_last_load < throttle)) {
73 if (!$pane.hasClass('pane-reload-pending')) {
74 $pane.addClass('pane-reload-pending');
75 setTimeout((function() {
76 $pane.trigger('arv:pane:reload');
77 }), throttle - since_last_load);
82 // We know this doesn't have 'pane-loading' because we tested for it above
83 $pane.removeClass('pane-reload-pending');
84 $pane.removeClass('pane-loaded');
85 $pane.removeClass('pane-stale');
87 if (!$pane.hasClass('active') &&
88 $pane.parent().hasClass('tab-content')) {
89 // $pane is one of the content areas in a bootstrap tabs
90 // widget, and it isn't the currently selected tab. If and
91 // when the user does select the corresponding tab, it will
92 // get a shown.bs.tab event, which will invoke this reload
93 // function again (see handler above). For now, we just insert
94 // a spinner, which will be displayed while the new content is
96 $pane.html('<div class="spinner spinner-32px spinner-h-center"></div>');
100 $pane.addClass('pane-loading');
102 $.ajax(content_url, {dataType: 'html', type: 'GET', context: $pane}).
103 done(function(data, status, jqxhr) {
104 // Preserve collapsed state
106 var collapsable = {};
107 $(".collapse", this).each(function(i, c) {
108 collapsable[c.id] = $(c).hasClass('in');
111 $(".collapse", tmp).each(function(i, c) {
112 if (collapsable[c.id]) {
115 $(c).removeClass('in');
119 $pane.removeClass('pane-loading');
120 $pane.addClass('pane-loaded');
121 $pane.attr('data-loaded-at', (new Date()).getTime());
122 $pane.trigger('arv:pane:loaded');
124 if ($pane.hasClass('pane-stale')) {
125 $pane.trigger('arv:pane:reload');
127 }).fail(function(jqxhr, status, error) {
130 var contentType = jqxhr.getResponseHeader('Content-Type');
131 if (contentType && contentType.match(/\btext\/html\b/)) {
132 var $response = $(jqxhr.responseText);
133 var $wrapper = $('div#page-wrapper', $response);
134 if ($wrapper.length) {
135 errhtml = $wrapper.html();
137 errhtml = jqxhr.responseText;
140 errhtml = ("An error occurred: " +
141 (jqxhr.responseText || status)).
142 replace(/&/g, '&').
143 replace(/</g, '<').
144 replace(/>/g, '>');
146 $pane.html('<div><p>' +
147 '<a href="#" class="btn btn-primary tab_reload">' +
148 '<i class="fa fa-fw fa-refresh"></i> ' +
149 'Reload tab</a></p><iframe style="width: 100%"></iframe></div>');
150 $('.tab_reload', $pane).click(function() {
152 html('<div class="spinner spinner-32px spinner-h-center"></div>').
153 closest('.pane-loaded').
154 attr('data-loaded-at', 0).
155 trigger('arv:pane:reload');
157 // We want to render the error in an iframe, in order to
158 // avoid conflicts with the main page's element ids, etc.
159 // In order to do that dynamically, we have to set a
160 // timeout on the iframe window to load our HTML *after*
161 // the default source (e.g., about:blank) has loaded.
162 var iframe = $('iframe', $pane)[0];
163 iframe.contentWindow.setTimeout(function() {
164 $('body', iframe.contentDocument).html(errhtml);
165 iframe.height = iframe.contentDocument.body.scrollHeight + "px";
167 $pane.removeClass('pane-loading');
168 $pane.addClass('pane-loaded');
172 // Mark all panes as stale/dirty. Refresh any 'active' panes.
173 $(document).on('arv:pane:reload:all', function() {
174 $('[data-pane-content-url]').trigger('arv:pane:reload');
177 $(document).on('arv-log-event', '.arv-refresh-on-log-event', function(e) {
178 // Panes marked arv-refresh-on-log-event should be refreshed
179 $(e.target).trigger('arv:pane:reload');
182 // If there is a 'tab counts url' in the nav-tabs element then use it to get some javascript that will update them
183 $(document).on('ready count-change', function() {
184 var tabCountsUrl = $('ul.nav-tabs').data('tab-counts-url');
185 if( tabCountsUrl && tabCountsUrl.length ) {
186 $.get( tabCountsUrl );