WebGUI::BackgroundProcess (used now by AssetExport)

2010-09-20 11:45:21 -07:00 · 2010-09-20 11:45:21 -07:00 · 79de38dc4a
commit 79de38dc4a
parent 20db0287b4
11 changed files with 1309 additions and 43 deletions
--- a/lib/WebGUI/BackgroundProcess/AssetExport.pm
+++ b/lib/WebGUI/BackgroundProcess/AssetExport.pm
@ -0,0 +1,173 @@
+package WebGUI::BackgroundProcess::AssetExport;
+
+=head1 LEGAL
+
+ -------------------------------------------------------------------
+  WebGUI is Copyright 2001-2009 Plain Black Corporation.
+ -------------------------------------------------------------------
+  Please read the legal notices (docs/legal.txt) and the license
+  (docs/license.txt) that came with this distribution before using
+  this software.
+ -------------------------------------------------------------------
+  http://www.plainblack.com                     info@plainblack.com
+ -------------------------------------------------------------------
+
+=cut
+
+use strict;
+use warnings;
+
+=head1 NAME
+
+WebGUI::BackgroundProcess::AssetExport
+
+=head1 DESCRIPTION
+
+Renders an admin console page that polls ::Status to draw a friendly graphical
+representation of how an export is coming along.
+
+=head1 SUBROUTINES
+
+These subroutines are available from this package:
+
+=cut
+
+use Template;
+
+my $template = <<'TEMPLATE';
+<p>
+Currently exporting <span id='current'></span>
+(<span id='finished'></span>/<span id='total'></span>).<br />
+<span id='elapsed'></span> seconds elapsed.
+</p>
+<ul id='tree'></ul>
+[% MACRO yui(file) BLOCK %]
+<script src="$extras/yui/build/$file"></script>
+[% END %]
+[% yui("yahoo/yahoo-min.js") %]
+[% yui("json/json-min.js") %]
+[% yui("event/event-min.js") %]
+[% yui("connection/connection_core-min.js") %]
+<script>
+(function (statusUrl) {
+    var JSON = YAHOO.lang.JSON;
+    function error(msg) {
+        alert(msg);
+    }
+    function draw(data) {
+        var ul, old, finished = 0, total = 0, current;
+        function recurse(asset, node) {
+            var li = document.createElement('li'), txt, notes, ul, i;
+
+            total += 1;
+
+            txt = asset.url;
+            if (asset.current) {
+                li.className += 'current';
+                current = asset.url;
+            }
+            else if (asset.badUserPrivileges) {
+                li.className = 'error';
+                txt += ' (bad user privileges)';
+                finished += 1;
+            }
+            else if (asset.notExportable) {
+                li.className = 'error';
+                txt += ' (not exportable)';
+                finished += 1;
+            }
+            else if (asset.done) {
+                li.className = 'done';
+                finished += 1;
+            }
+            li.appendChild(document.createTextNode(txt));
+            if (asset.collateralNotes) {
+                notes = document.createElement('p');
+                notes.innerHTML = asset.collateralNotes;
+                li.appendChild(notes);
+            }
+            if (asset.children) {
+                ul = document.createElement('ul');
+                for (i = 0; i < asset.children.length; i += 1) {
+                    recurse(asset.children[i], ul);
+                    li.appendChild(ul);
+                }
+            }
+            node.appendChild(li);
+        }
+        ul = document.createElement('ul');
+        old = document.getElementById('tree');
+        ul.id = old.id;
+        recurse(JSON.parse(data.status), ul);
+        old.parentNode.replaceChild(ul, old);
+        document.getElementById('total').innerHTML = total;
+        document.getElementById('finished').innerHTML = finished;
+        document.getElementById('current').innerHTML = current || 'nothing';
+        document.getElementById('elapsed').innerHTML = data.elapsed;
+    }
+    function fetch() {
+        var callback = {
+            success: function (o) {
+                var data, status;
+                if (o.status != 200) {
+                    error("Server returned bad response");
+                    return;
+                }
+                data = JSON.parse(o.responseText);
+                if (data.error) {
+                    error(data.error);
+                }
+                else if (data.finished) {
+                    draw(data);
+                }
+                else {
+                    draw(data);
+                    setTimeout(fetch, 1000);
+                }
+            },
+            failure: function (o) {
+                error("Could not communicate with server");
+            }
+        };
+        YAHOO.util.Connect.asyncRequest('GET', statusUrl, callback, null);
+    }
+    YAHOO.util.Event.onDOMReady(fetch);
+}("$statusUrl"));
+</script>
+TEMPLATE
+
+my $stylesheet = <<'STYLESHEET';
+<style>
+#tree li         { color: black }
+#tree li.current { color: cyan }
+#tree li.error   { color: red }
+#tree li.done    { color: green }
+</style>
+STYLESHEET
+
+#-------------------------------------------------------------------
+
+=head2 handler ( process )
+
+See WebGUI::Operation::BackgroundProcess.
+
+=cut
+
+sub handler {
+    my $process = shift;
+    my $session = $process->session;
+    my $url     = $session->url;
+    my $tt      = Template->new( { INTERPOLATE => 1 } );
+    my %vars    = (
+        statusUrl => $url->page( $process->contentPairs('Status') ),
+        extras    => $session->url->extras,
+    );
+    $tt->process( \$template, \%vars, \my $content ) or die $tt->error;
+
+    my $console = WebGUI::AdminConsole->new( $process->session, 'assets' );
+    $session->style->setRawHeadTags($stylesheet);
+    my $i18n = WebGUI::International->new( $session, 'Asset' );
+    return $console->render( $content, $i18n->get('Page Export Status') );
+} ## end sub handler
+
+1;