Tech talk live share extras extension modules feb 13

Using Share Extensibility Modules
in Share Extras

Will Abson (@wabson)

Agenda
•  Introduction
•  Custom Doclib Views
•  Customizing Custom Views
•  Customizing Dashlets
•  Customizing Document Details page

About Me
•  Integrations Engineer @ Alfresco
•  Founder and Lead of Share Extras
•  Creator of Site Geotagged Content Add-on

Recap – Share Extensibility
•  TTL by Dave Draper, May 2012
•  Share Customizations Live by Dave
Draper and Erik Winlöf, Alfresco DevCon,
Nov 2012

Extensibility Main Points
•  Declare modules in site-data/extensions
•  Change component behaviors by modifying the
script model via a controller .js extension
•  Add HTML markup before, after, or instead of
the default component content via @region
directive
–  As of 4.2.b, many components support adding
markup into the component via the @markup directive

Extensibility Main Points
•  Add additional client-side dependencies
via .head.ftl extensions, or (in 4.2) using
the @script and @link directives in
a .html.ftl extension
•  Add or override UI labels with
additional .properties files

Site Geotagged Content
•  Visualize Geotagged
Content in Share
–  Using Google Maps
•  Tika provides
automatic extraction
of Geographic info
from files
–  e.g. EXIF data in
digital photos

Originally just a Site Dashlet

Now also a Custom Doclib View

Custom DocLib Views
•  Allows us to add in our own views, which
can be selected by the user
•  Requires Alfresco 4.0.2 / 4.2.a or later
•  More information on blog post by Ray
Gauss II
•  Implemented as client-side renderer
classes

Geographic Renderer
•  Built on top of the thumbnail renderer
•  We need to define
–  Module definition
–  Additional HTML markup (via Freemarker)
–  Component controller extension
–  Client-side renderer class
–  CSS, icon, labels

Renderer Module Definition
org_sharextras_doclib-geo-view.xml

<extension>
<modules>
<module>
<id>Document List Geographic View</id>
<customizations>
<customization>
<targetPackageRoot>org.alfresco</targetPackageRoot>
<sourcePackageRoot>org.sharextras.customization.doclib-
geo-view</sourcePackageRoot>
</customization>
</customizations>
</module>
</modules>
</extension>

Renderer HTML Markup
components/documentlibrary/documentlist.get.html.ftl
<@markup id="customDocLibView" target="documentListContainer" action="after">
<div id="${args.htmlid}-geo" class="alf-geo documents"></div>
<div id="${args.htmlid}-geo-empty" class="hidden">
<div class="yui-dt-liner"></div>
</div>
<div id="${args.htmlid}-geo-item-template" class="alf-geo-item hidden”>...</div>
...
<script type="text/javascript">//<![CDATA[
YAHOO.Bubbling.subscribe("postSetupViewRenderers", function(layer, args) {
var scope = args[1].scope;
var geoViewRenderer = new ${geoRendererClass}("geo")
geoViewRenderer.zoomLevel = ${preferences.zoomLevel!15};
geoViewRenderer.center = "${(preferences.center!'')?js_string}";
geoViewRenderer.mapTypeId = "${(preferences.mapTypeId!'')?js_string}";
scope.registerViewRenderer(geoViewRenderer);
});
//]]></script>
</@>

Renderer Controller Extension
components/documentlibrary/documentlist.get.js

model.viewRendererNames.push("geo");
model.geoRendererClass =
"Extras.DocumentListGMapsGeoViewRenderer";

Renderer Client-side Class
source/web/extras/components/documentlibrary/
documentlist-geo.js

Extras.DocumentListGMapsGeoViewRenderer = function
DocumentListGMapsGeoViewRenderer_constructor(name)
{
...
}

YAHOO.extend(Extras.DocumentListGMapsGeoViewRenderer,
Extras.DocumentListGeoViewRendererBase,
{
setupRenderer: function DL_GVR_setupRenderer(scope) {...},
renderView: function DL_GVR_renderView(scope, sRequest, oResponse,
oPayload) {...}
}

Demo
•  Site Geotagged Content Dashlet
•  Site Geographic View

Introducing Leaflet
•  A great alternative to
Google Maps
•  Open Source
•  Mobile-friendly
•  Plugin a wide range
of mapping providers

leafletjs.com

Changing the View Behaviour
•  We’ll use a second module for this
–  Order is important!
•  We need to provide
–  Module definition
–  A further webscript controller extension

Renderer Override Module
org_sharextras_doclib-geo-view-leaflet.xml

<extension>
<modules>
<module>
<id>Document List Geographic View</id>
<customizations>
<customization>
<targetPackageRoot>org.alfresco</targetPackageRoot>
<sourcePackageRoot>org.sharextras.customization.doclib-
geo-view-leaflet</sourcePackageRoot>
</customization>
</customizations>
</module>
</modules>
</extension>

Renderer Override Controller
Extension

model.geoRendererClass =
"Extras.DocumentListLeafletGeoViewRenderer";

Demo
•  Site Geographic View with Leaflet

Changing other Components
•  The same approach is valid for most
OOTB components, which populate the
model.widgets object
–  The @createWidgets Freemarker directive
new in 4.2 then renders the widget markup
•  To demonstrate this, let’s also change the
dashlet behavior

Demo
•  Site Geotagged Content Dashlet with
Leaflet

Custom DocLib Previewers
•  The ability to ‘intervene’ between the
widget configuration being declared and it
being rendered is incredibly useful in other
places, too!
•  Let’s look at the PdfJs viewer included in
the Media Viewers add-on as an example

Previewer Controller Extension
if (model.widgets) // Protection for older versions
{
for (var i = 0; i < model.widgets.length; i++)
{
var widget = model.widgets[i];
if (widget.id == "WebPreview")
{
// Insert new pluginCondition(s) at start of the chain
var conditions = [{...}];
var oldConditions = eval("(" + widget.options.pluginConditions + ")");
// Add the other conditions back in
for (var j = 0; j < oldConditions.length; j++)
{
conditions.push(oldConditions[j]);
}
// Override the original conditions
model.pluginConditions = jsonUtils.toJSONString(conditions);
widget.options.pluginConditions = model.pluginConditions;
}
}

More Information
•  http://sharextras.org
•  http://www.slideshare.net/alfresco/tech-
talk-live-on-share-extensibility
•  http://blogs.alfresco.com/wp/developer/
author/ddraper/

Tech talk live share extras extension modules feb 13

Tech talk live share extras extension modules feb 13

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