Class s7sdk.common.Download

Extends s7sdk.common.Button.

The Download is a button component which allows to download a PDF file associated with the catalog asset to the local system.

The application should specify an instance of MediaSetDesc or OrientationSetDesc corresponding to the current catalog using setMediaSet() API, Download component will automatically derive the name of associated PDF file by appending "pdf" suffix to the catalog name. Alternatively the application may pass the name of the asset to download explicitly using setDownloadableAsset() method call.

In any case, Download component will check for PDF availability on the server and dispatch s7sdk.StatusEvent.NOTF_ASSET_METADATA_READY event when the check is complete. The result of this check can be read using canDownload() API.

The following modifiers are supported:

Modifier	Syntax	Description	Default
contenturl	contentRootPath	The content root path. If no domain is specified, the domain from which the page is served is applied instead. Standard URI path resolution applies.	/is/content/

Defining the Appearance using CSS

The CSS class for styling the Download is .s7download. This button has four states: up, over, down and disabled. You can style these states by adding the state attribute selector to the CSS class. It is recommended that you define common CSS under the main class and only define the necessary distinctions when using attribute selectors.

CSS Class	Attribute Selector	Description
`.s7download`	`state=[up\|over\|down\|disabled]`	Define the appearance of `Download` for the various states.
`.s7tooltip`	(None)	A global class selector that defines appearance for the tooltips. To disable tooltips set the `display` style to `none`.

Localized Symbols

Download also has text symbols that you can localize either in a preset or in the viewer page though the mechanisms provided by the ParameterManager. For more information on localization consult the ParameterManager API documentation and HTML5 Viewers SDK User Guide.

Symbol	Description
`Download.TOOLTIP`	Define a localized tooltip of `Download`

Class Summary
Constructor Attributes	Constructor Name and Description
	s7sdk.common.Download(container, settings, compId)

Method Summary
Method Attributes	Method Name and Description
	addEventListener(type, handler, useCapture) Adds an event listener to the instance of the `Download` component.
	canDownload() Returns the result of PDF availability check.
	setDownloadableAsset(downloadId) Sets an explicit downloadable asset ID.
	setMediaSet(mediaSet) Sets the media set of the primary asset used by application.

Methods borrowed from class s7sdk.common.Button:: activate, blur, deactivate, dispose, focus, getHeight, getWidth, resize, setCSS, setLabel

Class Detail

s7sdk.common.Download(container, settings, compId)

Example Code
This example demonstrates how to use the Download component in a simple viewer. In this example a Container object,
a PageView object, and a Download object are created. Clicking the download button a file download dialog will 
appear and prompt user to save file to the local system. 

The code below does the following:

The Scene7 HTML5 SDK is linked to the page and the required s7sdk components are included in the document head.
CSS Styles are defined in the document head to control the appearance of the ZoomView and Download components.
The s7sdk.Util.init() method is called to initialize the SDK.
A ParameterManager object is created to handle component modifiers for the viewer.
An initViewer() function is defined. This function initializes a couple of modifiers (hard coded for example purposes),
then creates the component objects required for this simple example. The initViewer() function also adds event listeners
that designate functions to handle relevant component events (which might be dispatched by the components as a result of
user interactions, changes in a component's state, etc.).
A handler function is defined to respond to the component event listener added in the initViewer() function.
An event listener is added to the ParameterManager object that designates the initViewer() function as the handler
to call when the Scene7 SDK is loaded and ready.
Finally, the init() method is called on the ParameterManager object to start the viewer.

<!DOCTYPE html>
<html>
    <head>
    	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <meta name="viewport" content="width=device-width" />
        
        <title>PageView Example</title>

        <!--
        To run this example locally you need to replace this with an absolute SDK path.
        For more information check the HTML5 Viewers SDK User Guide or the examples
        included in the package.
        -->
        <script language="javascript" type="text/javascript"
                src="../js/s7sdk/utils/Utils.js"></script>

        <script language="javascript" type="text/javascript">
            s7sdk.Util.lib.include('s7sdk.common.Button');
            s7sdk.Util.lib.include('s7sdk.common.ControlBar');
            s7sdk.Util.lib.include('s7sdk.common.Container');
			s7sdk.Util.lib.include('s7sdk.set.MediaSet');
            s7sdk.Util.lib.include('s7sdk.set.PageView');
            s7sdk.Util.lib.include('s7sdk.set.PageScrubber');
            s7sdk.Util.lib.include('s7sdk.set.ThumbnailGridView');
            s7sdk.Util.lib.include('s7sdk.set.Swatches');
            s7sdk.Util.lib.include('s7sdk.set.TableOfContents');
            s7sdk.Util.lib.include('s7sdk.share.Share');
        </script>

        <style type="text/css" media="screen">
            .s7pageview {
                height: 480px;
                width: 640px;
                top: 40px;
                left: 20px;
                position: relative;
                border: solid 1px #cccccc;
            }
            .s7thumbnailgridview {
                height: 480px;
                width: 640px;
                top: 40px;
                left: 20px;
                position: absolute;
                border: solid 1px #cccccc;
            }
            .s7controlbar{
                position: relative;
                background-color: #cccccc;
                top: 5px;
                left: 20px;
                width: 640px;
                position: absolute;
                z-index: 1;
            }
            .s7scrubberswatchesbutton {
                position: absolute;
                top: 2px;
                left: 5px;
            }
            .s7thumbnailpagebutton {
                position: absolute;
                top: 2px;
                left: 30px;
            }
            .s7tableofcontents {
                position: absolute;
                top: 2px;
                left: 60px;
            }
            .s7pagescrubber {
                height: 55px;
                width: 640px;
                top: 540px;
                left: 0px;
                position: absolute;
				z-index:100;
            }
            .s7swatches {
                position: absolute;
                top: 500px;
                width: 700px;
            }
            .s7download  {
                position: absolute;
                top: 2px;
                left: 90px;
            }
            .s7print  {
                position: absolute;
                top: 2px;
                left: 120px;
            }
        </style>

    </head>
    <body>

        <script type="text/javascript" language="JavaScript">
            var params, container, pageView, pageScrubber, controls, 
                scrubberSwatchesBtn, thumbnailPageBtn, gridView, swatches, mediaSet, tableOfContents, downLoad;

            // Initialize the SDK
            s7sdk.Util.init();

            // Create ParameterManager instance to handles modifiers		
            params = new s7sdk.ParameterManager(null,null,{ "asset" : "MediaSet.asset" });

            // Define the function that initializes the viewer
            function initViewer(){
                // Set hardcoded modifiers (not required when values are specified on the url)
                params.push("serverurl", "http://s7d1.scene7.com/is/image/");
                params.push("Download.contenturl","http://s7d1.scene7.com/is/content/");
                params.push("MediaSet.asset", "Viewers/eCat-Sample");
                params.push("MediaSet.labelkey", "toc");

				mediaSet = new s7sdk.set.MediaSet(null, params);
				mediaSet.addEventListener(s7sdk.event.AssetEvent.NOTF_SET_PARSED, onSetParsed);
				
             	// Create the Container component object
                container = new s7sdk.common.Container(null, params, "s7container");

                // Create the PageScrubber component object
                pageScrubber = new s7sdk.set.PageScrubber(container,params,"pagescrubber");
                // Create the PageView component object
                pageView = new s7sdk.set.PageView(container, params, "pageview");
                // Create the ThumbnailGridView component object
                gridView = new s7sdk.set.ThumbnailGridView(container, params, "gridview");

                // Create the ControlBar component object
                controls = new s7sdk.common.ControlBar(container, params, "controls");

                // Attach the PageView and GridView objects to the ControlBar
                controls.attachView(pageView, false);
                controls.attachView(gridView, false);

                // Create the ScrubberSwatchesButton component object
                scrubberSwatchesBtn = new s7sdk.common.ScrubberSwatchesButton("controls", params, "scrubberswatches");

                // Create the ThumbnailPageButton component object
                thumbnailPageBtn = new s7sdk.common.ThumbnailPageButton("controls", params, "thumbnailpage");

                tableOfContents = new s7sdk.set.TableOfContents("controls", params, "tableofcontents");
                tableOfContents.addEventListener(s7sdk.AssetEvent.ITEM_SELECTED_EVENT, onTableOfContentSelected);
                // Create the Swatches component object
                swatches = new s7sdk.set.Swatches(container, params, "swatches");

                // Create the Download component object
                downLoad = new s7sdk.common.Download('controls', params, 'download');

                // Create the Download component object
                print = new s7sdk.share.Print("controls", params, "print");                

                // Hide the ThumbnailGridView and Swatches objects by default
				gridView.setCSS(".s7thumbnailgridview", "visibility", "hidden");
				swatches.setCSS(".s7swatches", "visibility", "hidden");

                // Add an event listener for PageView selection events
                pageView.addEventListener(s7sdk.event.AssetEvent.ITEM_SELECTED_EVENT, onPageViewSelected, false);

                // Add an event listener for ThumbnailGridView swatch selection events
                gridView.addEventListener(s7sdk.event.AssetEvent.SWATCH_SELECTED_EVENT, onGridViewSwatchSelected, false);

                // Add an event listener for ScrubberSwatchesButton click events
                scrubberSwatchesBtn.addEventListener("click", onScrubberSwatchesButton, false);

                // Add an event listener for ThumbnailPageButton click events
                thumbnailPageBtn.addEventListener("click", onThumbnailPageButton, false);

                // Add an event listener for PageScrubber selection events
                pageScrubber.addEventListener(s7sdk.event.AssetEvent.ITEM_SELECTED_EVENT, onPageScrubberSelected, false);

                // Add an event listener for Swatches selection events
                swatches.addEventListener(s7sdk.event.AssetEvent.SWATCH_SELECTED_EVENT, onSwatchSelected, false);

                // Add an event listener for Download metadata ready events
                downLoad.addEventListener(s7sdk.event.StatusEvent.NOTF_ASSET_METADATA_READY, onMetadataReady, false);

                // hide Download
                downLoad.setCSS(".s7download", "display", "none");

                // set downloadable asset explicitly
                downLoad.setDownloadableAsset("Viewers/Fantastico2007");
            }

            // Define an event handler function to show the Download when download if available
            function onMetadataReady(event){
                downLoad.setCSS(".s7download", "display", downLoad.canDownload() ? "block" : "none");
            }

            // Define an event handler function to switch pages for PageView item selections
            function onPageViewSelected(event){
                switchToPage(event);
            }

            // Define an event handler function to switch pages for ThumbnailGridView swatch selections
            function onGridViewSwatchSelected(event){
                switchToPage(event);
            }

            // Define an event handler function to respond to ScrubberSwatchesButton clicks
            function onScrubberSwatchesButton(event){
                if(scrubberSwatchesBtn.isSelected()){
                    swatches.setCSS(".s7swatches", "visibility", "inherit");
                    pageScrubber.setCSS(".s7pagescrubber", "display", "none");
                }else{
                    swatches.setCSS(".s7swatches", "visibility", "hidden");
                    pageScrubber.setCSS(".s7pagescrubber", "display", "block");
                }
            }

            // Define an event handler function to respond to ThumbnailGridView clicks
            function onThumbnailPageButton(event){
                if(thumbnailPageBtn.isSelected()){
					pageView.setCSS(".s7pageview", "visibility", "hidden");
					gridView.setCSS(".s7thumbnailgridview", "visibility", "inherit");
                }else{
					pageView.setCSS(".s7pageview", "visibility", "inherit");
					gridView.setCSS(".s7thumbnailgridview", "visibility", "hidden");
                }
            }

            // Define an event handler function to switch pages for PageScrubber item selections
            function onPageScrubberSelected(event){
                switchToPage(event)
            }

            // Define an event handler function to switch pages for Swatches selections
            function onSwatchSelected(event){
                switchToPage(event)
            }

            // Define an event handler function to switch pages for TableOfContent item selections
            function onTableOfContentSelected(event){
                switchToPage(event);
            }
            
           // Define a function to update all components to display the currently selected page
            function switchToPage(event){
            	print.setCurrentFrameIndex(event.s7event.frame);
                pageView.setCurrentFrameIndex(event.s7event.frame);
                swatches.selectSwatch(event.s7event.frame);
                gridView.selectSwatch(event.s7event.frame, true);
                pageScrubber.setCurrentFrameIndex(event.s7event.frame);
                tableOfContents.setCurrentFrameIndex(event.s7event.frame);
                // If the ThumbnailGridView is showing, hide it and deselect the ThumbnailPageButton
                if(thumbnailPageBtn.isSelected()){
                    thumbnailPageBtn.setSelected(false);
                    onThumbnailPageButton();
                }
            }

            function onSetParsed(e) {
				print.setMediaSet(e.s7event.asset);
                downLoad.setMediaSet(e.s7event.asset);
            	tableOfContents.setMediaSet(e.s7event.asset);
				pageView.setMediaSet(e.s7event.asset);
				gridView.setMediaSet(e.s7event.asset);
				swatches.setMediaSet(e.s7event.asset);
				pageScrubber.setMediaSet(e.s7event.asset);
            }
            
            // The ParameterManager will dispatch SDK_READY when all modifiers have been processed
            // and it is safe to initialize the viewer		
            params.addEventListener(s7sdk.Event.SDK_READY, initViewer, false);

            // Now it is safe to process the modifiers, the callbacks have been defined
            // this will trigger the SDK_READY event
            params.init();
        </script>

    </body>
</html>

Default styles for Download:

.s7download {
	width:25px;
	height:25px;
	background-size:contain;
	background-repeat:no-repeat;
	background-position:center;
	-webkit-touch-callout:none;
	-webkit-user-select:none;
	-moz-user-select:none;
	-ms-user-select:none;
	user-select:none;
	-webkit-tap-highlight-color:rgba(0,0,0,0);
 }
.s7download[state='up'] {
	background-image:url(images/sdk/download_up.png);
 }
.s7download[state='over'] {
	background-image:url(images/sdk/download_over.png);
 }
.s7download[state='down'] {
	background-image:url(images/sdk/download_down.png);
 }
.s7download[state='disabled'] {
	background-image:url(images/sdk/download_disabled.png);
 }
.s7tooltip {
	position:absolute;
	padding:5px;
	line-height:100%;
	text-align:center;
	background-color:rgb(224, 224, 224);
	color:rgb(26,26,26);
	font-family:Helvetica, sans-serif;
	font-size:11px;
	z-index:10000;
	border:1px solid rgb(191,191,191);
 }

Parameters:
{String|Container} container: The reference to Container instance, ControlBar instance or the ID of the parent DOM element to which the component is added as a child
{s7sdk.ParameterManager} settings: ParameterManager as settings.
{String} compId: A unique ID for this component.

Method Detail

addEventListener(type, handler, useCapture)

Adds an event listener to the instance of the Download component. The handler function receives a DOM event object of type Event.

The events supported by the component are:

s7sdk.event.StatusEvent.NOTF_ASSET_METADATA_READY - Dispatched when component receives asset metadata. s7sdk.event.StatusEvent

Parameters:
{String} type: Event name, for example s7sdk.event.StatusEvent.NOTF_ASSET_METADATA_READY.
{Function} handler: Function to be called when the event gets dispatched.
{Boolean} useCapture: Register capture phase.

{Boolean} canDownload()

Returns the result of PDF availability check. If a downloadable asset is available on the server, it will return true, otherwise it will be false.

Returns:: {Boolean} result of PDF availability check

setDownloadableAsset(downloadId)

Sets an explicit downloadable asset ID. This method overrides the default behavior and allows to pass custom ID of downloadable asset in cases when defaults will not work.

Parameters:
{String} downloadId: Explicitly sets downloadable asset ID.

setMediaSet(mediaSet)

Sets the media set of the primary asset used by application. The component will extract the name of the primary catalog, append "pdf" suffix and use it as default downloadable asset ID. The method call is ignored if an explicit downloadable asset ID was set using setDownloadableAsset() call.

Parameters:
{MediaSetDesc | OrientationSetDesc} mediaSet: Sets the media set of the primary asset.

See:: s7sdk.set.MediaSet; s7sdk.MediaSetDesc; s7sdk.OrientationSetDesc

Namespaces

Classes in s7sdk.common

Class s7sdk.common.Download