Provides the outer 'shell' of a page, including the <html>, <head> and
<title> tags, but not the <body> tag (which is typically provided by a
Body
component).
Most Tapestry pages will include a Shell component enclosing a Body component. The Shell is used to resolve the page's HTML stylesheet and the Body component manages dynamically generated JavaScript.
When designing the look and feel of a Tapestry page, include the normal HTML
elements before the Shell component, including a <link rel="stylesheet">
element, so that the page will render normally in a web browser, but use a
<span jwcid="$content$"> around the actual content.
See also: org.apache.tapestry.html.Shell , Body , PageLink
| Name | Type | Direction | Required | Default | Description |
|---|---|---|---|---|---|
| title | String | in | yes | The title for the page, used to render the <title> tag. | |
| raw | boolean | in | no | false | If false (the default), then HTML characters in the title are escaped. If true, then value is emitted exactly as is. |
| stylesheet | IAsset | in | no | If provided, then a <link> to the stylesheet is generated. | |
| stylesheets | Array or collection of IAsset | in | no | If provided, then <link> elements are created for each stylesheet asset. | |
| doctype | String | in | no | HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd" | Used to specify the full definition of the DOCTYPE element in the response page. |
| renderContentType | boolean | in | no | true | If true (the default), then a <meta> tag will be written to set the content type of the page. |
| refresh | int | in | no | If provided, then a <meta> tag will be written to cause a page refresh. The parameter value is the number of seconds before the refresh. | |
| disableCaching | boolean | in | no | false | If provided, then a <meta> tag will be written setting the content="nocache" value to try and prevent browser caching of page. |
| delegate | IRender | in | no | If specified, the delegate is rendered before the close of the <head> tag. Typically, this is used to provide additional <meta> tags. | |
| renderBaseTag | boolean | in | no | true | Specifies whether or not to render the html BASE tag element in the document HEAD. |
| ajaxDelegate | IRender | in | no | AjaxShellDelegate | If specified, allows for the default ajaxDelegate that renders the dojo script includes to be overriden. |
| browserLogLevel | String - One of [DEBUG,INFO,WARNING,ERROR,CRITICAL] | in | no | WARNING |
Sets the default browser based javascript log level to use to debug client side
interactions. If you specify an html element id to place the debug content it will be
written there. Otherwise, the default is to write to an element with id "debug", or append to
the document body if none exists.
See the dojo docs for more information about logging, but the basic idea is that you can write
statements like |
| debugEnabled | boolean | in | no | true | Turns browser level logging completely on/off. |
| debugContainerId | String | in | no | debug |
Sets the html element node id of the element you would like all browser debug content to
go to, if you have logging turned on.
For example, if you had an element on your html page with id="myElement" you would set the debugContainerId to "myElement". |
| parseWidgets | boolean | in | no | false | Tells dojo whether or not to parse widgets by traversing the entire dom node of your document. It is highly reccomended that you keep this at its default value of false. |
| tapestrySource | IAsset | in | false | classpath:/tapestry/core.js | Controls what the root source inclusion is for tapestry javascript packages. Override if you want to replace the built in defaults with a version of your own. |
| dojoSource | IAsset | in | false | classpath:/dojo/dojo.js | Controls what the root source inclusion is for the dojo javascript packages. Override if you want to replace the built in defaults with a version of your own. |
| dojoPath | IAsset | in | false | classpath:/dojo/ |
Specifies the default path to the root dojo folder, not the dojo.js file itself. This
is used by the djConfig.baseRelativePath javascript configuration property in dojo
to resolve relative resource includes - like widgets/images/js/css/etc..
|
Body: allowed
Informal parameters: forbidden
Reserved parameters: none
The Shell component is used here to provide the page's stylesheet and title.
In this example, the Login.html template is in the login subdirectory of the root application context. The stylesheet is within the styles directory, below the root application context.
login/Login.html:
<html> <head> <link rel="stylesheet" type="text/css" href="../styles/style.css"/> <title>MyCorp Customer Login</title> </head> <span jwcid="$content$"> <span jwcid="@Shell" stylesheet="asset:stylesheet" title="MyCorp Customer Login"> <body jwcid="@Body"> <h1>Customer Login</h1> Welcome to MyCorp's Customer Portal secure login page. . . . </body> </span> </span> </html>
WEB-INF/login/Login.page:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE page-specification PUBLIC "-//Apache Software Foundation//Tapestry Specification 4.0//EN" "http://tapestry.apache.org/dtd/Tapestry_4_0.dtd"> <page-specification> . . . <asset name="stylesheet" path="styles/style.css"/> </page-specification>
Note that for page and component specifications stored in the web application context (even under WEB-INF), relative asset paths are computed from the root application context directory .