We are using an excellent page designer who is doing all layout with css.
She has two "default" stylesheets that are used on every page plus
each page has a context specific stylesheet.
ie. every page includes 'template.css' and 'tags.css' and say, all
student pages use a 'student.css'
In our case we want each page to specify all the stylesheets (incl the
defaults) that are applicable to that page.
I have made a border component that contains a Shell. All stylesheets
in the system (6) are declared as named assets in the Border
component.
in Border.jwc...
<property-specification name="styleSheets"
type="org.apache.tapestry.IAsset[]"/>
<component id="shell" type="Shell">
...
<binding name="stylesheets" expression="styleSheets"/>
...
</component>
<context-asset name="templatecss" path="/css/template.css"/>
<context-asset name="tagcss" path="/css/tag.css"/>
<context-asset name="loginoutcss" path="/css/loginout.css"/>
<context-asset name="studentcss" path="/css/student.css"/>
<context-asset name="testcss" path="/css/test.css"/>
<context-asset name="parentcss" path="/css/parent.css"/>
and in Border.java:
/**
* Prevent the Shell component from throwing NPE for missing stylesheet
asset
*/
private static final IAsset NULL_ASSET = new IAsset() {
public String buildURL(IRequestCycle cycle) {
return "";
}
.....
};
public abstract void setStyleSheets(IAsset[] stylesheets);
public abstract IAsset[] getStyleSheets();
public void pageBeginRender(PageEvent event) {
if (getStyleSheets() == null) {
computeStylesheets();
}
}
private void computeStylesheets() {
IPage page = getPage();
String sheetnames =
page.getSpecification().getProperty("stylesheets");
if (sheetnames == null) {
LOG.warn("no stylesheets found for page:" +
page.getPageName());
setStyleSheets(null);
return;
}
StringTokenizer tok = new StringTokenizer(sheetnames, ",");
int tokenCount = tok.countTokens();
IAsset[] sheets = new IAsset[tokenCount];
if (sheets.length == 0) {
LOG.warn("could not parse 'stylesheets' property:'" +
sheetnames
+ "' for page:" + page.getPageName());
setStyleSheets(null);
return;
}
for (int i = 0; i < tokenCount; i++) {
String name = tok.nextToken();
sheets[i] = getAsset(name);
if (sheets[i] == null) {
sheets[i] = NULL_ASSET;
LOG
.warn("missing stylesheet: '"
+ name
+ "'. No
corresponding asset found in Border component.");
}
}
setStyleSheets(sheets);
}
and on each page we have property that tells the Border which
stylesheet assets are needed for that page: (from WelcomeParent.page)
<property name="stylesheets">
templatecss,tagcss,parentcss
</property>
On 7/21/05, Kevin Menard <[EMAIL PROTECTED]> wrote:
>
> On Jul 19, 2005, at 11:32 AM, Mikaël Cluseau wrote:
>
> > ??? why aren't you adding a css parameter to your Border with a
> > default
> > value?
>
> How would this achieve what I am looking for? All this does is shift
> my getStylesheet() from my own base page class to a setStylesheet()
> method in my Border component. This hardly seems any easier.
>
> Please feel free to correct.
>
> --
> Kevin
>
>
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