package er.extensions.components;
import java.util.Enumeration;
import com.webobjects.appserver.WOApplication;
import com.webobjects.appserver.WOAssociation;
import com.webobjects.appserver.WOComponent;
import com.webobjects.appserver.WOContext;
import com.webobjects.appserver.WOElement;
import com.webobjects.appserver.WOResourceManager;
import com.webobjects.appserver.WOResponse;
import com.webobjects.appserver._private.WOGenericContainer;
import com.webobjects.appserver._private.WOURLValuedElementData;
import com.webobjects.foundation.NSData;
import com.webobjects.foundation.NSDictionary;
import com.webobjects.foundation.NSMutableDictionary;
/**
* Same as a WOGenericContainer, except that you can add individual style attributes by
* supplying <code>style.background-color="red"</code> bindings. This is sometimes preferable to
* putting all the styles in code.<br>
* If a normal <code>style</code> attribute is present, its value will be prepended. You can also
* define a background-image and a <code>style.background-image.type</code> (mime type of the image in case it is an NSData).
* Some fixing will be done for you, like you can give a <code>style.unit</code> which will be applied to all bindings
* that evalutate to a number. If none is supplied, "px" is appended to make size definitions settable via plain numerical bindings.
*
* @binding elementId The type of element (div, p, span, etc.) to generate
*
* @author ak
*/
public class ERXStyledContainer extends WOGenericContainer {
NSMutableDictionary _styles;
WOAssociation _style;
WOAssociation _mimeType;
WOAssociation _unit;
public ERXStyledContainer(String name, NSDictionary associations, WOElement template) {
super(name, associations, template);
_style = _associations.removeObjectForKey("style");
_styles = new NSMutableDictionary();
for (Enumeration enumerator = _associations.keyEnumerator(); enumerator.hasMoreElements();) {
String key = (String) enumerator.nextElement();
if(key.startsWith("style.")) {
String styleKey = key.substring(6);
WOAssociation association = _associations.removeObjectForKey(key);
if("background-image.type".equals(styleKey)) {
_mimeType = association;
} else if("unit".equals(styleKey)) {
_unit = association;
} else {
_styles.setObjectForKey(association, styleKey);
}
}
}
}
@Override
public void appendAttributesToResponse(WOResponse woresponse, WOContext wocontext) {
super.appendAttributesToResponse(woresponse, wocontext);
WOComponent component = wocontext.component();
StringBuilder style = new StringBuilder();
if(_style != null) {
String s = (String) _style.valueInComponent(component);
if(s != null) {
style.append(s);
style.append("; ");
}
}
if(_styles.count() > 0) {
for (Enumeration enumerator = _styles.keyEnumerator(); enumerator.hasMoreElements();) {
String key = (String) enumerator.nextElement();
WOAssociation association = (WOAssociation) _styles.objectForKey(key);
Object value = association.valueInComponent(component);
if(value != null) {
String stringValue;
if("background-image".equals(key)) {
if (value instanceof NSData) {
NSData data = (NSData) value;
WOResourceManager rm = WOApplication.application().resourceManager();
String mimeType = (String) (_mimeType != null ? _mimeType.valueInComponent(component) : "image/jpeg");
WOURLValuedElementData uve = new WOURLValuedElementData(data, mimeType, null);
rm._cacheData(uve);
stringValue = uve.dataURL(wocontext);
} else {
stringValue = value.toString();
}
if(stringValue.indexOf("url(") < 0) {
stringValue = "url(" + stringValue + ")";
}
} else {
stringValue = value.toString();
}
if(value instanceof Number) {
stringValue += (_unit != null ? _unit.valueInComponent(component) : "px");
}
style.append(key).append(": ").append(stringValue).append("; ");
}
}
}
if(style.length() > 0) {
woresponse._appendTagAttributeAndValue("style", style.toString(), false);
}
}
}