Returns an AttributeDescriptor array that depends on the current UiParent.
The array merges both "direct" attributes with the descriptor layout attributes.
The array instance is cached and cleared if the UiParent is changed.
if (mCachedAttributeDescriptors != null) {
return mCachedAttributeDescriptors;
}
UiElementNode ui_parent = getUiParent();
AttributeDescriptor[] direct_attrs = super.getAttributeDescriptors();
mCachedAttributeDescriptors = direct_attrs;
AttributeDescriptor[] layout_attrs = null;
boolean need_xmlns = false;
if (ui_parent instanceof UiDocumentNode) {
// Limitation: right now the layout behaves as if everything was
// owned by a FrameLayout.
// TODO replace by something user-configurable.
List<ElementDescriptor> layoutDescriptors = null;
IProject project = getEditor().getProject();
if (project != null) {
Sdk currentSdk = Sdk.getCurrent();
IAndroidTarget target = currentSdk.getTarget(project);
if (target != null) {
AndroidTargetData data = currentSdk.getTargetData(target);
layoutDescriptors = data.getLayoutDescriptors().getLayoutDescriptors();
}
}
if (layoutDescriptors != null) {
for (ElementDescriptor desc : layoutDescriptors) {
if (desc instanceof ViewElementDescriptor &&
desc.getXmlName().equals(AndroidConstants.CLASS_NAME_FRAMELAYOUT)) {
layout_attrs = ((ViewElementDescriptor) desc).getLayoutAttributes();
need_xmlns = true;
break;
}
}
}
} else if (ui_parent instanceof UiViewElementNode){
layout_attrs =
((ViewElementDescriptor) ui_parent.getDescriptor()).getLayoutAttributes();
}
if (layout_attrs == null || layout_attrs.length == 0) {
return mCachedAttributeDescriptors;
}
mCachedAttributeDescriptors =
new AttributeDescriptor[direct_attrs.length +
layout_attrs.length +
(need_xmlns ? 1 : 0)];
System.arraycopy(direct_attrs, 0,
mCachedAttributeDescriptors, 0,
direct_attrs.length);
System.arraycopy(layout_attrs, 0,
mCachedAttributeDescriptors, direct_attrs.length,
layout_attrs.length);
if (need_xmlns) {
AttributeDescriptor desc = new XmlnsAttributeDescriptor(
"android", //$NON-NLS-1$
SdkConstants.NS_RESOURCES);
mCachedAttributeDescriptors[direct_attrs.length + layout_attrs.length] = desc;
}
return mCachedAttributeDescriptors;
