/**
* Determine whether the position is at node's edge. When the offset is at edge, it is in the
* leftmost or rightmost offset of node's region.
*
* @param position
* @param forward
* @return true if at edge
*/
boolean atEdge(IDOMPosition position, boolean forward) {
Node node = position.getContainerNode();
int offset = position.getOffset();
if (forward) {
if (EditModelQuery.isText(node)) {
return offset == node.getNodeValue().length();
}
return offset == node.getChildNodes().getLength();
}
return offset == 0;
}
/**
* Create IDOMPosition based on Indexed 'position' in model. If node at position is text, use
* position to calculate DOMPosition offset, otherwize, simply create position pointed to
* container's children list's edge.
*
* @param model
* @param position
* @param adjust
* @return the dom position
*/
public IDOMPosition createDomposition1(IDOMModel model, int position, boolean adjust) {
try {
// get the container
Object object = getPosNode(model, position);
if (object == null && position > 0) {
// The end of file?
object = getPosNode(model, position - 1);
}
Node container = null;
if (object == null) {
// empty file?
return new DOMPosition(model.getDocument(), 0);
}
container = (Node) object;
Object oppNode = getPosNode(model, position - 1);
if (oppNode != null
&& !EditModelQuery.isChild((Node) oppNode, container)
&& //
!EditModelQuery.isInline(container)
&& EditModelQuery.isInline((Node) oppNode)) {
container = (Node) oppNode;
}
int location = EditHelper.getInstance().getLocation(container, position, false);
IDOMPosition result = null;
switch (location) {
case 1:
case 2:
result = new DOMRefPosition(container, false);
break;
case 4:
case 5:
result = new DOMRefPosition(container, true);
break;
case 3:
if (EditModelQuery.isText(container)) {
result =
new DOMPosition(container, position - EditModelQuery.getNodeStartIndex(container));
} else {
result = new DOMPosition(container, container.getChildNodes().getLength());
}
}
return result;
} catch (Exception e) {
// "Error in position creation"
_log.error("Error.EditModelQuery.0" + e); // $NON-NLS-1$
return null;
}
}