private void load_snap_from_xml(Element snap, StructureCollection structs, LinkedList tempList)
throws VisualizerLoadException {
Iterator iterator = snap.getChildren().iterator();
if (!iterator.hasNext()) throw new VisualizerLoadException("Ran out of elements");
structs.loadTitle((Element) (iterator.next()), tempList, this);
structs.calcDimsAndStartPts(tempList, this);
if (!iterator.hasNext()) return;
Element child = (Element) iterator.next();
if (child.getName().compareTo("doc_url") == 0) {
// load the doc_url
add_a_documentation_URL(child.getText().trim());
if (!iterator.hasNext()) return;
child = (Element) iterator.next();
}
if (child.getName().compareTo("pseudocode_url") == 0) {
// load the psuedocode_url
add_a_pseudocode_URL(child.getText().trim());
if (!iterator.hasNext()) return;
child = (Element) iterator.next();
}
if (child.getName().compareTo("audio_text") == 0) {
// load the psuedocode_url
add_audio_text(child.getText().trim());
if (!iterator.hasNext()) return;
child = (Element) iterator.next();
}
// create & load the individual structures, hooking them into the StructureCollection.
// linespernode : calculate it at end of loadStructure call
while (child.getName().compareTo("question_ref") != 0) {
StructureType child_struct = assignStructureType(child);
child_struct.loadStructure(child, tempList, this);
structs.addChild(child_struct);
if (!iterator.hasNext()) return;
child = (Element) iterator.next();
}
if (child.getName().compareTo("question_ref") == 0) {
// set up question ref
add_a_question_xml(child.getAttributeValue("ref"));
} else
// should never happen
throw new VisualizerLoadException(
"Expected question_ref element, but found " + child.getName());
if (iterator.hasNext()) {
child = (Element) iterator.next();
throw new VisualizerLoadException(
"Found " + child.getName() + " when expecting end of snap.");
}
} // load_snap_from_xml
// createericlist with a String signature is used to process a String
// containing a sequence of GAIGS structures
// createericlist creates the list of graphics primitives for these snapshot(s).
// After creating these lists, that are then appended to l, the list of snapshots,
// Also must return the number of snapshots loaded from the string
public /*synchronized*/ int createericlist(String structString) {
int numsnaps = 0;
if (debug) System.out.println("In create eric " + structString);
StringTokenizer st = new StringTokenizer(structString, "\r\n");
while (st.hasMoreTokens()) {
numsnaps++; // ??
String tempString;
LinkedList tempList = new LinkedList();
StructureType strct;
tempString = st.nextToken();
try {
boolean headers = true;
while (headers) {
headers = false;
if (tempString.toUpperCase().startsWith("VIEW")) {
tempString = HandleViewParams(tempString, tempList, st);
headers = true;
}
if (tempString.toUpperCase().startsWith("FIBQUESTION ")
|| tempString.toUpperCase().startsWith("MCQUESTION ")
|| tempString.toUpperCase().startsWith("MSQUESTION ")
|| tempString.toUpperCase().startsWith("TFQUESTION ")) {
tempString = add_a_question(tempString, st);
headers = true;
}
}
if (tempString.toUpperCase().equals("STARTQUESTIONS")) {
numsnaps--; // questions don't count as snapshots
readQuestions(st);
break;
}
// After returning from HandleViewParams, tempString should now contain
// the line with the structure type and possible additional text height info
StringTokenizer structLine = new StringTokenizer(tempString, " \t");
String structType = structLine.nextToken();
if (debug) System.out.println("About to assign structure" + structType);
strct = assignStructureType(structType);
strct.loadTextHeights(structLine, tempList, this);
strct.loadLinesPerNodeInfo(st, tempList, this);
strct.loadTitle(st, tempList, this);
strct.loadStructure(st, tempList, this);
strct.calcDimsAndStartPts(tempList, this);
strct.drawTitle(tempList, this);
strct.drawStructure(tempList, this);
} catch (VisualizerLoadException e) {
System.out.println(e.toString());
}
// // You've just created a snapshot. Need to insure that "**" is appended
// // to the URLList for this snapshot IF no VIEW ALGO line was parsed in the
// // string for the snapshot. This could probably best be done in the
// // HandleViewParams method
list_of_snapshots.append(tempList);
Snaps++;
}
return (numsnaps);
} // createericlist(string)