public void buttonClicked(ActionEvent e) {
CustomButtonNode currentButton = (CustomButtonNode) e.getSource();
if (currentButton.isExpanded()) {
collapseNode(currentButton);
} else {
expandNode(currentButton);
}
}
private void initializeInterface() {
ElementMold[] rootNodes = interfaceModelBuilder.getRootNodes();
for (int a = 0; a < rootNodes.length; a++) {
if (rootNodes[a].getInputType().equals("button")) {
CustomButtonNode nodeToAdd = buildButtonNode(rootNodes[a].getName(), null);
nodeToAdd.setLoaded(false);
nodeToAdd.setExpanded(false);
treeStructure.getChildren().add(nodeToAdd);
updateInterface();
}
}
}
private HtmlInputText buildInputTextField(CustomButtonNode parent) {
HtmlInputText text = new HtmlInputText();
text.setStyle("margin-left:" + (parent.getOffset() + 5) + "px;");
text.addValueChangeListener(
new ValueChangeListener() {
public void processValueChange(ValueChangeEvent e) throws AbortProcessingException {
valueChanged(e);
}
});
text.setPartialSubmit(true);
return text;
}
// called when a component is being expanded that has expanded child button nodes
private void expandChildrenOf(CustomButtonNode button) {
int index = treeStructure.getChildren().indexOf(button);
List children = button.getChildren();
// inserts node items into the appropriate positions in the panelGrid
// children collection
for (int a = 0; a < children.size(); a++) {
treeStructure.getChildren().add(index + 1 + a, (UIComponent) children.get(a));
}
// checks every child, if it is a button and its expanded state is set to true,
// recursively call the method to expand the child node
for (int a = 0; a < children.size(); a++) {
Object curChild = children.get(a);
if (curChild instanceof CustomButtonNode) {
CustomButtonNode curButton = (CustomButtonNode) curChild;
if (curButton.isExpanded()) {
this.expandChildrenOf(curButton);
}
}
}
}
// removes all children of the button from the panelGrid to give the appearance
// of the node collapsing
private void removeAllChildrenOf(CustomButtonNode button) {
List children = button.getChildren();
// removes every child of the button from the panel grid.
// If the node has child buttons that are also expanded, it recursively calls
// itself to remove their children as well
for (int a = 0; a < children.size(); a++) {
Object curChild = children.get(a);
if (curChild instanceof CustomButtonNode && ((CustomButtonNode) curChild).isExpanded()) {
removeAllChildrenOf((CustomButtonNode) curChild);
}
treeStructure.getChildren().remove(curChild);
}
}
private HtmlSelectOneMenu buildSelectBox(String[] opts, CustomButtonNode parent) {
HtmlSelectOneMenu newMenu = new HtmlSelectOneMenu();
for (int a = 0; a < opts.length; a++) {
UISelectItem item = new UISelectItem();
item.setItemValue(opts[a]);
newMenu.getChildren().add(item);
}
newMenu.setStyle("margin-left:" + (parent.getOffset() + 5) + "px;");
newMenu.addValueChangeListener(
new ValueChangeListener() {
public void processValueChange(ValueChangeEvent e) throws AbortProcessingException {
valueChanged(e);
}
});
newMenu.setPartialSubmit(true);
return newMenu;
}
// expands a node, updates its expansion state. updates its loaded state if
// applicable and updates the panelGrid
private void expandNode(CustomButtonNode button) {
// TODO: add an ordering attribute to the RDF file so the model returns the items
// in proper order
if (!button.isLoaded()) {
int index = treeStructure.getChildren().indexOf(button);
ElementMold[] fields = interfaceModelBuilder.getChildrenOf(button.getValue().toString());
HtmlPanelGroup childrenContainer = new HtmlPanelGroup();
for (int a = 0; a < fields.length; a++) {
if (fields[a].getInputType().equals("button")) {
CustomButtonNode newNode = this.buildButtonNode(fields[a].getName(), button);
button.getChildren().add(newNode);
}
}
for (int a = 0; a < fields.length; a++) {
if (fields[a].getInputType().equals("outputText")) {
HtmlOutputText newText = this.buildOutputTextField(fields[a].getText(), button);
childrenContainer.getChildren().add(newText);
}
}
for (int a = 0; a < fields.length; a++) {
if (fields[a].getInputType().equals("selectInput")) {
HtmlSelectOneMenu newSelector = this.buildSelectBox(fields[a].getOptions(), button);
childrenContainer.getChildren().add(newSelector);
}
}
for (int a = 0; a < fields.length; a++) {
if (fields[a].getInputType().equals("inputText")) {
HtmlInputText newText = this.buildInputTextField(button);
childrenContainer.getChildren().add(newText);
}
}
if (childrenContainer.getChildCount() > 0) {
button.getChildren().add(childrenContainer);
}
button.setLoaded(true);
treeStructure.getChildren().addAll(index + 1, button.getChildren());
} else {
expandChildrenOf(button);
}
button.setExpanded(true);
updateInterface();
}
private CustomButtonNode buildButtonNode(String btnName, CustomButtonNode parent) {
CustomButtonNode newButton = new CustomButtonNode();
newButton.setValue(btnName);
newButton.addActionListener(
new ActionListener() {
public void processAction(ActionEvent e) throws AbortProcessingException {
buttonClicked(e);
}
});
if (parent != null) {
newButton.setParentButton(parent);
newButton.setWidth(parent.getWidth() - 15);
newButton.setOffset(parent.getOffset() + 15);
} else {
newButton.setWidth(520);
newButton.setOffset(0);
}
// TODO: better to redesign interface model to support a CSS class with
// relative positioning for the offset
newButton.setStyle(
"width:"
+ newButton.getWidth()
+ "px; "
+ "margin-left:"
+ newButton.getOffset()
+ "px;"
+ "height:100%");
newButton.setPartialSubmit(true);
newButton.setId("treeButton" + treeButtonIncr);
treeButtonIncr++;
return newButton;
}
// collapses the node, updates its expansion state and updates the panelGrid component
private void collapseNode(CustomButtonNode button) {
this.removeAllChildrenOf(button);
button.setExpanded(false);
updateInterface();
}
private HtmlOutputText buildOutputTextField(String value, CustomButtonNode parent) {
HtmlOutputText text = new HtmlOutputText();
text.setValue(value);
text.setStyle("margin-left:" + (parent.getOffset() + 5) + "px;");
return text;
}