/** A menu popup trigger has been detected. Handle it. */
public void handlePopupTrigger(MouseEvent evt) {
int clickX = evt.getX();
int clickY = evt.getY();
SelectableGraphElement clickedElement = graph.findGraphElement(clickX, clickY);
if (clickedElement != null) {
selection.selectOnly(clickedElement);
postMenu(clickedElement, clickX, clickY);
} else {
postMenu(clickX, clickY);
}
}
/** A mouse-pressed event. Analyse what we should do with it. */
public void mousePressed(MouseEvent evt) {
graphEditor.requestFocus();
int clickX = evt.getX();
int clickY = evt.getY();
SelectableGraphElement clickedElement = graph.findGraphElement(clickX, clickY);
notifyPackage(clickedElement);
if (clickedElement == null) { // nothing hit
if (!isMultiselectionKeyDown(evt)) {
selection.clear();
}
if (isButtonOne(evt)) marquee.start(clickX, clickY);
} else if (isButtonOne(evt)) { // clicked on something
if (isMultiselectionKeyDown(evt)) {
// a class was clicked, while multiselectionKey was down.
if (clickedElement.isSelected()) {
selection.remove(clickedElement);
} else {
selection.add(clickedElement);
}
} else {
// a class was clicked without multiselection
if (!clickedElement.isSelected()) {
selection.selectOnly(clickedElement);
}
}
if (isDrawingDependency()) {
if (clickedElement instanceof Target)
rubberBand = new RubberBand(clickX, clickY, clickX, clickY);
} else {
dragStartX = clickX;
dragStartY = clickY;
if (clickedElement.isHandle(clickX, clickY)) {
resizing = true;
} else {
moving = true;
}
}
}
}
/**
* Post the context menu of one selected element of the current selection. If any dependencies are
* selected, show the menu for one of those. Otherwise show the menu for a randomly chosen target.
*/
private void postMenu() {
// first check whether we have selected edges
Dependency dependency = (Dependency) selection.getAnyEdge();
if (dependency != null) {
Point p =
((GraphPainterStdImpl) GraphPainterStdImpl.getInstance())
.getDependencyPainter(dependency)
.getPopupMenuPosition(dependency);
postMenu(dependency, p.x, p.y);
} else {
// if not, choose a target
Vertex vertex = selection.getAnyVertex();
if (vertex != null) {
selection.selectOnly(vertex);
int x = vertex.getX() + vertex.getWidth() - 20;
int y = vertex.getY() + 20;
postMenu(vertex, x, y);
}
}
}
private void selectDependency(KeyEvent evt) {
Vertex vertex = selection.getAnyVertex();
if (vertex != null && vertex instanceof DependentTarget) {
selection.selectOnly(vertex);
List<Dependency> dependencies = ((DependentTarget) vertex).dependentsAsList();
Dependency currentDependency = dependencies.get(currentDependencyIndex);
if (currentDependency != null) {
selection.remove(currentDependency);
}
currentDependencyIndex += (evt.getKeyCode() == KeyEvent.VK_PAGE_UP ? 1 : -1);
currentDependencyIndex %= dependencies.size();
if (currentDependencyIndex < 0) { // % is not a real modulo
currentDependencyIndex = dependencies.size() - 1;
}
currentDependency = (Dependency) dependencies.get(currentDependencyIndex);
if (currentDependency != null) {
selection.add(currentDependency);
}
}
}
/**
* Move the current selection to another selected class, depending on current selection and the
* key pressed.
*/
private void navigate(KeyEvent evt) {
Vertex currentTarget = findSingleVertex();
currentTarget = traverseStragegiImpl.findNextVertex(graph, currentTarget, evt.getKeyCode());
selection.selectOnly(currentTarget);
}