/** 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;
}
}
}
}
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);
}
}
}
/** Clear the current selection. */
public void removeFromSelection(SelectableGraphElement element) {
selection.remove(element);
}