/** Forwards a graph event to anyone listening. */
public void forwardGraph(GraphEventObject e) {
List l;
// GraphEventObject weo = new GraphEventObject(this,e);
synchronized (this) {
l = (List) ((ArrayList) graphListeners).clone();
}
for (int i = 0; i < l.size(); i++) {
GraphListener wl = (GraphListener) l.get(i);
wl.handleGraph(e);
}
}
private void removeNonVisibleItems(final int dx) {
View child = getChildAt(0);
while (child != null && child.getRight() + dx <= 0) {
mDisplayOffset += child.getMeasuredWidth();
mRemovedViewQueue.offer(child);
removeViewInLayout(child);
mLeftViewIndex++;
if (mGraphListener != null && child != null) mGraphListener.viewRemoved(child);
child = getChildAt(0);
}
child = getChildAt(getChildCount() - 1);
while (child != null && child.getLeft() + dx >= getWidth()) {
mRemovedViewQueue.offer(child);
removeViewInLayout(child);
mRightViewIndex--;
if (mGraphListener != null && child != null) mGraphListener.viewRemoved(child);
child = getChildAt(getChildCount() - 1);
}
}
private void fillListLeft(int leftEdge, final int dx) {
while (leftEdge + dx > 0 && mLeftViewIndex >= 0) {
View child = mAdapter.getView(mLeftViewIndex, mRemovedViewQueue.poll(), this);
addAndMeasureChild(child, 0);
leftEdge -= child.getMeasuredWidth();
mLeftViewIndex--;
mDisplayOffset -= child.getMeasuredWidth();
if (mGraphListener != null && child != null) mGraphListener.viewAdded(child);
}
}
private void fillListRight(int rightEdge, final int dx) {
while (rightEdge + dx < getWidth() && mRightViewIndex < mAdapter.getCount()) {
View child = mAdapter.getView(mRightViewIndex, mRemovedViewQueue.poll(), this);
addAndMeasureChild(child, -1);
rightEdge += child.getMeasuredWidth();
if (mRightViewIndex == mAdapter.getCount() - 1) {
mMaxX = mCurrentX + rightEdge - getWidth();
}
if (mMaxX < 0) {
mMaxX = 0;
}
mRightViewIndex++;
if (mGraphListener != null && child != null) mGraphListener.viewAdded(child);
}
}
/** Notify listeners (GraphViewer and Layouter) of arc addition to graph model */
public void notifyArcAddtion(Arc anArc) {
for (GraphListener observer : observers) {
observer.arcAdded(anArc);
}
}
/** Notify listeners (GraphViewer and Layouter) of node deletion from graph model */
public void notifyNodeDeletion(Node aNode) {
for (GraphListener observer : observers) {
observer.nodeDeleted(aNode);
}
}
/** Notify listeners (GraphViewer and Layouter) that graph model is cleared */
public void notifyGraphErased() {
for (GraphListener observer : observers) {
observer.graphErased();
}
}
private void disconnect() {
graph.removeGraphListener(graphListener);
for (GraphItem item : items()) {
graphListener.itemRemoved(graph, item);
}
}
private void connect() {
graph.addGraphListener(graphListener);
for (GraphItem item : items()) {
graphListener.itemAdded(graph, item);
}
}
/**
* Сообщает подписчикам сообщение
*
* @param event Сообщение
*/
protected void fireGraphEvent(GraphEvent<N, E> event) {
for (GraphListener listener : listeners) {
listener.graphEvent(event);
}
}