// Update Undo/Redo Button State based on Undo Manager
protected void updateHistoryButtons() {
// The View Argument Defines the Context
editor.mainToolBar.setActionEnabled(
MainActions.ACTION_UNDO, undoManager.canUndo(graph.getGraphLayoutCache()));
editor.mainToolBar.setActionEnabled(
MainActions.ACTION_REDO, undoManager.canRedo(graph.getGraphLayoutCache()));
}
/** 重做上一步 */
public void redo() {
if (undoManager == null) return;
try {
undoManager.redo(graph.getGraphLayoutCache());
} catch (Exception ex) {
System.err.println(ex);
} finally {
updateHistoryButtons();
}
}
/** 组合选中的元素 */
public void groupSelectedCells() {
Object[] cells = graph.getSelectionCells();
// Order Cells by Model Layering
cells = graph.order(cells);
// If Any Cells in View
if (cells != null && cells.length > 0) {
DefaultGraphCell group = new DefaultGraphCell();
// Insert into model
graph.getGraphLayoutCache().insertGroup(group, cells);
}
}
/**
* 连接两个Port
*
* @param source
* @param target
*/
public void connect(Port source, Port target) {
for (Iterator it = source.edges(); it.hasNext(); ) {
Edge e = (Edge) it.next();
if (e.getTarget() == target) {
this.repaint();
return;
}
}
// Construct Edge with no label
DefaultEdge edge = new DefaultEdge();
if (graph.getModel().acceptsSource(edge, source)
&& graph.getModel().acceptsTarget(edge, target)) {
edge.setUserObject(new FlowEdgeObject(edge));
// Create a Map thath holds the attributes for the edge
edge.getAttributes().applyMap(createEdgeAttributes());
// Insert the Edge and its Attributes
graph.getGraphLayoutCache().insertEdge(edge, source, target);
// 添加到树结构
// editor.strutcView.addFlowRoute(graph, edge);
}
}
/** 将选中的元素往下一层 */
public void toBack() {
graph.getGraphLayoutCache().toBack(graph.getSelectionCells());
}
/** 将选中的元素往上一层 */
public void toFront() {
graph.getGraphLayoutCache().toFront(graph.getSelectionCells());
}
/** 取消元素的组合 */
public void ungroupSelectedCells() {
graph.getGraphLayoutCache().ungroup(graph.getSelectionCells());
}