--- /dev/null
+package org.simantics.district.route.ui.handlers;
+
+import javax.inject.Named;
+
+import org.eclipse.e4.core.di.annotations.CanExecute;
+import org.eclipse.e4.core.di.annotations.Execute;
+import org.eclipse.e4.ui.model.application.ui.basic.MPart;
+import org.eclipse.e4.ui.services.IServiceConstants;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.ui.IEditorPart;
+import org.simantics.district.network.ui.DistrictDiagramEditor;
+import org.simantics.district.network.ui.participants.RoutingMode;
+import org.simantics.g2d.canvas.ICanvasContext;
+import org.simantics.modeling.ui.diagramEditor.DiagramViewer;
+import org.simantics.utils.ui.workbench.WorkbenchUtils;
+
+/**
+ * @author Jani Simomaa
+ */
+public class ActivateCreateRoute {
+
+ @CanExecute
+ public boolean canExecute(@Named(IServiceConstants.ACTIVE_SELECTION) ISelection selection) {
+ IEditorPart activeEditor = WorkbenchUtils.getActiveEditor();
+ if (activeEditor != null && activeEditor instanceof DistrictDiagramEditor) {
+ DistrictDiagramEditor editor = (DistrictDiagramEditor) activeEditor;
+ DiagramViewer viewer = editor.getAdapter(DiagramViewer.class);
+ ICanvasContext context = viewer.getAdapter(ICanvasContext.class);
+ RoutingMode routingMode = context.getAtMostOneItemOfClass(RoutingMode.class);
+ return routingMode == null;
+ }
+ return false;
+ }
+
+ @Execute
+ public void execute(@Named(IServiceConstants.ACTIVE_SHELL) Shell activeShell,
+ @Named(IServiceConstants.ACTIVE_PART) MPart part,
+ @Named(IServiceConstants.ACTIVE_SELECTION) ISelection selection) {
+
+ IEditorPart activeEditor = WorkbenchUtils.getActiveEditor();
+ if (activeEditor != null && activeEditor instanceof DistrictDiagramEditor) {
+ DistrictDiagramEditor editor = (DistrictDiagramEditor) activeEditor;
+ DiagramViewer viewer = editor.getAdapter(DiagramViewer.class);
+ ICanvasContext context = viewer.getAdapter(ICanvasContext.class);
+ RoutingMode routingMode = context.getAtMostOneItemOfClass(RoutingMode.class);
+ if (routingMode == null || routingMode.isRemoved()) {
+ routingMode = new RoutingMode(0);
+ context.add(routingMode);
+ }
+ }
+ }
+}
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