package com.minres.scviewer.e4.application.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.workbench.modeling.EPartService; import org.eclipse.e4.ui.workbench.modeling.ESelectionService; import com.minres.scviewer.database.ITx; import com.minres.scviewer.database.swt.GotoDirection; import com.minres.scviewer.e4.application.parts.WaveformViewerPart; public class NavigateTrans { final static String PARAMTER_ID="com.minres.scviewer.e4.application.command.navigateTransCommand.parameter.dir"; @CanExecute public Boolean canExecute(ESelectionService selectionService){ Object o = selectionService.getSelection(); return o instanceof ITx; } @Execute public void execute(@Named(PARAMTER_ID) String param, EPartService partService) { MPart part = partService.getActivePart(); Object obj = part.getObject(); if(obj instanceof WaveformViewerPart){ if("next".equalsIgnoreCase(param)) ((WaveformViewerPart)obj).moveSelection(GotoDirection.NEXT); else if("prev".equalsIgnoreCase(param)) ((WaveformViewerPart)obj).moveSelection(GotoDirection.PREV); } } }