Java tutorial
// ============================================================================ // // Copyright (C) 2006-2015 Talend Inc. - www.talend.com // // This source code is available under agreement available at // %InstallDIR%\features\org.talend.rcp.branding.%PRODUCTNAME%\%PRODUCTNAME%license.txt // // You should have received a copy of the agreement // along with this program; if not, write to Talend SA // 9 rue Pages 92150 Suresnes, France // // ============================================================================ package org.talend.designer.core.ui.action; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import org.eclipse.gef.EditPart; import org.eclipse.gef.RequestConstants; import org.eclipse.gef.commands.Command; import org.eclipse.gef.commands.CompoundCommand; import org.eclipse.gef.requests.GroupRequest; import org.eclipse.gef.ui.actions.DeleteAction; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.dialogs.MessageDialogWithToggle; import org.eclipse.jface.preference.IPreferenceStore; import org.eclipse.ui.IWorkbenchPart; import org.talend.core.GlobalServiceRegister; import org.talend.core.model.components.IComponent; import org.talend.core.model.process.IProcess; import org.talend.core.ui.IJobletProviderService; import org.talend.designer.core.DesignerPlugin; import org.talend.designer.core.i18n.Messages; import org.talend.designer.core.model.process.AbstractProcessProvider; import org.talend.designer.core.ui.editor.connections.ConnLabelEditPart; import org.talend.designer.core.ui.editor.connections.ConnectionPart; import org.talend.designer.core.ui.editor.jobletcontainer.JobletContainer; import org.talend.designer.core.ui.editor.jobletcontainer.JobletContainerFigure; import org.talend.designer.core.ui.editor.jobletcontainer.JobletContainerPart; import org.talend.designer.core.ui.editor.nodecontainer.NodeContainerPart; import org.talend.designer.core.ui.editor.nodes.Node; import org.talend.designer.core.ui.editor.nodes.NodePart; import org.talend.designer.core.ui.editor.notes.NoteEditPart; import org.talend.designer.core.ui.editor.process.ProcessPart; import org.talend.designer.core.ui.editor.subjobcontainer.SubjobContainerPart; import org.talend.designer.core.ui.preferences.TalendDesignerPrefConstants; /** * Modification of the delete action to enhance the speed of the action from GEF. <br/> * * $Id: talend-code-templates.xml 1 2006-09-29 17:06:40 +0000 (ven., 29 sept. 2006) nrousseau $ * */ public class GEFDeleteAction extends DeleteAction { public GEFDeleteAction(IWorkbenchPart part) { super(part); } @Override protected boolean calculateEnabled() { List objects = getSelectedObjects(); if (objects.isEmpty() || (objects.size() == 1 && objects.get(0) instanceof ProcessPart)) { return false; } if (!(objects.get(0) instanceof EditPart)) { return false; } AbstractProcessProvider pProvider = AbstractProcessProvider .findProcessProviderFromPID(IComponent.JOBLET_PID); if (pProvider != null) { boolean allJobletnode = true; boolean hasNode = false; for (Object o : objects) { if (o instanceof NodePart) { hasNode = true; Node no = (Node) ((NodePart) o).getModel(); if (no.getJobletNode() == null) { allJobletnode = false; } if (!pProvider.canDeleteNode(no)) { return false; } } } if (allJobletnode && hasNode) { return false; } } return true; } public static List filterSameObject(List list) { List newList = new ArrayList(); for (Object object : list) { if (!newList.contains(object)) { newList.add(object); } } return newList; } @Override public Command createDeleteCommand(List objects) { objects = filterSameObject(objects); if (objects.isEmpty()) { return null; } if (!(objects.get(0) instanceof EditPart)) { return null; } EditPart object = (EditPart) objects.get(0); // for TUP-1015 boolean isConnAttachedJLTriggerComp = false; ConnectionPart connectionPart = null; if (object instanceof ConnectionPart) { connectionPart = (ConnectionPart) object; } else if (object instanceof ConnLabelEditPart) { connectionPart = (ConnectionPart) object.getParent(); } if (connectionPart != null) { Node srcNode = null; Object srcModel = connectionPart.getSource().getModel(); if (srcModel instanceof Node) { srcNode = (Node) srcModel; } Node tarNode = null; Object tarModel = connectionPart.getTarget().getModel(); if (tarModel instanceof Node) { tarNode = (Node) tarModel; } if (srcNode == null || tarNode == null) { return null; } IProcess process = srcNode.getProcess(); if (AbstractProcessProvider.isExtensionProcessForJoblet(process)) { IJobletProviderService service = (IJobletProviderService) GlobalServiceRegister.getDefault() .getService(IJobletProviderService.class); if (service != null && (service.isTriggerNode(srcNode) || service.isTriggerNode(tarNode))) { isConnAttachedJLTriggerComp = true; } } } IPreferenceStore preferenceStore = DesignerPlugin.getDefault().getPreferenceStore(); String preKey = TalendDesignerPrefConstants.NOT_SHOW_WARNING_WHEN_DELETE_LINK_WITH_JOBLETTRIGGERLINKCOMPONENT; if (isConnAttachedJLTriggerComp && !preferenceStore.getBoolean(preKey)) { MessageDialogWithToggle jlTriggerConfirmDialog = new MessageDialogWithToggle(null, Messages.getString("GEFDeleteAction.deleteConnectionDialog.title"), //$NON-NLS-1$ null, // accept the default window icon Messages.getString("GEFDeleteAction.deleteConnectionDialog.msg"), MessageDialog.WARNING, //$NON-NLS-1$ new String[] { IDialogConstants.YES_LABEL, IDialogConstants.NO_LABEL }, 0, Messages.getString("GEFDeleteAction.deleteConnectionDialog.toggleMsg"), //$NON-NLS-1$ preferenceStore.getDefaultBoolean(preKey)); jlTriggerConfirmDialog.setPrefStore(preferenceStore); jlTriggerConfirmDialog.setPrefKey(preKey); if (jlTriggerConfirmDialog.open() != IDialogConstants.YES_ID) { return null; } preferenceStore.setValue(preKey, jlTriggerConfirmDialog.getToggleState()); } List nodeParts = new ArrayList(); List noteParts = new ArrayList(); List others = new ArrayList(objects); for (Object o : objects) { if (o instanceof NodePart) { others.remove(o); Node model = (Node) ((NodePart) o).getModel(); if (model.getJobletNode() != null) { continue; } nodeParts.add(o); } else if (o instanceof NoteEditPart) { noteParts.add(o); others.remove(o); } else if (o instanceof SubjobContainerPart) { others.remove(o); SubjobContainerPart subjob = (SubjobContainerPart) o; for (Iterator iterator = subjob.getChildren().iterator(); iterator.hasNext();) { NodeContainerPart nodeContainerPart = (NodeContainerPart) iterator.next(); if (nodeContainerPart instanceof JobletContainerPart) { JobletContainer jobletCon = (JobletContainer) ((JobletContainerPart) nodeContainerPart) .getModel(); JobletContainerFigure jobletFigure = (JobletContainerFigure) ((JobletContainerPart) nodeContainerPart) .getFigure(); if (!jobletCon.isCollapsed()) { jobletFigure.doCollapse(); } } NodePart nodePart = nodeContainerPart.getNodePart(); if (nodePart != null) { nodeParts.add(nodePart); } } } } if (others.size() == 0) { // so notes & nodes only CompoundCommand cpdCmd = new CompoundCommand(); cpdCmd.setLabel(Messages.getString("GEFDeleteAction.DeleteItems")); //$NON-NLS-1$ if (nodeParts.size() != 0) { GroupRequest deleteReq = new GroupRequest(RequestConstants.REQ_DELETE); deleteReq.setEditParts(nodeParts); cpdCmd.add(((NodePart) nodeParts.get(0)).getCommand(deleteReq)); } if (noteParts.size() != 0) { GroupRequest deleteReq = new GroupRequest(RequestConstants.REQ_DELETE); deleteReq.setEditParts(noteParts); cpdCmd.add(((NoteEditPart) noteParts.get(0)).getCommand(deleteReq)); } return cpdCmd; } else { GroupRequest deleteReq = new GroupRequest(RequestConstants.REQ_DELETE); deleteReq.setEditParts(objects); Command cmd = object.getCommand(deleteReq); return cmd; } } }