Java tutorial
/******************************************************************************* * Copyright 2000, 2013 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation * *******************************************************************************/ package org.eclipse.edt.ide.ui.internal.dialogs; import java.util.ArrayList; import org.eclipse.core.resources.IFolder; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerFilter; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.dialogs.ElementTreeSelectionDialog; import org.eclipse.edt.ide.ui.internal.packageexplorer.EGLElementContentProvider; import org.eclipse.edt.ide.ui.internal.packageexplorer.EGLElementLabelProvider; import org.eclipse.edt.ide.ui.internal.packageexplorer.EGLElementSorter; import org.eclipse.edt.ide.ui.internal.EGLLogger; import org.eclipse.edt.ide.ui.internal.UINlsStrings; import org.eclipse.edt.ide.ui.EDTUIPlugin; import org.eclipse.edt.ide.ui.internal.IUIHelpConstants; import org.eclipse.edt.ide.ui.internal.wizards.NewWizardMessages; import org.eclipse.edt.ide.ui.internal.wizards.TypedElementSelectionValidator; import org.eclipse.edt.ide.ui.internal.wizards.TypedViewerFilter; import org.eclipse.edt.ide.core.model.EGLCore; import org.eclipse.edt.ide.core.model.EGLModelException; import org.eclipse.edt.ide.core.model.IEGLElement; import org.eclipse.edt.ide.core.model.IEGLFile; import org.eclipse.edt.ide.core.model.IEGLModel; import org.eclipse.edt.ide.core.model.IEGLProject; import org.eclipse.edt.ide.core.model.IPackageFragment; import org.eclipse.edt.ide.core.model.IPackageFragmentRoot; public class MoveDialog extends ElementTreeSelectionDialog { Class[] acceptedClasses; TypedElementSelectionValidator validator; ViewerFilter filter; IEGLElement finitElement; /** * @param parent * @param labelProvider * @param contentProvider */ public MoveDialog(Shell parent, IEGLElement initElement) { super(parent, new EGLElementLabelProvider(EGLElementLabelProvider.SHOW_DEFAULT), new EGLElementContentProvider()); PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, IUIHelpConstants.EGL_MOVE_DIALOG); finitElement = initElement; initAcceptedClasses(initElement); initFiltersValidators(); setValidator(validator); setSorter(new EGLElementSorter()); setTitle(NewWizardMessages.EGLMoveDialogTitle); setMessage(NewWizardMessages.EGLMoveDialogMessage + " "); //$NON-NLS-1$ addFilter(filter); setInput(EGLCore.create(ResourcesPlugin.getWorkspace().getRoot())); setInitialSelection(initElement.getParent()); } protected TreeViewer createTreeViewer(Composite parent) { TreeViewer viewer = super.createTreeViewer(parent); //expand the tree to show the initial selection(the parent of the initElement) ArrayList elemlist = new ArrayList(); IEGLElement elem = finitElement.getParent(); while (!(elem instanceof IEGLModel)) { elemlist.add(0, elem); elem = elem.getParent(); } viewer.setExpandedElements(elemlist.toArray()); return viewer; } private void initAcceptedClasses(IEGLElement element) { if (element instanceof IPackageFragmentRoot) { acceptedClasses = new Class[] { IEGLProject.class }; } else if (element instanceof IPackageFragment) { acceptedClasses = new Class[] { IEGLProject.class, IPackageFragmentRoot.class }; } else if (element instanceof IEGLFile) { acceptedClasses = new Class[] { IEGLProject.class, IPackageFragmentRoot.class, IPackageFragment.class, IFolder.class }; } } private void initFiltersValidators() { validator = new TypedElementSelectionValidator(acceptedClasses, false) { public IStatus validate(Object[] selection) { int nSelected = selection.length; String pluginId = EDTUIPlugin.getDefault().getDescriptor().getUniqueIdentifier(); if (nSelected == 0) return new Status(IStatus.ERROR, pluginId, IStatus.ERROR, UINlsStrings.MoveDialog_validateMsg_NoSelection, null); //$NON-NLS-1$ if (nSelected > 1) return new Status(IStatus.ERROR, pluginId, IStatus.ERROR, UINlsStrings.MoveDialog_validateMsg_MultiDestination, null); Object element = selection[0]; try { if (element instanceof IEGLElement) { //should not try to move the element to the same container IEGLElement selectedElem = (IEGLElement) element; if (selectedElem.equals(finitElement.getParent())) return new Status(IStatus.ERROR, pluginId, IStatus.ERROR, UINlsStrings.MoveDialog_validateMsg_SameParent, null); } //EGLProject no longer is the src folder by default if ((element instanceof IEGLProject) && ((finitElement instanceof IEGLFile) || (finitElement instanceof IPackageFragment))) { IEGLProject eproject = (IEGLProject) element; IPath path = eproject.getProject().getFullPath(); if (eproject.findPackageFragmentRoot(path) == null) return new Status(IStatus.ERROR, pluginId, IStatus.ERROR, "", null); //$NON-NLS-1$ } if (element instanceof IPackageFragmentRoot) { if (((IPackageFragmentRoot) element).getKind() != IPackageFragmentRoot.K_SOURCE) return new Status(IStatus.ERROR, pluginId, IStatus.ERROR, "", null); //$NON-NLS-1$ } return super.validate(selection); } catch (EGLModelException e) { EGLLogger.log(this, e); } return new Status(IStatus.ERROR, pluginId, IStatus.ERROR, "", null); //$NON-NLS-1$ } }; filter = new TypedViewerFilter(acceptedClasses, null) { public boolean select(Viewer viewer, Object parent, Object element) { /* if (element instanceof IPackageFragmentRoot) { try { return (((IPackageFragmentRoot)element).getKind() == IPackageFragmentRoot.K_SOURCE); } catch (EGLModelException e) { EGLLogger.log(this, e); return false; } } */ return super.select(viewer, parent, element); } }; } }