| /******************************************************************************* |
| * Copyright (c) 2000, 2010 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.jdt.internal.ui.actions; |
| |
| import org.eclipse.swt.widgets.Shell; |
| |
| import org.eclipse.core.runtime.CoreException; |
| |
| import org.eclipse.core.resources.IFolder; |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.resources.IProjectNature; |
| import org.eclipse.core.resources.IResource; |
| |
| 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.texteditor.AbstractDecoratedTextEditorPreferenceConstants; |
| |
| import org.eclipse.ui.editors.text.EditorsUI; |
| |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jdt.core.IPackageFragment; |
| import org.eclipse.jdt.core.IPackageFragmentRoot; |
| import org.eclipse.jdt.core.JavaCore; |
| |
| import org.eclipse.jdt.internal.corext.refactoring.util.ResourceUtil; |
| import org.eclipse.jdt.internal.corext.util.Messages; |
| |
| import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor; |
| import org.eclipse.jdt.internal.ui.viewsupport.BasicElementLabels; |
| |
| /* |
| * http://dev.eclipse.org/bugs/show_bug.cgi?id=19104 |
| */ |
| public class ActionUtil { |
| |
| private ActionUtil(){ |
| } |
| |
| //bug 31998 we will have to disable renaming of linked packages (and cus) |
| public static boolean mustDisableJavaModelAction(Shell shell, Object element) { |
| if (!(element instanceof IPackageFragment) && !(element instanceof IPackageFragmentRoot)) |
| return false; |
| |
| IResource resource= ResourceUtil.getResource(element); |
| if ((resource == null) || (! (resource instanceof IFolder)) || (! resource.isLinked())) |
| return false; |
| |
| MessageDialog.openInformation(shell, ActionMessages.ActionUtil_not_possible, ActionMessages.ActionUtil_no_linked); |
| return true; |
| } |
| |
| public static boolean isProcessable(JavaEditor editor) { |
| if (editor == null) |
| return true; |
| Shell shell= editor.getSite().getShell(); |
| IJavaElement input= SelectionConverter.getInput(editor); |
| // if a Java editor doesn't have an input of type Java element |
| // then it is for sure not on the build path |
| if (input == null) { |
| MessageDialog.openInformation(shell, |
| ActionMessages.ActionUtil_notOnBuildPath_title, |
| ActionMessages.ActionUtil_notOnBuildPath_message); |
| return false; |
| } |
| return isProcessable(shell, input); |
| } |
| |
| public static boolean isProcessable(Shell shell, IJavaElement element) { |
| if (element == null) |
| return true; |
| if (isOnBuildPath(element)) |
| return true; |
| MessageDialog.openInformation(shell, |
| ActionMessages.ActionUtil_notOnBuildPath_title, |
| ActionMessages.ActionUtil_notOnBuildPath_message); |
| return false; |
| } |
| |
| public static boolean isOnBuildPath(IJavaElement element) { |
| //fix for bug http://dev.eclipse.org/bugs/show_bug.cgi?id=20051 |
| if (element.getElementType() == IJavaElement.JAVA_PROJECT) |
| return true; |
| IJavaProject project= element.getJavaProject(); |
| try { |
| if (!project.isOnClasspath(element)) |
| return false; |
| IProject resourceProject= project.getProject(); |
| if (resourceProject == null) |
| return false; |
| IProjectNature nature= resourceProject.getNature(JavaCore.NATURE_ID); |
| // We have a Java project |
| if (nature != null) |
| return true; |
| } catch (CoreException e) { |
| } |
| return false; |
| } |
| |
| public static boolean areProcessable(Shell shell, IJavaElement[] elements) { |
| for (int i= 0; i < elements.length; i++) { |
| if (! isOnBuildPath(elements[i])) { |
| MessageDialog.openInformation(shell, |
| ActionMessages.ActionUtil_notOnBuildPath_title, |
| Messages.format(ActionMessages.ActionUtil_notOnBuildPath_resource_message, new Object[] {BasicElementLabels.getPathLabel(elements[i].getPath(), false)})); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * Check whether <code>editor</code> and <code>element</code> are |
| * processable and editable. If the editor edits the element, the validation |
| * is only performed once. If necessary, ask the user whether the file(s) |
| * should be edited. |
| * |
| * @param editor an editor, or <code>null</code> iff the action was not |
| * executed from an editor |
| * @param shell a shell to serve as parent for a dialog |
| * @param element the element to check, cannot be <code>null</code> |
| * @return <code>true</code> if the element can be edited, |
| * <code>false</code> otherwise |
| */ |
| public static boolean isEditable(JavaEditor editor, Shell shell, IJavaElement element) { |
| if (editor != null) { |
| IJavaElement input= SelectionConverter.getInput(editor); |
| if (input != null && input.equals(element.getAncestor(IJavaElement.COMPILATION_UNIT))) |
| return isEditable(editor); |
| else |
| return isEditable(editor) && isEditable(shell, element); |
| } |
| return isEditable(shell, element); |
| } |
| |
| public static boolean isEditable(JavaEditor editor) { |
| if (! isProcessable(editor)) |
| return false; |
| |
| return editor.validateEditorInputState(); |
| } |
| |
| public static boolean isEditable(Shell shell, IJavaElement element) { |
| if (! isProcessable(shell, element)) |
| return false; |
| |
| IJavaElement cu= element.getAncestor(IJavaElement.COMPILATION_UNIT); |
| if (cu != null) { |
| IResource resource= cu.getResource(); |
| if (resource != null && resource.isDerived(IResource.CHECK_ANCESTORS)) { |
| |
| // see org.eclipse.ui.texteditor.AbstractDecoratedTextEditor#validateEditorInputState() |
| final String warnKey= AbstractDecoratedTextEditorPreferenceConstants.EDITOR_WARN_IF_INPUT_DERIVED; |
| IPreferenceStore store= EditorsUI.getPreferenceStore(); |
| if (!store.getBoolean(warnKey)) |
| return true; |
| |
| MessageDialogWithToggle toggleDialog= MessageDialogWithToggle.openYesNoQuestion( |
| shell, |
| ActionMessages.ActionUtil_warning_derived_title, |
| Messages.format(ActionMessages.ActionUtil_warning_derived_message, BasicElementLabels.getPathLabel(resource.getFullPath(), false)), |
| ActionMessages.ActionUtil_warning_derived_dontShowAgain, |
| false, |
| null, |
| null); |
| |
| EditorsUI.getPreferenceStore().setValue(warnKey, !toggleDialog.getToggleState()); |
| |
| return toggleDialog.getReturnCode() == IDialogConstants.YES_ID; |
| } |
| } |
| return true; |
| } |
| |
| } |
| |