/*******************************************************************************
* 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
* Sergey Prigogin (Google)
*******************************************************************************/
package org.eclipse.cdt.internal.ui.actions;
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.swt.widgets.Shell;
import org.eclipse.ui.editors.text.EditorsUI;
import org.eclipse.ui.texteditor.AbstractDecoratedTextEditorPreferenceConstants;
import org.eclipse.cdt.core.model.ICElement;
import org.eclipse.cdt.internal.corext.util.Messages;
import org.eclipse.cdt.internal.ui.editor.CEditor;
import org.eclipse.cdt.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 mustDisableCModelAction(Shell shell, Object element) {
return false;
// 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")); //$NON-NLS-1$ //$NON-NLS-2$
// return true;
}
public static boolean isProcessable(CEditor editor) {
if (editor == null)
return true;
Shell shell = editor.getSite().getShell();
ICElement input= SelectionConverter.getInput(editor);
// if a C/C++ editor doesn't have an input of type C 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, Object element) {
if (!(element instanceof ICElement))
return true;
if (isOnBuildPath((ICElement) element))
return true;
MessageDialog.openInformation(shell,
ActionMessages.ActionUtil_notOnBuildPath_title,
ActionMessages.ActionUtil_notOnBuildPath_message);
return false;
}
public static boolean isOnBuildPath(ICElement element) {
//fix for bug http://dev.eclipse.org/bugs/show_bug.cgi?id=20051
if (element.getElementType() == ICElement.C_PROJECT)
return true;
// ICProject project= element.getCProject();
// if (!project.isOnSourceRoot(element.getResource()))
// 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(CEditor editor, Shell shell, ICElement element) {
if (editor != null) {
ICElement input= SelectionConverter.getInput(editor);
if (input != null && input.equals(element.getAncestor(ICElement.C_UNIT)))
return isEditable(editor);
else
return isEditable(editor) && isEditable(shell, element);
}
return isEditable(shell, element);
}
public static boolean isEditable(CEditor editor) {
if (!isProcessable(editor))
return false;
return editor.validateEditorInputState();
}
public static boolean isEditable(Shell shell, ICElement element) {
if (!isProcessable(shell, element))
return false;
ICElement cu= element.getAncestor(ICElement.C_UNIT);
if (cu != null) {
IResource resource= cu.getResource();
if (resource != null && resource.isDerived()) {
// 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;
}
}