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/*******************************************************************************
* Copyright (c) 2001, 2005 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:
* Rational Software - initial implementation
*******************************************************************************/
package org.eclipse.cdt.internal.ui.wizards;
import java.util.Iterator;
import org.eclipse.cdt.internal.ui.util.ExceptionHandler;
import org.eclipse.cdt.internal.ui.util.PixelConverter;
import org.eclipse.cdt.ui.CUIPlugin;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IFileEditorInput;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowActionDelegate;
import org.eclipse.ui.IWorkbenchWizard;
import org.eclipse.ui.actions.NewProjectAction;
public abstract class AbstractOpenWizardAction extends Action implements IWorkbenchWindowActionDelegate {
private Class[] fActivatedOnTypes;
private boolean fAcceptEmptySelection;
/**
* Creates a AbstractOpenWizardAction.
* @param label The label of the action
* @param acceptEmptySelection Specifies if the action allows an empty selection
*/
public AbstractOpenWizardAction(String label, boolean acceptEmptySelection) {
this(label, null, acceptEmptySelection);
}
/**
* Creates a AbstractOpenWizardAction.
* @param label The label of the action
* @param activatedOnTypes The action is only enabled when all objects in the selection
* are of the given types. <code>null</code> will allow all types.
* @param acceptEmptySelection Specifies if the action allows an empty selection
*/
public AbstractOpenWizardAction(String label, Class[] activatedOnTypes, boolean acceptEmptySelection) {
super(label);
fActivatedOnTypes= activatedOnTypes;
fAcceptEmptySelection= acceptEmptySelection;
}
/**
* Creates a AbstractOpenWizardAction with no restrictions on types, and does allow
* an empty selection.
*/
protected AbstractOpenWizardAction() {
fActivatedOnTypes= null;
fAcceptEmptySelection= true;
}
protected IWorkbench getWorkbench() {
return CUIPlugin.getDefault().getWorkbench();
}
private boolean isOfAcceptedType(Object obj) {
if (fActivatedOnTypes != null) {
for (int i= 0; i < fActivatedOnTypes.length; i++) {
if (fActivatedOnTypes[i].isInstance(obj)) {
return true;
}
}
return false;
}
return true;
}
private boolean isEnabled(IStructuredSelection selection) {
Iterator iter= selection.iterator();
while (iter.hasNext()) {
Object obj= iter.next();
if (!isOfAcceptedType(obj) || !shouldAcceptElement(obj)) {
return false;
}
}
return true;
}
/**
* Can be overridden to add more checks.
* obj is guaranteed to be instance of one of the accepted types
*/
protected boolean shouldAcceptElement(Object obj) {
return true;
}
/**
* Creates the specific wizard.
* (to be implemented by a subclass)
*/
abstract protected Wizard createWizard() throws CoreException;
protected IStructuredSelection getCurrentSelection() {
IWorkbenchWindow window= CUIPlugin.getActiveWorkbenchWindow();
if (window != null) {
ISelection selection= window.getSelectionService().getSelection();
if (selection instanceof IStructuredSelection) {
return (IStructuredSelection) selection;
}
// Build the selection from the IFile of the editor
IWorkbenchPart part = window.getPartService().getActivePart();
if (part instanceof IEditorPart) {
IEditorInput input = ((IEditorPart) part).getEditorInput();
if (input instanceof IFileEditorInput) {
IFile file = ((IFileEditorInput) input).getFile();
if (file != null)
return new StructuredSelection(file);
}
}
}
return StructuredSelection.EMPTY;
}
/**
* The user has invoked this action.
*/
public void run() {
/* if (!fNoChecking && !canActionBeAdded()) {
return;
}
if (!checkWorkspaceNotEmpty()) {
return;
}
*/ Shell shell= CUIPlugin.getActiveWorkbenchShell();
try {
Wizard wizard= createWizard();
if (wizard instanceof IWorkbenchWizard) {
((IWorkbenchWizard)wizard).init(getWorkbench(), getCurrentSelection());
}
WizardDialog dialog= new WizardDialog(shell, wizard);
PixelConverter converter= new PixelConverter(CUIPlugin.getActiveWorkbenchShell());
dialog.setMinimumPageSize(converter.convertWidthInCharsToPixels(70), converter.convertHeightInCharsToPixels(20));
dialog.create();
dialog.open();
} catch (CoreException e) {
String title= NewWizardMessages.getString("AbstractOpenWizardAction.createerror.title"); //$NON-NLS-1$
String message= NewWizardMessages.getString("AbstractOpenWizardAction.createerror.message"); //$NON-NLS-1$
ExceptionHandler.handle(e, shell, title, message);
}
}
/**
* Tests if the action can be run on the current selection.
*/
public boolean canActionBeAdded() {
IStructuredSelection selection= getCurrentSelection();
if (selection == null || selection.isEmpty()) {
return fAcceptEmptySelection;
}
return isEnabled(selection);
}
/*
* @see IActionDelegate#run(IAction)
*/
public void run(IAction action) {
run();
}
/*
* @see IWorkbenchWindowActionDelegate#dispose()
*/
public void dispose() {
}
/*
* @see IWorkbenchWindowActionDelegate#init(IWorkbenchWindow)
*/
public void init(IWorkbenchWindow window) {
}
/*
* @see IActionDelegate#selectionChanged(IAction, ISelection)
*/
public void selectionChanged(IAction action, ISelection selection) {
// selection taken from selectionprovider
}
protected boolean checkWorkspaceNotEmpty() {
IWorkspace workspace= ResourcesPlugin.getWorkspace();
if (workspace.getRoot().getProjects().length == 0) {
Shell shell= CUIPlugin.getActiveWorkbenchShell();
String title= NewWizardMessages.getString("AbstractOpenWizardAction.noproject.title"); //$NON-NLS-1$
String message= NewWizardMessages.getString("AbstractOpenWizardAction.noproject.message"); //$NON-NLS-1$
if (MessageDialog.openQuestion(shell, title, message)) {
IWorkbenchWindow window= CUIPlugin.getActiveWorkbenchWindow();
(new NewProjectAction(window)).run();
return workspace.getRoot().getProjects().length != 0;
}
return false;
}
return true;
}
}
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