package org.xmind.ui.internal.wizards;
import java.util.Map;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchCommandConstants;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWizard;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.commands.IElementUpdater;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.ui.internal.IWorkbenchHelpContextIds;
import org.eclipse.ui.internal.WorkbenchMessages;
import org.eclipse.ui.internal.WorkbenchPlugin;
import org.eclipse.ui.menus.UIElement;
import org.eclipse.ui.wizards.IWizardDescriptor;
import org.eclipse.ui.wizards.IWizardRegistry;
/**
* Abstract handler for commands that launch the import, export and new wizards.
* <p>
* This class is only intended to be extended by the three inner classes
* (<code>Export</code>, <code>Import</code> and <code>New</code>) defined here.
* </p>
*
* @since 3.2
*/
public abstract class WizardHandler extends AbstractHandler
implements IElementUpdater {
/**
* Default handler for launching export wizards.
*/
public static final class Export extends WizardHandler {
private static final int SIZING_WIZARD_WIDTH = 470;
private static final int SIZING_WIZARD_HEIGHT = 550;
@Override
protected String getWizardIdParameterId() {
return IWorkbenchCommandConstants.FILE_EXPORT_PARM_WIZARDID;
}
@Override
protected IWizardRegistry getWizardRegistry() {
return PlatformUI.getWorkbench().getExportWizardRegistry();
}
@Override
protected void executeHandler(ExecutionEvent event) {
IWorkbenchWindow activeWorkbenchWindow = HandlerUtil
.getActiveWorkbenchWindow(event);
if (activeWorkbenchWindow == null) {
// action has been disposed
return;
}
ImportExportWizard wizard = new ImportExportWizard(
ImportExportWizard.EXPORT);
IStructuredSelection selectionToPass = getSelectionToUse(event);
wizard.init(activeWorkbenchWindow.getWorkbench(), selectionToPass);
IDialogSettings workbenchSettings = WorkbenchPlugin.getDefault()
.getDialogSettings();
IDialogSettings wizardSettings = workbenchSettings
.getSection("ImportExportAction"); //$NON-NLS-1$
if (wizardSettings == null) {
wizardSettings = workbenchSettings
.addNewSection("ImportExportAction"); //$NON-NLS-1$
}
wizard.setDialogSettings(wizardSettings);
wizard.setForcePreviousAndNextButtons(true);
Shell parent = activeWorkbenchWindow.getShell();
WizardDialog dialog = new WizardDialog(parent, wizard);
dialog.create();
dialog.getShell().setSize(
Math.max(SIZING_WIZARD_WIDTH,
dialog.getShell().getSize().x),
SIZING_WIZARD_HEIGHT);
activeWorkbenchWindow.getWorkbench().getHelpSystem().setHelp(
dialog.getShell(), IWorkbenchHelpContextIds.EXPORT_WIZARD);
dialog.open();
}
}
/**
* Default handler for launching import wizards.
*/
public static final class Import extends WizardHandler {
private static final int SIZING_WIZARD_WIDTH = 470;
private static final int SIZING_WIZARD_HEIGHT = 550;
@Override
protected String getWizardIdParameterId() {
return IWorkbenchCommandConstants.FILE_IMPORT_PARM_WIZARDID;
}
@Override
protected IWizardRegistry getWizardRegistry() {
return PlatformUI.getWorkbench().getImportWizardRegistry();
}
@Override
protected void executeHandler(ExecutionEvent event) {
IWorkbenchWindow activeWorkbenchWindow = HandlerUtil
.getActiveWorkbenchWindow(event);
if (activeWorkbenchWindow == null) {
// action has been disposed
return;
}
ImportExportWizard wizard = new ImportExportWizard(
ImportExportWizard.IMPORT);
IStructuredSelection selectionToPass = getSelectionToUse(event);
wizard.init(activeWorkbenchWindow.getWorkbench(), selectionToPass);
IDialogSettings workbenchSettings = WorkbenchPlugin.getDefault()
.getDialogSettings();
IDialogSettings wizardSettings = workbenchSettings
.getSection("ImportExportAction"); //$NON-NLS-1$
if (wizardSettings == null) {
wizardSettings = workbenchSettings
.addNewSection("ImportExportAction"); //$NON-NLS-1$
}
wizard.setDialogSettings(wizardSettings);
wizard.setForcePreviousAndNextButtons(true);
Shell parent = activeWorkbenchWindow.getShell();
WizardDialog dialog = new WizardDialog(parent, wizard);
dialog.create();
dialog.getShell().setSize(
Math.max(SIZING_WIZARD_WIDTH,
dialog.getShell().getSize().x),
SIZING_WIZARD_HEIGHT);
activeWorkbenchWindow.getWorkbench().getHelpSystem().setHelp(
dialog.getShell(), IWorkbenchHelpContextIds.IMPORT_WIZARD);
dialog.open();
}
}
/**
* This is the execution of the handler to open a wizard dialog.
*
* @param event
*/
protected abstract void executeHandler(ExecutionEvent event);
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
String wizardId = event.getParameter(getWizardIdParameterId());
IWorkbenchWindow activeWindow = HandlerUtil
.getActiveWorkbenchWindowChecked(event);
if (wizardId == null) {
executeHandler(event);
} else {
IWizardRegistry wizardRegistry = getWizardRegistry();
IWizardDescriptor wizardDescriptor = wizardRegistry
.findWizard(wizardId);
if (wizardDescriptor == null) {
throw new ExecutionException("unknown wizard: " + wizardId); //$NON-NLS-1$
}
try {
IWorkbenchWizard wizard = wizardDescriptor.createWizard();
wizard.init(PlatformUI.getWorkbench(),
getSelectionToUse(event));
if (wizardDescriptor.canFinishEarly()
&& !wizardDescriptor.hasPages()) {
wizard.performFinish();
return null;
}
Shell parent = activeWindow.getShell();
WizardDialog dialog = new WizardDialog(parent, wizard);
dialog.create();
dialog.open();
} catch (CoreException ex) {
throw new ExecutionException("error creating wizard", ex); //$NON-NLS-1$
}
}
return null;
}
/**
* Returns a structured selection based on the event to initialize the
* wizard with.
*
* @param event
* the event object containing information about the current
* state of the application
* @return the current structured selection of the application
*/
protected IStructuredSelection getSelectionToUse(ExecutionEvent event) {
ISelection selection = HandlerUtil.getCurrentSelection(event);
if (selection instanceof IStructuredSelection) {
return (IStructuredSelection) selection;
}
return StructuredSelection.EMPTY;
}
@Override
public void updateElement(UIElement element, Map parameters) {
String wizardId = (String) parameters.get(getWizardIdParameterId());
if (wizardId == null)
return;
IWizardDescriptor wizard = getWizardRegistry().findWizard(wizardId);
if (wizard != null) {
element.setText(NLS.bind(WorkbenchMessages.WizardHandler_menuLabel,
wizard.getLabel()));
element.setTooltip(wizard.getDescription());
element.setIcon(wizard.getImageDescriptor());
}
}
/**
* Returns the id of the parameter used to indicate which wizard this
* command should launch.
*
* @return The id of the parameter used to indicate which wizard this
* command should launch.
*/
protected abstract String getWizardIdParameterId();
/**
* Returns the wizard registry for the concrete <code>WizardHandler</code>
* implementation class.
*
* @return The wizard registry for the concrete <code>WizardHandler</code>
* implementation class.
*/
protected abstract IWizardRegistry getWizardRegistry();
}
