org.eclipse.jface.wizard.IWizard Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2000, 2023 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jface.wizard;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.dialogs.TrayDialog;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Composite;
/**
* Interface for a wizard. A wizard maintains a list of wizard pages,
* stacked on top of each other in card layout fashion.
*
* The class Wizard provides an abstract implementation
* of this interface. However, clients are also free to implement this
* interface if Wizard does not suit their needs.
*
* @see Wizard
*/
public interface IWizard {
/**
* Adds any last-minute pages to this wizard.
*
* This method is called just before the wizard becomes visible, to give the
* wizard the opportunity to add any lazily created pages.
*
*/
void addPages();
/**
* Returns whether this wizard could be finished without further user
* interaction.
*
* The result of this method is typically used by the wizard container to enable
* or disable the Finish button.
*
*
* @return true if the wizard could be finished,
* and false otherwise
*/
boolean canFinish();
/**
* Creates this wizard's controls in the given parent control.
*
* The wizard container calls this method to create the controls
* for the wizard's pages before the wizard is opened. This allows
* the wizard to size correctly; otherwise a resize may occur when
* moving to a new page.
*
*
* @param pageContainer the parent control
*/
void createPageControls(Composite pageContainer);
/**
* Disposes of this wizard and frees all SWT resources.
*/
void dispose();
/**
* Returns the container of this wizard.
*
* @return the wizard container, or null if this
* wizard has yet to be added to a container
*/
IWizardContainer getContainer();
/**
* Returns the default page image for this wizard.
*
* This image can be used for pages which do not
* supply their own image.
*
*
* @return the default page image
*/
Image getDefaultPageImage();
/**
* Returns the dialog settings for this wizard.
*
* The dialog store is used to record state between
* wizard invocations (for example, radio button selections,
* last directory, etc.).
*
*
* @return the dialog settings, or null if none
*/
IDialogSettings getDialogSettings();
/**
* Returns the successor of the given page.
*
* This method is typically called by a wizard page
*
*
* @param page the page
* @return the next page, or null if none
*/
IWizardPage getNextPage(IWizardPage page);
/**
* Returns the minimum size of this wizard. The minimum size is calculated using
* the minimum page sizes of all wizard pages. May return {@code null} if none
* of the wizard pages specify a minimum size.
*
* @see IWizardPage#getMinimumPageSize()
* @return the minimum size encoded as {@code new Point(width,height)}
* @since 3.30
*/
default Point getMinimumWizardSize() {
return null;
}
/**
* Returns the wizard page with the given name belonging to this wizard.
*
* @param pageName the name of the wizard page
* @return the wizard page with the given name, or null if none
*/
IWizardPage getPage(String pageName);
/**
* Returns the number of pages in this wizard.
*
* @return the number of wizard pages
*/
int getPageCount();
/**
* Returns all the pages in this wizard.
*
* @return a list of pages
*/
IWizardPage[] getPages();
/**
* Returns the predecessor of the given page.
*
* This method is typically called by a wizard page
*
*
* @param page the page
* @return the previous page, or null if none
*/
IWizardPage getPreviousPage(IWizardPage page);
/**
* Returns the first page to be shown in this wizard.
*
* @return the first wizard page
*/
IWizardPage getStartingPage();
/**
* Returns the title bar color for this wizard.
*
* @return the title bar color
*/
RGB getTitleBarColor();
/**
* Returns the window title string for this wizard.
*
* @return the window title string, or null for no title
*/
String getWindowTitle();
/**
* Returns whether help is available for this wizard.
*
* The result of this method is typically used by the container to show or hide a button labeled
* "Help".
*
*
* Note: This wizard's container might be a {@link TrayDialog} which provides
* its own help support that is independent of this property.
*
*
* Note 2: In the default {@link WizardDialog} implementation, the "Help"
* button only works when {@link org.eclipse.jface.dialogs.IDialogPage#performHelp()} is implemented.
*
*
* @return true if help is available, false otherwise
* @see TrayDialog#isHelpAvailable()
* @see TrayDialog#setHelpAvailable(boolean)
*/
boolean isHelpAvailable();
/**
* Returns whether this wizard needs Previous and Next buttons.
*
* The result of this method is typically used by the container.
*
*
* @return true if Previous and Next buttons are required,
* and false if none are needed
*/
boolean needsPreviousAndNextButtons();
/**
* Returns whether this wizard needs a progress monitor.
*
* The result of this method is typically used by the container.
*
*
* @return true if a progress monitor is required,
* and false if none is needed
*/
boolean needsProgressMonitor();
/**
* Performs any actions appropriate in response to the user
* having pressed the Cancel button, or refuse if canceling
* now is not permitted.
*
* @return true to indicate the cancel request
* was accepted, and false to indicate
* that the cancel request was refused
*/
boolean performCancel();
/**
* Performs any actions appropriate in response to the user
* having pressed the Finish button, or refuse if finishing
* now is not permitted.
*
* Normally this method is only called on the container's
* current wizard. However if the current wizard is a nested wizard
* this method will also be called on all wizards in its parent chain.
* Such parents may use this notification to save state etc. However,
* the value the parents return from this method is ignored.
*
* @return true to indicate the finish request
* was accepted, and false to indicate
* that the finish request was refused
*/
boolean performFinish();
/**
* Sets or clears the container of this wizard.
*
* @param wizardContainer the wizard container, or null
*/
void setContainer(IWizardContainer wizardContainer);
}