| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.internal.dialogs; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| import org.eclipse.ui.IPluginContribution; |
| import org.eclipse.ui.SelectionEnabler; |
| import org.eclipse.ui.internal.LegacyResourceSupport; |
| import org.eclipse.ui.internal.WorkbenchPlugin; |
| import org.eclipse.ui.internal.registry.WizardsRegistryReader; |
| import org.eclipse.ui.model.IWorkbenchAdapter; |
| import org.eclipse.ui.model.IWorkbenchAdapter2; |
| import org.eclipse.ui.model.WorkbenchAdapter; |
| |
| /** |
| * Instances represent registered wizards. |
| */ |
| public class WorkbenchWizardElement |
| extends WorkbenchAdapter |
| implements IAdaptable, IPluginContribution { |
| private String id; |
| private String name; |
| private ImageDescriptor imageDescriptor; |
| private String description; |
| private SelectionEnabler selectionEnabler; |
| private IConfigurationElement configurationElement; |
| private ImageDescriptor descriptionImage; |
| private String helpHref; |
| /** |
| * Create a new instance of this class |
| * |
| * @param name |
| * java.lang.String |
| */ |
| public WorkbenchWizardElement(String name) { |
| this.name = name; |
| } |
| /** |
| * Answer a boolean indicating whether the receiver is able to handle the |
| * passed selection |
| * |
| * @return boolean |
| * @param selection |
| * IStructuredSelection |
| */ |
| public boolean canHandleSelection(IStructuredSelection selection) { |
| return getSelectionEnabler().isEnabledForSelection(selection); |
| } |
| |
| /** |
| * Answer the selection for the reciever based on whether the it can handle |
| * the selection. If it can return the selection. If it can handle the |
| * adapted to IResource value of the selection. If it satisfies neither of |
| * these conditions return an empty IStructuredSelection. |
| * |
| * @return IStructuredSelection |
| * @param selection |
| * IStructuredSelection |
| */ |
| public IStructuredSelection adaptedSelection(IStructuredSelection selection) { |
| if (canHandleSelection(selection)) |
| return selection; |
| |
| IStructuredSelection adaptedSelection = convertToResources(selection); |
| if (canHandleSelection(adaptedSelection)) |
| return adaptedSelection; |
| |
| //Couldn't find one that works so just return |
| return StructuredSelection.EMPTY; |
| } |
| |
| /** |
| * Create an the instance of the object described by the configuration |
| * element. That is, create the instance of the class the isv supplied in |
| * the extension point. |
| */ |
| public Object createExecutableExtension() throws CoreException { |
| return WorkbenchPlugin.createExtension( |
| configurationElement, |
| WizardsRegistryReader.ATT_CLASS); |
| } |
| /** |
| * Returns an object which is an instance of the given class associated |
| * with this object. Returns <code>null</code> if no such object can be |
| * found. |
| */ |
| public Object getAdapter(Class adapter) { |
| if (adapter == IWorkbenchAdapter.class || adapter == IWorkbenchAdapter2.class) { |
| return this; |
| } |
| return Platform.getAdapterManager().getAdapter(this, adapter); |
| } |
| /** |
| * @return IConfigurationElement |
| */ |
| public IConfigurationElement getConfigurationElement() { |
| return configurationElement; |
| } |
| /** |
| * Answer the description parameter of this element |
| * |
| * @return java.lang.String |
| */ |
| public String getDescription() { |
| return description; |
| } |
| /** |
| * Answer the id as specified in the extension. |
| * |
| * @return java.lang.String |
| */ |
| public String getID() { |
| return id; |
| } |
| /** |
| * Answer the icon of this element. |
| */ |
| public ImageDescriptor getImageDescriptor() { |
| return imageDescriptor; |
| } |
| /** |
| * Returns the name of this wizard element. |
| */ |
| public ImageDescriptor getImageDescriptor(Object element) { |
| return imageDescriptor; |
| } |
| /** |
| * Returns the name of this wizard element. |
| */ |
| public String getLabel(Object element) { |
| return name; |
| } |
| /** |
| * Answer self's action enabler, creating it first iff necessary |
| */ |
| protected SelectionEnabler getSelectionEnabler() { |
| if (selectionEnabler == null) |
| selectionEnabler = new SelectionEnabler(configurationElement); |
| |
| return selectionEnabler; |
| } |
| /** |
| * @param newConfigurationElement |
| * IConfigurationElement |
| */ |
| public void setConfigurationElement(IConfigurationElement newConfigurationElement) { |
| configurationElement = newConfigurationElement; |
| } |
| /** |
| * Set the description parameter of this element |
| * |
| * @param value |
| * java.lang.String |
| */ |
| public void setDescription(String value) { |
| description = value; |
| } |
| /** |
| * Set the id parameter of this element |
| * |
| * @param value |
| * java.lang.String |
| */ |
| public void setID(String value) { |
| id = value; |
| } |
| /** |
| * Set the icon of this element. |
| */ |
| public void setImageDescriptor(ImageDescriptor value) { |
| imageDescriptor = value; |
| } |
| |
| /** |
| * Attempt to convert the elements in the passed selection into resources |
| * by asking each for its IResource property (iff it isn't already a |
| * resource). If all elements in the initial selection can be converted to |
| * resources then answer a new selection containing these resources; |
| * otherwise answer an empty selection. |
| * |
| * @param originalSelection the original selection |
| * @return the converted selection or an empty selection |
| */ |
| private IStructuredSelection convertToResources(IStructuredSelection originalSelection) { |
| // @issue resource-specific code should be pushed into IDE |
| Class resourceClass = LegacyResourceSupport.getResourceClass(); |
| if (resourceClass == null) { |
| return originalSelection; |
| } |
| |
| List result = new ArrayList(); |
| Iterator elements = originalSelection.iterator(); |
| |
| while (elements.hasNext()) { |
| Object currentElement = elements.next(); |
| if (resourceClass.isInstance(currentElement)) { // already a resource |
| result.add(currentElement); |
| } else if ( |
| !(currentElement instanceof IAdaptable)) { // cannot be converted to resource |
| return StructuredSelection.EMPTY; // so fail |
| } else { |
| Object adapter = ((IAdaptable) currentElement).getAdapter(resourceClass); |
| if (!(resourceClass.isInstance(adapter))) // chose not to be converted to resource |
| return StructuredSelection.EMPTY; // so fail |
| result.add(adapter); // add the converted resource |
| } |
| } |
| |
| // all converted fine, answer new selection |
| return new StructuredSelection(result.toArray()); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.ui.IPluginContribution#getLocalId() |
| */ |
| public String getLocalId() { |
| return getID(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.ui.IPluginContribution#getPluginId() |
| */ |
| public String getPluginId() { |
| return (configurationElement != null) |
| ? configurationElement.getDeclaringExtension().getNamespace() |
| : null; |
| } |
| |
| /** |
| * Return the description image for this wizard. |
| * |
| * @return the description image for this wizard |
| * @since 3.0 |
| */ |
| public ImageDescriptor getDescriptionImage() { |
| return descriptionImage; |
| } |
| |
| /** |
| * Set the descriptive image for this wizard. |
| * |
| * @param descriptor the descriptive image |
| * @since 3.0 |
| */ |
| public void setDescriptionImage(ImageDescriptor descriptor) { |
| descriptionImage = descriptor; |
| } |
| |
| /** |
| * Return the help system href for this wizard. |
| * |
| * @return the help system href for this wizard |
| * @since 3.0 |
| */ |
| public String getHelpHref() { |
| return helpHref; |
| } |
| |
| /** |
| * Set the help system href for this wizard. |
| * |
| * @param href the help system href for this wizard |
| * @since 3.0 |
| */ |
| public void setHelpHref(String href) { |
| helpHref = href; |
| } |
| } |