Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2011 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 *******************************************************************************/ package ext.org.eclipse.jdt.internal.ui.wizards.buildpaths.newsourcepage; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import org.eclipse.swt.widgets.Shell; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IStatus; import org.eclipse.jface.action.Action; import org.eclipse.jface.action.IAction; import org.eclipse.jface.dialogs.ErrorDialog; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.ui.IWorkbenchPage; import org.eclipse.ui.IWorkbenchPart; import org.eclipse.ui.IWorkbenchPartReference; import org.eclipse.ui.IWorkbenchSite; import org.eclipse.ui.forms.widgets.FormText; import org.eclipse.ui.part.ISetSelectionTarget; import patch.org.eclipse.jdt.internal.ui.JavaPlugin; import ext.org.eclipse.jdt.internal.corext.buildpath.BuildpathDelta; import ext.org.eclipse.jdt.internal.corext.buildpath.IBuildpathModifierListener; public abstract class BuildpathModifierAction extends Action implements ISelectionChangedListener { public static final int ADD_SEL_SF_TO_BP = 0; public static final int REMOVE_FROM_BP = 1; public static final int EXCLUDE = 2; public static final int UNEXCLUDE = 3; public static final int EDIT_FILTERS = 4; public static final int CREATE_LINK = 5; public static final int RESET_ALL = 6; public static final int EDIT_OUTPUT = 7; public static final int CREATE_OUTPUT = 8; public static final int RESET = 9; public static final int INCLUDE = 10; public static final int UNINCLUDE = 11; public static final int CREATE_FOLDER = 12; public static final int ADD_JAR_TO_BP = 13; public static final int ADD_LIB_TO_BP = 14; public static final int ADD_SEL_LIB_TO_BP = 15; public static final int CONFIGURE_BUILD_PATH = 16; public static final int RESET_ALL_OUTPUT_FOLDERS = 17; public static final int DROP_DOWN_ACTION = 18; private final IWorkbenchSite fSite; private final List<Object> fSelectedElements; private final ISetSelectionTarget fSelectionTarget; private final List<IBuildpathModifierListener> fListeners; public BuildpathModifierAction(IWorkbenchSite site, ISetSelectionTarget selectionTarget, int id) { this(site, selectionTarget, id, IAction.AS_PUSH_BUTTON); } public BuildpathModifierAction(IWorkbenchSite site, ISetSelectionTarget selectionTarget, int id, int style) { super("", style); //$NON-NLS-1$ fSite = site; fSelectionTarget = selectionTarget; fSelectedElements = new ArrayList<Object>(); fListeners = new ArrayList<IBuildpathModifierListener>(); setId(Integer.toString(id)); } /** * A detailed description usable for a {@link FormText} * depending on the current selection, or <code>null</code> * if <code>!enabled()</code> * * @return A detailed description or null if <code>!enabled()</code> */ public abstract String getDetailedDescription(); /** * {@inheritDoc} */ public void selectionChanged(final SelectionChangedEvent event) { final ISelection selection = event.getSelection(); if (selection instanceof IStructuredSelection) { setEnabled(canHandle((IStructuredSelection) selection)); fSelectedElements.clear(); fSelectedElements.addAll(((IStructuredSelection) selection).toList()); } else { setEnabled(canHandle(StructuredSelection.EMPTY)); fSelectedElements.clear(); } } protected abstract boolean canHandle(IStructuredSelection elements); protected List<?> getSelectedElements() { return fSelectedElements; } public void addBuildpathModifierListener(IBuildpathModifierListener listener) { fListeners.add(listener); } public void removeBuildpathModifierListener(IBuildpathModifierListener listener) { fListeners.remove(listener); } protected void informListeners(BuildpathDelta delta) { for (Iterator<IBuildpathModifierListener> iterator = fListeners.iterator(); iterator.hasNext();) { iterator.next().buildpathChanged(delta); } } protected Shell getShell() { if (fSite == null) return JavaPlugin.getActiveWorkbenchShell(); return fSite.getShell() != null ? fSite.getShell() : JavaPlugin.getActiveWorkbenchShell(); } protected void showExceptionDialog(CoreException exception, String title) { showError(exception, getShell(), title, exception.getMessage()); } protected void showError(CoreException e, Shell shell, String title, String message) { IStatus status = e.getStatus(); if (status != null) { ErrorDialog.openError(shell, message, title, status); } else { MessageDialog.openError(shell, title, message); } } protected void selectAndReveal(final ISelection selection) { if (fSelectionTarget != null) fSelectionTarget.selectReveal(selection); if (fSite == null) return; // validate the input IWorkbenchPage page = fSite.getPage(); if (page == null) return; // get all the view and editor parts List<IWorkbenchPart> parts = new ArrayList<IWorkbenchPart>(); IWorkbenchPartReference refs[] = page.getViewReferences(); for (int i = 0; i < refs.length; i++) { IWorkbenchPart part = refs[i].getPart(false); if (part != null) parts.add(part); } refs = page.getEditorReferences(); for (int i = 0; i < refs.length; i++) { if (refs[i].getPart(false) != null) parts.add(refs[i].getPart(false)); } Iterator<IWorkbenchPart> itr = parts.iterator(); while (itr.hasNext()) { IWorkbenchPart part = itr.next(); // get the part's ISetSelectionTarget implementation ISetSelectionTarget target = null; if (part instanceof ISetSelectionTarget) target = (ISetSelectionTarget) part; else target = (ISetSelectionTarget) part.getAdapter(ISetSelectionTarget.class); if (target != null) { // select and reveal resource final ISetSelectionTarget finalTarget = target; page.getWorkbenchWindow().getShell().getDisplay().asyncExec(new Runnable() { public void run() { finalTarget.selectReveal(selection); } }); } } } }