Java tutorial
/******************************************************************************* * Copyright (c) 2004, 2008 Tasktop Technologies 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: * Tasktop Technologies - initial API and implementation *******************************************************************************/ package org.eclipse.mylyn.internal.java.ui.actions; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import org.eclipse.core.runtime.CoreException; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IMember; import org.eclipse.jdt.internal.ui.actions.SelectionConverter; import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor; import org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart; import org.eclipse.jdt.internal.ui.packageview.ToggleLinkingAction; import org.eclipse.jdt.ui.StandardJavaElementContentProvider; import org.eclipse.jface.action.ActionContributionItem; import org.eclipse.jface.action.IContributionItem; import org.eclipse.jface.text.ITextSelection; import org.eclipse.jface.text.TextSelection; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.StructuredViewer; import org.eclipse.jface.viewers.ViewerFilter; import org.eclipse.mylyn.context.ui.AbstractAutoFocusViewAction; import org.eclipse.mylyn.context.ui.InterestFilter; import org.eclipse.mylyn.internal.java.ui.JavaDeclarationsFilter; import org.eclipse.ui.IEditorPart; import org.eclipse.ui.IViewPart; /** * @author Mik Kersten */ public class FocusPackageExplorerAction extends AbstractAutoFocusViewAction { public FocusPackageExplorerAction() { super(new InterestFilter(), true, true, true); } @Override protected ISelection resolveSelection(IEditorPart part, ITextSelection changedSelection, StructuredViewer viewer) throws CoreException { Object elementToSelect = null; if (changedSelection instanceof TextSelection && part instanceof JavaEditor) { TextSelection textSelection = (TextSelection) changedSelection; IJavaElement javaElement = SelectionConverter.resolveEnclosingElement((JavaEditor) part, textSelection); if (javaElement != null) { elementToSelect = javaElement; } } if (elementToSelect != null) { StructuredSelection currentSelection = (StructuredSelection) viewer.getSelection(); if (currentSelection.size() <= 1) { if (elementToSelect instanceof IMember) { if (viewer.getContentProvider() instanceof StandardJavaElementContentProvider) { if (!((StandardJavaElementContentProvider) viewer.getContentProvider()) .getProvideMembers()) { elementToSelect = ((IMember) elementToSelect).getCompilationUnit(); return new StructuredSelection(elementToSelect); } } for (ViewerFilter filter : Arrays.asList(viewer.getFilters())) { if (filter instanceof JavaDeclarationsFilter) { elementToSelect = ((IMember) elementToSelect).getCompilationUnit(); return new StructuredSelection(elementToSelect); } } } } return new StructuredSelection(elementToSelect); } else { return null; } } // TODO: should have better way of doing this @Override protected void setManualFilteringAndLinkingEnabled(boolean enabled) { IViewPart part = super.getPartForAction(); if (part instanceof PackageExplorerPart) { for (IContributionItem item : ((PackageExplorerPart) part).getViewSite().getActionBars() .getToolBarManager().getItems()) { if (item instanceof ActionContributionItem) { ActionContributionItem actionItem = (ActionContributionItem) item; if (actionItem.getAction() instanceof ToggleLinkingAction) { actionItem.getAction().setEnabled(enabled); } } } for (IContributionItem item : ((PackageExplorerPart) part).getViewSite().getActionBars() .getMenuManager().getItems()) { if (item instanceof ActionContributionItem) { ActionContributionItem actionItem = (ActionContributionItem) item; // TODO: file bug asking for extensibility if (actionItem.getAction().getClass().getSimpleName().equals("ShowFilterDialogAction")) { //$NON-NLS-1$ actionItem.getAction().setEnabled(enabled); } } // NOTE: turning off dynamically contributed filter items is not currently feasible // else if (item instanceof ContributionItem) { // ContributionItem contributionItem = (ContributionItem) item; // // if (contributionItem.getClass().getSimpleName().equals("FilterActionMenuContributionItem")) { // try { // Class<?> clazz = contributionItem.getClass(); // Field field = clazz.getDeclaredField("fActionGroup"); // field.setAccessible(true); // Object object = field.get(contributionItem); // if (object instanceof CustomFiltersActionGroup) { // CustomFiltersActionGroup group = (CustomFiltersActionGroup) object; // group.setFilters(new String[] { }); // } // } catch (Exception e) { // e.printStackTrace(); // } // } // } } } } @Override protected void setDefaultLinkingEnabled(boolean on) { IViewPart part = super.getPartForAction(); if (part instanceof PackageExplorerPart) { ((PackageExplorerPart) part).setLinkingEnabled(on); } } @Override protected boolean isDefaultLinkingEnabled() { IViewPart part = super.getPartForAction(); if (part instanceof PackageExplorerPart) { return ((PackageExplorerPart) part).isLinkingEnabled(); } return false; } @Override public List<StructuredViewer> getViewers() { List<StructuredViewer> viewers = new ArrayList<StructuredViewer>(); // TODO: get from super IViewPart part = super.getPartForAction(); if (part instanceof PackageExplorerPart) { viewers.add(((PackageExplorerPart) part).getTreeViewer()); } return viewers; } }