| /******************************************************************************* |
| * 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.resources.ui; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.eclipse.core.expressions.Expression; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.jface.action.ActionContributionItem; |
| import org.eclipse.jface.action.IContributionItem; |
| import org.eclipse.jface.text.ITextSelection; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| import org.eclipse.jface.viewers.StructuredViewer; |
| import org.eclipse.jface.viewers.ViewerFilter; |
| import org.eclipse.mylyn.commons.core.StatusHandler; |
| import org.eclipse.mylyn.context.ui.AbstractAutoFocusViewAction; |
| import org.eclipse.mylyn.context.ui.InterestFilter; |
| import org.eclipse.mylyn.internal.context.ui.ContextUiPlugin; |
| import org.eclipse.mylyn.internal.resources.ui.ResourcesUiBridgePlugin; |
| import org.eclipse.ui.IEditorInput; |
| import org.eclipse.ui.IEditorPart; |
| import org.eclipse.ui.IViewPart; |
| import org.eclipse.ui.internal.navigator.NavigatorContentService; |
| import org.eclipse.ui.internal.navigator.actions.LinkEditorAction; |
| import org.eclipse.ui.internal.navigator.filters.CommonFilterDescriptor; |
| import org.eclipse.ui.internal.navigator.filters.CommonFilterDescriptorManager; |
| import org.eclipse.ui.internal.navigator.filters.CoreExpressionFilter; |
| import org.eclipse.ui.internal.navigator.filters.SelectFiltersAction; |
| import org.eclipse.ui.navigator.CommonNavigator; |
| import org.eclipse.ui.navigator.ILinkHelper; |
| |
| /** |
| * @author Mik Kersten |
| * @since 3.0 |
| */ |
| public abstract class FocusCommonNavigatorAction extends AbstractAutoFocusViewAction { |
| |
| private Object linkService; |
| |
| private Method linkServiceMethod; |
| |
| private boolean resolveFailed; |
| |
| private CommonNavigator commonNavigator; |
| |
| private CommonFilterDescriptor[] filterDescriptors; |
| |
| private Field filterExpressionField1; |
| |
| private Field filterExpressionField2; |
| |
| public FocusCommonNavigatorAction(InterestFilter interestFilter, boolean manageViewer, boolean manageFilters, |
| boolean manageLinking) { |
| super(interestFilter, manageViewer, manageFilters, manageLinking); |
| } |
| |
| @Override |
| protected boolean installInterestFilter(StructuredViewer viewer) { |
| if (commonNavigator == null) { |
| commonNavigator = (CommonNavigator) super.getPartForAction(); |
| } |
| |
| try { |
| // XXX: reflection |
| Class<?> clazz2 = CoreExpressionFilter.class; |
| filterExpressionField1 = clazz2.getDeclaredField("filterExpression"); //$NON-NLS-1$ |
| filterExpressionField1.setAccessible(true); |
| |
| Class<?> clazz1 = CommonFilterDescriptor.class; |
| filterExpressionField2 = clazz1.getDeclaredField("filterExpression"); //$NON-NLS-1$ |
| filterExpressionField2.setAccessible(true); |
| } catch (Exception e) { |
| StatusHandler.log(new Status(IStatus.ERROR, ResourcesUiBridgePlugin.ID_PLUGIN, |
| "Could not determine filter", e)); //$NON-NLS-1$ |
| } |
| |
| filterDescriptors = CommonFilterDescriptorManager.getInstance().findVisibleFilters( |
| commonNavigator.getNavigatorContentService()); |
| |
| return super.installInterestFilter(viewer); |
| } |
| |
| @Override |
| protected ISelection resolveSelection(IEditorPart editor, ITextSelection changedSelection, StructuredViewer viewer) |
| throws CoreException { |
| if (resolveFailed) { |
| return null; |
| } |
| if (linkServiceMethod == null) { |
| // TODO e3.5 replace with call to CommonNavigator.getLinkHelperService() |
| try { |
| try { |
| // e3.5: get helper from common navigator |
| Method method = CommonNavigator.class.getDeclaredMethod("getLinkHelperService"); //$NON-NLS-1$ |
| method.setAccessible(true); |
| linkService = method.invoke(commonNavigator); |
| } catch (NoSuchMethodException e) { |
| // e3.3, e3.4: instantiate helper |
| Class<?> clazz = Class.forName("org.eclipse.ui.internal.navigator.extensions.LinkHelperService"); //$NON-NLS-1$ |
| Constructor<?> constructor = clazz.getConstructor(NavigatorContentService.class); |
| linkService = constructor.newInstance((NavigatorContentService) commonNavigator.getCommonViewer() |
| .getNavigatorContentService()); |
| } |
| linkServiceMethod = linkService.getClass().getDeclaredMethod("getLinkHelpersFor", IEditorInput.class); //$NON-NLS-1$ |
| } catch (Throwable e) { |
| resolveFailed = true; |
| StatusHandler.log(new Status(IStatus.ERROR, ResourcesUiBridgePlugin.ID_PLUGIN, |
| "Initialization of LinkHelperService failed", e)); //$NON-NLS-1$ |
| } |
| } |
| |
| IEditorInput input = editor.getEditorInput(); |
| // TODO e3.5 replace with call to linkService.getLinkHelpersFor(editor.getEditorInput()); |
| ILinkHelper[] helpers; |
| try { |
| helpers = (ILinkHelper[]) linkServiceMethod.invoke(linkService, editor.getEditorInput()); |
| } catch (Exception e) { |
| return null; |
| } |
| |
| IStructuredSelection selection = StructuredSelection.EMPTY; |
| IStructuredSelection newSelection = StructuredSelection.EMPTY; |
| |
| for (ILinkHelper helper : helpers) { |
| selection = helper.findSelection(input); |
| if (selection != null && !selection.isEmpty()) { |
| newSelection = mergeSelection(newSelection, selection); |
| } |
| } |
| if (!newSelection.isEmpty()) { |
| return newSelection; |
| } |
| return null; |
| } |
| |
| @Override |
| protected void select(StructuredViewer viewer, ISelection toSelect) { |
| if (commonNavigator == null) { |
| commonNavigator = (CommonNavigator) super.getPartForAction(); |
| } |
| if (commonNavigator != null) { |
| commonNavigator.selectReveal(toSelect); |
| } |
| } |
| |
| // TODO: should have better way of doing this |
| @Override |
| protected void setManualFilteringAndLinkingEnabled(boolean on) { |
| IViewPart part = super.getPartForAction(); |
| if (part instanceof CommonNavigator) { |
| for (IContributionItem item : ((CommonNavigator) part).getViewSite() |
| .getActionBars() |
| .getToolBarManager() |
| .getItems()) { |
| if (item instanceof ActionContributionItem) { |
| ActionContributionItem actionItem = (ActionContributionItem) item; |
| if (actionItem.getAction() instanceof LinkEditorAction) { |
| actionItem.getAction().setEnabled(on); |
| } |
| } |
| } |
| for (IContributionItem item : ((CommonNavigator) part).getViewSite() |
| .getActionBars() |
| .getMenuManager() |
| .getItems()) { |
| if (item instanceof ActionContributionItem) { |
| ActionContributionItem actionItem = (ActionContributionItem) item; |
| if (actionItem.getAction() instanceof SelectFiltersAction) { |
| actionItem.getAction().setEnabled(on); |
| } |
| } |
| } |
| } |
| } |
| |
| @Override |
| protected void setDefaultLinkingEnabled(boolean on) { |
| IViewPart part = super.getPartForAction(); |
| if (part instanceof CommonNavigator) { |
| ((CommonNavigator) part).setLinkingEnabled(on); |
| } |
| } |
| |
| @Override |
| protected boolean isDefaultLinkingEnabled() { |
| IViewPart part = super.getPartForAction(); |
| if (part instanceof CommonNavigator) { |
| return ((CommonNavigator) part).isLinkingEnabled(); |
| } |
| return false; |
| } |
| |
| @Override |
| protected boolean isPreservedFilter(ViewerFilter filter) { |
| if (filter instanceof CoreExpressionFilter) { |
| CoreExpressionFilter expressionFilter = (CoreExpressionFilter) filter; |
| |
| Set<String> preservedIds = ContextUiPlugin.getDefault().getPreservedFilterIds(viewPart.getSite().getId()); |
| if (!preservedIds.isEmpty()) { |
| try { |
| Expression expression2 = (Expression) filterExpressionField1.get(expressionFilter); |
| |
| for (CommonFilterDescriptor commonFilterDescriptor : filterDescriptors) { |
| if (preservedIds.contains(commonFilterDescriptor.getId())) { |
| Expression expression1 = (Expression) filterExpressionField2.get(commonFilterDescriptor); |
| if (expression1 != null && expression1.equals(expression2)) { |
| return true; |
| } |
| } |
| } |
| } catch (IllegalArgumentException e) { |
| StatusHandler.log(new Status(IStatus.ERROR, ResourcesUiBridgePlugin.ID_PLUGIN, |
| "Could not determine filter", e)); //$NON-NLS-1$ |
| } catch (IllegalAccessException e) { |
| StatusHandler.log(new Status(IStatus.ERROR, ResourcesUiBridgePlugin.ID_PLUGIN, |
| "Could not determine filter", e)); //$NON-NLS-1$ |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Copied from |
| * |
| * @{link LinkEditorAction} |
| */ |
| @SuppressWarnings("unchecked") |
| private IStructuredSelection mergeSelection(IStructuredSelection aBase, IStructuredSelection aSelectionToAppend) { |
| if (aBase == null || aBase.isEmpty()) { |
| return (aSelectionToAppend != null) ? aSelectionToAppend : StructuredSelection.EMPTY; |
| } else if (aSelectionToAppend == null || aSelectionToAppend.isEmpty()) { |
| return aBase; |
| } else { |
| List newItems = new ArrayList(aBase.toList()); |
| newItems.addAll(aSelectionToAppend.toList()); |
| return new StructuredSelection(newItems); |
| } |
| } |
| |
| } |