Java tutorial
/******************************************************************************* * Copyright (c) 2007 IBM Corporation. * 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: * Robert Fuhrer (rfuhrer@watson.ibm.com) - initial API and implementation *******************************************************************************/ package org.eclipse.imp.ui.explorer; import org.eclipse.core.resources.IContainer; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.imp.model.ModelFactory; import org.eclipse.imp.model.ModelFactory.ModelException; import org.eclipse.imp.runtime.RuntimePlugin; import org.eclipse.jdt.core.IClassFile; import org.eclipse.jdt.core.ICompilationUnit; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IOpenable; import org.eclipse.jdt.internal.ui.packageview.ToggleLinkingAction; import org.eclipse.jdt.internal.ui.wizards.buildpaths.newsourcepage.GenerateBuildPathActionGroup; //import org.eclipse.jdt.internal.ui.workingsets.WorkingSetActionGroup; import org.eclipse.jdt.internal.ui.workingsets.WorkingSetShowActionGroup; // SMS 26 Apr 2008 backport from 3.3 patches import org.eclipse.jdt.ui.IContextMenuConstants; import org.eclipse.jdt.ui.PreferenceConstants; import org.eclipse.jdt.ui.actions.BuildActionGroup; import org.eclipse.jdt.ui.actions.CCPActionGroup; import org.eclipse.jdt.ui.actions.CustomFiltersActionGroup; import org.eclipse.jdt.ui.actions.GenerateActionGroup; import org.eclipse.jdt.ui.actions.ImportActionGroup; import org.eclipse.jdt.ui.actions.JavaSearchActionGroup; import org.eclipse.jdt.ui.actions.RefactorActionGroup; import org.eclipse.jface.action.IAction; import org.eclipse.jface.action.IMenuManager; import org.eclipse.jface.action.IToolBarManager; import org.eclipse.jface.action.Separator; import org.eclipse.jface.util.IPropertyChangeListener; import org.eclipse.jface.util.OpenStrategy; import org.eclipse.jface.util.PropertyChangeEvent; import org.eclipse.jface.viewers.DoubleClickEvent; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.ITreeSelection; import org.eclipse.jface.viewers.OpenEvent; import org.eclipse.jface.viewers.TreePath; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.swt.SWT; import org.eclipse.swt.events.KeyEvent; import org.eclipse.ui.IActionBars; import org.eclipse.ui.IMemento; import org.eclipse.ui.IWorkbenchActionConstants; import org.eclipse.ui.IWorkbenchPartSite; import org.eclipse.ui.IWorkingSet; import org.eclipse.ui.IWorkingSetManager; import org.eclipse.ui.actions.ActionFactory; import org.eclipse.ui.actions.ActionGroup; import org.eclipse.ui.actions.OpenInNewWindowAction; import org.eclipse.ui.views.framelist.BackAction; import org.eclipse.ui.views.framelist.ForwardAction; import org.eclipse.ui.views.framelist.Frame; import org.eclipse.ui.views.framelist.FrameAction; import org.eclipse.ui.views.framelist.FrameList; import org.eclipse.ui.views.framelist.GoIntoAction; import org.eclipse.ui.views.framelist.TreeFrame; import org.eclipse.ui.views.framelist.UpAction; public class ProjectExplorerActionGroup extends CompositeActionGroup { private ProjectExplorerPart fPart; private FrameList fFrameList; private GoIntoAction fZoomInAction; private BackAction fBackAction; private ForwardAction fForwardAction; private UpAction fUpAction; // private GotoTypeAction fGotoTypeAction; // private GotoPackageAction fGotoPackageAction; // private GotoResourceAction fGotoResourceAction; private CollapseAllAction fCollapseAllAction; private ToggleLinkingAction fToggleLinkingAction; private RefactorActionGroup fRefactorActionGroup; private NavigateActionGroup fNavigateActionGroup; private ViewActionGroup fViewActionGroup; private CustomFiltersActionGroup fCustomFiltersActionGroup; // private IAction fGotoRequiredProjectAction; public ProjectExplorerActionGroup(ProjectExplorerPart part) { super(); fPart = part; TreeViewer viewer = part.getViewer(); IPropertyChangeListener workingSetListener = new IPropertyChangeListener() { public void propertyChange(PropertyChangeEvent event) { try { doWorkingSetChanged(event); } catch (ModelException e) { RuntimePlugin.getInstance().logException("Error when responding to working set change", e); } } }; IWorkbenchPartSite site = fPart.getSite(); setGroups(new ActionGroup[] { new NewWizardsActionGroup(site), fNavigateActionGroup = new NavigateActionGroup(fPart), new CCPActionGroup(fPart), new GenerateBuildPathActionGroup(fPart), new GenerateActionGroup(fPart), fRefactorActionGroup = new RefactorActionGroup(fPart), new ImportActionGroup(fPart), new BuildActionGroup(fPart), new JavaSearchActionGroup(fPart), new ProjectActionGroup(fPart), fViewActionGroup = new ViewActionGroup(fPart.getRootMode(), workingSetListener, site), fCustomFiltersActionGroup = new CustomFiltersActionGroup(fPart, viewer), new LayoutActionGroup(fPart), // the working set action group must be created after the project action group // SMS 26 Apr 2008 backport from 3.3 patches //new WorkingSetActionGroup(fPart) new WorkingSetShowActionGroup(site) }); fViewActionGroup.fillFilters(viewer); ExplorerFrameSource frameSource = new ExplorerFrameSource(fPart); fFrameList = new FrameList(frameSource); frameSource.connectTo(fFrameList); fZoomInAction = new GoIntoAction(fFrameList); fBackAction = new BackAction(fFrameList); fForwardAction = new ForwardAction(fFrameList); fUpAction = new UpAction(fFrameList); // fGotoTypeAction= new GotoTypeAction(fPart); // fGotoPackageAction= new GotoPackageAction(fPart); // fGotoResourceAction= new GotoResourceAction(fPart); fCollapseAllAction = new CollapseAllAction(fPart); // fToggleLinkingAction= new ToggleLinkingAction(fPart); // fGotoRequiredProjectAction= new GotoRequiredProjectAction(fPart); } public void dispose() { super.dispose(); } // ---- Persistent state ----------------------------------------------------------------------- /* package */void restoreFilterAndSorterState(IMemento memento) { fViewActionGroup.restoreState(memento); fCustomFiltersActionGroup.restoreState(memento); } /* package */void saveFilterAndSorterState(IMemento memento) { fViewActionGroup.saveState(memento); fCustomFiltersActionGroup.saveState(memento); } // ---- Action Bars ---------------------------------------------------------------------------- public void fillActionBars(IActionBars actionBars) { super.fillActionBars(actionBars); setGlobalActionHandlers(actionBars); fillToolBar(actionBars.getToolBarManager()); fillViewMenu(actionBars.getMenuManager()); } /* package */void updateActionBars(IActionBars actionBars) { actionBars.getToolBarManager().removeAll(); actionBars.getMenuManager().removeAll(); fillActionBars(actionBars); actionBars.updateActionBars(); fZoomInAction.setEnabled(true); } private void setGlobalActionHandlers(IActionBars actionBars) { // Navigate Go Into and Go To actions. actionBars.setGlobalActionHandler(IWorkbenchActionConstants.GO_INTO, fZoomInAction); actionBars.setGlobalActionHandler(ActionFactory.BACK.getId(), fBackAction); actionBars.setGlobalActionHandler(ActionFactory.FORWARD.getId(), fForwardAction); actionBars.setGlobalActionHandler(IWorkbenchActionConstants.UP, fUpAction); // actionBars.setGlobalActionHandler(IWorkbenchActionConstants.GO_TO_RESOURCE, fGotoResourceAction); // actionBars.setGlobalActionHandler(JdtActionConstants.GOTO_TYPE, fGotoTypeAction); // actionBars.setGlobalActionHandler(JdtActionConstants.GOTO_PACKAGE, fGotoPackageAction); fRefactorActionGroup.retargetFileMenuActions(actionBars); } /* package */void fillToolBar(IToolBarManager toolBar) { toolBar.add(fBackAction); toolBar.add(fForwardAction); toolBar.add(fUpAction); toolBar.add(new Separator()); toolBar.add(fCollapseAllAction); // toolBar.add(fToggleLinkingAction); } /* package */void fillViewMenu(IMenuManager menu) { // menu.add(fToggleLinkingAction); menu.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS)); menu.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS + "-end"));//$NON-NLS-1$ } // ---- Context menu ------------------------------------------------------------------------- public void fillContextMenu(IMenuManager menu) { IStructuredSelection selection = (IStructuredSelection) getContext().getSelection(); int size = selection.size(); Object element = selection.getFirstElement(); // if (element instanceof ClassPathContainer.RequiredProjectWrapper) // menu.appendToGroup(IContextMenuConstants.GROUP_SHOW, fGotoRequiredProjectAction); addGotoMenu(menu, element, size); addOpenNewWindowAction(menu, element); super.fillContextMenu(menu); } private void addGotoMenu(IMenuManager menu, Object element, int size) { boolean enabled = size == 1 && fPart.getViewer().isExpandable(element) && (isGoIntoTarget(element) || element instanceof IContainer); fZoomInAction.setEnabled(enabled); if (enabled) menu.appendToGroup(IContextMenuConstants.GROUP_GOTO, fZoomInAction); } private boolean isGoIntoTarget(Object element) { if (element == null) return false; if (element instanceof IJavaElement) { int type = ((IJavaElement) element).getElementType(); return type == IJavaElement.JAVA_PROJECT || type == IJavaElement.PACKAGE_FRAGMENT_ROOT || type == IJavaElement.PACKAGE_FRAGMENT; } if (element instanceof IWorkingSet) { return true; } return false; } private void addOpenNewWindowAction(IMenuManager menu, Object element) { if (element instanceof IJavaElement) { element = ((IJavaElement) element).getResource(); } // fix for 64890 Package explorer out of sync when open/closing projects [package explorer] 64890 if (element instanceof IProject && !((IProject) element).isOpen()) return; if (!(element instanceof IContainer)) return; menu.appendToGroup(IContextMenuConstants.GROUP_OPEN, new OpenInNewWindowAction(fPart.getSite().getWorkbenchWindow(), (IContainer) element)); } // ---- Key board and mouse handling ------------------------------------------------------------ /* package */void handleDoubleClick(DoubleClickEvent event) { TreeViewer viewer = fPart.getViewer(); IStructuredSelection selection = (IStructuredSelection) event.getSelection(); Object element = selection.getFirstElement(); if (viewer.isExpandable(element)) { if (doubleClickGoesInto()) { // don't zoom into compilation units and class files if (element instanceof ICompilationUnit || element instanceof IClassFile) return; if (element instanceof IOpenable || element instanceof IContainer || element instanceof IWorkingSet) { fZoomInAction.run(); } } else { IAction openAction = fNavigateActionGroup.getOpenAction(); if (openAction != null && openAction.isEnabled() && OpenStrategy.getOpenMethod() == OpenStrategy.DOUBLE_CLICK) return; if (selection instanceof ITreeSelection) { TreePath[] paths = ((ITreeSelection) selection).getPathsFor(element); for (int i = 0; i < paths.length; i++) { viewer.setExpandedState(paths[i], !viewer.getExpandedState(paths[i])); } } else { viewer.setExpandedState(element, !viewer.getExpandedState(element)); } } } } /* package */void handleOpen(OpenEvent event) { IAction openAction = fNavigateActionGroup.getOpenAction(); if (openAction != null && openAction.isEnabled()) { openAction.run(); return; } } /* package */void handleKeyEvent(KeyEvent event) { if (event.stateMask != 0) return; if (event.keyCode == SWT.BS) { if (fUpAction != null && fUpAction.isEnabled()) { fUpAction.run(); event.doit = false; } } } private void doWorkingSetChanged(PropertyChangeEvent event) throws ModelException { if (ViewActionGroup.MODE_CHANGED.equals(event.getProperty())) { fPart.rootModeChanged(((Integer) event.getNewValue()).intValue()); Object oldInput = null; Object newInput = null; if (fPart.showProjects()) { oldInput = fPart.getWorkingSetModel(); newInput = ModelFactory.open(ResourcesPlugin.getWorkspace().getRoot()); } else if (fPart.showWorkingSets()) { oldInput = ModelFactory.open(ResourcesPlugin.getWorkspace().getRoot()); newInput = fPart.getWorkingSetModel(); } if (oldInput != null && newInput != null) { Frame frame; for (int i = 0; (frame = fFrameList.getFrame(i)) != null; i++) { if (frame instanceof TreeFrame) { TreeFrame treeFrame = (TreeFrame) frame; if (oldInput.equals(treeFrame.getInput())) treeFrame.setInput(newInput); } } } } else { IWorkingSet workingSet = (IWorkingSet) event.getNewValue(); String workingSetLabel = null; if (workingSet != null) workingSetLabel = workingSet.getLabel(); // fPart.setWorkingSetLabel(workingSetLabel); fPart.updateTitle(); String property = event.getProperty(); if (IWorkingSetManager.CHANGE_WORKING_SET_CONTENT_CHANGE.equals(property)) { TreeViewer viewer = fPart.getViewer(); viewer.getControl().setRedraw(false); viewer.refresh(); viewer.getControl().setRedraw(true); } } } private boolean doubleClickGoesInto() { return PreferenceConstants.DOUBLE_CLICK_GOES_INTO .equals(PreferenceConstants.getPreferenceStore().getString(PreferenceConstants.DOUBLE_CLICK)); } public FrameAction getUpAction() { return fUpAction; } public FrameAction getBackAction() { return fBackAction; } public FrameAction getForwardAction() { return fForwardAction; } public ViewActionGroup getWorkingSetActionGroup() { return fViewActionGroup; } public CustomFiltersActionGroup getCustomFilterActionGroup() { return fCustomFiltersActionGroup; } public FrameList getFrameList() { return fFrameList; } }