| /******************************************************************************* |
| * Copyright (c) 2000, 2016 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 org.eclipse.help.ui.internal.views; |
| |
| import java.util.Observable; |
| import java.util.Observer; |
| |
| import org.eclipse.help.IHelpResource; |
| import org.eclipse.help.internal.base.BaseHelpSystem; |
| import org.eclipse.help.internal.base.BookmarkManager; |
| import org.eclipse.help.ui.internal.HelpUIResources; |
| import org.eclipse.help.ui.internal.IHelpUIConstants; |
| import org.eclipse.help.ui.internal.Messages; |
| import org.eclipse.jface.action.Action; |
| 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.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.LabelProvider; |
| import org.eclipse.jface.viewers.TreeViewer; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.swt.custom.BusyIndicator; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.ui.IMemento; |
| import org.eclipse.ui.actions.ActionFactory; |
| import org.eclipse.ui.forms.widgets.FormToolkit; |
| |
| public class BookmarksPart extends HyperlinkTreePart implements Observer { |
| private Action deleteAction; |
| |
| class BookmarksProvider implements ITreeContentProvider { |
| |
| @Override |
| public Object[] getChildren(Object parentElement) { |
| if (parentElement == BookmarksPart.this) |
| return new Object[] { BaseHelpSystem.getBookmarkManager() }; |
| if (parentElement instanceof BookmarkManager) |
| return ((BookmarkManager) parentElement).getBookmarks(); |
| return new Object[0]; |
| } |
| |
| @Override |
| public Object getParent(Object element) { |
| return null; |
| } |
| |
| @Override |
| public boolean hasChildren(Object element) { |
| return getChildren(element).length > 0; |
| } |
| |
| @Override |
| public Object[] getElements(Object inputElement) { |
| return getChildren(inputElement); |
| } |
| |
| @Override |
| public void dispose() { |
| } |
| |
| @Override |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
| } |
| } |
| |
| class BookmarksLabelProvider extends LabelProvider { |
| |
| @Override |
| public String getText(Object obj) { |
| if (obj instanceof BookmarkManager) |
| return Messages.BookmarksPart_savedTopics; |
| if (obj instanceof IHelpResource) |
| return ((IHelpResource) obj).getLabel(); |
| return super.getText(obj); |
| } |
| |
| @Override |
| public Image getImage(Object obj) { |
| if (obj instanceof BookmarkManager) |
| return HelpUIResources |
| .getImage(IHelpUIConstants.IMAGE_BOOKMARKS); |
| if (obj instanceof IHelpResource) |
| return HelpUIResources |
| .getImage(IHelpUIConstants.IMAGE_BOOKMARK); |
| return super.getImage(obj); |
| } |
| } |
| |
| /** |
| * @param parent |
| * @param toolkit |
| * @param style |
| */ |
| public BookmarksPart(Composite parent, final FormToolkit toolkit, |
| IToolBarManager tbm) { |
| super(parent, toolkit, tbm); |
| BaseHelpSystem.getBookmarkManager().addObserver(this); |
| } |
| |
| @Override |
| public void dispose() { |
| BaseHelpSystem.getBookmarkManager().deleteObserver(this); |
| super.dispose(); |
| } |
| |
| @Override |
| protected void configureTreeViewer() { |
| treeViewer.setContentProvider(new BookmarksProvider()); |
| treeViewer.setLabelProvider(new BookmarksLabelProvider()); |
| treeViewer.setAutoExpandLevel(TreeViewer.ALL_LEVELS); |
| deleteAction = new Action("") { //$NON-NLS-1$ |
| |
| @Override |
| public void run() { |
| Object obj = ((IStructuredSelection)treeViewer.getSelection()).getFirstElement(); |
| if (obj instanceof BookmarkManager.Bookmark) { |
| BookmarkManager.Bookmark b = (BookmarkManager.Bookmark)obj; |
| BaseHelpSystem.getBookmarkManager().removeBookmark(b); |
| } |
| } |
| }; |
| deleteAction.setText(Messages.BookmarksPart_delete); |
| deleteAction.setEnabled(false); |
| } |
| |
| @Override |
| protected void handleSelectionChanged(IStructuredSelection sel) { |
| Object obj = sel.getFirstElement(); |
| deleteAction.setEnabled(obj!=null && obj instanceof BookmarkManager.Bookmark); |
| super.handleSelectionChanged(sel); |
| } |
| |
| @Override |
| public boolean fillContextMenu(IMenuManager manager) { |
| boolean value = super.fillContextMenu(manager); |
| ISelection selection = treeViewer.getSelection(); |
| boolean canDeleteAll=false; |
| int count = BaseHelpSystem.getBookmarkManager().getBookmarks().length; |
| canDeleteAll = count>0; |
| |
| if (canDelete((IStructuredSelection) selection)) { |
| if (value) |
| manager.add(new Separator()); |
| manager.add(deleteAction); |
| value=true; |
| } |
| if (canDeleteAll) { |
| Action action = new Action("") { //$NON-NLS-1$ |
| |
| @Override |
| public void run() { |
| BusyIndicator.showWhile(getControl().getDisplay(), |
| () -> BaseHelpSystem.getBookmarkManager().removeAllBookmarks()); |
| } |
| }; |
| action.setText(Messages.BookmarksPart_deleteAll); |
| manager.add(action); |
| value=true; |
| } |
| if (value==true) |
| manager.add(new Separator()); |
| return value; |
| } |
| |
| private boolean canDelete(IStructuredSelection ssel) { |
| Object obj = ssel.getFirstElement(); |
| return obj instanceof BookmarkManager.Bookmark; |
| } |
| |
| @Override |
| protected void doOpen(Object obj) { |
| if (obj instanceof BookmarkManager) { |
| treeViewer.setExpandedState(obj, !treeViewer.getExpandedState(obj)); |
| } else if (obj instanceof IHelpResource) { |
| IHelpResource res = (IHelpResource) obj; |
| if (res.getHref() != null) |
| parent.showURL(res.getHref()); |
| } |
| } |
| |
| @Override |
| public void update(final Observable o, final Object arg) { |
| treeViewer.getControl().getDisplay().asyncExec(() -> asyncUpdate(o, arg)); |
| } |
| |
| private void asyncUpdate(Observable o, Object arg) { |
| BookmarkManager.BookmarkEvent event = (BookmarkManager.BookmarkEvent) arg; |
| switch (event.getType()) { |
| case BookmarkManager.ADD: |
| treeViewer.add(BaseHelpSystem.getBookmarkManager(), event |
| .getBookmark()); |
| break; |
| case BookmarkManager.REMOVE: |
| treeViewer.remove(event.getBookmark()); |
| break; |
| case BookmarkManager.REMOVE_ALL: |
| case BookmarkManager.WORLD_CHANGED: |
| treeViewer.refresh(); |
| break; |
| } |
| } |
| |
| @Override |
| public IAction getGlobalAction(String id) { |
| if (id.equals(ActionFactory.DELETE.getId())) |
| return deleteAction; |
| return super.getGlobalAction(id); |
| } |
| |
| @Override |
| protected boolean canAddBookmarks() { |
| return false; |
| } |
| |
| @Override |
| public void toggleRoleFilter() { |
| } |
| |
| @Override |
| public void refilter() { |
| } |
| |
| @Override |
| public void saveState(IMemento memento) { |
| } |
| } |