| /******************************************************************************* |
| * Copyright (c) 2014, 2018 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.e4.demo.cssbridge.ui.views; |
| |
| import static org.eclipse.e4.demo.cssbridge.util.ViewUtils.getDisplay; |
| |
| import java.util.List; |
| |
| import org.eclipse.e4.demo.cssbridge.core.IMailService; |
| import org.eclipse.e4.demo.cssbridge.model.FolderType; |
| import org.eclipse.e4.demo.cssbridge.model.TreeItem; |
| import org.eclipse.jface.viewers.IColorProvider; |
| import org.eclipse.jface.viewers.IFontProvider; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.LabelProvider; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| import org.eclipse.jface.viewers.TreeViewer; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.Font; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Listener; |
| import org.eclipse.ui.ISharedImages; |
| import org.eclipse.ui.IViewSite; |
| import org.eclipse.ui.PartInitException; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.part.ViewPart; |
| |
| public class FoldersView extends ViewPart { |
| public static final String ID = "org.eclipse.e4.demo.cssbridge.ui.views.foldersView"; |
| |
| private TreeViewer viewer; |
| |
| private IMailService mailService; |
| |
| private Listener treeItemPaintListener = new ItemPaintListener<org.eclipse.swt.widgets.TreeItem>() { |
| @Override |
| protected String getText(org.eclipse.swt.widgets.TreeItem item, |
| int index) { |
| return item.getText(index); |
| } |
| |
| @Override |
| protected Rectangle getBounds(org.eclipse.swt.widgets.TreeItem item, |
| int index) { |
| return item.getBounds(index); |
| } |
| |
| @Override |
| protected Rectangle getParentBounds( |
| org.eclipse.swt.widgets.TreeItem item) { |
| return item.getParent().getBounds(); |
| } |
| |
| @Override |
| protected Image getImage(org.eclipse.swt.widgets.TreeItem item, |
| int index) { |
| return item.getImage(); |
| } |
| |
| @Override |
| protected int calculateTextLeftPadding( |
| org.eclipse.swt.widgets.TreeItem item, int index) { |
| return item.getImage().getBounds().width + 5; |
| } |
| }; |
| |
| private Listener shellReskinListener = event -> viewer.refresh(); |
| |
| @Override |
| public void init(IViewSite site) throws PartInitException { |
| super.init(site); |
| mailService = site.getService(IMailService.class); |
| } |
| |
| @Override |
| public void dispose() { |
| if (!viewer.getTree().isDisposed()) { |
| viewer.getTree().removeListener(SWT.PaintItem, |
| treeItemPaintListener); |
| } |
| getDisplay(getSite()).removeListener(SWT.Skin, shellReskinListener); |
| } |
| |
| @Override |
| public void createPartControl(Composite parent) { |
| viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL |
| | SWT.BORDER); |
| viewer.setContentProvider(new ViewContentProvider()); |
| viewer.setLabelProvider(new ViewLabelProvider()); |
| viewer.setInput(createMailboxStructure(mailService.getMailboxName())); |
| viewer.getTree().addListener(SWT.PaintItem, treeItemPaintListener); |
| |
| getSite().setSelectionProvider(viewer); |
| selectFolder(FolderType.Inbox); |
| |
| getDisplay(getSite()).addListener(SWT.Skin, shellReskinListener); |
| } |
| |
| private TreeItem createMailboxStructure(String mailboxName) { |
| TreeItem root = new TreeItem(null, null); |
| TreeItem item = new TreeItem(root, mailboxName); |
| for (FolderType folder : FolderType.values()) { |
| item.addChild(new TreeItem(item, folder)); |
| } |
| root.addChild(item); |
| return root; |
| } |
| |
| private void selectFolder(FolderType type) { |
| TreeItem root = (TreeItem) viewer.getInput(); |
| for (TreeItem child : root.getChildren().get(0).getChildren()) { |
| if (child.getValue() == type) { |
| viewer.setSelection(new StructuredSelection(child)); |
| break; |
| } |
| } |
| } |
| |
| @Override |
| public void setFocus() { |
| viewer.getControl().setFocus(); |
| } |
| |
| private static class ViewContentProvider implements |
| ITreeContentProvider { |
| @Override |
| public void inputChanged(Viewer v, Object oldInput, Object newInput) { |
| } |
| |
| @Override |
| public void dispose() { |
| } |
| |
| @Override |
| public Object[] getElements(Object parent) { |
| return getChildren(parent); |
| } |
| |
| @Override |
| public Object getParent(Object child) { |
| if (child instanceof TreeItem) { |
| return ((TreeItem) child).getParent(); |
| } |
| return null; |
| } |
| |
| @Override |
| public Object[] getChildren(Object parent) { |
| List<TreeItem> children = null; |
| if (parent instanceof TreeItem) { |
| children = ((TreeItem) parent).getChildren(); |
| } |
| return children != null ? children.toArray() : new Object[0]; |
| } |
| |
| @Override |
| public boolean hasChildren(Object elem) { |
| if (elem instanceof TreeItem) { |
| return ((TreeItem) elem).getChildren() != null; |
| } |
| return false; |
| } |
| } |
| |
| private static class ViewLabelProvider extends LabelProvider implements |
| IFontProvider, IColorProvider { |
| @Override |
| public String getText(Object obj) { |
| return obj.toString(); |
| } |
| |
| @Override |
| public Image getImage(Object elem) { |
| ISharedImages sharedImages = PlatformUI.getWorkbench().getSharedImages(); |
| return sharedImages |
| .getImage(isFolderType(elem) ? ISharedImages.IMG_OBJ_ELEMENT : ISharedImages.IMG_OBJ_FOLDER); |
| } |
| |
| @Override |
| public Font getFont(Object element) { |
| return isFolderType(element) ? Theme |
| .getFont(Theme.FoldersView.FOLDER_TYPE_FONT) : Theme |
| .getFont(Theme.FoldersView.MAILBOX_NAME_FONT); |
| } |
| |
| private boolean isFolderType(Object elem) { |
| return elem instanceof TreeItem |
| && ((TreeItem) elem).getValue() instanceof FolderType; |
| } |
| |
| @Override |
| public Color getForeground(Object element) { |
| return isFolderType(element) ? Theme |
| .getColor(Theme.FoldersView.FOLDER_TYPE_FOREGROUND) : Theme |
| .getColor(Theme.FoldersView.MAILBOX_NAME_FOREGROUND); |
| } |
| |
| @Override |
| public Color getBackground(Object element) { |
| return null; |
| } |
| } |
| } |