svn-rcp开发实例

package cn.iwoo.svn; import java.util.ArrayList; import org.eclipse.jface.viewers.IStructuredContentProvider; 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.SWT; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.widgets.Composite; import org.eclipse.ui.ISharedImages; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.part.ViewPart; public class NavigationView extends ViewPart { public static final String ID = "cn.iwoo.svn.navigationView"; private TreeViewer viewer; class TreeObject { private String name; private TreeParent parent; public TreeObject(String name) { this.name = name; } public String getName() { return name; } public void setParent(TreeParent parent) { this.parent = parent; } public TreeParent getParent() { return parent; } public String toString() { return getName(); } } class TreeParent extends TreeObject { private ArrayList children; public TreeParent(String name) { super(name); children = new ArrayList(); } public void addChild(TreeObject child) { children.add(child); child.setParent(this); } public void removeChild(TreeObject child) { children.remove(child); child.setParent(null); } public TreeObject[] getChildren() { return (TreeObject[]) children.toArray(new TreeObject[children.size()]); } public boolean hasChildren() { return children.size()>0; } } class ViewContentProvider implements IStructuredContentProvider, ITreeContentProvider { public void inputChanged(Viewer v, Object oldInput, Object newInput) { } public void dispose() { } public Object[] getElements(Object parent) { return getChildren(parent); } public Object getParent(Object child) { if (child instanceof TreeObject) { return ((TreeObject)child).getParent(); } return null; } public Object[] getChildren(Object parent) { if (parent instanceof TreeParent) { return ((TreeParent)parent).getChildren(); } return new Object[0]; } public boolean hasChildren(Object parent) { if (parent instanceof TreeParent) return ((TreeParent)parent).hasChildren(); return false; } } class ViewLabelProvider extends LabelProvider { public String getText(Object obj) { return obj.toString(); } public Image getImage(Object obj) { String imageKey = ISharedImages.IMG_OBJ_ELEMENT; if (obj instanceof TreeParent) imageKey = ISharedImages.IMG_OBJ_FOLDER; return PlatformUI.getWorkbench().getSharedImages().getImage(imageKey); } } /** * We will set up a dummy model to initialize tree heararchy. In real * code, you will connect to a real model and expose its hierarchy. */ private TreeObject createDummyModel() { TreeObject to1 = new TreeObject("Inbox"); TreeObject to2 = new TreeObject("Drafts"); TreeObject to3 = new TreeObject("Sent"); TreeParent p1 = new TreeParent("me@this.com"); p1.addChild(to1); p1.addChild(to2); p1.addChild(to3); TreeObject to4 = new TreeObject("Inbox"); TreeParent p2 = new TreeParent("other@aol.com"); p2.addChild(to4); TreeParent root = new TreeParent(""); root.addChild(p1); root.addChild(p2); return root; } /** * This is a callback that will allow us to create the viewer and initialize * it. */ 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(createDummyModel()); } /** * Passing the focus request to the viewer's control. */ public void setFocus() { viewer.getControl().setFocus(); } }