2 * Copyright 2011 GRNET S.A. All rights reserved.
4 * Redistribution and use in source and binary forms, with or
5 * without modification, are permitted provided that the following
8 * 1. Redistributions of source code must retain the above
9 * copyright notice, this list of conditions and the following
12 * 2. Redistributions in binary form must reproduce the above
13 * copyright notice, this list of conditions and the following
14 * disclaimer in the documentation and/or other materials
15 * provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
18 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
21 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
24 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
27 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
30 * The views and conclusions contained in the software and
31 * documentation are those of the authors and should not be
32 * interpreted as representing official policies, either expressed
33 * or implied, of GRNET S.A.
36 package gr.grnet.pithos.web.client.foldertree;
38 import gr.grnet.pithos.web.client.FolderContextMenu;
39 import gr.grnet.pithos.web.client.Pithos;
40 import gr.grnet.pithos.web.client.foldertree.FolderTreeView.Templates;
41 import gr.grnet.pithos.web.client.rest.GetRequest;
42 import gr.grnet.pithos.web.client.rest.RestException;
44 import java.util.ArrayList;
45 import java.util.HashMap;
46 import java.util.HashSet;
47 import java.util.Iterator;
50 import com.google.gwt.cell.client.AbstractCell;
51 import com.google.gwt.cell.client.Cell;
52 import com.google.gwt.core.client.GWT;
53 import com.google.gwt.core.client.Scheduler;
54 import com.google.gwt.event.dom.client.ContextMenuEvent;
55 import com.google.gwt.http.client.Response;
56 import com.google.gwt.http.client.URL;
57 import com.google.gwt.safehtml.shared.SafeHtml;
58 import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
59 import com.google.gwt.user.client.Command;
60 import com.google.gwt.user.client.ui.AbstractImagePrototype;
61 import com.google.gwt.user.client.ui.HTML;
62 import com.google.gwt.user.client.ui.UIObject;
63 import com.google.gwt.view.client.AsyncDataProvider;
64 import com.google.gwt.view.client.HasData;
65 import com.google.gwt.view.client.ListDataProvider;
66 import com.google.gwt.view.client.SingleSelectionModel;
67 import com.google.gwt.view.client.TreeViewModel;
69 public class FolderTreeViewModel implements TreeViewModel {
73 private Cell<Folder> folderCell = new AbstractCell<Folder>(ContextMenuEvent.getType().getName()) {
76 public void render(@SuppressWarnings("unused") Context context, Folder folder, SafeHtmlBuilder safeHtmlBuilder) {
79 if (folder.isHome()) {
80 html = AbstractImagePrototype.create(FolderTreeView.images.home()).getHTML();
81 name = Templates.INSTANCE.nameSpan("Home");
83 else if (folder.isTrash()) {
84 html = AbstractImagePrototype.create(FolderTreeView.images.trash()).getHTML();
85 name = Templates.INSTANCE.nameSpan("Trash");
88 html = AbstractImagePrototype.create(FolderTreeView.images.folderYellow()).getHTML();
89 name = Templates.INSTANCE.nameSpan(folder.getName());
91 safeHtmlBuilder.appendHtmlConstant(html).appendHtmlConstant(" ");
92 safeHtmlBuilder.append(name);
96 public void onBrowserEvent(@SuppressWarnings("unused") Cell.Context context, @SuppressWarnings("unused") com.google.gwt.dom.client.Element parent, Folder folder, com.google.gwt.dom.client.NativeEvent event, @SuppressWarnings("unused") com.google.gwt.cell.client.ValueUpdater<Folder> valueUpdater) {
97 if (event.getType().equals(ContextMenuEvent.getType().getName())) {
98 FolderTreeViewModel.this.selectionModel.setSelected(folder, true);
99 FolderContextMenu menu = new FolderContextMenu(app, FolderTreeView.images, app.getSelectedTree(), folder);
100 menu.setPopupPosition(event.getClientX(), event.getClientY());
106 protected ListDataProvider<Folder> rootDataProvider = new ListDataProvider<Folder>();
108 private Map<Folder, ListDataProvider<Folder>> dataProviderMap = new HashMap<Folder, ListDataProvider<Folder>>();
110 protected SingleSelectionModel<Folder> selectionModel;
112 public FolderTreeViewModel(Pithos _app, SingleSelectionModel<Folder> selectionModel) {
114 this.selectionModel = selectionModel;
118 public <T> NodeInfo<?> getNodeInfo(T value) {
120 Folder f = new Folder("Loading ...");
121 rootDataProvider.getList().add(f);
122 return new DefaultNodeInfo<Folder>(rootDataProvider, folderCell, selectionModel, null);
124 final Folder f = (Folder) value;
125 if (dataProviderMap.get(f) == null) {
126 dataProviderMap.put(f, new ListDataProvider<Folder>());
128 final ListDataProvider<Folder> dataProvider = dataProviderMap.get(f);
129 //This prevents the loading indicator
130 // dataProvider.getList().clear();
131 // dataProvider.getList().addAll(f.getSubfolders());
132 fetchFolder(f, dataProvider, false, null);
133 return new DefaultNodeInfo<Folder>(dataProvider, folderCell, selectionModel, null);
137 public boolean isLeaf(Object o) {
138 if (o instanceof Folder) {
139 Folder f = (Folder) o;
140 return f.getSubfolders().isEmpty();
145 protected void fetchFolder(final Iterator<Folder> iter, final Command callback) {
146 if (iter.hasNext()) {
147 final Folder f = iter.next();
149 String path = "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix());
150 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwner(), path, f) {
152 public void onSuccess(@SuppressWarnings("unused") Folder _result) {
153 fetchFolder(iter, callback);
157 public void onError(Throwable t) {
158 GWT.log("Error getting folder", t);
159 if (t instanceof RestException)
160 app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
162 app.displayError("System error fetching folder: " + t.getMessage());
166 protected void onUnauthorized(Response response) {
167 app.sessionExpired();
170 getFolder.setHeader("X-Auth-Token", app.getToken());
171 Scheduler.get().scheduleDeferred(getFolder);
173 else if (callback != null)
177 public void initialize(final AccountResource account, final Command callback) {
178 Iterator<Folder> iter = account.getContainers().iterator();
179 fetchFolder(iter, new Command() {
181 public void execute() {
182 rootDataProvider.getList().clear();
183 rootDataProvider.getList().addAll(account.getContainers());
184 selectionModel.setSelected(rootDataProvider.getList().get(0), true);
185 if (callback != null)
191 public Folder getSelection() {
192 return selectionModel.getSelectedObject();
195 public void updateFolder(final Folder folder, boolean showfiles, final Command callback) {
196 if (dataProviderMap.get(folder) == null) {
197 dataProviderMap.put(folder, new ListDataProvider<Folder>());
199 final ListDataProvider<Folder> dataProvider = dataProviderMap.get(folder);
200 fetchFolder(folder, dataProvider, showfiles, new Command() {
203 public void execute() {
204 app.getFolderTreeView().openFolder(folder);
205 if (callback != null)
211 public void fetchFolder(final Folder f, final ListDataProvider<Folder> dataProvider, final boolean showfiles, final Command callback) {
212 String path = "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix());
213 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwner(), path, f) {
215 public void onSuccess(final Folder _result) {
217 app.showFiles(_result);
218 Iterator<Folder> iter = _result.getSubfolders().iterator();
219 fetchFolder(iter, new Command() {
221 public void execute() {
222 dataProvider.getList().clear();
223 dataProvider.getList().addAll(_result.getSubfolders());
224 // app.getFolderTreeView().updateChildren(f);
225 if (callback != null)
232 public void onError(Throwable t) {
233 GWT.log("Error getting folder", t);
234 if (t instanceof RestException)
235 app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
237 app.displayError("System error fetching folder: " + t.getMessage());
241 protected void onUnauthorized(Response response) {
242 app.sessionExpired();
245 getFolder.setHeader("X-Auth-Token", app.getToken());
246 Scheduler.get().scheduleDeferred(getFolder);