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.mysharedtree;
38 import gr.grnet.pithos.web.client.FolderContextMenu;
39 import gr.grnet.pithos.web.client.Pithos;
40 import gr.grnet.pithos.web.client.foldertree.File;
41 import gr.grnet.pithos.web.client.foldertree.Folder;
42 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView.Templates;
43 import gr.grnet.pithos.web.client.rest.GetRequest;
44 import gr.grnet.pithos.web.client.rest.RestException;
46 import java.util.HashMap;
47 import java.util.HashSet;
48 import java.util.Iterator;
49 import java.util.List;
53 import com.google.gwt.cell.client.AbstractCell;
54 import com.google.gwt.cell.client.Cell;
55 import com.google.gwt.cell.client.TextCell;
56 import com.google.gwt.cell.client.ValueUpdater;
57 import com.google.gwt.core.client.GWT;
58 import com.google.gwt.core.client.Scheduler;
59 import com.google.gwt.event.dom.client.ContextMenuEvent;
60 import com.google.gwt.http.client.Response;
61 import com.google.gwt.http.client.URL;
62 import com.google.gwt.safehtml.shared.SafeHtml;
63 import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
64 import com.google.gwt.text.shared.SafeHtmlRenderer;
65 import com.google.gwt.user.client.Command;
66 import com.google.gwt.user.client.ui.AbstractImagePrototype;
67 import com.google.gwt.view.client.ListDataProvider;
68 import com.google.gwt.view.client.SelectionChangeEvent;
69 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
70 import com.google.gwt.view.client.SingleSelectionModel;
71 import com.google.gwt.view.client.TreeViewModel;
73 public class MysharedTreeViewModel implements TreeViewModel {
77 private Cell<Folder> folderCell = new AbstractCell<Folder>() {
80 public void render(@SuppressWarnings("unused") Context context, Folder folder, SafeHtmlBuilder safeHtmlBuilder) {
81 String html = AbstractImagePrototype.create(MysharedTreeView.images.folderYellow()).getHTML();
82 safeHtmlBuilder.appendHtmlConstant(html).appendHtmlConstant(" ");
83 safeHtmlBuilder.append(Templates.INSTANCE.nameSpan(folder.getName()));
87 public void onBrowserEvent(@SuppressWarnings("unused") Context context, @SuppressWarnings("unused") com.google.gwt.dom.client.Element parent, Folder folder, com.google.gwt.dom.client.NativeEvent event, @SuppressWarnings("unused") ValueUpdater<Folder> valueUpdater) {
88 if (event.getType().equals(ContextMenuEvent.getType().getName())) {
89 MysharedTreeViewModel.this.selectionModel.setSelected(folder, true);
90 FolderContextMenu menu = new FolderContextMenu(app, MysharedTreeView.images, app.getSelectedTree(), folder);
91 menu.setPopupPosition(event.getClientX(), event.getClientY());
97 protected ListDataProvider<Folder> firstLevelDataProvider = new ListDataProvider<Folder>();
99 private Map<Folder, ListDataProvider<Folder>> dataProviderMap = new HashMap<Folder, ListDataProvider<Folder>>();
101 protected Set<File> sharedFiles = new HashSet<File>();
103 protected SingleSelectionModel<Folder> selectionModel;
105 public MysharedTreeViewModel(Pithos _app, SingleSelectionModel<Folder> selectionModel) {
107 this.selectionModel = selectionModel;
111 public <T> NodeInfo<?> getNodeInfo(T value) {
113 ListDataProvider<String> rootDataProvider = new ListDataProvider<String>();
114 rootDataProvider.getList().add("My Shared");
115 final SingleSelectionModel<String> selectionModel2 = new SingleSelectionModel<String>();
116 selectionModel2.addSelectionChangeHandler(new Handler() {
119 public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
120 if (selectionModel2.getSelectedObject() != null) {
121 app.deselectOthers(app.getMySharedTreeView(), selectionModel2);
122 app.applyPermissions(null);
123 fetchSharedFiles(true);
127 app.addSelectionModel(selectionModel2);
128 return new DefaultNodeInfo<String>(rootDataProvider, new TextCell(new SafeHtmlRenderer<String>() {
130 public SafeHtml render(String object) {
131 SafeHtmlBuilder builder = new SafeHtmlBuilder();
132 render(object, builder);
133 return builder.toSafeHtml();
137 public void render(String object, SafeHtmlBuilder builder) {
138 String html = AbstractImagePrototype.create(MysharedTreeView.images.myShared()).getHTML();
139 builder.appendHtmlConstant(html).appendHtmlConstant(" ");
140 builder.append(MysharedTreeView.Templates.INSTANCE.nameSpan(object));
142 }), selectionModel2, null);
144 else if (value instanceof String) {
145 fetchSharedContainers(null);
146 return new DefaultNodeInfo<Folder>(firstLevelDataProvider, folderCell, selectionModel, null);
149 final Folder f = (Folder) value;
150 if (dataProviderMap.get(f) == null) {
151 dataProviderMap.put(f, new ListDataProvider<Folder>());
153 final ListDataProvider<Folder> dataProvider = dataProviderMap.get(f);
154 fetchFolder(f, dataProvider, false);
155 return new DefaultNodeInfo<Folder>(dataProvider, folderCell, selectionModel, null);
159 protected void fetchSharedFiles(final boolean showFiles) {
161 final List<Folder> containers = app.getAccount().getContainers();
162 final ListDataProvider<Folder> tempProvider = new ListDataProvider<Folder>();
163 Iterator<Folder> iter = containers.iterator();
164 fetchFolder(iter, tempProvider, new Command() {
167 public void execute() {
168 firstLevelDataProvider.getList().clear();
169 firstLevelDataProvider.getList().addAll(tempProvider.getList());
171 app.showFiles(sharedFiles);
176 private void fetchSharedContainers(final Command callback) {
177 final List<Folder> containers = app.getAccount().getContainers();
178 final ListDataProvider<Folder> tempProvider = new ListDataProvider<Folder>();
179 Iterator<Folder> iter = containers.iterator();
180 fetchFolder(iter, tempProvider, new Command() {
183 public void execute() {
184 firstLevelDataProvider.getList().clear();
185 firstLevelDataProvider.getList().addAll(tempProvider.getList());
186 if (callback != null)
193 public boolean isLeaf(Object o) {
196 else if (o instanceof Folder) {
197 Folder f = (Folder) o;
198 return f.getSubfolders().isEmpty();
201 return firstLevelDataProvider.getList().isEmpty();
205 protected void fetchFolder(final Iterator<Folder> iter, final ListDataProvider<Folder> dataProvider, final Command callback) {
206 if (iter.hasNext()) {
207 final Folder f = iter.next();
209 String path = "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix());
210 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwner(), path, f) {
212 public void onSuccess(Folder _result) {
213 if (!_result.isShared()) {
214 for (File file : _result.getFiles()) {
216 sharedFiles.add(file);
218 Iterator<Folder> iter2 = _result.getSubfolders().iterator();
219 fetchFolder(iter2, dataProvider, new Command() {
222 public void execute() {
223 fetchFolder(iter, dataProvider, callback);
228 dataProvider.getList().add(_result);
229 fetchFolder(iter, dataProvider, callback);
234 public void onError(Throwable t) {
235 GWT.log("Error getting folder", t);
237 if (t instanceof RestException)
238 app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
240 app.displayError("System error fetching folder: " + t.getMessage());
244 protected void onUnauthorized(Response response) {
245 app.sessionExpired();
248 getFolder.setHeader("X-Auth-Token", app.getToken());
249 Scheduler.get().scheduleDeferred(getFolder);
251 else if (callback != null)
255 public Folder getSelection() {
256 return selectionModel.getSelectedObject();
259 public void updateFolder(Folder folder, boolean showfiles) {
260 if (dataProviderMap.get(folder) == null) {
261 dataProviderMap.put(folder, new ListDataProvider<Folder>());
263 final ListDataProvider<Folder> dataProvider = dataProviderMap.get(folder);
264 fetchFolder(folder, dataProvider, showfiles);
267 public void fetchFolder(final Folder f, final ListDataProvider<Folder> dataProvider, final boolean showfiles) {
268 String path = "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix());
269 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwner(), path, f) {
271 public void onSuccess(final Folder _result) {
273 app.showFiles(_result);
274 Iterator<Folder> iter = _result.getSubfolders().iterator();
275 fetchFolder(iter, dataProvider, new Command() {
277 public void execute() {
278 dataProvider.getList().clear();
279 dataProvider.getList().addAll(_result.getSubfolders());
280 app.getMySharedTreeView().updateChildren(f);
286 public void onError(Throwable t) {
287 GWT.log("Error getting folder", t);
289 if (t instanceof RestException)
290 app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
292 app.displayError("System error fetching folder: " + t.getMessage());
296 protected void onUnauthorized(Response response) {
297 app.sessionExpired();
300 getFolder.setHeader("X-Auth-Token", app.getToken());
301 Scheduler.get().scheduleDeferred(getFolder);
304 public void initialize(Command callback) {
305 fetchSharedContainers(callback);