2 * Copyright 2011-2012 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
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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.Iterator;
49 import com.google.gwt.cell.client.AbstractCell;
50 import com.google.gwt.cell.client.Cell;
51 import com.google.gwt.core.client.GWT;
52 import com.google.gwt.core.client.Scheduler;
53 import com.google.gwt.event.dom.client.ContextMenuEvent;
54 import com.google.gwt.http.client.Response;
55 import com.google.gwt.http.client.URL;
56 import com.google.gwt.safehtml.shared.SafeHtml;
57 import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
58 import com.google.gwt.user.client.Command;
59 import com.google.gwt.user.client.ui.AbstractImagePrototype;
60 import com.google.gwt.view.client.ListDataProvider;
61 import com.google.gwt.view.client.SingleSelectionModel;
62 import com.google.gwt.view.client.TreeViewModel;
64 public class FolderTreeViewModel implements TreeViewModel {
68 private Cell<Folder> folderCell = new AbstractCell<Folder>(ContextMenuEvent.getType().getName()) {
71 public void render(Context context, Folder folder, SafeHtmlBuilder safeHtmlBuilder) {
74 if (folder.isHome()) {
75 html = AbstractImagePrototype.create(FolderTreeView.images.folderYellow()).getHTML();
76 name = Templates.INSTANCE.nameSpan("Pithos");
78 else if (folder.isTrash()) {
79 html = AbstractImagePrototype.create(FolderTreeView.images.trash()).getHTML();
80 name = Templates.INSTANCE.nameSpan("Trash");
83 html = AbstractImagePrototype.create(folder.isShared() ? FolderTreeView.images.myShared() : FolderTreeView.images.folderYellow()).getHTML();
84 name = Templates.INSTANCE.nameSpan(folder.getName());
86 safeHtmlBuilder.appendHtmlConstant(html).appendHtmlConstant(" ");
87 safeHtmlBuilder.append(name);
91 public void onBrowserEvent(Cell.Context context, com.google.gwt.dom.client.Element parent, final Folder folder, com.google.gwt.dom.client.NativeEvent event, com.google.gwt.cell.client.ValueUpdater<Folder> valueUpdater) {
92 if (event.getType().equals(ContextMenuEvent.getType().getName())) {
93 final int x = event.getClientX();
94 final int y = event.getClientY();
95 FolderTreeViewModel.this.selectionModel.setSelected(folder, true);
96 app.scheduleFolderHeadCommand(folder, new Command() {
99 public void execute() {
100 FolderContextMenu menu = new FolderContextMenu(app, FolderTreeView.images, app.getSelectedTree(), folder);
101 menu.setPopupPosition(x, y);
109 protected ListDataProvider<Folder> rootDataProvider = new ListDataProvider<Folder>();
111 private Map<Folder, ListDataProvider<Folder>> dataProviderMap = new HashMap<Folder, ListDataProvider<Folder>>();
113 protected SingleSelectionModel<Folder> selectionModel;
115 public FolderTreeViewModel(Pithos _app, SingleSelectionModel<Folder> selectionModel) {
117 this.selectionModel = selectionModel;
121 public <T> NodeInfo<?> getNodeInfo(T value) {
123 Folder f = new Folder("Loading ...");
124 rootDataProvider.getList().add(f);
125 return new DefaultNodeInfo<Folder>(rootDataProvider, folderCell, selectionModel, null);
127 final Folder f = (Folder) value;
128 if (dataProviderMap.get(f) == null) {
129 dataProviderMap.put(f, new ListDataProvider<Folder>());
131 final ListDataProvider<Folder> dataProvider = dataProviderMap.get(f);
132 //This prevents the loading indicator
133 // dataProvider.getList().clear();
134 // dataProvider.getList().addAll(f.getSubfolders());
135 fetchFolder(f, dataProvider, false, null);
136 return new DefaultNodeInfo<Folder>(dataProvider, folderCell, selectionModel, null);
140 public boolean isLeaf(Object o) {
141 if (o instanceof Folder) {
142 Folder f = (Folder) o;
143 return f.getSubfolders().isEmpty();
148 private native void log(String msg) /*-{
149 $wnd.console.log(msg);
152 protected void fetchFolder(final Iterator<Folder> iter, final Command callback) {
153 if (iter.hasNext()) {
154 final Folder f = iter.next();
156 String path = "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix());
157 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwner(), path, f) {
159 public void onSuccess(Folder _result) {
160 fetchFolder(iter, callback);
164 public void onError(Throwable t) {
165 GWT.log("Error getting folder", t);
167 if (t instanceof RestException)
168 app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
170 app.displayError("System error fetching folder: " + t.getMessage());
174 protected void onUnauthorized(Response response) {
175 app.sessionExpired();
178 getFolder.setHeader("X-Auth-Token", app.getToken());
179 Scheduler.get().scheduleDeferred(getFolder);
181 else if (callback != null)
185 public void initialize(final AccountResource account, final Command callback) {
186 Iterator<Folder> iter = account.getContainers().listIterator();
187 fetchFolder(iter, new Command() {
189 public void execute() {
190 rootDataProvider.getList().clear();
192 for (Folder c : account.getContainers()) {
194 rootDataProvider.getList().add(0, c); //Pithos is always first
195 else if (c.isTrash())
196 t = c; //Keep trash for adding in the end
198 rootDataProvider.getList().add(c);
201 rootDataProvider.getList().add(t);
202 selectionModel.setSelected(rootDataProvider.getList().get(0), true);
203 if (callback != null)
209 public Folder getSelection() {
210 return selectionModel.getSelectedObject();
213 public void updateFolder(final Folder folder, boolean showfiles, final Command callback, final boolean openParent) {
214 if (dataProviderMap.get(folder) == null) {
215 dataProviderMap.put(folder, new ListDataProvider<Folder>());
217 final ListDataProvider<Folder> dataProvider = dataProviderMap.get(folder);
218 fetchFolder(folder, dataProvider, showfiles, new Command() {
221 public void execute() {
223 app.getFolderTreeView().openFolder(folder);
224 if (callback != null)
230 public void fetchFolder(final Folder f, final ListDataProvider<Folder> dataProvider, final boolean showfiles, final Command callback) {
231 String path = "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix());
232 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, app.getApiPath(), f.getOwner(), path, f) {
234 public void onSuccess(final Folder _result) {
236 app.showFiles(_result);
237 int defaultSize = app.getFolderTreeView().tree.getDefaultNodeSize();
238 int size = _result.getSubfolders().size();
239 if (size > defaultSize)
240 app.getFolderTreeView().tree.setDefaultNodeSize(size);
241 Iterator<Folder> iter = new ArrayList<Folder>(_result.getSubfolders()).listIterator();
242 fetchFolder(iter, new Command() {
244 public void execute() {
245 dataProvider.getList().clear();
246 dataProvider.getList().addAll(_result.getSubfolders());
247 if (callback != null)
254 public void onError(Throwable t) {
255 GWT.log("Error getting folder", t);
257 if (t instanceof RestException)
258 app.displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
260 app.displayError("System error fetching folder: " + t.getMessage());
264 protected void onUnauthorized(Response response) {
265 app.sessionExpired();
268 getFolder.setHeader("X-Auth-Token", app.getToken());
269 Scheduler.get().scheduleDeferred(getFolder);