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
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27 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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31 * documentation are those of the authors and should not be
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33 * or implied, of GRNET S.A.
35 package gr.grnet.pithos.web.client;
37 import gr.grnet.pithos.web.client.foldertree.File;
38 import gr.grnet.pithos.web.client.foldertree.Folder;
40 import com.google.gwt.core.client.GWT;
41 import com.google.gwt.dom.client.NativeEvent;
42 import com.google.gwt.event.dom.client.ClickEvent;
43 import com.google.gwt.event.dom.client.ClickHandler;
44 import com.google.gwt.event.dom.client.KeyCodes;
45 import com.google.gwt.user.client.Event.NativePreviewEvent;
46 import com.google.gwt.user.client.ui.Button;
47 import com.google.gwt.user.client.ui.DialogBox;
48 import com.google.gwt.user.client.ui.FileUpload;
49 import com.google.gwt.user.client.ui.FormPanel;
50 import com.google.gwt.user.client.ui.FormPanel.SubmitCompleteEvent;
51 import com.google.gwt.user.client.ui.FormPanel.SubmitCompleteHandler;
52 import com.google.gwt.user.client.ui.FormPanel.SubmitEvent;
53 import com.google.gwt.user.client.ui.FormPanel.SubmitHandler;
54 import com.google.gwt.user.client.ui.Grid;
55 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
56 import com.google.gwt.user.client.ui.Hidden;
57 import com.google.gwt.user.client.ui.HorizontalPanel;
58 import com.google.gwt.user.client.ui.Label;
59 import com.google.gwt.user.client.ui.VerticalPanel;
62 * The 'File upload' dialog box implementation.
64 public class FileUploadDialog extends DialogBox {
66 public static final boolean DONE = true;
69 * The Form element that performs the file upload.
71 protected final FormPanel form = new FormPanel();
73 private final FileUpload upload = new FileUpload();
75 private final Label filenameLabel = new Label();
77 private final Label foldernameLabel = new Label();
79 private Button submit;
81 protected Folder folder;
86 * The widget's constructor.
88 public FileUploadDialog() {
89 // Set the dialog's caption.
90 setText("File upload");
91 setAnimationEnabled(true);
92 // Since we're going to add a FileUpload widget, we'll need to set the
93 // form to use the POST method, and multipart MIME encoding.
94 form.setEncoding(FormPanel.ENCODING_MULTIPART);
95 form.setMethod(FormPanel.METHOD_POST);
97 // Create a panel to hold all of the form widgets.
98 VerticalPanel panel = new VerticalPanel();
99 form.setWidget(panel);
101 final Hidden auth = new Hidden("X-Auth-Token", "");
103 upload.setName("X-Object-Data");
104 filenameLabel.setText("");
105 filenameLabel.setVisible(false);
106 filenameLabel.setStyleName("props-labels");
107 HorizontalPanel fileUploadPanel = new HorizontalPanel();
108 fileUploadPanel.add(filenameLabel);
109 fileUploadPanel.add(upload);
110 Grid generalTable = new Grid(2, 2);
111 generalTable.setText(0, 0, "Folder");
112 generalTable.setWidget(0, 1, foldernameLabel);
113 generalTable.setText(1, 0, "File");
114 generalTable.setWidget(1, 1, fileUploadPanel);
115 generalTable.getCellFormatter().setStyleName(0, 0, "props-labels");
116 generalTable.getCellFormatter().setStyleName(0, 1, "props-values");
117 generalTable.getCellFormatter().setStyleName(1, 0, "props-labels");
118 generalTable.getCellFormatter().setStyleName(1, 1, "props-values");
119 generalTable.setCellSpacing(4);
121 panel.add(generalTable);
123 // Create a panel to hold the buttons.
124 HorizontalPanel buttons = new HorizontalPanel();
126 // Create the 'upload' button, along with a listener that submits the
128 submit = new Button("Upload", new ClickHandler() {
130 public void onClick(@SuppressWarnings("unused") ClickEvent event) {
135 buttons.setCellHorizontalAlignment(submit, HasHorizontalAlignment.ALIGN_CENTER);
136 // Create the 'Cancel' button, along with a listener that hides the
137 // dialog when the button is clicked.
138 final Button cancel = new Button("Cancel", new ClickHandler() {
140 public void onClick(@SuppressWarnings("unused") ClickEvent event) {
145 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);
146 buttons.setSpacing(8);
148 panel.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);
150 // Add an event handler to the form.
151 form.addSubmitHandler(new SubmitHandler() {
154 public void onSubmit(@SuppressWarnings("unused") SubmitEvent event) {
155 auth.setValue(app.getToken()); //This is done here because the app object is not available in the constructor
158 form.addSubmitCompleteHandler(new SubmitCompleteHandler() {
161 public void onSubmitComplete(SubmitCompleteEvent event) {
162 // When the form submission is successfully completed, this
163 // event is fired. Assuming the service returned a response
164 // of type text/html, we can get the result text here (see
165 // the FormPanel documentation for further explanation).
166 String results = event.getResults();
168 // Unfortunately the results are never empty, even in
169 // the absense of errors, so we have to check for '<pre></pre>'.
170 if (results != null && results.length() > 0 && !results.equalsIgnoreCase("<pre></pre>")) {
171 GWT.log(results, null);
172 app.displayError(results);
174 app.updateFolder(folder, true);
183 protected void onPreviewNativeEvent(NativePreviewEvent preview) {
184 super.onPreviewNativeEvent(preview);
186 NativeEvent evt = preview.getNativeEvent();
187 if (evt.getType().equals("keydown"))
188 // Use the popup's key preview hooks to close the dialog when either
189 // enter or escape is pressed.
190 switch (evt.getKeyCode()) {
191 case KeyCodes.KEY_ENTER:
194 case KeyCodes.KEY_ESCAPE:
201 * Make any last minute checks and start the upload.
203 protected void prepareAndSubmit() {
204 if (upload.getFilename().length() == 0) {
205 app.displayError("You must select a file!");
208 final String fname = getFilename(upload.getFilename());
209 String apath = app.getApiPath() + app.getUsername() + folder.getUri() + "/" + fname;
210 form.setAction(apath);
211 submit.setEnabled(false);
212 upload.setVisible(false);
213 filenameLabel.setText(fname);
214 filenameLabel.setVisible(true);
216 if (getFileForName(fname) == null) {
220 // We are going to update an existing file, so show a confirmation dialog.
221 ConfirmationDialog confirm = new ConfirmationDialog("Are you sure " +
222 "you want to update " + fname + "?", "Update") {
225 public void cancel() {
226 FileUploadDialog.this.hide();
230 public void confirm() {
240 * Returns the file name from a potential full path argument. Apparently IE
241 * insists on sending the full path name of a file when uploading, forcing
242 * us to trim the extra path info. Since this is only observed on Windows we
243 * get to check for a single path separator value.
245 * @param name the potentially full path name of a file
246 * @return the file name without extra path information
248 protected String getFilename(String name) {
249 int pathSepIndex = name.lastIndexOf("\\");
250 if (pathSepIndex == -1) {
251 pathSepIndex = name.lastIndexOf("/");
252 if (pathSepIndex == -1)
255 return name.substring(pathSepIndex + 1);
258 protected File getFileForName(String name){
259 for (File f : folder.getFiles())
260 if (!f.isInTrash() && f.getName().equals(name))
265 public void setApp(Pithos app) {
269 public void setFolder(Folder folder) {
270 this.folder = folder;
271 foldernameLabel.setText(folder.getName());