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Diff Revisions 947 vs 948 for /trunk/GWT_Sandbox/Upload/src/org/litesoft/sandbox/csapp/client/widgets/UploadWidget.java

Diff revisions: vs.
  @@ -5,10 +5,8 @@
5 5 import com.google.gwt.user.client.*;
6 6 import com.google.gwt.user.client.ui.*;
7 7
8 - public class UploadWidget extends Composite implements IsWidget
9 - {
10 - public interface Callback
11 - {
8 + public class UploadWidget extends Composite implements IsWidget {
9 + public interface Callback {
12 10 public Image createBusyImage();
13 11
14 12 public Widget createWaitingMessageWidget( Widget secondsRemaining );
  @@ -38,8 +36,7 @@
38 36 private Timer timer;
39 37 private boolean sized = false;
40 38
41 - public UploadWidget( ButtonBase illusionaryClickWidget, ButtonBase removeButton, int secondsToWait, Callback callback )
42 - {
39 + public UploadWidget( ButtonBase illusionaryClickWidget, ButtonBase removeButton, int secondsToWait, Callback callback ) {
43 40 this.removeButton = removeButton;
44 41 this.secondsToWait = secondsToWait;
45 42 this.callback = callback;
  @@ -49,31 +46,27 @@
49 46
50 47 //<div style="display: block; width: 100px; height: 20px; overflow: hidden;">
51 48 //<button style="width: 110px; height: 30px; position: relative; top: -5px; left: -5px;"><a href="javascript: void(0)">Upload File</a></button>
52 - //<input type="file" id="upload_input" name="upload" style="font-size: 50px; width: 120px; opacity: 0; filter:alpha(opacity: 0); position: relative; top: -40px;; left: -20px" />
49 + //<input type="file" id="upload_input" name="upload" style="font-size: 50px; width: 120px; opacity: 0; filter:alpha(opacity: 0); position: relative;
50 + // top: -40px;; left: -20px" />
53 51 //</div>
54 52
55 - formPanel.addSubmitCompleteHandler( new FormPanel.SubmitCompleteHandler()
56 - {
53 + formPanel.addSubmitCompleteHandler( new FormPanel.SubmitCompleteHandler() {
57 54 @Override
58 - public void onSubmitComplete( FormPanel.SubmitCompleteEvent event )
59 - {
55 + public void onSubmitComplete( FormPanel.SubmitCompleteEvent event ) {
60 56 submitResponse( event.getResults() );
61 57 }
62 58 } );
63 59 }
64 60
65 - public void setServletPath( String url )
66 - {
61 + public void setServletPath( String url ) {
67 62 servletPath = noEmpty( url );
68 63 }
69 64
70 - public void setEnabled( boolean enable )
71 - {
65 + public void setEnabled( boolean enable ) {
72 66 enableWidgets( externallyEnabled = enable );
73 67 }
74 68
75 - private void enableWidgets( boolean enable )
76 - {
69 + private void enableWidgets( boolean enable ) {
77 70 enable &= externallyEnabled;
78 71 removeButton.setEnabled( enable );
79 72 illusionaryClickWidget.setEnabled( enable );
  @@ -81,40 +74,32 @@
81 74 }
82 75
83 76 @Override
84 - protected void onAttach()
85 - {
77 + protected void onAttach() {
86 78 super.onAttach();
87 79 startTimer();
88 80 }
89 81
90 82 @Override
91 - protected void onDetach()
92 - {
83 + protected void onDetach() {
93 84 stopTimer();
94 85 super.onDetach();
95 86 }
96 87
97 - private void stopTimer()
98 - {
99 - if ( timer != null )
100 - {
88 + private void stopTimer() {
89 + if ( timer != null ) {
101 90 timer.cancel();
102 91 timer = null;
103 92 }
104 93 }
105 94
106 - private void startTimer()
107 - {
95 + private void startTimer() {
108 96 stopTimer();
109 - (timer = new Timer()
110 - {
97 + (timer = new Timer() {
111 98 @Override
112 - public void run()
113 - {
99 + public void run() {
114 100 sized = sized || size();
115 101 String filename = noEmpty( upload.getFilename() );
116 - if ( filename != null )
117 - {
102 + if ( filename != null ) {
118 103 stopTimer();
119 104 submitForm( lastSubmittedFileName = filename );
120 105 formPanel.reset();
  @@ -123,41 +108,33 @@
123 108 }).scheduleRepeating( 250 );
124 109 }
125 110
126 - private boolean size()
127 - {
111 + private boolean size() {
128 112 int width = sizingWidget.getOffsetWidth();
129 113 int height = sizingWidget.getOffsetHeight();
130 - if ( (width < 16) || (height < 16) )
131 - {
114 + if ( (width < 16) || (height < 16) ) {
132 115 return false;
133 116 }
134 117 viewPort.setSize( width + "px", height + "px" );
135 118 return true;
136 119 }
137 120
138 - private void resetUploadWidget()
139 - {
121 + private void resetUploadWidget() {
140 122 enableWidgets( true );
141 123 startTimer();
142 124 }
143 125
144 - private String noEmpty( String string )
145 - {
146 - if ( string != null )
147 - {
148 - if ( (string = string.trim()).length() != 0 )
149 - {
126 + private String noEmpty( String string ) {
127 + if ( string != null ) {
128 + if ( (string = string.trim()).length() != 0 ) {
150 129 return string;
151 130 }
152 131 }
153 132 return null;
154 133 }
155 134
156 - private void submitForm( String filename )
157 - {
135 + private void submitForm( String filename ) {
158 136 System.out.println( "UploadWidget.submitForm: " + filename + " to " + servletPath );
159 - if ( servletPath == null )
160 - {
137 + if ( servletPath == null ) {
161 138 Window.alert( "No Servlet Path Set" );
162 139 return;
163 140 }
  @@ -168,37 +145,32 @@
168 145 showBusy();
169 146 }
170 147
171 - private void timeout()
172 - {
148 + private void timeout() {
173 149 hideBusy();
174 150 resetUploadWidget();
175 151 callback.timeout( lastSubmittedFileName );
176 152 }
177 153
178 - private void submitResponse( String htmlResponse )
179 - {
154 + private void submitResponse( String htmlResponse ) {
180 155 hideBusy();
181 156 resetUploadWidget();
182 157 callback.parseResponse( lastSubmittedFileName, htmlResponse );
183 158 }
184 159
185 - private static Widget createConstrainer( Widget widget )
186 - {
160 + private static Widget createConstrainer( Widget widget ) {
187 161 HorizontalPanel constrainer = new HorizontalPanel();
188 162 constrainer.add( widget );
189 163 return constrainer;
190 164 }
191 165
192 - private static Widget createStylingDiv( String styleName, Widget widget )
193 - {
166 + private static Widget createStylingDiv( String styleName, Widget widget ) {
194 167 SimplePanel divBasePanel = new SimplePanel();
195 168 divBasePanel.addStyleName( styleName );
196 169 divBasePanel.setWidget( widget );
197 170 return divBasePanel;
198 171 }
199 172
200 - private static Widget createFlowPanel( Widget widget1, Widget widget2 )
201 - {
173 + private static Widget createFlowPanel( Widget widget1, Widget widget2 ) {
202 174 FlowPanel panel = new FlowPanel();
203 175 panel.getElement().getStyle().setPosition( Style.Position.RELATIVE );
204 176 panel.add( widget1 );
  @@ -206,8 +178,7 @@
206 178 return panel;
207 179 }
208 180
209 - private static SimplePanel createViewPort( Widget widget )
210 - {
181 + private static SimplePanel createViewPort( Widget widget ) {
211 182 SimplePanel viewPort = new SimplePanel();
212 183 Element element = viewPort.getElement();
213 184 Style style = element.getStyle();
  @@ -220,8 +191,7 @@
220 191 return viewPort;
221 192 }
222 193
223 - private static SimplePanel createFormFloater( Widget widget )
224 - {
194 + private static SimplePanel createFormFloater( Widget widget ) {
225 195 SimplePanel panel = new SimplePanel();
226 196 panel.setSize( "1000px", "400px" );
227 197 Style style = panel.getElement().getStyle();
  @@ -232,8 +202,7 @@
232 202 return panel;
233 203 }
234 204
235 - private static FormPanel createFormPanel( FileUpload upload )
236 - {
205 + private static FormPanel createFormPanel( FileUpload upload ) {
237 206 FormPanel form = new FormPanel();
238 207 form.add( upload );
239 208 Style style = form.getElement().getStyle();
  @@ -246,8 +215,7 @@
246 215 return form;
247 216 }
248 217
249 - private static FileUpload createFileUploadWidget()
250 - {
218 + private static FileUpload createFileUploadWidget() {
251 219 FileUpload upload = new FileUpload();
252 220 upload.setName( "UploadWidget" + instance++ );
253 221 upload.getElement().setAttribute( "size", "1" );
  @@ -261,23 +229,18 @@
261 229 return upload;
262 230 }
263 231
264 - protected void hideBusy()
265 - {
266 - if ( busyPopup != null )
267 - {
232 + protected void hideBusy() {
233 + if ( busyPopup != null ) {
268 234 busyPopup.hide();
269 235 busyPopup = null;
270 236 }
271 237 }
272 238
273 - protected void showBusy()
274 - {
239 + protected void showBusy() {
275 240 hideBusy();
276 - (busyPopup = new OurBusyPopup()).setPopupPositionAndShow( new PopupPanel.PositionCallback()
277 - {
241 + (busyPopup = new OurBusyPopup()).setPopupPositionAndShow( new PopupPanel.PositionCallback() {
278 242 @Override
279 - public void setPosition( int offsetWidth, int offsetHeight )
280 - {
243 + public void setPosition( int offsetWidth, int offsetHeight ) {
281 244 int left = (Window.getClientWidth() - offsetWidth) / 2;
282 245 int top = (Window.getClientHeight() - offsetHeight) / 2;
283 246 busyPopup.setPopupPosition( left, top );
  @@ -287,8 +250,7 @@
287 250
288 251 private OurBusyPopup busyPopup;
289 252
290 - private class OurBusyPopup extends PopupPanel
291 - {
253 + private class OurBusyPopup extends PopupPanel {
292 254 private Widget messageWidget;
293 255 private boolean messageShowing = false;
294 256 private int secondsRemaining = secondsToWait;
  @@ -297,8 +259,7 @@
297 259 private float currentOpacity = 0;
298 260 private Timer timer;
299 261
300 - private OurBusyPopup()
301 - {
262 + private OurBusyPopup() {
302 263 setModal( true );
303 264 setGlassEnabled( true );
304 265 getGlassElement().getStyle().setBackgroundColor( "#fff" );
  @@ -309,8 +270,7 @@
309 270 outerpanel.setStyleName( "UploadWidgetBusyContainer" );
310 271 outerpanel.setHorizontalAlignment( HasHorizontalAlignment.ALIGN_CENTER );
311 272 Image busyImage = callback.createBusyImage();
312 - if ( busyImage != null )
313 - {
273 + if ( busyImage != null ) {
314 274 outerpanel.add( busyImage );
315 275 }
316 276 outerpanel.add( createStylingDiv( "UploadWidgetBusyMessage", callback.createWaitingMessageWidget( secondsRemainingLabel ) ) );
  @@ -320,48 +280,38 @@
320 280 }
321 281
322 282 @Override
323 - public void hide()
324 - {
283 + public void hide() {
325 284 stopTimer();
326 285 super.hide();
327 286 }
328 287
329 - private void stopTimer()
330 - {
331 - if ( timer != null )
332 - {
288 + private void stopTimer() {
289 + if ( timer != null ) {
333 290 timer.cancel();
334 291 timer = null;
335 292 }
336 293 }
337 294
338 - private void startTimer()
339 - {
295 + private void startTimer() {
340 296 stopTimer();
341 - (timer = new Timer()
342 - {
297 + (timer = new Timer() {
343 298 @Override
344 - public void run()
345 - {
346 - if ( currentOpacity < 0.75 )
347 - {
299 + public void run() {
300 + if ( currentOpacity < 0.75 ) {
348 301 getGlassElement().getStyle().setOpacity( currentOpacity += 0.025 );
349 302 }
350 303 int secondsPassed = (int) ((System.currentTimeMillis() - started) / 1000);
351 - if ( (secondsPassed > 1) && !messageShowing )
352 - {
304 + if ( (secondsPassed > 1) && !messageShowing ) {
353 305 messageShowing = true;
354 306 messageWidget.getElement().getStyle().setVisibility( Style.Visibility.VISIBLE );
355 307 }
356 308 int calcSecondsRemaining = secondsToWait - secondsPassed;
357 - if ( calcSecondsRemaining < 1 )
358 - {
309 + if ( calcSecondsRemaining < 1 ) {
359 310 stopTimer();
360 311 timeout();
361 312 return;
362 313 }
363 - if ( calcSecondsRemaining != secondsRemaining )
364 - {
314 + if ( calcSecondsRemaining != secondsRemaining ) {
365 315 secondsRemainingLabel.setText( (secondsRemaining = calcSecondsRemaining) + "" );
366 316 }
367 317 }

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