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This code causes the DOM element to disappear over a period of half a second (500 milliseconds)The way that it works internally is that the element s height is changed from the original height to a new height of zero over the duration of the effect and then hiddenThe original element takes up no space on the page after it is hidden so any elements below it are moved up as it disappears 16333 dojofxwipeIn This function is the inverse of the previous function It causes an element to reappear after it has been wiped out using the dojofxwipeOut function However, the resulting look might not be exactly what you imaginedThe resulting element might have a smaller height than it did originallyThe reason for this is that there are two ways to set the height of an elementThe first uses the height style property and is used to explicitly set the heightThe second technique is to let the browser figure out what the height should be based on the content of the elementThe Dojo documentation refers to this as the natural height After the element s height is set to zero using dojofxwipeOut, Dojo doesn t remember the original height, so it allows the browser to recalculate it using the natural method, which may be different than the original height

private string[] GetText(XmlElement xmlCourse, string tagName) { // Implementation of GetText } } }

The corresponding view is in FileUploadViewjava:

The fourth step of the tutorial demonstrates some of Dojo s powerful widgets and is contained in 4, Using Dojo Widgets

Monitoring events with serviced components is disabled by default, because it causes some overhead With event tracking enabled, every method call to the component is intercepted to inject the event handling service functionality To make interception possible, every component is running within a different context On the positive side, however, this option is an easy way to monitor the application

package comfkerekimvpprojectclientfileUpload; // imports public class FileUploadView extends View implements FileUploadDisplay {

The class ServicedComponent has some protected methods (Table 2-3) that can be overridden for use with some of the services that were discussed in 1 All these methods are used in this chapter

1

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Protected Method Construct Description The method Construct can be overridden to get an object initialization string at object creation The default construction string can be specified with the attribute [Construction-Enabled] ActivateDeactivateCanBePooled The methods Activate, Deactivate, and CanBePooled are used for pooled objects Dispose Calling Dispose releases the unmanaged resources held by the serviced component With the exception of JITA-configured serviced components, you should invoke Dispose to release resources early With JITA, there is not a 100 percent rule, as discussed later in this chapter

@UiTemplate("FileUploadViewuixml") interface Binder extends UiBinder<FormPanel, FileUploadView> { } @UiField FormPanel uploadForm; @UiField FileUpload fileToUpload; @UiField Button uploadButton; SimpleCallback<SubmitCompleteEvent> onSubmitCompleteCallback; SimpleCallback<SubmitEvent> onSubmitCallback; SimpleCallback<Object> onUploadClickCallback; private static final Binder binder = GWTcreate(Binderclass); public FileUploadView() { final FormPanel dlp = bindercreateAndBindUi(this); initWidget(dlp); uploadFormsetAction("/mvpproject/fileprocess"); uploadFormsetEncoding(FormPanelENCODING_MULTIPART); uploadFormsetMethod(FormPanelMETHOD_POST); } @Override public String getFileToUploadName() { return fileToUploadgetFilename(); } @UiHandler("uploadForm") public void onSubmitComplete(final SubmitCompleteEvent event) { onSubmitCompleteCallbackgoBack(event); } @UiHandler("uploadForm") public void onSubmitForm(final SubmitEvent event) { onSubmitCallbackgoBack(event); } @Override public void setSubmitCallback(final SimpleCallback<SubmitEvent> scb) { onSubmitCallback = scb; } @Override public void setSubmitCompleteCallback( final SimpleCallback<SubmitCompleteEvent> scb) {

Eye candy is the term some designers use to describe cool visual effects Drag anddrop in Google Maps is at least partly an eye candy feature Not only does Dojo allow us to enhance existing HTML form elements, but it also provides entire new visual elements called widgets, which provide new form elements not available in HTML For example, one of the problems with service date was that the user really needs to see a calendar to pick the dateWe can add the Dojo Date Picker widget, which causes a calendar to display right on the pageWe can also replace the simple <textarea> element with a full-blown rich text editor widget

This document was created by an unregistered ChmMagic, please go to http://wwwbisentercom to register it Thanks

The fifth and final step of the tutorial demonstrates form processing and submission and is discussed in 5 The final step of the tutorial deals with treating the form elements as an integrated wholeWe look at how to verify that all the client-side validations have been performed before the form is submitted, and we see how to submit the form I hate to ruin the end of the movie, but here goes (spoiler alert): Dojo will submit the form data as through it were a regular HTML form In other words, we won t have to modify the component on the server that processes the form dataThe server won t even know that the form has been Dojo-ized That will save us some work on the server

onSubmitCompleteCallback = scb; } @Override public void setUploadClickCallback(final SimpleCallback<Object> scb) { onUploadClickCallback = scb; } @Override public void submitForm() { uploadFormsubmit(); } @UiHandler("uploadButton") void uiOnUploadClick(final ClickEvent event) { onUploadClickCallbackgoBack(null); } }

With the class, you can specify many attributes to influence the use of services All the attributes that can be specified at the class level are listed in Table 2-4

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