gwt | 易学教程

what is best way to paging big Resultset -Java

阅读更多关于 what is best way to paging big Resultset -Java

问题 i am looking for best aproach from perfomance point of view , to show Resultset on webpage partially , lets say by 10 item per page and if user want to see more result, he pressing "next" btn . i think (probablly wrong) it should be new request to the Server when "Next" button is pressed ?? currentlly i trying to learn Java,GWT thank You! PS: sorry for my English. 回答1: The answer would depend on your users' behavior: how often will the look at page 2, or page 10, or page 100. If they rarely

GWT: Best practice for unit testing / mocking JSNI methods?

阅读更多关于 GWT: Best practice for unit testing / mocking JSNI methods?

问题 I have a class which uses JSNI to retrieve JSON data stored in the host page: protected native JsArray<JsonModel> getModels() /*-{ return $wnd.jsonData; }-*/; This method is called, and the data is then translated and process in a different method. How should I unit test this class, since I'm not able to instantiate (or seemingly mock?) JsArray? What is the best way to unit test JSNI methods at all? 回答1: The interface approach is the best approach, and not necessarily an overkill. As to the

GWT Logger: No control over debug output?

阅读更多关于 GWT Logger: No control over debug output?

问题 I'm having the following in my client.gwt.xml file: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 2.5.1//EN" "http://gwtproject.org/doctype/2.7.0/gwt-module.dtd"> <module rename-to='client'> <inherits name="com.mz.client.app" /> <source path="client"/> <inherits name="com.google.gwt.logging.Logging"/> <set-property name="gwt.logging.logLevel" value="FINER"/> <set-property name="gwt.logging.enabled" value="TRUE"/> <set-property name="gwt

Get rid of padding/margin around <canvas> element?

阅读更多关于 Get rid of padding/margin around element?

问题 I have a canvas object in a div. The canvas seems to have a padding around it somehow. I want its edges to touch the edges of the browser screen: // my html file: <body> <div id="canvasholder"></div> </body> // my java gwt code Canvas canvas = Canvas.createIfSupported(); canvas.setWidth("100%"); canvas.setHeight("100%"); RootPanel.get("canvasholder").add(canvas); but yeah the page still has a ~20px margin around the canvas element. There is nothing else on the page beside what's copied above.

How can we count the time of process?

阅读更多关于 How can we count the time of process?

问题 I created a PopupPanel and have shown it. I want to hide it after one minute has passed. During that one minute, the process should not be stopped or paused. How can I achieve this behavior? 回答1: GWT has its own implementation of Timer. Here a really small example: public void onModuleLoad() { final PopupPanel popUp = new PopupPanel(); Label text = new Label("gone in a sec"); popUp.setWidget(text); Timer timer = new Timer() { @Override public void run() { popUp.hide(); } }; popUp.center();

ie6 wast not previously defined error in GWT 2.6.0/GXT2.5.1

阅读更多关于 ie6 wast not previously defined error in GWT 2.6.0/GXT2.5.1

问题 I got the following error when compiling the code with GWT 2.6.0 and GXT 2.5.1. Loading inherited module 'com.sencha.gxt.ui.GXT'L Loading inherited module 'com.sencha.gxt.data.Data' Loading inherited module 'com.sencha.gxt.core.Core' [ERROR] The value ie6 was not previously defined. [ERROR] Line 96: Unexpected exception while processing element 'set-property' Even though we don't specify ie6 in gxt.user.agent, we still get the error: "[ERROR] The value ie6 was not previously defined." Why

open/save file in smartGWT

阅读更多关于 open/save file in smartGWT

问题 I have implemented RPCService, RPCServiceAsync & RPCServieImpl. On clicking a button a service in server side will be called and it will fetch data from DB and file is created. Once the file is created, then i need to open that file in client side and need to prompt a dialog box with open/save options. how can i implement this opening a file part. pls suggest a way to implement t.. Reply pls.. thanks in advance.... @Hambend : I still have one more clarification !.. how to call this doGet

How to inherit a required module in to GWT Project?

阅读更多关于 How to inherit a required module in to GWT Project?

问题 I want to use the GWT-FXv0.5.0MS_1.jar in my GWT Project, i added the jar file to project path and used the codes up on syntax, now am getting error that not inherited: Error message is: 11:28:48.829 [ERROR] [uibuilder] Line 80: No source code is available for type org.adamtacy.client.ui.effects.core.NMorphStyle; did you forget to inherit a required module? 回答1: You have to add inherit tag in your gwt.xml <inherits name="com.company.gwt-fx"/> 来源： https://stackoverflow.com/questions/14251782

How can I use the same @def in multiple CssResource css files?

阅读更多关于 How can I use the same @def in multiple CssResource css files?

问题 I'd like to say, in a single, centralized location, @def mainColor = #f00; and then, in all of my other css files, refer to mainColor without having to redefine it. Then when I change mainColor in once place, my entire app changes color. The best way I can think of so far is to include two @Source files for every CssResource declaration and always include the global def file. Are there any other ways? 回答1: As far as I know, this is your only option: style.css @def mainColor #f00; *.ui.xml <ui

entity with relationships through GWT RPC problem

阅读更多关于 entity with relationships through GWT RPC problem

问题 I am using JPA 2.0. (EclipseLink 2.0.2) If an entity contains relations, for example: @OneToMany(cascade = CascadeType.ALL, mappedBy = "userId") private Collection<Blog> blogCollection; I am getting the following error when I am sending it through RPC: com.google.gwt.user.client.rpc.SerializationException: Type 'org.eclipse.persistence.indirection.IndirectList' was not included in the set of types which can be serialized by this SerializationPolicy or its Class object could not be loaded. For