Java gwtupload缺少工具
我正在使用gwtupload库来更改标准上传表单。基本上,我只想创建一个带有图像的小部件,并通过css将其更改为:hover和:activeJava gwtupload缺少工具,java,gwt,gwtupload,Java,Gwt,Gwtupload,我正在使用gwtupload库来更改标准上传表单。基本上,我只想创建一个带有图像的小部件,并通过css将其更改为:hover和:active public class FileUploadFormImpl extends FileUploadForm implements HasClickHandler { private SingleUploader fileUpload; public FileUploadFormImplCostum(String actionUrl) {
public class FileUploadFormImpl extends FileUploadForm implements HasClickHandler {
private SingleUploader fileUpload;
public FileUploadFormImplCostum(String actionUrl) {
setAction(actionUrl);
// Create Panel with costum Button
DecoratorPanel widget = new DecoratorPanel();
widget.setSize("100%", "100%");
widget.setStyleName("costum-Button");
// Create a FileUpload widget.
fileUpload = new SingleUploader(FileInputType.CUSTOM.with(widget));
fileUpload.setStyleName("costum-Button");
fileUpload.setWidth("100%");
fileUpload.getWidget().setSize("100%", "100%);");
add(fileUpload);
}
@Override
public HandlerRegistration addClickHandler(ClickHandler handler) {
return addDomHandler(handler, ClickEvent.getType());
}
项目已生成但未运行我收到错误消息:
java.lang.AssertionError: Button should implement HasClickHandlers
但是我有一个点击处理程序,它基本上和库上的一样。我不明白这是我的实现错误还是我遗漏了什么。谢谢您的帮助。您正在传递到
文件输入类型.CUSTOM。使用方法,不实现HasClickHandlers的装饰面板。嗯..是的。修好了。我以为我的小部件只是我的css背景图像,而不是图像+发送按钮。我想脱掉这个扣子。顺便说一句,你救了我一天:)修好了。关于: