[英]gwtupload missing implement
I'm using the gwtupload library to change the standard upload Form. 我正在使用gwtupload库更改标准的上传表单。 Basically I just want to create a widget with an image and change it on :hover and :active via css.
基本上,我只想创建一个带有图像的小部件,然后通过CSS在:hover和:active上对其进行更改。
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());
}
The projects builds but doesn't run I'm getting the error message: 项目生成,但没有运行,我收到错误消息:
java.lang.AssertionError: Button should implement HasClickHandlers
But I'm having a click handler and it's basically the same as on the library example code page . 但是我有一个单击处理程序,它与库示例代码页面上的基本相同。 I don't get it is my implementation wrong or do I miss something.
我不明白这是我的实现错误还是我错过了什么。 Thx for any help.
感谢任何帮助。
您正在将未实现HasClickHandlers的DecoratorPanel方法传递给FileInputType.CUSTOM.with
方法。
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