对于一个非常简单的元素
public static class ToolHtml extends Anchor {
private Long toolId;
public ToolHtml(ToolDetails toolDetails) {
this.toolId = toolDetails.getToolId();
this.setText(toolDetails.getName());
Style style = this.getElement().getStyle();
style.setColor("orange");
this.getElement().setId(DOM.createUniqueId());
}
public Long getToolId() {
return this.toolId;
}
}
我正在尝试添加一些事件处理程序。我对DragStartEvent
感兴趣,但即使ClickEvent
似乎也无效,我根本无法找出原因:
public void addOfferItem(ToolHtml toolHtml) {
Set<ToolHtml> toolHtmlSet = this.toolIdToToolHtml.get(toolHtml.getToolId());
if (toolHtmlSet == null) {
toolHtmlSet = new HashSet<>();
this.toolIdToToolHtml.put(toolHtml.getToolId(), toolHtmlSet);
}
toolHtml.getElement().setAttribute("contenteditable", "false");
toolHtml.getElement().setAttribute("draggable", "true");
toolHtml.addBitlessDomHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
LOGGER.fine("Click");
LOGGER.fine("Click");
LOGGER.fine("Click");
}
}, ClickEvent.getType());
toolHtml.addDomHandler((DragStartEvent event) -> {
LOGGER.fine("HANDLER DRAG START");
},
DragStartEvent.getType());
toolHtml.addDomHandler((DragStartEvent event) -> {
LOGGER.fine("DOM DRAG START");
},
DragStartEvent.getType());
toolHtml.addBitlessDomHandler((DragStartEvent event) -> {
LOGGER.fine("DRAG START");
},
DragStartEvent.getType());
toolHtmlSet.add(toolHtml);
// Attach/append to DOM
this.getElement().appendChild(toolHtml.getElement());
}
有人知道这里的问题是什么吗?
答案 0 :(得分:1)
您附加了一个元素,而不是附加了处理程序的Widget。您需要向窗口小部件添加窗口小部件才能使用所有功能。
注意:您需要使用
而不是toolHtml.addClickHandler
{{1}}