我有一个从 GXT 2.2.5 库创建的界面,现在我需要从 TextField 获取用户输入的值并将其发送到服务器。如何从文本字段中获取此用户输入的值?这里是示例代码:
package kz.bimash.client;
import com.extjs.gxt.ui.client.widget.LayoutContainer;
import com.extjs.gxt.ui.client.widget.LayoutContainer;
import com.extjs.gxt.ui.client.widget.Slider;
import com.extjs.gxt.ui.client.widget.VerticalPanel;
import com.extjs.gxt.ui.client.widget.button.Button;
import com.extjs.gxt.ui.client.widget.layout.FlowLayout;
import com.extjs.gxt.ui.client.widget.layout.FormData;
import com.extjs.gxt.ui.client.widget.layout.FormLayout;
import com.google.gwt.i18n.client.NumberFormat;
import com.google.gwt.user.client.Element;
public class Form extends LayoutContainer {
private VerticalPanel vp;
private FormData formData;
@Override
protected void onRender(Element parent, int index) {
super.onRender(parent, index);
formData = new FormData("-20");
vp = new VerticalPanel();
vp.ensureDebugId("vps");
vp.setSpacing(10);
//createForm1();
createForm2();
add(vp);
}
private void createForm2() {
FormPanel form2 = new FormPanel();
form2.ensureDebugId("pan");
form2.setFrame(true);
form2.setHeading("Simple Form with FieldSets");
form2.setWidth(350);
form2.setLayout(new FlowLayout());
FieldSet fieldSet = new FieldSet();
fieldSet.setHeading("User Information");
fieldSet.setCheckboxToggle(true);
FormLayout layout = new FormLayout();
layout.setLabelWidth(75);
fieldSet.setLayout(layout);
TextField<String> firstName = new TextField<String>();
firstName.setFieldLabel("First Name");
firstName.ensureDebugId("firstName");
firstName.setValue("olzheke");
firstName.setAllowBlank(false);
fieldSet.add(firstName, formData);
TextField<String> lastName = new TextField<String>();
lastName.setFieldLabel("Last Name");
lastName.setValue(firstName.getItemId());
fieldSet.add(lastName, formData);
TextField<String> company = new TextField<String>();
company.setFieldLabel("Company");
fieldSet.add(company, formData);
TextField<String> email = new TextField<String>();
email.setFieldLabel("Email");
fieldSet.add(email, formData);
form2.add(fieldSet);
fieldSet = new FieldSet();
fieldSet.setHeading("Phone Numbers");
fieldSet.setCollapsible(true);
layout = new FormLayout();
layout.setLabelWidth(75);
fieldSet.setLayout(layout);
TextField<String> field = new TextField<String>();
field.setFieldLabel("Home");
fieldSet.add(field, formData);
field = new TextField<String>();
field.setFieldLabel("Business");
fieldSet.add(field, formData);
field = new TextField<String>();
field.setFieldLabel("Mobile");
fieldSet.add(field, formData);
field = new TextField<String>();
field.setFieldLabel("Fax");
fieldSet.add(field, formData);
form2.add(fieldSet);
form2.setButtonAlign(HorizontalAlignment.CENTER);
form2.addButton(new Button("Save"));
form2.addButton(new Button("Cancel"));
vp.add(form2);
}
}
这是 EntryPoint 实现的类,我将在其中发送:
package kz.bimash.client;
import com.extjs.gxt.ui.client.widget.Document;
import com.extjs.gxt.ui.client.widget.MessageBox;
import com.extjs.gxt.ui.client.widget.form.FieldSet;
import com.extjs.gxt.ui.client.widget.form.TextField;
import com.extjs.gxt.ui.client.widget.layout.FlowLayout;
import com.extjs.gxt.ui.client.widget.layout.FormData;
import com.extjs.gxt.ui.client.widget.layout.FormLayout;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.extjs.gxt.ui.client.widget.form.FormPanel;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.*;
public class GWTSample implements EntryPoint {
private UserServiceAsync prox;
private HTML label1, button1;
public void onModuleLoad() {
prox = GWT.create(UserService.class);
// Window.enableScrolling(false);
// Window.setMargin("0px");
Form form = new Form();
form.setVisible(true);
Button btn = new Button("Click me!");
// final RootPanel root=RootPanel.get();
final RootLayoutPanel root = RootLayoutPanel.get();
btn.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
prox.getMsq(new AsyncCallback<String>() {
@Override
public void onFailure(Throwable caught) {
//To change body of implemented methods use File | Settings | File Templates.
}
@Override
public void onSuccess(String result) {
// MessageBox.info("testing","this is ext gwt",null);
}
});
}
});
TextField<String> tf = (TextField<String>) form.getItemByItemId("firstName");
Label lab = new Label();
//lab.setText(tf.getValue());
// root.add(lab);
root.get().add(form);
root.get().add(btn);
//Document.get().getElementByID()
}
}
单击按钮时,我需要从 Texfield 检索值并将其发送到服务器,我如何访问这些值?