我们遇到了一些问题。我们在 GWT 中开发的 Web 应用程序的布局具有“选项卡布局面板”功能。现在,水平幻灯片动画在除 Chrome(版本 > 22)之外的所有浏览器中都非常有效。
当用户单击应该触发幻灯片动画的选项卡之一时,它只是开始以某种循环从左到右滚动,而不会自行停止,直到 GWT Chrome 插件崩溃(这并不总是发生)。
我们在多台计算机、不同的操作系统、浏览器和平台上进行了尝试,但结果始终相同。Chrome 似乎不喜欢 GWT 选项卡布局面板动画。
这是为这个问题创建的示例网络应用程序。它仍然有这个 akward loop-ish 左右幻灯片。
public class MyWebApp implements EntryPoint {
// A simple data type that represents a contact.
private static class Contact {
private final String address;
private final String name;
public Contact(String name, String address) {
this.name = name;
this.address = address;
}
}
// The list of data to display.
private static List<Contact> CONTACTS = Arrays.asList(new Contact("John",
"123 Fourth Road"), new Contact("Mary", "222 Lancer Lane"), new Contact(
"Zander", "94 Road Street"));
public void onModuleLoad() {
// Create a CellTable.
CellTable<Contact> table = new CellTable<Contact>();
// Create name column.
TextColumn<Contact> nameColumn = new TextColumn<Contact>() {
@Override
public String getValue(Contact contact) {
return contact.name;
}
};
// Make the name column sortable.
nameColumn.setSortable(true);
// Create address column.
TextColumn<Contact> addressColumn = new TextColumn<Contact>() {
@Override
public String getValue(Contact contact) {
return contact.address;
}
};
// Add the columns.
table.addColumn(nameColumn, "Name");
table.addColumn(addressColumn, "Address");
// Create a data provider.
ListDataProvider<Contact> dataProvider = new ListDataProvider<Contact>();
// Connect the table to the data provider.
dataProvider.addDataDisplay(table);
// Add the data to the data provider, which automatically pushes it to the
// widget.
List<Contact> list = dataProvider.getList();
for (Contact contact : CONTACTS) {
list.add(contact);
}
// Add a ColumnSortEvent.ListHandler to connect sorting to the
// java.util.List.
ListHandler<Contact> columnSortHandler = new ListHandler<Contact>(list);
columnSortHandler.setComparator(nameColumn, new Comparator<Contact>() {
public int compare(Contact o1, Contact o2) {
if (o1 == o2) {
return 0;
}
// Compare the name columns.
if (o1 != null) {
return (o2 != null) ? o1.name.compareTo(o2.name) : 1;
}
return -1;
}
});
table.addColumnSortHandler(columnSortHandler);
// We know that the data is sorted alphabetically by default.
table.getColumnSortList().push(nameColumn);
// Create a tab panel
TabLayoutPanel tabPanel = new TabLayoutPanel(2.5, Unit.EM);
tabPanel.setAnimationDuration(1000);
tabPanel.getElement().getStyle().setMarginBottom(10.0, Unit.PX);
tabPanel.getElement().getStyle().setHeight(1000, Unit.PX);
tabPanel.getElement().getStyle().setWidth(720, Unit.PX);
tabPanel.getElement().getStyle().setLeft(14, Unit.PX);
// Add a home tab
String[] tabTitles = {"Prova1", "Prova2", "Prova3"};
HTML homeText = new HTML("<h1>Prova1</h1>");
tabPanel.add(homeText, tabTitles[0]);
FlexTable ft = new FlexTable();
ft.setText(0, 0, "upper-left corner");
ft.setText(2, 2, "bottom-right corner");
VerticalPanel p = new VerticalPanel();
p.add(ft);
// Add a tab
HTML moreInfo = new HTML("<h1>Prova2</h1>");
tabPanel.add(p, tabTitles[2]);
// Add it to the root panel.
RootPanel.get().add(table);
RootPanel.get().add(tabPanel);
}
}