I have a SuggestionBox in GWT. Is there a way to clear it when it blurs (unless the user made a selection, in which case an action should happen)?
Add a BlurHandler:
suggestionBox.getValueBox().addBlurHandler(new BlurHandler() {
#Override
public void onBlur(BlurEvent event) {
// your code goes here
}
});
Try this one using ValueChangeHandler:
Note: ValueChange event has same behavior as Blue event but it is fired only if value is changed in SuggestBox.
class MyMultiWordSuggestOracle extends MultiWordSuggestOracle {
private Set<String> values = new HashSet<String>();
#Override
public void add(String value) {
super.add(value);
values.add(value);
}
#Override
public void clear(){
super.clear();
values.clear();
}
public boolean contains(String value) {
return values.contains(value);
}
}
You code:
final MyMultiWordSuggestOracle oracle = new MyMultiWordSuggestOracle();
oracle.add("A");
oracle.add("AB");
oracle.add("BCD");
oracle.add("BCDE");
final SuggestBox suggestionBox = new SuggestBox(oracle);
suggestionBox.addValueChangeHandler(new ValueChangeHandler<String>() {
#Override
public void onValueChange(ValueChangeEvent<String> event) {
if (!oracle.contains(event.getValue())) {
suggestionBox.setValue("");
}
}
});
I try to add button into rowExpander content:
so i have:
ButtonCell<Integer> viewButtonCell = new ButtonCell<Integer>();
and row expander
RowExpander<XX> expander = new RowExpander<XX>(identity, new AbstractCell<XX>() {
#Override
public void render(Context context, XX value, SafeHtmlBuilder sb) {
sb.appendHtmlConstant("<span>");
viewButtonCell.render(context, value.getId(), sb);
sb.appendHtmlConstant("</span>");
}
ButtonCell is rendered OK i can see it BUT I cannot click it, no selecthandler from ButtonCell is call :(.
Any ideas how can I make selectHandlerActive for this button ?
Thanks
i created some new RowExpander :
public class MTPRowExpander<M> extends RowExpander<M> {
public static int id = 0;
public static interface WidgetFactory<M> {
public Widget createWidget(M model);
}
private WidgetFactory<M> wf;
private Set<Integer> expandedRows;
public MTPRowExpander(IdentityValueProvider<M> valueProvider,WidgetFactory<M> wf) {
this(valueProvider,GWT.<RowExpanderAppearance<M>> create(RowExpanderAppearance.class),wf);
}
public MTPRowExpander(IdentityValueProvider<M> valueProvider,final RowExpanderAppearance<M> appearance, WidgetFactory<M> wf) {
super(valueProvider, null, appearance);
this.wf = wf;
expandedRows = new HashSet<Integer>();
}
#Override
protected boolean beforeExpand(M model, Element body, XElement row,int rowIndex) {
if (expandedRows.contains(rowIndex)) {
return true;
} else {
expandedRows.add(rowIndex);
return super.beforeExpand(model, body, row, rowIndex);
}
}
#Override
protected String getBodyContent(final M model, int rowIndex) {
final int curentid = id++;
Scheduler.get().scheduleFinally(new ScheduledCommand() {
#Override
public void execute() {
Widget widget = wf.createWidget(model);
com.google.gwt.dom.client.Element item = grid.getElement().childElement(".widget" + curentid);
item.appendChild(widget.getElement());
ComponentHelper.setParent(grid, widget);
}
});
return "<div class='widget" + curentid + "'></div>";
}
}
I know that this solution is not perfect but I didnt know how to resolve problem at more proper way.
I am using a CellTable<Contact> in my GWT 2.4 project. Everything worked perfectly, so I decided to add paging to the table by using a SimplePager. The CellTable now displays the correct number of entries (page size), but all the pager buttons are disabled.
I am doing the following:
...
#UiField(provided=true) CellTable<Contact> contactsTable = new CellTable<Contact>();
#UiField SimplePager pager;
private TextColumn<Contact> nameColumn;
private TextColumn<Contact> surnameColumn;
public ViewContactsViewImplDesktop() {
initWidget(uiBinder.createAndBindUi(this));
initTable();
}
#Override
public final void updateContactList(final ArrayList<Contact> contacts) {
contactsTable.setRowCount(contacts.size());
final ListDataProvider<Contact> dataProvider = new ListDataProvider<Contact>();
List<Contact> list = dataProvider.getList();
for (final Contact c : contacts) {
list.add(c);
}
dataProvider.addDataDisplay(contactsTable);
pager = new SimplePager();
pager.setDisplay(contactsTable);
pager.setPageSize(3);
ListHandler<Contact> nameColumnSorter = new ListHandler<Contact>(list);
ListHandler<Contact> surnameColumnSorter = new ListHandler<Contact>(list);
nameColumnSorter.setComparator(nameColumn, new Comparator<Contact>() {
#Override
public int compare(Contact c1, Contact c2) {
return c1.getName().compareTo(c2.getName());
}
});
surnameColumnSorter.setComparator(surnameColumn, new Comparator<Contact>() {
#Override
public int compare(Contact c1, Contact c2) {
return c1.getSurname().compareTo(c2.getSurname());
}
});
contactsTable.addColumnSortHandler(nameColumnSorter);
contactsTable.addColumnSortHandler(surnameColumnSorter);
contactsTable.getColumnSortList().push(nameColumn);
}
private void initTable() {
nameColumn = new TextColumn<Contact>() {
#Override
public String getValue(Contact contact) {
return contact.getName();
}
};
surnameColumn = new TextColumn<Contact>() {
#Override
public String getValue(Contact contact) {
return contact.getSurname();
}
};
nameColumn.setSortable(true);
surnameColumn.setSortable(true);
contactsTable.addColumn(nameColumn, "Name");
contactsTable.addColumn(surnameColumn, "Surname");
}
Thanks!
Not setting the page size and/or not setting the table's row count manually could do the trick, as hinted in my comment.
I'd love to provide a concise code sample but do not have access to any code using cell widgets right now.
I have tried this but didn't work
Column<ContactInfo, String> imageColumn = new Column<ContactInfo, String>(new ImageCell()) {
#Override
public String getValue(ContactInfo object) {
return "contact.jpg";
}
};
imageColumn.setFieldUpdater(new FieldUpdater<ContactInfo, String>() {
#Override
public void update(int index, ContactInfo object, String value) {
Window.alert("You clicked " + object.firstName);
}
});
cellTable.addColumn(imageColumn, SafeHtmlUtils.fromSafeConstant("<br/>"));
public class ButtonImageCell extends ButtonCell{
#Override
public void render(com.google.gwt.cell.client.Cell.Context context,
String value, SafeHtmlBuilder sb) {
SafeHtml html = SafeHtmlUtils.fromTrustedString(new Image(value).toString());
sb.append(html);
}
}
in use:
final Column<ReportDTOProxy, String> buttonImageCellTest = new Column<ProxyObject, String>(new ButtonImageCell()) {
#Override
public String getValue(ProxyObject row) {
//url to image
return row.getImageUrl();
}
};
You can extend ImageCell class and override 2 it's methods - getConsumedEvents and onBrowserEvent. Example:
private class MyImageCell extends ImageCell{
#Override
public Set<String> getConsumedEvents() {
Set<String> consumedEvents = new HashSet<String>();
consumedEvents.add("dblclick");
return consumedEvents;
}
#Override
public void onBrowserEvent(Context context, Element parent,
String value, NativeEvent event,
ValueUpdater<String> valueUpdater) {
switch (DOM.eventGetType((Event)event)) {
case Event.ONDBLCLICK:
// TODO
break;
default:
break;
}
}
}
I did something similar mixing a Button cell with the renderer from an ImageCell....
ButtonCell bc = new ButtonCell() {
#Override
public void render(Context context, SafeHtml data, SafeHtmlBuilder sb) {
if (data != null) {
ImageResource icon = Icons.BUNDLE.pieChart();
SafeHtml html = SafeHtmlUtils.fromTrustedString(AbstractImagePrototype.create(icon).getHTML());
sb.append(html);
}
}
};
You get the idea. The only problem is that it does not display the "hand" icon when you hover over it.... likely it can be fixed by setting the CSS.
You can try this rather than using ButtonCell or ImageCell. This will work for sure. As I have implemented for my requirement. Let me know how does it goes..
ClickableTextCell imageCell = new ClickableTextCell() {
#Override
public void render(Context context, SafeHtml data, SafeHtmlBuilder sb) {
if (data != null) {
String imagePath = "icon.png";
sb.append(imagePath);
}
}
};
Column<ContactInfo, String> imageColumn = new Column<ContactInfo, String>(imageCell) {
#Override
public String getValue(ContactInfo object) {
return "";
}
};
imageColumn.setFieldUpdater(new FieldUpdater<ContactInfo, String>() {
#Override
public void update(int index, ContactInfo object, String value) {
Window.alert("You clicked " + object.firstName);
}
});
cellTable.addColumn(imageColumn, SafeHtmlUtils.fromSafeConstant("<br/>"));
A good solution for this issue, if you use ActionCell that is able to handle clicking. The use of it is a bit complicatied, but for me it worked pretty well.
First you need to initialize ActionCell with a delegate, in the constructor, write new ActionCell.Delegate<your class>. In this override the method execute and in that write your code that handle the clicking event.
The other thing you need to do is building up a html from the image. The SafeHtmlUtils class gives you a very easy way to do that. It's fromTrustedString method helps you building up the html:
SafeHtmlUtils.fromTrustedString(AbstractImagePrototype.create ("Your image from a resource class").getHTML());
This way the SafeHtml field can be initalized and if you give the ActionCell's contructor the SafeHtml and the Delegate, that it will do the work for you.
In this example a button will be initialized with the image from the bundle file in it. You can make it without the button if you override the render method of the ActionCell and append the SafeHtmlBuilder in the method with the same SafeHtml variable as above.
My code looks like the following:
IdentityColumn<Type> imageCell = new IdentityColumn<Type>(new ActionCell<Type>("AnyString",
new ActionCell.Delegate<Type>() {
#Override
public void execute(final Type item) {
"your code"
}
}) {
#Override
public void render(Context context, Type value, SafeHtmlBuilder sb) {
if (value != null) {
SafeHtml html = SafeHtmlUtils.fromTrustedString(AbstractImagePrototype.create(resource.image).getHTML());
sb.append(html);
}
}
});
You'd rather override the method in an another class but I didn't want to split them for this post. It worked for me very well, I hope it will help other's too.
I got all the above and added them in my app. Thanks to all. stackoverflow rocks!
ButtonCell bc = new ButtonCell() {
#Override
public void render(Context context, SafeHtml data, SafeHtmlBuilder sb) {
if (data != null) {
ImageResource icon = Connector.imageResources.minus();
Image image = new Image(icon);
//fix the mouse pointer
image.getElement().getStyle().setCursor(Cursor.POINTER);
//Do something with the DATA
image.setTitle("Delete " + data.asString());
SafeHtml html = SafeHtmlUtils.fromTrustedString(image.toString());
sb.append(html);
}
}
};
Column<InstanceProperty, String> imageColumn = new Column<InstanceProperty, String>(bc) {
#Override
public String getValue(InstanceProperty object) {
//return the DATA
return object.getKey();
}
};
imageColumn.setFieldUpdater(new FieldUpdater<InstanceProperty, String>() {
#Override
public void update(int index, InstanceProperty property,
String value) {
//you can also use the DATA to do something
InstancePropertiesTable.this.dataProvider.getList().remove(index);
}
});
addColumn(imageColumn, "");
This worked for me:
public class ButtonImageCell extends ButtonCell{
#Override
public void render(com.google.gwt.cell.client.Cell.Context context,
String renderedHtmlStr, SafeHtmlBuilder sb) {
sb.appendHtmlConstant(renderedHtmlStr);
}
}
In a class containing CellTable table:
TableResources resources = GWT.create(TableResources.class);
ImageResourceRenderer imageRenderer = new ImageResourceRenderer();
...
Column<MyRecord, String> buttonCol = new Column<MyRecord, String>(new ButtonImageCell()) {
#Override
public String getValue(MyRecord record) {
if(record.isOn())
return imageRenderer.render(resources.getOnImg()).asString();
else
return imageRenderer.render(resources.getOffImg()).asString();
}
};
buttonCol.setFieldUpdater(new FieldUpdater<MyRecord, String>() {
public void update(int index, MyRecordobject, String value) {
if (Window.confirm("Do stuff?")) {
//todo: stuff
}
}
});
...
table.addColumn(buttonCol, "");
Where the ImageResource comes from (resources):
public interface TableResources extends CellTable.Resources {
interface TableStyle extends CellTable.Style {
}
#Source("/images/on.png")
ImageResource getOnImg();
#Source("/images/off.png")
ImageResource getOffImg();
}
You need to sinkEvents() with appropriate bits.
Refer to answer of Question Adding ClickHandler to div which contains many other widget.
I have a custom Oracle with Objects to pass to the SuggestBox. Then I need get back a object when it's selected from de SuggestBox.
public HandlerRegistration addSelectionHandler(SelectionHandler<SuggestOracle.Suggestion> handler)
The problem is that I don't have Suggestion. I have "CustomSuggestion". I read de API and I try to write a Custom SuggestBox implementing the interface HasSelectionHandlers but I can't because the SuggestBox have a implementation of the interface. I get the error:
The interface HasSelectionHandlers cannot be implemented more than once with different arguments: HasSelectionHandlers<SuggestOracle.Suggestion> and HasSelectionHandlers<CustomSuggestion>
Can you help me? Sorry for my bad english.
Not sure I understand your problem. Have a look at the following example (really basic but you should get an idea on how to deal with custom suggestions). Hope that helps:
public void onModuleLoad() {
SuggestBox box = new SuggestBox(new CustomOracle<CustomSuggestion>());
box.addSelectionHandler(new SelectionHandler<SuggestOracle.Suggestion>() {
#Override
public void onSelection(SelectionEvent<Suggestion> event) {
String value = ((CustomSuggestion) event.getSelectedItem()).fSomeOtherValue;
Window.alert(value);
}
});
RootPanel.get().add(box);
}
private class CustomOracle<CustomSuggestion> extends SuggestOracle {
private LinkedList<Starter.CustomSuggestion> fStore;
public CustomOracle() {
fStore = new LinkedList<Starter.CustomSuggestion>();
fStore.add(new Starter.CustomSuggestion("2", "two", "foo"));
fStore.add(new Starter.CustomSuggestion("22", "twenty-two", "bar"));
fStore.add(new Starter.CustomSuggestion("222", "two-hundred twenty-two", "w000t"));
}
#Override
public void requestSuggestions(Request request, Callback callback) {
String query = request.getQuery();
LinkedList<Starter.CustomSuggestion> result = new LinkedList<Starter.CustomSuggestion>();
for (Starter.CustomSuggestion entry : fStore) {
if (entry.fDisplay.contains(query)) {
result.add(entry);
}
}
callback.onSuggestionsReady(request, new Response(result));
}
}
private class CustomSuggestion implements Suggestion {
private String fReplace;
private String fDisplay;
private String fSomeOtherValue;
public CustomSuggestion(String display, String replace, String someOtherValue) {
fDisplay = display;
fReplace = replace;
fSomeOtherValue = someOtherValue;
}
#Override
public String getDisplayString() {
return fDisplay;
}
#Override
public String getReplacementString() {
return fReplace;
}
}