Is there a way to give the user a prompt window popup when clicking the remove field button?
enabling the remove button :
setCanRemoveRecords(true);
When I click the red remove button, I want a confirmation box ask me if I want to delete it, yes or no. What should I use to bring that up?
Should I be adding something into
#Override
public void removeData(Record group)
{
...
}
Here are the options:
Use addCellClickHandler on ListGrid and perform operation based on cell no
Add addRecordClickHandler on ListGridField itself that is used for delete icon
I prefer last option.
Sample code:
final ListGrid countryGrid = new ListGrid();
...
countryGrid.setWarnOnRemoval(true);
countryGrid.setCanRemoveRecords(true);
ListGridField ls = new ListGridField();
countryGrid.setRemoveFieldProperties(ls);
ls.setHoverCustomizer(new HoverCustomizer() {
#Override
public String hoverHTML(Object value, ListGridRecord record, int rowNum, int colNum) {
// System.out.println(colNum);
return "click here to delete this record";
}
});
ls.addRecordClickHandler(new RecordClickHandler() {
#Override
public void onRecordClick(final RecordClickEvent event) {
SC.confirm("Are you sure?", new BooleanCallback() {
#Override
public void execute(Boolean value) {
if (value == null || !value) {
event.cancel();
}
}
});
}
});
/*countryGrid.addCellClickHandler(new CellClickHandler() {
#Override
public void onCellClick(final CellClickEvent event) {
// column number having delete icon
// System.out.println(event.getColNum());
if (event.getColNum() == 3) {
SC.confirm("Are you sure", new BooleanCallback() {
#Override
public void execute(Boolean value) {
if (value == null || !value) {
event.cancel();
}
}
});
}
}
});*/
You can use the following methods:
ListGrid#setWarnOnRemoval for showing the warning message and
ListGrid#setWarnOnRemovalMessage for setting a customized message.
Refer documentation.
Related
I've an combo box which is composed of a text field and a popup with a CellTable showing the suggestion items. The text field has a change handler that updates the CellTable's selection.
When typing a character and clicking an already selected suggestion, the first click is swallowed. The second click works and triggers the selection via the CellTable.addDomHandler(...).
Any idea why first click is swallowed?
Example code:
private static class SuggestFieldTextAndPopupSandbox extends SimplePanel {
private final TextField mText;
private CellTable<Handle<String>> mTable;
private SingleSelectionModel<Handle<String>> mTableSelection;
private SingleSelectionModel<Handle<String>> mSelection;
private ProvidesKey<Handle<String>> mKeyProvider = new SimpleKeyProvider<Handle<String>>();
private PopupPanel mPopup;
private List<Handle<String>> mData;
public SuggestFieldTextAndPopupSandbox() {
mData = Lists.newArrayList(new Handle<String>("AAA"), new Handle<String>("AAB"), new Handle<String>("ABB"));
mSelection = new SingleSelectionModel<Handle<String>>();
mText = new TextField();
mText.addKeyPressHandler(new KeyPressHandler() {
#Override
public void onKeyPress(KeyPressEvent pEvent) {
mPopup.showRelativeTo(mText);
}
});
mText.addBlurHandler(new BlurHandler() {
#Override
public void onBlur(BlurEvent pEvent) {
mTableSelection.setSelected(startsWith(mText.getValue()), true);
}
});
mText.addChangeHandler(new ChangeHandler() {
#Override
public void onChange(ChangeEvent pEvent) {
mText.setText(mText.getText().toUpperCase());
}
});
mTable = new CellTable<Handle<String>>(0, GWT.<TableResources>create(TableResources.class));
mTable.setTableLayoutFixed(false);
mTableSelection = new SingleSelectionModel<Handle<String>>(mKeyProvider);
mTable.setSelectionModel(mTableSelection);
mTable.addDomHandler(new ClickHandler() {
#Override
public void onClick(final ClickEvent pEvent) {
Scheduler.get().scheduleFinally(new ScheduledCommand() {
#Override
public void execute() {
mSelection.setSelected(mTableSelection.getSelectedObject(), true);
mText.setFocus(true);
mPopup.hide();
}
});
}
}, ClickEvent.getType());
mTable.addColumn(new TextColumn<Handle<String>>() {
#Override
public String getValue(Handle<String> pObject) {
return pObject.get();
}
});
mTable.setRowData(mData);
mPopup = new PopupPanel();
mPopup.setAutoHideEnabled(true);
mPopup.setWidget(mTable);
mPopup.setWidth("200px");
mPopup.setHeight("200px");
VerticalPanel p = new VerticalPanel();
p.add(mText);
setWidget(p);
}
private Handle<String> startsWith(final String pValue) {
final String val = nullToEmpty(pValue).toLowerCase();
int i = 0;
for (Handle<String> item : mData) {
String value = item.get();
if (value != null && value.toLowerCase().startsWith(val)) {
return item;
}
i++;
}
return null;
}
}
I reproduced your issue and here is the problem:
when you click on the suggestions the following is happening:
The text field is loosing focus which causes the corresponding ChangeEvent to be dealt with followed by the BlurEvent.
The click causes the popup to get the focus now which is why it is swallowed.
If you remove the ChangeHandler and the BlurHandler of the text field the issue disappears. But I think I found another solution
Try replacing the DOM handler of the mTable with a selection handler relative to the mTableSelection as follows:
mTableSelection.addSelectionChangeHandler(new Handler(){
#Override
public void onSelectionChange(SelectionChangeEvent event) {
Scheduler.get().scheduleFinally(new ScheduledCommand() {
#Override
public void execute() {
mSelection.setSelected(mTableSelection.getSelectedObject(), true);
mText.setFocus(true);
mPopup.hide();
}
});
}
});
Found a way how to properly solve this.
Skipping the blur handler when user hovers the suggestion list area seemed to fix that issue, at least from the tests that were done didn't see any more issues.
This was necessary because just before the user clicks a suggestion item, the text is blurred and it fires a selection change. This in turn cancels the selection made when user clicks an item.
I am currently looking for content assist feature in Nattable TextCellEditor.I have found the way to attach the ContentProposalAdapter and IContentProposalProvider by extending the Nattable TextCellEditor. but ,The selected value from the proposed list is not updating in the text control.
Snippet :
#Override
protected Text createEditorControl(final Composite parent, final int Style) {
this.textControl = super.createEditorControl(parent, style);
contentProposalAdapter =
new ContentProposalAdapter(this.textControl, new TextContentAdapter(), contentProposalProvider, keyStroke,
null);
contentProposalAdapter.addContentProposalListener(new IContentProposalListener() {
#Override
public void proposalAccepted(IContentProposal proposal) {
System.out.println(proposal.getContent());
}
});
}
The problem you have is the internal FocusListener that is triggered while selecting a value in the popup. To add the support you also need to override the internal FocusListener with a listener that doesn't fire if the content proposal popup is open.
An example would be to add a boolean flag that indicates that the popup is open and add a listener that sets the flag accordingly.
private boolean popupOpen = false;
...
contentProposalAdapter.addContentProposalListener(new IContentProposalListener2() {
#Override
public void proposalPopupClosed(ContentProposalAdapter adapter) {
this.popupOpen = false;
}
#Override
public void proposalPopupOpened(ContentProposalAdapter adapter) {
this.popupOpen = true;
}
});
And then implement and set a FocusListener in the constructor that takes care of that flag.
this.focusListener = new FocusAdapter() {
#Override
public void focusLost(FocusEvent e) {
if (!TextCellEditor.this.popupOpen) {
if (!commit(MoveDirectionEnum.NONE, true)) {
if (e.widget instanceof Control && !e.widget.isDisposed()) {
((Control) e.widget).forceFocus();
}
} else {
if (!TextCellEditor.this.parent.isDisposed())
TextCellEditor.this.parent.forceFocus();
}
}
}
};
In case the value should be immediately committed after it is selected, you need to add a listener that performs the commit after selection.
contentProposalAdapter.addContentProposalListener(new IContentProposalListener() {
#Override
public void proposalAccepted(IContentProposal proposal) {
commit(MoveDirectionEnum.NONE);
}
});
Unfortunately the AbstractCellEditor#InlineFocusListener is private and can therefore not be extended.
Feel free to file an enhancement ticket for NatTable to introduce the ability to easily add content proposals to a text cell editor.
https://bugs.eclipse.org/bugs/enter_bug.cgi?product=NatTable
In GWT 2.6 CellTable, I'm writing a single click event to perform some operation. I can not get the correct Row Index while clicking on the CellTable Row; only a double click event returns the row correctly.
final SingleSelectionModel<PatientDTO> selectionModel =
new SingleSelectionModel<PatientDTO>();
patientsTable.setSelectionModel(selectionModel);
patientsTable.addDomHandler(new ClickHandler()
{
#Override
public void onClick(ClickEvent event)
{
PatientDTO selected = selectionModel.getSelectedObject();
if (selected != null)
{
RootLayoutPanel.get().clear();
RootLayoutPanel.get().add(new PatientPanel(selected));
}
}
}, ClickEvent.getType());
Either use SingleSelectionModel or MultiSelectionModel and add SelectionChangeHandler on it that will be fired when selection is changed in the CellTable
Sample code:
final SingleSelectionModel<Contact> selectionModel = new SingleSelectionModel<Contact>();
//final MultiSelectionModel<Contact> selectionModel = new MultiSelectionModel<Contact>();
selectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
#Override
public void onSelectionChange(SelectionChangeEvent event) {
Set<Contact> selected = selectionModel.getSelectedSet();
if (selected != null) {
for (Contact contact : selected) {
System.out.println("You selected: " + contact.name);
}
}
}
});
OR alternatively try with CellPreviewHandler
table.addCellPreviewHandler(new Handler<Contact>() {
#Override
public void onCellPreview(CellPreviewEvent<Contact> event) {
int row = event.getIndex();
int column = event.getColumn();
if ("focus".equals(event.getNativeEvent().getType())) {
//..
}
if ("blur".equals(event.getNativeEvent().getType())) {
//...
}
if ("mousedown".equals(event.getNativeEvent().getType())) {
//..
}
if ("mouseover".equals(event.getNativeEvent().getType())) {
//..
}
}
});
So I have implemented a very simple drag and drop file upload widget. Basically my widget is a vertical panel with a couple of labels and a button inside. The user can either drag file into vertical panel or click button and browse for file.
My problem is that when I drag a file into the vertical panel it fires the DragLeaveEvent every time I drag the item over the space that the labels or button occupies. I want it to know that the item is in the vertical panel even when it is on top of the label or button. Im sure I am missing something simple. I provide the drag functionality by adding these dom handlers to the vertical panel:
addDomHandler(new DragEnterHandler() {
#Override
public void onDragEnter(DragEnterEvent event) {
System.out.println("drag enter");
highlight(true);
}
}, DragEnterEvent.getType());
addDomHandler(new DragLeaveHandler() {
#Override
public void onDragLeave(DragLeaveEvent event) {
System.out.println("drag leave");
highlight(false);
}
}, DragLeaveEvent.getType());
addDomHandler(new DragOverHandler() {
#Override
public void onDragOver(DragOverEvent event) {
}
}, DragOverEvent.getType());
addDomHandler(new DropHandler() {
#Override
public void onDrop(DropEvent event) {
System.out.println("drop");
// stop default behaviour
event.preventDefault();
event.stopPropagation();
// starts the fetching, reading and callbacks
if (fileUploadHandler != null) {
handleFiles(event.getDataTransfer(), fileUploadHandler);
}
highlight(false);
}
}, DropEvent.getType());
Check that the event target is a child (or grand child) of your panel, or in this case maybe rather whether the event target is exactly your panel's element:
if (verticalPanel.getElement().isOrHasChild(Node.as(event.getNativeEvent().getEventTarget()))) {
// within the panel (possibly on a child)
}
if (verticalPanel.getElement() == Node.as(event.getNativeEvent().getEventTarget())) {
// targetting exactly the panel (e.g. leaving the panel, not one of its children)
}
Through lots of research I have come to the only solution I could find. I set highlight to true in the dragover handler instead of drag enter.
panel.addDomHandler(new DragEnterHandler() {
#Override
public void onDragEnter(DragEnterEvent event) {
}
}, DragEnterEvent.getType());
panel.addDomHandler(new DragLeaveHandler() {
#Override
public void onDragLeave(DragLeaveEvent event) {
highlight(false);
}
}, DragLeaveEvent.getType());
panel.addDomHandler(new DragOverHandler() {
#Override
public void onDragOver(DragOverEvent event) {
highlight(true);
}
}, DragOverEvent.getType());
panel.addDomHandler(new DropHandler() {
#Override
public void onDrop(DropEvent event) {
// stop default behaviour
event.preventDefault();
event.stopPropagation();
// starts the fetching, reading and callbacks
handleFiles(event.getDataTransfer());
highlight(false);
}
}, DropEvent.getType());
I copy pasted your code, but also added a:
RootPanel.get().addHandler(dropHandler, DropEvent.getType());
My drophandler looks like this:
DropHandler dropHandler = new DropHandler() {
#Override
public void onDrop(DropEvent event) {
handleFiles(event.getDataTransfer(), new FileUploadHandler() {
#Override
public TYPE specifyFileType() {
return TYPE.BINARY;
}
#Override
public void handleFileContent(String fileName, String fileContent) {
// do stuff with filename and content
}
#Override
public boolean checkFileName(String fileName) {
return true;
}
});
event.preventDefault();
event.stopPropagation();
}
};
and the file-upload interface:
public interface FileUploadHandler {
static public enum TYPE {
TEXT, BINARY, DATAURL
};
// check the filename and extension and return true if you are happy with
// proceeding
// returnning false will prevent the file from being read
boolean checkFileName(String fileName);
// tell the method to use to read this file
TYPE specifyFileType();
// do your stuff here, eg upload to a server
void handleFileContent(String fileName, String fileContent);
}
and the handle files func: (note you will have to change classpath to the FileUploadHandler-interface)
// native method to make use of the HTML5 file API functionality
private final native void handleFiles(JavaScriptObject dataTransfer, FileUploadHandler fileUploadHandler) /*-{
var files = dataTransfer.files;
var i;
var file;
var reader = new FileReader();
for (i = 0; i < files.length; i++) {
file = files[i];
if (fileUploadHandler.#<classpath_to>.FileUploadHandler::checkFileName(Ljava/lang/String;)(file.name)) {
var type = fileUploadHandler.#<classpath_to>.FileUploadHandler::specifyFileType()();
reader.onload = function(e) {
fileUploadHandler.#<classpath_to>.FileUploadHandler::handleFileContent(Ljava/lang/String;Ljava/lang/String;)(file.name, e.target.result);
}
if (type == "TEXT") {
reader.readAsText(file);
} else if (type == "BINARY") {
reader.readAsBinaryString(file);
} else if (type == "DATAURL") {
reader.readAsDataURL(file);
// not supported
} else if (type == "ARRAYBUFFER") {
reader.readAsArrayBuffer(file);
} else {
}
}
}
}-*/;
I want to disable the anchor link event when it clicked one time. I used anchor.setenabled(false) but nothing happend. When I click the same button again the event e is true. I want false at that time.
public void onCellClick(GridPanel grid, int rowIndex, int colindex,EventObject e)
{
if(rowIndex==0 && colindex==2){
tomcatHandler = "Start";
anchorStart.setEnabled(false);
}else if(rowIndex==0 && colindex==3){
tomcatHandler = "Stop";
****anchorStop.setEnabled(false);
anchorStart.setEnabled(false);
anchorRestart.setEnabled(true);****
}else if(rowIndex==0 &&colindex==4){
tomcatHandler = "Restart";
anchorRestart.setEnabled(false);
}
AdminService.Util.getInstance().tomcat(tomcatHandler,new AsyncCallback<String>() {
#Override
public void onSuccess(String result) {
imageChangeEvent(result);
}
#Override
public void onFailure(Throwable caught) {
}
});}
Anchors in GWT have always had a problem with setEnabled() because HTML doesn't support such a property. A quick workaround is to create a new widget that subclasses GWT's Anchor, adding the following override:
#Override
public void onBrowserEvent(Event event) {
switch (DOM.eventGetType(event)) {
case Event.ONDBLCLICK:
case Event.ONFOCUS:
case Event.ONCLICK:
if (!isEnabled()) {
return;
}
break;
}
super.onBrowserEvent(event);
}
This disables the passing of the browser event to GWT's Anchor class (summarily disabling all related handlers) when the link is double clicked, focused or clicked and is in a disabled state.
Source
It doesn't seem to actually disable the anchor, but it does retain the status that has been set with anchor.setEnabled(), so just test that within your handler e.g.
myAnchor.addClickHandler(new ClickHandler() {
#Override
public void onClick(ClickEvent evt) {
// write to filter and then call reload
if (((Anchor) evt.getSource()).isEnabled()) {
//do stuff
}
}
});