I have a gwt application that calls a gwt servlet (from my presenter class)
to write a PDF file to disk, then in my presenter class I display the newly
created PDF using Window.open("my.pdf");. The problem is that the
window.open executes before the pdf is finished writing to disk. I would
like to know if there is a way to stall any further statements from
occurring until the pdf is finished writing. Or is there a way to use some
sort of timer object that waits 5 seconds or more while the PDF is being
created? It would be nice to prompt the user a message box that says
"please wait while PDF is retrieved" and then when the PDF is finished
writing, we could automatically close the message box and execute the
window.open("my.pdf") command. Here is the lines of code in the presenter
class:
ButtonCell genericButtonCellType = new ButtonCell();
FieldUpdater<EOMDocument, String> previewUpdater = new
FieldUpdater<EOMDocument, String>()
{
@Override
public void update(int index, EOMDocument object, String value)
{
if (object.getByteBlob() == null) {
Window.alert("Sorry but the PDF you are requesting from the database is
empty. Please select another PDF to view!");
} else {
eventBus.writePdf(object.getByteBlob(), object.getIdocNumber());
String blobURL = GWT.getHostPageBaseURL() + "sp_pdf/" +
object.getPreviewBlobPath();
Window.open(blobURL, "Search And Preview - PDF Review", null);
}
}
};
Thanks for the help.
Joshua
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