char[] autoActivationCharacters = new char[(126 - 32) + 1];
for (int i = 32; i <= 126; i++)
autoActivationCharacters[i - 32] = (char) i;
ContentProposalAdapter urlProposalAdapter = new ContentProposalAdapter(currentURLText, new TextContentAdapter(),
new URLContentProposalProvider(urlHistory), keyStroke, autoActivationCharacters);
// create the Browse button
browseButton = new Button(toolbarTopArea, SWT.PUSH);
browseButton.setText("Browse...");
browseButton.setLayoutData(new GridData(SWT.RIGHT, SWT.TOP, false, false));