/** Update enabling and labels according to the current status of the operation history. */
public void update() {
if (isInvalid()) {
return;
}
boolean enabled = shouldBeEnabled();
String text, tooltipText;
if (enabled) {
tooltipText = NLS.bind(getTooltipString(), getOperation().getLabel());
text =
NLS.bind(
getCommandString(),
LegacyActionTools.escapeMnemonics(shortenText(getOperation().getLabel())))
+ '@';
} else {
tooltipText =
NLS.bind(WorkbenchMessages.Operations_undoRedoCommandDisabled, getSimpleTooltipString());
text = getSimpleCommandString();
/*
* if there is nothing to do and we are pruning the history, flush
* the history of this context.
*/
if (undoContext != null && pruning) {
flush();
}
}
setText(text);
setToolTipText(tooltipText);
setEnabled(enabled);
}
@Override
public void updateLabel() {
ISearchResultPage page = getActivePage();
String label = ""; // $NON-NLS-1$
if (page != null) {
label = LegacyActionTools.escapeMnemonics(page.getLabel());
}
if (!fPageContent.isDisposed()) {
if (label.length() == 0) {
if (fDescriptionComposite != null) {
fDescriptionComposite.dispose();
fDescriptionComposite = null;
fPageContent.layout();
}
} else {
if (fDescriptionComposite == null) {
fDescriptionComposite = new Composite(fPageContent, SWT.NONE);
fDescriptionComposite.moveAbove(null);
GridLayout layout = new GridLayout();
layout.marginHeight = 0;
layout.marginWidth = 0;
layout.verticalSpacing = 0;
fDescriptionComposite.setLayout(layout);
fDescriptionComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
fDescription = new Link(fDescriptionComposite, SWT.NONE);
GridData gridData = new GridData(SWT.FILL, SWT.CENTER, true, false);
gridData.horizontalIndent = 5;
fDescription.setLayoutData(gridData);
fDescription.setText(label);
Label separator = new Label(fDescriptionComposite, SWT.SEPARATOR | SWT.HORIZONTAL);
separator.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
fPageContent.layout();
} else {
fDescription.setText(label);
}
}
}
}
/**
* Escapes '&' with '&' in the given text.
*
* @param text the text to escape, can be <code>null</code>
* @return the escaped string or <code>null</code> if text was <code>null</code>
* @since 3.4
*/
private String escape(String text) {
if (text == null) return text;
return LegacyActionTools.escapeMnemonics(text);
}
/**
* Informs the user about the fact that there are no enabled categories in the default content
* assist set and shows a link to the preferences.
*
* @return <code>true</code> if the default should be restored
* @since 3.3
*/
private boolean informUserAboutEmptyDefaultCategory() {
if (OptionalMessageDialog.isDialogEnabled(PREF_WARN_ABOUT_EMPTY_ASSIST_CATEGORY)) {
final Shell shell = JavaPlugin.getActiveWorkbenchShell();
String title = JavaTextMessages.ContentAssistProcessor_all_disabled_title;
String message = JavaTextMessages.ContentAssistProcessor_all_disabled_message;
// see PreferencePage#createControl for the 'defaults' label
final String restoreButtonLabel = JFaceResources.getString("defaults"); // $NON-NLS-1$
final String linkMessage =
Messages.format(
JavaTextMessages.ContentAssistProcessor_all_disabled_preference_link,
LegacyActionTools.removeMnemonics(restoreButtonLabel));
final int restoreId = IDialogConstants.CLIENT_ID + 10;
final int settingsId = IDialogConstants.CLIENT_ID + 11;
final OptionalMessageDialog dialog =
new OptionalMessageDialog(
PREF_WARN_ABOUT_EMPTY_ASSIST_CATEGORY,
shell,
title,
null /* default image */,
message,
MessageDialog.WARNING,
new String[] {restoreButtonLabel, IDialogConstants.CLOSE_LABEL},
1) {
/*
* @see org.eclipse.jdt.internal.ui.dialogs.OptionalMessageDialog#createCustomArea(org.eclipse.swt.widgets.Composite)
*/
@Override
protected Control createCustomArea(Composite composite) {
// wrap link and checkbox in one composite without space
Composite parent = new Composite(composite, SWT.NONE);
GridLayout layout = new GridLayout();
layout.marginHeight = 0;
layout.marginWidth = 0;
layout.verticalSpacing = 0;
parent.setLayout(layout);
Composite linkComposite = new Composite(parent, SWT.NONE);
layout = new GridLayout();
layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
layout.marginWidth =
convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
layout.horizontalSpacing =
convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
linkComposite.setLayout(layout);
Link link = new Link(linkComposite, SWT.NONE);
link.setText(linkMessage);
link.addSelectionListener(
new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
setReturnCode(settingsId);
close();
}
});
GridData gridData = new GridData(SWT.FILL, SWT.BEGINNING, true, false);
gridData.widthHint = this.getMinimumMessageWidth();
link.setLayoutData(gridData);
// create checkbox and "don't show this message" prompt
super.createCustomArea(parent);
return parent;
}
/*
* @see org.eclipse.jface.dialogs.MessageDialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite)
*/
@Override
protected void createButtonsForButtonBar(Composite parent) {
Button[] buttons = new Button[2];
buttons[0] = createButton(parent, restoreId, restoreButtonLabel, false);
buttons[1] =
createButton(
parent, IDialogConstants.CLOSE_ID, IDialogConstants.CLOSE_LABEL, true);
setButtons(buttons);
}
};
int returnValue = dialog.open();
if (restoreId == returnValue || settingsId == returnValue) {
if (restoreId == returnValue) {
IPreferenceStore store = JavaPlugin.getDefault().getPreferenceStore();
store.setToDefault(PreferenceConstants.CODEASSIST_CATEGORY_ORDER);
store.setToDefault(PreferenceConstants.CODEASSIST_EXCLUDED_CATEGORIES);
}
if (settingsId == returnValue)
PreferencesUtil.createPreferenceDialogOn(
shell, "org.eclipse.jdt.ui.preferences.CodeAssistPreferenceAdvanced", null, null)
.open(); //$NON-NLS-1$
fComputerRegistry.reload();
return true;
}
}
return false;
}