private void checkPage() { boolean createBranchSelected = createBranch.getSelection(); branchText.setEnabled(createBranchSelected); branchText.setVisible(createBranchSelected); branchTextlabel.setVisible(createBranchSelected); GridData gd = (GridData) branchText.getLayoutData(); gd.exclude = !createBranchSelected; gd = (GridData) branchTextlabel.getLayoutData(); gd.exclude = !createBranchSelected; boolean createTagSelected = createTag.getSelection(); tagText.setEnabled(createTagSelected); tagText.setVisible(createTagSelected); tagTextlabel.setVisible(createTagSelected); gd = (GridData) tagText.getLayoutData(); gd.exclude = !createTagSelected; gd = (GridData) tagTextlabel.getLayoutData(); gd.exclude = !createTagSelected; branchText.getParent().layout(true); boolean showActivateAdditionalRefs = false; showActivateAdditionalRefs = (checkout.getSelection() || dontCheckout.getSelection()) && !Activator.getDefault() .getPreferenceStore() .getBoolean(UIPreferences.RESOURCEHISTORY_SHOW_ADDITIONAL_REFS); gd = (GridData) warningAdditionalRefNotActive.getLayoutData(); gd.exclude = !showActivateAdditionalRefs; warningAdditionalRefNotActive.setVisible(showActivateAdditionalRefs); warningAdditionalRefNotActive.getParent().layout(true); setErrorMessage(null); try { if (refText.getText().length() > 0) { Change change = Change.fromRef(refText.getText()); if (change == null) { setErrorMessage(UIText.FetchGerritChangePage_MissingChangeMessage); return; } } else { setErrorMessage(UIText.FetchGerritChangePage_MissingChangeMessage); return; } boolean emptyRefName = (createBranchSelected && branchText.getText().length() == 0) || (createTagSelected && tagText.getText().length() == 0); if (emptyRefName) { setErrorMessage(UIText.FetchGerritChangePage_ProvideRefNameMessage); return; } boolean existingRefName = (createBranchSelected && repository.getRef(branchText.getText()) != null) || (createTagSelected && repository.getRef(tagText.getText()) != null); if (existingRefName) { setErrorMessage( NLS.bind(UIText.FetchGerritChangePage_ExistingRefMessage, branchText.getText())); return; } } catch (IOException e1) { // ignore here } finally { setPageComplete(getErrorMessage() == null); } }