Revision a5a9ec69
Added by Katja Luther over 4 years ago
| eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/combo/AbstractComboElement.java | ||
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*/ |
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package eu.etaxonomy.taxeditor.ui.combo; |
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import java.util.ArrayList; |
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import org.eclipse.equinox.internal.p2.ui.misc.StringMatcher; |
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import org.eclipse.jface.fieldassist.ComboContentAdapter; |
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import org.eclipse.jface.fieldassist.ContentProposalAdapter; |
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import org.eclipse.jface.fieldassist.IContentProposal; |
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import org.eclipse.jface.fieldassist.IContentProposalProvider; |
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import org.eclipse.swt.SWT; |
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import org.eclipse.swt.custom.CCombo; |
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import org.eclipse.swt.events.DisposeEvent; |
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protected final CCombo combo; |
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public AbstractComboElement(CdmFormFactory formFactory, ICdmFormElement formElement) {
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super(formFactory, formElement); |
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combo.setLayoutData(fill_HORIZONTALLY); |
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fill_HORIZONTALLY.maxWidth = 50; |
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combo.setVisibleItemCount(DEFAULT_VISIBLE_ITEMS); |
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ContentProposalAdapter adapter = new ContentProposalAdapter(combo, new ComboContentAdapter(), getProposalProvider(), null, null); |
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adapter.setPropagateKeys(true); |
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adapter.setProposalAcceptanceStyle(ContentProposalAdapter.PROPOSAL_REPLACE); |
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//disable mouse-wheel selection |
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combo.addListener(SWT.MouseWheel, e->e.doit=false); |
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} |
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} |
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public abstract void setSelection(T selection); |
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IContentProposalProvider getProposalProvider() {
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return new IContentProposalProvider() {
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@Override |
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public IContentProposal[] getProposals(String contents, int position) {
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String[] items = combo.getItems(); |
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if (contents.length() == 0 || items.length == 0) {
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return new IContentProposal[0]; |
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} |
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StringMatcher matcher = new StringMatcher("*" + contents + "*", true, false); //$NON-NLS-1$ //$NON-NLS-2$
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ArrayList<String> matches = new ArrayList<String>(); |
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for (int i = 0; i < items.length; i++) {
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if (matcher.match(items[i])) {
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matches.add(items[i]); |
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} |
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} |
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// We don't want to autoactivate if the only proposal exactly matches |
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// what is in the combo. This prevents the popup from |
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// opening when the user is merely scrolling through the combo values or |
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// has accepted a combo value. |
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if (matches.size() == 1 && matches.get(0).equals(combo.getText())) {
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return new IContentProposal[0]; |
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} |
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if (matches.isEmpty()) {
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return new IContentProposal[0]; |
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} |
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// Make the proposals |
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IContentProposal[] proposals = new IContentProposal[matches.size()]; |
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for (int i = 0; i < matches.size(); i++) {
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final String proposal = matches.get(i); |
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proposals[i] = new IContentProposal() {
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@Override |
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public String getContent() {
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return proposal; |
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} |
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@Override |
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public int getCursorPosition() {
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return proposal.length(); |
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} |
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@Override |
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public String getDescription() {
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return null; |
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} |
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@Override |
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public String getLabel() {
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return null; |
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} |
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}; |
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} |
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return proposals; |
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} |
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}; |
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} |
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} |
Also available in: Unified diff
ref #8749: add proposalProvider to combo elements