| // Copyright (C) 2014 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| package com.google.gerrit.client.ui; |
| |
| import com.google.gwt.event.dom.client.FocusEvent; |
| import com.google.gwt.event.dom.client.FocusHandler; |
| import com.google.gwt.event.dom.client.KeyCodes; |
| import com.google.gwt.event.dom.client.KeyDownEvent; |
| import com.google.gwt.event.dom.client.KeyDownHandler; |
| import com.google.gwt.event.logical.shared.CloseEvent; |
| import com.google.gwt.event.logical.shared.CloseHandler; |
| import com.google.gwt.event.logical.shared.HasCloseHandlers; |
| import com.google.gwt.event.logical.shared.HasSelectionHandlers; |
| import com.google.gwt.event.logical.shared.SelectionEvent; |
| import com.google.gwt.event.logical.shared.SelectionHandler; |
| import com.google.gwt.event.shared.HandlerRegistration; |
| import com.google.gwt.user.client.ui.Composite; |
| import com.google.gwt.user.client.ui.Focusable; |
| import com.google.gwt.user.client.ui.HasText; |
| import com.google.gwt.user.client.ui.SuggestBox; |
| import com.google.gwt.user.client.ui.SuggestBox.DefaultSuggestionDisplay; |
| import com.google.gwt.user.client.ui.SuggestOracle; |
| import com.google.gwt.user.client.ui.SuggestOracle.Suggestion; |
| import com.google.gwt.user.client.ui.TextBoxBase; |
| |
| public class RemoteSuggestBox extends Composite |
| implements Focusable, |
| HasText, |
| HasSelectionHandlers<String>, |
| HasCloseHandlers<RemoteSuggestBox> { |
| private final RemoteSuggestOracle remoteSuggestOracle; |
| private final DefaultSuggestionDisplay display; |
| private final HintTextBox textBox; |
| private final SuggestBox suggestBox; |
| private boolean submitOnSelection; |
| |
| public RemoteSuggestBox(SuggestOracle oracle) { |
| remoteSuggestOracle = new RemoteSuggestOracle(oracle); |
| remoteSuggestOracle.setServeSuggestions(true); |
| display = new DefaultSuggestionDisplay(); |
| |
| textBox = new HintTextBox(); |
| textBox.addKeyDownHandler( |
| new KeyDownHandler() { |
| @Override |
| public void onKeyDown(KeyDownEvent e) { |
| submitOnSelection = false; |
| if (e.getNativeKeyCode() == KeyCodes.KEY_ESCAPE) { |
| CloseEvent.fire(RemoteSuggestBox.this, RemoteSuggestBox.this); |
| } else if (e.getNativeKeyCode() == KeyCodes.KEY_ENTER) { |
| if (display.isSuggestionListShowing()) { |
| if (textBox.getValue().equals(remoteSuggestOracle.getLast())) { |
| submitOnSelection = true; |
| } else { |
| display.hideSuggestions(); |
| } |
| } else { |
| SelectionEvent.fire(RemoteSuggestBox.this, getText()); |
| } |
| } |
| } |
| }); |
| |
| suggestBox = new SuggestBox(remoteSuggestOracle, textBox, display); |
| suggestBox.addSelectionHandler( |
| new SelectionHandler<Suggestion>() { |
| @Override |
| public void onSelection(SelectionEvent<Suggestion> event) { |
| if (submitOnSelection) { |
| SelectionEvent.fire(RemoteSuggestBox.this, getText()); |
| } |
| remoteSuggestOracle.cancelOutstandingRequest(); |
| display.hideSuggestions(); |
| } |
| }); |
| initWidget(suggestBox); |
| } |
| |
| public void setHintText(String hint) { |
| textBox.setHintText(hint); |
| } |
| |
| public void setVisibleLength(int len) { |
| textBox.setVisibleLength(len); |
| } |
| |
| public void setEnabled(boolean enabled) { |
| suggestBox.setEnabled(enabled); |
| } |
| |
| public TextBoxBase getTextBox() { |
| return textBox; |
| } |
| |
| @Override |
| public String getText() { |
| return suggestBox.getText(); |
| } |
| |
| @Override |
| public void setText(String value) { |
| suggestBox.setText(value); |
| } |
| |
| @Override |
| public void setFocus(boolean focus) { |
| suggestBox.setFocus(focus); |
| } |
| |
| @Override |
| public int getTabIndex() { |
| return suggestBox.getTabIndex(); |
| } |
| |
| @Override |
| public void setAccessKey(char key) { |
| suggestBox.setAccessKey(key); |
| } |
| |
| @Override |
| public void setTabIndex(int index) { |
| suggestBox.setTabIndex(index); |
| } |
| |
| @Override |
| public HandlerRegistration addSelectionHandler(SelectionHandler<String> h) { |
| return addHandler(h, SelectionEvent.getType()); |
| } |
| |
| @Override |
| public HandlerRegistration addCloseHandler(CloseHandler<RemoteSuggestBox> h) { |
| return addHandler(h, CloseEvent.getType()); |
| } |
| |
| public void selectAll() { |
| suggestBox.getValueBox().selectAll(); |
| } |
| |
| public void enableDefaultSuggestions() { |
| textBox.addFocusHandler( |
| new FocusHandler() { |
| @Override |
| public void onFocus(FocusEvent focusEvent) { |
| if (textBox.getText().equals("")) { |
| suggestBox.showSuggestionList(); |
| } |
| } |
| }); |
| } |
| |
| public void setServeSuggestionsOnOracle(boolean serveSuggestions) { |
| remoteSuggestOracle.setServeSuggestions(serveSuggestions); |
| } |
| } |