Java Code Examples for com.google.gwt.user.client.ui.PopupPanel#showRelativeTo()

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Example 1
Source File: AriaSuggestBox.java    From unitime with Apache License 2.0 4 votes vote down vote up 
public AriaSuggestBox(AriaTextBox box, SuggestOracle oracle) {
	iOracle = oracle;
	iText = box;
	iText.setStyleName("gwt-SuggestBox");
	initWidget(iText);
	
	addEventsToTextBox();
	
	iSuggestionMenu = new SuggestionMenu();
	
	iPopupScroll = new ScrollPanel(iSuggestionMenu);
	iPopupScroll.addStyleName("scroll");
	
	iSuggestionPopup = new PopupPanel(true, false);
	iSuggestionPopup.setPreviewingAllNativeEvents(true);
	iSuggestionPopup.setStyleName("unitime-SuggestBoxPopup");
	iSuggestionPopup.setWidget(iPopupScroll);
	iSuggestionPopup.addAutoHidePartner(getElement());
	
	iSuggestionCallback = new SuggestionCallback() {
		@Override
		public void onSuggestionSelected(Suggestion suggestion) {
			if (!suggestion.getReplacementString().isEmpty()) {
				setStatus(ARIA.suggestionSelected(status(suggestion)));
			}
			iCurrentText = suggestion.getReplacementString();
			setText(suggestion.getReplacementString());
			hideSuggestionList();
			fireSuggestionEvent(suggestion);
		}
	};
	
	iOracleCallback = new SuggestOracle.Callback() {
		@Override
		public void onSuggestionsReady(Request request, Response response) {
			if (response.getSuggestions() == null || response.getSuggestions().isEmpty()) {
				if (iSuggestionPopup.isShowing()) iSuggestionPopup.hide();
			} else {
				iSuggestionMenu.clearItems();
				SuggestOracle.Suggestion first = null;
				for (SuggestOracle.Suggestion suggestion: response.getSuggestions()) {
					iSuggestionMenu.addItem(new SuggestionMenuItem(suggestion));
					if (first == null) first = suggestion;
				}
				iSuggestionMenu.selectItem(0);
				ToolBox.setMinWidth(iSuggestionMenu.getElement().getStyle(), (iText.getElement().getClientWidth() - 4) + "px");
				iSuggestionPopup.showRelativeTo(iText);
				iSuggestionMenu.scrollToView();
				if (response.getSuggestions().size() == 1) {
					if (first.getReplacementString().isEmpty())
						setStatus(status(first));
					else
						setStatus(ARIA.showingOneSuggestion(status(first)));
				} else {
					setStatus(ARIA.showingMultipleSuggestions(response.getSuggestions().size(), request.getQuery(), status(first)));
				}
			}
		}
	};
	
	Roles.getTextboxRole().setAriaAutocompleteProperty(iText.getElement(), AutocompleteValue.NONE);
	
	iSuggestionPopup.getElement().setAttribute("id", DOM.createUniqueId());
	Roles.getTextboxRole().setAriaOwnsProperty(iText.getElement(), Id.of(iSuggestionPopup.getElement()));
}