Java tutorial
/* * Copyright (c) 2008-2016 Haulmont. * * 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.haulmont.cuba.web.toolkit.ui.client.label; import com.google.gwt.dom.client.Document; import com.google.gwt.dom.client.PreElement; import com.haulmont.cuba.web.toolkit.ui.CubaLabel; import com.vaadin.client.Profiler; import com.vaadin.client.WidgetUtil; import com.vaadin.client.communication.StateChangeEvent; import com.vaadin.client.ui.Icon; import com.vaadin.client.ui.label.LabelConnector; import com.vaadin.shared.ui.Connect; @Connect(value = CubaLabel.class, loadStyle = Connect.LoadStyle.EAGER) public class CubaLabelConnector extends LabelConnector { @Override public boolean delegateCaptionHandling() { return false; } @Override public void onStateChanged(StateChangeEvent stateChangeEvent) { // CAUTION copied from superclass super.onStateChanged(stateChangeEvent); boolean sinkOnloads = false; Profiler.enter("LabelConnector.onStateChanged update content"); switch (getState().contentMode) { case PREFORMATTED: PreElement preElement = Document.get().createPreElement(); preElement.setInnerText(getState().text); // clear existing content getWidget().setHTML(""); // add preformatted text to dom getWidget().getElement().appendChild(preElement); break; case TEXT: // clear existing content getWidget().setHTML(""); // set multiline text if needed // Haulmont API String text = getState().text; if (text != null && text.contains("\n")) { text = WidgetUtil.escapeHTML(text).replace("\n", "<br/>"); getWidget().setHTML(text); } else { getWidget().setText(text); } break; case HTML: case RAW: sinkOnloads = true; case XML: getWidget().setHTML(getState().text); break; default: getWidget().setText(""); break; } // Haulmont API if ("".equals(getWidget().getText()) || getWidget().getText() == null) { getWidget().addStyleDependentName("empty"); } else { getWidget().removeStyleDependentName("empty"); } updateIcon(); Profiler.leave("LabelConnector.onStateChanged update content"); if (sinkOnloads) { Profiler.enter("LabelConnector.onStateChanged sinkOnloads"); WidgetUtil.sinkOnloadForImages(getWidget().getElement()); Profiler.leave("LabelConnector.onStateChanged sinkOnloads"); } } protected void updateIcon() { Icon icon = getIcon(); if (icon != null) { getWidget().getElement().insertFirst(icon.getElement()); } } }