Java tutorial
/** * This file Copyright (c) 2013-2015 Magnolia International * Ltd. (http://www.magnolia-cms.com). All rights reserved. * * * This file is dual-licensed under both the Magnolia * Network Agreement and the GNU General Public License. * You may elect to use one or the other of these licenses. * * This file is distributed in the hope that it will be * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the * implied warranty of MERCHANTABILITY or FITNESS FOR A * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT. * Redistribution, except as permitted by whichever of the GPL * or MNA you select, is prohibited. * * 1. For the GPL license (GPL), you can redistribute and/or * modify this file under the terms of the GNU General * Public License, Version 3, as published by the Free Software * Foundation. You should have received a copy of the GNU * General Public License, Version 3 along with this program; * if not, write to the Free Software Foundation, Inc., 51 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * 2. For the Magnolia Network Agreement (MNA), this file * and the accompanying materials are made available under the * terms of the MNA which accompanies this distribution, and * is available at http://www.magnolia-cms.com/mna.html * * Any modifications to this file must keep this entire header * intact. * */ package info.magnolia.ui.vaadin.gwt.client.dialog.widget; import info.magnolia.ui.vaadin.gwt.client.CloseButton; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.user.client.DOM; import com.google.gwt.user.client.Element; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.FlowPanel; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.Widget; /** * DialogHeaderWidget. */ public class DialogHeaderWidget extends FlowPanel { private static final String CLASSNAME_HEADER = "dialog-header"; private static final String ClASSNAME_DESCRIPTION = "dialog-description"; private static final String CLASSNAME_WIDEBUTTON = "btn-form-wide"; private static final String CLASSNAME_WIDEBUTTON_ICON = "icon-open-fullscreen-2"; private static final String CLASSNAME_WIDEBUTTON_ICON_CLOSE = "icon-close-fullscreen-2"; private static final String CLASSNAME_HELPBUTTON = "btn-form-help"; private static final String CLASSNAME_HEADER_TOOLBAR = "dialog-header-toolbar"; protected CloseButton closeButton = new CloseButton(); protected DialogHeaderCallback callback = null; protected final FlowPanel descriptionPanel = new FlowPanel(); protected final Element headerPanel = DOM.createDiv(); protected final Element caption = DOM.createSpan(); protected final Element toolbarEl = DOM.createSpan(); protected Widget toolbar; protected static boolean isDescriptionVisible = false; protected boolean hasDescription = false; protected boolean isWide = false; protected final Button helpButton = new Button("", new ClickHandler() { @Override public void onClick(ClickEvent event) { isDescriptionVisible = !isDescriptionVisible; onDescriptionVisibility(); } }); protected final Button wideButton = new Button("", new ClickHandler() { @Override public void onClick(ClickEvent event) { isWide = !isWide; onWideChanged(); } }); private void onWideChanged() { callback.onWideChanged(isWide); setWideIcon(); } private void setWideIcon() { if (isWide) { wideButton.removeStyleName(CLASSNAME_WIDEBUTTON_ICON); wideButton.addStyleName(CLASSNAME_WIDEBUTTON_ICON_CLOSE); } else { wideButton.removeStyleName(CLASSNAME_WIDEBUTTON_ICON_CLOSE); wideButton.addStyleName(CLASSNAME_WIDEBUTTON_ICON); } } private void onDescriptionVisibility() { if (hasDescription) { descriptionPanel.setVisible(isDescriptionVisible); } callback.onDescriptionVisibilityChanged(isDescriptionVisible); } @Override protected void onLoad() { super.onLoad(); onDescriptionVisibility(); if (hasDescription) { if (this.getElement().getParentElement() != null) { this.getElement().getParentElement().setAttribute("role", "dialogDescriptionHeader"); } } } public DialogHeaderWidget(DialogHeaderCallback callback) { this.callback = callback; callback.onDescriptionVisibilityChanged(false); construct(); } public void construct() { closeButton.addStyleDependentName("dialog"); closeButton.setVisible(false); headerPanel.appendChild(closeButton.getElement()); addDomHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { Element target = event.getNativeEvent().getEventTarget().cast(); if (closeButton.getElement().isOrHasChild(target)) { callback.onCloseFired(); } } }, ClickEvent.getType()); headerPanel.addClassName(CLASSNAME_HEADER); descriptionPanel.addStyleName(ClASSNAME_DESCRIPTION); wideButton.setStyleName(CLASSNAME_WIDEBUTTON); setWideIcon(); helpButton.setStyleName(CLASSNAME_HELPBUTTON); toolbarEl.addClassName(CLASSNAME_HEADER_TOOLBAR); getElement().appendChild(headerPanel); caption.addClassName("title"); headerPanel.appendChild(caption); add(wideButton, headerPanel); add(helpButton, headerPanel); headerPanel.appendChild(toolbarEl); descriptionPanel.setVisible(false); add(descriptionPanel); } public void setDescription(String description) { final Label content = new Label(); content.setText(description); descriptionPanel.insert(content, 0); hasDescription = !description.isEmpty(); if (hasDescription) { descriptionPanel.setVisible(isDescriptionVisible); if (this.getElement().getParentElement() != null) { this.getElement().getParentElement().setAttribute("role", "dialogDescriptionHeader"); } } } public void setWide(boolean isWide) { this.isWide = isWide; setWideIcon(); } public void setCaption(String caption) { this.caption.setInnerText(caption); } public void setToolbar(Widget toolbarWidget) { if (toolbar != null) { remove(toolbar); } toolbar = toolbarWidget; add(toolbarWidget, toolbarEl); } public void showCloseButton() { closeButton.setVisible(true); } /** * Callback interface for the EditorLike header. */ public interface DialogHeaderCallback { void onDescriptionVisibilityChanged(boolean isVisible); void onCloseFired(); void onWideChanged(boolean isWide); } }