Java tutorial
/** * Copyright (C) 2010 BonitaSoft S.A. * BonitaSoft, 31 rue Gustave Eiffel - 38000 Grenoble * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 2.0 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.bonitasoft.forms.client.view.widget; import java.io.Serializable; import java.util.Map; import java.util.Map.Entry; import org.bonitasoft.forms.client.view.common.DOMUtils; import com.google.gwt.dom.client.Element; import com.google.gwt.dom.client.NodeList; import com.google.gwt.event.dom.client.BlurEvent; import com.google.gwt.event.dom.client.BlurHandler; import com.google.gwt.event.dom.client.ChangeEvent; import com.google.gwt.event.dom.client.ChangeHandler; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.dom.client.DoubleClickEvent; import com.google.gwt.event.dom.client.DoubleClickHandler; import com.google.gwt.event.dom.client.FocusEvent; import com.google.gwt.event.dom.client.FocusHandler; import com.google.gwt.event.dom.client.HasBlurHandlers; import com.google.gwt.event.dom.client.HasChangeHandlers; import com.google.gwt.event.dom.client.HasClickHandlers; import com.google.gwt.event.dom.client.HasDoubleClickHandlers; import com.google.gwt.event.dom.client.HasFocusHandlers; import com.google.gwt.event.dom.client.HasKeyDownHandlers; import com.google.gwt.event.dom.client.HasKeyUpHandlers; import com.google.gwt.event.dom.client.HasMouseDownHandlers; import com.google.gwt.event.dom.client.HasMouseMoveHandlers; import com.google.gwt.event.dom.client.HasMouseOutHandlers; import com.google.gwt.event.dom.client.HasMouseOverHandlers; import com.google.gwt.event.dom.client.HasMouseUpHandlers; import com.google.gwt.event.dom.client.KeyDownEvent; import com.google.gwt.event.dom.client.KeyDownHandler; import com.google.gwt.event.dom.client.KeyUpEvent; import com.google.gwt.event.dom.client.KeyUpHandler; import com.google.gwt.event.dom.client.MouseDownEvent; import com.google.gwt.event.dom.client.MouseDownHandler; import com.google.gwt.event.dom.client.MouseMoveEvent; import com.google.gwt.event.dom.client.MouseMoveHandler; import com.google.gwt.event.dom.client.MouseOutEvent; import com.google.gwt.event.dom.client.MouseOutHandler; import com.google.gwt.event.dom.client.MouseOverEvent; import com.google.gwt.event.dom.client.MouseOverHandler; import com.google.gwt.event.dom.client.MouseUpEvent; import com.google.gwt.event.dom.client.MouseUpHandler; import com.google.gwt.event.logical.shared.HasValueChangeHandlers; import com.google.gwt.event.logical.shared.ValueChangeEvent; import com.google.gwt.event.logical.shared.ValueChangeHandler; import com.google.gwt.user.client.ui.CheckBox; import com.google.gwt.user.client.ui.SuggestBox; import com.google.gwt.user.client.ui.Widget; import com.google.gwt.user.datepicker.client.DateBox; /** * @author Anthony Birembaut * */ public class ElementAttributeSupport { /** * Supported HTML events on form fields and buttons * */ private static enum SUPPORTED_EVENT { onclick, ondbclick, onmousedown, onmousemove, onmouseout, onmouseover, onmouseup, onchange, onblur, onfocus, onkeydown, onkeypress, onkeyup }; /** * Set the HTML attributes of a widget. * @param fieldWidget the field widget * @param widgetData the widget data object */ public void addHtmlAttributes(final Widget fieldWidget, final Map<String, String> htmlAttributes) { if (htmlAttributes.size() > 0) { for (final Entry<String, String> htmlAttribute : htmlAttributes.entrySet()) { addHtmlAttribute(fieldWidget, htmlAttribute.getKey(), htmlAttribute.getValue()); } } } protected void addHtmlAttribute(Widget fieldWidget, final String htmlAttributeName, final String htmlAttributeValue) { //Working for bug 4991: the "Html Attributes" of date widget if (fieldWidget instanceof DateBox) { fieldWidget = ((DateBox) fieldWidget).getTextBox(); } try { final SUPPORTED_EVENT event = SUPPORTED_EVENT.valueOf(htmlAttributeName.toLowerCase()); switch (event) { case onclick: ((HasClickHandlers) fieldWidget).addClickHandler(new ClickHandler() { public void onClick(final ClickEvent event) { DOMUtils.getInstance().javascriptEval(htmlAttributeValue); } }); break; case ondbclick: ((HasDoubleClickHandlers) fieldWidget).addDoubleClickHandler(new DoubleClickHandler() { public void onDoubleClick(final DoubleClickEvent event) { DOMUtils.getInstance().javascriptEval(htmlAttributeValue); } }); break; case onblur: ((HasBlurHandlers) fieldWidget).addBlurHandler(new BlurHandler() { public void onBlur(final BlurEvent event) { DOMUtils.getInstance().javascriptEval(htmlAttributeValue); } }); break; case onchange: if (fieldWidget instanceof HasChangeHandlers) { ((HasChangeHandlers) fieldWidget).addChangeHandler(new ChangeHandler() { public void onChange(final ChangeEvent event) { DOMUtils.getInstance().javascriptEval(htmlAttributeValue); } }); } else if (fieldWidget instanceof HasValueChangeHandlers<?>) { final HasValueChangeHandlers<Serializable> widget = (HasValueChangeHandlers<Serializable>) fieldWidget; widget.addValueChangeHandler(new ValueChangeHandler<Serializable>() { public void onValueChange(final ValueChangeEvent<Serializable> event) { DOMUtils.getInstance().javascriptEval(htmlAttributeValue); } }); } break; case onfocus: ((HasFocusHandlers) fieldWidget).addFocusHandler(new FocusHandler() { public void onFocus(final FocusEvent event) { DOMUtils.getInstance().javascriptEval(htmlAttributeValue); } }); break; case onkeydown: ((HasKeyDownHandlers) fieldWidget).addKeyDownHandler(new KeyDownHandler() { public void onKeyDown(final KeyDownEvent event) { DOMUtils.getInstance().javascriptEval(htmlAttributeValue); } }); break; case onkeyup: ((HasKeyUpHandlers) fieldWidget).addKeyUpHandler(new KeyUpHandler() { public void onKeyUp(final KeyUpEvent event) { DOMUtils.getInstance().javascriptEval(htmlAttributeValue); } }); break; case onkeypress: ((HasKeyUpHandlers) fieldWidget).addKeyUpHandler(new KeyUpHandler() { public void onKeyUp(final KeyUpEvent event) { DOMUtils.getInstance().javascriptEval(htmlAttributeValue); } }); break; case onmousedown: ((HasMouseDownHandlers) fieldWidget).addMouseDownHandler(new MouseDownHandler() { public void onMouseDown(final MouseDownEvent event) { DOMUtils.getInstance().javascriptEval(htmlAttributeValue); } }); break; case onmouseup: ((HasMouseUpHandlers) fieldWidget).addMouseUpHandler(new MouseUpHandler() { public void onMouseUp(final MouseUpEvent event) { DOMUtils.getInstance().javascriptEval(htmlAttributeValue); } }); break; case onmouseover: ((HasMouseOverHandlers) fieldWidget).addMouseOverHandler(new MouseOverHandler() { public void onMouseOver(final MouseOverEvent event) { DOMUtils.getInstance().javascriptEval(htmlAttributeValue); } }); break; case onmouseout: ((HasMouseOutHandlers) fieldWidget).addMouseOutHandler(new MouseOutHandler() { public void onMouseOut(final MouseOutEvent event) { DOMUtils.getInstance().javascriptEval(htmlAttributeValue); } }); break; case onmousemove: ((HasMouseMoveHandlers) fieldWidget).addMouseMoveHandler(new MouseMoveHandler() { public void onMouseMove(final MouseMoveEvent event) { DOMUtils.getInstance().javascriptEval(htmlAttributeValue); } }); break; default: break; } } catch (final Exception e) { if (fieldWidget instanceof CheckBox || fieldWidget instanceof CheckboxGroupWidget || fieldWidget instanceof RadioButtonGroupWidget || fieldWidget instanceof FileUploadWidget || fieldWidget instanceof SuggestBox || fieldWidget instanceof AsyncSuggestBoxWidget || fieldWidget instanceof DateBox) { final NodeList<Element> inputs = fieldWidget.getElement().getElementsByTagName("input"); if (inputs != null) { for (int i = 0; i < inputs.getLength(); i++) { inputs.getItem(i).setAttribute(htmlAttributeName, htmlAttributeValue); } } } else if (fieldWidget instanceof DurationWidget) { final NodeList<Element> selects = fieldWidget.getElement().getElementsByTagName("select"); if (selects != null) { for (int i = 0; i < selects.getLength(); i++) { selects.getItem(i).setAttribute(htmlAttributeName, htmlAttributeValue); } } } else if (fieldWidget instanceof ImageWidget) { final NodeList<Element> images = fieldWidget.getElement().getElementsByTagName("img"); if (images != null) { for (int i = 0; i < images.getLength(); i++) { images.getItem(i).setAttribute(htmlAttributeName, htmlAttributeValue); } } } else if (fieldWidget instanceof FileDownloadWidget) { final NodeList<Element> links = fieldWidget.getElement().getElementsByTagName("a"); if (links != null) { for (int i = 0; i < links.getLength(); i++) { links.getItem(i).setAttribute(htmlAttributeName, htmlAttributeValue); } } } else if (fieldWidget instanceof TableWidget || fieldWidget instanceof EditableGridWidget) { final NodeList<Element> tables = fieldWidget.getElement().getElementsByTagName("table"); if (tables != null) { for (int i = 0; i < tables.getLength(); i++) { tables.getItem(i).setAttribute(htmlAttributeName, htmlAttributeValue); } } } else if (fieldWidget instanceof RichTextWidget) { final NodeList<Element> iframes = fieldWidget.getElement().getElementsByTagName("iframe"); if (iframes != null) { for (int i = 0; i < iframes.getLength(); i++) { iframes.getItem(i).setAttribute(htmlAttributeName, htmlAttributeValue); } } } else { fieldWidget.getElement().setAttribute(htmlAttributeName, htmlAttributeValue); } } } }