Java tutorial
package org.vaadin.smartgwt.server.core; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; import java.util.HashMap; import java.util.Map; import com.vaadin.terminal.PaintException; import com.vaadin.terminal.PaintTarget; import com.vaadin.ui.AbstractComponent; /* * SmartGWT (GWT for SmartClient) * Copyright 2008 and beyond, Isomorphic Software, Inc. * * SmartGWT is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License version 3 * as published by the Free Software Foundation. SmartGWT is also * available under typical commercial license terms - see * smartclient.com/license. * * This software 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 * Lesser General Public License for more details. */ public abstract class BaseClass extends AbstractComponent { protected String id; // protected JavaScriptObject config; //= JSOHelper.createObject(); protected String scClassName; // public BaseClass() { // String id = SC.generateID(getClass().getName()); // setID(id);` // } // protected BaseClass(JavaScriptObject jsObj) { // String nativeID = JSOHelper.getAttribute(jsObj, "ID"); // this.id = nativeID; // } /** * Return the ID * * @return the ID */ public String getID() { return id; } public void setID(String id) { // if (this.id != null) { // IDManager.unregisterID(this.id); // } // IDManager.registerID(id); setAttribute("ID", id, false); this.id = id; } /** * Get the name of the underlying SmartClient class * * @return the SmartClient class name */ public String getScClassName() { return scClassName; } /** * Set the name of the underlying SmartClient class. This is an advanced setting. * * @param scClassName the SmartClient class */ public void setScClassName(String scClassName) { this.scClassName = scClassName; } // public JavaScriptObject getConfig() { // return config; // } // public native boolean isCreated()/*-{ // var id = this.@com.smartgwt.client.core.BaseClass::getID()(); // var obj = $wnd.window[id]; // // && $wnd.isc.isA.Canvas(obj) === true // return id != null && obj != null && obj !== undefined; // }-*/; // // public native JavaScriptObject getJsObj()/*-{ // var id = this.@com.smartgwt.client.core.BaseClass::getID()(); // if($wnd.window[id] != null && $wnd.window[id]!== undefined) { // return $wnd.window[id]; // } else { // return null; // } // }-*/; // // public JavaScriptObject getOrCreateJsObj() { // if (!isCreated()) { // JavaScriptObject jsObj = create(); // JSOHelper.setAttribute(jsObj, SC.REF, this); // onInit(); // return jsObj; // } else { // return getJsObj(); // } // } // public static BaseClass getRef(JavaScriptObject jsObj) { // return jsObj == null ? null : (BaseClass) JSOHelper.getAttributeAsObject(jsObj, SC.REF); // } // // /** // * Destroy this object. // */ // public native void destroy()/*-{ // var self = this.@com.smartgwt.client.core.BaseClass::getJsObj()(); // var ID = this.@com.smartgwt.client.core.BaseClass::getID()(); // if (self != null && self.destroy) self.destroy(); // if (ID != null) { // @com.smartgwt.client.util.IDManager::unregisterID(Ljava/lang/String;)(ID); // } // }-*/; protected void error(String attribute, String value, boolean allowPostCreate) throws IllegalStateException { if (allowPostCreate) { error("Cannot change configuration property '" + attribute + "' to " + value + " after the component has been rendered."); } else { error("Cannot change configuration property '" + attribute + "' to " + value + " after the component has been created."); } } protected void errorIfNotCreated(String property) throws IllegalStateException { if (!isCreated()) { throw new IllegalStateException( "Cannot access property " + property + " before the component has been created."); } } protected void error(String message) throws IllegalStateException { // if (!GWT.isScript()) { // Window.alert("Error :" + message); throw new IllegalStateException(message); // } } // protected abstract JavaScriptObject create(); // protected void onInit() {} // public String getAttribute(String attribute) { // return getAttributeAsString(attribute); // } // public native String getAttributeAsString(String property)/*-{ // var ret; // if(this.@com.smartgwt.client.core.BaseClass::isCreated()()) { // var widget = this.@com.smartgwt.client.core.BaseClass::getJsObj()(); // ret = widget.getProperty(property); // } else { // var config = this.@com.smartgwt.client.core.BaseClass::config; // if(config[property] != undefined) { // ret = config[property]; // } else { // var scClassName = this.@com.smartgwt.client.core.BaseClass::scClassName; // ret = eval("($wnd.isc." + scClassName + ".getInstanceProperty('" + property + "'))") // } // } // return ret === undefined ? null : ret; // }-*/; // // public native Date getAttributeAsDate(String property)/*-{ // var ret; // if(this.@com.smartgwt.client.core.BaseClass::isCreated()()) { // var widget = this.@com.smartgwt.client.core.BaseClass::getJsObj()(); // ret = widget.getProperty(property); // } else { // var config = this.@com.smartgwt.client.core.BaseClass::config; // if(config[property] != undefined) { // ret = config[property]; // } else { // var scClassName = this.@com.smartgwt.client.core.BaseClass::scClassName; // ret = eval("($wnd.isc." + scClassName + ".getInstanceProperty('" + property + "'))") // } // } // * return ret == null || ret === undefined ? null : @com.smartgwt.client.util.JSOHelper::toDate(D)(ret.getTime()); // }-*/; // // public native Integer getAttributeAsInt(String property)/*-{ // var ret; // if(this.@com.smartgwt.client.core.BaseClass::isCreated()()) { // var widget = this.@com.smartgwt.client.core.BaseClass::getJsObj()(); // ret = widget.getProperty(property); // } else { // var config = this.@com.smartgwt.client.core.BaseClass::config; // if(config[property] != undefined) { // ret = config[property]; // } else { // var scClassName = this.@com.smartgwt.client.core.BaseClass::scClassName; // ret = eval("($wnd.isc." + scClassName + ".getInstanceProperty('" + property + "'))") // } // } // return ret == null || ret === undefined ? null : @com.smartgwt.client.util.JSOHelper::toInteger(I)(ret); // }-*/; // // public native Double getAttributeAsDouble(String property)/*-{ // var ret; // if(this.@com.smartgwt.client.core.BaseClass::isCreated()()) { // var widget = this.@com.smartgwt.client.core.BaseClass::getJsObj()(); // ret = widget.getProperty(property); // } else { // var config = this.@com.smartgwt.client.core.BaseClass::config; // if(config[property] != undefined) { // ret = config[property]; // } else { // var scClassName = this.@com.smartgwt.client.core.BaseClass::scClassName; // ret = eval("($wnd.isc." + scClassName + ".getInstanceProperty('" + property + "'))") // } // } // return ret == null || ret === undefined ? null : @com.smartgwt.client.util.JSOHelper::toDouble(D)(ret); // }-*/; // // public native Element getAttributeAsElement(String property)/*-{ // var ret; // if(this.@com.smartgwt.client.core.BaseClass::isCreated()()) { // var widget = this.@com.smartgwt.client.core.BaseClass::getJsObj()(); // ret = widget.getProperty(property); // } else { // var config = this.@com.smartgwt.client.core.BaseClass::config; // if(config[property] != undefined) { // ret = config[property]; // } else { // var scClassName = this.@com.smartgwt.client.core.BaseClass::scClassName; // ret = eval("($wnd.isc." + scClassName + ".getInstanceProperty('" + property + "'))") // } // } // return ret === undefined ? null : ret; // }-*/; // // public native JavaScriptObject getAttributeAsJavaScriptObject(String property)/*-{ // var ret; // if(this.@com.smartgwt.client.core.BaseClass::isCreated()()) { // var widget = this.@com.smartgwt.client.core.BaseClass::getJsObj()(); // ret = widget.getProperty(property); // } else { // var config = this.@com.smartgwt.client.core.BaseClass::config; // if(config[property] != undefined) { // ret = config[property]; // } else { // var scClassName = this.@com.smartgwt.client.core.BaseClass::scClassName; // ret = eval("($wnd.isc." + scClassName + ".getInstanceProperty('" + property + "'))") // } // } // return ret === undefined ? null : ret; // }-*/; // // public native Float getAttributeAsFloat(String property)/*-{ // var ret; // if(this.@com.smartgwt.client.core.BaseClass::isCreated()()) { // var widget = this.@com.smartgwt.client.core.BaseClass::getJsObj()(); // ret = widget.getProperty(property); // } else { // var config = this.@com.smartgwt.client.core.BaseClass::config; // if(config[property] != undefined) { // ret = config[property]; // } else { // var scClassName = this.@com.smartgwt.client.core.BaseClass::scClassName; // ret = eval("($wnd.isc." + scClassName + ".getInstanceProperty('" + property + "'))") // } // } // return ret == null || ret === undefined ? null : @com.smartgwt.client.util.JSOHelper::toFloat(F)(ret); // }-*/; // // public native Boolean getAttributeAsBoolean(String property)/*-{ // var ret; // if(this.@com.smartgwt.client.core.BaseClass::isCreated()()) { // var widget = this.@com.smartgwt.client.core.BaseClass::getJsObj()(); // ret = widget.getProperty(property); // } else { // var config = this.@com.smartgwt.client.core.BaseClass::config; // if(config[property] != undefined) { // ret = config[property]; // } else { // var scClassName = this.@com.smartgwt.client.core.BaseClass::scClassName; // ret = eval("($wnd.isc." + scClassName + ".getInstanceProperty('" + property + "'))") // } // } // return ret == null || ret === undefined ? null : @com.smartgwt.client.util.JSOHelper::toBoolean(Z)(ret); // }-*/; // // public Map getAttributeAsMap(String property) { // return JSOHelper.getAttributeAsMap(getOrCreateJsObj(), property); // } // // // public void setAttribute(String attribute, String value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, value); // } else if (allowPostCreate) { // setProperty(attribute, value); // } else { // error(attribute, value, allowPostCreate); // } // } // // public void setAttribute(String attribute, Boolean value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, value); // } else if (allowPostCreate) { // setProperty(attribute, value); // } else { // error(attribute, value.toString(), allowPostCreate); // } // } // // public void setAttribute(String attribute, Map value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, JSOHelper.convertMapToJavascriptObject(value)); // } else if (allowPostCreate) { // setProperty(attribute, JSOHelper.convertMapToJavascriptObject(value)); // } else { // error(attribute, value.toString(), allowPostCreate); // } // } // // public void setAttribute(String attribute, int[] value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, JSOHelper.convertToJavaScriptArray(value)); // } else if (allowPostCreate) { // setProperty(attribute, JSOHelper.convertToJavaScriptArray(value)); // } else { // error(attribute, value.toString(), allowPostCreate); // } // } // // public void setAttribute(String attribute, BaseClass[] value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, JSOHelper.convertToJavaScriptArray(value)); // } else if (allowPostCreate) { // setProperty(attribute, JSOHelper.convertToJavaScriptArray(value)); // } else { // error(attribute, value.toString(), allowPostCreate); // } // } // // public void setAttribute(String attribute, DataClass[] value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, JSOHelper.convertToJavaScriptArray(value)); // } else if (allowPostCreate) { // setProperty(attribute, JSOHelper.convertToJavaScriptArray(value)); // } else { // error(attribute, value.toString(), allowPostCreate); // } // } // // // public void setAttribute(String attribute, double value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, value); // } else if (allowPostCreate) { // setProperty(attribute, value); // } else { // error(attribute, String.valueOf(value), allowPostCreate); // } // } // // public void setAttribute(String attribute, int value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, value); // } else if (allowPostCreate) { // setProperty(attribute, value); // } else { // error(attribute, String.valueOf(value), allowPostCreate); // } // } // // public void setAttribute(String attribute, Date value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, value); // } else if (allowPostCreate) { // setProperty(attribute, JSOHelper.convertToJavaScriptDate(value)); // } else { // error(attribute, String.valueOf(value), allowPostCreate); // } // } // // public void setAttribute(String attribute, ValueEnum[] value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, value); // } else if (allowPostCreate) { // setProperty(attribute, JSOHelper.convertToJavaScriptArray(value)); // } else { // error(attribute, String.valueOf(value), allowPostCreate); // } // } // // public void setAttribute(String attribute, DataClass value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, value.getJsObj()); // } else if (allowPostCreate) { // setProperty(attribute, value.getJsObj()); // } else { // error(attribute, String.valueOf(value), allowPostCreate); // } // } // // public void setAttribute(String attribute, JavaScriptObject value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, value); // } else if (allowPostCreate) { // setProperty(attribute, value); // } else { // error(attribute, String.valueOf(value), allowPostCreate); // } // } // // public void setAttribute(String attribute, String[] value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, JSOHelper.convertToJavaScriptArray(value)); // } else if (allowPostCreate) { // setProperty(attribute, JSOHelper.convertToJavaScriptArray(value)); // } else { // error(attribute, String.valueOf(value), allowPostCreate); // } // } // // protected void setAttribute(String attribute, boolean value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, value); // } else if (allowPostCreate) { // setProperty(attribute, value); // } else { // error(attribute, String.valueOf(value), allowPostCreate); // } // } // // public void setAttribute(String attribute, Element value, boolean allowPostCreate) { // if (!isCreated()) { // JSOHelper.setAttribute(config, attribute, value); // } else if (allowPostCreate) { // setProperty(attribute, value); // } else { // error(attribute, String.valueOf(value), allowPostCreate); // } // } // // public native void setProperty(String property, String value)/*-{ // var self = this.@com.smartgwt.client.core.BaseClass::getJsObj()(); // self.setProperty(property, value); // }-*/; // // public native void setProperty(String property, boolean value)/*-{ // var self = this.@com.smartgwt.client.core.BaseClass::getJsObj()(); // self.setProperty(property, value); // }-*/; // // public native void setProperty(String property, double value)/*-{ // var self = this.@com.smartgwt.client.core.BaseClass::getJsObj()(); // self.setProperty(property, value); // }-*/; // // public native void setProperty(String property, JavaScriptObject value)/*-{ // var self = this.@com.smartgwt.client.core.BaseClass::getJsObj()(); // self.setProperty(property, value); // }-*/; // // //event handling ode // private HandlerManager manager = null; // // public void fireEvent(GwtEvent<?> event) { // if (manager != null) { // manager.fireEvent(event); // } // } // // protected final <H extends EventHandler> HandlerRegistration doAddHandler( // final H handler, GwtEvent.Type<H> type) { // return ensureHandlers().addHandler(type, handler); // } // // /** // * Ensures the existence of the handler manager. // * // * @return the handler manager // **/ // HandlerManager ensureHandlers() { // return manager == null ? manager = new HandlerManager(this) // : manager; // } // // HandlerManager getManager() { // return manager; // } // // public int getHandlerCount(GwtEvent.Type<?> type) { // return manager == null? 0 : manager.getHandlerCount(type); // } // ------------ Vaadin integration methods private static final long serialVersionUID = 1L; protected Map<String, Object> attributes = new HashMap<String, Object>(); private boolean isCreated = false; public Object getOrCreateJsObj() { return this; } protected boolean isCreated() { return isCreated; } public void setAttribute(String attribute, Object value, boolean allowPostCreate) { if (isCreated() && !allowPostCreate) { throw new IllegalArgumentException("Cannot modify property " + attribute + " once created"); } attributes.put(attribute, value); } public void setAttribute(String attribute, Object value) { setAttribute(attribute, value, true); } public String getAttributeAsString(String attribute) { Object value = attributes.get(attribute); if (value == null) return null; else return value.toString(); } public String getAttribute(String attribute) { return getAttributeAsString(attribute); } public Integer getAttributeAsInt(String attribute) { Object value = attributes.get(attribute); if (value == null) return null; else return Integer.valueOf(value.toString()); } public Boolean getAttributeAsBoolean(String attribute) { Object value = attributes.get(attribute); if (value == null) return null; else return Boolean.valueOf(value.toString()); } public Double getAttributeAsDouble(String attribute) { Object value = attributes.get(attribute); if (value == null) return null; else return Double.valueOf(value.toString()); } public Float getAttributeAsFloat(String attribute) { Object value = attributes.get(attribute); if (value == null) return null; else return Float.valueOf(value.toString()); } public Map<?, ?> getAttributeAsMap(String attribute) { Object value = attributes.get(attribute); if (value == null) return null; else return (Map<?, ?>) value; } public Date getAttributeAsDate(String attribute) { Object value = attributes.get(attribute); if (value == null) return null; else { DateFormat df = new SimpleDateFormat(); try { Date d = df.parse(value.toString()); return d; } catch (Exception e) { e.printStackTrace(); } } return null; } public String[] getAttributeAsStringArray(String attribute) { Object value = attributes.get(attribute); if (value == null) return null; else return (String[]) value; } public String[] getAttributeAsJava(String attribute) { Object value = attributes.get(attribute); if (value == null) return null; else return (String[]) value; } @Override public void paintContent(PaintTarget target) throws PaintException { for (Map.Entry<String, Object> entry : attributes.entrySet()) { Object value = entry.getValue(); String name = entry.getKey(); if (value == null) target.addAttribute(name, "null"); else if (value instanceof Boolean) { target.addAttribute(name, "b" + String.valueOf(value)); } else if (value instanceof Integer) { target.addAttribute(name, "i" + String.valueOf(value)); } else if (value instanceof Float) { target.addAttribute(name, "f" + String.valueOf(value)); } else if (value instanceof Long) { target.addAttribute(name, "l" + String.valueOf(value)); } else if (value instanceof Double) { target.addAttribute(name, "d" + String.valueOf(value)); } else if (value instanceof String) { target.addAttribute(name, "s" + String.valueOf(value)); } } // Since the paint is finished, set the created attribute isCreated = true; } }