Java tutorial
/* Copyright (c) 2017 Ahome' Innovation Technologies. All rights reserved. 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.ait.lienzo.client.core.palette; import com.ait.lienzo.client.core.config.LienzoCore; import com.ait.lienzo.client.core.shape.Attributes; import com.ait.lienzo.client.core.shape.json.AbstractFactory; import com.ait.lienzo.client.core.shape.json.IFactory; import com.ait.lienzo.client.core.shape.json.IJSONSerializable; import com.ait.lienzo.client.core.shape.json.validators.ValidationContext; import com.ait.lienzo.client.core.shape.json.validators.ValidationException; import com.ait.lienzo.shared.core.types.PaletteType; import com.ait.tooling.nativetools.client.NObjectJSO; import com.ait.tooling.nativetools.client.collection.MetaData; import com.google.gwt.core.client.JavaScriptObject; import com.google.gwt.json.client.JSONObject; import com.google.gwt.json.client.JSONString; import com.google.gwt.json.client.JSONValue; public abstract class AbstractPaletteBase<T extends AbstractPaletteBase<T>> implements IJSONSerializable<T> { private final MetaData m_meta; private final Attributes m_attr; private final PaletteType m_type; protected AbstractPaletteBase(final PaletteType type) { m_type = type; m_meta = new MetaData(); m_attr = new Attributes(this); } protected AbstractPaletteBase(final PaletteType type, final JSONObject node, final ValidationContext ctx) throws ValidationException { m_type = type; if (null == node) { m_attr = new Attributes(this); m_meta = new MetaData(); return; } JSONValue aval = node.get("attributes"); if (null == aval) { m_attr = new Attributes(this); } else { JSONObject aobj = aval.isObject(); if (null == aobj) { m_attr = new Attributes(this); } else { JavaScriptObject ajso = aobj.getJavaScriptObject(); if (null == ajso) { m_attr = new Attributes(this); } else { m_attr = new Attributes(ajso, this); } } } JSONValue mval = node.get("meta"); if (null == mval) { m_meta = new MetaData(); } else { JSONObject mobj = mval.isObject(); if (null == mobj) { m_meta = new MetaData(); } else { JavaScriptObject mjso = mobj.getJavaScriptObject(); if (null == mjso) { m_meta = new MetaData(); } else { NObjectJSO jso = mjso.cast(); m_meta = new MetaData(jso); } } } } public final MetaData getMetaData() { return m_meta; } public final Attributes getAttributes() { return m_attr; } @Override public final String toJSONString() { return toJSONObject().toString(); } @Override public JSONObject toJSONObject() { JSONObject object = new JSONObject(); object.put("type", new JSONString(m_type.getValue())); if (false == getMetaData().isEmpty()) { object.put("meta", new JSONObject(getMetaData().getJSO())); } object.put("attributes", new JSONObject(getAttributes().getJSO())); return object; } @Override public IFactory<?> getFactory() { return LienzoCore.get().getFactory(m_type); } protected abstract static class AbstractPalettebaseFactory<T extends AbstractPaletteBase<T>> extends AbstractFactory<T> { protected AbstractPalettebaseFactory(final PaletteType type) { super(type.getValue()); } } }