com.cgxlib.xq.client.css.CssProperty.java Source code

Introduction

Here is the source code for com.cgxlib.xq.client.css.CssProperty.java

Source

/*
 * Copyright 2011, The gwtquery team.
 *
 * 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.cgxlib.xq.client.css;

/*
 * #%L
 * CGXlib
 * %%
 * Copyright (C) 2016 CGXlib (http://www.cgxlib.com)
 * %%
 * 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.
 * #L%
  Code is originally from gwtquery, and modified by CGXlib team.
 */

import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.Style;
import com.google.gwt.dom.client.Style.HasCssName;

/**
 * Base class for Css property.
 *
 * @param <T> Class of the value associated with the css property
 */
public class CssProperty<T extends HasCssName> implements TakesCssValue<T> {

    private String cssName;

    protected CssProperty(String cssName) {
        this.cssName = cssName;
    }

    public String getCssName() {
        return cssName;
    }

    public String getCssValue(Style s) {
        return s.getProperty(getCssName());
    }

    public CssSetter with(T value) {
        return new CssSetterImpl(value);
    }

    protected void set(Style s, T value) {
        s.setProperty(getCssName(), value != null ? value.getCssName() : "");
    }

    /**
     * CssSetterImpl.
     */
    protected class CssSetterImpl implements CssSetter {

        private T cssValue;

        public CssSetterImpl(T cssValue) {

            this.cssValue = cssValue;
        }

        public void applyCss(Element e) {
            assert e != null : "Impossible to apply css to a null object";
            set(e.getStyle(), cssValue);
        }
    }
}