AbstractIconRenderer.java

/*
 * Copyright 2017 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.kie.workbench.common.stunner.client.widgets.palette.factory.icons;

import org.jboss.errai.common.client.dom.HTMLElement;
import org.uberfire.commons.validation.PortablePreconditions;

public abstract class AbstractIconRenderer<T, V extends IconRendererView> implements IconRenderer<T> {

    protected Size size = Size.LARGE;

    protected IconResource<T> iconResource;

    protected V view;

    public AbstractIconRenderer(V view) {
        this.view = view;
        view.init(this);
    }

    @Override
    public void render(IconResource<T> resource) {
        render(resource,
               size);
    }

    @Override
    public void render(IconResource<T> resource,
                       Size size) {
        PortablePreconditions.checkNotNull("resource",
                                           resource);
        PortablePreconditions.checkNotNull("size",
                                           size);
        this.iconResource = resource;
        this.size = size;
        view.render();
    }

    @Override
    public void resize(Size size) {
        PortablePreconditions.checkNotNull("size",
                                           size);
        this.size = size;
        view.resize();
    }

    @Override
    public HTMLElement getElement() {
        return view.getElement();
    }

    @Override
    public Size getSize() {
        return size;
    }

    @Override
    public IconResource<T> getIconResource() {
        return iconResource;
    }
}