dk.teachus.frontend.components.Toolbar.java Source code

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Here is the source code for dk.teachus.frontend.components.Toolbar.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 dk.teachus.frontend.components;

import java.io.Serializable;
import java.util.List;

import org.apache.wicket.AttributeModifier;
import org.apache.wicket.Page;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.link.BookmarkablePageLink;
import org.apache.wicket.markup.html.link.Link;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.markup.repeater.RepeatingView;
import org.apache.wicket.model.AbstractReadOnlyModel;
import org.apache.wicket.request.mapper.parameter.PageParameters;

public class Toolbar extends Panel {
    private static final long serialVersionUID = 1L;

    public Toolbar(String id, List<ToolbarItemInterface> items) {
        super(id);

        RepeatingView itemsContainer = new RepeatingView("items"); //$NON-NLS-1$
        add(itemsContainer);

        for (final ToolbarItemInterface item : items) {
            WebMarkupContainer itemContainer = new WebMarkupContainer(itemsContainer.newChildId());
            itemsContainer.add(itemContainer);

            Link<Void> link = null;
            if (item instanceof ToolbarItem) {
                final ToolbarItem toolbarItem = (ToolbarItem) item;
                link = new Link<Void>("link") {
                    private static final long serialVersionUID = 1L;

                    @Override
                    public void onClick() {
                        toolbarItem.onEvent();
                    }
                };
            } else if (item instanceof BookmarkableToolbarItem) {
                BookmarkableToolbarItem bookmarkableToolbarItem = (BookmarkableToolbarItem) item;
                link = new BookmarkablePageLink<Void>("link", bookmarkableToolbarItem.getPageClass(),
                        bookmarkableToolbarItem.getPageParameters());
            } else {
                throw new IllegalArgumentException("Toolbar item not supported: " + item.getClass().getName());
            }

            link.add(AttributeModifier.append("class", new AbstractReadOnlyModel<String>() {
                private static final long serialVersionUID = 1L;

                @Override
                public String getObject() {
                    if (item.isCurrent(Toolbar.this.getPage())) {
                        return "btn-primary disabled";
                    }

                    return null;
                }
            }));
            itemContainer.add(link);
            link.add(new Label("label", item.getLabel()).setRenderBodyOnly(true)); //$NON-NLS-1$
        }
    }

    public static interface ToolbarItemInterface extends Serializable {
        String getLabel();

        boolean isCurrent(Page page);
    }

    private abstract static class AbstractToolbarItem implements ToolbarItemInterface {
        private static final long serialVersionUID = 1L;

        private String label;

        public AbstractToolbarItem(String label) {
            this.label = label;
        }

        public String getLabel() {
            return label;
        }

        public void setLabel(String label) {
            this.label = label;
        }

        public abstract boolean isCurrent(Page page);
    }

    public abstract static class ToolbarItem extends AbstractToolbarItem {
        private static final long serialVersionUID = 1L;

        private boolean current;

        public ToolbarItem(String label) {
            super(label);
        }

        public ToolbarItem(String label, boolean current) {
            super(label);
            this.current = current;
        }

        public boolean isCurrent(Page page) {
            return current;
        }

        public void setCurrent(boolean current) {
            this.current = current;
        }

        public abstract void onEvent();
    }

    public static class BookmarkableToolbarItem extends AbstractToolbarItem {
        private static final long serialVersionUID = 1L;

        private Class<? extends Page> pageClass;
        private PageParameters pageParameters;

        public BookmarkableToolbarItem(String label, Class<? extends Page> pageClass) {
            super(label);
            this.pageClass = pageClass;
        }

        public BookmarkableToolbarItem(String label, Class<? extends Page> pageClass,
                PageParameters pageParameters) {
            super(label);
            this.pageClass = pageClass;
            this.pageParameters = pageParameters;
        }

        public Class<? extends Page> getPageClass() {
            return pageClass;
        }

        public PageParameters getPageParameters() {
            return pageParameters;
        }

        @Override
        public boolean isCurrent(Page page) {
            return pageClass.isInstance(page);
        }

    }

}