AbstractAdminSystemPageModContentFactoryImpl.java
/*
* Copyright 2014 James Pether Sörling
*
* 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.
*
* $Id$
* $HeadURL$
*/
package com.hack23.cia.web.impl.ui.application.views.admin.system.pagemode;
import com.hack23.cia.web.impl.ui.application.views.common.pagemode.AbstractPageModContentFactoryImpl;
import com.hack23.cia.web.impl.ui.application.views.common.sizing.ContentRatio;
import com.vaadin.ui.AbstractOrderedLayout;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.Link;
/**
* The Class AbstractAdminSystemPageModContentFactoryImpl.
*/
abstract class AbstractAdminSystemPageModContentFactoryImpl extends AbstractPageModContentFactoryImpl {
/** The Constant LIMIT_FOR_DISPLAYING_START_END_LINKS. */
private static final int LIMIT_FOR_DISPLAYING_START_END_LINKS = 5;
/** The Constant PAGE_ONE. */
private static final int PAGE_ONE = 1;
/** The Constant PAGE_SEPARATOR. */
private static final char PAGE_SEPARATOR = '/';
/** The Constant SHOW. */
private static final String SHOW = " :: Show ";
/** The Constant RESULTS_PER_PAGE. */
private static final String RESULTS_PER_PAGE = " results per page:";
/** The Constant PAGES_TOTAL_RESULTS. */
private static final String PAGES_TOTAL_RESULTS = " pages. Total results:";
/** The Constant PAGE_HEADER. */
private static final String PAGE_HEADER = "Page: ";
/** The Constant NEXT_PAGE. */
private static final String NEXT_PAGE = "next page";
/** The Constant FIRST_PAGE. */
private static final String FIRST_PAGE = "first page";
/** The Constant LAST_PAGE. */
private static final String LAST_PAGE = "last page";
/** The Constant PREVIOUS_PAGE. */
private static final String PREVIOUS_PAGE = "previous page";
/** The Constant DEFAULT_RESULTS_PER_PAGE. */
public static final int DEFAULT_RESULTS_PER_PAGE=250;
/**
* Instantiates a new abstract admin system page mod content factory impl.
*/
AbstractAdminSystemPageModContentFactoryImpl() {
super();
}
/**
* Creates the paging controls.
*
* @param content
* the content
* @param name
* the name
* @param pageId
* the page id
* @param size
* the size
* @param pageNr
* the page nr
* @param resultPerPage
* the result per page
*/
protected final void createPagingControls(final AbstractOrderedLayout content,final String name,final String pageId, final Long size, final int pageNr, final int resultPerPage) {
final HorizontalLayout pagingControls = new HorizontalLayout();
pagingControls.setSpacing(true);
pagingControls.setMargin(true);
final int maxPages = (int) ((size +(resultPerPage-1)) / resultPerPage);
final StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append(PAGE_HEADER)
.append(pageNr)
.append(PAGE_SEPARATOR)
.append(maxPages)
.append(PAGES_TOTAL_RESULTS)
.append(size)
.append(RESULTS_PER_PAGE)
.append(resultPerPage)
.append(SHOW);
final Label pageInfo = new Label(stringBuilder.toString());
pagingControls.addComponent(pageInfo);
pagingControls.setExpandRatio(pageInfo, ContentRatio.SMALL);
if (pageNr > PAGE_ONE) {
addPagingLink(PREVIOUS_PAGE,name, pageId, pageNr -1,pagingControls);
}
if (maxPages > PAGE_ONE && pageNr < maxPages) {
addPagingLink(NEXT_PAGE,name, pageId, pageNr +1,pagingControls);
}
if (maxPages > LIMIT_FOR_DISPLAYING_START_END_LINKS && pageNr > PAGE_ONE) {
addPagingLink(FIRST_PAGE,name, pageId, 1,pagingControls);
}
if (maxPages > LIMIT_FOR_DISPLAYING_START_END_LINKS && pageNr < maxPages) {
addPagingLink(LAST_PAGE,name, pageId, maxPages,pagingControls);
}
content.addComponent(pagingControls);
content.setExpandRatio(pagingControls, ContentRatio.SMALL2);
}
/**
* Adds the paging link.
*
* @param label
* the label
* @param name
* the name
* @param pageId
* the page id
* @param pageNr
* the page nr
* @param pagingControls
* the paging controls
*/
private void addPagingLink(final String label,final String name, final String pageId, final int pageNr, final HorizontalLayout pagingControls) {
final Link previousPageLink = getPageLinkFactory().createAdminPagingLink(label,name, pageId, String.valueOf(pageNr));
pagingControls.addComponent(previousPageLink);
pagingControls.setExpandRatio(previousPageLink, ContentRatio.SMALL);
}
}