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[Openutils-svn] SF.net SVN: openutils:[2270] trunk/openutils-mgnlutils/src/main
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From: <fg...@us...> - 2010-04-04 17:27:49
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Revision: 2270
http://openutils.svn.sourceforge.net/openutils/?rev=2270&view=rev
Author: fgiust
Date: 2010-04-04 17:27:43 +0000 (Sun, 04 Apr 2010)
Log Message:
-----------
MGNLUTILS-13 new EL function for handling pagination
Modified Paths:
--------------
trunk/openutils-mgnlutils/src/main/resources/META-INF/tld/mgnlutils.tld
Added Paths:
-----------
trunk/openutils-mgnlutils/src/main/java/it/openutils/mgnlutils/el/MgnlPagingElFunctions.java
Added: trunk/openutils-mgnlutils/src/main/java/it/openutils/mgnlutils/el/MgnlPagingElFunctions.java
===================================================================
--- trunk/openutils-mgnlutils/src/main/java/it/openutils/mgnlutils/el/MgnlPagingElFunctions.java (rev 0)
+++ trunk/openutils-mgnlutils/src/main/java/it/openutils/mgnlutils/el/MgnlPagingElFunctions.java 2010-04-04 17:27:43 UTC (rev 2270)
@@ -0,0 +1,268 @@
+/**
+ *
+ * Magnolia generic utilities (http://www.openmindlab.com/lab/products/mgnlutils.html)
+ * Copyright(C) 2009-2010, Openmind S.r.l. http://www.openmindonline.it
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package it.openutils.mgnlutils.el;
+
+import info.magnolia.context.MgnlContext;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.commons.lang.StringUtils;
+import org.apache.commons.lang.math.NumberUtils;
+import org.apache.commons.lang.builder.ToStringBuilder;
+import org.apache.commons.lang.builder.ToStringStyle;
+
+
+/**
+ * @author fgiust
+ * @version $Id$
+ */
+public class MgnlPagingElFunctions
+{
+
+ /**
+ * Creates a list of Page objects that can be used to draw a pagination bar.
+ * @param total total number of pages
+ * @param visible maximum number of pages to show
+ * @param param name of the request parameter that will hold the current page number
+ * @return List of Page objects
+ */
+ public static List<Page> pageList(int total, int visible, String param)
+ {
+
+ Map<String, String> parameters = MgnlContext.getParameters();
+
+ StringBuffer sb = new StringBuffer();
+ sb.append("?");
+ boolean first = true;
+ for (Map.Entry<String, String> entry : parameters.entrySet())
+ {
+ if (!StringUtils.equals(entry.getKey(), param))
+ {
+ if (!first)
+ {
+ sb.append("&");
+ }
+ sb.append(entry.getKey());
+ sb.append("=");
+ sb.append(entry.getValue());
+ first = false;
+ }
+ }
+
+ if (!first)
+ {
+ sb.append("&");
+ }
+ sb.append(param);
+ sb.append("=");
+
+ String baseUrl = sb.toString();
+
+ List<Page> result = new ArrayList<Page>();
+
+ int current = Math.max(1, NumberUtils.toInt(MgnlContext.getParameter(param), 1));
+
+ // center pages
+ int start = Math.max(1, Math.min(current - visible / 2, total - visible + 1));
+ int end = Math.min(start + visible, total);
+
+ Page page = new Page(1, current == 1, baseUrl);
+ page.setLabel("««");
+ page.setActive(current != 1);
+ result.add(page);
+ page.setCssclass("page-first");
+
+ int previous = Math.max(current - 1, 1);
+ page = new Page(previous, current == previous, baseUrl);
+ page.setLabel("«");
+ page.setActive(current != previous);
+ result.add(page);
+ page.setCssclass("page-previous");
+
+ for (int j = start; j <= end; j++)
+ {
+ page = new Page(j, current == j, baseUrl);
+ page.setLabel(Integer.toString(j));
+ page.setCssclass("page-numbered");
+ result.add(page);
+ }
+
+ int next = Math.min(current + 1, total);
+ page = new Page(next, current == next, baseUrl);
+ page.setLabel("»");
+ page.setActive(current != next);
+ page.setCssclass("page-next");
+ result.add(page);
+
+ page = new Page(total, current == total, baseUrl);
+ page.setLabel("»»");
+ page.setActive(current != total);
+ page.setCssclass("page-last");
+ result.add(page);
+
+ return result;
+ }
+
+ public static class Page
+ {
+
+ private int number;
+
+ boolean current;
+
+ private String url;
+
+ private String label;
+
+ private boolean active;
+
+ private String cssclass;
+
+ /**
+ * @param number
+ * @param active
+ * @param baseurl
+ */
+ public Page(int number, boolean current, String baseurl)
+ {
+ this.number = number;
+ this.current = current;
+ this.url = baseurl;
+ active = true;
+ }
+
+ /**
+ * Returns the number.
+ * @return the number
+ */
+ public int getNumber()
+ {
+ return number;
+ }
+
+ /**
+ * Sets the number.
+ * @param number the number to set
+ */
+ public void setNumber(int number)
+ {
+ this.number = number;
+ }
+
+ /**
+ * Returns the current.
+ * @return the current
+ */
+ public boolean isCurrent()
+ {
+ return current;
+ }
+
+ /**
+ * Sets the current.
+ * @param current the current to set
+ */
+ public void setCurrent(boolean current)
+ {
+ this.current = current;
+ }
+
+ /**
+ * Returns the url.
+ * @return the url
+ */
+ public String getUrl()
+ {
+ return url + this.number;
+ }
+
+ /**
+ * Returns the label.
+ * @return the label
+ */
+ public String getLabel()
+ {
+ return label;
+ }
+
+ /**
+ * Sets the label.
+ * @param label the label to set
+ */
+ public void setLabel(String label)
+ {
+ this.label = label;
+ }
+
+ /**
+ * Returns the active.
+ * @return the active
+ */
+ public boolean isActive()
+ {
+ return active;
+ }
+
+ /**
+ * Sets the active.
+ * @param active the active to set
+ */
+ public void setActive(boolean active)
+ {
+ this.active = active;
+ }
+
+ /**
+ * Returns the cssclass.
+ * @return the cssclass
+ */
+ public String getCssclass()
+ {
+ return cssclass;
+ }
+
+ /**
+ * Sets the cssclass.
+ * @param cssclass the cssclass to set
+ */
+ public void setCssclass(String cssclass)
+ {
+ this.cssclass = cssclass;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public String toString()
+ {
+ return new ToStringBuilder(this, ToStringStyle.SIMPLE_STYLE)
+ .append("number", this.number)
+ .append("url", this.url)
+ .append("active", this.active)
+ .append("current", this.current)
+ .append("label", this.label)
+ .append("cssclass", this.cssclass)
+ .toString();
+ }
+ }
+}
Property changes on: trunk/openutils-mgnlutils/src/main/java/it/openutils/mgnlutils/el/MgnlPagingElFunctions.java
___________________________________________________________________
Added: svn:mime-type
+ text/plain
Added: svn:keywords
+ Author Date Id Revision
Added: svn:eol-style
+ native
Modified: trunk/openutils-mgnlutils/src/main/resources/META-INF/tld/mgnlutils.tld
===================================================================
--- trunk/openutils-mgnlutils/src/main/resources/META-INF/tld/mgnlutils.tld 2010-04-04 17:12:44 UTC (rev 2269)
+++ trunk/openutils-mgnlutils/src/main/resources/META-INF/tld/mgnlutils.tld 2010-04-04 17:27:43 UTC (rev 2270)
@@ -248,4 +248,21 @@
<function-class>it.openutils.mgnlutils.el.MgnlUtilsElFunctions</function-class>
<function-signature>java.util.Collection contentChildrenOfType(info.magnolia.cms.core.Content, java.lang.String)</function-signature>
</function>
-</taglib>
+ <function>
+ <name>pageList</name>
+ <description>Creates a list of Page objects that can be used to draw a pagination bar.
+ Takes as parameters the total number of pages, the maximum number of pages to show and the name of the request parameter that will hold the current page number</description>
+ <function-class>it.openutils.mgnlutils.el.MgnlPagingElFunctions</function-class>
+ <function-signature>java.util.List pageList(int, int, java.lang.String)</function-signature>
+ <example><![CDATA[
+ <c:set var="pageList" value="${mu:pageList(numPages, maxPages, 'page')}" />
+ <ul class="paging">
+ <c:forEach var="page" items="${pageList}">
+ <li class="page-current-${page.current} page-active-${page.active} ${page.cssclass}">
+ <a href="${page.url}">${page.label}</a>
+ </li>
+ </c:forEach>
+ </ul>
+ ]]></example>
+ </function>
+</taglib>
\ No newline at end of file
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