1 files changed, 106 insertions, 0 deletions
diff --git a/orkweb/src/net/sf/oreka/tapestry/TablePaging.java b/orkweb/src/net/sf/oreka/tapestry/TablePaging.java
new file mode 100644
index 0000000..e401543
--- /dev/null
+++ b/orkweb/src/net/sf/oreka/tapestry/TablePaging.java
@@ -0,0 +1,106 @@
+/*
+ * Oreka -- A media capture and retrieval platform
+ * 
+ * Copyright (C) 2005, orecx LLC
+ *
+ * http://www.orecx.com
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License.
+ * Please refer to http://www.gnu.org/copyleft/gpl.html
+ *
+ */
+
+/**
+ * 
+ */
+package net.sf.oreka.tapestry;
+
+import java.util.*;
+import org.apache.log4j.*;
+import org.apache.tapestry.*;
+
+
+public abstract class TablePaging extends BaseComponent {
+	
+	static Logger logger = Logger.getLogger(TablePaging.class);
+	
+	public abstract TableState getTableState();
+	public abstract void setTableState(TableState state);
+
+	Integer sliderPosition;
+	
+	public void firstPageAction(IRequestCycle cycle) {
+		getTableState().setNumResults(0);
+		setTableState(getTableState());	// persist !
+	}
+
+	public void previousPageAction(IRequestCycle cycle) {
+		TableState ps = getTableState();
+		if ( (ps.getCurrentOffset() - ps.getResultsPerPage()) >= 0 ) {
+			ps.setCurrentOffset(ps.getCurrentOffset() - ps.getResultsPerPage());
+		}		
+		setTableState(getTableState());	// persist !
+	}
+	
+	public void nextPageAction(IRequestCycle cycle) {
+		  //logger.log(Level.INFO, "before:" + getPagingState().getCurrentPage());
+		  //getPagingState().setCurrentPage(getPagingState().getCurrentPage()+1);
+		  //logger.log(Level.INFO, "after:" + getPagingState().getCurrentPage());
+		
+		TableState ps = getTableState();
+		if ( (ps.getCurrentOffset() + ps.getResultsPerPage()) <  ps.getNumResults() ) {
+			ps.setCurrentOffset(ps.getCurrentOffset() + ps.getResultsPerPage());
+		}
+		setTableState(getTableState());	// persist !
+	 }
+	
+	public void lastPageAction(IRequestCycle cycle) {
+		
+		TableState ps = getTableState();
+		double numPages = (double)ps.getNumResults() / ps.getResultsPerPage();
+		numPages = java.lang.Math.ceil(numPages);
+		//int numWholePages = ps.getNumResults() / ps.getResultsPerPage();
+		//int remainder = ps.getNumResults() % ps.getResultsPerPage();
+		//int lastPageOffset = 0;
+		//if (remainder > 0) {
+		//	lastPageOffset = numWholePages * ps.getResultsPerPage();
+		//}
+		//else if (numWholePages > 0){
+		//	lastPageOffset = (numWholePages - 1) * ps.getResultsPerPage();
+		//}
+		int lastPageOffset = 0;
+		if (numPages >= 1) {
+			lastPageOffset = (int)(numPages-1) * ps.getResultsPerPage();
+		}
+		ps.setCurrentOffset(lastPageOffset);
+		setTableState(getTableState());	// persist !
+	}
+	
+	public void sliderClickAction(IRequestCycle cycle) {
+		
+        Object[] parameters = cycle.getServiceParameters();
+		Integer sliderPosition = (Integer)parameters[0];
+		
+		TableState ts = getTableState();
+		ts.setSliderPosition(sliderPosition);
+		double newOffset = ((double)ts.getNumResults() / getSliderPositions().size()) * sliderPosition.intValue();
+		ts.setCurrentOffset((int)newOffset);
+		logger.log(Level.INFO, "Slider: pos:" + sliderPosition.intValue() + " offset:" + newOffset);
+		setTableState(getTableState());	// persist !
+	}	
+	
+	/**
+	 * @return Returns the sliderPositions.
+	 */
+	public List getSliderPositions() {
+		
+		ArrayList sliderPositions = new ArrayList();
+		int numPositions = java.lang.Math.min(getTableState().getNumPages(), 20);
+		for(int i=0;i<numPositions;i++) {
+			sliderPositions.add(new Integer(i));
+		}
+		return sliderPositions;
+	}
+	
+}