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    • de.jwic.controls.tableviewer.FixColumnTableRenderer Maven / Gradle / Ivy

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    /*******************************************************************************
 * Copyright 2015 xWic group (http://www.xwic.de)
 *
 * 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 de.jwic.controls.tableviewer;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.logging.LogFactory;

import de.jwic.base.Control;
import de.jwic.base.Field;
import de.jwic.base.IControlRenderer;
import de.jwic.base.ImageRef;
import de.jwic.base.JWicRuntime;
import de.jwic.base.RenderContext;
import de.jwic.data.IContentProvider;
import de.jwic.data.Range;

/**
 * Default implementation of the ITableRenderer interface. The default renderer
 * generates HTML "by code", without using templates. The reason for this is 
 * because its faster, costs less resources and the generated HTML is quite
 * complex so that templates would be quite ugly anyway.
 * 
 * @author Jens Bornemann
 */
public class FixColumnTableRenderer extends DefaultTableRenderer {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	protected int fixColumn = 0;
	protected boolean reuseContent = true;

	/* (non-Javadoc)
	 * @see de.jwic.ecolib.tableviewer.ITableRenderer#renderTable(de.jwic.base.RenderContext, de.jwic.ecolib.tableviewer.TableViewer, de.jwic.ecolib.tableviewer.TableModel)
	 */
	@SuppressWarnings("unused")
	public void renderTable(RenderContext renderContext, TableViewer viewer, TableModel model, ITableLabelProvider labelProvider) {
		
		if (!viewer.isScrollable() || fixColumn < 0) {
			super.renderTable(renderContext, viewer, model, labelProvider);
			return;
		}

		String tblvWebPath = JWicRuntime.getJWicRuntime().getContextPath() + "/ecolib/tblviewer/";
		
		PrintWriter writer = renderContext.getWriter();
		
		IContentProvider contentProvider = model.getContentProvider();
		
		int tblWidth = 0;
		for (Iterator it = model.getColumnIterator(); it.hasNext(); ) {
			TableColumn tc = it.next();
			if (!tc.isVisible()) {
				continue;
			}
			tblWidth += tc.getWidth();
		}
		
		int defaultColumnWidth = 150;
		// TODO use defined css border width instead of this fixed one...
		int leftWidth = (fixColumn + 1) * 2;
		{
			int c = 0;
			for (Iterator itC = model.getColumnIterator(); itC.hasNext(); ) {
				TableColumn column = itC.next();
				if (c++ > fixColumn || !column.isVisible()) {
					break;
				}
				int width = column.getWidth() != 0 ? column.getWidth() : defaultColumnWidth;
				leftWidth += width;
			}
		}
		int rightWidth = viewer.getWidth() != 0 ? viewer.getWidth() - leftWidth : 0;

		// Add resizer div 
		if (viewer.isResizeableColumns()) {
			writer.print("
    ");
		}
		
		// render main table.
		writer.print("");
		writer.print("
    ");
		
		// render data table.
		String divHeight = viewer.getHeight() != 0 ? 
				(viewer.isShowStatusBar() ? viewer.getHeight() - 18 : viewer.getHeight() ) + "px" 
				: "100%";
		String divWidth = viewer.getWidth() != 0 ? viewer.getWidth() + "px" : "100%";
		
		// main table content DIV
		writer.print("
    ");
		
		StringWriter leftHtml = new StringWriter();
		PrintWriter leftWriter = new PrintWriter(leftHtml);
		StringWriter rightHtml = new StringWriter();
		PrintWriter rightWriter = new PrintWriter(rightHtml);
		
		writer = leftWriter;
		String tblView = "tblViewLeft";
		for (int i = 0; i < 2; i++) {
			
			boolean right = i == 1;
			int dataWidth = leftWidth; 
			if (right && writer != rightWriter) {
				writer = rightWriter;
				tblView = "tblView";
				dataWidth = rightWidth;				
			}
			if (dataWidth == 0) {
				dataWidth = 300;
			}
		
			if (viewer.isShowHeader()) {
				writer.print("
    ");
			}
			
			// create required table attributes.
			StringBuffer sbTblSelAttrs = new StringBuffer();
			switch (model.getSelectionMode()) {
			case TableModel.SELECTION_SINGLE: {
				String clearKey = model.getFirstSelectedKey();
				if (clearKey == null) {
					clearKey = "";
				}
				sbTblSelAttrs.append(" tbvSelKey=\"" + clearKey + "\"");
				sbTblSelAttrs.append(" tbvSelMode=\"single\"");
				break;
			}
			case TableModel.SELECTION_MULTI: {
				sbTblSelAttrs.append(" tbvSelKey=\"\"");
				sbTblSelAttrs.append(" tbvSelMode=\"multi\"");
				break;
			}
			default: {
				sbTblSelAttrs.append(" tbvSelKey=\"\"");
				sbTblSelAttrs.append(" tbvSelMode=\"none\"");
			}
			}
			
			if (viewer.isShowHeader()) {
			
				writer.print("");
			}
			
			// render HEADER columns
			if (viewer.isShowHeader()) {
				renderHeader(writer, model, viewer, tblvWebPath, right, dataWidth);
			}		
			// if scrollable, seperate the data table from the header
			// and render it within its own, scrollable DIV. Will only
			// look proper if the columns have a fixed width.
			
			int dataHeight = viewer.getHeight() != 0 ? viewer.getHeight() - (viewer.isShowHeader() ? 20 : 0): 200;
			if (viewer.isShowStatusBar()) {
				dataHeight -= 18;
			}
			if (viewer.isShowHeader()) {
				writer.println("
    "); } if (!right) { writer.print("
    "); writer.print(""); } else { writer.print("
    "); writer.print(""); } } // render table BODY leftWriter.print(""); rightWriter.print(""); int count = 0; try { writer = leftWriter; tblView = "tblViewLeft"; Range range = model.getRange(); if (range.getMax() == 0) { // = Auto int max = -1; int rowSpace = viewer.getHeight() - (35 + 20); // - header height + scroll bar height if (rowSpace != 0) { if (viewer.isShowStatusBar()) { rowSpace -= 18; } max = rowSpace / viewer.getRowHeightHint(); // if (max < 1) { max = 1; } model.setLastRenderedPageSize(max); } range = new Range(range.getStart(), max); } List list = null; if (reuseContent) { list = new ArrayList(); for (Iterator it = contentProvider.getContentIterator(range); it.hasNext();) { list.add(it.next()); } } for (int i = 0; i < 2; i++) { boolean right = i == 1; if (right && writer != rightWriter) { writer = rightWriter; tblView = "tblView"; } Iterator it = list != null ? list.iterator() : contentProvider.getContentIterator(model.getRange()); count = renderRows(0, false, writer, it, viewer, labelProvider, right, tblView); } } catch (Exception e) { writer.println("Error reading data from ContentProvider: " + e); log.error("Error reading data from ContentProvider", e); } model.setLastRowRenderCount(count); writer = leftWriter; for (int i = 0; i < 2; i++) { boolean right = i == 1; if (right && writer != rightWriter) { writer = rightWriter; } writer.print(""); writer.print(""); writer.print(""); } // finish left and right... leftWriter.close(); rightWriter.close(); writer = renderContext.getWriter(); writer.print("
    "); writer.print(leftHtml.toString()); writer.print(""); writer.print(rightHtml.toString()); writer.print("
    "); writer.println(""); // render STATUS BAR if (viewer.isShowStatusBar()) { writer.println(""); // render context Control sb = viewer.getControl("statusBar"); IControlRenderer renderer = JWicRuntime.getRenderer(sb.getRendererId()); renderer.renderControl(sb, renderContext); writer.print(""); } writer.println(""); // div to fix IE6 scrolling writer.print(""); // add scroll fields Field fldLeft = viewer.getField("left"); Field fldTop = viewer.getField("top"); writer.println(""); writer.println(""); writer.print(""); } /** * */ protected void renderHeader(PrintWriter writer, TableModel model, TableViewer viewer, String tblvWebPath, boolean right, int dataWidth) { boolean isResizable = viewer.isResizeableColumns() && viewer.isEnabled(); boolean isColSelectable = viewer.isSelectableColumns() && viewer.isEnabled(); writer.println(""); writer.println(""); int c = -1; for (Iterator itC = model.getColumnIterator(); itC.hasNext(); ) { TableColumn column = itC.next(); c++; if (!right) { if (c > fixColumn) { break; } } else { if (c <= fixColumn) { continue; } } if (!column.isVisible()) { continue; } if (isResizable && column.getWidth() == 0) { // must set a default width if resizeable columns is activated column.setWidth(150); } writer.print(" 0) { writer.print(" width=\"" + column.getWidth() + "\""); innerWidth = column.getWidth() - (viewer.isResizeableColumns() ? 5 : 0); innerWidth = innerWidth - (column.getSortIcon() != TableColumn.SORT_ICON_NONE ? 8 : 0); if (innerWidth < 3) { innerWidth = 3; } } writer.print(" colIdx=\"" + column.getIndex() + "\" "); //header tooltip if (column.getToolTip() != null && column.getToolTip().length() > 0) { writer.print(" title=\"" + column.getToolTip() + "\""); } writer.println(">"); // create cell table writer.print(""); writer.print(""); if (column.getSortIcon() != TableColumn.SORT_ICON_NONE) { ImageRef imgSort = null; switch (column.getSortIcon()) { case TableColumn.SORT_ICON_UP: imgSort = ICON_SORTUP; break; case TableColumn.SORT_ICON_DOWN: imgSort = ICON_SORTDOWN; break; } if (imgSort != null) { writer.print(""); } } if (isResizable) { writer.print(""); } writer.print("
    "); writer.print(""); if (column.getImage() != null) { writer.print(""); } writer.print(column.getTitle()); writer.print(""); writer.print(""); writer.print(""); writer.print(""); writer.print("
    "); writer.println(""); } // if the width is fixed, we must render an empty column at the end so that the // browser will not adjust the columns width if (dataWidth != 0 && right) { writer.print(" "); } writer.println(""); writer.println(""); } /** * @param writer * @param rootIterator */ @SuppressWarnings({ "unchecked", "rawtypes" }) protected int renderRows(int level, boolean hasNext, PrintWriter writer, Iterator it, TableViewer viewer, ITableLabelProvider labelProvider, boolean right, String tblView) { int expandIconWidth = getExpandIconWidth(); int expandIconHeight = getExpandIconHeight(); TableModel model = viewer.getModel(); IContentProvider contentProvider = model.getContentProvider(); int count = 0; while(it.hasNext()) { Object row = it.next(); count++; String key = contentProvider.getUniqueKey(row) ; boolean expanded = model.isExpanded(key); writer.print(""); int c = -1; for (Iterator itC = model.getColumnIterator(); itC.hasNext(); ) { TableColumn column = itC.next(); c++; if (!right) { if (c > fixColumn) { break; } } else { if (c <= fixColumn) { continue; } } if (!column.isVisible()) { continue; } CellLabel cell = labelProvider.getCellLabel(row, column, new RowContext(expanded, level)); writer.print(" 0) { writer.print(" width=\"" + column.getWidth() + "\""); } if (cell.cssClass != null) { writer.print(" class=\"" + cell.cssClass + "\""); } if (cell.toolTip != null && cell.toolTip.length() > 0) { writer.print(" title=\"" + cell.toolTip + "\""); } if (cell.colspan != null && cell.colspan.intValue() > 0) { writer.print(" colspan=\"" + cell.colspan + "\""); } writer.print(">"); boolean innerTable = column.getIndex() == viewer.getExpandableColumn() || cell.image != null && cell.text != null; //innerTable = true; if (innerTable) { writer.print("
    "); //writer.print("

    "); } // handle exp/collapse if (column.getIndex() == viewer.getExpandableColumn()) { // indent for (int i = 0; i < level; i++) { writer.print(ICON_CLEAR.toImgTag(expandIconWidth, expandIconHeight)); } if (contentProvider.hasChildren(row)) { if (viewer.isEnabled()) { writer.print(""); writer.print((expanded ? ICON_COLLAPSE : ICON_EXPAND).toImgTag(expandIconWidth, expandIconHeight)); writer.print(""); } else { writer.print((expanded ? ICON_COLLAPSE : ICON_EXPAND).toImgTag(expandIconWidth, expandIconHeight)); } } else { if (isExpandLinkSpacing()) { writer.print(ICON_CLEAR.toImgTag(expandIconWidth, expandIconHeight)); } } //writer.print("    		"); } // print cell value if (cell.image != null) { writer.print(cell.image.toImgTag()); if (cell.text != null) { //writer.print(""); } } if (cell.text != null) { writer.print(""); if (cell.text.length() == 0 && cell.image == null) { writer.print(" "); } else { writer.print(cell.text); } writer.print(""); } if (innerTable) { writer.print("
    "); //writer.print("

    "); } writer.println(""); } // if its a fixed width, must render an empty column that fills up the space. if (viewer.getWidth() != 0 && right) { writer.println(" "); } writer.println(" "); if (contentProvider.hasChildren(row) && expanded) { renderRows(level + 1, hasNext || it.hasNext(), writer, contentProvider.getChildren(row), viewer, labelProvider, right, tblView); } } return count; } /** * Returns CssClass used for table headers. * @param column * @return */ protected String getHeaderCssClass(TableColumn column) { return "tbvColHeadCell"; } /** * Get new logger after deserialization. * @param s * @throws IOException */ private void readObject(ObjectInputStream s) throws IOException { try { s.defaultReadObject(); } catch (ClassNotFoundException e) { throw new IOException("ClassNotFound in readObject"); } log = LogFactory.getLog(getClass()); } /** * @return the fixColumn */ public int getFixColumn() { return fixColumn; } /** * @param fixColumn the fixColumn to set */ public void setFixColumn(int fixColumn) { this.fixColumn = fixColumn; } /** * @return the reuseContent */ public boolean isReuseContent() { return reuseContent; } /** * @param reuseContent the reuseContent to set */ public void setReuseContent(boolean reuseContent) { this.reuseContent = reuseContent; } }



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