compact result HTML in Excel-to-HTML converter
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1148040 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Sergey Vladimirov
parent
8e4853b55e
commit
29e9f487d5
@ -127,7 +127,11 @@ public class ExcelToHtmlConverter
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private final HSSFDataFormatter _formatter = new HSSFDataFormatter();
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private Map<String, String> cssStyleToClass = new LinkedHashMap<String, String>();
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private String cssClassContainerCell = null;
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private String cssClassContainerDiv = null;
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private final String cssClassTable;
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private Map<Short, String> excelStyleToClass = new LinkedHashMap<Short, String>();
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@ -143,17 +147,13 @@ public class ExcelToHtmlConverter
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private boolean outputRowNumbers = true;
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private final Element stylesElement;
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private boolean useDivsToSpan = false;
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public ExcelToHtmlConverter( Document doc )
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{
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htmlDocumentFacade = new HtmlDocumentFacade( doc );
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stylesElement = doc.createElement( "style" );
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stylesElement.setAttribute( "type", "text/css" );
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htmlDocumentFacade.getHead().appendChild( stylesElement );
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cssClassTable = htmlDocumentFacade.getOrCreateCssClass( "table", "t",
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"border-collapse:collapse;border-spacing:0;" );
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}
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protected String buildStyle( HSSFWorkbook workbook, HSSFCellStyle cellStyle )
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@ -279,25 +279,17 @@ public class ExcelToHtmlConverter
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protected String getStyleClassName( HSSFWorkbook workbook,
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HSSFCellStyle cellStyle )
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{
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String knownClass = excelStyleToClass.get( Short.valueOf( cellStyle
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.getIndex() ) );
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final Short cellStyleKey = Short.valueOf( cellStyle.getIndex() );
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String knownClass = excelStyleToClass.get( cellStyleKey );
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if ( knownClass != null )
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return knownClass;
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String cssStyle = buildStyle( workbook, cellStyle );
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knownClass = cssStyleToClass.get( cssStyle );
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if ( knownClass != null )
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{
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excelStyleToClass.put( Short.valueOf( cellStyle.getIndex() ),
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knownClass );
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return knownClass;
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}
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knownClass = "c" + cellStyle.getIndex();
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cssStyleToClass.put( cssStyle, knownClass );
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excelStyleToClass.put( Short.valueOf( cellStyle.getIndex() ),
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knownClass );
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return knownClass;
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String cssClass = htmlDocumentFacade.getOrCreateCssClass( "td", "c",
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cssStyle );
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excelStyleToClass.put( cellStyleKey, cssClass );
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return cssClass;
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}
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public boolean isOutputColumnHeaders()
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@ -467,8 +459,17 @@ public class ExcelToHtmlConverter
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final short cellStyleIndex = cellStyle.getIndex();
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if ( cellStyleIndex != 0 )
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{
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tableCellElement.setAttribute( "class",
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getStyleClassName( workbook, cellStyle ) );
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String mainCssClass = getStyleClassName( workbook, cellStyle );
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if ( !noText && isUseDivsToSpan() )
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{
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tableCellElement.setAttribute( "class", mainCssClass + " "
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+ cssClassContainerCell );
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}
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else
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{
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tableCellElement.setAttribute( "class", mainCssClass );
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}
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if ( noText )
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{
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/*
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@ -500,14 +501,10 @@ public class ExcelToHtmlConverter
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if ( !noText && isUseDivsToSpan() )
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{
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tableCellElement.setAttribute( "style",
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"padding:0;margin:0;align:left;vertical-align:top;" );
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Element outerDiv = htmlDocumentFacade.getDocument().createElement(
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"div" );
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outerDiv.setAttribute( "style", "position:relative;" );
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Element outerDiv = htmlDocumentFacade.createBlock();
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outerDiv.setAttribute( "class", this.cssClassContainerDiv );
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Element innerDiv = htmlDocumentFacade.getDocument().createElement(
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"div" );
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Element innerDiv = htmlDocumentFacade.createBlock();
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StringBuilder innerDivStyle = new StringBuilder();
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innerDivStyle.append( "position:absolute;min-width:" );
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innerDivStyle.append( normalWidthPx );
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@ -523,7 +520,11 @@ public class ExcelToHtmlConverter
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innerDivStyle.append( "pt;white-space:nowrap;" );
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ExcelToHtmlUtils.appendAlign( innerDivStyle,
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cellStyle.getAlignment() );
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innerDiv.setAttribute( "style", innerDivStyle.toString() );
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innerDiv.setAttribute(
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"class",
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htmlDocumentFacade.getOrCreateCssClass(
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outerDiv.getTagName(), "d",
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innerDivStyle.toString() ) );
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innerDiv.appendChild( text );
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outerDiv.appendChild( innerDiv );
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@ -712,7 +713,7 @@ public class ExcelToHtmlConverter
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return;
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Element table = htmlDocumentFacade.createTable();
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table.setAttribute( "class", "t" );
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table.setAttribute( "class", cssClassTable );
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Element tableBody = htmlDocumentFacade.createTableBody();
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@ -730,8 +731,11 @@ public class ExcelToHtmlConverter
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continue;
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Element tableRowElement = htmlDocumentFacade.createTableRow();
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tableRowElement.setAttribute( "style",
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"height:" + ( row.getHeight() / 20f ) + "pt;" );
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tableRowElement.setAttribute(
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"class",
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htmlDocumentFacade.getOrCreateCssClass(
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tableRowElement.getTagName(), "r", "height:"
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+ ( row.getHeight() / 20f ) + "pt;" ) );
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int maxRowColumnNumber = processRow( workbook, sheet, row,
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tableRowElement );
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@ -784,23 +788,23 @@ public class ExcelToHtmlConverter
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processDocumentInformation( summaryInformation );
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}
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if ( isUseDivsToSpan() )
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{
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// prepare CSS classes for later usage
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this.cssClassContainerCell = htmlDocumentFacade
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.getOrCreateCssClass( "td", "c",
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"padding:0;margin:0;align:left;vertical-align:top;" );
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this.cssClassContainerDiv = htmlDocumentFacade.getOrCreateCssClass(
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"div", "d", "position:relative;" );
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}
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for ( int s = 0; s < workbook.getNumberOfSheets(); s++ )
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{
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HSSFSheet sheet = workbook.getSheetAt( s );
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processSheet( workbook, sheet );
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}
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stylesElement
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.appendChild( htmlDocumentFacade
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.createText( "table.t{border-collapse:collapse;border-spacing:0;}\n" ) );
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if ( !cssStyleToClass.isEmpty() )
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{
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for ( Map.Entry<String, String> entry : cssStyleToClass.entrySet() )
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{
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stylesElement.appendChild( htmlDocumentFacade.createText( "td."
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+ entry.getValue() + "{" + entry.getKey() + "}\n" ) );
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}
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}
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htmlDocumentFacade.updateStylesheet();
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}
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public void setOutputColumnHeaders( boolean outputColumnHeaders )
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@ -16,18 +16,26 @@
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==================================================================== */
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package org.apache.poi.hwpf.converter;
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import java.util.LinkedHashMap;
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import java.util.Map;
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import org.w3c.dom.Document;
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import org.w3c.dom.Element;
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import org.w3c.dom.Text;
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public class HtmlDocumentFacade
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{
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protected final Element body;
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protected final Document document;
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protected final Element head;
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protected final Element html;
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/**
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* Map from tag name, to map linking known styles and css class names
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*/
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private Map<String, Map<String, String>> stylesheet = new LinkedHashMap<String, Map<String, String>>();
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private Element stylesheetElement;
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protected Element title;
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protected Text titleText;
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@ -40,11 +48,17 @@ public class HtmlDocumentFacade
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body = document.createElement( "body" );
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head = document.createElement( "head" );
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stylesheetElement = document.createElement( "style" );
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stylesheetElement.setAttribute( "type", "text/css" );
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html.appendChild( head );
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html.appendChild( body );
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head.appendChild( stylesheetElement );
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body.setAttribute( "style", "white-space-collapsing: preserve; " );
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body.setAttribute(
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"class",
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getOrCreateCssClass( "body", "b",
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"white-space-collapsing: preserve; " ) );
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}
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public void addAuthor( String value )
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@ -70,6 +84,11 @@ public class HtmlDocumentFacade
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head.appendChild( meta );
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}
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public Element createBlock()
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{
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return document.createElement( "div" );
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}
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public Element createHeader1()
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{
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return document.createElement( "h1" );
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@ -167,6 +186,22 @@ public class HtmlDocumentFacade
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return head;
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}
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public String getOrCreateCssClass( String tagName, String classNamePrefix,
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String style )
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{
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if ( !stylesheet.containsKey( tagName ) )
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stylesheet.put( tagName, new LinkedHashMap<String, String>( 1 ) );
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Map<String, String> styleToClassName = stylesheet.get( tagName );
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String knownClass = styleToClassName.get( style );
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if ( knownClass != null )
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return knownClass;
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String newClassName = classNamePrefix + ( styleToClassName.size() + 1 );
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styleToClassName.put( style, newClassName );
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return newClassName;
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}
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public String getTitle()
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{
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if ( title == null )
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@ -194,4 +229,24 @@ public class HtmlDocumentFacade
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this.titleText.setData( titleText );
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}
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public void updateStylesheet()
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{
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StringBuilder stringBuilder = new StringBuilder();
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for ( Map.Entry<String, Map<String, String>> byTag : stylesheet
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.entrySet() )
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{
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String tagName = byTag.getKey();
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for ( Map.Entry<String, String> byStyle : byTag.getValue()
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.entrySet() )
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{
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String style = byStyle.getKey();
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String className = byStyle.getValue();
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stringBuilder.append( tagName + "." + className + "{" + style
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+ "}\n" );
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}
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}
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stylesheetElement.setTextContent( stringBuilder.toString() );
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}
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}
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