add tricky mode (disabled by default) to output cell's text in next cells, if they are empty (non-optimal, thought)
add option (enabled by default) to change leading spaces into entities git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1147933 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Sergey Vladimirov
parent
3743efebeb
commit
9a3f3dd94f
@ -59,6 +59,12 @@ public class ExcelToHtmlConverter
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private static final POILogger logger = POILogFactory
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.getLogger( ExcelToHtmlConverter.class );
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protected static int getColumnWidth( HSSFSheet sheet, int columnIndex )
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{
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return ExcelToHtmlUtils.getColumnWidthInPx( sheet
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.getColumnWidth( columnIndex ) );
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}
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/**
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* Java main() interface to interact with {@link ExcelToHtmlConverter}
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*
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@ -133,10 +139,14 @@ public class ExcelToHtmlConverter
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private boolean outputHiddenRows = false;
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private boolean outputLeadingSpacesAsNonBreaking = true;
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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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@ -328,13 +338,84 @@ public class ExcelToHtmlConverter
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return outputHiddenRows;
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}
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public boolean isOutputLeadingSpacesAsNonBreaking()
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{
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return outputLeadingSpacesAsNonBreaking;
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}
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public boolean isOutputRowNumbers()
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{
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return outputRowNumbers;
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}
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protected boolean isTextEmpty( HSSFCell cell )
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{
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final String value;
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switch ( cell.getCellType() )
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{
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case HSSFCell.CELL_TYPE_STRING:
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// XXX: enrich
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value = cell.getRichStringCellValue().getString();
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break;
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case HSSFCell.CELL_TYPE_FORMULA:
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switch ( cell.getCachedFormulaResultType() )
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{
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case HSSFCell.CELL_TYPE_STRING:
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HSSFRichTextString str = cell.getRichStringCellValue();
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if ( str == null || str.length() <= 0 )
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return false;
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value = str.toString();
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break;
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case HSSFCell.CELL_TYPE_NUMERIC:
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HSSFCellStyle style = cell.getCellStyle();
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if ( style == null )
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{
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return false;
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}
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value = ( _formatter.formatRawCellContents(
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cell.getNumericCellValue(), style.getDataFormat(),
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style.getDataFormatString() ) );
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break;
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case HSSFCell.CELL_TYPE_BOOLEAN:
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value = String.valueOf( cell.getBooleanCellValue() );
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break;
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case HSSFCell.CELL_TYPE_ERROR:
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value = ErrorEval.getText( cell.getErrorCellValue() );
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break;
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default:
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value = ExcelToHtmlUtils.EMPTY;
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break;
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}
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break;
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case HSSFCell.CELL_TYPE_BLANK:
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value = ExcelToHtmlUtils.EMPTY;
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break;
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case HSSFCell.CELL_TYPE_NUMERIC:
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value = _formatter.formatCellValue( cell );
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break;
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case HSSFCell.CELL_TYPE_BOOLEAN:
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value = String.valueOf( cell.getBooleanCellValue() );
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break;
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case HSSFCell.CELL_TYPE_ERROR:
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value = ErrorEval.getText( cell.getErrorCellValue() );
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break;
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default:
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return true;
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}
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return ExcelToHtmlUtils.isEmpty( value );
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}
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public boolean isUseDivsToSpan()
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{
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return useDivsToSpan;
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}
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protected boolean processCell( HSSFWorkbook workbook, HSSFCell cell,
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Element tableCellElement )
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Element tableCellElement, int normalWidthPx, int maxSpannedWidthPx,
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float normalHeightPt )
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{
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final HSSFCellStyle cellStyle = cell.getCellStyle();
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@ -421,8 +502,50 @@ public class ExcelToHtmlConverter
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}
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}
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if ( isOutputLeadingSpacesAsNonBreaking() && value.startsWith( " " ) )
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{
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StringBuilder builder = new StringBuilder();
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for ( int c = 0; c < value.length(); c++ )
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{
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if ( value.charAt( c ) != ' ' )
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break;
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builder.append( '\u00a0' );
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}
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if ( value.length() != builder.length() )
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builder.append( value.substring( builder.length() ) );
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value = builder.toString();
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}
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Text text = htmlDocumentFacade.createText( value );
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if ( 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 innerDiv = htmlDocumentFacade.getDocument().createElement(
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"div" );
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innerDiv.setAttribute( "style", "position:absolute;min-width:"
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+ normalWidthPx
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+ "px;"
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+ ( maxSpannedWidthPx != Integer.MAX_VALUE ? "max-width:"
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+ maxSpannedWidthPx + "px;" : "" )
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+ "overflow:hidden;max-height:" + normalHeightPt
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+ "pt;white-space:nowrap;" );
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innerDiv.appendChild( text );
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outerDiv.appendChild( innerDiv );
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tableCellElement.appendChild( outerDiv );
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}
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else
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{
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tableCellElement.appendChild( text );
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}
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return ExcelToHtmlUtils.isEmpty( value ) && cellStyleIndex == 0;
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}
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@ -473,8 +596,8 @@ public class ExcelToHtmlConverter
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continue;
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Element col = htmlDocumentFacade.createTableColumn();
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col.setAttribute( "width", String.valueOf( ExcelToHtmlUtils
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.getColumnWidthInPx( sheet.getColumnWidth( c ) ) ) );
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col.setAttribute( "width",
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String.valueOf( getColumnWidth( sheet, c ) ) );
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columnGroup.appendChild( col );
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}
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table.appendChild( columnGroup );
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@ -525,12 +648,40 @@ public class ExcelToHtmlConverter
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if ( !isOutputHiddenColumns() && sheet.isColumnHidden( colIx ) )
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continue;
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int divWidthPx = 0;
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if ( isUseDivsToSpan() )
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{
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divWidthPx = getColumnWidth( sheet, colIx );
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boolean hasBreaks = false;
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for ( int nextColumnIndex = colIx + 1; nextColumnIndex < maxColIx; nextColumnIndex++ )
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{
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if ( !isOutputHiddenColumns()
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&& sheet.isColumnHidden( nextColumnIndex ) )
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continue;
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if ( row.getCell( nextColumnIndex ) != null
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&& !isTextEmpty( row.getCell( nextColumnIndex ) ) )
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{
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hasBreaks = true;
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break;
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}
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divWidthPx += getColumnWidth( sheet, nextColumnIndex );
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}
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if ( !hasBreaks )
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divWidthPx = Integer.MAX_VALUE;
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}
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Element tableCellElement = htmlDocumentFacade.createTableCell();
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boolean emptyCell;
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if ( cell != null )
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{
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emptyCell = processCell( workbook, cell, tableCellElement );
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emptyCell = processCell( workbook, cell, tableCellElement,
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getColumnWidth( sheet, colIx ), divWidthPx,
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row.getHeight() / 20f );
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}
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else
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{
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@ -592,6 +743,8 @@ 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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int maxRowColumnNumber = processRow( workbook, sheet, row,
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tableRowElement );
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@ -678,8 +831,27 @@ public class ExcelToHtmlConverter
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this.outputHiddenRows = outputZeroHeightRows;
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}
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public void setOutputLeadingSpacesAsNonBreaking(
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boolean outputPrePostSpacesAsNonBreaking )
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{
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this.outputLeadingSpacesAsNonBreaking = outputPrePostSpacesAsNonBreaking;
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}
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public void setOutputRowNumbers( boolean outputRowNumbers )
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{
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this.outputRowNumbers = outputRowNumbers;
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}
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/**
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* Allows converter to wrap content into two additional DIVs with tricky
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* styles, so it will wrap across empty cells (like in Excel).
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* <p>
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* <b>Warning:</b> after enabling this mode do not serialize result HTML
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* with INDENT=YES option, because line breaks will make additional
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* (unwanted) changes
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*/
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public void setUseDivsToSpan( boolean useDivsToSpan )
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{
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this.useDivsToSpan = useDivsToSpan;
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}
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}
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