litesoft
@ 947
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// This Source Code is in the Public Domain per: http://unlicense.org package org.litesoft.GWT.client.widgets.datatables; import org.litesoft.commonfoundation.html.*; import com.google.gwt.gen2.table.client.*; import com.google.gwt.gen2.table.client.TableDefinition.*; import com.google.gwt.user.client.*; import com.google.gwt.user.client.ui.HasHorizontalAlignment.*; import com.google.gwt.user.client.ui.*; /** * A basic cell renderer. By default, the model element for the cell is * converted to a String via {@link String#valueOf(Object)} and written to the * cell. The default conversion can be overriden by setting a custom formatter. * <p/> * see #setFormatter(StringFormatter) */ public class TableCellRenderer<T> implements CellRenderer<T, Object> { public enum EscapeCtrl { NoWrap( HTMLize.INSTANCE_NO_WRAP ), // NoEscape( HTMLize.INSTANCE_NO_ESCAPE ), // Regular( HTMLize.INSTANCE ); private HTMLize mHTMLizer; EscapeCtrl( HTMLize pHTMLizer ) { mHTMLizer = pHTMLizer; } public String process( String pText ) { return mHTMLizer.process( pText ); } } public static class Builder { private String mElementStyleName; private StringFormatter mFormatter; private EscapeCtrl mEscapeCtrl = EscapeCtrl.NoWrap; public String getElementBaseStyleName() { return (mElementStyleName != null) ? mElementStyleName : ""; } public Builder setElementBaseStyleName( String pStyleName ) { mElementStyleName = pStyleName; return this; } public StringFormatter getFormatter() { return (mFormatter != null) ? mFormatter : StringFormatterDefault.INSTANCE; } public Builder setFormatter( StringFormatter pFormatter ) { if ( pFormatter == null ) { throw new NullPointerException(); } mFormatter = pFormatter; return this; } public EscapeCtrl getEscapeCtrl() { return (mEscapeCtrl != null) ? mEscapeCtrl : EscapeCtrl.NoWrap; } /** * Instructs the renderer to escape HTML markup in values to be rendered. * Default is <code>NoWrap</code>. Specifying <code>NoEscape</code> will enable * HTML script injection if the data being rendererd is not from a trusted * source. * * @param pEscapeCtrl <code>NoEscape</code> to allow HTML markup to be rendered in * cells * <p/> * see #escapeMarkup(String) */ public Builder setEscapeCtrl( EscapeCtrl pEscapeCtrl ) { mEscapeCtrl = pEscapeCtrl; return this; } } public static Builder NO_WRAP = new Builder().setEscapeCtrl( EscapeCtrl.NoWrap ); public static Builder NO_ESCAPE = new Builder().setEscapeCtrl( EscapeCtrl.NoEscape ); private String mElementStyleName; private StringFormatter mFormatter; private EscapeCtrl mEscapeCtrl; public TableCellRenderer( Builder pBuilder ) { if ( pBuilder == null ) { pBuilder = NO_WRAP; } mElementStyleName = pBuilder.getElementBaseStyleName(); mFormatter = pBuilder.getFormatter(); mEscapeCtrl = pBuilder.getEscapeCtrl(); } public TableCellRenderer() { this( null ); } @Override public void renderRowValue( T pRowValue, ColumnDefinition<T, Object> pColumnDef, AbstractCellView<T> pView ) { Object cellValue = pColumnDef.getCellValue( pRowValue ); prepareElement( pRowValue, pColumnDef, pView, cellValue ); renderContent( pRowValue, pColumnDef, pView, cellValue ); } @SuppressWarnings({"UnusedDeclaration"}) public void prepareElement( T rowValue, ColumnDefinition<T, Object> pColumnDef, AbstractCellView<T> pView, Object pCellValue ) { // set cell class name(s) StringBuilder styleName = new StringBuilder(); buildStyleName( styleName, pCellValue ); pView.setStyleName( styleName.toString() ); // align has a special setter b/c css "text-align" does not work for block context pView.setHorizontalAlignment( pColumnDef.getColumnProperty( HorizontalAlignmentProperty.TYPE ).getValue() ); pView.setVerticalAlignment( pColumnDef.getColumnProperty( VerticalAlignmentProperty.TYPE ).getValue() ); // set cell CSS properties pView.setStyleAttribute( "paddingLeft", pColumnDef.getColumnProperty( PaddingProperty.LEFT ).getValue() + "px" ); pView.setStyleAttribute( "paddingRight", pColumnDef.getColumnProperty( PaddingProperty.RIGHT ).getValue() + "px" ); pView.setStyleAttribute( "paddingTop", pColumnDef.getColumnProperty( PaddingProperty.TOP ).getValue() + "px" ); pView.setStyleAttribute( "paddingBottom", pColumnDef.getColumnProperty( PaddingProperty.BOTTOM ).getValue() + "px" ); } @SuppressWarnings({"UnusedDeclaration"}) protected StringBuilder buildStyleName( StringBuilder result, Object pCellValue ) { result.append( mElementStyleName ); return result; } protected StringBuilder appendDependantStyle( StringBuilder styleIn, String dependentStyleName ) { return appendDependantStyle( styleIn, dependentStyleName, true ); } protected StringBuilder appendDependantStyle( StringBuilder styleIn, String dependentStyleName, boolean add ) { if ( add ) { styleIn.append( ' ' ); styleIn.append( mElementStyleName ); styleIn.append( '-' ); styleIn.append( dependentStyleName ); } return styleIn; } public void renderContent( T pRowValue, ColumnDefinition<T, Object> pColumnDef, AbstractCellView<T> pView, Object pCellValue ) { if ( pCellValue instanceof Widget ) { Widget widget = (Widget) pCellValue; Element element = widget.getElement(); HorizontalAlignmentConstant align = pColumnDef.getColumnProperty( HorizontalAlignmentProperty.TYPE ).getValue(); pView.setHorizontalAlignment( align ); if ( element.getTagName().equalsIgnoreCase( "table" ) ) { DOM.setElementAttribute( element, "cellpadding", "0" ); DOM.setElementAttribute( element, "cellspacing", "0" ); } pView.setWidget( widget ); } else { String valueString = getValueString( pCellValue ); String safeValueString = mEscapeCtrl.process( valueString ); String nonEmptyValueString = ("".equals( safeValueString )) ? HTMLConstants.NBSP : safeValueString; String cellString = getCellString( pRowValue, nonEmptyValueString, pCellValue ); pView.setHTML( cellString ); } } /** * Calls the formatter. * * @return an HTML snippet representing <code>modelElement</code> */ protected String getValueString( Object modelElement ) { return mFormatter.getString( modelElement ); } /** * Template method for decorating text returned by the formatter. * Implementors can use this method to create complex cells. * <p/> * This implementation simply returns the input string. * * @param pRowValue * @param pValueString the string provided by the formatter * * @return an HTML snippet describing the entire content of the cell */ protected String getCellString( T pRowValue, String pValueString, Object pCellValue ) { return pValueString; } } |
Commits for litesoft/trunk/Java/GWT/Client/src/org/litesoft/GWT/client/widgets/datatables/TableCellRenderer.java
Revision | Author | Commited | Message |
---|---|---|---|
947 Diff | GeorgeS | Fri 06 Jun, 2014 23:36:56 +0000 | Correct Spelling of package! |
942 Diff | GeorgeS | Mon 02 Jun, 2014 23:41:46 +0000 | Extracting commonfoundation |
720 Diff | GeorgeS | Sun 10 Jun, 2012 16:20:42 +0000 | |
712 Diff | GeorgeS | Sat 09 Jun, 2012 22:46:04 +0000 | Move PAV stuff into LiteSoft |
151 Diff | GeorgeS | Thu 17 Mar, 2011 04:16:22 +0000 | |
49 Diff | GeorgeS | Mon 12 Apr, 2010 02:59:10 +0000 | License Text |
23 Diff | GeorgeS | Wed 24 Feb, 2010 00:34:32 +0000 | |
2 | GeorgeS | Sun 07 Feb, 2010 12:50:58 +0000 |