Class SelectFieldListBoxRenderer

java.lang.Object

com.itextpdf.layout.renderer.AbstractRenderer

com.itextpdf.layout.renderer.BlockRenderer

com.itextpdf.forms.form.renderer.AbstractSelectFieldRenderer

com.itextpdf.forms.form.renderer.SelectFieldListBoxRenderer

All Implemented Interfaces:

IPropertyContainer, IRenderer

public class SelectFieldListBoxRenderer
extends AbstractSelectFieldRenderer

The SelectFieldListBoxRenderer implementation for select field renderer.

Field Summary

Fields inherited from class AbstractRenderer

childRenderers, EPS, flushed, INF, isLastRendererForModelElement, modelElement, occupiedArea, OVERLAP_EPSILON, parent, positionedRenderers, properties

Constructor Summary

Constructors

Constructor	Description
SelectFieldListBoxRenderer(AbstractSelectField modelElement)	Creates a new SelectFieldListBoxRenderer instance.

Method Summary

Modifier and Type	Method	Description
protected boolean	allowLastYLineRecursiveExtraction()
protected void	applyAcroField(DrawContext drawContext)	Applies the AcroField widget.
private void	applySelectedStyle(IRenderer selectedOption)
protected IRenderer	createFlatRenderer()	Creates the flat renderer instance.
private float	getCalculatedHeight(IRenderer flatRenderer)
protected float	getFinalSelectFieldHeight(float availableHeight, float actualHeight, boolean isClippedHeight)	Returns final height of the select field.
private float	getMaxOptionActualHeight(IRenderer flatRenderer)
IRenderer	getNextRenderer()	Gets a new instance of this class to be used as a next renderer, after this renderer is used, if IRenderer.layout(LayoutContext) is called more than once.
private List<IRenderer>	getSelectedOptions(IRenderer rendererSubTree)
private boolean	isMultiple()
LayoutResult	layout(LayoutContext layoutContext)	This method simulates positioning of the renderer, including all of its children, and returns the LayoutResult, representing the layout result, including occupied area, status, i.e.
private void	setFontColorRecursively(IRenderer selectedOption)	The `select` tag has default color css property, therefore it makes sense to explicitly override this property to all children, otherwise it will be not applied due to the css resolving mechanism.

Methods inherited from class AbstractSelectFieldRenderer

applyAccessibilityProperties, draw, drawChildren, getConformance, getLang, getModelId, getOptionsMarkedSelected, isFlatten, isOptGroupRenderer, isOptionRenderer, setupBuilderValues, writeAcroFormFieldLangAttribute

Methods inherited from class BlockRenderer

applyRotationLayout, applyVerticalAlignment, beginRotationIfApplied, createOverflowRenderer, createRotationTransformInsideOccupiedArea, createSplitRenderer, endRotationIfApplied, getMinMaxWidth, getMinMaxWidth, getOccupiedAreaBBox, getResolvedFont

Methods inherited from class AbstractRenderer

addAllProperties, addChild, alignChildHorizontally, applyAbsolutePosition, applyAction, applyBorderBox, applyBorderBox, applyDestination, applyDestinationsAndAnnotation, applyLinkAnnotation, applyMargins, applyMargins, applyPaddings, applyPaddings, applyRelativePositioningTranslation, beginElementOpacityApplying, beginTransformationIfApplied, calculateAbsolutePdfBBox, calculateBBox, calculateShiftToPositionBBoxOfPointsAt, clipBackgroundArea, clipBackgroundArea, clipBorderArea, createXObject, deleteOwnProperty, deleteProperty, drawBackground, drawBorder, endElementOpacityApplying, endTransformationIfApplied, getBackgroundArea, getBorderAreaBBox, getBorderRadii, getBorders, getChildRenderers, getDefaultProperty, getFirstYLineRecursively, getInnerAreaBBox, getLastYLineRecursively, getMargins, getModelElement, getOccupiedArea, getOwnProperties, getOwnProperty, getPaddings, getParent, getProperty, getProperty, getPropertyAsBoolean, getPropertyAsColor, getPropertyAsFloat, getPropertyAsFloat, getPropertyAsFont, getPropertyAsInteger, getPropertyAsTransparentColor, getPropertyAsUnitValue, hasAbsoluteUnitValue, hasOwnOrModelProperty, hasOwnProperty, hasProperty, hasRelativeUnitValue, initElementAreas, isAbsolutePosition, isBorderBoxSizing, isFirstOnRootArea, isFixedLayout, isFlushed, isKeepTogether, isNotFittingHeight, isNotFittingLayoutArea, isNotFittingWidth, isOverflowFit, isOverflowProperty, isOverflowProperty, isOverflowProperty, isPositioned, isRelativePosition, isStaticLayout, move, rectangleToPointsList, retrieveHeight, retrieveMaxHeight, retrieveMaxWidth, retrieveMinHeight, retrieveMinWidth, retrieveResolvedDeclaredHeight, retrieveUnitValue, retrieveUnitValue, retrieveWidth, setBorders, setMinMaxWidthBasedOnFixedWidth, setParent, setProperty, toString, transformPoints, updateHeight, updateHeightsOnSplit, updateMaxHeight, updateMinHeight, updateWidth

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

SelectFieldListBoxRenderer

public SelectFieldListBoxRenderer(AbstractSelectField modelElement)

Creates a new SelectFieldListBoxRenderer instance.

Parameters:

modelElement - the model element

Method Details

getNextRenderer

public IRenderer getNextRenderer()

Description copied from interface: IRenderer

Gets a new instance of this class to be used as a next renderer, after this renderer is used, if IRenderer.layout(LayoutContext) is called more than once.

Returns:

new renderer instance

layout

public LayoutResult layout(LayoutContext layoutContext)

Description copied from class: AbstractSelectFieldRenderer

This method simulates positioning of the renderer, including all of its children, and returns the LayoutResult, representing the layout result, including occupied area, status, i.e. if there was enough place to fit the renderer subtree, etc. LayoutResult can be extended to return custom layout results for custom elements, e.g. TextRenderer uses TextLayoutResult as its result. This method can be called standalone to learn how much area the renderer subtree needs, or can be called before IRenderer.draw(DrawContext), to prepare the renderer to be flushed to the output stream.

Specified by:

layout in interface IRenderer

Overrides:

layout in class AbstractSelectFieldRenderer

Parameters:

layoutContext - the description of layout area and any other additional information

Returns:

result of the layout process

allowLastYLineRecursiveExtraction

protected boolean allowLastYLineRecursiveExtraction()

Overrides:

allowLastYLineRecursiveExtraction in class AbstractRenderer

createFlatRenderer

protected IRenderer createFlatRenderer()

Description copied from class: AbstractSelectFieldRenderer

Creates the flat renderer instance.

Specified by:

createFlatRenderer in class AbstractSelectFieldRenderer

Returns:

IRenderer instance.

getFinalSelectFieldHeight

protected float getFinalSelectFieldHeight(float availableHeight,
 float actualHeight,
 boolean isClippedHeight)

Description copied from class: AbstractSelectFieldRenderer

Returns final height of the select field.

Overrides:

getFinalSelectFieldHeight in class AbstractSelectFieldRenderer

Parameters:

availableHeight - available height of the layout area

actualHeight - actual occupied height of the select field

isClippedHeight - indicates whether the layout area's height is clipped or not

Returns:

final height of the select field.

applyAcroField

protected void applyAcroField(DrawContext drawContext)

Description copied from class: AbstractSelectFieldRenderer

Applies the AcroField widget.

Specified by:

applyAcroField in class AbstractSelectFieldRenderer

Parameters:

drawContext - the draw context

getCalculatedHeight

private float getCalculatedHeight(IRenderer flatRenderer)

getMaxOptionActualHeight

private float getMaxOptionActualHeight(IRenderer flatRenderer)

getSelectedOptions

private List<IRenderer> getSelectedOptions(IRenderer rendererSubTree)

isMultiple

private boolean isMultiple()

applySelectedStyle

private void applySelectedStyle(IRenderer selectedOption)

setFontColorRecursively

private void setFontColorRecursively(IRenderer selectedOption)

The `select` tag has default color css property, therefore it makes sense to explicitly override this property to all children, otherwise it will be not applied due to the css resolving mechanism.