Class CSSEngineImpl

java.lang.Object

org.eclipse.e4.ui.css.core.impl.engine.CSSEngineImpl

All Implemented Interfaces:

CSSEngine

Direct Known Subclasses:

CSSSWTEngineImpl

public abstract class CSSEngineImpl
extends Object
implements CSSEngine

Abstract CSS Engine which manages stylesheet parsing, the cascade, and applying styles. To apply styles, call the applyStyles(Object, boolean, boolean) method. This method check if ICSSPropertyHandler is registered for apply the CSS property.

Version:

1.0.0

Author:

Angelo ZERR

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	computeDefaultStyle
protected List<ICSSPropertyHandlerProvider>	propertyHandlerProviders	An ordered list of ICSSPropertyHandlerProvider

Constructor Summary

Constructors

Constructor	Description
CSSEngineImpl()

Method Summary

Modifier and Type	Method	Description
void	addStyleSheet(CSSStyleSheetImpl styleSheet)	Register a parsed stylesheet with this engine's cascade.
ICSSPropertyHandler	applyCSSProperty(Object element, String property, CSSValue value, String pseudo)	Delegates the handle method.
void	applyDefaultStyleDeclaration(Object element, boolean applyStylesToChildNodes)	Apply initial style of the object node.
void	applyDefaultStyleDeclaration(Object element, boolean applyStylesToChildNodes, CSSStyleDeclaration newStyle, String pseudoE)
void	applyInlineStyle(Object node, boolean applyStylesToChildNodes)	Apply inline style of the object node.
void	applyStyleDeclaration(Object element, CSSStyleDeclaration style, String pseudo)	Apply style declaration to the object node.
void	applyStyles(Object element, boolean applyStylesToChildNodes)	Apply styles to the Object node (SWT Text,...).
void	applyStyles(Object element, boolean applyStylesToChildNodes, boolean computeDefaultStyle)	Apply styles to the Object node (SWT Text,...).
CSSStyleDeclaration	computeStyle(Element elt, String pseudoElt)	Compute the merged style declaration for the given element and pseudo element from all stylesheets registered with this engine.
String	convert(Object value, Object toType, Object context)	Convert Object type of toType into CSSValue String.
Object	convert(CSSValue value, Object toType, Object context)	Convert CSSValue into Object type of toType.
void	dispose()	Call reset and dispose all resources
String[]	getCSSCompositePropertiesNames(String property)	Return array of CSS property name of the CSS property.
CSSElementContext	getCSSElementContext(Object element)	Get the CSSElementContext context of the object node.
Collection<String>	getCSSProperties(Object element)	Return the set of property names and handlers for the provided node.
protected Collection<ICSSPropertyHandler>	getCSSPropertyHandlers(String property)
ICSSValueConverter	getCSSValueConverter(Object toType)	Get CSSValue converter ICSSValueConverter which is enable to convert toType Object.
CSSStyleDeclaration	getDefaultStyleDeclaration(Object element, String pseudoE)	Get default CSSStyleDeclaration of the node for pseudo element pseudoE which can be null.
CSSStyleDeclaration	getDefaultStyleDeclaration(Object widget, CSSStyleDeclaration newStyle, String pseudoE)
Element	getElement(Object element)	Return the w3c Element linked to the Object element.
IElementProvider	getElementProvider()	Get IElementProvider registered used to retrieve w3c Element which wrap native widget.
protected Map<Object, CSSElementContext>	getElementsContext()
CSSErrorHandler	getErrorHandler()	Return CSSErrorHandler used to handles exception error.
Object	getNativeWidget(Object element)
IResourcesLocatorManager	getResourcesLocatorManager()	Get the IResourcesLocatorManager to use manage resources.
IResourcesRegistry	getResourcesRegistry()	Get the IResourcesRegistry registered used to cache/dispose resources.
protected String[]	getStaticPseudoInstances(Element element)
List<CSSStyleSheetImpl>	getStyleSheets()	The stylesheets registered with this engine, in registration order.
void	handleExceptions(Exception e)	Handle exceptions thrown while parsing, applying styles.
void	handleWidgetDisposed(Object widget)	Called when a widget is disposed.
protected void	hookNativeWidget(Object widget)	Called when an element context is created for a native widget and registered with this engine.
boolean	isElementStyled(Object element)
protected boolean	isVisible(Element elt)	Allow the CSS engine to skip particular elements if they are not visible.
void	markElementStyled(Object element)
boolean	matches(Selectors.Selector selector, Object element, String pseudoElt)	Check if the selector matches the object node.
protected void	onStylesAppliedToChildNodes(Element element, NodeList nodes)	Callback method called when styles applied of nodes children of the element.
CSSStyleDeclaration	parseAndApplyStyleDeclaration(Object node, InputStream stream)	Parse and apply style declaration from InputStream stream.
CSSStyleDeclaration	parseAndApplyStyleDeclaration(Object node, Reader reader)	Parse and apply style declaration from Reader reader.
CSSStyleDeclaration	parseAndApplyStyleDeclaration(Object node, String style)	Parse and apply style declaration from String style.
CSSValue	parsePropertyValue(InputStream stream)	Parse CSSValue from InputStream stream.
CSSValue	parsePropertyValue(Reader reader)	Parse CSSValue from Reader reader.
CSSValue	parsePropertyValue(String value)	Parse CSSValue from String value.
Selectors.SelectorList	parseSelectors(InputStream stream)	Parse Selectors from InputStream.
Selectors.SelectorList	parseSelectors(Reader reader)	Parse Selectors from String value.
Selectors.SelectorList	parseSelectors(String selector)	Parse Selectors from String value.
CSSStyleDeclaration	parseStyleDeclaration(InputStream stream)	Parse style declaration from InputStream stream.
CSSStyleDeclaration	parseStyleDeclaration(Reader reader)	Parse style declaration from Reader reader.
CSSStyleDeclaration	parseStyleDeclaration(String style)	Parse style declaration from String style.
CSSStyleSheetImpl	parseStyleSheet(InputStream stream)	Parse style sheet from InputStream stream.
CSSStyleSheetImpl	parseStyleSheet(InputStream stream, String uri)	Parse style sheet from InputStream stream, using uri as the base location for resolving relative @import rules.
CSSStyleSheetImpl	parseStyleSheet(Reader reader)	Parse style sheet from Reader reader.
void	registerCSSPropertyHandlerProvider(ICSSPropertyHandlerProvider handlerProvider)
void	registerCSSValueConverter(ICSSValueConverter converter)	Register CSSValue converter ICSSValueConverter.
void	reset()	Reset all style sheet registered into CSS Engine.
String	retrieveCSSProperty(Object element, String property, String pseudo)	Retrieve String of CSSValue of the CSS property of the node.
void	setElementProvider(IElementProvider elementProvider)	Set IElementProvider registered used to retrieve w3c Element which wrap native widget.
void	setErrorHandler(CSSErrorHandler errorHandler)	Set the CSS Error Handler to manage exception.
protected void	setResourceRegistryKeyFactory(ResourceRegistryKeyFactory keyFactory)
void	setResourcesLocatorManager(IResourcesLocatorManager resourcesLocatorManager)	Set the IResourcesLocatorManager to use manage resources.
void	setResourcesRegistry(IResourcesRegistry resourcesRegistry)	Register IResourcesRegistry used to cache/dispose resources.
void	startStylingSession()
void	stopStylingSession()
void	unregisterCSSPropertyHandlerProvider(ICSSPropertyHandlerProvider handlerProvider)
void	unregisterCSSValueConverter(ICSSValueConverter converter)	Unregister CSSValue converter ICSSValueConverter.

Methods inherited from class Object

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

Methods inherited from interface CSSEngine

getViewCSS, reapply

Field Details

computeDefaultStyle

protected boolean computeDefaultStyle

propertyHandlerProviders

protected List<ICSSPropertyHandlerProvider> propertyHandlerProviders

An ordered list of ICSSPropertyHandlerProvider

Constructor Details

CSSEngineImpl

public CSSEngineImpl()

Method Details

parseStyleSheet

public CSSStyleSheetImpl parseStyleSheet(Reader reader)
                                  throws IOException

Description copied from interface: CSSEngine

Parse style sheet from Reader reader.

Specified by:

parseStyleSheet in interface CSSEngine

Throws:

IOException

parseStyleSheet

public CSSStyleSheetImpl parseStyleSheet(InputStream stream)
                                  throws IOException

Description copied from interface: CSSEngine

Parse style sheet from InputStream stream.

Specified by:

parseStyleSheet in interface CSSEngine

Throws:

IOException

parseStyleSheet

public CSSStyleSheetImpl parseStyleSheet(InputStream stream,
 String uri)
                                  throws IOException

Description copied from interface: CSSEngine

Parse style sheet from InputStream stream, using uri as the base location for resolving relative @import rules.

Specified by:

parseStyleSheet in interface CSSEngine

Throws:

IOException

addStyleSheet

public void addStyleSheet(CSSStyleSheetImpl styleSheet)

Register a parsed stylesheet with this engine's cascade.

getStyleSheets

public List<CSSStyleSheetImpl> getStyleSheets()

The stylesheets registered with this engine, in registration order.

parseStyleDeclaration

public CSSStyleDeclaration parseStyleDeclaration(String style)

Description copied from interface: CSSEngine

Parse style declaration from String style.

Specified by:

parseStyleDeclaration in interface CSSEngine

parseStyleDeclaration

public CSSStyleDeclaration parseStyleDeclaration(Reader reader)
                                          throws IOException

Description copied from interface: CSSEngine

Parse style declaration from Reader reader.

Specified by:

parseStyleDeclaration in interface CSSEngine

Throws:

IOException

parseStyleDeclaration

public CSSStyleDeclaration parseStyleDeclaration(InputStream stream)
                                          throws IOException

Description copied from interface: CSSEngine

Parse style declaration from InputStream stream.

Specified by:

parseStyleDeclaration in interface CSSEngine

Throws:

IOException

parseSelectors

public Selectors.SelectorList parseSelectors(String selector)

Description copied from interface: CSSEngine

Parse Selectors from String value.

Specified by:

parseSelectors in interface CSSEngine

parseSelectors

public Selectors.SelectorList parseSelectors(Reader reader)
                                      throws IOException

Description copied from interface: CSSEngine

Parse Selectors from String value.

Specified by:

parseSelectors in interface CSSEngine

Throws:

IOException

parseSelectors

public Selectors.SelectorList parseSelectors(InputStream stream)
                                      throws IOException

Description copied from interface: CSSEngine

Parse Selectors from InputStream.

Specified by:

parseSelectors in interface CSSEngine

Throws:

IOException

parsePropertyValue

public CSSValue parsePropertyValue(Reader reader)
                            throws IOException

Description copied from interface: CSSEngine

Parse CSSValue from Reader reader.

Specified by:

parsePropertyValue in interface CSSEngine

Throws:

IOException

parsePropertyValue

public CSSValue parsePropertyValue(InputStream stream)
                            throws IOException

Description copied from interface: CSSEngine

Parse CSSValue from InputStream stream.

Specified by:

parsePropertyValue in interface CSSEngine

Throws:

IOException

parsePropertyValue

public CSSValue parsePropertyValue(String value)

Description copied from interface: CSSEngine

Parse CSSValue from String value.

Specified by:

parsePropertyValue in interface CSSEngine

startStylingSession

public void startStylingSession()

stopStylingSession

public void stopStylingSession()

isElementStyled

public boolean isElementStyled(Object element)

markElementStyled

public void markElementStyled(Object element)

applyStyles

public void applyStyles(Object element,
 boolean applyStylesToChildNodes)

Description copied from interface: CSSEngine

Apply styles to the Object node (SWT Text,...). If applyStylesToChildNodes is true, apply styles to the child nodes (ex : if node is SWT Composite, styles are applied to the child controls too).

Specified by:

applyStyles in interface CSSEngine

applyStyles

public void applyStyles(Object element,
 boolean applyStylesToChildNodes,
 boolean computeDefaultStyle)

Description copied from interface: CSSEngine

Apply styles to the Object node (SWT Text,...). If applyStylesToChildNodes is true, apply styles to the child nodes (ex : if node is SWT Composite, styles are applied to the child controls too). If computeDefaultStyle is true, default style is computed before apply styles.

Specified by:

applyStyles in interface CSSEngine

isVisible

protected boolean isVisible(Element elt)

Allow the CSS engine to skip particular elements if they are not visible. Elements need to be restyled when they become visible.

Returns:

true if the element is visible, false if not visible.

getStaticPseudoInstances

protected String[] getStaticPseudoInstances(Element element)

onStylesAppliedToChildNodes

protected void onStylesAppliedToChildNodes(Element element,
 NodeList nodes)

Callback method called when styles applied of nodes children of the element.

applyStyleDeclaration

public void applyStyleDeclaration(Object element,
 CSSStyleDeclaration style,
 String pseudo)

Description copied from interface: CSSEngine

Apply style declaration to the object node.

Specified by:

applyStyleDeclaration in interface CSSEngine

parseAndApplyStyleDeclaration

public CSSStyleDeclaration parseAndApplyStyleDeclaration(Object node,
 Reader reader)
                                                  throws IOException

Description copied from interface: CSSEngine

Parse and apply style declaration from Reader reader.

Specified by:

parseAndApplyStyleDeclaration in interface CSSEngine

Throws:

IOException

parseAndApplyStyleDeclaration

public CSSStyleDeclaration parseAndApplyStyleDeclaration(Object node,
 InputStream stream)
                                                  throws IOException

Description copied from interface: CSSEngine

Parse and apply style declaration from InputStream stream.

Specified by:

parseAndApplyStyleDeclaration in interface CSSEngine

Throws:

IOException

parseAndApplyStyleDeclaration

public CSSStyleDeclaration parseAndApplyStyleDeclaration(Object node,
 String style)
                                                  throws IOException

Description copied from interface: CSSEngine

Parse and apply style declaration from String style.

Specified by:

parseAndApplyStyleDeclaration in interface CSSEngine

Throws:

IOException

applyInlineStyle

public void applyInlineStyle(Object node,
 boolean applyStylesToChildNodes)

Description copied from interface: CSSEngine

Apply inline style of the object node. If applyStylesToChildNodes is true, apply style inline to the child nodes (ex : if node is SWT Composite, styles are applied to the child controls too).

Specified by:

applyInlineStyle in interface CSSEngine

getDefaultStyleDeclaration

public CSSStyleDeclaration getDefaultStyleDeclaration(Object element,
 String pseudoE)

Description copied from interface: CSSEngine

Get default CSSStyleDeclaration of the node for pseudo element pseudoE which can be null.

Specified by:

getDefaultStyleDeclaration in interface CSSEngine

getDefaultStyleDeclaration

public CSSStyleDeclaration getDefaultStyleDeclaration(Object widget,
 CSSStyleDeclaration newStyle,
 String pseudoE)

applyDefaultStyleDeclaration

public void applyDefaultStyleDeclaration(Object element,
 boolean applyStylesToChildNodes)

Description copied from interface: CSSEngine

Apply initial style of the object node. If applyStylesToChildNodes is true, apply style inline to the child nodes (ex : if node is SWT Composite, styles are applied to the child controls too).

Specified by:

applyDefaultStyleDeclaration in interface CSSEngine

applyDefaultStyleDeclaration

public void applyDefaultStyleDeclaration(Object element,
 boolean applyStylesToChildNodes,
 CSSStyleDeclaration newStyle,
 String pseudoE)

applyCSSProperty

public ICSSPropertyHandler applyCSSProperty(Object element,
 String property,
 CSSValue value,
 String pseudo)
                                     throws Exception

Delegates the handle method.

Specified by:

applyCSSProperty in interface CSSEngine

Parameters:

element - may be a widget or a node or some object

Throws:

Exception

retrieveCSSProperty

public String retrieveCSSProperty(Object element,
 String property,
 String pseudo)

Description copied from interface: CSSEngine

Retrieve String of CSSValue of the CSS property of the node.

Specified by:

retrieveCSSProperty in interface CSSEngine

getCSSCompositePropertiesNames

public String[] getCSSCompositePropertiesNames(String property)

Description copied from interface: CSSEngine

Return array of CSS property name of the CSS property.

Specified by:

getCSSCompositePropertiesNames in interface CSSEngine

getCSSPropertyHandlers

protected Collection<ICSSPropertyHandler> getCSSPropertyHandlers(String property)
                                                          throws Exception

Throws:

Exception

getCSSProperties

public Collection<String> getCSSProperties(Object element)

Return the set of property names and handlers for the provided node.

Specified by:

getCSSProperties in interface CSSEngine

Parameters:

element - the DOM node or an element

Returns:

the property names and handlers

getElementProvider

public IElementProvider getElementProvider()

Description copied from interface: CSSEngine

Get IElementProvider registered used to retrieve w3c Element which wrap native widget.

Specified by:

getElementProvider in interface CSSEngine

setElementProvider

public void setElementProvider(IElementProvider elementProvider)

Description copied from interface: CSSEngine

Set IElementProvider registered used to retrieve w3c Element which wrap native widget.

Specified by:

setElementProvider in interface CSSEngine

getElement

public Element getElement(Object element)

Return the w3c Element linked to the Object element.

Specified by:

getElement in interface CSSEngine

hookNativeWidget

protected void hookNativeWidget(Object widget)

Called when an element context is created for a native widget and registered with this engine. Subclasses should override and install a listener on the widget that will call handleWidgetDisposed(Object) when the widget is disposed.

The default implementation of this method does nothing.

Parameters:

widget - the native widget to hook

handleWidgetDisposed

public void handleWidgetDisposed(Object widget)

Called when a widget is disposed. Removes the element context from the element contexts map and the widgets map. Overriding classes must call the super implementation.

Specified by:

handleWidgetDisposed in interface CSSEngine

Parameters:

widget - The widget that gets disposed.

getCSSElementContext

public CSSElementContext getCSSElementContext(Object element)

Description copied from interface: CSSEngine

Get the CSSElementContext context of the object node.

Specified by:

getCSSElementContext in interface CSSEngine

getNativeWidget

public Object getNativeWidget(Object element)

getElementsContext

protected Map<Object, CSSElementContext> getElementsContext()

matches

public boolean matches(Selectors.Selector selector,
 Object element,
 String pseudoElt)

Description copied from interface: CSSEngine

Check if the selector matches the object node.

Specified by:

matches in interface CSSEngine

handleExceptions

public void handleExceptions(Exception e)

Handle exceptions thrown while parsing, applying styles. By default this method call CSS Error Handler if it is initialized.

Specified by:

handleExceptions in interface CSSEngine

getErrorHandler

public CSSErrorHandler getErrorHandler()

Description copied from interface: CSSEngine

Return CSSErrorHandler used to handles exception error.

Specified by:

getErrorHandler in interface CSSEngine

setErrorHandler

public void setErrorHandler(CSSErrorHandler errorHandler)

Set the CSS Error Handler to manage exception.

Specified by:

setErrorHandler in interface CSSEngine

getResourcesLocatorManager

public IResourcesLocatorManager getResourcesLocatorManager()

Description copied from interface: CSSEngine

Get the IResourcesLocatorManager to use manage resources.

Specified by:

getResourcesLocatorManager in interface CSSEngine

setResourcesLocatorManager

public void setResourcesLocatorManager(IResourcesLocatorManager resourcesLocatorManager)

Description copied from interface: CSSEngine

Set the IResourcesLocatorManager to use manage resources.

Specified by:

setResourcesLocatorManager in interface CSSEngine

computeStyle

public CSSStyleDeclaration computeStyle(Element elt,
 String pseudoElt)

Description copied from interface: CSSEngine

Compute the merged style declaration for the given element and pseudo element from all stylesheets registered with this engine.

Specified by:

computeStyle in interface CSSEngine

dispose

public void dispose()

Description copied from interface: CSSEngine

Call reset and dispose all resources

Specified by:

dispose in interface CSSEngine

reset

public void reset()

Description copied from interface: CSSEngine

Reset all style sheet registered into CSS Engine. This method must be called if you want parse and apply new StyleSheet and remove the old StyleSheet parsed.

Specified by:

reset in interface CSSEngine

getResourcesRegistry

public IResourcesRegistry getResourcesRegistry()

Description copied from interface: CSSEngine

Get the IResourcesRegistry registered used to cache/dispose resources.

Specified by:

getResourcesRegistry in interface CSSEngine

setResourcesRegistry

public void setResourcesRegistry(IResourcesRegistry resourcesRegistry)

Description copied from interface: CSSEngine

Register IResourcesRegistry used to cache/dispose resources.

Specified by:

setResourcesRegistry in interface CSSEngine

registerCSSPropertyHandlerProvider

public void registerCSSPropertyHandlerProvider(ICSSPropertyHandlerProvider handlerProvider)

unregisterCSSPropertyHandlerProvider

public void unregisterCSSPropertyHandlerProvider(ICSSPropertyHandlerProvider handlerProvider)

registerCSSValueConverter

public void registerCSSValueConverter(ICSSValueConverter converter)

Description copied from interface: CSSEngine

Register CSSValue converter ICSSValueConverter.

Specified by:

registerCSSValueConverter in interface CSSEngine

unregisterCSSValueConverter

public void unregisterCSSValueConverter(ICSSValueConverter converter)

Description copied from interface: CSSEngine

Unregister CSSValue converter ICSSValueConverter.

Specified by:

unregisterCSSValueConverter in interface CSSEngine

getCSSValueConverter

public ICSSValueConverter getCSSValueConverter(Object toType)

Description copied from interface: CSSEngine

Get CSSValue converter ICSSValueConverter which is enable to convert toType Object.

Specified by:

getCSSValueConverter in interface CSSEngine

convert

public Object convert(CSSValue value,
 Object toType,
 Object context)
               throws Exception

Description copied from interface: CSSEngine

Convert CSSValue into Object type of toType. (ex : convert CSSValue color:red into java.awt.Color). If IResourcesRegistry is registered into CSSEngine this method search before into cache of IResourcesRegistry if the Object was already converted.

Specified by:

convert in interface CSSEngine

Parameters:

context - can be null. For SWT context is org.eclipse.swt.widgets.Display.

Throws:

Exception

convert

public String convert(Object value,
 Object toType,
 Object context)
               throws Exception

Description copied from interface: CSSEngine

Convert Object type of toType into CSSValue String.

Specified by:

convert in interface CSSEngine

Throws:

Exception

setResourceRegistryKeyFactory

protected void setResourceRegistryKeyFactory(ResourceRegistryKeyFactory keyFactory)