CSS (cdp4j 3.0.5 API)

```
public interface CSS
```
This domain exposes CSS read/write operations All CSS objects (stylesheets, rules, and styles) have an associated id used in subsequent operations on the related object Each object type has a specific id structure, and those are not interchangeable between objects of different kinds CSS objects can be loaded using the get*ForNode() calls (which accept a DOM node id) A client can also keep track of stylesheets via the styleSheetAdded styleSheetRemoved events and subsequently load the required stylesheet contents using the getStyleSheet[Text]() methods

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`CSSRule`	`addRule(String styleSheetId, String ruleText, SourceRange location)`	Inserts a new rule with the given `ruleText`in a stylesheet with given`styleSheetId`, at the position specified by `location`.
`List<String>`	`collectClassNames(String styleSheetId)`	Returns all class names from specified stylesheet.
`String`	`createStyleSheet(String frameId)`	Creates a new special "via-inspector" stylesheet in the frame with given `frameId`.
`void`	`disable()`	Disables the CSS agent for the given page.
`void`	`enable()`	Enables the CSS agent for the given page.
`void`	`forcePseudoState(Integer nodeId, List<String> forcedPseudoClasses)`	Ensures that the given node will have specified pseudo-classes whenever its style is computed by the browser.
`GetBackgroundColorsResult`	`getBackgroundColors(Integer nodeId)`
`List<CSSComputedStyleProperty>`	`getComputedStyleForNode(Integer nodeId)`	Returns the computed style for a DOM node identified by `nodeId`.
`GetInlineStylesForNodeResult`	`getInlineStylesForNode(Integer nodeId)`	Returns the styles defined inline (explicitly in the "style" attribute and implicitly, using DOM attributes) for a DOM node identified by `nodeId`.
`GetMatchedStylesForNodeResult`	`getMatchedStylesForNode(Integer nodeId)`	Returns requested styles for a DOM node identified by `nodeId`.
`List<CSSMedia>`	`getMediaQueries()`	Returns all media queries parsed by the rendering engine.
`List<PlatformFontUsage>`	`getPlatformFontsForNode(Integer nodeId)`	Requests information about platform fonts which we used to render child TextNodes in the given node.
`String`	`getStyleSheetText(String styleSheetId)`	Returns the current textual content for a stylesheet.
`void`	`setEffectivePropertyValueForNode(Integer nodeId, String propertyName, String value)`	Find a rule with the given active property for the given node and set the new value for this property
`Value`	`setKeyframeKey(String styleSheetId, SourceRange range, String keyText)`	Modifies the keyframe rule key text.
`CSSMedia`	`setMediaText(String styleSheetId, SourceRange range, String text)`	Modifies the rule selector.
`SelectorList`	`setRuleSelector(String styleSheetId, SourceRange range, String selector)`	Modifies the rule selector.
`String`	`setStyleSheetText(String styleSheetId, String text)`	Sets the new stylesheet text.
`List<CSSStyle>`	`setStyleTexts(List<StyleDeclarationEdit> edits)`	Applies specified style edits one after another in the given order.
`void`	`startRuleUsageTracking()`	Enables the selector recording.
`List<RuleUsage>`	`stopRuleUsageTracking()`	Stop tracking rule usage and return the list of rules that were used since last call to `takeCoverageDelta` (or since start of coverage instrumentation)
`List<RuleUsage>`	`takeCoverageDelta()`	Obtain list of rules that became used since last call to this method (or since start of coverage instrumentation)

- Method Detail
  - addRule
```
CSSRule addRule(String styleSheetId,
                String ruleText,
                SourceRange location)
```
    Inserts a new rule with the given ruleTextin a stylesheet with givenstyleSheetId, at the position specified by location.
    
    Parameters:
    
    styleSheetId - The css style sheet identifier where a new rule should be inserted.
    
    ruleText - The text of a new rule.
    
    location - Text position of a new rule in the target style sheet.
    
    Returns:
    
    The newly created rule.
  - collectClassNames
```
List<String> collectClassNames(String styleSheetId)
```
    Returns all class names from specified stylesheet.
    
    Returns:
    
    Class name list.
  - createStyleSheet
```
String createStyleSheet(String frameId)
```
    Creates a new special "via-inspector" stylesheet in the frame with given frameId.
    
    Parameters:
    
    frameId - Identifier of the frame where "via-inspector" stylesheet should be created.
    
    Returns:
    
    Identifier of the created "via-inspector" stylesheet.
  - disable
```
void disable()
```
    Disables the CSS agent for the given page.
  - enable
```
void enable()
```
    Enables the CSS agent for the given page. Clients should not assume that the CSS agent has been enabled until the result of this command is received.
  - forcePseudoState
```
void forcePseudoState(Integer nodeId,
                      List<String> forcedPseudoClasses)
```
    Ensures that the given node will have specified pseudo-classes whenever its style is computed by the browser.
    
    Parameters:
    
    nodeId - The element id for which to force the pseudo state.
    
    forcedPseudoClasses - Element pseudo classes to force when computing the element's style.
  - getBackgroundColors
```
GetBackgroundColorsResult getBackgroundColors(Integer nodeId)
```
    Returns:
    
    GetBackgroundColorsResult
  - getComputedStyleForNode
```
List<CSSComputedStyleProperty> getComputedStyleForNode(Integer nodeId)
```
    Returns the computed style for a DOM node identified by nodeId.
    
    Returns:
    
    Computed style for the specified DOM node.
  - getInlineStylesForNode
```
GetInlineStylesForNodeResult getInlineStylesForNode(Integer nodeId)
```
    Returns the styles defined inline (explicitly in the "style" attribute and implicitly, using DOM attributes) for a DOM node identified by nodeId.
    
    Returns:
    
    GetInlineStylesForNodeResult
  - getMatchedStylesForNode
```
GetMatchedStylesForNodeResult getMatchedStylesForNode(Integer nodeId)
```
    Returns requested styles for a DOM node identified by nodeId.
    
    Returns:
    
    GetMatchedStylesForNodeResult
  - getMediaQueries
```
List<CSSMedia> getMediaQueries()
```
    Returns all media queries parsed by the rendering engine.
  - getPlatformFontsForNode
```
List<PlatformFontUsage> getPlatformFontsForNode(Integer nodeId)
```
    Requests information about platform fonts which we used to render child TextNodes in the given node.
    
    Returns:
    
    Usage statistics for every employed platform font.
  - getStyleSheetText
```
String getStyleSheetText(String styleSheetId)
```
    Returns the current textual content for a stylesheet.
    
    Returns:
    
    The stylesheet text.
  - setEffectivePropertyValueForNode
```
void setEffectivePropertyValueForNode(Integer nodeId,
                                      String propertyName,
                                      String value)
```
    Find a rule with the given active property for the given node and set the new value for this property
    
    Parameters:
    
    nodeId - The element id for which to set property.
  - setKeyframeKey
```
Value setKeyframeKey(String styleSheetId,
                     SourceRange range,
                     String keyText)
```
    Modifies the keyframe rule key text.
    
    Returns:
    
    The resulting key text after modification.
  - setMediaText
```
CSSMedia setMediaText(String styleSheetId,
                      SourceRange range,
                      String text)
```
    Modifies the rule selector.
    
    Returns:
    
    The resulting CSS media rule after modification.
  - setRuleSelector
```
SelectorList setRuleSelector(String styleSheetId,
                             SourceRange range,
                             String selector)
```
    Modifies the rule selector.
    
    Returns:
    
    The resulting selector list after modification.
  - setStyleSheetText
```
String setStyleSheetText(String styleSheetId,
                         String text)
```
    Sets the new stylesheet text.
    
    Returns:
    
    URL of source map associated with script (if any).
  - setStyleTexts
```
List<CSSStyle> setStyleTexts(List<StyleDeclarationEdit> edits)
```
    Applies specified style edits one after another in the given order.
    
    Returns:
    
    The resulting styles after modification.
  - startRuleUsageTracking
```
void startRuleUsageTracking()
```
    Enables the selector recording.
  - stopRuleUsageTracking
```
List<RuleUsage> stopRuleUsageTracking()
```
    Stop tracking rule usage and return the list of rules that were used since last call to takeCoverageDelta (or since start of coverage instrumentation)
  - takeCoverageDelta
```
List<RuleUsage> takeCoverageDelta()
```
    Obtain list of rules that became used since last call to this method (or since start of coverage instrumentation)

Interface CSS

Method Summary

Method Detail

addRule

collectClassNames

createStyleSheet

disable

enable

forcePseudoState

getBackgroundColors

getComputedStyleForNode

getInlineStylesForNode

getMatchedStylesForNode

getMediaQueries

getPlatformFontsForNode

getStyleSheetText

setEffectivePropertyValueForNode

setKeyframeKey

setMediaText

setRuleSelector

setStyleSheetText

setStyleTexts

startRuleUsageTracking

stopRuleUsageTracking

takeCoverageDelta