Utilities (Charba - J2CL and GWT charts library based on CHART.JS)

java.lang.Object
- org.pepstock.charba.client.utils.Utilities

```
public final class Utilities
extends Object
```
Sets of methods used as common utilities.

Author:

Andrea "Stock" Stocchero

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static String`	`applyPrecision(double value, int precision)` Converts a double in the a string setting the decimals places to maintain.
`static String`	`applyTemplate(String template, Object... values)` Creates a string in order to change a template filling with the replacements. The replacement must be set as following:
`static CursorType`	`getCursorOfChart(IsChart chart)` Returns the cursor currently set in the chart.
`static String`	`getImageURLFromCanvasPattern(CanvasPatternItem pattern, int width, int height)` Returns a data URL for the current content of a canvas pattern instance.
`static String`	`toCSSBackgroundProperty(Gradient gradient)` Returns the CSS syntax to represent the gradient. The dimension of canvas pattern image will be the dimension of pattern.
`static String`	`toCSSBackgroundProperty(Img image)` Returns a URL CSS property for the current content of an image element instance.
`static String`	`toCSSBackgroundProperty(Pattern pattern)` Returns the CSS syntax to represent the pattern. The dimension of canvas pattern image will be the dimension of pattern.
`static String`	`toCSSBackgroundProperty(Pattern pattern, int squareSize)` Returns the CSS syntax to represent the pattern. The dimension of canvas pattern image is unique then the image of pattern is a square.
`static String`	`toCSSBackgroundProperty(Pattern pattern, int width, int height)` Returns the CSS syntax to represent the pattern.
`static String`	`toCSSBackgroundProperty(String dataUrl)` Returns a URL CSS property for the data URL for the current content of the canvas element.
`static String`	`toCSSBackgroundProperty(String dataUrl, Repetition repetition)` Returns a URL CSS property for the data URL for the current content of the canvas element.
`static String`	`toCSSBorderRadiusProperty(BorderRadiusItem borderRadius)` Builds the border radius string (shorthand property of CSS font) to use in the canvas object or in DOM element. The format is [top-left \| top-right \| bottom-right \| bottom-left].
`static Img`	`toImageElement(String url)` Creates a image element by a data URL which is a URI scheme that provides a way to in-line data in a document, and it's commonly used to embed images in HTML and CSS.
`static Img`	`toImageElement(String url, int width, int height)` Creates a image element by a data URL which is a URI scheme that provides a way to in-line data in a document, and it's commonly used to embed images in HTML and CSS, forcing the size.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - toCSSBackgroundProperty
```
public static String toCSSBackgroundProperty(Pattern pattern)
```
    Returns the CSS syntax to represent the pattern.
    The dimension of canvas pattern image will be the dimension of pattern.
    
    Parameters:
    
    pattern - object to export in the CSS
    
    Returns:
    
    the CSS syntax to represent the pattern
  - toCSSBackgroundProperty
```
public static String toCSSBackgroundProperty(Pattern pattern,
                                             int squareSize)
```
    Returns the CSS syntax to represent the pattern.
    The dimension of canvas pattern image is unique then the image of pattern is a square.
    
    Parameters:
    
    pattern - object to export in the CSS
    
    squareSize - size of image applied to canvasPattern to be a square
    
    Returns:
    
    the CSS syntax to represent the pattern
  - toCSSBackgroundProperty
```
public static String toCSSBackgroundProperty(Pattern pattern,
                                             int width,
                                             int height)
```
    Returns the CSS syntax to represent the pattern.
    
    Parameters:
    
    pattern - object to export in the CSS
    
    width - width of image applied to canvasPattern
    
    height - height of image applied to canvasPattern
    
    Returns:
    
    the CSS syntax to represent the pattern
  - toCSSBackgroundProperty
```
public static String toCSSBackgroundProperty(String dataUrl)
```
    Returns a URL CSS property for the data URL for the current content of the canvas element.
    
    Parameters:
    
    dataUrl - the data URL for the current content of the canvas element
    
    Returns:
    
    a URL CSS property for the current content of the canvas element
  - toCSSBackgroundProperty
```
public static String toCSSBackgroundProperty(String dataUrl,
                                             Repetition repetition)
```
    Returns a URL CSS property for the data URL for the current content of the canvas element.
    
    Parameters:
    
    dataUrl - the data URL for the current content of the canvas element
    
    repetition - repetition of image
    
    Returns:
    
    a URL CSS property for the current content of the canvas element
  - toCSSBackgroundProperty
```
public static String toCSSBackgroundProperty(Img image)
```
    Returns a URL CSS property for the current content of an image element instance.
    
    Parameters:
    
    image - image element instance to fet as CSS property
    
    Returns:
    
    a URL CSS property for the current content of the image
  - toCSSBorderRadiusProperty
```
public static String toCSSBorderRadiusProperty(BorderRadiusItem borderRadius)
```
    Builds the border radius string (shorthand property of CSS font) to use in the canvas object or in DOM element.
    The format is [top-left | top-right | bottom-right | bottom-left].
    
    Parameters:
    
    borderRadius - border radius item to use
    
    Returns:
    
    the border radius string to use in the canvas object or in DOM element.
  - getImageURLFromCanvasPattern
```
public static String getImageURLFromCanvasPattern(CanvasPatternItem pattern,
                                                  int width,
                                                  int height)
```
    Returns a data URL for the current content of a canvas pattern instance.
    
    Parameters:
    
    pattern - canvas pattern instance
    
    width - width of canvas applied to canvasPattern
    
    height - height of image applied to canvasPattern
    
    Returns:
    
    a data URL for the current content of the canvas pattern
  - toCSSBackgroundProperty
```
public static String toCSSBackgroundProperty(Gradient gradient)
```
    Returns the CSS syntax to represent the gradient.
    The dimension of canvas pattern image will be the dimension of pattern.
    
    Parameters:
    
    gradient - object to export in the CSS
    
    Returns:
    
    the CSS syntax to represent the gradient
  - toImageElement
```
public static Img toImageElement(String url)
```
    Creates a image element by a data URL which is a URI scheme that provides a way to in-line data in a document, and it's commonly used to embed images in HTML and CSS.
    
    Parameters:
    
    url - a URI scheme that provides a way to in-line data
    
    Returns:
    
    a image element or null if argument is not consistent
  - toImageElement
```
public static Img toImageElement(String url,
                                 int width,
                                 int height)
```
    Creates a image element by a data URL which is a URI scheme that provides a way to in-line data in a document, and it's commonly used to embed images in HTML and CSS, forcing the size.
    
    Parameters:
    
    url - a URI scheme that provides a way to in-line data
    
    width - width of image
    
    height - height of image
    
    Returns:
    
    a image element or null if argument is not consistent
  - getCursorOfChart
```
public static CursorType getCursorOfChart(IsChart chart)
```
    Returns the cursor currently set in the chart.
    
    Parameters:
    
    chart - chart instance
    
    Returns:
    
    the cursor currently set in the chart.
  - applyTemplate
```
public static String applyTemplate(String template,
                                   Object... values)
```
    Creates a string in order to change a template filling with the replacements.
    The replacement must be set as following:
```
 {0} ... {1} ... {n}
 
```
    where the value in the the brackets represents the index of the obecjt in the the array, passed as argument.
    Parameters:
    
    template - template of message
    
    values - values to apply in the template
    
    Returns:
    
    a string with the template filled by values
  - applyPrecision
```
public static String applyPrecision(double value,
                                    int precision)
```
    Converts a double in the a string setting the decimals places to maintain.
    
    Parameters:
    
    value - value to convert. If is Double.NaN, return Constants.NULL_STRING
    
    precision - decimals places to apply. If less than 0, uses 0
    
    Returns:
    
    a string which represents the double value

Class Utilities

Method Summary

Methods inherited from class java.lang.Object

Method Detail

toCSSBackgroundProperty

toCSSBackgroundProperty

toCSSBackgroundProperty

toCSSBackgroundProperty

toCSSBackgroundProperty

toCSSBackgroundProperty

toCSSBorderRadiusProperty

getImageURLFromCanvasPattern

toCSSBackgroundProperty

toImageElement

toImageElement

getCursorOfChart

applyTemplate

applyPrecision