org.zkoss.zul
Class Spinner

java.lang.Object
  extended by org.zkoss.zk.ui.AbstractComponent
      extended by org.zkoss.zk.ui.HtmlBasedComponent
          extended by org.zkoss.zul.impl.XulElement
              extended by org.zkoss.zul.impl.InputElement
                  extended by org.zkoss.zul.impl.FormatInputElement
                      extended by org.zkoss.zul.impl.NumberInputElement
                          extended by org.zkoss.zul.Spinner
All Implemented Interfaces:
java.io.Serializable, java.lang.Cloneable, Component, Disable, Readonly, Scope, ComponentCtrl, Constrainted

public class Spinner
extends NumberInputElement

An edit box for holding a constrained integer.

Default getZclass(): z-spinner.

spinner supports below key events.

Since:
3.5.0
Author:
gracelin
See Also:
Serialized Form

Nested Class Summary
 
Nested classes/interfaces inherited from class org.zkoss.zk.ui.HtmlBasedComponent
HtmlBasedComponent.ExtraCtrl
 
Nested classes/interfaces inherited from class org.zkoss.zk.ui.AbstractComponent
AbstractComponent.Children
 
Field Summary
 
Fields inherited from class org.zkoss.zul.impl.InputElement
_value
 
Fields inherited from class org.zkoss.zk.ui.HtmlBasedComponent
_zclass
 
Fields inherited from interface org.zkoss.zk.ui.Component
APPLICATION_SCOPE, COMPONENT_SCOPE, DESKTOP_SCOPE, PAGE_SCOPE, REQUEST_SCOPE, SESSION_SCOPE, SPACE_SCOPE
 
Fields inherited from interface org.zkoss.zk.ui.sys.ComponentCtrl
CE_BUSY_IGNORE, CE_DUPLICATE_IGNORE, CE_IMPORTANT, CE_NON_DEFERRABLE, CE_REPEAT_IGNORE
 
Constructor Summary
Spinner()
           
Spinner(int value)
           
 
Method Summary
protected  java.lang.Object coerceFromString(java.lang.String value)
          Coerces the value passed to InputElement.setText(java.lang.String).
protected  java.lang.String coerceToString(java.lang.Object value)
          Coerces the value passed to InputElement.setText(java.lang.String).
 int getStep()
          Return the step of spinner
protected  java.lang.Object getTargetValue()
          Returns the value in the targeting type.
 java.lang.Integer getValue()
          Returns the value (in Integer), might be null unless a constraint stops it.
 java.lang.String getZclass()
          Returns the ZK Cascading Style class(es) for this component.
 int intValue()
          Returns the value in integer.
 boolean isButtonVisible()
          Returns whether the button (on the right of the textbox) is visible.
protected  void renderProperties(ContentRenderer renderer)
          Renders the content of this component, excluding the enclosing tags and children.
 void setButtonVisible(boolean visible)
          Sets whether the button (on the right of the textbox) is visible.
 void setConstraint(java.lang.String constr)
           
 void setStep(int step)
          Set the step of spinner
 void setValue(java.lang.Integer value)
          Sets the value (in Integer).
 
Methods inherited from class org.zkoss.zul.impl.NumberInputElement
formatNumber, getDefaultFormat, getDefaultLocale, getLocale, getRoundingMode, setLocale, setLocale, setRoundingMode, setRoundingMode, toNumberOnly
 
Methods inherited from class org.zkoss.zul.impl.FormatInputElement
getFormat, getRealFormat, setFormat
 
Methods inherited from class org.zkoss.zul.impl.InputElement
checkUserError, clearErrorMessage, clearErrorMessage, clone, getCols, getConstraint, getErrorMessage, getInstant, getMaxlength, getName, getPlaceholder, getRawText, getRawValue, getTabindex, getText, getType, isChildable, isDisabled, isInplace, isMultiline, isReadonly, isValid, marshall, onWrongValue, select, service, setCols, setConstraint, setDisabled, setErrorMessage, setInplace, setInstant, setMaxlength, setName, setPlaceholder, setRawValue, setReadonly, setSelectedText, setSelectionRange, setTabindex, setText, setValueDirectly, showCustomError, unmarshall, validate
 
Methods inherited from class org.zkoss.zul.impl.XulElement
getContext, getCtrlKeys, getPopup, getTooltip, setContext, setContext, setCtrlKeys, setPopup, setPopup, setTooltip, setTooltip
 
Methods inherited from class org.zkoss.zk.ui.HtmlBasedComponent
focus, getAction, getDraggable, getDroppable, getExtraCtrl, getHeight, getHflex, getLeft, getRenderdefer, getSclass, getStyle, getTooltiptext, getTop, getVflex, getWidth, getZindex, getZIndex, setAction, setClass, setDraggable, setDroppable, setFocus, setHeight, setHeightDirectly, setHflex, setHflexDirectly, setLeft, setLeftDirectly, setRenderdefer, setSclass, setStyle, setTooltiptext, setTop, setTopDirectly, setVflex, setWidth, setWidthDirectly, setZclass, setZindex, setZIndex, setZIndexDirectly
 
Methods inherited from class org.zkoss.zk.ui.AbstractComponent
addAnnotation, addAnnotation, addClientEvent, addEventHandler, addEventListener, addEventListener, addForward, addForward, addForward, addForward, addMoved, addScopeListener, addSharedEventHandlerMap, appendChild, applyProperties, beforeChildAdded, beforeChildRemoved, beforeParentChanged, detach, didActivate, didActivate, didDeserialize, didDeserialize, disableClientUpdate, equals, getAnnotatedProperties, getAnnotatedPropertiesBy, getAnnotation, getAnnotation, getAnnotations, getAnnotations, getAnnotations, getAttribute, getAttribute, getAttribute, getAttributeOrFellow, getAttributes, getAttributes, getAuService, getAutag, getChildren, getClientEvents, getDefaultMold, getDefinition, getDesktop, getEventHandler, getEventHandlerNames, getEventListenerMap, getEventListeners, getFellow, getFellow, getFellowIfAny, getFellowIfAny, getFellows, getFirstChild, getId, getLastChild, getListenerIterator, getMold, getNextSibling, getPage, getParent, getPreviousSibling, getRoot, getSpaceOwner, getStubonly, getTemplate, getTemplateNames, getUuid, getWidgetAttribute, getWidgetAttributeNames, getWidgetClass, getWidgetListener, getWidgetListenerNames, getWidgetOverride, getWidgetOverrideNames, hasAttribute, hasAttribute, hasAttribute, hasAttributeOrFellow, hasFellow, hasFellow, insertBefore, invalidate, isInvalidated, isListenerAvailable, isVisible, onChildAdded, onChildRemoved, onPageAttached, onPageDetached, query, queryAll, redraw, redrawChildren, removeAttribute, removeAttribute, removeAttribute, removeChild, removeEventListener, removeForward, removeForward, removeScopeListener, render, render, render, replace, response, response, response, service, sessionDidActivate, sessionWillPassivate, setAttribute, setAttribute, setAttribute, setAuService, setAutag, setDefinition, setDefinition, setId, setMold, setPage, setPageBefore, setParent, setStubonly, setStubonly, setTemplate, setVisible, setVisibleDirectly, setWidgetAttribute, setWidgetClass, setWidgetListener, setWidgetOverride, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdateWidgetListener, smartUpdateWidgetOverride, toString, updateByClient, willPassivate, willPassivate, willSerialize, willSerialize
 
Methods inherited from class java.lang.Object
finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

Spinner

public Spinner()

Spinner

public Spinner(int value)
        throws WrongValueException
Throws:
WrongValueException
Method Detail

getValue

public java.lang.Integer getValue()
                           throws WrongValueException
Returns the value (in Integer), might be null unless a constraint stops it.

Throws:
WrongValueException - if user entered a wrong value

intValue

public int intValue()
             throws WrongValueException
Returns the value in integer. If null, zero is returned.

Throws:
WrongValueException - if user entered a wrong value

getTargetValue

protected java.lang.Object getTargetValue()
                                   throws WrongValueException
Description copied from class: InputElement
Returns the value in the targeting type. It is used by the deriving class to implement the getValue method. For example, Intbox.getValue() is the same as this method except with a different signature.

It invokes InputElement.checkUserError() to ensure no user error.

Overrides:
getTargetValue in class InputElement
Throws:
WrongValueException - if the user entered a wrong value
See Also:
InputElement.getText()

setValue

public void setValue(java.lang.Integer value)
              throws WrongValueException
Sets the value (in Integer).

Throws:
WrongValueException - if value is wrong

getStep

public int getStep()
Return the step of spinner


setStep

public void setStep(int step)
Set the step of spinner


isButtonVisible

public boolean isButtonVisible()
Returns whether the button (on the right of the textbox) is visible.

Default: true.


setButtonVisible

public void setButtonVisible(boolean visible)
Sets whether the button (on the right of the textbox) is visible.


getZclass

public java.lang.String getZclass()
Description copied from class: HtmlBasedComponent
Returns the ZK Cascading Style class(es) for this component. It usually depends on the implementation of the mold (AbstractComponent.getMold()).

Default: null (the default value depends on element).

HtmlBasedComponent.setZclass(java.lang.String)) will completely replace the default style of a component. In other words, the default style of a component is associated with the default value of HtmlBasedComponent.getZclass(). Once it is changed, the default style won't be applied at all. If you want to perform small adjustments, use HtmlBasedComponent.setSclass(java.lang.String) instead.

Overrides:
getZclass in class HtmlBasedComponent
See Also:
HtmlBasedComponent.getSclass()

setConstraint

public void setConstraint(java.lang.String constr)
Overrides:
setConstraint in class InputElement
Parameters:
constr - a list of constraints separated by comma. Example: no positive, no zero

coerceFromString

protected java.lang.Object coerceFromString(java.lang.String value)
                                     throws WrongValueException
Description copied from class: InputElement
Coerces the value passed to InputElement.setText(java.lang.String).

Deriving note:
If you want to store the value in other type, say BigDecimal, you have to override InputElement.coerceToString(java.lang.Object) and InputElement.coerceFromString(java.lang.String) to convert between a string and your targeting type.

Moreover, when Textbox is called, it calls this method with value = null. Derives shall handle this case properly.

Specified by:
coerceFromString in class InputElement
Throws:
WrongValueException

coerceToString

protected java.lang.String coerceToString(java.lang.Object value)
Description copied from class: InputElement
Coerces the value passed to InputElement.setText(java.lang.String).

Default: convert null to an empty string.

Deriving note:
If you want to store the value in other type, say BigDecimal, you have to override InputElement.coerceToString(java.lang.Object) and InputElement.coerceFromString(java.lang.String) to convert between a string and your targeting type.

Specified by:
coerceToString in class InputElement

renderProperties

protected void renderProperties(ContentRenderer renderer)
                         throws java.io.IOException
Description copied from class: HtmlBasedComponent
Renders the content of this component, excluding the enclosing tags and children.

See also ZK Client-side Reference: Property Rendering

Overrides:
renderProperties in class NumberInputElement
Throws:
java.io.IOException


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