Adobe® Flex® 4 Language Reference
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flashx.textLayout.operations 
ClearFormatOperation 
Packageflashx.textLayout.operations
Classpublic class ClearFormatOperation
InheritanceClearFormatOperation Inheritance FlowTextOperation Inheritance FlowOperation Inheritance Object

Language Version: ActionScript 3.0
Runtime Versions: Flash Player 10, AIR 1.5

The ClearFormatOperation class encapsulates a way to undefine formats.

An UndefineFormatOperation undefines properties set in the leaf format to the text in the specified range (no change is made if the specified range is a single point). It undefines properties set in the paragraph format to any paragraphs at least partially within the range (or a single paragraph if the range is a single point). And it undefines properties set in the container format to any containers at least partially within the range (or a single container if the range is a single point).

View the examples

See also



Public Properties
 PropertyDefined By
 InheritedabsoluteEnd : int
The absolute end point of the range of text to which this operation is applied.
FlowTextOperation
 InheritedabsoluteStart : int
The absolute start point of the range of text to which this operation is applied.
FlowTextOperation
 InheritedbeginGeneration : uint
[read-only] The text flow generation before the operation.
FlowOperation
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
  containerFormat : flashx.textLayout.formats:ITextLayoutFormat
The format properties to undefine on the containers in the range.
ClearFormatOperation
 InheritedendGeneration : uint
[read-only] The text flow generation after the operation.
FlowOperation
  leafFormat : flashx.textLayout.formats:ITextLayoutFormat
The format properties to undefine on the leaf elements in the range.
ClearFormatOperation
 InheritedoriginalSelectionState : SelectionState
The selection state at the start of the operation.
FlowTextOperation
  paragraphFormat : flashx.textLayout.formats:ITextLayoutFormat
The format properties to undefine on the paragraphs in the range.
ClearFormatOperation
 Inheritedprototype : Object
[static] A reference to the prototype object of a class or function object.
Object
 InheritedtextFlow : flashx.textLayout.elements:TextFlow
The TextFlow object to which this operation is applied.
FlowOperation
 InheriteduserData : *
Arbitrary data associated with an element.
FlowOperation
Public Methods
 MethodDefined By
  
Creates an ClearFormatOperation object.
ClearFormatOperation
 Inherited
Test if this operation be placed on the undo stack.
FlowOperation
 Inherited
Executes the operation.
FlowOperation
 Inherited
Indicates whether an object has a specified property defined.
Object
 Inherited
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
 Inherited
Indicates whether the specified property exists and is enumerable.
Object
  
[override]
ClearFormatOperation
 Inherited
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
Returns the string representation of this object, formatted according to locale-specific conventions.
Object
 Inherited
Returns the string representation of the specified object.
Object
 Inherited
Reverses the operation.
FlowOperation
 Inherited
Returns the primitive value of the specified object.
Object
Property Detail

containerFormat

property
containerFormat:flashx.textLayout.formats:ITextLayoutFormat

Language Version: ActionScript 3.0
Runtime Versions: Flash Player 10, AIR 1.5

The format properties to undefine on the containers in the range.

The formats of any containers at least partially within the range are updated. If the range of this operation is a point, then a single container is updated. If containerFormat is null, then no container formats are changed.



Implementation
    public function get containerFormat():flashx.textLayout.formats:ITextLayoutFormat
    public function set containerFormat(value:flashx.textLayout.formats:ITextLayoutFormat):void

leafFormat

property 
leafFormat:flashx.textLayout.formats:ITextLayoutFormat

Language Version: ActionScript 3.0
Runtime Versions: Flash Player 10, AIR 1.5

The format properties to undefine on the leaf elements in the range.

If the range of this operation is a point, or if leafFormat is null, then no leaf element formats are changed.



Implementation
    public function get leafFormat():flashx.textLayout.formats:ITextLayoutFormat
    public function set leafFormat(value:flashx.textLayout.formats:ITextLayoutFormat):void

paragraphFormat

property 
paragraphFormat:flashx.textLayout.formats:ITextLayoutFormat

Language Version: ActionScript 3.0
Runtime Versions: Flash Player 10, AIR 1.5

The format properties to undefine on the paragraphs in the range.

The formats of any paragraphs at least partially within the range are updated. If the range of this operation is a point, then a single paragraph is updated. If paragraphFormat is null, then no paragraph formats are changed.



Implementation
    public function get paragraphFormat():flashx.textLayout.formats:ITextLayoutFormat
    public function set paragraphFormat(value:flashx.textLayout.formats:ITextLayoutFormat):void
Constructor Detail

ClearFormatOperation

()Constructor
public function ClearFormatOperation(operationState:SelectionState, leafFormat:flashx.textLayout.formats:ITextLayoutFormat, paragraphFormat:flashx.textLayout.formats:ITextLayoutFormat, containerFormat:flashx.textLayout.formats:ITextLayoutFormat = null)

Language Version: ActionScript 3.0
Runtime Versions: Flash Player 10, AIR 1.5

Creates an ClearFormatOperation object.

Parameters
operationState:SelectionState — Defines the text range to which the format is applied.
 
leafFormat:flashx.textLayout.formats:ITextLayoutFormat — The format whose set values indicate properties to undefine to LeafFlowElement objects in the selected range.
 
paragraphFormat:flashx.textLayout.formats:ITextLayoutFormat — The format whose set values indicate properties to undefine to ParagraphElement objects in the selected range.
 
containerFormat:flashx.textLayout.formats:ITextLayoutFormat (default = null) — The format whose set values indicate properties to undefine to ContainerController objects in the selected range.
Method Detail

redo

()method
override public function redo():SelectionState

Returns
SelectionState
ApplyFormatOperation_example.as

This code snippet shows a use of the ApplyFormatOperation class. After an operation of this type is executed, the font size of the new TextLayoutFormat is gathered, which can be used to update a display label or menu.

package flashx.textLayout.operations.examples
{
    import flashx.textLayout.elements.TextFlow;
    import flashx.textLayout.events.FlowOperationEvent;
    import flashx.textLayout.operations.ApplyFormatOperation;
    
    public class ApplyFormatOperation_example
    {
        public function attach(textFlow:TextFlow):void
        {
            textFlow.addEventListener(FlowOperationEvent.FLOW_OPERATION_BEGIN, opEndHandler);
        }
        
        public function opEndHandler(evt:FlowOperationEvent):void { 
            var flowOp:ApplyFormatOperation = evt.operation as ApplyFormatOperation; 
            if (flowOp is ApplyFormatOperation && flowOp.leafFormat != null && evt.cancelable) {
                //determine the font size - can be used to update a menu or label
                var fSize:int = flowOp.leafFormat.fontSize;
                if (fSize > 18)
                    evt.preventDefault();
            }
        }
    }
        


}