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Class Ext.grid.CellSelectionModel

Package:Ext.grid
Class:CellSelectionModel
Extends:AbstractSelectionModel
Defined In:CellSelectionModel.js
This class provides the basic implementation for cell selection in a grid.

Properties   -  Methods   -  Events

Public Properties

This class has no public properties.

Public Methods

Method Defined By
  CellSelectionModelObject config ) CellSelectionModel
  addEventsObject object ) : void Observable
Used to define events on this Observable
  addListenerString eventName, Function handler, [Object scope], [Object options] ) : void Observable
Appends an event handler to this component
  clearSelectionsBoolean true ) : void CellSelectionModel
Clears all selections.
  fireEventString eventName, Object... args ) : Boolean Observable
Fires the specified event with the passed parameters (minus the event name).
  getSelectedCell() : Object CellSelectionModel
Returns the currently selected cell,.
  hasListenerString eventName ) : Boolean Observable
Checks to see if this object has any listeners for a specified event
  hasSelection() : Boolean CellSelectionModel
Returns true if there is a selection.
  isLocked() : Boolean AbstractSelectionModel
Returns true if the selections are locked.
  lock() : void AbstractSelectionModel
Locks the selections.
  onString eventName, Function handler, [Object scope], [Object options] ) : void Observable
Appends an event handler to this element (shorthand for addListener)
  purgeListeners() : void Observable
Removes all listeners for this object
  removeListenerString eventName, Function handler, [Object scope] ) : void Observable
Removes a listener
  selectNumber rowIndex, Number collIndex ) : void CellSelectionModel
Selects a cell.
  unString eventName, Function handler, [Object scope] ) : void Observable
Removes a listener (shorthand for removeListener)
  unlock() : void AbstractSelectionModel
Unlocks the selections.

Public Events

Event Defined By
  beforerowselect : ( SelectionModel this, Number rowIndex, Number colIndex ) CellSelectionModel
Fires before a cell is selected.
  cellselect : ( SelectionModel this, Number rowIndex, Number colIndex ) CellSelectionModel
Fires when a cell is selected.
  selectionchange : ( SelectionModel this, Object selection ) CellSelectionModel
Fires when the active selection changes.

Constructor Details

CellSelectionModel

public function CellSelectionModel( Object config )
Parameters:
  • config : Object
    The object containing the configuration of this model.

Method Details

addEvents

public function addEvents( Object object )
Used to define events on this Observable
Parameters:
  • object : Object
    The object with the events defined
Returns:
  • void
This method is defined by Observable.

addListener

public function addListener( String eventName, Function handler, [Object scope], [Object options] )
Appends an event handler to this component
Parameters:
  • eventName : String
    The type of event to listen for
  • handler : Function
    The method the event invokes
  • scope : Object
    (optional) The scope in which to execute the handler function. The handler function's "this" context.
  • options : Object
    (optional) An object containing handler configuration properties. This may contain any of the following properties:
    • scope {Object} The scope in which to execute the handler function. The handler function's "this" context.
    • delay {Number} The number of milliseconds to delay the invocation of the handler after te event fires.
    • single {Boolean} True to add a handler to handle just the next firing of the event, and then remove itself.
    • buffer {Number} Causes the handler to be scheduled to run in an Ext.util.DelayedTask delayed by the specified number of milliseconds. If the event fires again within that time, the original handler is not invoked, but the new handler is scheduled in its place.

    Combining Options
    Using the options argument, it is possible to combine different types of listeners:

    A normalized, delayed, one-time listener that auto stops the event and passes a custom argument (forumId)

    el.on('click', this.onClick, this, {
     			single: true,
        		delay: 100,
        		forumId: 4
    		});

    Attaching multiple handlers in 1 call
    The method also allows for a single argument to be passed which is a config object containing properties which specify multiple handlers.

    el.on({
    			'click': {
            		fn: this.onClick,
            		scope: this,
            		delay: 100
        		}, 
        		'mouseover': {
            		fn: this.onMouseOver,
            		scope: this
        		},
        		'mouseout': {
            		fn: this.onMouseOut,
            		scope: this
        		}
    		});

    Or a shorthand syntax which passes the same scope object to all handlers:

    el.on({
    			'click': this.onClick,
        		'mouseover': this.onMouseOver,
        		'mouseout': this.onMouseOut,
        		scope: this
    		});
Returns:
  • void
This method is defined by Observable.

clearSelections

public function clearSelections( Boolean true )
Clears all selections.
Parameters:
  • true : Boolean
    to prevent the gridview from being notified about the change.
Returns:
  • void
This method is defined by CellSelectionModel.

fireEvent

public function fireEvent( String eventName, Object... args )
Fires the specified event with the passed parameters (minus the event name).
Parameters:
  • eventName : String
  • args : Object...
    Variable number of parameters are passed to handlers
Returns:
  • Boolean
    returns false if any of the handlers return false otherwise it returns true
This method is defined by Observable.

getSelectedCell

public function getSelectedCell()
Returns the currently selected cell,.
Parameters:
  • None.
Returns:
  • Object
    The selected cell or null if none selected.
This method is defined by CellSelectionModel.

hasListener

public function hasListener( String eventName )
Checks to see if this object has any listeners for a specified event
Parameters:
  • eventName : String
    The name of the event to check for
Returns:
  • Boolean
    True if the event is being listened for, else false
This method is defined by Observable.

hasSelection

public function hasSelection()
Returns true if there is a selection.
Parameters:
  • None.
Returns:
  • Boolean
This method is defined by CellSelectionModel.

isLocked

public function isLocked()
Returns true if the selections are locked.
Parameters:
  • None.
Returns:
  • Boolean
This method is defined by AbstractSelectionModel.

lock

public function lock()
Locks the selections.
Parameters:
  • None.
Returns:
  • void
This method is defined by AbstractSelectionModel.

on

public function on( String eventName, Function handler, [Object scope], [Object options] )
Appends an event handler to this element (shorthand for addListener)
Parameters:
  • eventName : String
    The type of event to listen for
  • handler : Function
    The method the event invokes
  • scope : Object
    (optional) The scope in which to execute the handler function. The handler function's "this" context.
  • options : Object
    (optional)
Returns:
  • void
This method is defined by Observable.

purgeListeners

public function purgeListeners()
Removes all listeners for this object
Parameters:
  • None.
Returns:
  • void
This method is defined by Observable.

removeListener

public function removeListener( String eventName, Function handler, [Object scope] )
Removes a listener
Parameters:
  • eventName : String
    The type of event to listen for
  • handler : Function
    The handler to remove
  • scope : Object
    (optional) The scope (this object) for the handler
Returns:
  • void
This method is defined by Observable.

select

public function select( Number rowIndex, Number collIndex )
Selects a cell.
Parameters:
  • rowIndex : Number
  • collIndex : Number
Returns:
  • void
This method is defined by CellSelectionModel.

un

public function un( String eventName, Function handler, [Object scope] )
Removes a listener (shorthand for removeListener)
Parameters:
  • eventName : String
    The type of event to listen for
  • handler : Function
    The handler to remove
  • scope : Object
    (optional) The scope (this object) for the handler
Returns:
  • void
This method is defined by Observable.

unlock

public function unlock()
Unlocks the selections.
Parameters:
  • None.
Returns:
  • void
This method is defined by AbstractSelectionModel.

Event Details

beforerowselect

public event beforerowselect
Fires before a cell is selected.
Subscribers will be called with the following parameters:
  • this : SelectionModel
  • rowIndex : Number
    The selected row index
  • colIndex : Number
    The selected cell index
This event is defined by CellSelectionModel.

cellselect

public event cellselect
Fires when a cell is selected.
Subscribers will be called with the following parameters:
  • this : SelectionModel
  • rowIndex : Number
    The selected row index
  • colIndex : Number
    The selected cell index
This event is defined by CellSelectionModel.

selectionchange

public event selectionchange
Fires when the active selection changes.
Subscribers will be called with the following parameters:
  • this : SelectionModel
  • selection : Object
    null for no selection or an object (o) with two properties
    • o.record: the record object for the row the selection is in
    • o.cell: An array of [rowIndex, columnIndex]
This event is defined by CellSelectionModel.

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