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Class Ext.LayoutManager

Package:Ext
Class:LayoutManager
Extends:Observable
Subclasses:BorderLayout
Defined In:LayoutManager.js
Base class for layout managers.

Properties   -  Methods   -  Events

Public Properties

Property Defined By
  monitorWindowResize : Boolean LayoutManager
false to disable window resize monitoring

Public Methods

Method Defined By
  addEvents(Object object) : void Observable
Copies any events from the passed object onto this object if they do not already exist. The passed object must also ...
  addListener(String eventName, Function handler, [Object scope], [Object options]) : void Observable
Appends an event handler to this component
  beginUpdate() : void LayoutManager
Suspend the LayoutManager from doing auto-layouts while making multiple add or remove calls
  endUpdate(Boolean noLayout) : void LayoutManager
Restore auto-layouts and optionally disable the manager from performing a layout
  fireEvent(String eventName, Object... args) : Boolean Observable
Fires the specified event with the passed parameters (minus the event name).
  getEl() : Ext.Element LayoutManager
Returns the element this layout is bound to.
  getRegion(String target) : Ext.LayoutRegion LayoutManager
Returns the specified region.
  getViewSize() : Object LayoutManager
Returns the size of the current view, This method normalizes document.body and element embedded layouts and performs ...
  hasListener(String eventName) : Boolean Observable
Checks to see if this object is currently listening for a specified event
  isUpdating() : Boolean LayoutManager
Returns true if this layout is currently being updated
  on(String eventName, Function handler, [Object options]) : void Observable
Appends an event handler to this element (shorthand for addListener)
  purgeListeners() : void Observable
Removes all listeners for this object
  removeListener(String eventName, Function handler, [Object scope]) : void Observable
Removes a listener
  un(String eventName, Function handler, [Object scope]) : void Observable
Removes a listener (shorthand for removeListener)

Public Events

Event Defined By
  layout : (Ext.LayoutManager this) LayoutManager
Fires when a layout is performed.
  regioncollapsed : (Ext.LayoutRegion region) LayoutManager
Fires when a region is collapsed.
  regionexpanded : (Ext.LayoutRegion region) LayoutManager
Fires when a region is expanded.
  regionresized : (Ext.LayoutRegion region, Number newSize) LayoutManager
Fires when the user resizes a region.

Property Details

monitorWindowResize

public Boolean monitorWindowResize
false to disable window resize monitoring
This property is defined by LayoutManager.

Method Details

addEvents

public function addEvents(Object object)
Copies any events from the passed object onto this object if they do not already exist. The passed object must also inherit from Observable for this method to have any effect.
Parameters:
  • object : Object
    The object from which to copy events
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.
    • delegate {String} A simple selector to filter the target or look for a descendant of the target
    • stopEvent {Boolean} True to stop the event. That is stop propagation, and prevent the default action.
    • preventDefault {Boolean} True to prevent the default action
    • stopPropagation {Boolean} True to prevent event propagation
    • normalized {Boolean} False to pass a browser event to the handler function instead of an Ext.EventObject
    • 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)

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

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

    Attaching multiple handlers in 1 call
    Code: 

    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:
    Code: 

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

beginUpdate

public function beginUpdate()
Suspend the LayoutManager from doing auto-layouts while making multiple add or remove calls
Parameters:
  • None.
Returns:
  • void
This method is defined by LayoutManager.

endUpdate

public function endUpdate(Boolean noLayout)
Restore auto-layouts and optionally disable the manager from performing a layout
Parameters:
  • noLayout : Boolean
    true to disable a layout update
Returns:
  • void
This method is defined by LayoutManager.

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.

getEl

public function getEl()
Returns the element this layout is bound to.
Parameters:
  • None.
Returns:
  • Ext.Element
This method is defined by LayoutManager.

getRegion

public function getRegion(String target)
Returns the specified region.
Parameters:
  • target : String
    The region key
Returns:
  • Ext.LayoutRegion
This method is defined by LayoutManager.

getViewSize

public function getViewSize()
Returns the size of the current view, This method normalizes document.body and element embedded layouts and performs box-model adjustments.
Parameters:
  • None.
Returns:
  • Object
    The size as an object {width: (the width), height: (the height)}
This method is defined by LayoutManager.

hasListener

public function hasListener(String eventName)
Checks to see if this object is currently listening 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.

isUpdating

public function isUpdating()
Returns true if this layout is currently being updated
Parameters:
  • None.
Returns:
  • Boolean
This method is defined by LayoutManager.

on

public function on(String eventName, Function handler, [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
  • 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.

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.

Event Details

layout

public event layout
Fires when a layout is performed.
Subscribers will be called with the following parameters:
  • this : Ext.LayoutManager
This event is defined by LayoutManager.

regioncollapsed

public event regioncollapsed
Fires when a region is collapsed.
Subscribers will be called with the following parameters:
  • region : Ext.LayoutRegion
This event is defined by LayoutManager.

regionexpanded

public event regionexpanded
Fires when a region is expanded.
Subscribers will be called with the following parameters:
  • region : Ext.LayoutRegion
This event is defined by LayoutManager.

regionresized

public event regionresized
Fires when the user resizes a region.
Subscribers will be called with the following parameters:
  • region : Ext.LayoutRegion
  • newSize : Number
    The new size (width for east/west, height for north/south)
This event is defined by LayoutManager.
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