For up to date documentation and features, visit http://docs.sencha.com/ext-js/4-0

## Sencha Documentation

# Ext.resizer.Resizer

####

    MixinsExt.util.Observable

Applies drag handles to an element or component to make it resizable. The drag handles are inserted into the element (or component's element) and positioned absolute.

Textarea and img elements will be wrapped with an additional div because these elements do not support child nodes. The original element can be accessed through the originalTarget property.

Here is the list of valid resize handles:

    Value   Description
    ------  -------------------
     'n'     north
     's'     south
     'e'     east
     'w'     west
     'nw'    northwest
     'sw'    southwest
     'se'    southeast
     'ne'    northeast
     'all'   all

Here's an example showing the creation of a typical Resizer:

        Ext.create('Ext.resizer.Resizer', {
            el: 'elToResize',
            handles: 'all',
            minWidth: 200,
            minHeight: 100,
            maxWidth: 500,
            maxHeight: 400,
            pinned: true
        });

Defined By

### Config Options

#### Other Configs

Ext.resizer.Resizer
view source
constrainTo : Mixed

Optional. An element, or a Ext.util.Region into which the resize operation must be constrained.

Optional. An element, or a Ext.util.Region into which the resize operation must be constrained.

Ext.resizer.Resizer
view source
dynamic : Boolean
Specify as true to update the target (Element or Component) dynamically during dragging. This is true by default, but...

Specify as true to update the target (Element or Component) dynamically during dragging. This is `true` by default, but the Component class passes `false` when it is configured as Ext.Component.resizable.

If specified as `false`, a proxy element is displayed during the resize operation, and the target is updated on mouseup.

Ext.resizer.Resizer
view source
handles : String
String consisting of the resize handles to display. Defaults to 's e se' for Elements and fixed position Components. ...

String consisting of the resize handles to display. Defaults to 's e se' for Elements and fixed position Components. Defaults to 8 point resizing for floating Components (such as Windows). Specify either `'all'` or any of `'n s e w ne nw se sw'`.

Ext.resizer.Resizer
view source
height : Number

Optional. The height to set target to in pixels (defaults to null)

Optional. The height to set target to in pixels (defaults to null)

Ext.util.Observable
view source
listeners : Object
(optional) A config object containing one or more event handlers to be added to this object during initialization. T...

(optional)

A config object containing one or more event handlers to be added to this object during initialization. This should be a valid listeners config object as specified in the addListener example for attaching multiple handlers at once.

DOM events from ExtJs Components

While some ExtJs Component classes export selected DOM events (e.g. "click", "mouseover" etc), this

is usually only done when extra value can be added. For example the DataView's `click` event passing the node clicked on. To access DOM events directly from a child element of a Component, we need to specify the `element` option to identify the Component property to add a DOM listener to:

    new Ext.panel.Panel({
        width: 400,
        height: 200,
        dockedItems: [{
            xtype: 'toolbar'
        }],
        listeners: {
            click: {
                element: 'el', //bind to the underlying el property on the panel
                fn: function(){ console.log('click el'); }
            },
            dblclick: {
                element: 'body', //bind to the underlying body property on the panel
                fn: function(){ console.log('dblclick body'); }
            }
        }
    });

Ext.resizer.Resizer
view source
maxHeight : Number

The maximum height for the element (defaults to 10000)

The maximum height for the element (defaults to 10000)

Ext.resizer.Resizer
view source
maxWidth : Number

The maximum width for the element (defaults to 10000)

The maximum width for the element (defaults to 10000)

Ext.resizer.Resizer
view source
minHeight : Number

The minimum height for the element (defaults to 20)

The minimum height for the element (defaults to 20)

Ext.resizer.Resizer
view source
minWidth : Number

The minimum width for the element (defaults to 20)

The minimum width for the element (defaults to 20)

Ext.resizer.Resizer
view source
pinned : Boolean
True to ensure that the resize handles are always visible, false indicates resizing by cursor changes only (defaults ...

True to ensure that the resize handles are always visible, false indicates resizing by cursor changes only (defaults to false)

Ext.resizer.Resizer
view source
preserveRatio : Boolean

True to preserve the original ratio between height and width during resize (defaults to false)

True to preserve the original ratio between height and width during resize (defaults to false)

Ext.resizer.Resizer
view source
target : Mixed

The Element or Component to resize.

The Element or Component to resize.

Ext.resizer.Resizer
view source
transparent : Boolean

True for transparent handles. This is only applied at config time. (defaults to false)

True for transparent handles. This is only applied at config time. (defaults to false)

Ext.resizer.Resizer
view source
width : Number

Optional. The width to set the target to in pixels (defaults to null)

Optional. The width to set the target to in pixels (defaults to null)

Defined By

### Properties

Ext.resizer.Resizer
view source
el : Ext.core.Element

Outer element for resizing behavior.

Outer element for resizing behavior.

Ext.resizer.Resizer
view source
originalTarget : Mixed
Reference to the original resize target if the element of the original resize target was an IMG or a TEXTAREA which m...

Reference to the original resize target if the element of the original resize target was an IMG or a TEXTAREA which must be wrapped in a DIV.

Ext.resizer.Resizer
view source
resizeTracker : Ext.resizer.ResizeTracker

Defined By

### Methods

Ext.util.Observable
view source
addEvents( Object/String o, String ) : void

Adds the specified events to the list of events which this Observable may fire.

Adds the specified events to the list of events which this Observable may fire.

### Parameters

- o : Object/String

  Either an object with event names as properties with a value of `true` or the first event name string if multiple event names are being passed as separate parameters.

- : String

  [additional] Optional additional event names if multiple event names are being passed as separate parameters. Usage:

      this.addEvents('storeloaded', 'storecleared');

### Returns

- void

Ext.util.Observable
view source
addListener( String eventName, Function handler, [Object scope], [Object options]) : void

Appends an event handler to this object.

Appends an event handler to this object.

### Parameters

- eventName : String

  The name of the event to listen for. May also be an object who's property names are event names. See

- handler : Function

  The method the event invokes.

- scope : Object

  (optional) The scope (`this` reference) in which the handler function is executed. If omitted, defaults to the object which fired the event.

- options : Object

  (optional) An object containing handler configuration. properties. This may contain any of the following properties:

  - scope : Object
    The scope (`this` reference) in which the handler function is executed. If omitted, defaults to the object which fired the event.
  - delay : Number
    The number of milliseconds to delay the invocation of the handler after the 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.
  - target : Observable
    Only call the handler if the event was fired on the target Observable, not if the event was bubbled up from a child Observable.
  - element : String
    This option is only valid for listeners bound to Components. The name of a Component property which references an element to add a listener to.

    This option is useful during Component construction to add DOM event listeners to elements of Components which will exist only after the Component is rendered. For example, to add a click listener to a Panel's body:

        new Ext.panel.Panel({
            title: 'The title',
            listeners: {
                click: this.handlePanelClick,
                element: 'body'
            }
        });

    When added in this way, the options available are the options applicable to Ext.core.Element.addListener

  Combining Options
  Using the options argument, it is possible to combine different types of listeners:
  A delayed, one-time listener.

      myPanel.on('hide', this.handleClick, this, {
      single: true,
      delay: 100
      });

  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 events. For example:

      myGridPanel.on({
          cellClick: this.onCellClick,
          mouseover: this.onMouseOver,
          mouseout: this.onMouseOut,
          scope: this // Important. Ensure "this" is correct during handler execution
      });

  .

### Returns

- void

Ext.util.Observable
view source
addManagedListener( Observable/Element item, Object/String ename, Function fn, Object scope, Object opt) : void

Adds listeners to any Observable object (or Element) which are automatically removed when this Component is destroyed.

Adds listeners to any Observable object (or Element) which are automatically removed when this Component is destroyed.

### Parameters

- item : Observable/Element

  The item to which to add a listener/listeners.

- ename : Object/String

  The event name, or an object containing event name properties.

- fn : Function

  Optional. If the `ename` parameter was an event name, this is the handler function.

- scope : Object

  Optional. If the `ename` parameter was an event name, this is the scope (`this` reference) in which the handler function is executed.

- opt : Object

  Optional. If the `ename` parameter was an event name, this is the addListener options.

### Returns

- void

Ext.util.Observable
view source
capture( Observable o, Function fn, [Object scope]) : void
Starts capture on the specified Observable. All events will be passed to the supplied function with the event name + ...

Starts capture on the specified Observable. All events will be passed to the supplied function with the event name + standard signature of the event before the event is fired. If the supplied function returns false, the event will not fire.

### Parameters

- o : Observable

  The Observable to capture events from.

- fn : Function

  The function to call when an event is fired.

- scope : Object

  (optional) The scope (`this` reference) in which the function is executed. Defaults to the Observable firing the event.

### Returns

- void

Ext.util.Observable
view source
clearListeners : void

Removes all listeners for this object including the managed listeners

Removes all listeners for this object including the managed listeners

### Returns

- void

Ext.util.Observable
view source
clearManagedListeners : void

Removes all managed listeners for this object.

Removes all managed listeners for this object.

### Returns

- void

Ext.util.Observable
view source
enableBubble( String/Array events) : void
Enables events fired by this Observable to bubble up an owner hierarchy by calling this.getBubbleTarget() if present....

Enables events fired by this Observable to bubble up an owner hierarchy by calling `this.getBubbleTarget()` if present. There is no implementation in the Observable base class.

This is commonly used by Ext.Components to bubble events to owner Containers. See Ext.Component.getBubbleTarget. The default implementation in Ext.Component returns the Component's immediate owner. But if a known target is required, this can be overridden to access the required target more quickly.

Example:

    Ext.override(Ext.form.field.Base, {
    //  Add functionality to Field's initComponent to enable the change event to bubble
    initComponent : Ext.Function.createSequence(Ext.form.field.Base.prototype.initComponent, function() {
        this.enableBubble('change');
    }),

    //  We know that we want Field's events to bubble directly to the FormPanel.
    getBubbleTarget : function() {
        if (!this.formPanel) {
            this.formPanel = this.findParentByType('form');
        }
        return this.formPanel;
    }
    });

    var myForm = new Ext.formPanel({
    title: 'User Details',
    items: [{
        ...
    }],
    listeners: {
        change: function() {
            // Title goes red if form has been modified.
            myForm.header.setStyle('color', 'red');
        }
    }
    });

### Parameters

- events : String/Array

  The event name to bubble, or an Array of event names.

### Returns

- void

Ext.util.Observable
view source
fireEvent( String eventName, Object... args) : Boolean
Fires the specified event with the passed parameters (minus the event name). An event may be set to bubble up an Ob...

Fires the specified event with the passed parameters (minus the event name).

An event may be set to bubble up an Observable parent hierarchy (See Ext.Component.getBubbleTarget) by calling enableBubble.

### Parameters

- eventName : String

  The name of the event to fire.

- 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.

Ext.resizer.Resizer
view source
getEl : Element
Returns the element that was configured with the el or target config property. If a component was configured with the...

Returns the element that was configured with the el or target config property. If a component was configured with the target property then this will return the element of this component.

Textarea and img elements will be wrapped with an additional div because these elements do not support child nodes. The original element can be accessed through the originalTarget property.

### Returns

- Element

  element

Ext.resizer.Resizer
view source
getTarget : Element/Component
Returns the element or component that was configured with the target config property. Textarea and img elements will ...

Returns the element or component that was configured with the target config property.

Textarea and img elements will be wrapped with an additional div because these elements do not support child nodes. The original element can be accessed through the originalTarget property.

### Returns

- Element/Component

Ext.util.Observable
view source
hasListener( String eventName) : Boolean

Checks to see if this object has any listeners for a specified event

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

Ext.util.Observable
view source
observe( Function c, Object listeners) : void
Sets observability on the passed class constructor. This makes any event fired on any instance of the passed class a...

Sets observability on the passed class constructor.

This makes any event fired on any instance of the passed class also fire a single event through the class allowing for central handling of events on many instances at once.

Usage:

    Ext.util.Observable.observe(Ext.data.Connection);
    Ext.data.Connection.on('beforerequest', function(con, options) {
        console.log('Ajax request made to ' + options.url);
    });

### Parameters

- c : Function

  The class constructor to make observable.

- listeners : Object

  An object containing a series of listeners to add. See addListener.

### Returns

- void

Ext.util.Observable
view source
on( String eventName, Function handler, [Object scope], [Object options]) : void

Appends an event handler to this object (shorthand for addListener.)

Appends an event handler to this object (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 (`this` reference) in which the handler function is executed. If omitted, defaults to the object which fired the event.

- options : Object

  (optional) An object containing handler configuration.

### Returns

- void

Ext.util.Observable
view source
relayEvents( Object origin, Array events, Object prefix) : void

Relays selected events from the specified Observable as if the events were fired by `this`.

Relays selected events from the specified Observable as if the events were fired by `this`.

### Parameters

- origin : Object

  The Observable whose events this object is to relay.

- events : Array

  Array of event names to relay.

- prefix : Object

### Returns

- void

Ext.util.Observable
view source
releaseCapture( Observable o) : void

Removes all added captures from the Observable.

Removes all added captures from the Observable.

### Parameters

- o : Observable

  The Observable to release

### Returns

- void

Ext.util.Observable
view source
removeListener( String eventName, Function handler, [Object scope]) : void

Removes an event handler.

Removes an event handler.

### Parameters

- eventName : String

  The type of event the handler was associated with.

- handler : Function

  The handler to remove. This must be a reference to the function passed into the addListener call.

- scope : Object

  (optional) The scope originally specified for the handler.

### Returns

- void

Ext.util.Observable
view source
removeManagedListener( Observable|Element item, Object|String ename, Function fn, Object scope) : void

Removes listeners that were added by the mon method.

Removes listeners that were added by the mon method.

### Parameters

- item : Observable|Element

  The item from which to remove a listener/listeners.

- ename : Object|String

  The event name, or an object containing event name properties.

- fn : Function

  Optional. If the `ename` parameter was an event name, this is the handler function.

- scope : Object

  Optional. If the `ename` parameter was an event name, this is the scope (`this` reference) in which the handler function is executed.

### Returns

- void

Ext.resizer.Resizer
view source
resizeTo( Number width, Number height) : void

Perform a manual resize and fires the 'resize' event.

Perform a manual resize and fires the 'resize' event.

### Parameters

- width : Number
- height : Number

### Returns

- void

Ext.util.Observable
view source
resumeEvents : void
Resume firing events. (see suspendEvents) If events were suspended using the queueSuspended parameter, then all event...

Resume firing events. (see suspendEvents) If events were suspended using the `queueSuspended` parameter, then all events fired during event suspension will be sent to any listeners now.

### Returns

- void

Ext.util.Observable
view source
suspendEvents( Boolean queueSuspended) : void

Suspend the firing of all events. (see resumeEvents)

Suspend the firing of all events. (see resumeEvents)

### Parameters

- queueSuspended : Boolean

  Pass as true to queue up suspended events to be fired after the resumeEvents call instead of discarding all suspended events;

### Returns

- void

Ext.util.Observable
view source
un( String eventName, Function handler, [Object scope]) : void

Removes an event handler (shorthand for removeListener.)

Removes an event handler (shorthand for removeListener.)

### Parameters

- eventName : String

  The type of event the handler was associated with.

- handler : Function

  The handler to remove. This must be a reference to the function passed into the addListener call.

- scope : Object

  (optional) The scope originally specified for the handler.

### Returns

- void

Defined By

### Events

Ext.resizer.Resizer
view source
beforeresize( Ext.resizer.Resizer this, Number width, Number height, Ext.EventObject e)

Fired before resize is allowed. Return false to cancel resize.

Fired before resize is allowed. Return false to cancel resize.

### Parameters

- this : Ext.resizer.Resizer
- width : Number

  The start width

- height : Number

  The start height

- e : Ext.EventObject

  The mousedown event

Ext.resizer.Resizer
view source
resize( Ext.resizer.Resizer this, Number width, Number height, Ext.EventObject e)

Fired after a resize.

Fired after a resize.

### Parameters

- this : Ext.resizer.Resizer
- width : Number

  The new width

- height : Number

  The new height

- e : Ext.EventObject

  The mouseup event

Ext.resizer.Resizer
view source
resizedrag( Ext.resizer.Resizer this, Number width, Number height, Ext.EventObject e)

Fires during resizing. Return false to cancel resize.

Fires during resizing. Return false to cancel resize.

### Parameters

- this : Ext.resizer.Resizer
- width : Number

  The new width

- height : Number

  The new height

- e : Ext.EventObject

  The mousedown event