Properties Methods Events Config Options Direct Link

    Observable
      Resizable

# Class Ext.Resizable

Package: | Ext
Defined In: | Resizable.js
Class: | Resizable
Extends: | Observable

Applies drag handles to an element to make it resizable. The drag handles are inserted into the element and positioned absolute. Some elements, such as a textarea or image, don't support this. To overcome that, you can wrap the textarea in a div and set "resizeChild" to true (or to the id of the element), or set wrap:true in your config and the element will be wrapped for you automatically.

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 Resizable:

    var resizer = new Ext.Resizable("element-id", {
        handles: 'all',
        minWidth: 200,
        minHeight: 100,
        maxWidth: 500,
        maxHeight: 400,
        pinned: true
    });
    resizer.on("resize", myHandler);

To hide a particular handle, set its display to none in CSS, or through script:
resizer.east.setDisplayed(false);

## Config Options

Config Options | Defined By
--- | ---
| adjustments : Array/String String "auto" or an array [width, height] with values to be added to the resize operation's new size (defaults to [0,... String "auto" or an array [width, height] with values to be added to the resize operation's new size (defaults to [0, 0]) | Resizable
| animate : Boolean True to animate the resize (not compatible with dynamic sizing, defaults to false) | Resizable
| constrainTo : Mixed Constrain the resize to a particular element | Resizable
| disableTrackOver : Boolean True to disable mouse tracking. This is only applied at config time. (defaults to false) | Resizable
| draggable : Boolean Convenience to initialize drag drop (defaults to false) | Resizable
| duration : Number Animation duration if animate = true (defaults to .35) | Resizable
| dynamic : Boolean True to resize the element while dragging instead of using a proxy (defaults to false) | Resizable
| easing : String Animation easing if animate = true (defaults to 'easingOutStrong') | Resizable
| enabled : Boolean False to disable resizing (defaults to true) | Resizable
| handles : String String consisting of the resize handles to display (defaults to undefined) | Resizable
| height : Number The height of the element in pixels (defaults to null) | Resizable
| heightIncrement : Number The increment to snap the height resize in pixels (dynamic must be true, defaults to 0) | Resizable
| listeners : Object A config object containing one or more event handlers to be added to this object during initialization. This should b... 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. | Observable
| maxHeight : Number The maximum height for the element (defaults to 10000) | Resizable
| maxWidth : Number The maximum width for the element (defaults to 10000) | Resizable
| minHeight : Number The minimum height for the element (defaults to 5) | Resizable
| minWidth : Number The minimum width for the element (defaults to 5) | Resizable
| minX : Number The minimum allowed page X for the element (only used for west resizing, defaults to 0) | Resizable
| minY : Number The minimum allowed page Y for the element (only used for north resizing, defaults to 0) | Resizable
| multiDirectional : Boolean Deprecated. The old style of adding multi-direction resize handles, deprecated in favor of the handles config option ... Deprecated. The old style of adding multi-direction resize handles, deprecated in favor of the handles config option (defaults to false) | Resizable
| pinned : Boolean True to ensure that the resize handles are always visible, false to display them only when the user mouses over the r... True to ensure that the resize handles are always visible, false to display them only when the user mouses over the resizable borders. This is only applied at config time. (defaults to false) | Resizable
| preserveRatio : Boolean True to preserve the original ratio between height and width during resize (defaults to false) | Resizable
| resizeChild : Boolean/String/Element True to resize the first child, or id/element to resize (defaults to false) | Resizable
| resizeRegion : Ext.lib.Region Constrain the resize to a particular region | Resizable
| transparent : Boolean True for transparent handles. This is only applied at config time. (defaults to false) | Resizable
| width : Number The width of the element in pixels (defaults to null) | Resizable
| widthIncrement : Number The increment to snap the width resize in pixels (dynamic must be true, defaults to 0) | Resizable
| wrap : Boolean True to wrap an element with a div if needed (required for textareas and images, defaults to false) | Resizable

## Public Properties

Property | Defined By
--- | ---
| proxy : Ext.Element. The proxy Element that is resized in place of the real Element during the resize operation. This may be queried using... The proxy Element that is resized in place of the real Element during the resize operation. This may be queried using Ext.Element.getBox to provide the new area to resize to. Read only. | Resizable

## Public Methods

Method | Defined By
--- | ---
| Resizable( `Mixed el`, `Object config` ) Create a new resizable component Create a new resizable component Parameters: `el` : Mixed The id or element to resize `config` : Object configuration options Returns: `` | Resizable
| addEvents( `Object object` ) : void Used to define events on this Observable Used to define events on this Observable Parameters: `object` : Object The object with the events defined Returns: `void` | Observable
- | addListener( `String eventName`, `Function handler`, [`Object scope`], [`Object options`] ) : void Appends an event handler to this component 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 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. 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.
      foo.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:
      foo.on({
          'click' : this.onClick,
          'mouseover' : this.onMouseOver,
          'mouseout' : this.onMouseOut,
           scope: this
      });
Returns: `void` | Observable
| destroy( [`Boolean removeEl`] ) : void Destroys this resizable. If the element was wrapped and removeEl is not true then the element remains. Destroys this resizable. If the element was wrapped and removeEl is not true then the element remains. Parameters: `removeEl` : Boolean (optional) true to remove the element from the DOM Returns: `void` | Resizable
| fireEvent( `String eventName`, `Object... args` ) : Boolean Fires the specified event with the passed parameters (minus the event name). 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 | Observable
| getEl() : Ext.Element Returns the element this component is bound to. Returns the element this component is bound to. Parameters: None. Returns: `Ext.Element` | Resizable
| getResizeChild() : Ext.Element Returns the resizeChild element (or null). Returns the resizeChild element (or null). Parameters: None. Returns: `Ext.Element` | Resizable
| 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 | Observable
| on( `String eventName`, `Function handler`, [`Object scope`], [`Object options`] ) : void Appends an event handler to this element (shorthand for addListener) 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` | Observable
| purgeListeners() : void Removes all listeners for this object Removes all listeners for this object Parameters: None. Returns: `void` | Observable
| relayEvents( `Object o`, `Array events` ) : 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: `o` : Object The Observable whose events this object is to relay. `events` : Array Array of event names to relay. Returns: `void` | Observable
| removeListener( `String eventName`, `Function handler`, [`Object scope`] ) : void Removes a listener 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` | Observable
| resizeElement() : void Performs resizing of the associated Element. This method is called internally by this class, and should not be called... Performs resizing of the associated Element. This method is called internally by this class, and should not be called by user code. If a Resizable is being used to resize an Element which encapsulates a more complex UI component such as a Panel, this method may be overridden by specifying an implementation as a config option to provide appropriate behaviour at the end of the resize operation on mouseup, for example resizing the Panel, and relaying the Panel's content. The new area to be resized to is available by examining the state of the proxy Element. Example:
    new Ext.Panel({
        title: 'Resize me',
        x: 100,
        y: 100,
        renderTo: Ext.getBody(),
        floating: true,
        frame: true,
        width: 400,
        height: 200,
        listeners: {
            render: function(p) {
                new Ext.Resizable(p.getEl(), {
                    handles: 'all',
                    pinned: true,
                    transparent: true,
                    resizeElement: function() {
                        var box = this.proxy.getBox();
                        p.updateBox(box);
                        if (p.layout) {
                            p.doLayout();
                        }
                        return box;
                    }
               });
           }
        }
    }).show();
Parameters: None. Returns: `void` | Resizable
| resizeTo( `Number width`, `Number height` ) : void Perform a manual resize Perform a manual resize Parameters: `width` : Number `height` : Number Returns: `void` | Resizable
| resumeEvents() : void Resume firing events. (see suspendEvents) Resume firing events. (see suspendEvents) Parameters: None. Returns: `void` | Observable
| suspendEvents() : void Suspend the firing of all events. (see resumeEvents) Suspend the firing of all events. (see resumeEvents) Parameters: None. Returns: `void` | Observable
| un( `String eventName`, `Function handler`, [`Object scope`] ) : void Removes a listener (shorthand for removeListener) 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` | Observable

## Public Events

Event | Defined By
--- | ---
| beforeresize : ( `Ext.Resizable this`, `Ext.EventObject e` ) Fired before resize is allowed. Set enabled to false to cancel resize. Fired before resize is allowed. Set enabled to false to cancel resize. Listeners will be called with the following arguments: `this` : Ext.Resizable `e` : Ext.EventObject The mousedown event | Resizable
| resize : ( `Ext.Resizable this`, `Number width`, `Number height`, `Ext.EventObject e` ) Fired after a resize. Fired after a resize. Listeners will be called with the following arguments: `this` : Ext.Resizable `width` : Number The new width `height` : Number The new height `e` : Ext.EventObject The mouseup event | Resizable