Mixins
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
+ });
+Config Options
Other Configs
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.
+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.
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'.
Optional. The height to set target to in pixels (defaults to null)
+Optional. The height to set target to in pixels (defaults to null)
+(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'); }
+ }
+ }
+});
+The maximum height for the element (defaults to 10000)
+The maximum height for the element (defaults to 10000)
+The maximum width for the element (defaults to 10000)
+The maximum width for the element (defaults to 10000)
+The minimum height for the element (defaults to 20)
+The minimum height for the element (defaults to 20)
+The minimum width for the element (defaults to 20)
+The minimum width for the element (defaults to 20)
+True to ensure that the resize handles are always +visible, false indicates resizing by cursor changes only (defaults to false)
+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)
+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)
+Properties
Methods
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 +
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 (
+thisreference) 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 : ObjectThe scope (
thisreference) in which the handler function is executed. +If omitted, defaults to the object which fired the event.
+ - delay : NumberThe number of milliseconds to delay the invocation of the handler after the event fires.
+
- single : BooleanTrue to add a handler to handle just the next firing of the event, and then remove itself.
+
- buffer : NumberCauses 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 : ObservableOnly call the handler if the event was fired on the target Observable, not +if the event was bubbled up from a child Observable.
+
- element : StringThis 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 +}); ++ +
- scope : Object
Returns
- 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
+enameparameter was an event name, this +is the handler function. - scope : Object
Optional. If the
+enameparameter was an event name, this +is the scope (thisreference) in which the handler function is executed. - opt : Object
Optional. If the
+enameparameter was an event name, this +is the addListener options.
Returns
- void +
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 (
+thisreference) in which the function is executed. Defaults to the Observable firing the event.
Returns
- void +
Removes all listeners for this object including the managed listeners
+Removes all listeners for this object including the managed listeners
+Returns
- void +
Removes all managed listeners for this object.
+Removes all managed listeners for this object.
+Returns
- void +
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 +
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.
+
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
+
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 +
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
+
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 +
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 (
+thisreference) 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 +
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 +
Removes all added captures from the Observable.
+Removes all added captures from the Observable.
+Parameters
- o : Observable
The Observable to release
+
Returns
- 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 +
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
+enameparameter was an event name, this +is the handler function. - scope : Object
Optional. If the
+enameparameter was an event name, this +is the scope (thisreference) in which the handler function is executed.
Returns
- 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 +
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 +
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 +
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 +
Events
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
+
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
+