dijit/layout/_LayoutWidget (version 1.10)

dijit/_Widget, dijit/_Container, dijit/_Contained

Summary

Base class for a _Container widget which is responsible for laying out its children. Widgets which mixin this code must define layout() to manage placement and sizing of the children.

Usage

var foo = new _LayoutWidget(params,srcNodeRef);
dijit/_Widget
Parameter Type Description
params Object | null

Hash of initialization parameters for widget, including scalar values (like title, duration etc.) and functions, typically callbacks like onClick. The hash can contain any of the widget's properties, excluding read-only properties.

srcNodeRef DOMNode | String
Optional

If a srcNodeRef (DOM node) is specified:

  • use srcNodeRef.innerHTML as my contents
  • if this is a behavioral widget then apply behavior to that srcNodeRef
  • otherwise, replace srcNodeRef with my generated DOM tree

See the dijit/layout/_LayoutWidget reference documentation for more information.

Property Summary

  • _attrPairNames
  • _blankGifPath to a blank 1x1 image.
  • _focusManager
  • _setClassAttr
  • _setDirAttr
  • _setIdAttr
  • _setLangAttr
  • _setTitleAttr
  • _setTypeAttr
  • _startedstartup() has completed.
  • attributeMapDeprecated.
  • baseClassThis class name is applied to the widget's domNode and also may be used to generate names for sub nodes, for example dijitTabContainer-content.
  • class
  • containerNodeDesignates where children of the source DOM node will be placed. "Children" in this case refers to both DOM nodes and widgets.
  • dirBi-directional support, as defined by the HTML DIR attribute.
  • domNodeThis is our visible representation of the widget!
  • focusedThis widget or a widget it contains has focus, or is "active" because it was recently clicked.
  • idA unique, opaque ID string that can be assigned by users or by the system.
  • isLayoutContainerIndicates that this widget is going to call resize() on its children widgets, setting their size, when they become visible.
  • langRarely used.
  • ownerDocumentThe document this widget belongs to.
  • srcNodeRefpointer to original DOM node
  • styleHTML style attributes as cssText string or name/value hash
  • titleHTML title attribute.
  • tooltipWhen this widget's title attribute is used to for a tab label, accordion pane title, etc., this specifies the tooltip to appear when the mouse is hovered over that text.

Method Summary

  • _applyAttributes() Step during widget creation to copy widget attributes to the DOM according to attributeMap and _setXXXAttr objects, and also to call custom _setXXXAttr() methods.
  • _attrToDom(attr,value,commands) Reflect a widget attribute (title, tabIndex, duration etc.) to the widget DOM, as specified by commands parameter.
  • _changeAttrValue(name,value) Internal helper for directly changing an attribute value.
  • _get(name) Helper function to get value for specified property stored by this._set(), i.e. for properties with custom setters.
  • _getAttrNames(name) Helper function for get() and set().
  • _getSibling(which) Returns next or previous sibling
  • _getSiblingOfChild(child,dir) Get the next or previous widget sibling of child
  • _introspect() Collect metadata about this widget (only once per class, not once per instance): - list of attributes with custom setters, storing in this.constructor._setterAttrs - generate this.constructor._onMap, mapping names like "mousedown" to functions like onMouseDown
  • _set(name,value) Helper function to set new value for specified property, and call handlers registered with watch() if the value has changed.
  • _setFocusedAttr(val)
  • _setOwnerDocumentAttr(val)
  • _setStyleAttr(value) Sets the style attribute of the widget according to value, which is either a hash like {height: "5px", width: "3px"} or a plain string
  • _setupChild(child) Common setup for initial children and children which are added after startup
  • addChild(child,insertIndex)
  • attr(name,value) This method is deprecated, use get() or set() directly.
  • buildRendering()
  • connect(obj,event,method) Deprecated, will be removed in 2.0, use this.own(on(...)) or this.own(aspect.after(...)) instead.
  • create(params,srcNodeRef) Kick off the life-cycle of a widget
  • defer(fcn,delay) Wrapper to setTimeout to avoid deferred functions executing after the originating widget has been destroyed.
  • destroy(preserveDom) Destroy this widget, but not its descendants.
  • destroyDescendants(preserveDom) Recursively destroy the children of this widget and their descendants.
  • destroyRecursive(preserveDom) Destroy this widget and its descendants
  • destroyRendering(preserveDom) Destroys the DOM nodes associated with this widget.
  • disconnect(handle) Deprecated, will be removed in 2.0, use handle.remove() instead.
  • emit(type,eventObj,callbackArgs) Used by widgets to signal that a synthetic event occurred, ex: myWidget.emit("attrmodified-selectedChildWidget", {}).
  • get(name) Get a property from a widget.
  • getChildren() Returns all direct children of this widget, i.e. all widgets underneath this.containerNode whose parent is this widget.
  • getDescendants() Returns all the widgets contained by this, i.e., all widgets underneath this.containerNode.
  • getIndexInParent() Returns the index of this widget within its container parent.
  • getIndexOfChild(child) Gets the index of the child in this container or -1 if not found
  • getNextSibling() Returns null if this is the last child of the parent, otherwise returns the next element sibling to the "right".
  • getParent() Returns the parent widget of this widget.
  • getPreviousSibling() Returns null if this is the first child of the parent, otherwise returns the next element sibling to the "left".
  • hasChildren() Returns true if widget has child widgets, i.e. if this.containerNode contains widgets.
  • isFocusable() Return true if this widget can currently be focused and false if not
  • isLeftToRight() Return this widget's explicit or implicit orientation (true for LTR, false for RTL)
  • layout() Widgets override this method to size and position their contents/children.
  • on(type,func)
  • own() Track specified handles and remove/destroy them when this instance is destroyed, unless they were already removed/destroyed manually.
  • placeAt(reference,position) Place this widget somewhere in the DOM based on standard domConstruct.place() conventions.
  • postCreate()
  • postMixInProperties() Called after the parameters to the widget have been read-in, but before the widget template is instantiated.
  • postscript(params,srcNodeRef) Kicks off widget instantiation.
  • removeChild(child)
  • resize(changeSize,resultSize) Call this to resize a widget, or after its size has changed.
  • set(name,value) Set a property on a widget
  • setAttribute(attr,value) Deprecated.
  • startup() Called after all the widgets have been instantiated and their dom nodes have been inserted somewhere under .
  • subscribe(t,method) Deprecated, will be removed in 2.0, use this.own(topic.subscribe()) instead.
  • toString() Returns a string that represents the widget.
  • uninitialize() Deprecated.
  • unsubscribe(handle) Deprecated, will be removed in 2.0, use handle.remove() instead.
  • watch(name,callback) Watches a property for changes

Event Summary

  • _onBlur() This is where widgets do processing for when they stop being active, such as changing CSS classes.
  • _onFocus() This is where widgets do processing for when they are active, such as changing CSS classes.
  • _onMap(type) Maps on() type parameter (ex: "mousemove") to method name (ex: "onMouseMove").
  • _onShow() Internal method called when this widget is made visible.
  • onBlur() Called when the widget stops being "active" because focus moved to something outside of it, or the user clicked somewhere outside of it, or the widget was hidden.
  • onClick(event) Connect to this function to receive notifications of mouse click events.
  • onClose() Called when this widget is being displayed as a popup (ex: a Calendar popped up from a DateTextBox), and it is hidden.
  • onDblClick(event) Connect to this function to receive notifications of mouse double click events.
  • onFocus() Called when the widget becomes "active" because it or a widget inside of it either has focus, or has recently been clicked.
  • onHide() Called when another widget becomes the selected pane in a dijit/layout/TabContainer, dijit/layout/StackContainer, dijit/layout/AccordionContainer, etc.
  • onKeyDown(event) Connect to this function to receive notifications of keys being pressed down.
  • onKeyPress(event) Connect to this function to receive notifications of printable keys being typed.
  • onKeyUp(event) Connect to this function to receive notifications of keys being released.
  • onMouseDown(event) Connect to this function to receive notifications of when the mouse button is pressed down.
  • onMouseEnter(event) Connect to this function to receive notifications of when the mouse moves onto this widget.
  • onMouseLeave(event) Connect to this function to receive notifications of when the mouse moves off of this widget.
  • onMouseMove(event) Connect to this function to receive notifications of when the mouse moves over nodes contained within this widget.
  • onMouseOut(event) Connect to this function to receive notifications of when the mouse moves off of nodes contained within this widget.
  • onMouseOver(event) Connect to this function to receive notifications of when the mouse moves onto nodes contained within this widget.
  • onMouseUp(event) Connect to this function to receive notifications of when the mouse button is released.
  • onShow() Called when this widget becomes the selected pane in a dijit/layout/TabContainer, dijit/layout/StackContainer, dijit/layout/AccordionContainer, etc.

Properties

_attrPairNames
Defined by: dijit/_WidgetBase
_blankGif
Defined by: dijit/_WidgetBase

Path to a blank 1x1 image. Used by <img> nodes in templates that really get their image via CSS background-image.

_focusManager
Defined by: dijit/_FocusMixin
_setClassAttr
Defined by: dijit/_WidgetBase
_setDirAttr
Defined by: dijit/_WidgetBase
_setIdAttr
Defined by: dijit/_WidgetBase
_setLangAttr
Defined by: dijit/_WidgetBase
_setTitleAttr
_setTypeAttr
Defined by: dijit/_WidgetBase
_started
Defined by: dijit/_WidgetBase

startup() has completed.

attributeMap
Defined by: dijit/_WidgetBase

Deprecated. Instead of attributeMap, widget should have a _setXXXAttr attribute for each XXX attribute to be mapped to the DOM.

attributeMap sets up a "binding" between attributes (aka properties) of the widget and the widget's DOM. Changes to widget attributes listed in attributeMap will be reflected into the DOM.

For example, calling set('title', 'hello') on a TitlePane will automatically cause the TitlePane's DOM to update with the new title.

attributeMap is a hash where the key is an attribute of the widget, and the value reflects a binding to a:

  • DOM node attribute

    focus: {node: "focusNode", type: "attribute"} Maps this.focus to this.focusNode.focus

  • DOM node innerHTML

    title: { node: "titleNode", type: "innerHTML" } Maps this.title to this.titleNode.innerHTML

  • DOM node innerText

    title: { node: "titleNode", type: "innerText" } Maps this.title to this.titleNode.innerText

  • DOM node CSS class

    myClass: { node: "domNode", type: "class" } Maps this.myClass to this.domNode.className

If the value is an array, then each element in the array matches one of the formats of the above list.

There are also some shorthands for backwards compatibility:

  • string --> { node: string, type: "attribute" }, for example:
"focusNode" ---> { node: "focusNode", type: "attribute" }
  • "" --> { node: "domNode", type: "attribute" }
baseClass

This class name is applied to the widget's domNode and also may be used to generate names for sub nodes, for example dijitTabContainer-content.

class
Defined by: dijit/_WidgetBase
containerNode
Defined by: dijit/_WidgetBase

Designates where children of the source DOM node will be placed. "Children" in this case refers to both DOM nodes and widgets. For example, for myWidget:

<div data-dojo-type=myWidget>
    <b> here's a plain DOM node
    <span data-dojo-type=subWidget>and a widget</span>
    <i> and another plain DOM node </i>
</div>

containerNode would point to:

<b> here's a plain DOM node
<span data-dojo-type=subWidget>and a widget</span>
<i> and another plain DOM node </i>

In templated widgets, "containerNode" is set via a data-dojo-attach-point assignment.

containerNode must be defined for any widget that accepts innerHTML (like ContentPane or BorderContainer or even Button), and conversely is null for widgets that don't, like TextBox.

dir
Defined by: dijit/_WidgetBase

Bi-directional support, as defined by the HTML DIR attribute. Either left-to-right "ltr" or right-to-left "rtl". If undefined, widgets renders in page's default direction.

domNode
Defined by: dijit/_WidgetBase

This is our visible representation of the widget! Other DOM Nodes may by assigned to other properties, usually through the template system's data-dojo-attach-point syntax, but the domNode property is the canonical "top level" node in widget UI.

focused
Defined by: dijit/_FocusMixin

This widget or a widget it contains has focus, or is "active" because it was recently clicked.

id
Defined by: dijit/_WidgetBase

A unique, opaque ID string that can be assigned by users or by the system. If the developer passes an ID which is known not to be unique, the specified ID is ignored and the system-generated ID is used instead.

isLayoutContainer

Indicates that this widget is going to call resize() on its children widgets, setting their size, when they become visible.

lang
Defined by: dijit/_WidgetBase

Rarely used. Overrides the default Dojo locale used to render this widget, as defined by the HTML LANG attribute. Value must be among the list of locales specified during by the Dojo bootstrap, formatted according to RFC 3066 (like en-us).

ownerDocument
Defined by: dijit/_WidgetBase

The document this widget belongs to. If not specified to constructor, will default to srcNodeRef.ownerDocument, or if no sourceRef specified, then to the document global

srcNodeRef
Defined by: dijit/_WidgetBase

pointer to original DOM node

style
Defined by: dijit/_WidgetBase

HTML style attributes as cssText string or name/value hash

title
Defined by: dijit/_WidgetBase

HTML title attribute.

For form widgets this specifies a tooltip to display when hovering over the widget (just like the native HTML title attribute).

For TitlePane or for when this widget is a child of a TabContainer, AccordionContainer, etc., it's used to specify the tab label, accordion pane title, etc. In this case it's interpreted as HTML.

tooltip
Defined by: dijit/_WidgetBase

When this widget's title attribute is used to for a tab label, accordion pane title, etc., this specifies the tooltip to appear when the mouse is hovered over that text.

Methods

_applyAttributes()
Defined by dijit/_WidgetBase

Step during widget creation to copy widget attributes to the DOM according to attributeMap and _setXXXAttr objects, and also to call custom _setXXXAttr() methods.

Skips over blank/false attribute values, unless they were explicitly specified as parameters to the widget, since those are the default anyway, and setting tabIndex="" is different than not setting tabIndex at all.

For backwards-compatibility reasons attributeMap overrides _setXXXAttr when _setXXXAttr is a hash/string/array, but _setXXXAttr as a functions override attributeMap.

_attrToDom(attr,value,commands)
Defined by dijit/_WidgetBase

Reflect a widget attribute (title, tabIndex, duration etc.) to the widget DOM, as specified by commands parameter. If commands isn't specified then it's looked up from attributeMap. Note some attributes like "type" cannot be processed this way as they are not mutable.

Parameter Type Description
attr String

Name of member variable (ex: "focusNode" maps to this.focusNode) pointing to DOMNode inside the widget, or alternately pointing to a subwidget

value String
commands Object
Optional
_changeAttrValue(name,value)
Defined by dojo/Stateful

Internal helper for directly changing an attribute value.

Directly change the value of an attribute on an object, bypassing any accessor setter. Also handles the calling of watch and emitting events. It is designed to be used by descendant class when there are two values of attributes that are linked, but calling .set() is not appropriate.

Parameter Type Description
name String

The property to set.

value Mixed

The value to set in the property.

Returns:function

Internal helper for directly changing an attribute value.

_get(name)
Defined by dijit/_WidgetBase

Helper function to get value for specified property stored by this._set(), i.e. for properties with custom setters. Used mainly by custom getters.

For example, CheckBox._getValueAttr() calls this._get("value").

Parameter Type Description
name String
Returns:undefined
_getAttrNames(name)
Defined by dijit/_WidgetBase

Helper function for get() and set(). Caches attribute name values so we don't do the string ops every time.

Parameter Type Description
name undefined
Returns:undefined | object
_getSibling(which)
Defined by dijit/_Contained

Returns next or previous sibling

Parameter Type Description
which String

Either "next" or "previous"

Returns:undefined
_getSiblingOfChild(child,dir)
Defined by dijit/_Container

Get the next or previous widget sibling of child

Parameter Type Description
child dijit/_WidgetBase
dir int

if 1, get the next sibling if -1, get the previous sibling

Returns:undefined
_introspect()
Defined by dijit/_WidgetBase

Collect metadata about this widget (only once per class, not once per instance):

- list of attributes with custom setters, storing in this.constructor._setterAttrs
- generate this.constructor._onMap, mapping names like "mousedown" to functions like onMouseDown
_set(name,value)
Defined by dijit/_WidgetBase

Helper function to set new value for specified property, and call handlers registered with watch() if the value has changed.

Parameter Type Description
name String
value anything
_setFocusedAttr(val)
Defined by dijit/_Widget
Parameter Type Description
val undefined
_setOwnerDocumentAttr(val)
Defined by dijit/_WidgetBase
Parameter Type Description
val undefined
_setStyleAttr(value)
Defined by dijit/_WidgetBase

Sets the style attribute of the widget according to value, which is either a hash like {height: "5px", width: "3px"} or a plain string

Determines which node to set the style on based on style setting in attributeMap.

Parameter Type Description
value String | Object
_setupChild(child)

Common setup for initial children and children which are added after startup

Parameter Type Description
child dijit/_WidgetBase
addChild(child,insertIndex)
Parameter Type Description
child dijit/_WidgetBase
insertIndex Integer
Optional
attr(name,value)
Defined by dijit/_Widget

This method is deprecated, use get() or set() directly.

Parameter Type Description
name String | Object

The property to get or set. If an object is passed here and not a string, its keys are used as names of attributes to be set and the value of the object as values to set in the widget.

value Object
Optional

Optional. If provided, attr() operates as a setter. If omitted, the current value of the named property is returned.

Returns:undefined
buildRendering()
connect(obj,event,method)
Defined by dijit/_WidgetBase

Deprecated, will be removed in 2.0, use this.own(on(...)) or this.own(aspect.after(...)) instead.

Connects specified obj/event to specified method of this object and registers for disconnect() on widget destroy.

Provide widget-specific analog to dojo.connect, except with the implicit use of this widget as the target object. Events connected with this.connect are disconnected upon destruction.

Parameter Type Description
obj Object | null
event String | Function
method String | Function
Returns:any | undefined

A handle that can be passed to disconnect in order to disconnect before the widget is destroyed.

Examples

Example 1

var btn = new Button();
// when foo.bar() is called, call the listener we're going to
// provide in the scope of btn
btn.connect(foo, "bar", function(){
    console.debug(this.toString());
});
create(params,srcNodeRef)
Defined by dijit/_WidgetBase

Kick off the life-cycle of a widget

Create calls a number of widget methods (postMixInProperties, buildRendering, postCreate, etc.), some of which of you'll want to override. See http://dojotoolkit.org/reference-guide/dijit/_WidgetBase.html for a discussion of the widget creation lifecycle.

Of course, adventurous developers could override create entirely, but this should only be done as a last resort.

Parameter Type Description
params Object | null

Hash of initialization parameters for widget, including scalar values (like title, duration etc.) and functions, typically callbacks like onClick. The hash can contain any of the widget's properties, excluding read-only properties.

srcNodeRef DOMNode | String
Optional

If a srcNodeRef (DOM node) is specified:

  • use srcNodeRef.innerHTML as my contents
  • if this is a behavioral widget then apply behavior to that srcNodeRef
  • otherwise, replace srcNodeRef with my generated DOM tree
defer(fcn,delay)
Defined by dijit/_WidgetBase

Wrapper to setTimeout to avoid deferred functions executing after the originating widget has been destroyed. Returns an object handle with a remove method (that returns null) (replaces clearTimeout).

Parameter Type Description
fcn Function

Function reference.

delay Number
Optional

Delay, defaults to 0.

Returns:object
destroy(preserveDom)
Defined by dijit/_WidgetBase

Destroy this widget, but not its descendants. Descendants means widgets inside of this.containerNode. Will also destroy any resources (including widgets) registered via this.own().

This method will also destroy internal widgets such as those created from a template, assuming those widgets exist inside of this.domNode but outside of this.containerNode.

For 2.0 it's planned that this method will also destroy descendant widgets, so apps should not depend on the current ability to destroy a widget without destroying its descendants. Generally they should use destroyRecursive() for widgets with children.

Parameter Type Description
preserveDom Boolean

If true, this method will leave the original DOM structure alone. Note: This will not yet work with _TemplatedMixin widgets

destroyDescendants(preserveDom)
Defined by dijit/_WidgetBase

Recursively destroy the children of this widget and their descendants.

Parameter Type Description
preserveDom Boolean
Optional

If true, the preserveDom attribute is passed to all descendant widget's .destroy() method. Not for use with _Templated widgets.

destroyRecursive(preserveDom)
Defined by dijit/_WidgetBase

Destroy this widget and its descendants

This is the generic "destructor" function that all widget users should call to cleanly discard with a widget. Once a widget is destroyed, it is removed from the manager object.

Parameter Type Description
preserveDom Boolean
Optional

If true, this method will leave the original DOM structure alone of descendant Widgets. Note: This will NOT work with dijit._TemplatedMixin widgets.

destroyRendering(preserveDom)
Defined by dijit/_WidgetBase

Destroys the DOM nodes associated with this widget.

Parameter Type Description
preserveDom Boolean
Optional

If true, this method will leave the original DOM structure alone during tear-down. Note: this will not work with _Templated widgets yet.

disconnect(handle)
Defined by dijit/_WidgetBase

Deprecated, will be removed in 2.0, use handle.remove() instead.

Disconnects handle created by connect.

Parameter Type Description
handle undefined
emit(type,eventObj,callbackArgs)
Defined by dijit/_WidgetBase

Used by widgets to signal that a synthetic event occurred, ex:

myWidget.emit("attrmodified-selectedChildWidget", {}).

Emits an event on this.domNode named type.toLowerCase(), based on eventObj. Also calls onType() method, if present, and returns value from that method. By default passes eventObj to callback, but will pass callbackArgs instead, if specified. Modifies eventObj by adding missing parameters (bubbles, cancelable, widget).

Parameter Type Description
type String
eventObj Object
Optional
callbackArgs Array
Optional
Returns:undefined
get(name)
Defined by dijit/_WidgetBase

Get a property from a widget.

Get a named property from a widget. The property may potentially be retrieved via a getter method. If no getter is defined, this just retrieves the object's property.

For example, if the widget has properties foo and bar and a method named _getFooAttr(), calling: myWidget.get("foo") would be equivalent to calling widget._getFooAttr() and myWidget.get("bar") would be equivalent to the expression widget.bar2

Parameter Type Description
name undefined

The property to get.

Returns:undefined
getChildren()
Defined by dijit/_WidgetBase

Returns all direct children of this widget, i.e. all widgets underneath this.containerNode whose parent is this widget. Note that it does not return all descendants, but rather just direct children. Analogous to Node.childNodes, except containing widgets rather than DOMNodes.

The result intentionally excludes internally created widgets (a.k.a. supporting widgets) outside of this.containerNode.

Note that the array returned is a simple array. Application code should not assume existence of methods like forEach().

Returns:Array
getDescendants()
Defined by dijit/_Widget

Returns all the widgets contained by this, i.e., all widgets underneath this.containerNode. This method should generally be avoided as it returns widgets declared in templates, which are supposed to be internal/hidden, but it's left here for back-compat reasons.

Returns:Array
getIndexInParent()
Defined by dijit/_Contained

Returns the index of this widget within its container parent. It returns -1 if the parent does not exist, or if the parent is not a dijit/_Container

Returns:number | undefined
getIndexOfChild(child)
Defined by dijit/_Container

Gets the index of the child in this container or -1 if not found

Parameter Type Description
child dijit/_WidgetBase
Returns:undefined
getNextSibling()
Defined by dijit/_Contained

Returns null if this is the last child of the parent, otherwise returns the next element sibling to the "right".

Returns:undefined
getParent()
Defined by dijit/_WidgetBase

Returns the parent widget of this widget.

Returns:undefined
getPreviousSibling()
Defined by dijit/_Contained

Returns null if this is the first child of the parent, otherwise returns the next element sibling to the "left".

Returns:undefined
hasChildren()
Defined by dijit/_Container

Returns true if widget has child widgets, i.e. if this.containerNode contains widgets.

Returns:boolean
isFocusable()
Defined by dijit/_WidgetBase

Return true if this widget can currently be focused and false if not

Returns:undefined
isLeftToRight()
Defined by dijit/_WidgetBase

Return this widget's explicit or implicit orientation (true for LTR, false for RTL)

Returns:undefined
layout()

Widgets override this method to size and position their contents/children. When this is called this._contentBox is guaranteed to be set (see resize()).

This is called after startup(), and also when the widget's size has been changed.

on(type,func)
Defined by dijit/_Widget
Parameter Type Description
type String | Function

protected

func Function
Returns:undefined
own()
Defined by dijit/Destroyable

Track specified handles and remove/destroy them when this instance is destroyed, unless they were already removed/destroyed manually.

Returns:any | undefined

The array of specified handles, so you can do for example:

var handle = this.own(on(...))[0];
placeAt(reference,position)
Defined by dijit/_WidgetBase

Place this widget somewhere in the DOM based on standard domConstruct.place() conventions.

A convenience function provided in all _Widgets, providing a simple shorthand mechanism to put an existing (or newly created) Widget somewhere in the dom, and allow chaining.

Parameter Type Description
reference String | DomNode | DocumentFragment | dijit/_WidgetBase

Widget, DOMNode, DocumentFragment, or id of widget or DOMNode

position String | Int
Optional

If reference is a widget (or id of widget), and that widget has an ".addChild" method, it will be called passing this widget instance into that method, supplying the optional position index passed. In this case position (if specified) should be an integer.

If reference is a DOMNode (or id matching a DOMNode but not a widget), the position argument can be a numeric index or a string "first", "last", "before", or "after", same as dojo/dom-construct::place().

Returns:dijit/_WidgetBase | function

Provides a useful return of the newly created dijit._Widget instance so you can "chain" this function by instantiating, placing, then saving the return value to a variable.

Examples

Example 1

// create a Button with no srcNodeRef, and place it in the body:
var button = new Button({ label:"click" }).placeAt(win.body());
// now, 'button' is still the widget reference to the newly created button
button.on("click", function(e){ console.log('click'); }));

Example 2

// create a button out of a node with id="src" and append it to id="wrapper":
var button = new Button({},"src").placeAt("wrapper");

Example 3

// place a new button as the first element of some div
var button = new Button({ label:"click" }).placeAt("wrapper","first");

Example 4

// create a contentpane and add it to a TabContainer
var tc = dijit.byId("myTabs");
new ContentPane({ href:"foo.html", title:"Wow!" }).placeAt(tc)
postCreate()
Defined by dijit/_Widget
postMixInProperties()
Defined by dijit/_WidgetBase

Called after the parameters to the widget have been read-in, but before the widget template is instantiated. Especially useful to set properties that are referenced in the widget template.

postscript(params,srcNodeRef)
Defined by dijit/_WidgetBase

Kicks off widget instantiation. See create() for details.

Parameter Type Description
params Object
Optional
srcNodeRef DomNode | String
removeChild(child)
Parameter Type Description
child dijit/_WidgetBase
resize(changeSize,resultSize)

Call this to resize a widget, or after its size has changed.

Change size mode:

When changeSize is specified, changes the marginBox of this widget and forces it to re-layout its contents accordingly. changeSize may specify height, width, or both.

If resultSize is specified it indicates the size the widget will become after changeSize has been applied.

Notification mode:

When changeSize is null, indicates that the caller has already changed the size of the widget, or perhaps it changed because the browser window was resized. Tells widget to re-layout its contents accordingly.

If resultSize is also specified it indicates the size the widget has become.

In either mode, this method also:

  1. Sets this._borderBox and this._contentBox to the new size of the widget. Queries the current domNode size if necessary.
  2. Calls layout() to resize contents (and maybe adjust child widgets).
Parameter Type Description
changeSize Object
Optional

Sets the widget to this margin-box size and position. May include any/all of the following properties:

{w: int, h: int, l: int, t: int}
resultSize Object
Optional

The margin-box size of this widget after applying changeSize (if changeSize is specified). If caller knows this size and passes it in, we don't need to query the browser to get the size.

{w: int, h: int}
set(name,value)
Defined by dijit/_WidgetBase

Set a property on a widget

Sets named properties on a widget which may potentially be handled by a setter in the widget.

For example, if the widget has properties foo and bar and a method named _setFooAttr(), calling myWidget.set("foo", "Howdy!") would be equivalent to calling widget._setFooAttr("Howdy!") and myWidget.set("bar", 3) would be equivalent to the statement widget.bar = 3;

set() may also be called with a hash of name/value pairs, ex:

myWidget.set({
    foo: "Howdy",
    bar: 3
});

This is equivalent to calling set(foo, "Howdy") and set(bar, 3)

Parameter Type Description
name undefined

The property to set.

value undefined

The value to set in the property.

Returns:function | string

Set a property on a widget

setAttribute(attr,value)
Defined by dijit/_Widget

Deprecated. Use set() instead.

Parameter Type Description
attr String
value anything
startup()

Called after all the widgets have been instantiated and their dom nodes have been inserted somewhere under .

Widgets should override this method to do any initialization dependent on other widgets existing, and then call this superclass method to finish things off.

startup() in subclasses shouldn't do anything size related because the size of the widget hasn't been set yet.

subscribe(t,method)
Defined by dijit/_WidgetBase

Deprecated, will be removed in 2.0, use this.own(topic.subscribe()) instead.

Subscribes to the specified topic and calls the specified method of this object and registers for unsubscribe() on widget destroy.

Provide widget-specific analog to dojo.subscribe, except with the implicit use of this widget as the target object.

Parameter Type Description
t String

The topic

method Function

The callback

Returns:undefined

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
toString()
Defined by dijit/_WidgetBase

Returns a string that represents the widget.

When a widget is cast to a string, this method will be used to generate the output. Currently, it does not implement any sort of reversible serialization.

Returns:string
uninitialize()
Defined by dijit/_WidgetBase

Deprecated. Override destroy() instead to implement custom widget tear-down behavior.

Returns:boolean
unsubscribe(handle)
Defined by dijit/_WidgetBase

Deprecated, will be removed in 2.0, use handle.remove() instead.

Unsubscribes handle created by this.subscribe. Also removes handle from this widget's list of subscriptions

Parameter Type Description
handle Object
watch(name,callback)
Defined by dojo/Stateful

Watches a property for changes

Parameter Type Description
name String
Optional

Indicates the property to watch. This is optional (the callback may be the only parameter), and if omitted, all the properties will be watched

callback Function

The function to execute when the property changes. This will be called after the property has been changed. The callback will be called with the |this| set to the instance, the first argument as the name of the property, the second argument as the old value and the third argument as the new value.

Returns:any | object

An object handle for the watch. The unwatch method of this object can be used to discontinue watching this property:

var watchHandle = obj.watch("foo", callback);
watchHandle.unwatch(); // callback won't be called now

Events

_onBlur()
Defined by: dijit/_FocusMixin

This is where widgets do processing for when they stop being active, such as changing CSS classes. See onBlur() for more details.

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
_onFocus()
Defined by: dijit/_FocusMixin

This is where widgets do processing for when they are active, such as changing CSS classes. See onFocus() for more details.

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
_onMap(type)
Defined by: dijit/_WidgetBase

Maps on() type parameter (ex: "mousemove") to method name (ex: "onMouseMove"). If type is a synthetic event like touch.press then returns undefined.

Parameter Type Description
type String | Function
Returns:undefined

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
_onShow()
Defined by: dijit/_Widget

Internal method called when this widget is made visible. See onShow for details.

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onBlur()
Defined by: dijit/_FocusMixin

Called when the widget stops being "active" because focus moved to something outside of it, or the user clicked somewhere outside of it, or the widget was hidden.

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onClick(event)
Defined by: dijit/_Widget

Connect to this function to receive notifications of mouse click events.

Parameter Type Description
event undefined

mouse Event

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onClose()
Defined by: dijit/_Widget

Called when this widget is being displayed as a popup (ex: a Calendar popped up from a DateTextBox), and it is hidden. This is called from the dijit.popup code, and should not be called directly.

Also used as a parameter for children of dijit/layout/StackContainer or subclasses. Callback if a user tries to close the child. Child will be closed if this function returns true.

Returns:boolean

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onDblClick(event)
Defined by: dijit/_Widget

Connect to this function to receive notifications of mouse double click events.

Parameter Type Description
event undefined

mouse Event

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onFocus()
Defined by: dijit/_FocusMixin

Called when the widget becomes "active" because it or a widget inside of it either has focus, or has recently been clicked.

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onHide()
Defined by: dijit/_Widget

Called when another widget becomes the selected pane in a dijit/layout/TabContainer, dijit/layout/StackContainer, dijit/layout/AccordionContainer, etc.

Also called to indicate hide of a dijit.Dialog, dijit.TooltipDialog, or dijit.TitlePane.

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onKeyDown(event)
Defined by: dijit/_Widget

Connect to this function to receive notifications of keys being pressed down.

Parameter Type Description
event undefined

key Event

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onKeyPress(event)
Defined by: dijit/_Widget

Connect to this function to receive notifications of printable keys being typed.

Parameter Type Description
event undefined

key Event

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onKeyUp(event)
Defined by: dijit/_Widget

Connect to this function to receive notifications of keys being released.

Parameter Type Description
event undefined

key Event

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onMouseDown(event)
Defined by: dijit/_Widget

Connect to this function to receive notifications of when the mouse button is pressed down.

Parameter Type Description
event undefined

mouse Event

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onMouseEnter(event)
Defined by: dijit/_Widget

Connect to this function to receive notifications of when the mouse moves onto this widget.

Parameter Type Description
event undefined

mouse Event

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onMouseLeave(event)
Defined by: dijit/_Widget

Connect to this function to receive notifications of when the mouse moves off of this widget.

Parameter Type Description
event undefined

mouse Event

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onMouseMove(event)
Defined by: dijit/_Widget

Connect to this function to receive notifications of when the mouse moves over nodes contained within this widget.

Parameter Type Description
event undefined

mouse Event

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onMouseOut(event)
Defined by: dijit/_Widget

Connect to this function to receive notifications of when the mouse moves off of nodes contained within this widget.

Parameter Type Description
event undefined

mouse Event

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onMouseOver(event)
Defined by: dijit/_Widget

Connect to this function to receive notifications of when the mouse moves onto nodes contained within this widget.

Parameter Type Description
event undefined

mouse Event

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onMouseUp(event)
Defined by: dijit/_Widget

Connect to this function to receive notifications of when the mouse button is released.

Parameter Type Description
event undefined

mouse Event

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
onShow()
Defined by: dijit/_Widget

Called when this widget becomes the selected pane in a dijit/layout/TabContainer, dijit/layout/StackContainer, dijit/layout/AccordionContainer, etc.

Also called to indicate display of a dijit.Dialog, dijit.TooltipDialog, or dijit.TitlePane.

Examples

Example 1

var btn = new Button();
// when /my/topic is published, this button changes its label to
// be the parameter of the topic.
btn.subscribe("/my/topic", function(v){
    this.set("label", v);
});
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