View class responsible for rendering the <thead>
section of a table. Used as
the default headerView
for Y.DataTable.Base
and Y.DataTable
classes.
Translates the provided array of column configuration objects into a rendered
<thead>
based on the data in those objects.
The structure of the column data is expected to be a single array of objects,
where each object corresponds to a <th>
. Those objects may contain a
children
property containing a similarly structured array to indicate the
nested cells should be grouped under the parent column's colspan in a separate
row of header cells. E.g.
new Y.DataTable.HeaderView({
container: tableNode,
columns: [
{ key: 'id' }, // no nesting
{ key: 'name', children: [
{ key: 'firstName', label: 'First' },
{ key: 'lastName', label: 'Last' } ] }
]
}).render();
This would translate to the following visualization:
| | name | | |---------------
Supported properties of the column objects include:
label
- The HTML content of the header cell.key
- If label
is not specified, the key
is used for content.children
- Array of columns to appear below this column in the next row.
headerTemplate
- Overrides the instance's CELL_TEMPLATE
for cells in this
column only.abbr
- The content of the 'abbr' attribute of the <th>
title
- The content of the 'title' attribute of the <th>
className
- Adds this string of CSS classes to the column headerThrough the life of instantiation and rendering, the column objects will have the following properties added to them:
id
- (Defaulted by DataTable) The id to assign the rendered column_colspan
- To supply the <th>
attribute_rowspan
- To supply the <th>
attribute_parent
- (Added by DataTable) If the column is a child of another
column, this points to its parent columnThe column object is also used to provide values for {placeholder} tokens in the
instance's CELL_TEMPLATE
, so you can modify the template and include other
column object properties to populate them.
_addAttrs
cfgs
values
lazy
Implementation behind the public addAttrs method.
This method is invoked directly by get if it encounters a scenario in which an attribute's valueFn attempts to obtain the value an attribute in the same group of attributes, which has not yet been added (on demand initialization).
cfgs
Object
An object with attribute name/configuration pairs.
values
Object
An object with attribute name/value pairs, defining the initial values to apply. Values defined in the cfgs argument will be over-written by values in this argument unless defined as read only.
lazy
Boolean
Whether or not to delay the intialization of these attributes until the first call to get/set. Individual attributes can over-ride this behavior by defining a lazyAdd configuration property in their configuration. See addAttr.
_addLazyAttr
name
[lazyCfg]
Finishes initializing an attribute which has been lazily added.
_addOutOfOrder
name
cfg
Utility method used by get/set to add attributes encountered out of order when calling addAttrs().
For example, if:
this.addAttrs({
foo: {
setter: function() {
// make sure this bar is available when foo is added
this.get("bar");
}
},
bar: {
value: ...
}
});
_afterColumnsChange
e
Handles changes in the source's columns attribute. Redraws the headers.
e
EventFacade
The columnsChange
event object
_afterContainerChange
Handles containerChange
events. Detaches event handlers from the old
container (if any) and attaches them to the new container.
Right now the container
attr is initOnly so this event should only ever
fire the first time the container is created, but in the future (once Y.App
can handle it) we may allow runtime container changes.
_aggregateAttrs
allAttrs
A helper method, used by _initHierarchyData to aggregate attribute configuration across the instances class hierarchy.
The method will protect the attribute configuration value to protect the statically defined default value in ATTRS if required (if the value is an object literal, array or the attribute configuration has cloneDefaultValue set to shallow or deep).
allAttrs
Array
An array of ATTRS definitions across classes in the hierarchy (subclass first, Base last)
The aggregate set of ATTRS definitions for the instance
_attrCfgHash
Utility method to define the attribute hash used to filter/whitelist property mixes for this class for iteration performance reasons.
_baseDestroy
Internal destroy implementation for BaseCore
_baseInit
Internal initialization implementation for BaseCore
_cloneDefaultValue
cfg
This method assumes that the value has already been checked to be an object. Since it's on a critical path, we don't want to re-do the check.
cfg
Object
_createTHeadNode
Creates the <thead>
node that will store the header rows and cells.
_defAttrChangeFn
e
eventFastPath
Default function for attribute change events.
e
EventFacade
The event object for attribute change events.
eventFastPath
Boolean
Whether or not we're using this as a fast path in the case of no listeners or not
_defInitFn
e
Default init event handler
e
EventFacade
Event object, with a cfg property which refers to the configuration object passed to the constructor.
_destroyContainer
Removes the container
from the DOM and purges all its event listeners.
_destroyHierarchy
Destroys the class hierarchy for this instance by invoking the destructor method on the prototype of each class in the hierarchy.
_filterAdHocAttrs
allAttrs
userVals
allAttrs
Object
The set of all attribute configurations for this instance. Attributes will be removed from this set, if they belong to the filtered class, so that by the time all classes are processed, allCfgs will be empty.
userVals
Object
The config object passed in by the user, from which adhoc attrs are to be filtered.
The set of adhoc attributes passed in, in the form of an object with attribute name/configuration pairs.
_fireAttrChange
attrName
subAttrName
currVal
newVal
opts
[cfg]
Utility method to help setup the event payload and fire the attribute change event.
attrName
String
The name of the attribute
subAttrName
String
The full path of the property being changed, if this is a sub-attribute value being change. Otherwise null.
currVal
Any
The current value of the attribute
newVal
Any
The new value of the attribute
opts
Object
Any additional event data to mix into the attribute change event's event facade.
[cfg]
Object
optional
The attribute config stored in State, if already available.
_getAttr
name
Provides the common implementation for the public get method, allowing Attribute hosts to over-ride either method.
See get for argument details.
name
String
The name of the attribute.
The value of the attribute.
_getAttrCfg
name
Returns an object with the configuration properties (and value) for the given attribute. If attrName is not provided, returns the configuration properties for all attributes.
name
String
Optional. The attribute name. If not provided, the method will return the configuration for all attributes.
The configuration properties for the given attribute, or all attributes.
_getAttrCfgs
Returns an aggregated set of attribute configurations, by traversing the class hierarchy.
The hash of attribute configurations, aggregated across classes in the hierarchy This value is cached the first time the method, or _getClasses, is invoked. Subsequent invocations return the cached value.
_getAttrInitVal
attr
cfg
initValues
Returns the initial value of the given attribute from either the default configuration provided, or the over-ridden value if it exists in the set of initValues provided and the attribute is not read-only.
The initial value of the attribute.
_getAttrs
attrs
Implementation behind the public getAttrs method, to get multiple attribute values.
An object with attribute name/value pairs.
_getClasses
Returns the class hierarchy for this object, with BaseCore being the last class in the array.
An array of classes (constructor functions), making up the class hierarchy for this object. This value is cached the first time the method, or _getAttrCfgs, is invoked. Subsequent invocations return the cached value.
_getContainer
value
Getter for the container
attribute.
value
Node | Null
Current attribute value.
Container node.
_getFullType
type
Returns the fully qualified type, given a short type string. That is, returns "foo:bar" when given "bar" if "foo" is the configured prefix.
NOTE: This method, unlike _getType, does no checking of the value passed in, and is designed to be used with the low level _publish() method, for critical path implementations which need to fast-track publish for performance reasons.
type
String
The short type to prefix
The prefixed type, if a prefix is set, otherwise the type passed in
_getInstanceAttrCfgs
allCfgs
A helper method used to isolate the attrs config for this instance to pass to addAttrs
,
from the static cached ATTRS for the class.
allCfgs
Object
The set of all attribute configurations for this instance. Attributes will be removed from this set, if they belong to the filtered class, so that by the time all classes are processed, allCfgs will be empty.
The set of attributes to be added for this instance, suitable
for passing through to addAttrs
.
_getStateVal
name
[cfg]
Gets the stored value for the attribute, from either the internal state object, or the state proxy if it exits
The stored value of the attribute
_getType
If the instance has a prefix attribute and the event type is not prefixed, the instance prefix is applied to the supplied type.
_hasPotentialSubscribers
fullType
fullType
String
The fully prefixed type name
Whether the event has potential subscribers or not
_initAttrHost
attrs
values
lazy
Constructor logic for attributes. Initializes the host state, and sets up the inital attributes passed to the constructor.
attrs
Object
The attributes to add during construction (passed through to addAttrs). These can also be defined on the constructor being augmented with Attribute by defining the ATTRS property on the constructor.
values
Object
The initial attribute values to apply (passed through to addAttrs). These are not merged/cloned. The caller is responsible for isolating user provided values if required.
lazy
Boolean
Whether or not to add attributes lazily (passed through to addAttrs).
_initAttribute
Initializes AttributeCore
_initAttrs
attrs
values
lazy
Utility method to set up initial attributes defined during construction, either through the constructor.ATTRS property, or explicitly passed in.
attrs
Object
The attributes to add during construction (passed through to addAttrs). These can also be defined on the constructor being augmented with Attribute by defining the ATTRS property on the constructor.
values
Object
The initial attribute values to apply (passed through to addAttrs). These are not merged/cloned. The caller is responsible for isolating user provided values if required.
lazy
Boolean
Whether or not to add attributes lazily (passed through to addAttrs).
_initBase
config
Internal construction logic for BaseCore.
config
Object
The constructor configuration object
_initHierarchy
userVals
Initializes the class hierarchy for the instance, which includes initializing attributes for each class defined in the class's static ATTRS property and invoking the initializer method on the prototype of each class in the hierarchy.
userVals
Object
Object with configuration property name/value pairs
_initHierarchyData
A helper method used by _getClasses and _getAttrCfgs, which determines both the array of classes and aggregate set of attribute configurations across the class hierarchy for the instance.
_isLazyAttr
name
Checks whether or not the attribute is one which has been added lazily and still requires initialization.
name
String
The name of the attribute
true if it's a lazily added attribute, false otherwise.
_monitor
what
eventType
o
This is the entry point for the event monitoring system. You can monitor 'attach', 'detach', 'fire', and 'publish'. When configured, these events generate an event. click -> click_attach, click_detach, click_publish -- these can be subscribed to like other events to monitor the event system. Inividual published events can have monitoring turned on or off (publish can't be turned off before it it published) by setting the events 'monitor' config.
what
String
'attach', 'detach', 'fire', or 'publish'
eventType
String | CustomEvent
The prefixed name of the event being monitored, or the CustomEvent object.
o
Object
Information about the event interaction, such as fire() args, subscription category, publish config
_normAttrVals
valueHash
Utility method to normalize attribute values. The base implementation simply merges the hash to protect the original.
valueHash
Object
An object with attribute name/value pairs
An object literal with 2 properties - "simple" and "complex", containing simple and complex attribute values respectively keyed by the top level attribute name, or null, if valueHash is falsey.
_parseColumns
data
Translate the input column format into a structure useful for rendering a
<thead>
, rows, and cells. The structure of the input is expected to be a
single array of objects, where each object corresponds to a <th>
. Those
objects may contain a children
property containing a similarly structured
array to indicate the nested cells should be grouped under the parent
column's colspan in a separate row of header cells. E.g.
[
{ key: 'id' }, // no nesting
{ key: 'name', children: [
{ key: 'firstName', label: 'First' },
{ key: 'lastName', label: 'Last' } ] }
]
would indicate two header rows with the first column 'id' being assigned a
rowspan
of 2
, the 'name' column appearing in the first row with a
colspan
of 2
, and the 'firstName' and 'lastName' columns appearing in
the second row, below the 'name' column.
| | name | | |---------------
Supported properties of the column objects include:
label
- The HTML content of the header cell.key
- If label
is not specified, the key
is used for content.children
- Array of columns to appear below this column in the next row.
abbr
- The content of the 'abbr' attribute of the <th>
title
- The content of the 'title' attribute of the <th>
headerTemplate
- Overrides the instance's CELL_TEMPLATE
for cells
in this column only.The output structure is basically a simulation of the <thead>
structure
with arrays for rows and objects for cells. Column objects have the
following properties added to them:
id
- (Defaulted by DataTable) The id to assign the rendered column
_colspan
- Per the <th>
attribute_rowspan
- Per the <th>
attribute_parent
- (Added by DataTable) If the column is a child of another
column, this points to its parent columnThe column object is also used to provide values for {placeholder}
replacement in the CELL_TEMPLATE
, so you can modify the template and
include other column object properties to populate them.
data
Object[]
Array of column object data
An array of arrays corresponding to the header row structure to render
_parseType
Returns an array with the detach key (if provided), and the prefixed event name from _getType Y.on('detachcategory| menu:click', fn)
_preInitEventCfg
config
Handles the special on, after and target properties which allow the user to easily configure on and after listeners as well as bubble targets during construction, prior to init.
config
Object
The user configuration object
_protectAttrs
attrs
Utility method to protect an attribute configuration hash, by merging the entire object and the individual attr config objects.
attrs
Object
A hash of attribute to configuration object pairs.
A protected version of the attrs argument.
_publish
fullType
etOpts
ceOpts
The low level event publish implementation. It expects all the massaging to have been done
outside of this method. e.g. the type
to fullType
conversion. It's designed to be a fast
path publish, which can be used by critical code paths to improve performance.
The published event. If called without etOpts
or ceOpts
, this will
be the default CustomEvent
instance, and can be configured independently.
_set
name
val
[opts]
Allows setting of readOnly/writeOnce attributes. See set for argument details.
A reference to the host object.
_setAttr
name
value
[opts]
force
Provides the common implementation for the public set and protected _set methods.
See set for argument details.
A reference to the host object.
_setAttrs
attrs
[opts]
Implementation behind the public setAttrs method, to set multiple attribute values.
A reference to the host object.
_setAttrVal
attrName
subAttrName
prevVal
newVal
[opts]
[attrCfg]
Updates the stored value of the attribute in the privately held State object, if validation and setter passes.
attrName
String
The attribute name.
subAttrName
String
The sub-attribute name, if setting a sub-attribute property ("x.y.z").
prevVal
Any
The currently stored value of the attribute.
newVal
Any
The value which is going to be stored.
[opts]
Object
optional
Optional data providing the circumstances for the change.
[attrCfg]
Object
optional
Optional config hash for the attribute. This is added for performance along the critical path, where the calling method has already obtained the config from state.
true if the new attribute value was stored, false if not.
_setStateVal
name
value
Sets the stored value for the attribute, in either the internal state object, or the state proxy if it exits
name
String
The name of the attribute
value
Any
The value of the attribute
addAttr
name
config
lazy
Adds an attribute with the provided configuration to the host object.
The config argument object supports the following properties:
A function, which will return the initial value to set on the attribute. This is useful for cases where the attribute configuration is defined statically, but needs to reference the host instance ("this") to obtain an initial value. If both the value and valueFn properties are defined, the value returned by the valueFn has precedence over the value property, unless it returns undefined, in which case the value property is used.
valueFn can also be set to a string, representing the name of the instance method to be used to retrieve the value.
The writeOnce attribute can also be set to the string "initOnly", in which case the attribute can only be set during initialization (when used with Base, this means it can only be set during construction)
The setter function used to massage or normalize the value passed to the set method for the attribute. The value returned by the setter will be the final stored value. Returning Attribute.INVALID_VALUE, from the setter will prevent the value from being stored.
setter can also be set to a string, representing the name of the instance method to be used as the setter function.
The getter function used to massage or normalize the value returned by the get method for the attribute. The value returned by the getter function is the value which will be returned to the user when they invoke get.
getter can also be set to a string, representing the name of the instance method to be used as the getter function.
The validator function invoked prior to setting the stored value. Returning false from the validator function will prevent the value from being stored.
validator can also be set to a string, representing the name of the instance method to be used as the validator function.
The setter, getter and validator are invoked with the value and name passed in as the first and second arguments, and with the context ("this") set to the host object.
Configuration properties outside of the list mentioned above are considered private properties used internally by attribute, and are not intended for public use.
name
String
The name of the attribute.
config
Object
An object with attribute configuration property/value pairs, specifying the configuration for the attribute.
NOTE: The configuration object is modified when adding an attribute, so if you need to protect the original values, you will need to merge the object.
lazy
Boolean
(optional) Whether or not to add this attribute lazily (on the first call to get/set).
A reference to the host object.
addAttrs
cfgs
values
lazy
Configures a group of attributes, and sets initial values.
NOTE: This method does not isolate the configuration object by merging/cloning. The caller is responsible for merging/cloning the configuration object if required.
cfgs
Object
An object with attribute name/configuration pairs.
values
Object
An object with attribute name/value pairs, defining the initial values to apply. Values defined in the cfgs argument will be over-written by values in this argument unless defined as read only.
lazy
Boolean
Whether or not to delay the intialization of these attributes until the first call to get/set. Individual attributes can over-ride this behavior by defining a lazyAdd configuration property in their configuration. See addAttr.
A reference to the host object.
addTarget
o
Registers another EventTarget as a bubble target. Bubble order is determined by the order registered. Multiple targets can be specified.
Events can only bubble if emitFacade is true.
Included in the event-custom-complex submodule.
o
EventTarget
the target to add
after
type
fn
[context]
[arg*]
Subscribe to a custom event hosted by this object. The supplied callback will execute after any listeners add via the subscribe method, and after the default function, if configured for the event, has executed.
A subscription handle capable of detaching the subscription
attachEvents
[events]
Attaches delegated event handlers to this view's container element. This
method is called internally to subscribe to events configured in the
events
attribute when the view is initialized.
You may override this method to customize the event attaching logic.
[events]
Object
optional
Hash of events to attach. See the docs for the
events
attribute for details on the format. If not specified, this
view's events
property will be used.
attrAdded
name
Checks if the given attribute has been added to the host
name
String
The name of the attribute to check.
true if an attribute with the given name has been added, false if it hasn't. This method will return true for lazily added attributes.
before
Executes the callback before a DOM event, custom event or method. If the first argument is a function, it is assumed the target is a method. For DOM and custom events, this is an alias for Y.on.
For DOM and custom events: type, callback, context, 0-n arguments
For methods: callback, object (method host), methodName, context, 0-n arguments
detach handle
bindUI
Binds event subscriptions from the UI and the source (if assigned).
bubble
evt
Propagate an event. Requires the event-custom-complex module.
evt
CustomEvent
the custom event to propagate
the aggregated return value from Event.Custom.fire
create
[container]
Creates and returns a container node for this view.
By default, the container is created from the HTML template specified in the
containerTemplate
property, and is not added to the DOM automatically.
You may override this method to customize how the container node is created
(such as by rendering it from a custom template format). Your method must
return a Y.Node
instance.
[container]
HTMLElement | Node | String
optional
Selector string, Y.Node
instance, or DOM element to use at the container node.
Node instance of the created container node.
destroy
[options]
Destroys this View, detaching any DOM events and optionally also destroying its container node.
By default, the container node will not be destroyed. Pass an options
object with a truthy remove
property to destroy the container as well.
destructor
Destroys the instance.
detach
type
fn
context
Detach one or more listeners the from the specified event
type
String | Object
Either the handle to the subscriber or the type of event. If the type is not specified, it will attempt to remove the listener from all hosted events.
fn
Function
The subscribed function to unsubscribe, if not supplied, all subscribers will be removed.
context
Object
The custom object passed to subscribe. This is optional, but if supplied will be used to disambiguate multiple listeners that are the same (e.g., you subscribe many object using a function that lives on the prototype)
the host
detachAll
type
Removes all listeners from the specified event. If the event type is not specified, all listeners from all hosted custom events will be removed.
type
String
The type, or name of the event
detachEvents
Detaches DOM events that have previously been attached to the container by
attachEvents()
.
fire
type
arguments
Fire a custom event by name. The callback functions will be executed from the context specified when the event was created, and with the following parameters.
The first argument is the event type, and any additional arguments are passed to the listeners as parameters. If the first of these is an object literal, and the event is configured to emit an event facade, that object is mixed into the event facade and the facade is provided in place of the original object.
If the custom event object hasn't been created, then the event hasn't been published and it has no subscribers. For performance sake, we immediate exit in this case. This means the event won't bubble, so if the intention is that a bubble target be notified, the event must be published on this object first.
type
String | Object
The type of the event, or an object that contains a 'type' property.
arguments
Object*
an arbitrary set of parameters to pass to the handler. If the first of these is an object literal and the event is configured to emit an event facade, the event facade will replace that parameter after the properties the object literal contains are copied to the event facade.
True if the whole lifecycle of the event went through, false if at any point the event propagation was halted.
get
name
Returns the current value of the attribute. If the attribute has been configured with a 'getter' function, this method will delegate to the 'getter' to obtain the value of the attribute.
name
String
The name of the attribute. If the value of the attribute is an Object,
dot notation can be used to obtain the value of a property of the object (e.g. get("x.y.z")
)
The value of the attribute
getAttrs
attrs
Gets multiple attribute values.
An object with attribute name/value pairs.
getClassName
token
Returns the generated CSS classname based on the input. If the host
attribute is configured, it will attempt to relay to its getClassName
or use its static NAME
property as a string base.
If host
is absent or has neither method nor NAME
, a CSS classname
will be generated using this class's NAME
.
token
String
multiple
Any number of token strings to assemble the classname from.
getEvent
type
prefixed
Returns the custom event of the provided type has been created, a falsy value otherwise
the custom event or null
getTargets
Returns an array of bubble targets for this object.
EventTarget[]
init
cfg
Init lifecycle method, invoked during construction. Sets up attributes and invokes initializers for the class hierarchy.
cfg
Object
Object with configuration property name/value pairs
A reference to this object
initializer
config
Initializes the instance. Reads the following configuration properties:
columns
- (REQUIRED) The initial column informationhost
- The object to serve as source of truth for column infoconfig
Object
Configuration data
modifyAttr
name
config
Updates the configuration of an attribute which has already been added.
The properties which can be modified through this interface are limited to the following subset of attributes, which can be safely modified after a value has already been set on the attribute:
Note: New attributes cannot be added using this interface. New attributes must be added using addAttr, or an appropriate manner for a class which utilises Attributes (e.g. the ATTRS property in Base).
on
type
fn
[context]
[arg*]
Subscribe a callback function to a custom event fired by this object or from an object that bubbles its events to this object.
Callback functions for events published with emitFacade = true
will
receive an EventFacade
as the first argument (typically named "e").
These callbacks can then call e.preventDefault()
to disable the
behavior published to that event's defaultFn
. See the EventFacade
API for all available properties and methods. Subscribers to
non-emitFacade
events will receive the arguments passed to fire()
after the event name.
To subscribe to multiple events at once, pass an object as the first argument, where the key:value pairs correspond to the eventName:callback, or pass an array of event names as the first argument to subscribe to all listed events with the same callback.
Returning false
from a callback is supported as an alternative to
calling e.preventDefault(); e.stopPropagation();
. However, it is
recommended to use the event methods whenever possible.
A subscription handle capable of detaching that subscription
once
type
fn
[context]
[arg*]
Listen to a custom event hosted by this object one time.
This is the equivalent to on
except the
listener is immediatelly detached when it is executed.
A subscription handle capable of detaching the subscription
onceAfter
type
fn
[context]
[arg*]
Listen to a custom event hosted by this object one time.
This is the equivalent to after
except the
listener is immediatelly detached when it is executed.
A subscription handle capable of detaching that subscription
parseType
type
[pre]
Takes the type parameter passed to 'on' and parses out the various pieces that could be included in the type. If the event type is passed without a prefix, it will be expanded to include the prefix one is supplied or the event target is configured with a default prefix.
an array containing:
publish
type
opts
Creates a new custom event of the specified type. If a custom event by that name already exists, it will not be re-created. In either case the custom event is returned.
type
String
the type, or name of the event
opts
Object
optional config params. Valid properties are:
the custom event
remove
Removes this view's container element from the DOM (if it's in the DOM), but doesn't destroy it or any event listeners attached to it.
removeAttr
name
Removes an attribute from the host object
name
String
The name of the attribute to be removed.
render
Creates the <thead>
Node content by assembling markup generated by
populating the ROW_TEMPLATE
and CELL_TEMPLATE
templates with content
from the columns
property.
reset
name
Resets the attribute (or all attributes) to its initial value, as long as the attribute is not readOnly, or writeOnce.
name
String
Optional. The name of the attribute to reset. If omitted, all attributes are reset.
A reference to the host object.
set
name
value
[opts]
Sets the value of an attribute.
name
String
The name of the attribute. If the
current value of the attribute is an Object, dot notation can be used
to set the value of a property within the object (e.g. set("x.y.z", 5)
).
value
Any
The value to set the attribute to.
[opts]
Object
optional
Optional data providing the circumstances for the change.
A reference to the host object.
setAttrs
attrs
[opts]
Sets multiple attribute values.
A reference to the host object.
subscribe
subscribe to an event
toString
Default toString implementation. Provides the constructor NAME and the instance guid, if set.
String representation for this object
unsubscribe
detach a listener
unsubscribeAll
type
Removes all listeners from the specified event. If the event type is not specified, all listeners from all hosted custom events will be removed.
type
String
The type, or name of the event
_allowAdHocAttrs
This tells Y.Base
that it should create ad-hoc attributes for config
properties passed to View's constructor. This makes it possible to
instantiate a view and set a bunch of attributes without having to subclass
Y.View
and declare all those attributes first.
Default: true
_eventHandles
Holds the event subscriptions needing to be detached when the instance is
destroy()
ed.
Default: undefined (initially unset)
CELL_TEMPLATE
Template used to create the table's header cell markup. Override this to customize how header cell markup is created.
Default: '<th id="{id}" colspan="{_colspan}" rowspan="{_rowspan}" class="{className}" scope="col" {_id}{abbr}{title}>{content}</th>'
columns
The data representation of the header rows to render. This is assigned by
parsing the columns
configuration array, and is used by the render()
method.
Default: (initially unset)
events
Hash of CSS selectors mapped to events to delegate to elements matching those selectors.
CSS selectors are relative to the container
element. Events are attached
to the container, and delegation is used so that subscribers are only
notified of events that occur on elements inside the container that match
the specified selectors. This allows the container's contents to be re-
rendered as needed without losing event subscriptions.
Event handlers can be specified either as functions or as strings that map to function names on this view instance or its prototype.
The this
object in event handlers will refer to this view instance. If
you'd prefer this
to be something else, use Y.bind()
to bind a custom
this
object.
Default: {}
var view = new Y.View({
events: {
// Call this.toggle()
whenever the element with the id
// "toggle-button" is clicked.
'#toggle-button': {click: 'toggle'},
// Call this.hoverOn()
when the mouse moves over any element
// with the "hoverable" class, and this.hoverOff()
when the
// mouse moves out of any element with the "hoverable" class.
'.hoverable': {
mouseover: 'hoverOn',
mouseout : 'hoverOff'
}
}
});
ROW_TEMPLATE
Template used to create the table's header row markup. Override this to customize the row markup.
Default: '<tr>{content}</tr>'
source
The object that serves as the source of truth for column and row data.
This property is assigned at instantiation from the source
property of
the configuration object passed to the constructor.
Default: (initially unset)
template
Template for this view's contents.
This is a convenience property that has no default behavior of its own.
It's only provided as a convention to allow you to store whatever you
consider to be a template, whether that's an HTML string, a Y.Node
instance, a Mustache template, or anything else your little heart
desires.
How this template gets used is entirely up to you and your custom
render()
method.
Default: ''
THEAD_TEMPLATE
HTML templates used to create the <thead>
containing the table headers.
Default: '<thead class="{className}">{content}</thead>'
container
Container node into which this view's content will be rendered.
The container node serves as the host for all DOM events attached by the view. Delegation is used to handle events on children of the container, allowing the container's contents to be re-rendered at any time without losing event subscriptions.
The default container is a <div>
Node, but you can override this in
a subclass, or by passing in a custom container
config value at
instantiation time. If you override the default container in a subclass
using ATTRS
, you must use the valueFn
property. The view's constructor
will ignore any assignments using value
.
When container
is overridden by a subclass or passed as a config
option at instantiation time, you can provide it as a selector string, a
DOM element, a Y.Node
instance, or (if you are subclassing and modifying
the attribute), a valueFn
function that returns a Y.Node
instance.
The value will be converted into a Y.Node
instance if it isn't one
already.
The container is not added to the page automatically. This allows you to have full control over how and when your view is actually rendered to the page.
Default: Y.Node.create(this.containerTemplate)
containerChange
Fires when the value for the configuration attribute container
is
changed. You can listen for the event using the on
method if you
wish to be notified before the attribute's value has changed, or
using the after
method if you wish to be notified after the
attribute's value has changed.
e
EventFacade
destroyed
Flag indicating whether or not this object has been through the destroy lifecycle phase.
Default: false
destroyedChange
Fires when the value for the configuration attribute destroyed
is
changed. You can listen for the event using the on
method if you
wish to be notified before the attribute's value has changed, or
using the after
method if you wish to be notified after the
attribute's value has changed.
e
EventFacade
initialized
Flag indicating whether or not this object has been through the init lifecycle phase.
Default: false
initializedChange
Fires when the value for the configuration attribute initialized
is
changed. You can listen for the event using the on
method if you
wish to be notified before the attribute's value has changed, or
using the after
method if you wish to be notified after the
attribute's value has changed.
e
EventFacade
destroy
Lifecycle event for the destroy phase, fired prior to destruction. Invoking the preventDefault method on the event object provided to subscribers will prevent destruction from proceeding.
Subscribers to the "after" moment of this event, will be notified after destruction is complete (and as a result cannot prevent destruction).
e
EventFacade
Event object
init
Lifecycle event for the init phase, fired prior to initialization. Invoking the preventDefault() method on the event object provided to subscribers will prevent initialization from occuring.
Subscribers to the "after" momemt of this event, will be notified after initialization of the object is complete (and therefore cannot prevent initialization).
e
EventFacade
Event object, with a cfg property which refers to the configuration object passed to the constructor.