Package org.zkoss.stateless.sul

Interface ITreeitem

All Superinterfaces:

IComponent<ITreeitem>, IComposite<ITreeitem,ITreeitemComposite>, IDisable<ITreeitem>, IHtmlBasedComponent<ITreeitem>, IXulElement<ITreeitem>

public interface ITreeitem
extends IXulElement<ITreeitem>, IDisable<ITreeitem>, IComposite<ITreeitem,ITreeitemComposite>

Immutable Treeitem component

Treeitem contains a row of data (treerow), and an optional treechildren.

If the component doesn't contain a treechildren, it is a leaf node that doesn't accept any child items.

If it contains a treechildren, it is a branch node that might contain other items. For a branch node, an +/- button will appear at the beginning of the row, such that user could open and close the item by clicking on the +/- button.

Support @Action

Name	Action Type
onOpen	ActionData: OpenData Denotes user has opened or closed a component. It is useful to implement load-on-demand by listening to the onOpen action, and creating components when the first time the component is opened.

Author:

jumperchen

See Also:

• Treeitem

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	ITreeitem.Builder	Builds instances of type ITreeitem.
static class	ITreeitem.Updater	Builds an updater of type ITreeitem for UiAgent.smartUpdate(Locator, SmartUpdater).

Field Summary

Fields

Modifier and Type	Field	Description
static final ITreeitem	DEFAULT	Constant for default attributes of this immutable component.

Method Summary

Modifier and Type	Method	Description
default String	getHflex()	Return horizontal flex hint of this component.
default String	getImage()	Returns the image of the first ITreecell it contains.
default int	getIndex()	Return the index of this item
default String	getLabel()	Returns the label of the first ITreecell it contains.
ITreechildren	getTreechildren()	Returns the treechildren that this tree item owns, or null if doesn't have any child.
ITreerow	getTreerow()	Returns the treerow that this tree item owns (might null).
default String	getWidgetClass()	Returns the client widget class.
default String	getWidth()	Returns the width of the component.
default boolean	isContainer()	Returns whether the component is to act as a container which can have sublevel items.
default boolean	isEmpty()	Returns whether to contain any sublevel tree items or not.
default boolean	isLoaded()	Return true whether all children of this tree item, if any, is loaded at client
default boolean	isOpen()	Returns whether this container is open.
default boolean	isRendered()	Returns true whether this tree item is rendered at client.
default boolean	isSelectable()	Returns whether it is selectable.
default boolean	isSelected()	Returns whether this item is selected.
static ITreeitem	of(String label)	Returns the instance with the given label.
static ITreeitem	of(String label, Iterable<? extends ITreeitem> items)	Returns the instance with the given label and all sublevel items.
static ITreeitem	of(String label, ITreeitem... items)	Returns the instance with the given label and all sublevel items.
static ITreeitem	ofId(String id)	Returns the instance with the given id.
static ITreeitem	ofTreecells(Iterable<? extends ITreecell<IAnyGroup>> treecells)	Returns the instance with the given tree cells.
static ITreeitem	ofTreecells(ITreecell<IAnyGroup>... treecells)	Returns the instance with the given tree cells.
static ITreeitem	ofTreerow(ITreerow treerow)	Returns the instance with the given treerow.
default ITreeitem	withAllComponents(Iterable<? extends ITreeitemComposite> elements)	Copy the current immutable object with elements that replace the content of children.
default ITreeitem	withHflex(String hflex)	To control the size of Treeitem related components, please refer to ITree and ITreecol instead.
ITreeitem	withImage(String image)	Returns a copy of this immutable component with the specified image.
ITreeitem	withIndex(int index)	Returns a copy of this immutable component with the specified index.
ITreeitem	withLabel(String label)	Returns a copy of this immutable component with the specified label.
ITreeitem	withOpen(boolean open)	Returns a copy of this immutable component with the specified open.
ITreeitem	withSelectable(boolean selectable)	Returns a copy of this immutable component with the specified selectable.
ITreeitem	withSelected(boolean selected)	Returns a copy of this immutable component with the specified selected.
ITreeitem	withTreechildren(ITreechildren treechildren)	Returns a copy of this immutable component with the specified treechildren.
ITreeitem	withTreerow(ITreerow treerow)	Returns a copy of this immutable component with the specified treerow.
default ITreeitem	withWidth(String width)	To control the size of Treeitem related components, please refer to ITree and ITreecol instead.

Methods inherited from interface org.zkoss.stateless.sul.IComponent

getAction, getActions, getClientAttributes, getId, getMold, getWidgetListeners, getWidgetOverrides, isVisible, withAction, withAction, withAction, withAction, withAction, withAction, withAction, withAction, withAction, withAction, withAction, withActions, withActions, withClientAttribute, withClientAttributes, withId, withMold, withVisible, withWidgetClass, withWidgetListener, withWidgetListeners, withWidgetOverride, withWidgetOverrides

Methods inherited from interface org.zkoss.stateless.sul.IDisable

isDisabled, withDisabled

Methods inherited from interface org.zkoss.stateless.sul.IHtmlBasedComponent

getClientAction, getDraggable, getDroppable, getHeight, getLeft, getRenderdefer, getSclass, getSkeleton, getStyle, getTabindex, getTooltiptext, getTop, getVflex, getZclass, getZIndex, isFocus, withClientAction, withDraggable, withDroppable, withFocus, withHeight, withLeft, withRenderdefer, withSclass, withSkeleton, withStyle, withTabindex, withTabindex, withTooltiptext, withTop, withVflex, withZclass, withZIndex

Methods inherited from interface org.zkoss.stateless.sul.IXulElement

getContext, getCtrlKeys, getPopup, getTooltip, withContext, withCtrlKeys, withPopup, withTooltip

Field Details

DEFAULT

static final ITreeitem DEFAULT

Constant for default attributes of this immutable component.

Method Details

getWidgetClass

default String getWidgetClass()

Returns the client widget class.

Default: "zul.sel.Treeitem"

Specified by:

getWidgetClass in interface IComponent<ITreeitem>

getWidth

@Derived
@Nullable
default String getWidth()

Description copied from interface: IHtmlBasedComponent

Returns the width of the component. If not specified, null is assumed.

Default: null

Specified by:

getWidth in interface IHtmlBasedComponent<ITreeitem>

withWidth

default ITreeitem withWidth(@Nullable
 String width)

To control the size of Treeitem related components, please refer to ITree and ITreecol instead.

Specified by:

withWidth in interface IHtmlBasedComponent<ITreeitem>

Parameters:

width - The width of the component.

Default: null

Returns:

A modified copy of the this object

getHflex

@Derived
@Nullable
default String getHflex()

Description copied from interface: IHtmlBasedComponent

Return horizontal flex hint of this component.

Default: null

Specified by:

getHflex in interface IHtmlBasedComponent<ITreeitem>

withHflex

default ITreeitem withHflex(@Nullable
 String hflex)

To control the size of Treeitem related components, please refer to ITree and ITreecol instead.

Specified by:

withHflex in interface IHtmlBasedComponent<ITreeitem>

Parameters:

hflex - The horizontal flex hint.

Default: null

Returns:

A modified copy of the this object

withAllComponents

default ITreeitem withAllComponents(Iterable<? extends ITreeitemComposite> elements)

Description copied from interface: IComposite

Copy the current immutable object with elements that replace the content of children. A shallow reference equality check is used to prevent copying of the same value by returning this.

Specified by:

withAllComponents in interface IComposite<ITreeitem,ITreeitemComposite>

Parameters:

elements - An iterable of children elements to set

Returns:

A modified copy of this object

getTreerow

@Nullable
ITreerow getTreerow()

Returns the treerow that this tree item owns (might null). Each tree items has exactly one tree row.

withTreerow

ITreeitem withTreerow(@Nullable
 ITreerow treerow)

Returns a copy of this immutable component with the specified treerow.

Sets the treerow as a child to this component

Parameters:

treerow - The treerow child.

Default: null.

Returns:

A modified copy of the this object

getTreechildren

@Nullable
ITreechildren getTreechildren()

Returns the treechildren that this tree item owns, or null if doesn't have any child.

withTreechildren

ITreeitem withTreechildren(@Nullable
 ITreechildren treechildren)

Returns a copy of this immutable component with the specified treechildren.

Sets the treechildren as a child to this component

Parameters:

treechildren - The treechildren child.

Default: null.

Returns:

A modified copy of the this object

getIndex

default int getIndex()

Return the index of this item

Default: -1, meaning not set

withIndex

ITreeitem withIndex(int index)

Returns a copy of this immutable component with the specified index.

Sets the index of this component.

Parameters:

index - The index of the child from its parent component.

Default: -1, meaning not set.

Returns:

A modified copy of the this object

getImage

@Nullable
default String getImage()

Returns the image of the first ITreecell it contains.

Default: null

withImage

ITreeitem withImage(@Nullable
 String image)

Returns a copy of this immutable component with the specified image.

Sets the image of the first ITreecell it contains.

If treerow and treecell are not created, this method create them automatically.

Parameters:

image - The image of the first ITreecell it contains.

Default: null.

Returns:

A modified copy of the this object

getLabel

@Nullable
default String getLabel()

Returns the label of the first ITreecell it contains.

Default: null

withLabel

ITreeitem withLabel(@Nullable
 String label)

Returns a copy of this immutable component with the specified label.

Sets the label of the first ITreecell it contains.

If treerow and treecell are not created, this method create them automatically.

Parameters:

label - The label of the first ITreecell it contains.

Default: null.

Returns:

A modified copy of the this object

isOpen

default boolean isOpen()

Returns whether this container is open.

Default: true.

withOpen

ITreeitem withOpen(boolean open)

Returns a copy of this immutable component with the specified open.

Sets whether this container is open.

Parameters:

open - false to hide all sublevel items.

Default: true.

Returns:

A modified copy of the this object

isSelected

default boolean isSelected()

Returns whether this item is selected.

Default: false

withSelected

ITreeitem withSelected(boolean selected)

Returns a copy of this immutable component with the specified selected.

Sets whether the component is selected.

Parameters:

selected - true to select this component.

Default: false.

Returns:

A modified copy of the this object

isLoaded

default boolean isLoaded()

Return true whether all children of this tree item, if any, is loaded at client

Default: false

isSelectable

default boolean isSelectable()

Returns whether it is selectable.

Default: true.

isContainer

@Lazy
default boolean isContainer()

Returns whether the component is to act as a container which can have sublevel items.

isEmpty

@Lazy
default boolean isEmpty()

Returns whether to contain any sublevel tree items or not.

withSelectable

ITreeitem withSelectable(boolean selectable)

Returns a copy of this immutable component with the specified selectable.

If the tree is in a checkmark mode, the selectable state will affect the checkable icon to display or not.

Parameters:

selectable - false to indicate the checkable icon is not displayed.

Default: true.

Returns:

A modified copy of the this object

isRendered

default boolean isRendered()

Returns true whether this tree item is rendered at client. Unlike isLoaded() which is used to check whether all children of this tree item are loaded.

Default: true

of

static ITreeitem of(String label)

Returns the instance with the given label.

Parameters:

label - The label that the first tree cell holds.

of

static ITreeitem of(String label,
 ITreeitem... items)

Returns the instance with the given label and all sublevel items.

Parameters:

label - The label that the first tree cell holds.

items - All sublevel items belong to this item

of

static ITreeitem of(String label,
 Iterable<? extends ITreeitem> items)

Returns the instance with the given label and all sublevel items.

Parameters:

label - The label that the first tree cell holds.

items - All sublevel items belong to this item

ofId

static ITreeitem ofId(String id)

Returns the instance with the given id.

Parameters:

id - The id to identify this component

ofTreerow

static ITreeitem ofTreerow(ITreerow treerow)

Returns the instance with the given treerow.

Parameters:

treerow - The treerow belongs to this component.

ofTreecells

static ITreeitem ofTreecells(ITreecell<IAnyGroup>... treecells)

Returns the instance with the given tree cells.

Parameters:

treecells - All tree cells belong to this component.

ofTreecells

static ITreeitem ofTreecells(Iterable<? extends ITreecell<IAnyGroup>> treecells)

Returns the instance with the given tree cells.

Parameters:

treecells - All tree cells belong to this component.