HostView

java.lang.Object
- ViewGroup
- - com.facebook.rendercore.Host
  - - com.facebook.rendercore.HostView

Direct Known Subclasses:

LazyMeasureHostView, RenderTreeHostView, RootHostView
```
public class HostView
extends Host
```
A ViewGroup that can be used as a host for subtrees in a RenderCore tree.

Constructor Summary

Constructors
Constructor and Description

HostView(Context context)

HostView(Context context, AttributeSet attrs)

Constructors
Constructor and Description
`HostView(Context context)`
`HostView(Context context, AttributeSet attrs)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`dispatchDraw(Canvas canvas)`
`void`	`draw(Canvas canvas)`
`protected void`	`drawableStateChanged()`
`protected int`	`getChildDrawingOrder(int childCount, int i)`
`java.lang.String`	`getDescriptionOfMountedItems()`
`MountItem`	`getMountItemAt(int index)`
`int`	`getMountItemCount()`
`java.lang.Object`	`getTag()`
`java.lang.Object`	`getTag(int key)`
`void`	`jumpDrawablesToCurrentState()`
`void`	`mount(int index, MountItem mountItem)` Mounts the given `MountItem` with unique index.
`void`	`moveItem(MountItem item, int oldIndex, int newIndex)` Moves the MountItem associated to oldIndex in the newIndex position.
`boolean`	`onInterceptTouchEvent(MotionEvent ev)`
`protected void`	`onLayout(boolean changed, int l, int t, int r, int b)`
`protected void`	`onSizeChanged(int w, int h, int oldw, int oldh)`
`boolean`	`onTouchEvent(MotionEvent event)`
`void`	`requestLayout()`
`void`	`safelyUnmountAll()` Use this API to remove all mounted items from the Host to recover from errors.
`void`	`setForegroundCompat(Drawable drawable)`
`void`	`setInLayout()`
`void`	`setInterceptTouchEventHandler(InterceptTouchHandler interceptTouchEventHandler)` Sets an InterceptTouchHandler that will be invoked when `onInterceptTouchEvent(MotionEvent)` is called.
`void`	`setViewTag(java.lang.Object viewTag)` Sets view tag on this host.
`void`	`setViewTags(<any> viewTags)` Sets view tags on this host.
`void`	`setVisibility(int visibility)`
`boolean`	`shouldDelayChildPressedState()`
`protected boolean`	`shouldRequestLayout()`
`void`	`unmount(int index, MountItem mountItem)` Unmounts the given `MountItem` with unique index.
`void`	`unmount(MountItem item)` Unmounts the given `MountItem`
`void`	`unsetInLayout()`
`protected boolean`	`verifyDrawable(Drawable who)`

Methods inherited from class com.facebook.rendercore.Host
getClipChildren, setClipChildren

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - HostView
```
public HostView(Context context)
```
  - HostView
```
public HostView(Context context,
                AttributeSet attrs)
```
- Method Detail
  - mount
```
public void mount(int index,
                  MountItem mountItem)
```
    Description copied from class: Host
    
    Mounts the given MountItem with unique index.
    
    Specified by:
    
    mount in class Host
    
    Parameters:
    
    index - index of the MountItem. Guaranteed to be the same index as is passed for the corresponding unmount(index, mountItem) call.
    
    mountItem - item to be mounted into the host.
  - unmount
```
public void unmount(MountItem item)
```
    Description copied from class: Host
    
    Unmounts the given MountItem
    
    Specified by:
    
    unmount in class Host
    
    Parameters:
    
    item - item to be unmounted from the host.
  - unmount
```
public void unmount(int index,
                    MountItem mountItem)
```
    Description copied from class: Host
    
    Unmounts the given MountItem with unique index.
    
    Specified by:
    
    unmount in class Host
    
    Parameters:
    
    index - index of the MountItem. Guaranteed to be the same index as was passed for the corresponding mount(index, mountItem) call.
    
    mountItem - item to be unmounted from the host.
  - getMountItemCount
```
public int getMountItemCount()
```
    Specified by:
    
    getMountItemCount in class Host
    
    Returns:
    
    number of MountItems that are currently mounted in the host.
  - getMountItemAt
```
public MountItem getMountItemAt(int index)
```
    Specified by:
    
    getMountItemAt in class Host
    
    Returns:
    
    the MountItem that was mounted with the given index.
  - moveItem
```
public void moveItem(MountItem item,
                     int oldIndex,
                     int newIndex)
```
    Description copied from class: Host
    
    Moves the MountItem associated to oldIndex in the newIndex position. This happens when a RootHostView needs to re-arrange the internal order of its items. If an item is already present in newIndex the item is guaranteed to be either unmounted or moved to a different index by subsequent calls to either Host.unmount(int, MountItem) or Host.moveItem(MountItem, int, int).
    
    Specified by:
    
    moveItem in class Host
    
    Parameters:
    
    item - The item that has been moved.
    
    oldIndex - The current index of the MountItem.
    
    newIndex - The new index of the MountItem.
  - setInterceptTouchEventHandler
```
public void setInterceptTouchEventHandler(InterceptTouchHandler interceptTouchEventHandler)
```
    Sets an InterceptTouchHandler that will be invoked when onInterceptTouchEvent(MotionEvent) is called.
    
    Parameters:
    
    interceptTouchEventHandler - the handler to be set on this host.
  - onInterceptTouchEvent
```
public boolean onInterceptTouchEvent(MotionEvent ev)
```
  - dispatchDraw
```
public void dispatchDraw(Canvas canvas)
```
  - getChildDrawingOrder
```
protected int getChildDrawingOrder(int childCount,
                                   int i)
```
  - shouldDelayChildPressedState
```
public boolean shouldDelayChildPressedState()
```
  - onTouchEvent
```
public boolean onTouchEvent(MotionEvent event)
```
  - onLayout
```
protected final void onLayout(boolean changed,
                              int l,
                              int t,
                              int r,
                              int b)
```
  - requestLayout
```
public void requestLayout()
```
  - shouldRequestLayout
```
protected boolean shouldRequestLayout()
```
  - verifyDrawable
```
protected boolean verifyDrawable(Drawable who)
```
  - drawableStateChanged
```
protected void drawableStateChanged()
```
  - jumpDrawablesToCurrentState
```
public void jumpDrawablesToCurrentState()
```
  - setVisibility
```
public void setVisibility(int visibility)
```
  - setViewTag
```
public void setViewTag(java.lang.Object viewTag)
```
    Sets view tag on this host.
    
    Parameters:
    
    viewTag - the object to set as tag.
  - setViewTags
```
public void setViewTags(<any> viewTags)
```
    Sets view tags on this host.
    
    Parameters:
    
    viewTags - the map containing the tags by id.
  - getTag
```
public java.lang.Object getTag()
```
  - getTag
```
public java.lang.Object getTag(int key)
```
  - onSizeChanged
```
protected void onSizeChanged(int w,
                             int h,
                             int oldw,
                             int oldh)
```
  - draw
```
public void draw(Canvas canvas)
```
  - setForegroundCompat
```
public void setForegroundCompat(Drawable drawable)
```
  - getDescriptionOfMountedItems
```
public java.lang.String getDescriptionOfMountedItems()
```
    Overrides:
    
    getDescriptionOfMountedItems in class Host
  - safelyUnmountAll
```
public void safelyUnmountAll()
```
    Description copied from class: Host
    
    Use this API to remove all mounted items from the Host to recover from errors.
    
    Overrides:
    
    safelyUnmountAll in class Host
  - setInLayout
```
public void setInLayout()
```
    Overrides:
    
    setInLayout in class Host
  - unsetInLayout
```
public void unsetInLayout()
```
    Overrides:
    
    unsetInLayout in class Host

Class HostView

Constructor Summary

Method Summary

Methods inherited from class com.facebook.rendercore.Host

Methods inherited from class java.lang.Object

Constructor Detail

HostView

HostView

Method Detail

mount

unmount

unmount

getMountItemCount

getMountItemAt

moveItem

setInterceptTouchEventHandler

onInterceptTouchEvent

dispatchDraw

getChildDrawingOrder

shouldDelayChildPressedState

onTouchEvent

onLayout

requestLayout

shouldRequestLayout

verifyDrawable

drawableStateChanged

jumpDrawablesToCurrentState

setVisibility

setViewTag

setViewTags

getTag

getTag

onSizeChanged

draw

setForegroundCompat

getDescriptionOfMountedItems

safelyUnmountAll

setInLayout

unsetInLayout