TreeItem (Eclipse Platform API Specification)

java.lang.Object
- org.eclipse.swt.widgets.Widget
- - org.eclipse.swt.widgets.Item
  - - org.eclipse.swt.widgets.TreeItem

```
public class TreeItem
extends Item
```
Instances of this class represent a selectable user interface object that represents a hierarchy of tree items in a tree widget.

Styles:

(none)

Events:

(none)

IMPORTANT: This class is not intended to be subclassed.

See Also:

Tree, TreeItem, TreeColumn snippets, Sample code and further information

Restriction:

This class is not intended to be subclassed by clients.

Field Summary

Fields
Modifier and Type	Field and Description
`long`	`handle` the handle to the OS resource (Warning: This field is platform dependent) IMPORTANT: This field is not part of the SWT public API.

Constructor Summary

Constructors
Constructor and Description
`TreeItem(Tree parent, int style)` Constructs a new instance of this class given its parent (which must be a `Tree` or a `TreeItem`) and a style value describing its behavior and appearance.
`TreeItem(Tree parent, int style, int index)` Constructs a new instance of this class given its parent (which must be a `Tree` or a `TreeItem`), a style value describing its behavior and appearance, and the index at which to place it in the items maintained by its parent.
`TreeItem(TreeItem parentItem, int style)` Constructs a new instance of this class given its parent (which must be a `Tree` or a `TreeItem`) and a style value describing its behavior and appearance.
`TreeItem(TreeItem parentItem, int style, int index)` Constructs a new instance of this class given its parent (which must be a `Tree` or a `TreeItem`), a style value describing its behavior and appearance, and the index at which to place it in the items maintained by its parent.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`protected void`	`checkSubclass()` Checks that this class can be subclassed.
`void`	`clear(int index, boolean all)` Clears the item at the given zero-relative index in the receiver.
`void`	`clearAll(boolean all)` Clears all the items in the receiver.
`Color`	`getBackground()` Returns the receiver's background color.
`Color`	`getBackground(int index)` Returns the background color at the given column index in the receiver.
`Rectangle`	`getBounds()` Returns a rectangle describing the size and location of the receiver's text relative to its parent.
`Rectangle`	`getBounds(int index)` Returns a rectangle describing the receiver's size and location relative to its parent at a column in the tree.
`boolean`	`getChecked()` Returns `true` if the receiver is checked, and false otherwise.
`boolean`	`getExpanded()` Returns `true` if the receiver is expanded, and false otherwise.
`Font`	`getFont()` Returns the font that the receiver will use to paint textual information for this item.
`Font`	`getFont(int index)` Returns the font that the receiver will use to paint textual information for the specified cell in this item.
`Color`	`getForeground()` Returns the foreground color that the receiver will use to draw.
`Color`	`getForeground(int index)` Returns the foreground color at the given column index in the receiver.
`boolean`	`getGrayed()` Returns `true` if the receiver is grayed, and false otherwise.
`Image`	`getImage()` Returns the receiver's image if it has one, or null if it does not.
`Image`	`getImage(int index)` Returns the image stored at the given column index in the receiver, or null if the image has not been set or if the column does not exist.
`Rectangle`	`getImageBounds(int index)` Returns a rectangle describing the size and location relative to its parent of an image at a column in the tree.
`TreeItem`	`getItem(int index)` Returns the item at the given, zero-relative index in the receiver.
`int`	`getItemCount()` Returns the number of items contained in the receiver that are direct item children of the receiver.
`TreeItem[]`	`getItems()` Returns a (possibly empty) array of `TreeItem`s which are the direct item children of the receiver.
`Tree`	`getParent()` Returns the receiver's parent, which must be a `Tree`.
`TreeItem`	`getParentItem()` Returns the receiver's parent item, which must be a `TreeItem` or null when the receiver is a root.
`String`	`getText()` Returns the receiver's text, which will be an empty string if it has never been set.
`String`	`getText(int index)` Returns the text stored at the given column index in the receiver, or empty string if the text has not been set.
`Rectangle`	`getTextBounds(int index)` Returns a rectangle describing the size and location relative to its parent of the text at a column in the tree.
`int`	`indexOf(TreeItem item)` Searches the receiver's list starting at the first item (index 0) until an item is found that is equal to the argument, and returns the index of that item.
`void`	`removeAll()` Removes all of the items from the receiver.
`void`	`setBackground(Color color)` Sets the receiver's background color to the color specified by the argument, or to the default system color for the item if the argument is null.
`void`	`setBackground(int index, Color color)` Sets the background color at the given column index in the receiver to the color specified by the argument, or to the default system color for the item if the argument is null.
`void`	`setChecked(boolean checked)` Sets the checked state of the receiver.
`void`	`setExpanded(boolean expanded)` Sets the expanded state of the receiver.
`void`	`setFont(Font font)` Sets the font that the receiver will use to paint textual information for this item to the font specified by the argument, or to the default font for that kind of control if the argument is null.
`void`	`setFont(int index, Font font)` Sets the font that the receiver will use to paint textual information for the specified cell in this item to the font specified by the argument, or to the default font for that kind of control if the argument is null.
`void`	`setForeground(Color color)` Sets the receiver's foreground color to the color specified by the argument, or to the default system color for the item if the argument is null.
`void`	`setForeground(int index, Color color)` Sets the foreground color at the given column index in the receiver to the color specified by the argument, or to the default system color for the item if the argument is null.
`void`	`setGrayed(boolean grayed)` Sets the grayed state of the checkbox for this item.
`void`	`setImage(Image image)` Sets the receiver's image to the argument, which may be null indicating that no image should be displayed.
`void`	`setImage(Image[] images)` Sets the image for multiple columns in the tree.
`void`	`setImage(int index, Image image)` Sets the receiver's image at a column.
`void`	`setItemCount(int count)` Sets the number of child items contained in the receiver.
`void`	`setText(int index, String string)` Sets the receiver's text at a column Note: If control characters like '\n', '\t' etc. are used in the string, then the behavior is platform dependent.
`void`	`setText(String string)` Sets the receiver's text.
`void`	`setText(String[] strings)` Sets the text for multiple columns in the tree.

Methods inherited from class org.eclipse.swt.widgets.Widget
addDisposeListener, addListener, checkWidget, dispose, getData, getData, getDisplay, getListeners, getStyle, isAutoDirection, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, removeListener, reskin, setData, setData, toString

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

- Field Detail
  - handle
```
public long handle
```
    the handle to the OS resource (Warning: This field is platform dependent)
    IMPORTANT: This field is not part of the SWT public API. It is marked public only so that it can be shared within the packages provided by SWT. It is not available on all platforms and should never be accessed from application code.
    
    Restriction:
    
    This field is not intended to be referenced by clients.
- Constructor Detail
  - TreeItem
```
public TreeItem(Tree parent,
                int style)
```
    Constructs a new instance of this class given its parent (which must be a Tree or a TreeItem) and a style value describing its behavior and appearance. The item is added to the end of the items maintained by its parent.
    The style value is either one of the style constants defined in class SWT which is applicable to instances of this class, or must be built by bitwise OR'ing together (that is, using the int "|" operator) two or more of those SWT style constants. The class description lists the style constants that are applicable to the class. Style bits are also inherited from superclasses.
    Parameters:
    
    parent - a tree control which will be the parent of the new instance (cannot be null)
    
    style - the style of control to construct
    
    Throws:
    IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the parent is null
    SWTException -
    
    ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
    
    ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
    See Also:
    
    SWT, Widget.checkSubclass(), Widget.getStyle()
  - TreeItem
```
public TreeItem(Tree parent,
                int style,
                int index)
```
    Constructs a new instance of this class given its parent (which must be a Tree or a TreeItem), a style value describing its behavior and appearance, and the index at which to place it in the items maintained by its parent.
    The style value is either one of the style constants defined in class SWT which is applicable to instances of this class, or must be built by bitwise OR'ing together (that is, using the int "|" operator) two or more of those SWT style constants. The class description lists the style constants that are applicable to the class. Style bits are also inherited from superclasses.
    Parameters:
    
    parent - a tree control which will be the parent of the new instance (cannot be null)
    
    style - the style of control to construct
    
    index - the zero-relative index to store the receiver in its parent
    
    Throws:
    IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the parent is null
    
    ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)
    SWTException -
    
    ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
    
    ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
    See Also:
    
    SWT, Widget.checkSubclass(), Widget.getStyle()
  - TreeItem
```
public TreeItem(TreeItem parentItem,
                int style)
```
    Constructs a new instance of this class given its parent (which must be a Tree or a TreeItem) and a style value describing its behavior and appearance. The item is added to the end of the items maintained by its parent.
    The style value is either one of the style constants defined in class SWT which is applicable to instances of this class, or must be built by bitwise OR'ing together (that is, using the int "|" operator) two or more of those SWT style constants. The class description lists the style constants that are applicable to the class. Style bits are also inherited from superclasses.
    Parameters:
    
    parentItem - a tree control which will be the parent of the new instance (cannot be null)
    
    style - the style of control to construct
    
    Throws:
    IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the parent is null
    SWTException -
    
    ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
    
    ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
    See Also:
    
    SWT, Widget.checkSubclass(), Widget.getStyle()
  - TreeItem
```
public TreeItem(TreeItem parentItem,
                int style,
                int index)
```
    Constructs a new instance of this class given its parent (which must be a Tree or a TreeItem), a style value describing its behavior and appearance, and the index at which to place it in the items maintained by its parent.
    The style value is either one of the style constants defined in class SWT which is applicable to instances of this class, or must be built by bitwise OR'ing together (that is, using the int "|" operator) two or more of those SWT style constants. The class description lists the style constants that are applicable to the class. Style bits are also inherited from superclasses.
    Parameters:
    
    parentItem - a tree control which will be the parent of the new instance (cannot be null)
    
    style - the style of control to construct
    
    index - the zero-relative index to store the receiver in its parent
    
    Throws:
    IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the parent is null
    
    ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)
    SWTException -
    
    ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
    
    ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
    See Also:
    
    SWT, Widget.checkSubclass(), Widget.getStyle()
- Method Detail
  - checkSubclass
```
protected void checkSubclass()
```
    Description copied from class: Widget
    
    Checks that this class can be subclassed.
    The SWT class library is intended to be subclassed only at specific, controlled points (most notably, Composite and Canvas when implementing new widgets). This method enforces this rule unless it is overridden.
    IMPORTANT: By providing an implementation of this method that allows a subclass of a class which does not normally allow subclassing to be created, the implementer agrees to be fully responsible for the fact that any such subclass will likely fail between SWT releases and will be strongly platform specific. No support is provided for user-written classes which are implemented in this fashion.
    The ability to subclass outside of the allowed SWT classes is intended purely to enable those not on the SWT development team to implement patches in order to get around specific limitations in advance of when those limitations can be addressed by the team. Subclassing should not be attempted without an intimate and detailed understanding of the hierarchy.
    
    Overrides:
    
    checkSubclass in class Item
  - clear
```
public void clear(int index,
                  boolean all)
```
    Clears the item at the given zero-relative index in the receiver. The text, icon and other attributes of the item are set to the default value. If the tree was created with the SWT.VIRTUAL style, these attributes are requested again as needed.
    Parameters:
    
    index - the index of the item to clear
    
    all - true if all child items of the indexed item should be cleared recursively, and false otherwise
    
    Throws:
    IllegalArgumentException -
    
    ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)
    SWTException -
    
    ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    
    ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
    Since:
    
    3.2
    
    See Also:
    
    SWT.VIRTUAL, SWT.SetData
  - clearAll
```
public void clearAll(boolean all)
```
    Clears all the items in the receiver. The text, icon and other attributes of the items are set to their default values. If the tree was created with the SWT.VIRTUAL style, these attributes are requested again as needed.
    Parameters:
    
    all - true if all child items should be cleared recursively, and false otherwise
    
    Throws:
    SWTException -
    
    ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    
    ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
    Since:
    
    3.2
    
    See Also:
    
    SWT.VIRTUAL, SWT.SetData
  - getBackground
```
public Color getBackground()
```
    Returns the receiver's background color.
    Returns:
    
    the background color
    
    Throws:
    SWTException -
    
    ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    
    ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
    Since:
    
    2.0
  - getBackground
```
public Color getBackground(int index)
```
    Returns the background color at the given column index in the receiver.
    Parameters:
    
    index - the column index
    
    Returns:
    
    the background color
    
    Throws:
    SWTException -
    
    ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    
    ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
    Since:
    
    3.1
  - getBounds
```
public Rectangle getBounds()
```
    Returns a rectangle describing the size and location of the receiver's text relative to its parent.
    Returns:
    
    the bounding rectangle of the receiver's text
    
    Throws:
    SWTException -
    
    ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    
    ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
  - getBounds
```
public Rectangle getBounds(int index)
```
    Returns a rectangle describing the receiver's size and location relative to its parent at a column in the tree.
    Parameters:
    
    index - the index that specifies the column
    
    Returns:
    
    the receiver's bounding column rectangle
    
    Throws:
    SWTException -
    
    ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    
    ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
    Since:
    
    3.1
  - getChecked
```
public boolean getChecked()
```
    Returns true if the receiver is checked, and false otherwise. When the parent does not have the CHECK style, return false.
    Returns: the checked state Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
  getExpanded public boolean getExpanded() Returns true if the receiver is expanded, and false otherwise. Returns: the expanded state Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver getFont public Font getFont() Returns the font that the receiver will use to paint textual information for this item. Returns: the receiver's font Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.0 getFont public Font getFont(int index) Returns the font that the receiver will use to paint textual information for the specified cell in this item. Parameters: index - the column index Returns: the receiver's font Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 getForeground public Color getForeground() Returns the foreground color that the receiver will use to draw. Returns: the receiver's foreground color Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 2.0 getForeground public Color getForeground(int index) Returns the foreground color at the given column index in the receiver. Parameters: index - the column index Returns: the foreground color Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 getGrayed public boolean getGrayed() Returns true if the receiver is grayed, and false otherwise. When the parent does not have the CHECK style, return false. Returns: the grayed state of the checkbox Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver getItem public TreeItem getItem(int index) Returns the item at the given, zero-relative index in the receiver. Throws an exception if the index is out of range. Parameters: index - the index of the item to return Returns: the item at the given index Throws: IllegalArgumentException - ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive) SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 getItemCount public int getItemCount() Returns the number of items contained in the receiver that are direct item children of the receiver. Returns: the number of items Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver getItems public TreeItem[] getItems() Returns a (possibly empty) array of TreeItems which are the direct item children of the receiver. Note: This is not the actual structure used by the receiver to maintain its list of items, so modifying the array will not affect the receiver. Returns: the receiver's items Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver getImage public Image getImage() Description copied from class: Item Returns the receiver's image if it has one, or null if it does not. Overrides: getImage in class Item Returns: the receiver's image getImage public Image getImage(int index) Returns the image stored at the given column index in the receiver, or null if the image has not been set or if the column does not exist. Parameters: index - the column index Returns: the image stored at the given column index in the receiver Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 getImageBounds public Rectangle getImageBounds(int index) Returns a rectangle describing the size and location relative to its parent of an image at a column in the tree. Parameters: index - the index that specifies the column Returns: the receiver's bounding image rectangle Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 getParent public Tree getParent() Returns the receiver's parent, which must be a Tree. Returns: the receiver's parent Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver getParentItem public TreeItem getParentItem() Returns the receiver's parent item, which must be a TreeItem or null when the receiver is a root. Returns: the receiver's parent item Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver getText public String getText() Description copied from class: Item Returns the receiver's text, which will be an empty string if it has never been set. Overrides: getText in class Item Returns: the receiver's text getText public String getText(int index) Returns the text stored at the given column index in the receiver, or empty string if the text has not been set. Parameters: index - the column index Returns: the text stored at the given column index in the receiver Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 getTextBounds public Rectangle getTextBounds(int index) Returns a rectangle describing the size and location relative to its parent of the text at a column in the tree. Parameters: index - the index that specifies the column Returns: the receiver's bounding text rectangle Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.3 indexOf public int indexOf(TreeItem item) Searches the receiver's list starting at the first item (index 0) until an item is found that is equal to the argument, and returns the index of that item. If no item is found, returns -1. Parameters: item - the search item Returns: the index of the item Throws: IllegalArgumentException - ERROR_NULL_ARGUMENT - if the item is null ERROR_INVALID_ARGUMENT - if the item has been disposed SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 removeAll public void removeAll() Removes all of the items from the receiver. Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 setBackground public void setBackground(Color color) Sets the receiver's background color to the color specified by the argument, or to the default system color for the item if the argument is null. Parameters: color - the new color (or null) Throws: IllegalArgumentException - ERROR_INVALID_ARGUMENT - if the argument has been disposed SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 2.0 setBackground public void setBackground(int index, Color color) Sets the background color at the given column index in the receiver to the color specified by the argument, or to the default system color for the item if the argument is null. Parameters: index - the column index color - the new color (or null) Throws: IllegalArgumentException - ERROR_INVALID_ARGUMENT - if the argument has been disposed SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 setChecked public void setChecked(boolean checked) Sets the checked state of the receiver. Parameters: checked - the new checked state Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver setExpanded public void setExpanded(boolean expanded) Sets the expanded state of the receiver. Parameters: expanded - the new expanded state Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver setFont public void setFont(Font font) Sets the font that the receiver will use to paint textual information for this item to the font specified by the argument, or to the default font for that kind of control if the argument is null. Parameters: font - the new font (or null) Throws: IllegalArgumentException - ERROR_INVALID_ARGUMENT - if the argument has been disposed SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.0 setFont public void setFont(int index, Font font) Sets the font that the receiver will use to paint textual information for the specified cell in this item to the font specified by the argument, or to the default font for that kind of control if the argument is null. Parameters: index - the column index font - the new font (or null) Throws: IllegalArgumentException - ERROR_INVALID_ARGUMENT - if the argument has been disposed SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 setForeground public void setForeground(Color color) Sets the receiver's foreground color to the color specified by the argument, or to the default system color for the item if the argument is null. Parameters: color - the new color (or null) Throws: IllegalArgumentException - ERROR_INVALID_ARGUMENT - if the argument has been disposed SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 2.0 setForeground public void setForeground(int index, Color color) Sets the foreground color at the given column index in the receiver to the color specified by the argument, or to the default system color for the item if the argument is null. Parameters: index - the column index color - the new color (or null) Throws: IllegalArgumentException - ERROR_INVALID_ARGUMENT - if the argument has been disposed SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 setGrayed public void setGrayed(boolean grayed) Sets the grayed state of the checkbox for this item. This state change only applies if the Tree was created with the SWT.CHECK style. Parameters: grayed - the new grayed state of the checkbox Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver setImage public void setImage(Image[] images) Sets the image for multiple columns in the tree. Parameters: images - the array of new images Throws: IllegalArgumentException - ERROR_NULL_ARGUMENT - if the array of images is null ERROR_INVALID_ARGUMENT - if one of the images has been disposed SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 setImage public void setImage(int index, Image image) Sets the receiver's image at a column. Parameters: index - the column index image - the new image Throws: IllegalArgumentException - ERROR_INVALID_ARGUMENT - if the image has been disposed SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 setImage public void setImage(Image image) Description copied from class: Item Sets the receiver's image to the argument, which may be null indicating that no image should be displayed. Overrides: setImage in class Item Parameters: image - the image to display on the receiver (may be null) setItemCount public void setItemCount(int count) Sets the number of child items contained in the receiver. Parameters: count - the number of items Throws: SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.2 setText public void setText(String[] strings) Sets the text for multiple columns in the tree. Note: If control characters like '\n', '\t' etc. are used in the string, then the behavior is platform dependent. Parameters: strings - the array of new strings Throws: IllegalArgumentException - ERROR_NULL_ARGUMENT - if the text is null SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 setText public void setText(int index, String string) Sets the receiver's text at a column Note: If control characters like '\n', '\t' etc. are used in the string, then the behavior is platform dependent. Parameters: index - the column index string - the new text Throws: IllegalArgumentException - ERROR_NULL_ARGUMENT - if the text is null SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 3.1 setText public void setText(String string) Description copied from class: Item Sets the receiver's text. Note: If control characters like '\n', '\t' etc. are used in the string, then the behavior is platform dependent. Overrides: setText in class Item Parameters: string - the new text

Class TreeItem

Field Summary

Constructor Summary

Method Summary

Methods inherited from class org.eclipse.swt.widgets.Widget

Methods inherited from class java.lang.Object

Field Detail

handle

Constructor Detail

TreeItem

TreeItem

TreeItem

TreeItem

Method Detail

checkSubclass

clear

clearAll

getBackground

getBackground

getBounds

getBounds

getChecked

getExpanded

getFont

getFont

getForeground

getForeground

getGrayed

getItem

getItemCount

getItems

getImage

getImage

getImageBounds

getParent

getParentItem

getText

getText

getTextBounds

indexOf

removeAll

setBackground

setBackground

setChecked

setExpanded

setFont

setFont

setForeground

setForeground

setGrayed

setImage

setImage

setImage

setItemCount

setText

setText

setText