Package org.eclipse.e4.ui.dialogs.filteredtree

Class FilteredTree

java.lang.Object

org.eclipse.swt.widgets.Widget

org.eclipse.swt.widgets.Control

org.eclipse.swt.widgets.Scrollable

org.eclipse.swt.widgets.Composite

org.eclipse.e4.ui.dialogs.filteredtree.FilteredTree

All Implemented Interfaces:

Drawable

public class FilteredTree
extends Composite

Based on org.eclipse.ui.dialogs.FilteredTree.

Since:

1.2

Field Summary

Fields inherited from class org.eclipse.swt.widgets.Control

handle

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	FilteredTree(Composite parent)	Create a new instance of the receiver.
	FilteredTree(Composite parent, int treeStyle, PatternFilter filter)	Create a new instance of the receiver.

Method Summary

Modifier and Type	Method	Description
protected void	clearText()	Clears the text in the filter text widget.
protected void	createControl(Composite parent, int treeStyle)	Create the filtered tree's controls.
protected Composite	createFilterControls(Composite parent)	Create the filter controls.
protected void	createFilterText(Composite parent)	Creates the filter text and adds listeners.
protected Control	createTreeControl(Composite parent, int style)	Creates and set up the tree and tree viewer.
protected Text	doCreateFilterText(Composite parent)	Creates the text control for entering the filter text.
protected BasicUIJob	doCreateRefreshJob()	Creates a workbench job that will refresh the tree based on the current filter text.
protected TreeViewer	doCreateTreeViewer(Composite parent, int style)	Creates the tree viewer.
static Font	getBoldFont(Object element, FilteredTree tree, PatternFilter filter)	Return a bold font if the given element matches the given pattern.
Text	getFilterControl()	Get the filter text for the receiver, if it was created.
protected String	getFilterString()	Convenience method to return the text of the filter control.
protected String	getInitialText()	Get the initial text for the receiver.
final PatternFilter	getPatternFilter()	Returns the pattern filter used by this tree.
protected long	getRefreshJobDelay()	Return the time delay that should be used when scheduling the filter refresh job.
TreeViewer	getViewer()	Get the tree viewer of the receiver.
protected void	init(int treeStyle, PatternFilter filter)	Create the filtered tree.
boolean	isShowFilterControls()
protected void	selectAll()	Select all text in the filter text field.
void	setBackground(Color background)	Set the background for the widgets that support the filter text area.
protected void	setFilterText(String string)	Set the text in the filter control.
void	setInitialText(String text)	Set the text that will be shown until the first focus.
void	setShowFilterControls(boolean showFilterControls)
protected void	textChanged()	Update the receiver after the text has changed.
protected void	updateToolbar(boolean visible)

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

changed, checkSubclass, drawBackground, getBackgroundMode, getChildren, getLayout, getLayoutDeferred, getTabList, isLayoutDeferred, layout, layout, layout, layout, layout, setBackgroundMode, setFocus, setLayout, setLayoutDeferred, setTabList, toString

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

computeTrim, getClientArea, getHorizontalBar, getScrollbarsMode, getVerticalBar

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

addControlListener, addDragDetectListener, addFocusListener, addGestureListener, addHelpListener, addKeyListener, addMenuDetectListener, addMouseListener, addMouseMoveListener, addMouseTrackListener, addMouseWheelListener, addPaintListener, addTouchListener, addTraverseListener, computeSize, computeSize, dragDetect, dragDetect, forceFocus, getAccessible, getBackground, getBackgroundImage, getBorderWidth, getBounds, getCursor, getDragDetect, getEnabled, getFont, getForeground, getLayoutData, getLocation, getMenu, getMonitor, getOrientation, getParent, getRegion, getShell, getSize, getTextDirection, getToolTipText, getTouchEnabled, getVisible, internal_dispose_GC, internal_new_GC, isEnabled, isFocusControl, isReparentable, isVisible, moveAbove, moveBelow, pack, pack, print, redraw, redraw, removeControlListener, removeDragDetectListener, removeFocusListener, removeGestureListener, removeHelpListener, removeKeyListener, removeMenuDetectListener, removeMouseListener, removeMouseMoveListener, removeMouseTrackListener, removeMouseWheelListener, removePaintListener, removeTouchListener, removeTraverseListener, requestLayout, setBackgroundImage, setBounds, setBounds, setCapture, setCursor, setDragDetect, setEnabled, setFont, setForeground, setLayoutData, setLocation, setLocation, setMenu, setOrientation, setParent, setRedraw, setRegion, setSize, setSize, setTextDirection, setToolTipText, setTouchEnabled, setVisible, toControl, toControl, toDisplay, toDisplay, traverse, traverse, traverse, update

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

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.swt.graphics.Drawable

isAutoScalable

Constructor Details

FilteredTree

public FilteredTree(Composite parent,
 int treeStyle,
 PatternFilter filter)

Create a new instance of the receiver.

Parameters:

parent - the parent Composite

treeStyle - the style bits for the Tree

filter - the filter to be used

FilteredTree

protected FilteredTree(Composite parent)

Create a new instance of the receiver. Subclasses that wish to override the default creation behavior may use this constructor, but must ensure that the init(composite, int, PatternFilter) method is called in the overriding constructor.

Parameters:

parent - the parent Composite

See Also:

• init(int, PatternFilter)

Method Details

init

protected void init(int treeStyle,
 PatternFilter filter)

Create the filtered tree.

Parameters:

treeStyle - the style bits for the Tree

filter - the filter to be used

Since:

3.3

createControl

protected void createControl(Composite parent,
 int treeStyle)

Create the filtered tree's controls. Subclasses should override.

createFilterControls

protected Composite createFilterControls(Composite parent)

Create the filter controls. By default, a text and corresponding tool bar button that clears the contents of the text is created. Subclasses may override.

Parameters:

parent - parent Composite of the filter controls

Returns:

the Composite that contains the filter controls

createTreeControl

protected Control createTreeControl(Composite parent,
 int style)

Creates and set up the tree and tree viewer. This method calls doCreateTreeViewer(Composite, int) to create the tree viewer. Subclasses should override doCreateTreeViewer(Composite, int) instead of overriding this method.

Parameters:

parent - parent Composite

style - SWT style bits used to create the tree

Returns:

the tree

doCreateTreeViewer

protected TreeViewer doCreateTreeViewer(Composite parent,
 int style)

Creates the tree viewer. Subclasses may override.

Parameters:

parent - the parent composite

style - SWT style bits used to create the tree viewer

Returns:

the tree viewer

Since:

3.3

doCreateRefreshJob

protected BasicUIJob doCreateRefreshJob()

Creates a workbench job that will refresh the tree based on the current filter text. Subclasses may override.

Returns:

a workbench job that can be scheduled to refresh the tree

Since:

3.4

updateToolbar

protected void updateToolbar(boolean visible)

createFilterText

protected void createFilterText(Composite parent)

Creates the filter text and adds listeners. This method calls doCreateFilterText(Composite) to create the text control. Subclasses should override doCreateFilterText(Composite) instead of overriding this method.

Parameters:

parent - Composite of the filter text

doCreateFilterText

protected Text doCreateFilterText(Composite parent)

Creates the text control for entering the filter text. Subclasses may override.

Parameters:

parent - the parent composite

Returns:

the text widget

Since:

3.3

textChanged

protected void textChanged()

Update the receiver after the text has changed.

getRefreshJobDelay

protected long getRefreshJobDelay()

Return the time delay that should be used when scheduling the filter refresh job. Subclasses may override.

Returns:

a time delay in milliseconds before the job should run

Since:

3.5

setBackground

public void setBackground(Color background)

Set the background for the widgets that support the filter text area.

Overrides:

setBackground in class Control

Parameters:

background - background Color to set

clearText

protected void clearText()

Clears the text in the filter text widget.

setFilterText

protected void setFilterText(String string)

Set the text in the filter control.

getPatternFilter

public final PatternFilter getPatternFilter()

Returns the pattern filter used by this tree.

Returns:

The pattern filter; never null.

getViewer

public TreeViewer getViewer()

Get the tree viewer of the receiver.

Returns:

the tree viewer

getFilterControl

public Text getFilterControl()

Get the filter text for the receiver, if it was created. Otherwise return null.

Returns:

the filter Text, or null if it was not created

getFilterString

protected String getFilterString()

Convenience method to return the text of the filter control. If the text widget is not created, then null is returned.

Returns:

String in the text, or null if the text does not exist

setInitialText

public void setInitialText(String text)

Set the text that will be shown until the first focus. A default value is provided, so this method only need be called if overriding the default initial text is desired.

Parameters:

text - initial text to appear in text field

selectAll

protected void selectAll()

Select all text in the filter text field.

getInitialText

protected String getInitialText()

Get the initial text for the receiver.

Returns:

String

getBoldFont

public static Font getBoldFont(Object element,
 FilteredTree tree,
 PatternFilter filter)

Return a bold font if the given element matches the given pattern. Clients can opt to call this method from a Viewer's label provider to get a bold font for which to highlight the given element in the tree.

Parameters:

element - element for which a match should be determined

tree - FilteredTree in which the element resides

filter - PatternFilter which determines a match

Returns:

bold font

isShowFilterControls

public boolean isShowFilterControls()

setShowFilterControls

public void setShowFilterControls(boolean showFilterControls)