/*******************************************************************************
* Copyright (c) 2000, 2013 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.widgets;
import java.util.Arrays;
import java.util.LinkedList;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.event.EventHandler;
import javafx.scene.control.ComboBox;
import javafx.scene.input.KeyEvent;
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTException;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.events.VerifyEvent;
import org.eclipse.swt.events.VerifyListener;
import org.eclipse.swt.graphics.Point;
/**
* Instances of this class are controls that allow the user to choose an item
* from a list of items, or optionally enter a new value by typing it into an
* editable text field. Often, <code>Combo</code>s are used in the same place
* where a single selection <code>List</code> widget could be used but space is
* limited. A <code>Combo</code> takes less space than a <code>List</code>
* widget and shows similar information.
* <p>
* Note: Since <code>Combo</code>s can contain both a list and an editable text
* field, it is possible to confuse methods which access one versus the other
* (compare for example, <code>clearSelection()</code> and
* <code>deselectAll()</code>). The API documentation is careful to indicate
* either "the receiver's list" or the "the receiver's text field" to
* distinguish between the two cases.
* </p>
* <p>
* Note that although this class is a subclass of <code>Composite</code>, it
* does not make sense to add children to it, or set a layout on it.
* </p>
* <dl>
* <dt><b>Styles:</b></dt>
* <dd>DROP_DOWN, READ_ONLY, SIMPLE</dd>
* <dt><b>Events:</b></dt>
* <dd>DefaultSelection, Modify, Selection, Verify, OrientationChange</dd>
* </dl>
* <p>
* Note: Only one of the styles DROP_DOWN and SIMPLE may be specified.
* </p>
* <p>
* IMPORTANT: This class is <em>not</em> intended to be subclassed.
* </p>
*
* @see List
* @see <a href="http://www.eclipse.org/swt/snippets/#combo">Combo snippets</a>
* @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example:
* ControlExample</a>
* @see <a href="http://www.eclipse.org/swt/">Sample code and further
* information</a>
* @noextend This class is not intended to be subclassed by clients.
*/
public class Combo extends Composite {
/**
* the operating system limit for the number of characters
* that the text field in an instance of this class can hold
*/
public final static int LIMIT = 1000; // TODO
private LinkedList<SelectionListener> selectionListeners;
private LinkedList<VerifyListener> verifyListeners;
private LinkedList<ModifyListener> modifyListeners;
/**
* Constructs a new instance of this class given its parent and a style
* value describing its behavior and appearance.
* <p>
* The style value is either one of the style constants defined in class
* <code>SWT</code> which is applicable to instances of this class, or must
* be built by <em>bitwise OR</em>'ing together (that is, using the
* <code>int</code> "|" operator) two or more of those <code>SWT</code>
* style constants. The class description lists the style constants that are
* applicable to the class. Style bits are also inherited from superclasses.
* </p>
*
* @param parent
* a composite control which will be the parent of the new
* instance (cannot be null)
* @param style
* the style of control to construct
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the parent</li>
* <li>ERROR_INVALID_SUBCLASS - if this class is not an
* allowed subclass</li>
* </ul>
*
* @see SWT#DROP_DOWN
* @see SWT#READ_ONLY
* @see SWT#SIMPLE
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public Combo(Composite parent, int style) {
super(parent, style);
ComboBox<String> comboBox = new ComboBox<String>();
if ((style & SWT.READ_ONLY) !=0) comboBox.setEditable(false);
else comboBox.setEditable(true);
if ((style & SWT.SIMPLE)!=0) throw new IllegalArgumentException("SWT.SIMPLE NOT IMPLEMENTED YET");
comboBox.getSelectionModel().selectedItemProperty().addListener(new ChangeListener<String>() {
@Override
public void changed(ObservableValue<? extends String> arg0,
String arg1, String arg2) {
Event event = new Event();
event.widget = event.item = Combo.this;
SelectionEvent se = new SelectionEvent(event);
if (selectionListeners != null)
for (SelectionListener listener : selectionListeners)
listener.widgetSelected(se);
}
});
comboBox.getEditor().textProperty().addListener(new ChangeListener<String>() {
@Override
public void changed(ObservableValue<? extends String> arg0,
String arg1, String arg2) {
Event event = new Event();
event.widget = event.item = Combo.this;
ModifyEvent se = new ModifyEvent(event);
if (modifyListeners != null)
for (ModifyListener listener : modifyListeners)
listener.modifyText(se);
}
});
comboBox.getEditor().setOnKeyPressed(new EventHandler<KeyEvent>() {
@Override
public void handle(KeyEvent event) {
Event plainEvent = new Event();
plainEvent.widget = Combo.this;
plainEvent.item = Combo.this;
if (verifyListeners!=null)
for (VerifyListener listener : verifyListeners)
listener.verifyText(new VerifyEvent(plainEvent));
}
});
setNode(comboBox);
}
/**
* Adds the argument to the end of the receiver's list.
*
* @param string
* the new item
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the string is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @see #add(String,int)
*/
public void add(String string) {
add(string, getCombo().getItems().size());
}
/**
* Adds the argument to the receiver's list at the given zero-relative
* index.
* <p>
* Note: To add an item at the end of the list, use the result of calling
* <code>getItemCount()</code> as the index or use <code>add(String)</code>.
* </p>
*
* @param string
* the new item
* @param index
* the index for the item
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the string is null</li>
* <li>ERROR_INVALID_RANGE - if the index is not between 0
* and the number of elements in the list (inclusive)</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @see #add(String)
*/
public void add(String string, int index) {
getCombo().getItems().add(index, string);
}
/**
* Adds the listener to the collection of listeners who will be notified
* when the receiver's text is modified, by sending it one of the messages
* defined in the <code>ModifyListener</code> interface.
*
* @param listener
* the listener which should be notified
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @see ModifyListener
* @see #removeModifyListener
*/
public void addModifyListener(ModifyListener listener) {
if (modifyListeners == null)
modifyListeners = new LinkedList<>();
modifyListeners.add(listener);
}
/**
* Adds the listener to the collection of listeners who will be notified
* when the user changes the receiver's selection, by sending it one of the
* messages defined in the <code>SelectionListener</code> interface.
* <p>
* <code>widgetSelected</code> is called when the user changes the combo's
* list selection. <code>widgetDefaultSelected</code> is typically called
* when ENTER is pressed the combo's text area.
* </p>
*
* @param listener
* the listener which should be notified
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @see SelectionListener
* @see #removeSelectionListener
* @see SelectionEvent
*/
public void addSelectionListener(SelectionListener listener) {
if (selectionListeners == null)
selectionListeners = new LinkedList<>();
selectionListeners.add(listener);
}
/**
* Adds the listener to the collection of listeners who will be notified
* when the receiver's text is verified, by sending it one of the messages
* defined in the <code>VerifyListener</code> interface.
*
* @param listener
* the listener which should be notified
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @see VerifyListener
* @see #removeVerifyListener
*
* @since 3.1
*/
public void addVerifyListener(VerifyListener listener) {
if (verifyListeners == null)
verifyListeners = new LinkedList<>();
verifyListeners.add(listener);
}
/**
* Sets the selection in the receiver's text field to an empty selection
* starting just before the first character. If the text field is editable,
* this has the effect of placing the i-beam at the start of the text.
* <p>
* Note: To clear the selected items in the receiver's list, use
* <code>deselectAll()</code>.
* </p>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @see #deselectAll
*/
public void clearSelection() {
getCombo().getEditor().clear();
}
/**
* Copies the selected text.
* <p>
* The current selection is copied to the clipboard.
* </p>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @since 2.1
*/
public void copy() {
// TODO
}
/**
* Cuts the selected text.
* <p>
* The current selection is first copied to the clipboard and then deleted
* from the widget.
* </p>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @since 2.1
*/
public void cut() {
// TODO
}
/**
* Deselects the item at the given zero-relative index in the receiver's
* list. If the item at the index was already deselected, it remains
* deselected. Indices that are out of range are ignored.
*
* @param index
* the index of the item to deselect
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public void deselect(int index) {
getCombo().getSelectionModel().clearSelection(index);
}
/**
* Deselects all selected items in the receiver's list.
* <p>
* Note: To clear the selection in the receiver's text field, use
* <code>clearSelection()</code>.
* </p>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @see #clearSelection
*/
public void deselectAll() {
getCombo().getSelectionModel().clearSelection();
}
/**
* Returns a point describing the location of the caret relative to the
* receiver.
*
* @return a point, the location of the caret
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @since 3.8
*/
public Point getCaretLocation() {
return null;//TODO
}
/**
* Returns the character position of the caret.
* <p>
* Indexing is zero based.
* </p>
*
* @return the position of the caret
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @since 3.8
*/
public int getCaretPosition() {
return getCombo().getEditor().getCaretPosition();
}
/**
* Returns the item at the given, zero-relative index in the receiver's
* list. Throws an exception if the index is out of range.
*
* @param index
* the index of the item to return
* @return the item at the given index
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_RANGE - if the index is not between 0
* and the number of elements in the list minus 1 (inclusive)
* </li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public String getItem(int index) {
return getCombo().getItems().get(index);
}
/**
* Returns the number of items contained in the receiver's list.
*
* @return the number of items
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public int getItemCount() {
return getCombo().getItems().size();
}
/**
* Returns the height of the area which would be used to display
* <em>one</em> of the items in the receiver's list.
*
* @return the height of one item
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public int getItemHeight() {
// TODO
return 0;
}
/**
* Returns a (possibly empty) array of <code>String</code>s which are the
* items in the receiver's list.
* <p>
* 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.
* </p>
*
* @return the items in the receiver's list
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public String[] getItems() {
return (String[]) getCombo().getItems().toArray();
}
/**
* Returns <code>true</code> if the receiver's list is visible, and
* <code>false</code> otherwise.
* <p>
* If one of the receiver's ancestors is not visible or some other condition
* makes the receiver not visible, this method may still indicate that it is
* considered visible even though it may not actually be showing.
* </p>
*
* @return the receiver's list's visibility state
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @since 3.4
*/
public boolean getListVisible() {
// TODO
return false;
}
/**
* Returns a <code>Point</code> whose x coordinate is the character position
* representing the start of the selection in the receiver's text field, and
* whose y coordinate is the character position representing the end of the
* selection. An "empty" selection is indicated by the x and y coordinates
* having the same value.
* <p>
* Indexing is zero based. The range of a selection is from 0..N where N is
* the number of characters in the widget.
* </p>
*
* @return a point representing the selection start and end
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public Point getSelection() {
// TODO
return null;
}
/**
* Returns the zero-relative index of the item which is currently selected
* in the receiver's list, or -1 if no item is selected.
*
* @return the index of the selected item
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public int getSelectionIndex() {
return getCombo().getSelectionModel().getSelectedIndex();
}
/**
* Returns a string containing a copy of the contents of the receiver's text
* field, or an empty string if there are no contents.
*
* @return the receiver's text
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public String getText() {
String editableText = getCombo().getEditor().getText();
String ultimateEditableText = editableText==null?"":editableText;
String ultimateSelectedText = getCombo().getSelectionModel().getSelectedItem()==null?"":getCombo().getSelectionModel().getSelectedItem();
return getCombo().isEditable()?ultimateEditableText:ultimateSelectedText;
}
/**
* Returns the height of the receivers's text field.
*
* @return the text height
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public int getTextHeight() {
// TODO
return 0;
}
/**
* Returns the maximum number of characters that the receiver's text field
* is capable of holding. If this has not been changed by
* <code>setTextLimit()</code>, it will be the constant
* <code>Combo.LIMIT</code>.
*
* @return the text limit
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @see #LIMIT
*/
public int getTextLimit() {
return LIMIT;
}
/**
* Gets the number of items that are visible in the drop down portion of the
* receiver's list.
* <p>
* Note: This operation is a hint and is not supported on platforms that do
* not have this concept.
* </p>
*
* @return the number of items that are visible
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @since 3.0
*/
public int getVisibleItemCount() {
return getCombo().getVisibleRowCount();
}
/**
* 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.
*
* @param string
* the search item
* @return the index of the item
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the string is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public int indexOf(String string) {
return getCombo().getItems().indexOf(string);
}
/**
* Searches the receiver's list starting at the given, zero-relative index
* until an item is found that is equal to the argument, and returns the
* index of that item. If no item is found or the starting index is out of
* range, returns -1.
*
* @param string
* the search item
* @param start
* the zero-relative index at which to begin the search
* @return the index of the item
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the string is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public int indexOf(String string, int start) {
// TODO
return 0;
}
/**
* Pastes text from clipboard.
* <p>
* The selected text is deleted from the widget and new text inserted from
* the clipboard.
* </p>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @since 2.1
*/
public void paste() {
// TODO
}
/**
* Removes the item from the receiver's list at the given zero-relative
* index.
*
* @param index
* the index for the item
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_RANGE - if the index is not between 0
* and the number of elements in the list minus 1 (inclusive)
* </li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public void remove(int index) {
getCombo().getItems().remove(index);
}
/**
* Removes the items from the receiver's list which are between the given
* zero-relative start and end indices (inclusive).
*
* @param start
* the start of the range
* @param end
* the end of the range
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_RANGE - if either the start or end are
* not between 0 and the number of elements in the list minus
* 1 (inclusive)</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public void remove(int start, int end) {
getCombo().getItems().remove(start, end);
}
/**
* Searches the receiver's list starting at the first item until an item is
* found that is equal to the argument, and removes that item from the list.
*
* @param string
* the item to remove
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the string is null</li>
* <li>ERROR_INVALID_ARGUMENT - if the string is not found in
* the list</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public void remove(String string) {
getCombo().getItems().remove(string);
}
/**
* Removes all of the items from the receiver's list and clear the contents
* of receiver's text field.
* <p>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li> <li>ERROR_THREAD_INVALID_ACCESS - if not
* called from the thread that created the receiver</li>
* </ul>
*/
public void removeAll() {
getCombo().getItems().clear();
getCombo().getEditor().clear();
}
/**
* Removes the listener from the collection of listeners who will be
* notified when the receiver's text is modified.
*
* @param listener
* the listener which should no longer be notified
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @see ModifyListener
* @see #addModifyListener
*/
public void removeModifyListener(ModifyListener listener) {
if (modifyListeners != null) {
modifyListeners.remove(listener);
if (modifyListeners.isEmpty())
modifyListeners = null;
}
}
/**
* Removes the listener from the collection of listeners who will be
* notified when the user changes the receiver's selection.
*
* @param listener
* the listener which should no longer be notified
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @see SelectionListener
* @see #addSelectionListener
*/
public void removeSelectionListener(SelectionListener listener) {
if (selectionListeners != null) {
selectionListeners.remove(listener);
if (selectionListeners.isEmpty())
selectionListeners = null;
}
}
/**
* Removes the listener from the collection of listeners who will be
* notified when the control is verified.
*
* @param listener
* the listener which should no longer be notified
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @see VerifyListener
* @see #addVerifyListener
*
* @since 3.1
*/
public void removeVerifyListener(VerifyListener listener) {
if (verifyListeners != null) {
verifyListeners.remove(listener);
if (verifyListeners.isEmpty())
verifyListeners = null;
}
}
/**
* Selects the item at the given zero-relative index in the receiver's list.
* If the item at the index was already selected, it remains selected.
* Indices that are out of range are ignored.
*
* @param index
* the index of the item to select
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public void select(int index) {
getCombo().getSelectionModel().select(index);
}
/**
* Sets the text of the item in the receiver's list at the given
* zero-relative index to the string argument.
*
* @param index
* the index for the item
* @param string
* the new text for the item
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_RANGE - if the index is not between 0
* and the number of elements in the list minus 1 (inclusive)
* </li>
* <li>ERROR_NULL_ARGUMENT - if the string is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public void setItem(int index, String string) {
getCombo().getItems().set(index, string);
}
/**
* Sets the receiver's list to be the given array of items.
*
* @param items
* the array of items
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the items array is null</li>
* <li>ERROR_INVALID_ARGUMENT - if an item in the items array
* is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public void setItems(String[] items) {
getCombo().getItems().setAll(Arrays.asList(items));
}
/**
* Marks the receiver's list as visible if the argument is <code>true</code>
* , and marks it invisible otherwise.
* <p>
* If one of the receiver's ancestors is not visible or some other condition
* makes the receiver not visible, marking it visible may not actually cause
* it to be displayed.
* </p>
*
* @param visible
* the new visibility state
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @since 3.4
*/
public void setListVisible(boolean visible) {
// TODO
}
/**
* Sets the selection in the receiver's text field to the range specified by
* the argument whose x coordinate is the start of the selection and whose y
* coordinate is the end of the selection.
*
* @param selection
* a point representing the new selection start and end
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the point is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public void setSelection(Point selection) {
// TODO
}
/**
* Sets the contents of the receiver's text field to the given string.
* <p>
* This call is ignored when the receiver is read only and the given string
* is not in the receiver's list.
* </p>
* <p>
* Note: The text field in a <code>Combo</code> is typically only capable of
* displaying a single line of text. Thus, setting the text to a string
* containing line breaks or other special characters will probably cause it
* to display incorrectly.
* </p>
*
* @param string
* the new text
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the string is null</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*/
public void setText(String string) {
getCombo().getEditor().setText(string);
}
/**
* Sets the maximum number of characters that the receiver's text field is
* capable of holding to be the argument.
* <p>
* To reset this value to the default, use
* <code>setTextLimit(Combo.LIMIT)</code>. Specifying a limit value larger
* than <code>Combo.LIMIT</code> sets the receiver's limit to
* <code>Combo.LIMIT</code>.
* </p>
*
* @param limit
* new text limit
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_CANNOT_BE_ZERO - if the limit is zero</li>
* </ul>
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @see #LIMIT
*/
public void setTextLimit(int limit) {
//TODO
}
/**
* Sets the number of items that are visible in the drop down portion of the
* receiver's list.
* <p>
* Note: This operation is a hint and is not supported on platforms that do
* not have this concept.
* </p>
*
* @param count
* the new number of items to be visible
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been
* disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
* thread that created the receiver</li>
* </ul>
*
* @since 3.0
*/
public void setVisibleItemCount(int count) {
getCombo().setVisibleRowCount(count);
}
@SuppressWarnings("unchecked")
ComboBox<String> getCombo(){
return (ComboBox<String>) node;
}
}