package org.eclipse.swt.widgets;
/*
* (c) Copyright IBM Corp. 2000, 2001.
* All Rights Reserved
*/
import org.eclipse.swt.*;
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.gtk.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.events.*;
/**
* 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, Combo
s are used in the same place
* where a single selection List
widget could
* be used but space is limited. A Combo
takes
* less space than a List
widget and shows
* similar information.
*
* Note: Since Combo
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,
* clearSelection()
and deselectAll()
).
* 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.
*
* Note that although this class is a subclass of Composite
,
* it does not make sense to add children to it, or set a layout on it.
*
*
* - Styles:
* - DROP_DOWN, READ_ONLY, SIMPLE
* - Events:
* - DefaultSelection, Modify, Selection
*
*
* Note: Only one of the styles DROP_DOWN and SIMPLE
* may be specified.
*
* IMPORTANT: This class is not intended to be subclassed.
*
*
* @see List
*/
public class Combo extends Composite {
int entryHandle, listHandle;
int glist;
int textLimit = LIMIT;
public final static int LIMIT;
/*
* These values can be different on different platforms.
* Therefore they are not initialized in the declaration
* to stop the compiler from inlining.
*/
static {
LIMIT = 0xFFFF;
}
/**
* Constructs a new instance of this class given its parent
* and a style value describing its behavior and appearance.
*
* 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
* for all SWT widget classes should include a comment which
* describes the style constants which are applicable to the class.
*
*
* @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
* - ERROR_NULL_ARGUMENT - if the parent is null
*
* @exception 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 SWT
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public Combo (Composite parent, int style) {
super (parent, checkStyle (style));
}
/**
* Adds the argument to the end of the receiver's list.
*
* @param string the new item
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
* @exception SWTError
* - ERROR_ITEM_NOT_ADDED - if the operation fails because of an operating system failure
*
*
* @see #add(String,int)
*/
public void add (String string) {
checkWidget();
if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
String [] items = getItems ();
String [] newItems = new String [items.length + 1];
System.arraycopy (items, 0, newItems, 0, items.length);
newItems [items.length] = string;
setItems (newItems);
}
/**
* Adds the argument to the receiver's list at the given
* zero-relative index.
*
* Note: To add an item at the end of the list, use the
* result of calling getItemCount()
as the
* index or use add(String)
.
*
*
* @param string the new item
* @param index the index for the item
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
* - ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list (inclusive)
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
* @exception SWTError
* - ERROR_ITEM_NOT_ADDED - if the operation fails because of an operating system failure
*
*
* @see #add(String)
*/
public void add (String string, int index) {
checkWidget();
if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
if (!(0 <= index && index <= getItemCount ())) {
error (SWT.ERROR_ITEM_NOT_ADDED);
}
String [] items = getItems ();
String [] newItems = new String [items.length + 1];
System.arraycopy (items, 0, newItems, 0, items.length);
newItems [index] = string;
setItems (newItems);
}
/**
* 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 ModifyListener
* interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the listener is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see ModifyListener
* @see #removeModifyListener
*/
public void addModifyListener (ModifyListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Modify, typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the receiver's selection changes, by sending
* it one of the messages defined in the SelectionListener
* interface.
*
* widgetSelected
is called when the combo's list selection changes.
* widgetDefaultSelected
is typically called when ENTER is pressed the combo's text area.
*
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the listener is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see SelectionListener
* @see #removeSelectionListener
* @see SelectionEvent
*/
public void addSelectionListener(SelectionListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Selection,typedListener);
addListener (SWT.DefaultSelection,typedListener);
}
static int checkStyle (int style) {
/*
* Feature in Windows. It is not possible to create
* a combo box that has a border using Windows style
* bits. All combo boxes draw their own border and
* do not use the standard Windows border styles.
* Therefore, no matter what style bits are specified,
* clear the BORDER bits so that the SWT style will
* match the Windows widget.
*
* The Windows behavior is currently implemented on
* all platforms.
*/
style &= ~SWT.BORDER;
/*
* Even though it is legal to create this widget
* with scroll bars, they serve no useful purpose
* because they do not automatically scroll the
* widget's client area. The fix is to clear
* the SWT style.
*/
style &= ~(SWT.H_SCROLL | SWT.V_SCROLL);
style = checkBits (style, SWT.DROP_DOWN, SWT.SIMPLE, 0, 0, 0, 0);
if ((style & SWT.SIMPLE) != 0) return style & ~SWT.READ_ONLY;
return style;
}
/**
* 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.
*
* Note: To clear the selected items in the receiver's list,
* use deselectAll()
.
*
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see #deselectAll
*/
public void clearSelection () {
checkWidget();
/*int position = OS.gtk_editable_get_position (entryHandle);
OS.gtk_editable_set_position (entryHandle, position);*/
}
void createHandle (int index) {
state |= HANDLE;
fixedHandle = OS.gtk_fixed_new ();
if (fixedHandle == 0) error (SWT.ERROR_NO_HANDLES);
OS.gtk_fixed_set_has_window (fixedHandle, true);
handle = OS.gtk_combo_new ();
if (handle == 0) error (SWT.ERROR_NO_HANDLES);
GtkCombo combo = new GtkCombo ();
OS.memmove (combo, handle);
entryHandle = combo.entry;
listHandle = combo.list;
boolean editable = (style & SWT.READ_ONLY) == 0;
OS.gtk_entry_set_editable (entryHandle, editable);
int parentHandle = parent.parentingHandle ();
OS.gtk_container_add (parentHandle, fixedHandle);
OS.gtk_container_add (fixedHandle, handle);
OS.gtk_widget_show (fixedHandle);
OS.gtk_widget_show (handle);
}
GdkColor defaultBackground () {
Display display = getDisplay ();
return display.COLOR_TEXT_BACKGROUND;
}
GdkColor defaultForeground () {
Display display = getDisplay ();
return display.COLOR_TEXT_FOREGROUND;
}
void deregister () {
super.deregister ();
WidgetTable.remove (entryHandle);
WidgetTable.remove (listHandle);
}
int fontHandle () {
if (entryHandle != 0) return entryHandle;
return super.fontHandle ();
}
void hookEvents () {
// TO DO - expose, enter/exit, focus in/out
super.hookEvents ();
// TO DO - fix multiple selection events for one user action
signal_connect (listHandle, "select_child", SWT.Selection, 3);
signal_connect_after (entryHandle, "changed", SWT.Modify, 2);
signal_connect (entryHandle, "activate", SWT.DefaultSelection, 2);
int mask =
OS.GDK_POINTER_MOTION_MASK |
OS.GDK_BUTTON_PRESS_MASK | OS.GDK_BUTTON_RELEASE_MASK |
OS.GDK_KEY_PRESS_MASK | OS.GDK_KEY_RELEASE_MASK;
//FIXME - missing button handle
int [] handles = new int [] {entryHandle, listHandle, /*combo.button*/};
for (int i=0; i
* ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void deselect (int index) {
checkWidget();
setItems (getItems ());
}
/**
* Deselects all selected items in the receiver's list.
*
* Note: To clear the selection in the receiver's text field,
* use clearSelection()
.
*
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see #clearSelection
*/
public void deselectAll () {
checkWidget();
setItems (getItems ());
}
GdkColor getBackgroundColor () {
int fontHandle = fontHandle ();
GtkStyle style = new GtkStyle ();
OS.memmove(style, OS.gtk_widget_get_style (fontHandle));
GdkColor color = new GdkColor ();
color.pixel = style.base0_pixel;
color.red = style.base0_red;
color.green = style.base0_green;
color.blue = style.base0_blue;
return color;
}
GdkColor getForegroundColor () {
int fontHandle = fontHandle ();
GtkStyle style = new GtkStyle ();
OS.memmove(style, OS.gtk_widget_get_style (fontHandle));
GdkColor color = new GdkColor ();
color.pixel = style.text0_pixel;
color.red = style.text0_red;
color.green = style.text0_green;
color.blue = style.text0_blue;
return color;
}
/**
* 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
* - ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
* @exception SWTError
* - ERROR_CANNOT_GET_ITEM - if the operation fails because of an operating system failure
*
*/
public String getItem (int index) {
checkWidget();
String [] items = getItems ();
if (!(0 <= index && index < items.length)) {
error (SWT.ERROR_CANNOT_GET_ITEM);
}
return items [index];
}
/**
* Returns the number of items contained in the receiver's list.
*
* @return the number of items
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
* @exception SWTError
* - ERROR_CANNOT_GET_COUNT - if the operation fails because of an operating system failure
*
*/
public int getItemCount () {
checkWidget();
if (glist == 0) return 0;
return OS.g_list_length (glist);
}
/**
* Returns the height of the area which would be used to
* display one of the items in the receiver's list.
*
* @return the height of one item
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
* @exception SWTError
* - ERROR_CANNOT_GET_ITEM_HEIGHT - if the operation fails because of an operating system failure
*
*/
public int getItemHeight () {
checkWidget();
/* FIXME */
return 0;
}
/**
* Returns an array of String
s which are the items
* in the receiver's list.
*
* 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.
*
*
* @return the items in the receiver's list
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
* @exception SWTError
* - ERROR_CANNOT_GET_ITEM - if the operation fails because of an operating system failure
*
*/
public String [] getItems () {
checkWidget();
if (glist == 0) return new String [0];
int count = OS.g_list_length (glist);
String [] items = new String [count];
for (int i=0; iPoint whose x coordinate is the start
* of the selection in the receiver's text field, and whose y
* coordinate is the end of the selection. The returned values
* are zero-relative. An "empty" selection as indicated by
* the the x and y coordinates having the same value.
*
* @return a point representing the selection start and end
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public Point getSelection () {
checkWidget ();
int [] start = new int [1];
int [] end = new int [1];
OS.gtk_editable_get_selection_bounds (entryHandle, start, end);
return new Point(start [0], end [0]);
}
/**
* 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
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public int getSelectionIndex () {
checkWidget();
//NOT RIGHT FOR EDITABLE
return indexOf (getText ());
}
/**
* Returns a string containing a copy of the contents of the
* receiver's text field.
*
* @return the receiver's text
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public String getText () {
checkWidget();
/*
* The GTK documentation explicitly states
* that this address should not be freed.
*/
int address = OS.gtk_entry_get_text (entryHandle);
int length = OS.strlen (address);
byte [] buffer1 = new byte [length];
OS.memmove (buffer1, address, length);
char [] buffer2 = Converter.mbcsToWcs (null, buffer1);
return new String (buffer2, 0, buffer2.length);
}
String getText (int start, int stop) {
/*
* NOTE: The current implementation uses substring ()
* which can reference a potentially large character
* array.
*/
return getText ().substring (start, stop - 1);
}
/**
* Returns the height of the receivers's text field.
*
* @return the text height
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
* @exception SWTError
* - ERROR_CANNOT_GET_ITEM_HEIGHT - if the operation fails because of an operating system failure
*
*/
public int getTextHeight () {
checkWidget();
//FIXME
return 20;
}
/**
* Returns the maximum number of characters that the receiver's
* text field is capable of holding. If this has not been changed
* by setTextLimit()
, it will be the constant
* Combo.LIMIT
.
*
* @return the text limit
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public int getTextLimit () {
checkWidget();
return textLimit;
}
/**
* 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
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public int indexOf (String string) {
checkWidget();
return indexOf (string, 0);
}
/**
* 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
* @return the index of the item
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public int indexOf (String string, int start) {
checkWidget();
if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
String [] items = getItems ();
for (int i=start; i
* ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
* @exception SWTError
* - ERROR_ITEM_NOT_REMOVED - if the operation fails because of an operating system failure
*
*/
public void remove (int index) {
checkWidget();
if (!(0 <= index && index < getItemCount ())) {
error (SWT.ERROR_ITEM_NOT_REMOVED);
}
String [] oldItems = getItems ();
String [] newItems = new String [oldItems.length - 1];
System.arraycopy (oldItems, 0, newItems, 0, index);
System.arraycopy (oldItems, index + 1, newItems, index, oldItems.length - index - 1);
setItems (newItems);
}
/**
* 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
* - ERROR_INVALID_RANGE - if either the start or end are not between 0 and the number of elements in the list minus 1 (inclusive)
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
* @exception SWTError
* - ERROR_ITEM_NOT_REMOVED - if the operation fails because of an operating system failure
*
*/
public void remove (int start, int end) {
checkWidget();
if (!(0 <= start && start <= end && end < getItemCount ())) {
error (SWT.ERROR_ITEM_NOT_REMOVED);
}
String [] oldItems = getItems ();
String [] newItems = new String [oldItems.length - (end - start + 1)];
System.arraycopy (oldItems, 0, newItems, 0, start);
System.arraycopy (oldItems, end + 1, newItems, start, oldItems.length - end - 1);
setItems (newItems);
}
/**
* 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
* - ERROR_NULL_ARGUMENT - if the string is null
* - ERROR_INVALID_ARGUMENT - if the string is not found in the list
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
* @exception SWTError
* - ERROR_ITEM_NOT_REMOVED - if the operation fails because of an operating system failure
*
*/
public void remove (String string) {
checkWidget();
int index = indexOf (string, 0);
if (index != -1) remove (index);
}
/**
* Removes all of the items from the receiver's list.
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void removeAll () {
checkWidget();
setItems (new String [0]);
}
/**
* 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
* - ERROR_NULL_ARGUMENT - if the listener is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see ModifyListener
* @see #addModifyListener
*/
public void removeModifyListener (ModifyListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Modify, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the receiver's selection changes.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the listener is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see SelectionListener
* @see #addSelectionListener
*/
public void removeSelectionListener (SelectionListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Selection, listener);
eventTable.unhook (SWT.DefaultSelection,listener);
}
/**
* 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
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void select (int index) {
checkWidget();
String [] items = getItems ();
if (index >= items.length) return;
String selectedText = items [index];
OS.gtk_signal_handler_block_by_data (entryHandle, SWT.Modify);
OS.gtk_signal_handler_block_by_data (listHandle, SWT.Selection);
OS.gtk_list_select_item (listHandle, index);
OS.gtk_entry_set_text (entryHandle, Converter.wcsToMbcs (null, selectedText, true));
OS.gtk_signal_handler_unblock_by_data (entryHandle, SWT.Modify);
OS.gtk_signal_handler_unblock_by_data (listHandle, SWT.Selection);
}
void setBackgroundColor (GdkColor color) {
super.setBackgroundColor (color);
if (entryHandle != 0) OS.gtk_widget_modify_base (entryHandle, 0, color);
if (listHandle != 0) OS.gtk_widget_modify_base (listHandle, 0, color);
}
boolean setBounds (int x, int y, int width, int height, boolean move, boolean resize) {
checkWidget();
int newHeight = (resize && (style & SWT.DROP_DOWN) != 0) ? getTextHeight() : height;
return super.setBounds (x, y, width, newHeight, move, resize);
}
void setFontDescription (int font) {
super.setFontDescription (font);
if (entryHandle != 0) OS.gtk_widget_modify_font (entryHandle, font);
if (listHandle != 0) OS.gtk_widget_modify_font (listHandle, font);
}
void setForegroundColor (GdkColor color) {
super.setForegroundColor (color);
if (entryHandle != 0) OS.gtk_widget_modify_text (entryHandle, 0, color);
if (listHandle != 0) OS.gtk_widget_modify_text (listHandle, 0, color);
}
/**
* Sets the text of the item in the receiver's list at the given
* zero-relative index to the string argument. This is equivalent
* to remove
'ing the old item at the index, and then
* add
'ing the new item at that index.
*
* @param index the index for the item
* @param string the new text for the item
*
* @exception IllegalArgumentException
* - ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
* @exception SWTError
* - ERROR_ITEM_NOT_REMOVED - if the remove operation fails because of an operating system failure
* - ERROR_ITEM_NOT_ADDED - if the add operation fails because of an operating system failure
*
*/
public void setItem (int index, String string) {
checkWidget();
if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
if (!(0 <= index && index <= getItemCount ())) {
error (SWT.ERROR_INVALID_ARGUMENT);
}
String [] items = getItems ();
items [index] = string;
setItems (items);
}
/**
* Sets the receiver's list to be the given array of items.
*
* @param items the array of items
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
* @exception SWTError
* - ERROR_ITEM_NOT_ADDED - if the operation fails because of an operating system failure
*
*/
public void setItems (String [] items) {
checkWidget();
if (items == null) error (SWT.ERROR_NULL_ARGUMENT);
if (items.length == 0) {
OS.gtk_list_clear_items (listHandle, 0, -1);
//LEAK
glist = 0;
} else {
int new_glist = 0;
for (int i=0; i
* ERROR_NULL_ARGUMENT - if the point is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void setSelection (Point selection) {
checkWidget();
if (selection == null) error (SWT.ERROR_NULL_ARGUMENT);
OS.gtk_editable_set_position (entryHandle, selection.x);
OS.gtk_editable_select_region (entryHandle, selection.x, selection.y);
}
/**
* Sets the contents of the receiver's text field to the
* given string.
*
* Note: The text field in a Combo
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.
*
*
* @param text the new text
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the string is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void setText (String string) {
checkWidget();
if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
OS.gtk_editable_delete_text (entryHandle, 0, -1);
int [] position = new int [1];
byte [] buffer = Converter.wcsToMbcs (null, string);
OS.gtk_editable_insert_text (entryHandle, buffer, buffer.length, position);
OS.gtk_editable_set_position (entryHandle, 0);
}
/**
* Sets the maximum number of characters that the receiver's
* text field is capable of holding to be the argument.
*
* @param limit new text limit
*
* @exception IllegalArgumentException
* - ERROR_CANNOT_BE_ZERO - if the limit is zero
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void setTextLimit (int limit) {
checkWidget();
if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO);
this.textLimit = limit;
OS.gtk_entry_set_max_length (entryHandle, limit);
}
}