package org.eclipse.swt.widgets;
/*
* (c) Copyright IBM Corp. 2000, 2001, 2002.
* All Rights Reserved
*/
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.photon.*;
import org.eclipse.swt.*;
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 {
/**
* 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
* lists the style constants that are applicable to the class.
* Style bits are also inherited from superclasses.
*
*
* @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#DROP_DOWN
* @see SWT#READ_ONLY
* @see SWT#SIMPLE
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public Combo (Composite parent, int style) {
super (parent, checkStyle (style));
}
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;
}
public Point computeSize (int wHint, int hHint, boolean changed) {
checkWidget();
//NOT DONE: this only works with a DROP_DOWN combo
if ((style & SWT.SIMPLE) != 0) return new Point(100, 100);
PhDim_t dim = new PhDim_t();
if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidgetFamily (handle);
OS.PtWidgetPreferredSize(handle, dim);
int width = dim.w;
int height = dim.h;
int textWidget = OS.PtWidgetChildBack(handle);
OS.PtWidgetPreferredSize(textWidget, dim);
height += dim.h;
PhRect_t rect = new PhRect_t ();
PhArea_t area = new PhArea_t ();
OS.PtSetAreaFromWidgetCanvas (textWidget, rect, area);
width += area.size_w;
/* Calculate maximum text width */
int [] args = new int [] {
OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0,
OS.Pt_ARG_ITEMS, 0, 0,
OS.Pt_ARG_TEXT_FONT, 0, 0,
OS.Pt_ARG_TEXT_STRING, 0, 0,
};
OS.PtGetResources (handle, args.length / 3, args);
int maxWidth = 0;
rect = new PhRect_t();
int str = args [10];
int font = args [7];
if (str != 0) {
int length = OS.strlen (str);
if (length > 0) {
OS.PfExtentText(rect, null, font, str, length);
maxWidth = Math.max(maxWidth, rect.lr_x - rect.ul_x + 1);
}
}
int count = args [1];
int [] buffer = new int [1];
for (int i = 0; i < count; i++) {
OS.memmove (buffer, args [4] + (i * 4), 4);
str = buffer [0];
int length = OS.strlen (str);
if (length > 0) {
OS.PfExtentText(rect, null, font, str, length);
maxWidth = Math.max(maxWidth, rect.lr_x - rect.ul_x + 1);
}
}
if (maxWidth == 0) maxWidth = DEFAULT_WIDTH;
width += maxWidth;
if (wHint != SWT.DEFAULT || hHint != SWT.DEFAULT) {
rect = new PhRect_t ();
area = new PhArea_t ();
rect.lr_x = (short) (wHint - 1);
rect.lr_y = (short) (hHint - 1);
OS.PtSetAreaFromWidgetCanvas (handle, rect, area);
if (wHint != SWT.DEFAULT) width = area.size_w;
if (hHint != SWT.DEFAULT) height = area.size_h;
}
return new Point(width, height);
}
void createHandle (int index) {
state |= HANDLE;
Display display = getDisplay ();
int clazz = display.PtComboBox;
int parentHandle = parent.parentingHandle ();
int textFlags = (style & SWT.READ_ONLY) != 0 ? 0 : OS.Pt_EDITABLE;
int [] args = {
OS.Pt_ARG_TEXT_FLAGS, textFlags, OS.Pt_EDITABLE,
OS.Pt_ARG_CBOX_MAX_VISIBLE_COUNT, 5, 0,
OS.Pt_ARG_CBOX_FLAGS, (style & SWT.SIMPLE) != 0 ? OS.Pt_COMBOBOX_STATIC: 0, OS.Pt_COMBOBOX_STATIC,
OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS,
};
handle = OS.PtCreateWidget (clazz, parentHandle, args.length / 3, args);
if (handle == 0) error (SWT.ERROR_NO_HANDLES);
}
/**
* 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
* - 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();
int [] args = new int [] {OS.Pt_ARG_CBOX_SELECTION_ITEM, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
if (args [1] == index) {
args = new int [] {
OS.Pt_ARG_TEXT_STRING, 0, 0,
OS.Pt_ARG_CBOX_SELECTION_ITEM, 0, 0
};
OS.PtSetResources (handle, args.length / 3, args);
}
}
/**
* 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();
int [] args = new int [] {
OS.Pt_ARG_TEXT_STRING, 0, 0,
OS.Pt_ARG_CBOX_SELECTION_ITEM, 0, 0
};
OS.PtSetResources (handle, args.length / 3, args);
}
/**
* 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);
byte [] buffer = Converter.wcsToMbcs (null, string, true);
int ptr = OS.malloc (buffer.length);
OS.memmove (ptr, buffer, buffer.length);
OS.PtListAddItems (handle, new int [] {ptr}, 1, 0);
OS.free (ptr);
}
/**
* 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 (index == -1) error (SWT.ERROR_INVALID_RANGE);
byte [] buffer = Converter.wcsToMbcs (null, string, true);
int ptr = OS.malloc (buffer.length);
OS.memmove (ptr, buffer, buffer.length);
int result = OS.PtListAddItems (handle, new int [] {ptr}, 1, index + 1);
OS.free (ptr);
if (result != 0) {
int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
if (0 <= index && index <= args [1]) error (SWT.ERROR_ITEM_NOT_ADDED);
error (SWT.ERROR_INVALID_RANGE);
}
}
/**
* 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);
}
protected void checkSubclass () {
if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
}
/**
* 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();
OS.PtTextSetSelection (handle, new int [] {0}, new int [] {0});
}
void deregister () {
super.deregister ();
int child = OS.PtWidgetChildBack (handle);
WidgetTable.remove (child);
}
int focusHandle () {
/*
* Fetuare in Photon. The combo box does not receive
* Pt_CB_GOT_FOCUS and Pt_CB_LOST_FOCUS callbacks itself.
* Only the internal PtText receives them. The fix is to
* add these callbacks in the internal PtText.
*/
return OS.PtWidgetChildBack (handle);
}
/**
* 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();
int [] args = new int [] {
OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0,
OS.Pt_ARG_ITEMS, 0, 0,
};
OS.PtGetResources (handle, args.length / 3, args);
if (!(0 <= index && index < args [1])) {
error (SWT.ERROR_INVALID_RANGE);
}
int [] items = new int [1];
OS.memmove (items, args [4] + (index * 4), 4);
int length = OS.strlen (items [0]);
byte [] buffer = new byte [length];
OS.memmove (buffer, items [0], length);
char [] unicode = Converter.mbcsToWcs (null, buffer);
return new String (unicode);
}
/**
* 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();
int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return args [1];
}
/**
* 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();
//NOT DONE - NOT NEEDED
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();
int [] args = new int [] {
OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0,
OS.Pt_ARG_ITEMS, 0, 0,
};
OS.PtGetResources (handle, args.length / 3, args);
int [] items = new int [args [1]];
OS.memmove (items, args [4], args [1] * 4);
String [] result = new String [args [1]];
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();
if (((style & SWT.DROP_DOWN) != 0) && ((style & SWT.READ_ONLY) != 0)) {
int [] args = {OS.Pt_ARG_TEXT_STRING, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
int length = 0;
if (args [1] != 0) length = OS.strlen (args [1]);
return new Point (0, length);
}
// if (textVerify != null) {
// return new Point (textVerify.start_pos, textVerify.end_pos);
// }
int [] start = new int [1], end = new int [1];
OS.PtTextGetSelection (handle, start, end);
if (start [0] == -1) {
int [] args = {OS.Pt_ARG_CURSOR_POSITION, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
start [0] = end [0] = args [1];
}
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();
int [] args = new int [] {
OS.Pt_ARG_LIST_SEL_COUNT, 0, 0,
OS.Pt_ARG_SELECTION_INDEXES, 0, 0,
};
OS.PtGetResources (handle, args.length / 3, args);
if (args [1] == 0) return -1;
short [] buffer = new short [1];
OS.memmove (buffer, args [4], 2);
return buffer [0] - 1;
}
/**
* 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();
int [] args = {OS.Pt_ARG_TEXT_STRING, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
if (args [1] == 0) return "";
int length = OS.strlen (args [1]);
byte [] buffer = new byte [length];
OS.memmove (buffer, args [1], length);
char [] unicode = Converter.mbcsToWcs (null, buffer);
return new String (unicode);
}
/**
* 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();
//NOT DONE - Only works for DROP_DOWN
PhDim_t dim = new PhDim_t();
if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidgetFamily (handle);
OS.PtWidgetPreferredSize(handle, dim);
int height = dim.h;
int text = OS.PtWidgetChildBack(handle);
OS.PtWidgetPreferredSize(text, dim);
height += dim.h;
return height;
}
/**
* 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();
int [] args = new int [] {OS.Pt_ARG_MAX_LENGTH, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return args [1];
}
boolean hasFocus () {
return OS.PtIsFocused (handle) != 0;
}
void hookEvents () {
super.hookEvents ();
int windowProc = getDisplay ().windowProc;
OS.PtAddCallback (handle, OS.Pt_CB_SELECTION, windowProc, SWT.Selection);
OS.PtAddCallback (handle, OS.Pt_CB_TEXT_CHANGED, windowProc, SWT.Modify);
}
/**
* 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();
byte [] buffer = Converter.wcsToMbcs (null, string, true);
return OS.PtListItemPos(handle, buffer) - 1;
}
/**
* 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);
// NOT DONE - start is ignored
return indexOf (string);
}
int processModify (int info) {
sendEvent (SWT.Modify);
return OS.Pt_CONTINUE;
}
int processPaint (int damage) {
OS.PtSuperClassDraw (OS.PtComboBox (), handle, damage);
sendPaintEvent (damage);
return OS.Pt_CONTINUE;
}
int processSelection (int info) {
if (info == 0) return OS.Pt_CONTINUE;
PtCallbackInfo_t cbinfo = new PtCallbackInfo_t ();
OS.memmove (cbinfo, info, PtCallbackInfo_t.sizeof);
if (cbinfo.reason_subtype == OS.Pt_LIST_SELECTION_FINAL) {
postEvent(SWT.Selection);
}
return OS.Pt_CONTINUE;
}
void register () {
super.register ();
int child = OS.PtWidgetChildBack (handle);
WidgetTable.put (child, this);
}
/**
* 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();
int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
if (!(0 < start && start <= end && end < args [1])) {
error (SWT.ERROR_INVALID_RANGE);
}
int count = end - start + 1;
int result = OS.PtListDeleteItemPos (handle, count, start + 1);
if (result != 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
}
/**
* Removes the item from the receiver's list at the given
* zero-relative index.
*
* @param index the index 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 operation fails because of an operating system failure
*
*/
public void remove (int index) {
checkWidget();
int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
if (!(0 <= index && index < args [1])) error (SWT.ERROR_INVALID_RANGE);
int result = OS.PtListDeleteItemPos (handle, 1, index + 1);
if (result != 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
}
/**
* 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) error (SWT.ERROR_ITEM_NOT_REMOVED);
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();
OS.PtListDeleteAllItems (handle);
}
/**
* 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();
if (index < 0) return;
OS.PtSetResource (handle, OS.Pt_ARG_CBOX_SELECTION_ITEM, index + 1, 0);
}
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);
}
/**
* 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);
int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
if (!(0 <= index && index < args [1])) {
error (SWT.ERROR_INVALID_RANGE);
}
byte [] buffer = Converter.wcsToMbcs (null, string, true);
int ptr = OS.malloc (buffer.length);
OS.memmove (ptr, buffer, buffer.length);
OS.PtListReplaceItemPos (handle, new int [] {ptr}, 1, index + 1);
OS.free (ptr);
}
/**
* 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);
OS.PtListDeleteAllItems (handle);
int[] itemsPtr = new int [items.length];
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.PtTextSetSelection (handle, new int [] {selection.x}, new int [] {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);
byte [] buffer = Converter.wcsToMbcs (null, string, true);
if ((style & SWT.READ_ONLY) != 0) {
int index = OS.PtListItemPos(handle, buffer);
if (index > 0) {
OS.PtSetResource (handle, OS.Pt_ARG_CBOX_SELECTION_ITEM, index, 0);
// sendEvent (SWT.Modify);
}
return;
}
int ptr = OS.malloc (buffer.length);
OS.memmove (ptr, buffer, buffer.length);
OS.PtSetResource (handle, OS.Pt_ARG_TEXT_STRING, ptr, 0);
OS.free (ptr);
}
/**
* 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);
OS.PtSetResource (handle, OS.Pt_ARG_MAX_LENGTH, limit, 0);
}
int traversalCode (int key_sym, PhKeyEvent_t ke) {
int code = super.traversalCode (key_sym, ke);
if (key_sym == OS.Pk_Up || key_sym == OS.Pk_Down) {
code &= ~(SWT.TRAVERSE_ARROW_NEXT | SWT.TRAVERSE_ARROW_PREVIOUS);
}
if ((style & SWT.READ_ONLY) == 0) {
if (key_sym == OS.Pk_Up || key_sym == OS.Pk_Down) {
code &= ~(SWT.TRAVERSE_ARROW_NEXT | SWT.TRAVERSE_ARROW_PREVIOUS);
}
}
return code;
}
boolean translateTraversal (int key_sym, PhKeyEvent_t phEvent) {
boolean translated = super.translateTraversal (key_sym, phEvent);
if (!translated && key_sym == OS.Pk_Return) {
postEvent (SWT.DefaultSelection);
return false;
}
return translated;
}
}