/**
* Sets the receiver's text. The string may include the mnemonic character.
*
* <p>Mnemonics are indicated by an '&' that causes the next character to be the mnemonic.
* When the user presses a key sequence that matches the mnemonic, a selection event occurs. On
* most platforms, the mnemonic appears underlined but may be emphasised in a platform specific
* manner. The mnemonic indicator character '&' can be escaped by doubling it in the string,
* causing a single '&' to be displayed.
*
* @param string the new text
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the text is null
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setText(String string) {
checkWidget();
if (string == null) error(SWT.ERROR_NULL_ARGUMENT);
if ((style & SWT.SEPARATOR) != 0) return;
if (string.equals(text)) return;
super.setText(string);
long /*int*/ hwnd = parent.handle;
TBBUTTONINFO info = new TBBUTTONINFO();
info.cbSize = TBBUTTONINFO.sizeof;
info.dwMask = OS.TBIF_TEXT | OS.TBIF_STYLE;
info.fsStyle = (byte) (widgetStyle() | OS.BTNS_AUTOSIZE);
long /*int*/ hHeap = OS.GetProcessHeap(), pszText = 0;
if (string.length() != 0) {
info.fsStyle |= OS.BTNS_SHOWTEXT;
TCHAR buffer = new TCHAR(parent.getCodePage(), string, true);
int byteCount = buffer.length() * TCHAR.sizeof;
pszText = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, byteCount);
OS.MoveMemory(pszText, buffer, byteCount);
info.pszText = pszText;
}
OS.SendMessage(hwnd, OS.TB_SETBUTTONINFO, id, info);
if (pszText != 0) OS.HeapFree(hHeap, 0, pszText);
/*
* Bug in Windows. For some reason, when the font is set
* before any tool item has text, the tool items resize to
* a very small size. Also, a tool item will only show text
* when text has already been set on one item and then a new
* item is created. The fix is to use WM_SETFONT to force
* the tool bar to redraw and layout.
*/
parent.setDropDownItems(false);
long /*int*/ hFont = OS.SendMessage(hwnd, OS.WM_GETFONT, 0, 0);
OS.SendMessage(hwnd, OS.WM_SETFONT, hFont, 0);
parent.setDropDownItems(true);
parent.layoutItems();
}
/**
* Sets the control that is used to fill the bounds of the item when the item is a <code>SEPARATOR
* </code>.
*
* @param control the new control
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_ARGUMENT - if the control has been disposed
* <li>ERROR_INVALID_PARENT - if the control is not in the same widget tree
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setControl(Control control) {
checkWidget();
if (control != null) {
if (control.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
if (control.parent != parent) error(SWT.ERROR_INVALID_PARENT);
}
if ((style & SWT.SEPARATOR) == 0) return;
this.control = control;
/*
* Feature in Windows. When a tool bar wraps, tool items
* with the style BTNS_SEP are used as wrap points. This
* means that controls that are placed on top of separator
* items are not positioned properly. Also, vertical tool
* bars are implemented using TB_SETROWS to set the number
* of rows. When a control is placed on top of a separator,
* the height of the separator does not grow. The fix in
* both cases is to change the tool item style from BTNS_SEP
* to BTNS_BUTTON, causing the item to wrap like a tool item
* button. The new tool item button is disabled to avoid key
* traversal and the image is set to I_IMAGENONE to avoid
* getting the first image from the image list.
*/
if ((parent.style & (SWT.WRAP | SWT.VERTICAL)) != 0) {
boolean changed = false;
long /*int*/ hwnd = parent.handle;
TBBUTTONINFO info = new TBBUTTONINFO();
info.cbSize = TBBUTTONINFO.sizeof;
info.dwMask = OS.TBIF_STYLE | OS.TBIF_STATE;
OS.SendMessage(hwnd, OS.TB_GETBUTTONINFO, id, info);
if (control == null) {
if ((info.fsStyle & OS.BTNS_SEP) == 0) {
changed = true;
info.fsStyle &= ~(OS.BTNS_BUTTON | OS.BTNS_SHOWTEXT);
info.fsStyle |= OS.BTNS_SEP;
if ((state & DISABLED) != 0) {
info.fsState &= ~OS.TBSTATE_ENABLED;
} else {
info.fsState |= OS.TBSTATE_ENABLED;
}
}
} else {
if ((info.fsStyle & OS.BTNS_SEP) != 0) {
changed = true;
info.fsStyle &= ~OS.BTNS_SEP;
info.fsStyle |= OS.BTNS_BUTTON | OS.BTNS_SHOWTEXT;
info.fsState &= ~OS.TBSTATE_ENABLED;
info.dwMask |= OS.TBIF_IMAGE;
info.iImage = OS.I_IMAGENONE;
}
}
if (changed) {
OS.SendMessage(hwnd, OS.TB_SETBUTTONINFO, id, info);
/*
* Bug in Windows. When TB_SETBUTTONINFO changes the
* style of a tool item from BTNS_SEP to BTNS_BUTTON
* and the tool bar is wrapped, the tool bar does not
* redraw properly. Windows uses separator items as
* wrap points and sometimes draws etching above or
* below and entire row. The fix is to redraw the
* tool bar.
*/
if (OS.SendMessage(hwnd, OS.TB_GETROWS, 0, 0) > 1) {
OS.InvalidateRect(hwnd, null, true);
}
}
}
resizeControl();
}