/**
* Sets the maximum number of characters that the receiver is capable of holding to be the
* argument.
*
* <p>Instead of trying to set the text limit to zero, consider creating a read-only text widget.
*
* <p>To reset this value to the default, use <code>setTextLimit(Text.LIMIT)</code>. Specifying a
* limit value larger than <code>Text.LIMIT</code> sets the receiver's limit to <code>Text.LIMIT
* </code>.
*
* @param limit new text limit
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_CANNOT_BE_ZERO - if the limit is zero
* </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>
*
* @see #LIMIT
*/
public void setTextLimit(int limit) {
checkWidget();
if (limit == 0) {
error(SWT.ERROR_CANNOT_BE_ZERO);
}
if (limit < 0 || limit > LIMIT) {
limit = LIMIT;
}
if (variant == TextUtils.LINE_EDIT) {
OS.QLineEdit_setMaxLength(topHandle, limit);
} else {
textLimit = limit;
if (getCharCount() > limit) {
OS.QTextEdit_setPlainText(topHandle, getText().substring(0, limit));
}
}
}
void createHandle_pp(int index) {
if (variant == 0) {
variant = ((getStyle() & SWT.SINGLE) != 0 ? TextUtils.LINE_EDIT : TextUtils.TEXT_EDIT);
}
int alignment = OS.QT_ALIGNLEFT;
if ((style & SWT.CENTER) != 0) {
alignment = OS.QT_ALIGNHCENTER;
} else if ((style & SWT.RIGHT) != 0) {
alignment = OS.QT_ALIGNRIGHT;
}
if (variant == TextUtils.LINE_EDIT) {
scrollAreaHandle = 0;
topHandle = handle = OS.QLineEdit_new();
OS.QLineEdit_setAlignment(handle, alignment | OS.QT_ALIGNVCENTER);
OS.QLineEdit_setMaxLength(handle, LIMIT);
if ((style & SWT.PASSWORD) != 0) {
OS.QLineEdit_setEchoMode(handle, OS.QLINEEDIT_ECHOMODE_PASSWORD);
}
} else {
frameHandle = topHandle = scrollAreaHandle = OS.QTextEdit_new();
handle = OS.QAbstractScrollArea_viewPort(scrollAreaHandle);
OS.QTextEdit_setAlignment(scrollAreaHandle, alignment);
forceTextLayout();
}
OS.QWidget_setGeometry(topHandle, 0, 0, 0, 0);
state |= WidgetState.HANDLE;
if ((style & SWT.READ_ONLY) != 0) {
setEditable(false);
}
}
