/** * Sets the receiver's text. * * <p>The string can contain both regular text and hyperlinks. A hyperlink is delimited by an * anchor tag, <A> and </A>. Within an anchor, a single HREF attribute is supported. * When a hyperlink is selected, the text field of the selection event contains either the text of * the hyperlink or the value of its HREF, if one was specified. In the rare case of identical * hyperlinks within the same string, the HREF attribute can be used to distinguish between them. * The string may include the mnemonic character and line delimiters. The only delimiter the HREF * attribute supports is the quotation mark ("). * * <p>Mnemonics are indicated by an '&' that causes the next character to be the mnemonic. The * receiver can have a mnemonic in the text preceding each link. When the user presses a key * sequence that matches the mnemonic, focus is assigned to the link that follows the text. * Mnemonics in links and in the trailing text are ignored. 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 (string.equals(text)) return; text = string; layout.setText(parse(string)); focusIndex = offsets.length > 0 ? 0 : -1; selection.x = selection.y = -1; boolean enabled = (state & DISABLED) == 0; TextStyle linkStyle = new TextStyle(null, enabled ? linkColor : disabledColor, null); linkStyle.underline = true; int[] bidiSegments = new int[offsets.length * 2]; for (int i = 0; i < offsets.length; i++) { Point point = offsets[i]; layout.setStyle(linkStyle, point.x, point.y); bidiSegments[i * 2] = point.x; bidiSegments[i * 2 + 1] = point.y + 1; } layout.setSegments(bidiSegments); TextStyle mnemonicStyle = new TextStyle(null, null, null); mnemonicStyle.underline = true; for (int i = 0; i < mnemonics.length; i++) { int mnemonic = mnemonics[i]; if (mnemonic != -1) { layout.setStyle(mnemonicStyle, mnemonic, mnemonic); } } redraw(); }