/**
* 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(this.text)) return;
super.setText(string);
if (labelHandle == 0) return;
char[] chars = fixMnemonic(string);
byte[] buffer = Converter.wcsToMbcs(null, chars, true);
OS.gtk_label_set_text_with_mnemonic(labelHandle, buffer);
if ((style & SWT.DROP_DOWN) != 0 && OS.GTK_VERSION < OS.VERSION(2, 6, 0)) {
if (string.length() != 0) {
OS.gtk_widget_show(labelHandle);
} else {
OS.gtk_widget_hide(labelHandle);
}
}
/*
* If Text/Image of a tool-item changes, then it is
* required to reset the proxy menu. Otherwise, the
* old menuItem appears in the overflow menu.
*/
if ((style & SWT.DROP_DOWN) != 0) {
proxyMenuItem = 0;
proxyMenuItem = OS.gtk_tool_item_retrieve_proxy_menu_item(handle);
OS.g_signal_connect(
proxyMenuItem, OS.activate, ToolBar.menuItemSelectedFunc.getAddress(), handle);
}
parent.relayout();
}
public void setImage(Image image) {
checkWidget();
if ((style & SWT.SEPARATOR) != 0) return;
super.setImage(image);
if (image != null) {
ImageList imageList = parent.imageList;
if (imageList == null) imageList = parent.imageList = new ImageList();
int imageIndex = imageList.indexOf(image);
if (imageIndex == -1) {
imageIndex = imageList.add(image);
} else {
imageList.put(imageIndex, image);
}
long /*int*/ pixbuf = imageList.getPixbuf(imageIndex);
OS.gtk_image_set_from_pixbuf(imageHandle, pixbuf);
} else {
OS.gtk_image_set_from_pixbuf(imageHandle, 0);
}
/*
* If Text/Image of a tool-item changes, then it is
* required to reset the proxy menu. Otherwise, the
* old menuItem appears in the overflow menu.
*/
if ((style & SWT.DROP_DOWN) != 0) {
proxyMenuItem = 0;
proxyMenuItem = OS.gtk_tool_item_retrieve_proxy_menu_item(handle);
OS.g_signal_connect(
proxyMenuItem, OS.activate, ToolBar.menuItemSelectedFunc.getAddress(), handle);
}
parent.relayout();
}
/**
* Sets the receiver's tool tip text to the argument, which may be null indicating that the
* default tool tip for the control will be shown. For a control that has a default tool tip, such
* as the Tree control on Windows, setting the tool tip text to an empty string replaces the
* default, causing no tool tip text to be shown.
*
* <p>The mnemonic indicator (character '&') is not displayed in a tool tip. To display a
* single '&' in the tool tip, the character '&' can be escaped by doubling it in the
* string.
*
* @param string the new tool tip text (or null)
* @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 setToolTipText(String string) {
checkWidget();
if (parent.toolTipText == null) {
Shell shell = parent._getShell();
setToolTipText(shell, string);
}
toolTipText = string;
/*
* Since tooltip text of a tool-item is used in overflow
* menu when images are not shown, it is required to
* reset the proxy menu when the tooltip text changes.
* Otherwise, the old menuItem appears in the overflow
* menu as a blank item.
*/
if ((style & SWT.DROP_DOWN) != 0) {
proxyMenuItem = 0;
proxyMenuItem = OS.gtk_tool_item_retrieve_proxy_menu_item(handle);
OS.g_signal_connect(
proxyMenuItem, OS.activate, ToolBar.menuItemSelectedFunc.getAddress(), handle);
}
}
long /*int*/ gtk_create_menu_proxy(long /*int*/ widget) {
/*
* Feature in GTK. If the item is a radio/check button
* with only image, then that image does not appear in
* the overflow menu.
* The fix is to create and use the proxy menu for the
* items appearing in the overflow menu.
*/
byte[] buffer = Converter.wcsToMbcs(null, "menu-id", true); // $NON-NLS-1$
if (proxyMenuItem != 0) {
/*
* The menuItem to appear in the overflow menu is cached
* for the tool-item. If the text/image of the item changes,
* then the proxyMenu is reset.
*/
OS.gtk_tool_item_set_proxy_menu_item(widget, buffer, proxyMenuItem);
return 1;
}
if (image != null) {
ImageList imageList = parent.imageList;
if (imageList != null) {
int index = imageList.indexOf(image);
if (index != -1) {
long /*int*/ pixbuf = imageList.getPixbuf(index);
byte[] label = null;
int[] showImages = new int[] {1};
long /*int*/ settings = OS.gtk_settings_get_default();
if (settings != 0) {
long /*int*/ property =
OS.g_object_class_find_property(
OS.G_OBJECT_GET_CLASS(settings), OS.gtk_menu_images);
if (property != 0) OS.g_object_get(settings, OS.gtk_menu_images, showImages, 0);
}
/*
* GTK tool items with only image appear as blank items
* in overflow menu when the system property "gtk-menu-images"
* is set to false. To avoid that, display the tooltip text
* if available, in the overflow menu.
* Feature in GTK. When the menuItem is initialised only
* with the image, the overflow menu appears very sloppy.
* The fix is to initialise menu item with empty string.
*/
if (text == null || text.length() == 0) {
if ((showImages[0] == 0) && (toolTipText != null))
label = Converter.wcsToMbcs(null, toolTipText, true);
else label = new byte[] {0};
} else {
label = Converter.wcsToMbcs(null, text, true);
}
long /*int*/ menuItem = OS.gtk_image_menu_item_new_with_label(label);
long /*int*/ menuImage = OS.gtk_image_new_from_pixbuf(pixbuf);
OS.gtk_image_menu_item_set_image(menuItem, menuImage);
OS.gtk_tool_item_set_proxy_menu_item(widget, buffer, menuItem);
/*
* Since the arrow button does not appear in the drop_down
* item, we request the menu-item and then, hook the
* activate signal to send the Arrow selection signal.
*/
proxyMenuItem = OS.gtk_tool_item_get_proxy_menu_item(widget, buffer);
OS.g_signal_connect(
menuItem, OS.activate, ToolBar.menuItemSelectedFunc.getAddress(), handle);
return 1;
}
}
}
return 0;
}