/**
* Creates an instance of a ControlExample embedded inside the supplied parent Composite.
*
* @param parent the container of the example
*/
public ControlExample(Composite parent) {
initResources();
tabFolder = new TabFolder(parent, SWT.NONE);
tabs = createTabs();
for (Tab tab : tabs) {
TabItem item = new TabItem(tabFolder, SWT.NONE);
item.setText(tab.getTabText());
item.setControl(tab.createTabFolderPage(tabFolder));
item.setData(tab);
}
/* Workaround: if the tab folder is wider than the screen,
* Mac platforms clip instead of somehow scrolling the tab items.
* We try to recover some width by using shorter tab names. */
Point size = parent.computeSize(SWT.DEFAULT, SWT.DEFAULT);
Rectangle monitorArea = parent.getMonitor().getClientArea();
boolean isMac = SWT.getPlatform().equals("cocoa");
if (size.x > monitorArea.width && isMac) {
TabItem[] tabItems = tabFolder.getItems();
for (int i = 0; i < tabItems.length; i++) {
tabItems[i].setText(tabs[i].getShortTabText());
}
}
startup = false;
}
void removeControl(Control control) {
super.removeControl(control);
int count = getItemCount();
for (int i = 0; i < count; i++) {
TabItem item = items[i];
if (item.control == control) item.setControl(null);
}
}
public static void labelTab() {
TabItem tab = new TabItem(folder, SWT.CLOSE);
tab.setText("A Label"); // Text on the tab
tab.setToolTipText("A simple label");
Label label = new Label(folder, SWT.CENTER);
label.setText("Label text");
tab.setControl(label);
}
public static void scribbleTab() {
TabItem tab = new TabItem(folder, SWT.CLOSE);
tab.setText("Scribble");
tab.setToolTipText("Simple graphics: drawing");
final Canvas canvas = new Canvas(folder, SWT.NONE);
ScribbleMouseListener sml = new ScribbleMouseListener();
canvas.addMouseListener(sml);
canvas.addMouseMoveListener(sml);
tab.setControl(canvas);
}
void releaseChildren(boolean destroy) {
if (items != null) {
for (int i = 0; i < items.length; i++) {
TabItem item = items[i];
if (item != null && !item.isDisposed()) {
item.release(false);
}
}
items = null;
}
super.releaseChildren(destroy);
}
/**
* Returns a rectangle describing the receiver's size and location relative to its parent.
*
* @return the receiver's bounding rectangle
* @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>
*
* @since 1.3
*/
public Rectangle getBounds() {
checkWidget();
Rectangle result = new Rectangle(0, 0, 0, 0);
int index = parent.indexOf(this);
if (index != -1) {
int selectionIndex = parent.getSelectionIndex();
boolean selected = index == selectionIndex;
Rectangle padding = parent.getItemPadding(selected);
String text = getText();
if (text != null) {
Point extent = Graphics.stringExtent(parent.getFont(), text);
result.width = extent.x;
result.height = extent.y;
}
Image image = getImage();
if (image != null) {
Rectangle imageSize = image.getBounds();
result.width += imageSize.width + IMAGE_TEXT_SPACING;
result.height = Math.max(result.height, imageSize.height);
}
result.width += 2 * ITEM_BORDER + padding.width;
result.height += ITEM_BORDER + padding.height;
if (selected) {
result.height += SELECTED_ITEM_BORDER;
}
if (selectionIndex != -1) {
if (index + 1 == selectionIndex || index - 1 == selectionIndex) {
result.width -= ITEM_BORDER;
}
}
if (isBarTop()) {
if (index != selectionIndex) {
result.y += SELECTED_ITEM_BORDER;
}
} else {
result.y = parent.getBounds().height - 2 * parent.getBorderWidth() - result.height;
if (index != selectionIndex) {
result.y -= SELECTED_ITEM_BORDER;
}
}
if (index > 0) {
TabItem leftItem = parent.getItem(index - 1);
Rectangle leftItemBounds = leftItem.getBounds();
result.x = leftItemBounds.x + leftItemBounds.width + TABS_SPACING;
if (index == selectionIndex || index - 1 == selectionIndex) {
result.x -= TABS_SPACING;
}
}
}
return result;
}
void reskinChildren(int flags) {
if (items != null) {
long /*int*/ list = OS.gtk_container_get_children(handle);
if (list != 0) {
int count = OS.g_list_length(list);
OS.g_list_free(list);
for (int i = 0; i < count; i++) {
TabItem item = items[i];
if (item != null) item.reskin(flags);
}
}
}
super.reskinChildren(flags);
}
/**
* Returns the tab item at the given point in the receiver or null if no such item exists. The
* point is in the coordinate system of the receiver.
*
* @param point the point used to locate the item
* @return the tab item at the given point, or null if the point is not in a tab item
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the point 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>
*
* @since 3.4
*/
public TabItem getItem(Point point) {
checkWidget();
if (point == null) error(SWT.ERROR_NULL_ARGUMENT);
long /*int*/ list = OS.gtk_container_get_children(handle);
if (list == 0) return null;
int itemCount = OS.g_list_length(list);
OS.g_list_free(list);
for (int i = 0; i < itemCount; i++) {
TabItem item = items[i];
Rectangle rect = item.getBounds();
if (rect.contains(point)) return item;
}
return null;
}
public static void sliderTab() {
TabItem tab = new TabItem(folder, SWT.CLOSE);
tab.setText("Sliders and Progress bars");
tab.setToolTipText("Tied Slider to ProgressBar");
Composite composite = new Composite(folder, SWT.NONE);
composite.setLayout(new GridLayout(2, true));
final Slider slider = new Slider(composite, SWT.HORIZONTAL);
final ProgressBar progress = new ProgressBar(composite, SWT.HORIZONTAL);
slider.addSelectionListener(
new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
progress.setSelection(slider.getSelection());
}
});
tab.setControl(composite);
}
public static void buttonTab() {
TabItem tab = new TabItem(folder, SWT.CLOSE);
tab.setText("Buttons");
tab.setToolTipText("Different kinds of Buttons");
Composite composite = new Composite(folder, SWT.NONE);
composite.setLayout(new GridLayout(4, true));
for (int dir : new int[] {SWT.UP, SWT.RIGHT, SWT.LEFT, SWT.DOWN}) {
Button b = new Button(composite, SWT.ARROW | dir);
b.addListener(SWT.MouseDown, listener);
}
newButton(composite, SWT.CHECK, "Check button");
newButton(composite, SWT.PUSH, "Push button");
newButton(composite, SWT.RADIO, "Radio button");
newButton(composite, SWT.TOGGLE, "Toggle button");
newButton(composite, SWT.FLAT, "Flat button");
tab.setControl(composite);
}
public static void directoryDialogTab() {
TabItem tab = new TabItem(folder, SWT.CLOSE);
tab.setText("Directory Dialog");
tab.setToolTipText("Select a directory");
final Button b = new Button(folder, SWT.PUSH);
b.setText("Select a Directory");
b.addListener(
SWT.MouseDown,
new Listener() {
public void handleEvent(Event e) {
DirectoryDialog dd = new DirectoryDialog(shell);
String path = dd.open();
if (path != null) b.setText(path);
}
});
tab.setControl(b);
}
public static void browserTab() {
TabItem tab = new TabItem(folder, SWT.CLOSE);
tab.setText("A Browser");
tab.setToolTipText("A Web browser");
Browser browser = null;
try {
browser = new Browser(folder, SWT.NONE);
} catch (SWTError e) {
Label label = new Label(folder, SWT.BORDER);
label.setText("Could not initialize browser");
tab.setControl(label);
}
if (browser != null) {
browser.setUrl("http://www.mindview.net");
tab.setControl(browser);
}
}
long /*int*/ gtk_switch_page(long /*int*/ widget, long /*int*/ page, long /*int*/ page_num) {
int index = OS.gtk_notebook_get_current_page(handle);
if (index != -1) {
Control control = items[index].getControl();
if (control != null && !control.isDisposed()) {
control.setVisible(false);
}
}
TabItem item = items[(int) /*64*/ page_num];
Control control = item.getControl();
if (control != null && !control.isDisposed()) {
control.setBounds(getClientArea());
control.setVisible(true);
}
Event event = new Event();
event.item = item;
sendSelectionEvent(SWT.Selection, event, false);
return 0;
}
void createItem(TabItem item, int index) {
long /*int*/ list = OS.gtk_container_get_children(handle);
int itemCount = 0;
if (list != 0) {
itemCount = OS.g_list_length(list);
OS.g_list_free(list);
}
if (!(0 <= index && index <= itemCount)) error(SWT.ERROR_INVALID_RANGE);
if (itemCount == items.length) {
TabItem[] newItems = new TabItem[items.length + 4];
System.arraycopy(items, 0, newItems, 0, items.length);
items = newItems;
}
long /*int*/ boxHandle = gtk_box_new(OS.GTK_ORIENTATION_HORIZONTAL, false, 0);
if (boxHandle == 0) error(SWT.ERROR_NO_HANDLES);
long /*int*/ labelHandle = OS.gtk_label_new_with_mnemonic(null);
if (labelHandle == 0) error(SWT.ERROR_NO_HANDLES);
long /*int*/ imageHandle = OS.gtk_image_new();
if (imageHandle == 0) error(SWT.ERROR_NO_HANDLES);
OS.gtk_container_add(boxHandle, imageHandle);
OS.gtk_container_add(boxHandle, labelHandle);
long /*int*/ pageHandle = OS.g_object_new(display.gtk_fixed_get_type(), 0);
if (pageHandle == 0) error(SWT.ERROR_NO_HANDLES);
if (OS.GTK3) {
OS.gtk_widget_override_background_color(pageHandle, OS.GTK_STATE_FLAG_NORMAL, new GdkRGBA());
long /*int*/ region = OS.gdk_region_new();
OS.gtk_widget_input_shape_combine_region(pageHandle, region);
OS.gdk_region_destroy(region);
}
OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE);
OS.gtk_notebook_insert_page(handle, pageHandle, boxHandle, index);
OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE);
OS.gtk_widget_show(boxHandle);
OS.gtk_widget_show(labelHandle);
OS.gtk_widget_show(pageHandle);
item.state |= HANDLE;
item.handle = boxHandle;
item.labelHandle = labelHandle;
item.imageHandle = imageHandle;
item.pageHandle = pageHandle;
System.arraycopy(items, index, items, index + 1, itemCount++ - index);
items[index] = item;
if ((state & FOREGROUND) != 0) {
item.setForegroundColor(getForegroundColor());
}
if ((state & FONT) != 0) {
item.setFontDescription(getFontDescription());
}
if (itemCount == 1) {
OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE);
OS.gtk_notebook_set_current_page(handle, 0);
OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE);
Event event = new Event();
event.item = items[0];
sendSelectionEvent(SWT.Selection, event, false);
// the widget could be destroyed at this point
}
}