/**
* 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;
}
@Override
public void handleMessage(int code, Object data) {
switch (code) {
// First re-check visibility of all tabs.
// While tab deletion can be made on the fly,
// tabs adding will be made by re-creation
// of all elements, to preserve their order
case ICPropertyTab.MANAGEDBUILDSTATE:
if (folder == null) {
if (itabs == null || itabs.size() == 0) return;
ICPropertyTab t = itabs.get(0).tab;
if (!t.canBeVisible()) t.handleTabEvent(ICPropertyTab.VISIBLE, null);
return;
}
boolean willAdd = false;
TabItem[] ts = folder.getItems();
int x = folder.getSelectionIndex();
String currHeader = (x == -1) ? null : ts[x].getText();
for (int i = 0; i < itabs.size(); i++) {
InternalTab itab = itabs.get(i);
TabItem ti = null;
for (TabItem element2 : ts) {
if (element2.isDisposed()) continue;
if (element2.getData() == itab.tab) {
ti = element2;
break;
}
}
if (itab.tab.canBeVisible()) {
if (ti == null) {
willAdd = true;
break;
}
} else {
if (ti != null) ti.dispose();
}
}
// in case of new tab added,
// we have to dispose and re-create all tabs
if (willAdd) {
for (int j = 0; j < ts.length; j++)
if (ts[j] != null && !ts[j].isDisposed()) ts[j].dispose();
TabItem ti = null;
for (int i = 0; i < itabs.size(); i++) {
InternalTab itab = itabs.get(i);
if (itab.tab.canBeVisible()) {
TabItem currTI = itab.createOn(folder);
if (currHeader != null && currHeader.equals(itab.text)) ti = currTI;
}
}
if (ti != null) folder.setSelection(ti);
}
break;
}
}
/**
* Returns the tab for the given part, or null if there is no such tab
*
* @param part the part being searched for
* @return the tab for the given part, or null if there is no such tab
*/
protected final TabItem getTab(IPresentablePart part) {
TabItem[] items = tabFolder.getItems();
int idx = indexOf(part);
if (idx < items.length) {
return items[idx];
}
return null;
}
/** Adjust the layout of the field editors so that they are properly aligned. */
protected void adjustGridLayout() {
if (folder != null) {
TabItem[] items = folder.getItems();
for (int j = 0; j < items.length; j++) {
GridLayout layout = ((GridLayout) ((Composite) items[j].getControl()).getLayout());
layout.numColumns = 3;
layout.marginHeight = 5;
layout.marginWidth = 5;
}
}
// need to call super.adjustGridLayout() since fieldEditor.adjustForNumColumns() is protected
super.adjustGridLayout();
// reset the main container to a single column
((GridLayout) super.getFieldEditorParent().getLayout()).numColumns = 1;
}
/**
* Returns the index of the tab for the given part, or returns tabFolder.getItemCount() if there
* is no such tab.
*
* @param part part being searched for
* @return the index of the tab for the given part, or the number of tabs if there is no such tab
*/
private final int indexOf(IPresentablePart part) {
if (part == null) {
return tabFolder.getItemCount();
}
TabItem[] items = tabFolder.getItems();
for (int idx = 0; idx < items.length; idx++) {
IPresentablePart tabPart = getPartForTab(items[idx]);
if (part == tabPart) {
return idx;
}
}
return items.length;
}
public void createWidgets(Composite c) {
GridData gd;
parentComposite = new Composite(c, SWT.NONE);
parentComposite.setLayoutData(gd = new GridData(GridData.FILL_BOTH));
gd.widthHint = 800;
itabs.clear();
if (!isSingle()) {
parentComposite.setLayout(new FillLayout());
folder = new TabFolder(parentComposite, SWT.NONE);
// folder.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_DARK_GRAY));
}
loadExtensionsSynchronized(parentComposite);
// Set listener after data load, to avoid firing
// selection event on not-initialized tab items
if (folder != null) {
folder.addSelectionListener(
new SelectionAdapter() {
@Override
public void widgetSelected(org.eclipse.swt.events.SelectionEvent event) {
if (folder.getSelection().length > 0) {
updateSelectedTab();
}
}
});
if (folder.getItemCount() > 0) {
int selectedTab = 0;
Class<? extends ICPropertyTab> recentTab = recentTabs.get(getClass());
if (recentTab != null) {
TabItem[] tabs = folder.getItems();
for (int i = 0; i < tabs.length; i++) {
TabItem control = tabs[i];
if (recentTab.isInstance(control.getData())) {
selectedTab = i;
break;
}
}
}
folder.setSelection(selectedTab);
updateSelectedTab();
}
}
}
/**
* Gets the "Example" widget children's items, if any.
*
* @return an array containing the example widget children's items
*/
Item[] getExampleWidgetItems() {
return tabFolder1.getItems();
}
