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- /*
- @VaadinApache2LicenseForJavaFiles@
- */
- package com.vaadin.terminal.gwt.client.ui;
-
- import java.util.ArrayList;
- import java.util.HashSet;
- import java.util.Iterator;
- import java.util.Set;
-
- import com.google.gwt.user.client.DOM;
- import com.google.gwt.user.client.ui.ComplexPanel;
- import com.google.gwt.user.client.ui.Widget;
- import com.vaadin.terminal.gwt.client.ApplicationConnection;
- import com.vaadin.terminal.gwt.client.Container;
- import com.vaadin.terminal.gwt.client.UIDL;
- import com.vaadin.terminal.gwt.client.VPaintableMap;
- import com.vaadin.terminal.gwt.client.VPaintableWidget;
-
- abstract class VTabsheetBase extends ComplexPanel implements Container {
-
- String id;
- ApplicationConnection client;
-
- protected final ArrayList<String> tabKeys = new ArrayList<String>();
- protected int activeTabIndex = 0;
- protected boolean disabled;
- protected boolean readonly;
- protected Set<String> disabledTabKeys = new HashSet<String>();
- protected boolean cachedUpdate = false;
-
- public VTabsheetBase(String classname) {
- setElement(DOM.createDiv());
- setStyleName(classname);
- }
-
- public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {
- this.client = client;
-
- // Ensure correct implementation
- cachedUpdate = client.updateComponent(this, uidl, true);
- if (cachedUpdate) {
- return;
- }
-
- // Update member references
- id = uidl.getId();
- disabled = uidl.hasAttribute("disabled");
-
- // Render content
- final UIDL tabs = uidl.getChildUIDL(0);
-
- // Paintables in the TabSheet before update
- ArrayList<Widget> oldWidgets = new ArrayList<Widget>();
- for (Iterator<Widget> iterator = getWidgetIterator(); iterator
- .hasNext();) {
- oldWidgets.add(iterator.next());
- }
-
- // Clear previous values
- tabKeys.clear();
- disabledTabKeys.clear();
-
- int index = 0;
- for (final Iterator<Object> it = tabs.getChildIterator(); it.hasNext();) {
- final UIDL tab = (UIDL) it.next();
- final String key = tab.getStringAttribute("key");
- final boolean selected = tab.getBooleanAttribute("selected");
- final boolean hidden = tab.getBooleanAttribute("hidden");
-
- if (tab.getBooleanAttribute("disabled")) {
- disabledTabKeys.add(key);
- }
-
- tabKeys.add(key);
-
- if (selected) {
- activeTabIndex = index;
- }
- renderTab(tab, index, selected, hidden);
- index++;
- }
-
- int tabCount = getTabCount();
- while (tabCount-- > index) {
- removeTab(index);
- }
-
- for (int i = 0; i < getTabCount(); i++) {
- VPaintableWidget p = getTab(i);
- // During the initial rendering the paintable might be null (this is
- // weird...)
- if (p != null) {
- oldWidgets.remove(p.getWidgetForPaintable());
- }
- }
-
- // Perform unregister for any paintables removed during update
- for (Iterator<Widget> iterator = oldWidgets.iterator(); iterator
- .hasNext();) {
- Widget oldWidget = iterator.next();
- VPaintableWidget oldPaintable = VPaintableMap.get(client)
- .getPaintable(oldWidget);
- if (oldWidget.isAttached()) {
- oldWidget.removeFromParent();
- }
- VPaintableMap.get(client).unregisterPaintable(oldPaintable);
- }
-
- }
-
- /**
- * @return a list of currently shown Paintables
- *
- * Apparently can be something else than Paintable as
- * {@link #updateFromUIDL(UIDL, ApplicationConnection)} checks if
- * instanceof Paintable. Therefore set to <Object>
- */
- abstract protected Iterator<Widget> getWidgetIterator();
-
- /**
- * Clears current tabs and contents
- */
- abstract protected void clearPaintables();
-
- /**
- * Implement in extending classes. This method should render needed elements
- * and set the visibility of the tab according to the 'selected' parameter.
- */
- protected abstract void renderTab(final UIDL tabUidl, int index,
- boolean selected, boolean hidden);
-
- /**
- * Implement in extending classes. This method should render any previously
- * non-cached content and set the activeTabIndex property to the specified
- * index.
- */
- protected abstract void selectTab(int index, final UIDL contentUidl);
-
- /**
- * Implement in extending classes. This method should return the number of
- * tabs currently rendered.
- */
- protected abstract int getTabCount();
-
- /**
- * Implement in extending classes. This method should return the Paintable
- * corresponding to the given index.
- */
- protected abstract VPaintableWidget getTab(int index);
-
- /**
- * Implement in extending classes. This method should remove the rendered
- * tab with the specified index.
- */
- protected abstract void removeTab(int index);
- }
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