Example usage for com.google.gwt.user.client.ui Widget isAttached

Introduction

In this page you can find the example usage for com.google.gwt.user.client.ui Widget isAttached.

Prototype

@Override
public boolean isAttached() 

Source Link

Document

Determines whether this widget is currently attached to the browser's document (i.e., there is an unbroken chain of widgets between this widget and the underlying browser document).

Usage

From source file:com.seanchenxi.gwt.ui.widget.Mask.java

License:Apache License

public static void showMaskFor(final Widget widget) {
    clearHandler();// w ww . ja  v  a 2 s .  c o  m
    if (widget.isAttached()) {
        RESOURCES.style().ensureInjected();
        MASK.addStyleName(RESOURCES.style().loaderIcon());
        Element element = widget.getElement();
        MASK.setPixelSize(element.getOffsetWidth(), element.getOffsetHeight());
        RootPanel.get().add(MASK, DOM.getAbsoluteLeft(element), DOM.getAbsoluteTop(element));
    } else {
        delayHandler(widget);
    }
}

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From source file:com.sencha.gxt.core.client.util.ClickRepeater.java

License:sencha.com license

/**
 * Creates a new click repeater./*from   w w  w . java 2s . co m*/
 * 
 * @param target the target widget
 * @param el the element to be clicked
 */
public ClickRepeater(Widget target, XElement el) {
    this.target = target;
    this.el = el;
    preview = new BaseEventPreview() {
        protected boolean onPreview(NativePreviewEvent pe) {
            if (pe.getTypeInt() == Event.ONMOUSEUP) {
                ClickRepeater.this.handleMouseUp();
            }
            return true;
        }
    };
    preview.setAutoHide(false);

    target.addDomHandler(handler, MouseDownEvent.getType());
    target.addDomHandler(handler, MouseOutEvent.getType());
    target.addDomHandler(handler, MouseOverEvent.getType());
    if (GXT.isTouch()) {
        target.addDomHandler(handler, TouchStartEvent.getType());
        target.addDomHandler(handler, TouchEndEvent.getType());
    }
    target.addAttachHandler(handler);

    if (target.isAttached()) {
        doAttach();
    }
}

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From source file:com.sencha.gxt.widget.core.client.form.error.SideErrorHandler.java

License:sencha.com license

public SideErrorHandler(Widget target) {
    this.target = target;

    Handler handler = new Handler();
    handlers.add(target.addAttachHandler(handler));

    if (target.isAttached()) {
        doAttach();/*  w  ww  .  j a v a  2s.  co  m*/
    }

    if (target instanceof HasResizeHandlers) {
        handlers.add(((HasResizeHandlers) target).addResizeHandler(handler));
    }

    resources = GWT.create(SideErrorResources.class);
}

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From source file:com.sencha.gxt.widget.core.client.grid.editing.GridInlineEditing.java

License:sencha.com license

private void removeEditor(final GridCell cell, final IsField<?> field) {
    assert field != null;
    removeFieldBlurHandler();/* w  w  w. j  a va  2 s . co  m*/

    if (GXT.isIE() && field instanceof ValueBaseField<?>) {
        ValueBaseField<?> f = (ValueBaseField<?>) field;
        f.getCell().getInputElement(f.getElement()).blur();
    }

    Widget w = field.asWidget();
    if (field != null && w.isAttached()) {
        field.asWidget().setVisible(false);
        ComponentHelper.setParent(null, w);
        ComponentHelper.doDetach(w);
    }
}

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From source file:com.totsp.gwittir.client.ui.util.ChangeMarkerListener.java

License:Open Source License

public void propertyChange(PropertyChangeEvent propertyChangeEvent) {
    if (propertyChangeEvent.getSource() instanceof Widget) {
        Widget widget = (Widget) propertyChangeEvent.getSource();
        if (propertyChangeEvent.getPropertyName().equals("value")) {
            valueHasChanged = true;//from   w  w  w . j  ava  2  s .co m
            if (factory.isMarking() && widget.isAttached()) {
                showMarker(widget);
            }
            if (widget instanceof BoundWidget) {
                BoundWidget bw = (BoundWidget) widget;
                List widgets = (List) factory.widgetLookup.get(bw.getModel());
                if (widgets == null) {
                    widgets = new ArrayList();
                    factory.widgetLookup.put(bw.getModel(), widgets);
                }
                if (!widgets.contains(bw)) {
                    widgets.add(bw);
                }

            }
        } else if (propertyChangeEvent.getPropertyName().equals("attached")) {
            Boolean att = (Boolean) propertyChangeEvent.getNewValue();
            if (factory.isMarking() && att.booleanValue() && valueHasChanged) {
                showMarker(widget);
            } else {
                hideMarker(widget);
            }
        }
    }

}

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From source file:com.vaadin.client.ui.customlayout.CustomLayoutConnector.java

License:Apache License

@Override
public void onConnectorHierarchyChange(ConnectorHierarchyChangeEvent event) {
    // Must call here in addition to onStateChanged because
    // onConnectorHierarchyChange is invoked before onStateChanged
    updateHtmlTemplate();//from ww w.j av  a  2s .c  o  m
    // For all contained widgets
    for (ComponentConnector child : getChildComponents()) {
        String location = getState().childLocations.get(child);
        try {
            getWidget().setWidget(child.getWidget(), location);
        } catch (final IllegalArgumentException e) {
            // If no location is found, this component is not visible
            getLogger().warning("Child not rendered as no slot with id '" + location + "' has been defined");
        }
    }
    for (ComponentConnector oldChild : event.getOldChildren()) {
        if (oldChild.getParent() == this) {
            // Connector still a child of this
            continue;
        }
        Widget oldChildWidget = oldChild.getWidget();
        if (oldChildWidget.isAttached()) {
            // slot of this widget is emptied, remove it
            getWidget().remove(oldChildWidget);
        }
    }

}

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From source file:com.vaadin.client.ui.tabsheet.TabsheetBaseConnector.java

License:Apache License

@Override
public void onStateChanged(StateChangeEvent stateChangeEvent) {
    super.onStateChanged(stateChangeEvent);

    // Update member references
    getWidget().setEnabled(isEnabled());

    // Widgets in the TabSheet before update
    ArrayList<Widget> oldWidgets = new ArrayList<Widget>();
    for (Iterator<Widget> iterator = getWidget().getWidgetIterator(); iterator.hasNext();) {
        oldWidgets.add(iterator.next());
    }/*from  ww  w  . j  a  v  a 2s.c o  m*/

    // Clear previous values
    getWidget().clearTabKeys();

    int index = 0;
    for (TabState tab : getState().tabs) {
        final String key = tab.key;
        final boolean selected = key.equals(getState().selected);

        getWidget().addTabKey(key, !tab.enabled && tab.visible);

        if (selected) {
            getWidget().setActiveTabIndex(index);
        }
        getWidget().renderTab(tab, index);
        if (selected) {
            getWidget().selectTab(index);
        }
        index++;
    }

    int tabCount = getWidget().getTabCount();
    while (tabCount-- > index) {
        getWidget().removeTab(index);
    }

    for (int i = 0; i < getWidget().getTabCount(); i++) {
        ComponentConnector p = getWidget().getTab(i);
        // null for PlaceHolder widgets
        if (p != null) {
            oldWidgets.remove(p.getWidget());
        }
    }

    // Detach any old tab widget, should be max 1
    for (Iterator<Widget> iterator = oldWidgets.iterator(); iterator.hasNext();) {
        Widget oldWidget = iterator.next();
        if (oldWidget.isAttached()) {
            oldWidget.removeFromParent();
        }
    }
}

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From source file:com.vaadin.client.WidgetUtil.java

License:Apache License

/**
 * Kind of stronger version of isAttached(). In addition to std isAttached,
 * this method checks that this widget nor any of its parents is hidden. Can
 * be e.g used to check whether component should react to some events or
 * not./*from ww w .j av  a 2s  .  c om*/
 * 
 * @param widget
 * @return true if attached and displayed
 */
public static boolean isAttachedAndDisplayed(Widget widget) {
    if (widget.isAttached()) {
        /*
         * Failfast using offset size, then by iterating the widget tree
         */
        boolean notZeroSized = widget.getOffsetHeight() > 0 || widget.getOffsetWidth() > 0;
        return notZeroSized || checkVisibilityRecursively(widget);
    } else {
        return false;
    }
}

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From source file:com.vaadin.terminal.gwt.client.ApplicationConnection.java

License:Open Source License

private void purgeUnregistryBag() {
    for (String id : unregistryBag) {
        ComponentDetail componentDetail = idToPaintableDetail.get(id);
        if (componentDetail == null) {
            /*/* w w w . ja  v a2  s  .c o m*/
             * this should never happen, but it does :-( See e.g.
             * com.vaadin.tests.components.accordion.RemoveTabs (with test
             * script)
             */
            VConsole.error("ApplicationConnetion tried to unregister component (id=" + id
                    + ") that is never registered (or already unregistered)");
            continue;
        }
        // check if can be cleaned
        Widget component = (Widget) componentDetail.getComponent();
        if (!component.isAttached()) {
            // clean reference from ac to paintable
            idToPaintableDetail.remove(id);
        }
        /*
         * else NOP : same component has been reattached to another parent
         * or replaced by another component implementation.
         */
    }

    unregistryBag.clear();
}

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From source file:com.vaadin.terminal.gwt.client.ui.VCustomLayout.java

License:Open Source License

/** Update the layout from UIDL */
public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {
    this.client = client;
    // ApplicationConnection manages generic component features
    if (client.updateComponent(this, uidl, true)) {
        return;/*from w  w w.ja va2 s .c o m*/
    }

    pid = uidl.getId();
    if (!hasTemplate()) {
        // Update HTML template only once
        initializeHTML(uidl, client);
    }

    // Evaluate scripts
    eval(scripts);
    scripts = null;

    iLayout();
    // TODO Check if this is needed
    client.runDescendentsLayout(this);

    Set<Widget> oldWidgets = new HashSet<Widget>();
    oldWidgets.addAll(locationToWidget.values());

    // For all contained widgets
    for (final Iterator<?> i = uidl.getChildIterator(); i.hasNext();) {
        final UIDL uidlForChild = (UIDL) i.next();
        if (uidlForChild.getTag().equals("location")) {
            final String location = uidlForChild.getStringAttribute("name");
            final Paintable child = client.getPaintable(uidlForChild.getChildUIDL(0));
            try {
                setWidget((Widget) child, location);
                child.updateFromUIDL(uidlForChild.getChildUIDL(0), client);
            } catch (final IllegalArgumentException e) {
                // If no location is found, this component is not visible
            }
            oldWidgets.remove(child);
        }
    }
    for (Iterator<Widget> iterator = oldWidgets.iterator(); iterator.hasNext();) {
        Widget oldWidget = iterator.next();
        if (oldWidget.isAttached()) {
            // slot of this widget is emptied, remove it
            remove(oldWidget);
        }
    }

    iLayout();
    // TODO Check if this is needed
    client.runDescendentsLayout(this);

}

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