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

Introduction

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

Prototype

public Widget getParent() 

Source Link

Document

Gets this widget's parent panel.

Usage

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

License:Open Source License

public RenderSpace getAllocatedSpace(Widget child) {
    // TODO needs some special handling for components with only on edge
    // horizontally or vertically defined
    AbsoluteWrapper wrapper = (AbsoluteWrapper) child.getParent();
    int w;/*from   w  ww.  ja  v a2s.c o  m*/
    if (wrapper.left != null && wrapper.right != null) {
        w = wrapper.getOffsetWidth();
    } else if (wrapper.right != null) {
        // left == null
        // available width == right edge == offsetleft + width
        w = wrapper.getOffsetWidth() + wrapper.getElement().getOffsetLeft();
    } else {
        // left != null && right == null || left == null &&
        // right == null
        // available width == canvas width - offset left
        w = canvas.getOffsetWidth() - wrapper.getElement().getOffsetLeft();
    }
    int h;
    if (wrapper.top != null && wrapper.bottom != null) {
        h = wrapper.getOffsetHeight();
    } else if (wrapper.bottom != null) {
        // top not defined, available space 0... bottom of wrapper
        h = wrapper.getElement().getOffsetTop() + wrapper.getOffsetHeight();
    } else {
        // top defined or both undefined, available space == canvas - top
        h = canvas.getOffsetHeight() - wrapper.getElement().getOffsetTop();
    }

    return new RenderSpace(w, h);
}

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

License:Open Source License

/**
 * Starts a drag and drop operation from mousedown or touchstart event if
 * required conditions are met.//from ww  w .j  av  a2s. c  o  m
 * 
 * @param event
 * @return true if the event was handled as a drag start event
 */
private boolean startDrag(NativeEvent event) {
    if (dragStartMode == WRAPPER || dragStartMode == COMPONENT) {
        VTransferable transferable = new VTransferable();
        transferable.setDragSource(VDragAndDropWrapper.this);

        Paintable paintable;
        Widget w = Util.findWidget((Element) event.getEventTarget().cast(), null);
        while (w != null && !(w instanceof Paintable)) {
            w = w.getParent();
        }
        paintable = (Paintable) w;

        transferable.setData("component", paintable);
        VDragEvent dragEvent = VDragAndDropManager.get().startDrag(transferable, event, true);

        transferable.setData("mouseDown", new MouseEventDetails(event).serialize());

        if (dragStartMode == WRAPPER) {
            dragEvent.createDragImage(getElement(), true);
        } else {
            dragEvent.createDragImage(((Widget) paintable).getElement(), true);
        }
        return true;
    }
    return false;
}

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

License:Open Source License

@Override
public boolean onEventPreview(Event event) {
    if (dragging) {
        onDragEvent(event);//from   w w w .j av  a2s.co m
        return false;
    } else if (resizing) {
        onResizeEvent(event);
        return false;
    } else if (vaadinModality) {
        // return false when modal and outside window
        final Element target = event.getEventTarget().cast();
        if (DOM.getCaptureElement() != null) {
            // Allow events when capture is set
            return true;
        }

        if (!DOM.isOrHasChild(getElement(), target)) {
            // not within the modal window, but let's see if it's in the
            // debug window
            Widget w = Util.findWidget(target, null);
            while (w != null) {
                if (w instanceof Console) {
                    return true; // allow debug-window clicks
                } else if (w instanceof Paintable) {
                    return false;
                }
                w = w.getParent();
            }
            return false;
        }
    }
    return true;
}

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

License:Open Source License

/**
 * Called when the size of one or more widgets have changed during
 * rendering. Finds parent container and notifies them of the size change.
 * //  w w w  . j  a v a  2 s  .  c o m
 * @param paintables
 */
public static void componentSizeUpdated(Set<Paintable> paintables) {
    if (paintables.isEmpty()) {
        return;
    }

    Map<Container, Set<Paintable>> childWidgets = new HashMap<Container, Set<Paintable>>();

    for (Paintable paintable : paintables) {
        Widget widget = (Widget) paintable;
        if (!widget.isAttached()) {
            continue;
        }

        // ApplicationConnection.getConsole().log(
        // "Widget " + Util.getSimpleName(widget) + " size updated");
        Widget parent = widget.getParent();
        while (parent != null && !(parent instanceof Container)) {
            parent = parent.getParent();
        }
        if (parent != null) {
            Set<Paintable> set = childWidgets.get(parent);
            if (set == null) {
                set = new HashSet<Paintable>();
                childWidgets.put((Container) parent, set);
            }
            set.add(paintable);
        }
    }

    Set<Paintable> parentChanges = new HashSet<Paintable>();
    for (Container parent : childWidgets.keySet()) {
        if (!parent.requestLayout(childWidgets.get(parent))) {
            parentChanges.add(parent);
        }
    }

    componentSizeUpdated(parentChanges);
}

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

License:Open Source License

/**
 * Returns closest parent Widget in hierarchy that implements Container
 * interface/*w ww  .  java  2 s. c o m*/
 * 
 * @param component
 * @return closest parent Container
 */
public static Container getLayout(Widget component) {
    Widget parent = component.getParent();
    while (parent != null && !(parent instanceof Container)) {
        parent = parent.getParent();
    }
    if (parent != null) {
        assert ((Container) parent).hasChildComponent(component);

        return (Container) parent;
    }
    return null;
}

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

License:Open Source License

/**
 * Helper method to find first instance of given Widget type found by
 * traversing DOM upwards from given element.
 * //from  w  ww.  jav a2  s . c o m
 * @param element
 *            the element where to start seeking of Widget
 * @param class1
 *            the Widget type to seek for
 */
public static <T> T findWidget(Element element, Class<? extends Widget> class1) {
    if (element != null) {
        /* First seek for the first EventListener (~Widget) from dom */
        EventListener eventListener = null;
        while (eventListener == null && element != null) {
            eventListener = Event.getEventListener(element);
            if (eventListener == null) {
                element = (Element) element.getParentElement();
            }
        }
        if (eventListener != null) {
            /*
             * Then find the first widget of type class1 from widget
             * hierarchy
             */
            Widget w = (Widget) eventListener;
            while (w != null) {
                if (class1 == null || w.getClass() == class1) {
                    return (T) w;
                }
                w = w.getParent();
            }
        }
    }
    return null;
}

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From source file:com.zipsoft.widgets.client.lazylayout.VLazyLayout.java

License:Apache License

/**
 * This method re-evaluates the component the scroll adjustment should base
 * upon.//from ww  w .  j  a va 2 s  .c o  m
 * 
 * @see #fixScrollbar()
 */
private void updateScrollAdjustmentReference() {
    final int currentScrollPos = getCurrentScrollPos();
    final Widget referenceWidget = getFirstNonPlaceholderWidgetInOrAfter(currentScrollPos);

    if (referenceWidget != null) {
        this.referenceWidget = referenceWidget;
        debug("is parent: " + (referenceWidget.getParent() == panel));
        scrollOffsetToReferenceWidgetPx = currentScrollPos - referenceWidget.getElement().getOffsetTop();
        debug("scroll offset: " + scrollOffsetToReferenceWidgetPx);
    } else {
        this.referenceWidget = null;
        scrollOffsetToReferenceWidgetPx = -1;
    }
}

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From source file:cz.filmtit.client.pages.TranslationWorkspace.java

License:Open Source License

/**
 * Hide the currently active (visible) popup with suggestions
 *///  w  ww.  j  a va2  s .co  m
public void deactivateSuggestionWidget() {
    Widget w = this.activeSuggestionWidget;
    if (w != null) {
        if (w instanceof PopupPanel) {
            //((PopupPanel)w).hide();
            w.setVisible(false);
        } else {
            ((Panel) (w.getParent())).remove(w);
        }
        setActiveSuggestionWidget(null);
    }
}

---

From source file:cz.filmtit.client.pages.TranslationWorkspace.java

License:Open Source License

public void deactivatePosteditWidget() {
    Widget w = this.activePosteditWidget;
    if (w != null) {
        if (w instanceof PopupPanel) {
            ((PopupPanel) w).setVisible(false);
        } else {// www  .ja v a2s .  c  o  m
            ((Panel) w.getParent()).remove(w);
        }
        setActivePosteditWidget(null);
    }
}

---

From source file:de.decidr.modelingtoolbase.client.ui.selection.SelectionHandler.java

License:Apache License

@Override
public void onMouseDown(MouseDownEvent event) {
    // workaround for Firefox: prevent propagation of the event to
    // underlying objects (workflow or container), so that the selected item
    // stays selected!
    event.stopPropagation();/*from   w  w  w  . ja v  a  2s.  c o m*/

    Object source = event.getSource();
    // System.out.println(source.getClass());

    // select the clicked node or connection
    Widget w = (Widget) source;
    if ((source instanceof FocusPanel) && (w.getParent() instanceof Node)) {
        Node node = (Node) w.getParent();
        select(node);

    } else if (source instanceof ConnectionLine) {
        Connection connection = ((ConnectionLine) source).getConnection();
        select(connection);

    } else if (source instanceof ConnectionDragBox) {
        Connection connection = ((ConnectionDragBox) source).getConnection();
        if (connection != null) {
            select(connection);
        }
    } else if (source instanceof DragBox) {
        // do not unselect item, it is being dragged
    } else {
        // unselect selected item
        unselect();
    }
}

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