Examples of com.vaadin.terminal.gwt.client.Paintable

com.vaadin.terminal.gwt.client.Paintable
An interface used by client-side widgets or paintable parts to receive updates from the corresponding server-side components in the form of {@link UIDL}. Updates can be sent back to the server using the {@link ApplicationConnection#updateVariable()} methods.


            int i = 0;
            for (final Iterator it = uidl.getChildIterator(); it.hasNext(); i++) {
                prepareCell(i, 1);
                final UIDL childUidl = (UIDL) it.next();
                final Paintable p = client.getPaintable(childUidl);
                Caption caption = componentToCaption.get(p);
                if (caption == null) {
                    caption = new Caption(p, client);
                    componentToCaption.put(p, caption);
                }
                ErrorFlag error = componentToError.get(p);
                if (error == null) {
                    error = new ErrorFlag();
                    componentToError.put(p, error);
                }
                prepareCell(i, COLUMN_WIDGET);
                final Paintable oldComponent = (Paintable) getWidget(i,
                        COLUMN_WIDGET);
                if (oldComponent == null) {
                    setWidget(i, COLUMN_WIDGET, (Widget) p);
                } else if (oldComponent != p) {
                    client.unregisterPaintable(oldComponent);
                    setWidget(i, COLUMN_WIDGET, (Widget) p);
                }
                getCellFormatter().setStyleName(i, COLUMN_WIDGET,
                        CLASSNAME + "-contentcell");
                getCellFormatter().setStyleName(i, COLUMN_CAPTION,
                        CLASSNAME + "-captioncell");
                setWidget(i, COLUMN_CAPTION, caption);


                setContentWidth(i);


                getCellFormatter().setStyleName(i, COLUMN_ERRORFLAG,
                        CLASSNAME + "-errorcell");
                setWidget(i, COLUMN_ERRORFLAG, error);


                p.updateFromUIDL(childUidl, client);


                String rowstyles = CLASSNAME + "-row";
                if (i == 0) {
                    rowstyles += " " + CLASSNAME + "-firstrow";
                }
                if (!it.hasNext()) {
                    rowstyles += " " + CLASSNAME + "-lastrow";
                }


                getRowFormatter().setStyleName(i, rowstyles);


            }


            while (getRowCount() > i) {
                final Paintable p = (Paintable) getWidget(i, COLUMN_WIDGET);
                client.unregisterPaintable(p);
                componentToCaption.remove(p);
                removeRow(i);
            }

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        while (tabCount-- > index) {
            removeTab(index);
        }


        for (int i = 0; i < getTabCount(); i++) {
            Paintable p = getTab(i);
            oldPaintables.remove(p);
        }


        // Perform unregister for any paintables removed during update
        for (Iterator iterator = oldPaintables.iterator(); iterator.hasNext();) {

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            }
            // ChildComponentContainer remove =
            widgetToComponentContainer.remove(widget);
            remove(child);
            if (!relocated) {
                Paintable p = (Paintable) widget;
                client.unregisterPaintable(p);
            }
        }


    }

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        // 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);
            }

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            return super.remove(w);
        }


        public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {


            Paintable newPopupComponent = client.getPaintable(uidl
                    .getChildUIDL(0));


            if (newPopupComponent != popupComponentPaintable) {


                setWidget((Widget) newPopupComponent);

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                final Object cell = cells.next();
                if (cell instanceof String) {
                    tBody.setWidget(curRowIndex, colIndex, new BodyCell(row,
                            (String) cell));
                } else {
                    final Paintable cellContent = client
                            .getPaintable((UIDL) cell);
                    final BodyCell bodyCell = new BodyCell(row);
                    bodyCell.setWidget((Widget) cellContent);
                    tBody.setWidget(curRowIndex, colIndex, bodyCell);
                }

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                // just capture something to prevent text selection in IE
                Event.setCapture(RootPanel.getBodyElement());
            }


            private void addActiveDragSourceStyleName() {
                Paintable dragSource = currentDrag.getTransferable()
                        .getDragSource();
                ((Widget) dragSource)
                        .addStyleName(ACTIVE_DRAG_SOURCE_STYLENAME);
            }
        };

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                    /*
                     * Clean active source class name deferred until response is
                     * handled. E.g. hidden on start, removed in drophandler ->
                     * would flicker in case removed eagerly.
                     */
                    final Paintable dragSource = currentDrag.getTransferable()
                            .getDragSource();
                    final ApplicationConnection client = currentDropHandler
                            .getApplicationConnection();
                    Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
                        public boolean execute() {

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    private void doRequest(DragEventType drop) {
        if (currentDropHandler == null) {
            return;
        }
        Paintable paintable = currentDropHandler.getPaintable();
        ApplicationConnection client = currentDropHandler
                .getApplicationConnection();
        /*
         * For drag events we are using special id that are routed to
         * "drag service" which then again finds the corresponding DropHandler

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    @Override
    protected boolean accept(VDragEvent drag, UIDL configuration) {
        try {
            String pid = configuration.getStringAttribute("s");
            Paintable dragSource = drag.getTransferable().getDragSource();
            String pid2 = VDragAndDropManager.get().getCurrentDropHandler()
                    .getApplicationConnection().getPid(dragSource);
            if (pid2.equals(pid)) {
                Object searchedId = drag.getTransferable().getData("itemId");
                String[] stringArrayAttribute = configuration

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