Java Code Examples for com.vaadin.client.UIDL#getStringAttribute()

@Override
protected void updateBrowserHistory(UIDL uidl) {
    String lastHistoryOp = uidl.getStringAttribute(CubaUIConstants.LAST_HISTORY_OP);

    History history = Browser.getWindow().getHistory();
    String pageTitle = getState().pageState.title;

    String replace = uidl.getStringAttribute(UIConstants.ATTRIBUTE_REPLACE_STATE);
    String push = uidl.getStringAttribute(UIConstants.ATTRIBUTE_PUSH_STATE);

    if (CubaUIConstants.HISTORY_PUSH_OP.equals(lastHistoryOp)) {
        if (uidl.hasAttribute(UIConstants.ATTRIBUTE_REPLACE_STATE)) {
            history.replaceState(null, pageTitle, replace);
        }
        if (uidl.hasAttribute(UIConstants.ATTRIBUTE_PUSH_STATE)) {
            history.pushState(null, pageTitle, push);
        }
    } else {
        if (uidl.hasAttribute(UIConstants.ATTRIBUTE_PUSH_STATE)) {
            history.pushState(null, pageTitle, push);
        }
        if (uidl.hasAttribute(UIConstants.ATTRIBUTE_REPLACE_STATE)) {
            history.replaceState(null, pageTitle, replace);
        }
    }
}
 

@Override
// Exception squid:S1166 - Hide origin exception
// Exception squid:S2221 - This code is trans-coded to JavaScript, hence
// Exception semantics changes
@SuppressWarnings({ "squid:S1166", "squid:S2221" })
protected boolean accept(VDragEvent drag, UIDL configuration) {
    try {

        String component = drag.getTransferable().getDragSource().getWidget().getElement().getId();
        int c = configuration.getIntAttribute(COMPONENT_COUNT);
        String mode = configuration.getStringAttribute(MODE);
        for (int dragSourceIndex = 0; dragSourceIndex < c; dragSourceIndex++) {
            String requiredPid = configuration.getStringAttribute(COMPONENT + dragSourceIndex);
            if ((STRICT_MODE.equals(mode) && component.equals(requiredPid))
                    || (PREFIX_MODE.equals(mode) && component.startsWith(requiredPid))) {
                return true;
            }

        }
    } catch (Exception e) {
        // log and continue
        LOGGER.log(Level.SEVERE, "Error verifying drop target: " + e.getLocalizedMessage());
    }
    return false;
}
 

/**
 * Hides the highlighted drop target hints.
 *
 * @param configuration
 *            for the accept criterion to retrieve the drop target hints.
 */
// Exception squid:S1166 - Hide origin exception
// Exception squid:S2221 - This code is trans-coded to JavaScript, hence
// Exception semantics changes
@SuppressWarnings({ "squid:S1166", "squid:S2221" })
void hideDropTargetHints(final UIDL configuration) {
    final int totalDropTargetHintsCount = configuration.getIntAttribute(DROP_AREA_CONFIG_COUNT);
    for (int dropAreaIndex = 0; dropAreaIndex < totalDropTargetHintsCount; dropAreaIndex++) {
        try {
            final String dropArea = configuration.getStringAttribute(DROP_AREA_CONFIG + dropAreaIndex);
            final Element hideHintFor = Document.get().getElementById(dropArea);
            if (hideHintFor != null) {
                hideHintFor.removeClassName(ViewComponentClientCriterion.HINT_AREA_STYLE);
            }
        } catch (final Exception e) {
            // log and continue
            LOGGER.log(Level.SEVERE, "Error highlighting valid drop targets: " + e.getLocalizedMessage());
        }
    }
}
 

/**
 * Checks if this accept criterion is responsible for the current drag
 * source. Therefore the current drag source id has to start with the drag
 * source id-prefix configured for the criterion.
 *
 * @param drag
 *            the current drag event holding the context.
 * @param configuration
 *            for the accept criterion to retrieve the configured drag
 *            source id-prefix.
 * @return <code>true</code> if the criterion is responsible for the current
 *         drag source, otherwise <code>false</code>.
 */
// Exception squid:S1166 - Hide origin exception
// Exception squid:S2221 - This code is trans-coded to JavaScript, hence
// Exception semantics changes
@SuppressWarnings({ "squid:S1166", "squid:S2221" })
boolean isValidDragSource(final VDragEvent drag, final UIDL configuration) {
    try {
        final String dragSource = drag.getTransferable().getDragSource().getWidget().getElement().getId();
        final String dragSourcePrefix = configuration.getStringAttribute(DRAG_SOURCE);
        if (dragSource.startsWith(dragSourcePrefix)) {
            return true;
        }
    } catch (final Exception e) {
        // log and continue
        LOGGER.log(Level.SEVERE, "Error verifying drag source: " + e.getLocalizedMessage());
    }

    return false;
}
 

/**
 * Highlights the valid drop targets configured for the criterion.
 *
 * @param configuration
 *            for the accept criterion to retrieve the configured drop hint
 *            areas.
 */
// Exception squid:S1166 - Hide origin exception
// Exception squid:S2221 - This code is trans-coded to JavaScript, hence
// Exception semantics changes
// Exception squid:S2629 - not supported by GWT
@SuppressWarnings({ "squid:S1166", "squid:S2221", "squid:S2629" })
void showDropTargetHints(final UIDL configuration) {
    final int dropAreaCount = configuration.getIntAttribute(DROP_AREA_COUNT);
    for (int dropAreaIndex = 0; dropAreaIndex < dropAreaCount; dropAreaIndex++) {
        try {
            final String dropArea = configuration.getStringAttribute(DROP_AREA + dropAreaIndex);
            LOGGER.log(Level.FINE, "Hint Area: " + dropArea);

            final Element showHintFor = Document.get().getElementById(dropArea);
            if (showHintFor != null) {
                showHintFor.addClassName(HINT_AREA_STYLE);
            }
        } catch (final Exception e) {
            // log and continue
            LOGGER.log(Level.SEVERE, "Error highlighting drop targets: " + e.getLocalizedMessage());
        }
    }

}
 

/**
 * Checks if the current drop location is a valid drop target for the
 * criterion. Therefore the current drop location id has to start with one
 * of the drop target id-prefixes configured for the criterion.
 *
 * @param configuration
 *            for the accept criterion to retrieve the configured drop
 *            target id-prefixes.
 * @return <code>true</code> if the current drop location is a valid drop
 *         target for the criterion, otherwise <code>false</code>.
 */
// Exception squid:S1166 - Hide origin exception
// Exception squid:S2221 - This code is trans-coded to JavaScript, hence
// Exception semantics changes
// Exception squid:S2629 - not supported by GWT
@SuppressWarnings({ "squid:S1166", "squid:S2221", "squid:S2629" })
boolean isValidDropTarget(final UIDL configuration) {
    try {
        final String dropTarget = VDragAndDropManager.get().getCurrentDropHandler().getConnector().getWidget()
                .getElement().getId();
        final int dropTargetCount = configuration.getIntAttribute(DROP_TARGET_COUNT);
        for (int dropTargetIndex = 0; dropTargetIndex < dropTargetCount; dropTargetIndex++) {
            final String dropTargetPrefix = configuration.getStringAttribute(DROP_TARGET + dropTargetIndex);
            LOGGER.log(Level.FINE, "Drop Target: " + dropTargetPrefix);
            if (dropTarget.startsWith(dropTargetPrefix)) {
                return true;
            }
        }
    } catch (final Exception e) {
        // log and continue
        LOGGER.log(Level.SEVERE, "Error verifying drop target: " + e.getLocalizedMessage());
    }
    return false;
}
 

protected void addCellsFromUIDL(UIDL uidl) {
    int colIndex = 0;
    final Iterator cells = uidl.getChildIterator();
    while (cells.hasNext() && colIndex < tableWidget.getVisibleColOrder().length) {
        String columnId = tableWidget.getVisibleColOrder()[colIndex];

        if (addSpecificCell(columnId, colIndex)) {
            colIndex++;
            continue;
        }

        final Object cell = cells.next();

        String style = "";
        if (uidl.hasAttribute("style-" + columnId)) {
            style = uidl.getStringAttribute("style-" + columnId);
        }

        boolean sorted = tableWidget.getHead().getHeaderCell(colIndex).isSorted();

        if (isAggregationEditable(uidl, colIndex)) {
            addCellWithField((String) cell, aligns[colIndex], colIndex);
        } else if (cell instanceof String) {
            addCell((String) cell, aligns[colIndex], style, sorted);
        }

        final String colKey = tableWidget.getColKeyByIndex(colIndex);
        int colWidth;
        if ((colWidth = tableWidget.getColWidth(colKey)) > -1) {
            tableWidget.setColWidth(colIndex, colWidth, false);
        }

        colIndex++;
    }
}
 

@Override
protected void assignAdditionalMenuStyles(VMenuBar currentMenu, UIDL item) {
    String icon = item.getStringAttribute("icon");
    if (icon != null) {
        currentMenu.addStyleDependentName("has-icons");
    }
}
 

public void updateFromUIDL(UIDL uidl) {
    if (container.hasChildNodes()) {
        container.removeAllChildren();
    }

    aligns = tableWidget.getHead().getColumnAlignments();

    if (uidl.getChildCount() > 0) {
        final Element table = DOM.createTable();
        table.setAttribute("cellpadding", "0");
        table.setAttribute("cellspacing", "0");

        final Element tBody = DOM.createTBody();
        tr = DOM.createTR();

        tr.setClassName(tableWidget.getStylePrimaryName() + "-arow-row");

        if (inputsList != null && !inputsList.isEmpty()) {
            inputsList.clear();
        }

        addCellsFromUIDL(uidl);

        tBody.appendChild(tr);
        table.appendChild(tBody);

        DivElement tableWrapper = Document.get().createDivElement();
        tableWrapper.appendChild(table);
        container.appendChild(tableWrapper);

        // set focus to input if we pressed `ENTER`
        String focusColumnKey = uidl.getStringAttribute("focusInput");
        if (focusColumnKey != null && inputsList != null) {
            for (AggregationInputFieldInfo info : inputsList) {
                if (info.getColumnKey().equals(focusColumnKey)) {
                    info.getInputElement().focus();
                    break;
                }
            }
        }
    }

    initialized = container.hasChildNodes();
}
 

@Override
public String buildItemHTML(UIDL item) {
    // Construct html from the text and the optional icon
    // Haulmont API : Added support for shortcuts
    StringBuilder itemHTML = new StringBuilder();
    if (item.hasAttribute("separator")) {
        itemHTML.append("<span>---</span><span>---</span>");
    } else {
        itemHTML.append("<span class=\"")
                .append(getStylePrimaryName())
                .append("-menuitem-caption\">");

        Icon icon = client.getIcon(item.getStringAttribute("icon"));
        if (icon != null) {
            itemHTML.append(icon.getElement().getString());
        }

        String itemText = item.getStringAttribute("text");
        if (!htmlContentAllowed) {
            itemText = WidgetUtil.escapeHTML(itemText);
        }
        itemHTML.append(itemText);
        itemHTML.append("</span>");

        // Add submenu indicator
        if (item.getChildCount() > 0) {
            String bgStyle = "";
            itemHTML.append("<span class=\"")
                    .append(getStylePrimaryName())
                    .append("-submenu-indicator\"")
                    .append(bgStyle)
                    .append("><span class=\"")
                    .append(getStylePrimaryName())
                    .append("-submenu-indicator-icon\"")
                    .append("><span class=\"text\">&#x25BA;</span></span></span>");
        } else {
            itemHTML.append("<span class=\"");
            String shortcut = "";
            if (item.hasAttribute("shortcut")) {
                shortcut = item.getStringAttribute("shortcut");
            } else {
                itemHTML.append(getStylePrimaryName())
                        .append("-menuitem-empty-shortcut ");
            }

            itemHTML.append(getStylePrimaryName())
                    .append("-menuitem-shortcut\">")
                    .append(shortcut)
                    .append("</span");
        }
    }
    return itemHTML.toString();
}
 

@Override
// Exception squid:S1604 - GWT 2.7 does not support Java 8
@SuppressWarnings("squid:S1604")
public void accept(final VDragEvent drag, final UIDL configuration, final VAcceptCallback callback) {

    if (isDragStarting(drag)) {
        final NativePreviewHandler nativeEventHandler = new NativePreviewHandler() {
            @Override
            public void onPreviewNativeEvent(final NativePreviewEvent event) {
                if (isEscKey(event) || isMouseUp(event)) {
                    try {
                        hideDropTargetHints(configuration);
                    } finally {
                        nativeEventHandlerRegistration.removeHandler();
                    }
                }
            }
        };

        nativeEventHandlerRegistration = Event.addNativePreviewHandler(nativeEventHandler);
        setMultiRowDragDecoration(drag);
    }

    final int childCount = configuration.getChildCount();
    accepted = false;
    for (int childIndex = 0; childIndex < childCount; childIndex++) {
        final VAcceptCriterion crit = getCriteria(configuration, childIndex);
        crit.accept(drag, configuration.getChildUIDL(childIndex), this);
        if (Boolean.TRUE.equals(accepted)) {
            callback.accepted(drag);
            return;
        }
    }

    // if no VAcceptCriterion accepts and the mouse is release, an error
    // message is shown
    if (Event.ONMOUSEUP == Event.getTypeInt(drag.getCurrentGwtEvent().getType())) {
        showErrorNotification(drag);
    }

    errorMessage = configuration.getStringAttribute(ERROR_MESSAGE);
}