Java GWT.log方法代碼示例

import com.google.gwt.core.client.GWT; //導入方法依賴的package包/類
@UncaughtExceptionHandler
private void onUncaughtException(Throwable caught) {
    try {
        if (caught instanceof JSONException
                && caught.getMessage().contains("unexpected character at line 1 column 1 of the JSON data")) {
            // Not sure how best to deal with this when using MessageBus
            logger.info("JsonParseException usually as a result of failed redirect to login from message bus");
            Window.Location.assign("/");
        } else {
            throw caught;
        }
    } catch (Throwable t) {
        Window.alert(t.getMessage());
        GWT.log("An unexpected error has occurred", t);
    }
}
 

import com.google.gwt.core.client.GWT; //導入方法依賴的package包/類
private static void safeObjectAppend(StringBuilder sbuf, Object o) {
        try {
            sbuf.append(o.toString());
        } catch (Throwable t) {
            GWT.log("SLF4J: Failed toString() invocation on an object of type ["
                    + o.getClass().getName() + "]", t);
/*
            System.err
                    .println("SLF4J: Failed toString() invocation on an object of type ["
                            + o.getClass().getName() + "]");
            t.printStackTrace();
*/
            sbuf.append("[FAILED toString()]");
        }

    }
 

import com.google.gwt.core.client.GWT; //導入方法依賴的package包/類
@Override
public void onMouseDown(MouseDownEvent event) {

    startX = event.getClientX();
    startY = event.getClientY();

    if (isDisabled() || event.getNativeButton() != NativeEvent.BUTTON_LEFT) {
        return;
    }

    clickTarget = Element.as(event.getNativeEvent().getEventTarget());
    mouseMoveCanceled = false;

    if ((weekGrid.getCalendar().isItemMoveAllowed() && getCalendarItem().isMoveable())
            || (clickTargetsResize() && getCalendarItem().isResizeable())) {

        moveRegistration = addMouseMoveHandler(this);
        setFocus(true);
        try {
            startYrelative = (int) ((double) event.getRelativeY(caption) % slotHeight);
            startXrelative = (event.getRelativeX(weekGrid.getElement())
                    - weekGrid.timebar.getOffsetWidth())
                    % getDateCellWidth();
        } catch (Exception e) {
            GWT.log("Exception calculating relative start position", e);
        }
        mouseMoveStarted = false;
        Style s = getElement().getStyle();
        s.setZIndex(1000);
        startDatetimeFrom = (Date) calendarItem.getStartTime().clone();
        startDatetimeTo = (Date) calendarItem.getEndTime().clone();
        Event.setCapture(getElement());
    }

    // make sure the right cursor is always displayed
    if (clickTargetsResize() && getCalendarItem().isResizeable()) {
        addGlobalResizeStyle();
    }

    /*
     * We need to stop the event propagation or else the WeekGrid range
     * select will kick in
     */
    event.stopPropagation();
    event.preventDefault();
}
 

import com.google.gwt.core.client.GWT; //導入方法依賴的package包/類
@Override
public void onMouseUp(MouseUpEvent event) {
    if (event.getNativeButton() != NativeEvent.BUTTON_LEFT) {
        return;
    }

    if (moveRegistration != null) {
        Event.releaseCapture(getElement());
        moveRegistration.removeHandler();
        moveRegistration = null;
        keyDownHandler.removeHandler();
        keyDownHandler = null;
    }

    Widget w = (Widget) event.getSource();
    if (w == bottomspacer && monthEventMouseDown) {
        GWT.log("Mouse up over bottomspacer");

    } else if (clickedWidget instanceof MonthItemLabel  && monthEventMouseDown) {

        MonthItemLabel mel = (MonthItemLabel) clickedWidget;

        int endX = event.getClientX();
        int endY = event.getClientY();
        int xDiff = 0, yDiff = 0;
        if (startX != -1 && startY != -1) {
            xDiff = startX - endX;
            yDiff = startY - endY;
        }
        startX = -1;
        startY = -1;
        prevDayDiff = 0;
        prevWeekDiff = 0;

        if (xDiff < -3 || xDiff > 3 || yDiff < -3 || yDiff > 3) {
            itemMoved(movingItem);

        } else if (calendar.getItemClickListener() != null) {
            CalendarItem e = getItemByWidget(mel);

            if(e.isClickable())
            calendar.getItemClickListener().itemClick(e);
        }

        movingItem = null;

    } else if (w == this) {
        getMonthGrid().setSelectionReady();

    } else if (w instanceof Label && labelMouseDown) {
        if (calendar.getDateClickListener() != null) {
            calendar.getDateClickListener().dateClick(DateConstants.toRPCDate(date));
        }
    }

    monthEventMouseDown = false;
    labelMouseDown = false;
    clickedWidget = null;
}
 

import com.google.gwt.core.client.GWT; //導入方法依賴的package包/類
public void startCalendarItemDrag(MouseDownEvent event, final MonthItemLabel label) {

        moveRegistration = addMouseMoveHandler(this);
        startX = event.getClientX();
        startY = event.getClientY();
        startYrelative = event.getRelativeY(label.getParent().getElement())
                % getHeigth();
        startXrelative = event.getRelativeX(label.getParent().getElement())
                % getWidth();

        CalendarItem e = getItemByWidget(label);
        dndSourceDateFrom = (Date) e.getStart().clone();
        dndSourceDateTo = (Date) e.getEnd().clone();

        dndSourceStartDateTime = (Date) e.getStartTime().clone();
        dndSourceEndDateTime = (Date) e.getEndTime().clone();

        Event.setCapture(getElement());
        keyDownHandler = addKeyDownHandler(keyDownHandler -> {
            if (keyDownHandler.getNativeKeyCode() == KeyCodes.KEY_ESCAPE) {
                cancelItemDrag(label);
            }
        });

        focus();

        GWT.log("Start drag");
    }
 

import com.google.gwt.core.client.GWT; //導入方法依賴的package包/類
/** {@inheritDoc} */
@Override
public void onUncaughtException(Throwable e) {
  GWT.log(e.getMessage(), e);
}