Java Event.releaseCapture方法代碼示例

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

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

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

    startX = -1;
    startY = -1;
    mouseMoveStarted = false;
    Style s = getElement().getStyle();
    s.setZIndex(1);

    if (!clickTargetsResize()) {

        // check if mouse has moved over threshold of 3 pixels
        boolean mouseMoved = (xDiff < -3 || xDiff > 3 || yDiff < -3 || yDiff > 3);

        if (!weekGrid.getCalendar().isDisabled() && mouseMoved) {
            // Item Move:
            // - calendar must be enabled
            // - calendar must not be in read-only mode
            weekGrid.itemMoved(this);

        } else if (!weekGrid.getCalendar().isDisabled() && getCalendarItem().isClickable()) {
            // Item Click:
            // - calendar must be enabled (read-only is allowed)
            EventTarget et = event.getNativeEvent().getEventTarget();
            Element e = Element.as(et);
            if (e == caption || e == eventContent
                    || e.getParentElement() == caption) {
                if (weekGrid.getCalendar().getItemClickListener() != null) {
                    weekGrid.getCalendar().getItemClickListener().itemClick(calendarItem);
                }
            }
        }

    } else {
        // click targeted resize bar
        removeGlobalResizeStyle();
        if (weekGrid.getCalendar().getItemResizeListener() != null) {
            weekGrid.getCalendar().getItemResizeListener().itemResized(calendarItem);
        }
        dateCell.recalculateItemWidths();
    }
}
 

import com.google.gwt.user.client.Event; //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.user.client.Event; //導入方法依賴的package包/類
protected void cancelItemDrag(MonthItemLabel label) {
    if (moveRegistration != null) {
        // reset position
        if (movingItem == null) {
            movingItem = getItemByWidget(label);
        }

        movingItem.setStart(dndSourceDateFrom);
        movingItem.setEnd(dndSourceDateTo);
        movingItem.setStartTime(dndSourceStartDateTime);
        movingItem.setEndTime(dndSourceEndDateTime);
        calendar.updateItemToMonthGrid(movingItem);

        // reset drag-related properties
        Event.releaseCapture(getElement());
        moveRegistration.removeHandler();
        moveRegistration = null;
        keyDownHandler.removeHandler();
        keyDownHandler = null;
        setFocus(false);
        monthEventMouseDown = false;
        startY = -1;
        startX = -1;
        movingItem = null;
        labelMouseDown = false;
        clickedWidget = null;
    }
}
 

import com.google.gwt.user.client.Event; //導入方法依賴的package包/類
private void cancelMouseMove() {
    mouseMoveCanceled = true;

    // reset and remove everything related to the event handling
    Event.releaseCapture(getElement());
    setFocus(false);

    if (moveRegistration != null) {
        moveRegistration.removeHandler();
        moveRegistration = null;
    }

    mouseMoveStarted = false;
    removeGlobalResizeStyle();

    Style s = getElement().getStyle();
    s.setZIndex(1);

    // reset the position of the event
    int dateCellWidth = getDateCellWidth();
    int dayOffset = startXrelative / dateCellWidth;
    s.clearLeft();

    calendarItem.setStartTime(startDatetimeFrom);
    calendarItem.setEndTime(startDatetimeTo);

    long startFromMinutes = (startDatetimeFrom.getHours() * 60)
            + startDatetimeFrom.getMinutes();
    long range = calendarItem.getRangeInMinutes();

    startFromMinutes = calculateStartFromMinute(startFromMinutes,
            startDatetimeFrom, startDatetimeTo, dayOffset);
    if (startFromMinutes < 0) {
        range += startFromMinutes;
    }

    updatePosition(startFromMinutes, range);

    startY = -1;
    startX = -1;

    // to reset the event width
    ((DateCell) getParent()).recalculateItemWidths();
}
 

import com.google.gwt.user.client.Event; //導入方法依賴的package包/類
@Override
@SuppressWarnings("deprecation")
public void onMouseUp(MouseUpEvent event) {

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

    Event.releaseCapture(getElement());
    setFocus(false);

    // Drag initialized?
    int dragDistance = Math.abs(eventRangeStart - event.getY());
    if (dragDistance > 0 && eventRangeStart >= 0) {
        Element main = getElement();
        if (eventRangeStart > eventRangeStop) {
            if (eventRangeStop <= -1) {
                eventRangeStop = 0;
            }
            int temp = eventRangeStart;
            eventRangeStart = eventRangeStop;
            eventRangeStop = temp;
        }

        NodeList<Node> nodes = main.getChildNodes();

        int slotStart = -1;
        int slotEnd = -1;

        // iterate over all child nodes, until we find first the start,
        // and then the end
        for (int i = 0; i < nodes.getLength(); i++) {
            Element element = (Element) nodes.getItem(i);
            boolean isRangeElement = element.getClassName().contains("v-daterange");

            if (isRangeElement && slotStart == -1) {
                slotStart = i;
                slotEnd = i; // to catch one-slot selections

            } else if (isRangeElement) {
                slotEnd = i;

            } else if (slotStart != -1 && slotEnd != -1) {
                break; // FIXME ! is 'else if' right
            }
        }

        clearSelectionRange();

        int startMinutes = firstHour * 60 + slotStart * 30;
        int endMinutes = (firstHour * 60) + (slotEnd + 1) * 30;
        Date currentDate = getDate();

        if (weekgrid.getCalendar().getRangeSelectListener() != null) {

            SelectionRange weekSelection = new SelectionRange();
            weekSelection.sMin = startMinutes;
            weekSelection.eMin = endMinutes;
            weekSelection.setStartDay(DateConstants.toRPCDate(
                    currentDate.getYear(),
                    currentDate.getMonth(),
                    currentDate.getDate()));

            weekgrid.getCalendar().getRangeSelectListener().rangeSelected(weekSelection);
        }
        eventRangeStart = -1;

    } else {

        // Click event
        eventRangeStart = -1;
        cancelRangeSelect();
    }
}
 

import com.google.gwt.user.client.Event; //導入方法依賴的package包/類
public void cancelRangeSelect() {
    Event.releaseCapture(getElement());
    setFocus(false);

    clearSelectionRange();
}