/*
* Copyright 2000-2014 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.client.ui.calendar.schedule;
import java.util.Date;
import java.util.LinkedList;
import java.util.List;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.EventTarget;
import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.dom.client.Style;
import com.google.gwt.dom.client.Style.Position;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.dom.client.ContextMenuEvent;
import com.google.gwt.event.dom.client.ContextMenuHandler;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyDownEvent;
import com.google.gwt.event.dom.client.KeyDownHandler;
import com.google.gwt.event.dom.client.MouseDownEvent;
import com.google.gwt.event.dom.client.MouseDownHandler;
import com.google.gwt.event.dom.client.MouseMoveEvent;
import com.google.gwt.event.dom.client.MouseMoveHandler;
import com.google.gwt.event.dom.client.MouseUpEvent;
import com.google.gwt.event.dom.client.MouseUpHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.vaadin.client.Util;
import com.vaadin.shared.ui.calendar.DateConstants;
/**
* Internally used by the calendar
*
* @since 7.1
*/
public class DateCellDayEvent extends FocusableHTML implements
MouseDownHandler, MouseUpHandler, MouseMoveHandler, KeyDownHandler,
ContextMenuHandler, HasTooltipKey {
private final DateCell dateCell;
private Element caption = null;
private final Element eventContent;
private CalendarEvent calendarEvent = null;
private HandlerRegistration moveRegistration;
private int startY = -1;
private int startX = -1;
private String moveWidth;
public static final int halfHourInMilliSeconds = 1800 * 1000;
private Date startDatetimeFrom;
private Date startDatetimeTo;
private boolean mouseMoveStarted;
private int top;
private int startYrelative;
private int startXrelative;
private boolean disabled;
private final WeekGrid weekGrid;
private Element topResizeBar;
private Element bottomResizeBar;
private Element clickTarget;
private final Integer eventIndex;
private int slotHeight;
private final List<HandlerRegistration> handlers;
private boolean mouseMoveCanceled;
public DateCellDayEvent(DateCell dateCell, WeekGrid parent,
CalendarEvent event) {
super();
this.dateCell = dateCell;
handlers = new LinkedList<HandlerRegistration>();
setStylePrimaryName("v-calendar-event");
setCalendarEvent(event);
weekGrid = parent;
Style s = getElement().getStyle();
if (event.getStyleName().length() > 0) {
addStyleDependentName(event.getStyleName());
}
s.setPosition(Position.ABSOLUTE);
caption = DOM.createDiv();
caption.addClassName("v-calendar-event-caption");
getElement().appendChild(caption);
eventContent = DOM.createDiv();
eventContent.addClassName("v-calendar-event-content");
getElement().appendChild(eventContent);
if (weekGrid.getCalendar().isEventResizeAllowed()) {
topResizeBar = DOM.createDiv();
bottomResizeBar = DOM.createDiv();
topResizeBar.addClassName("v-calendar-event-resizetop");
bottomResizeBar.addClassName("v-calendar-event-resizebottom");
getElement().appendChild(topResizeBar);
getElement().appendChild(bottomResizeBar);
}
eventIndex = event.getIndex();
}
@Override
protected void onAttach() {
super.onAttach();
handlers.add(addMouseDownHandler(this));
handlers.add(addMouseUpHandler(this));
handlers.add(addKeyDownHandler(this));
handlers.add(addDomHandler(this, ContextMenuEvent.getType()));
}
@Override
protected void onDetach() {
for (HandlerRegistration handler : handlers) {
handler.removeHandler();
}
handlers.clear();
super.onDetach();
}
public void setSlotHeightInPX(int slotHeight) {
this.slotHeight = slotHeight;
}
public void updatePosition(long startFromMinutes, long durationInMinutes) {
if (startFromMinutes < 0) {
startFromMinutes = 0;
}
top = weekGrid.getPixelTopFor((int) startFromMinutes);
getElement().getStyle().setTop(top, Unit.PX);
if (durationInMinutes > 0) {
int heightMinutes = weekGrid.getPixelLengthFor(
(int) startFromMinutes, (int) durationInMinutes);
setHeight(heightMinutes);
} else {
setHeight(-1);
}
boolean multiRowCaption = (durationInMinutes > 30);
updateCaptions(multiRowCaption);
}
public int getTop() {
return top;
}
public void setMoveWidth(int width) {
moveWidth = width + "px";
}
public void setHeight(int h) {
if (h == -1) {
getElement().getStyle().setProperty("height", "");
eventContent.getStyle().setProperty("height", "");
} else {
getElement().getStyle().setHeight(h, Unit.PX);
// FIXME measure the border height (2px) from the DOM
eventContent.getStyle().setHeight(h - 2, Unit.PX);
}
}
/**
* @param bigMode
* If false, event is so small that caption must be in time-row
*/
private void updateCaptions(boolean bigMode) {
String innerHtml;
String escapedCaption = Util.escapeHTML(calendarEvent.getCaption());
String timeAsText = calendarEvent.getTimeAsText();
if (bigMode) {
innerHtml = "<span>" + timeAsText + "</span><br />"
+ escapedCaption;
} else {
innerHtml = "<span>" + timeAsText + "<span>:</span></span> "
+ escapedCaption;
}
caption.setInnerHTML(innerHtml);
eventContent.setInnerHTML("");
}
@Override
public void onKeyDown(KeyDownEvent event) {
int keycode = event.getNativeEvent().getKeyCode();
if (keycode == KeyCodes.KEY_ESCAPE && mouseMoveStarted) {
cancelMouseMove();
}
}
@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().isEventMoveAllowed() || clickTargetsResize()) {
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) calendarEvent.getStartTime().clone();
startDatetimeTo = (Date) calendarEvent.getEndTime().clone();
Event.setCapture(getElement());
}
// make sure the right cursor is always displayed
if (clickTargetsResize()) {
addGlobalResizeStyle();
}
/*
* We need to stop the event propagation or else the WeekGrid range
* select will kick in
*/
event.stopPropagation();
event.preventDefault();
}
@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 = startX - endX;
int 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().isDisabledOrReadOnly() && mouseMoved) {
// Event Move:
// - calendar must be enabled
// - calendar must not be in read-only mode
weekGrid.eventMoved(this);
} else if (!weekGrid.getCalendar().isDisabled()) {
// Event 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().getEventClickListener() != null) {
weekGrid.getCalendar().getEventClickListener()
.eventClick(calendarEvent);
}
}
}
} else { // click targeted resize bar
removeGlobalResizeStyle();
if (weekGrid.getCalendar().getEventResizeListener() != null) {
weekGrid.getCalendar().getEventResizeListener()
.eventResized(calendarEvent);
}
dateCell.recalculateEventWidths();
}
}
@Override
@SuppressWarnings("deprecation")
public void onMouseMove(MouseMoveEvent event) {
if (startY < 0 && startX < 0) {
return;
}
if (isDisabled()) {
Event.releaseCapture(getElement());
mouseMoveStarted = false;
startY = -1;
startX = -1;
removeGlobalResizeStyle();
return;
}
int currentY = event.getClientY();
int currentX = event.getClientX();
int moveY = (currentY - startY);
int moveX = (currentX - startX);
if ((moveY < 5 && moveY > -6) && (moveX < 5 && moveX > -6)) {
return;
}
if (!mouseMoveStarted) {
setWidth(moveWidth);
getElement().getStyle().setMarginLeft(0, Unit.PX);
mouseMoveStarted = true;
}
HorizontalPanel parent = (HorizontalPanel) getParent().getParent();
int relativeX = event.getRelativeX(parent.getElement())
- weekGrid.timebar.getOffsetWidth();
int halfHourDiff = 0;
if (moveY > 0) {
halfHourDiff = (startYrelative + moveY) / slotHeight;
} else {
halfHourDiff = (moveY - startYrelative) / slotHeight;
}
int dateCellWidth = getDateCellWidth();
long dayDiff = 0;
if (moveX >= 0) {
dayDiff = (startXrelative + moveX) / dateCellWidth;
} else {
dayDiff = (moveX - (dateCellWidth - startXrelative))
/ dateCellWidth;
}
int dayOffset = relativeX / dateCellWidth;
// sanity check for right side overflow
int dateCellCount = weekGrid.getDateCellCount();
if (dayOffset >= dateCellCount) {
dayOffset--;
dayDiff--;
}
int dayOffsetPx = calculateDateCellOffsetPx(dayOffset)
+ weekGrid.timebar.getOffsetWidth();
GWT.log("DateCellWidth: " + dateCellWidth + " dayDiff: " + dayDiff
+ " dayOffset: " + dayOffset + " dayOffsetPx: " + dayOffsetPx
+ " startXrelative: " + startXrelative + " moveX: " + moveX);
if (relativeX < 0 || relativeX >= getDatesWidth()) {
return;
}
Style s = getElement().getStyle();
Date from = calendarEvent.getStartTime();
Date to = calendarEvent.getEndTime();
long duration = to.getTime() - from.getTime();
if (!clickTargetsResize()
&& weekGrid.getCalendar().isEventMoveAllowed()) {
long daysMs = dayDiff * DateConstants.DAYINMILLIS;
from.setTime(startDatetimeFrom.getTime() + daysMs);
from.setTime(from.getTime()
+ ((long) halfHourInMilliSeconds * halfHourDiff));
to.setTime((from.getTime() + duration));
calendarEvent.setStartTime(from);
calendarEvent.setEndTime(to);
calendarEvent.setStart(new Date(from.getTime()));
calendarEvent.setEnd(new Date(to.getTime()));
// Set new position for the event
long startFromMinutes = (from.getHours() * 60) + from.getMinutes();
long range = calendarEvent.getRangeInMinutes();
startFromMinutes = calculateStartFromMinute(startFromMinutes, from,
to, dayOffsetPx);
if (startFromMinutes < 0) {
range += startFromMinutes;
}
updatePosition(startFromMinutes, range);
s.setLeft(dayOffsetPx, Unit.PX);
if (weekGrid.getDateCellWidths() != null) {
s.setWidth(weekGrid.getDateCellWidths()[dayOffset], Unit.PX);
} else {
setWidth(moveWidth);
}
} else if (clickTarget == topResizeBar) {
long oldStartTime = startDatetimeFrom.getTime();
long newStartTime = oldStartTime
+ ((long) halfHourInMilliSeconds * halfHourDiff);
if (!isTimeRangeTooSmall(newStartTime, startDatetimeTo.getTime())) {
newStartTime = startDatetimeTo.getTime() - getMinTimeRange();
}
from.setTime(newStartTime);
calendarEvent.setStartTime(from);
calendarEvent.setStart(new Date(from.getTime()));
// Set new position for the event
long startFromMinutes = (from.getHours() * 60) + from.getMinutes();
long range = calendarEvent.getRangeInMinutes();
updatePosition(startFromMinutes, range);
} else if (clickTarget == bottomResizeBar) {
long oldEndTime = startDatetimeTo.getTime();
long newEndTime = oldEndTime
+ ((long) halfHourInMilliSeconds * halfHourDiff);
if (!isTimeRangeTooSmall(startDatetimeFrom.getTime(), newEndTime)) {
newEndTime = startDatetimeFrom.getTime() + getMinTimeRange();
}
to.setTime(newEndTime);
calendarEvent.setEndTime(to);
calendarEvent.setEnd(new Date(to.getTime()));
// Set new position for the event
long startFromMinutes = (startDatetimeFrom.getHours() * 60)
+ startDatetimeFrom.getMinutes();
long range = calendarEvent.getRangeInMinutes();
startFromMinutes = calculateStartFromMinute(startFromMinutes, from,
to, dayOffsetPx);
if (startFromMinutes < 0) {
range += startFromMinutes;
}
updatePosition(startFromMinutes, range);
}
}
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();
calendarEvent.setStartTime(startDatetimeFrom);
calendarEvent.setEndTime(startDatetimeTo);
long startFromMinutes = (startDatetimeFrom.getHours() * 60)
+ startDatetimeFrom.getMinutes();
long range = calendarEvent.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()).recalculateEventWidths();
}
// date methods are not deprecated in GWT
@SuppressWarnings("deprecation")
private long calculateStartFromMinute(long startFromMinutes, Date from,
Date to, int dayOffset) {
boolean eventStartAtDifferentDay = from.getDate() != to.getDate();
if (eventStartAtDifferentDay) {
long minutesOnPrevDay = (getTargetDateByCurrentPosition(dayOffset)
.getTime() - from.getTime()) / DateConstants.MINUTEINMILLIS;
startFromMinutes = -1 * minutesOnPrevDay;
}
return startFromMinutes;
}
/**
* @param dateOffset
* @return the amount of pixels the given date is from the left side
*/
private int calculateDateCellOffsetPx(int dateOffset) {
int dateCellOffset = 0;
int[] dateWidths = weekGrid.getDateCellWidths();
if (dateWidths != null) {
for (int i = 0; i < dateOffset; i++) {
dateCellOffset += dateWidths[i] + 1;
}
} else {
dateCellOffset = dateOffset * weekGrid.getDateCellWidth();
}
return dateCellOffset;
}
/**
* Check if the given time range is too small for events
*
* @param start
* @param end
* @return
*/
private boolean isTimeRangeTooSmall(long start, long end) {
return (end - start) >= getMinTimeRange();
}
/**
* @return the minimum amount of ms that an event must last when resized
*/
private long getMinTimeRange() {
return DateConstants.MINUTEINMILLIS * 30;
}
/**
* Build the string for sending resize events to server
*
* @param event
* @return
*/
private String buildResizeString(CalendarEvent event) {
StringBuilder buffer = new StringBuilder();
buffer.append(event.getIndex());
buffer.append(",");
buffer.append(DateUtil.formatClientSideDate(event.getStart()));
buffer.append("-");
buffer.append(DateUtil.formatClientSideTime(event.getStartTime()));
buffer.append(",");
buffer.append(DateUtil.formatClientSideDate(event.getEnd()));
buffer.append("-");
buffer.append(DateUtil.formatClientSideTime(event.getEndTime()));
return buffer.toString();
}
private Date getTargetDateByCurrentPosition(int left) {
DateCell newParent = (DateCell) weekGrid.content
.getWidget((left / getDateCellWidth()) + 1);
Date targetDate = newParent.getDate();
return targetDate;
}
private int getDateCellWidth() {
return weekGrid.getDateCellWidth();
}
/* Returns total width of all date cells. */
private int getDatesWidth() {
if (weekGrid.width == -1) {
// Undefined width. Needs to be calculated by the known cell
// widths.
int count = weekGrid.content.getWidgetCount() - 1;
return count * getDateCellWidth();
}
return weekGrid.getInternalWidth();
}
/**
* @return true if the current mouse movement is resizing
*/
private boolean clickTargetsResize() {
return weekGrid.getCalendar().isEventResizeAllowed()
&& (clickTarget == topResizeBar || clickTarget == bottomResizeBar);
}
private void addGlobalResizeStyle() {
if (clickTarget == topResizeBar) {
weekGrid.getCalendar().addStyleDependentName("nresize");
} else if (clickTarget == bottomResizeBar) {
weekGrid.getCalendar().addStyleDependentName("sresize");
}
}
private void removeGlobalResizeStyle() {
weekGrid.getCalendar().removeStyleDependentName("nresize");
weekGrid.getCalendar().removeStyleDependentName("sresize");
}
public void setCalendarEvent(CalendarEvent calendarEvent) {
this.calendarEvent = calendarEvent;
}
public CalendarEvent getCalendarEvent() {
return calendarEvent;
}
public void setDisabled(boolean disabled) {
this.disabled = disabled;
}
public boolean isDisabled() {
return disabled;
}
@Override
public void onContextMenu(ContextMenuEvent event) {
if (dateCell.weekgrid.getCalendar().getMouseEventListener() != null) {
event.preventDefault();
event.stopPropagation();
dateCell.weekgrid.getCalendar().getMouseEventListener()
.contextMenu(event, this);
}
}
@Override
public Object getTooltipKey() {
return eventIndex;
}
}