/*
* 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.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.dom.client.Node;
import com.google.gwt.dom.client.NodeList;
import com.google.gwt.dom.client.Style.Display;
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.Widget;
import com.vaadin.client.Util;
public class DateCell extends FocusableComplexPanel implements
MouseDownHandler, MouseMoveHandler, MouseUpHandler, KeyDownHandler,
ContextMenuHandler {
private static final String DRAGEMPHASISSTYLE = " dragemphasis";
private Date date;
private int width;
private int eventRangeStart = -1;
private int eventRangeStop = -1;
final WeekGrid weekgrid;
private boolean disabled = false;
private int height;
private final Element[] slotElements;
private final List<DateCellSlot> slots = new ArrayList<DateCell.DateCellSlot>();
private int[] slotElementHeights;
private int startingSlotHeight;
private Date today;
private Element todaybar;
private final List<HandlerRegistration> handlers;
private final int numberOfSlots;
private final int firstHour;
private final int lastHour;
public class DateCellSlot extends Widget {
private final DateCell cell;
private final Date from;
private final Date to;
public DateCellSlot(DateCell cell, Date from, Date to) {
setElement(DOM.createDiv());
getElement().setInnerHTML(" ");
this.cell = cell;
this.from = from;
this.to = to;
}
public Date getFrom() {
return from;
}
public Date getTo() {
return to;
}
public DateCell getParentCell() {
return cell;
}
}
public DateCell(WeekGrid parent, Date date) {
weekgrid = parent;
Element mainElement = DOM.createDiv();
setElement(mainElement);
makeFocusable();
setDate(date);
addStyleName("v-calendar-day-times");
handlers = new LinkedList<HandlerRegistration>();
// 2 slots / hour
firstHour = weekgrid.getFirstHour();
lastHour = weekgrid.getLastHour();
numberOfSlots = (lastHour - firstHour + 1) * 2;
long slotTime = Math.round(((lastHour - firstHour + 1) * 3600000.0)
/ numberOfSlots);
slotElements = new Element[numberOfSlots];
slotElementHeights = new int[numberOfSlots];
slots.clear();
long start = getDate().getTime() + firstHour * 3600000;
long end = start + slotTime;
for (int i = 0; i < numberOfSlots; i++) {
DateCellSlot slot = new DateCellSlot(this, new Date(start),
new Date(end));
if (i % 2 == 0) {
slot.setStyleName("v-datecellslot-even");
} else {
slot.setStyleName("v-datecellslot");
}
Event.sinkEvents(slot.getElement(), Event.MOUSEEVENTS);
mainElement.appendChild(slot.getElement());
slotElements[i] = slot.getElement();
slots.add(slot);
start = end;
end = start + slotTime;
}
// Sink events for tooltip handling
Event.sinkEvents(mainElement, Event.MOUSEEVENTS);
}
public int getFirstHour() {
return firstHour;
}
public int getLastHour() {
return lastHour;
}
@Override
protected void onAttach() {
super.onAttach();
handlers.add(addHandler(this, MouseDownEvent.getType()));
handlers.add(addHandler(this, MouseUpEvent.getType()));
handlers.add(addHandler(this, MouseMoveEvent.getType()));
handlers.add(addDomHandler(this, ContextMenuEvent.getType()));
handlers.add(addKeyDownHandler(this));
}
@Override
protected void onDetach() {
for (HandlerRegistration handler : handlers) {
handler.removeHandler();
}
handlers.clear();
super.onDetach();
}
public int getSlotIndex(Element slotElement) {
for (int i = 0; i < slotElements.length; i++) {
if (slotElement == slotElements[i]) {
return i;
}
}
throw new IllegalArgumentException("Element not found in this DateCell");
}
public DateCellSlot getSlot(int index) {
return slots.get(index);
}
public int getNumberOfSlots() {
return numberOfSlots;
}
public void setTimeBarWidth(int timebarWidth) {
todaybar.getStyle().setWidth(timebarWidth, Unit.PX);
}
/**
* @param isHorizontalSized
* if true, this DateCell is sized with CSS and not via
* {@link #setWidthPX(int)}
*/
public void setHorizontalSized(boolean isHorizontalSized) {
if (isHorizontalSized) {
addStyleDependentName("Hsized");
width = getOffsetWidth()
- Util.measureHorizontalBorder(getElement());
// Update moveWidth for any DateCellDayEvent child
updateEventCellsWidth();
recalculateEventWidths();
} else {
removeStyleDependentName("Hsized");
}
}
/**
* @param isVerticalSized
* if true, this DateCell is sized with CSS and not via
* {@link #setHeightPX(int)}
*/
public void setVerticalSized(boolean isVerticalSized) {
if (isVerticalSized) {
addStyleDependentName("Vsized");
// recalc heights&size for events. all other height sizes come
// from css
startingSlotHeight = slotElements[0].getOffsetHeight();
// Update slotHeight for each DateCellDayEvent child
updateEventCellsHeight();
recalculateEventPositions();
if (isToday()) {
recalculateTimeBarPosition();
}
} else {
removeStyleDependentName("Vsized");
}
}
public void setDate(Date date) {
this.date = date;
}
public void setWidthPX(int cellWidth) {
width = cellWidth;
setWidth(cellWidth + "px");
recalculateEventWidths();
}
public void setHeightPX(int height, int[] cellHeights) {
this.height = height;
slotElementHeights = cellHeights;
setHeight(height + "px");
recalculateCellHeights();
recalculateEventPositions();
if (today != null) {
recalculateTimeBarPosition();
}
}
// date methods are not deprecated in GWT
@SuppressWarnings("deprecation")
private void recalculateTimeBarPosition() {
int h = today.getHours();
int m = today.getMinutes();
if (h >= firstHour && h <= lastHour) {
int pixelTop = weekgrid.getPixelTopFor(m + 60 * h);
todaybar.getStyle().clearDisplay();
todaybar.getStyle().setTop(pixelTop, Unit.PX);
} else {
todaybar.getStyle().setDisplay(Display.NONE);
}
}
private void recalculateEventPositions() {
for (int i = 0; i < getWidgetCount(); i++) {
DateCellDayEvent dayEvent = (DateCellDayEvent) getWidget(i);
updatePositionFor(dayEvent, getDate(), dayEvent.getCalendarEvent());
}
}
public void recalculateEventWidths() {
List<DateCellGroup> groups = new ArrayList<DateCellGroup>();
int count = getWidgetCount();
List<Integer> handled = new ArrayList<Integer>();
// Iterate through all events and group them. Events that overlaps
// with each other, are added to the same group.
for (int i = 0; i < count; i++) {
if (handled.contains(i)) {
continue;
}
DateCellGroup curGroup = getOverlappingEvents(i);
handled.addAll(curGroup.getItems());
boolean newGroup = true;
// No need to check other groups, if size equals the count
if (curGroup.getItems().size() != count) {
// Check other groups. When the whole group overlaps with
// other group, the group is merged to the other.
for (DateCellGroup g : groups) {
if (WeekGridMinuteTimeRange.doesOverlap(
curGroup.getDateRange(), g.getDateRange())) {
newGroup = false;
updateGroup(g, curGroup);
}
}
} else {
if (newGroup) {
groups.add(curGroup);
}
break;
}
if (newGroup) {
groups.add(curGroup);
}
}
drawDayEvents(groups);
}
private void recalculateCellHeights() {
startingSlotHeight = height / numberOfSlots;
for (int i = 0; i < slotElements.length; i++) {
slotElements[i].getStyle()
.setHeight(slotElementHeights[i], Unit.PX);
}
updateEventCellsHeight();
}
public int getSlotHeight() {
return startingSlotHeight;
}
public int getSlotBorder() {
return Util.measureVerticalBorder(slotElements[0]);
}
private void drawDayEvents(List<DateCellGroup> groups) {
for (DateCellGroup g : groups) {
int col = 0;
int colCount = 0;
List<Integer> order = new ArrayList<Integer>();
Map<Integer, Integer> columns = new HashMap<Integer, Integer>();
for (Integer eventIndex : g.getItems()) {
DateCellDayEvent d = (DateCellDayEvent) getWidget(eventIndex);
d.setMoveWidth(width);
int freeSpaceCol = findFreeColumnSpaceOnLeft(
new WeekGridMinuteTimeRange(d.getCalendarEvent()
.getStartTime(), d.getCalendarEvent()
.getEndTime()), order, columns);
if (freeSpaceCol >= 0) {
col = freeSpaceCol;
columns.put(eventIndex, col);
int newOrderindex = 0;
for (Integer i : order) {
if (columns.get(i) >= col) {
newOrderindex = order.indexOf(i);
break;
}
}
order.add(newOrderindex, eventIndex);
} else {
// New column
col = colCount++;
columns.put(eventIndex, col);
order.add(eventIndex);
}
}
// Update widths and left position
int eventWidth = (width / colCount);
for (Integer index : g.getItems()) {
DateCellDayEvent d = (DateCellDayEvent) getWidget(index);
d.getElement()
.getStyle()
.setMarginLeft((eventWidth * columns.get(index)),
Unit.PX);
d.setWidth(eventWidth + "px");
d.setSlotHeightInPX(getSlotHeight());
}
}
}
private int findFreeColumnSpaceOnLeft(WeekGridMinuteTimeRange dateRange,
List<Integer> order, Map<Integer, Integer> columns) {
int freeSpot = -1;
int skipIndex = -1;
for (Integer eventIndex : order) {
int col = columns.get(eventIndex);
if (col == skipIndex) {
continue;
}
if (freeSpot != -1 && freeSpot != col) {
// Free spot found
return freeSpot;
}
DateCellDayEvent d = (DateCellDayEvent) getWidget(eventIndex);
WeekGridMinuteTimeRange nextRange = new WeekGridMinuteTimeRange(d
.getCalendarEvent().getStartTime(), d.getCalendarEvent()
.getEndTime());
if (WeekGridMinuteTimeRange.doesOverlap(dateRange, nextRange)) {
skipIndex = col;
freeSpot = -1;
} else {
freeSpot = col;
}
}
return freeSpot;
}
/* Update top and bottom date range values. Add new index to the group. */
private void updateGroup(DateCellGroup targetGroup, DateCellGroup byGroup) {
Date newStart = targetGroup.getStart();
Date newEnd = targetGroup.getEnd();
if (byGroup.getStart().before(targetGroup.getStart())) {
newStart = byGroup.getEnd();
}
if (byGroup.getStart().after(targetGroup.getEnd())) {
newStart = byGroup.getStart();
}
targetGroup.setDateRange(new WeekGridMinuteTimeRange(newStart, newEnd));
for (Integer index : byGroup.getItems()) {
if (!targetGroup.getItems().contains(index)) {
targetGroup.add(index);
}
}
}
/**
* Returns all overlapping DayEvent indexes in the Group. Including the
* target.
*
* @param targetIndex
* Index of DayEvent in the current DateCell widget.
* @return Group that contains all Overlapping DayEvent indexes
*/
public DateCellGroup getOverlappingEvents(int targetIndex) {
DateCellGroup g = new DateCellGroup(targetIndex);
int count = getWidgetCount();
DateCellDayEvent target = (DateCellDayEvent) getWidget(targetIndex);
WeekGridMinuteTimeRange targetRange = new WeekGridMinuteTimeRange(
target.getCalendarEvent().getStartTime(), target
.getCalendarEvent().getEndTime());
Date groupStart = targetRange.getStart();
Date groupEnd = targetRange.getEnd();
for (int i = 0; i < count; i++) {
if (targetIndex == i) {
continue;
}
DateCellDayEvent d = (DateCellDayEvent) getWidget(i);
WeekGridMinuteTimeRange nextRange = new WeekGridMinuteTimeRange(d
.getCalendarEvent().getStartTime(), d.getCalendarEvent()
.getEndTime());
if (WeekGridMinuteTimeRange.doesOverlap(targetRange, nextRange)) {
g.add(i);
// Update top & bottom values to the greatest
if (nextRange.getStart().before(targetRange.getStart())) {
groupStart = targetRange.getStart();
}
if (nextRange.getEnd().after(targetRange.getEnd())) {
groupEnd = targetRange.getEnd();
}
}
}
g.setDateRange(new WeekGridMinuteTimeRange(groupStart, groupEnd));
return g;
}
public Date getDate() {
return date;
}
public void addEvent(Date targetDay, CalendarEvent calendarEvent) {
Element main = getElement();
DateCellDayEvent dayEvent = new DateCellDayEvent(this, weekgrid,
calendarEvent);
dayEvent.setSlotHeightInPX(getSlotHeight());
dayEvent.setDisabled(isDisabled());
if (startingSlotHeight > 0) {
updatePositionFor(dayEvent, targetDay, calendarEvent);
}
add(dayEvent, main);
}
// date methods are not deprecated in GWT
@SuppressWarnings("deprecation")
private void updatePositionFor(DateCellDayEvent dayEvent, Date targetDay,
CalendarEvent calendarEvent) {
if (shouldDisplay(calendarEvent)) {
dayEvent.getElement().getStyle().clearDisplay();
Date fromDt = calendarEvent.getStartTime();
int h = fromDt.getHours();
int m = fromDt.getMinutes();
long range = calendarEvent.getRangeInMinutesForDay(targetDay);
boolean onDifferentDays = calendarEvent.isTimeOnDifferentDays();
if (onDifferentDays) {
if (calendarEvent.getStart().compareTo(targetDay) != 0) {
// Current day slot is for the end date and all in-between
// days. Lets fix also the start & end times.
h = 0;
m = 0;
}
}
int startFromMinutes = (h * 60) + m;
dayEvent.updatePosition(startFromMinutes, range);
} else {
dayEvent.getElement().getStyle().setDisplay(Display.NONE);
}
}
public void addEvent(DateCellDayEvent dayEvent) {
Element main = getElement();
int index = 0;
List<CalendarEvent> events = new ArrayList<CalendarEvent>();
// events are the only widgets in this panel
// slots are just elements
for (; index < getWidgetCount(); index++) {
DateCellDayEvent dc = (DateCellDayEvent) getWidget(index);
dc.setDisabled(isDisabled());
events.add(dc.getCalendarEvent());
}
events.add(dayEvent.getCalendarEvent());
index = 0;
for (CalendarEvent e : weekgrid.getCalendar().sortEventsByDuration(
events)) {
if (e.equals(dayEvent.getCalendarEvent())) {
break;
}
index++;
}
this.insert(dayEvent, main, index, true);
}
public void removeEvent(DateCellDayEvent dayEvent) {
remove(dayEvent);
}
/**
*
* @param event
* @return
*
* This method is not necessary in the long run.. Or here can be
* various types of implementations..
*/
// Date methods not deprecated in GWT
@SuppressWarnings("deprecation")
private boolean shouldDisplay(CalendarEvent event) {
boolean display = true;
if (event.isTimeOnDifferentDays()) {
display = true;
} else { // only in case of one-day event we are able not to display
// event
// which is placed in unpublished parts on calendar
Date eventStart = event.getStartTime();
Date eventEnd = event.getEndTime();
int eventStartHours = eventStart.getHours();
int eventEndHours = eventEnd.getHours();
display = !(eventEndHours < firstHour || eventStartHours > lastHour);
}
return display;
}
@Override
public void onKeyDown(KeyDownEvent event) {
int keycode = event.getNativeEvent().getKeyCode();
if (keycode == KeyCodes.KEY_ESCAPE && eventRangeStart > -1) {
cancelRangeSelect();
}
}
@Override
public void onMouseDown(MouseDownEvent event) {
if (event.getNativeButton() == NativeEvent.BUTTON_LEFT) {
Element e = Element.as(event.getNativeEvent().getEventTarget());
if (e.getClassName().contains("reserved") || isDisabled()
|| !weekgrid.getParentCalendar().isRangeSelectAllowed()) {
eventRangeStart = -1;
} else {
eventRangeStart = event.getY();
eventRangeStop = eventRangeStart;
Event.setCapture(getElement());
setFocus(true);
}
}
}
@Override
@SuppressWarnings("deprecation")
public void onMouseUp(MouseUpEvent event) {
if (event.getNativeButton() != NativeEvent.BUTTON_LEFT) {
return;
}
Event.releaseCapture(getElement());
setFocus(false);
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;
}
}
clearSelectionRange();
int startMinutes = firstHour * 60 + slotStart * 30;
int endMinutes = (firstHour * 60) + (slotEnd + 1) * 30;
Date currentDate = getDate();
String yr = (currentDate.getYear() + 1900) + "-"
+ (currentDate.getMonth() + 1) + "-"
+ currentDate.getDate();
if (weekgrid.getCalendar().getRangeSelectListener() != null) {
weekgrid.getCalendar()
.getRangeSelectListener()
.rangeSelected(
yr + ":" + startMinutes + ":" + endMinutes);
}
eventRangeStart = -1;
} else {
// Click event
eventRangeStart = -1;
cancelRangeSelect();
}
}
@Override
public void onMouseMove(MouseMoveEvent event) {
if (event.getNativeButton() != NativeEvent.BUTTON_LEFT) {
return;
}
if (eventRangeStart >= 0) {
int newY = event.getY();
int fromY = 0;
int toY = 0;
if (newY < eventRangeStart) {
fromY = newY;
toY = eventRangeStart;
} else {
fromY = eventRangeStart;
toY = newY;
}
Element main = getElement();
eventRangeStop = newY;
NodeList<Node> nodes = main.getChildNodes();
for (int i = 0; i < nodes.getLength(); i++) {
Element c = (Element) nodes.getItem(i);
if (todaybar != c) {
int elemStart = c.getOffsetTop();
int elemStop = elemStart + getSlotHeight();
if (elemStart >= fromY && elemStart <= toY) {
c.addClassName("v-daterange");
} else if (elemStop >= fromY && elemStop <= toY) {
c.addClassName("v-daterange");
} else if (elemStop >= fromY && elemStart <= toY) {
c.addClassName("v-daterange");
} else {
c.removeClassName("v-daterange");
}
}
}
}
event.preventDefault();
}
public void cancelRangeSelect() {
Event.releaseCapture(getElement());
setFocus(false);
clearSelectionRange();
}
private void clearSelectionRange() {
if (eventRangeStart > -1) {
// clear all "selected" class names
Element main = getElement();
NodeList<Node> nodes = main.getChildNodes();
for (int i = 0; i <= 47; i++) {
Element c = (Element) nodes.getItem(i);
if (c == null) {
continue;
}
c.removeClassName("v-daterange");
}
eventRangeStart = -1;
}
}
public void setToday(Date today, int width) {
this.today = today;
addStyleDependentName("today");
Element lastChild = (Element) getElement().getLastChild();
if (lastChild.getClassName().equals("v-calendar-current-time")) {
todaybar = lastChild;
} else {
todaybar = DOM.createDiv();
todaybar.setClassName("v-calendar-current-time");
getElement().appendChild(todaybar);
}
if (width != -1) {
todaybar.getStyle().setWidth(width, Unit.PX);
}
// position is calculated later, when we know the cell heights
}
public Element getTodaybarElement() {
return todaybar;
}
public void setDisabled(boolean disabled) {
this.disabled = disabled;
}
public boolean isDisabled() {
return disabled;
}
public void setDateColor(String styleName) {
this.setStyleName("v-calendar-datecell " + styleName);
}
public boolean isToday() {
return today != null;
}
/**
* @deprecated As of 7.2, call or override
* {@link #addEmphasisStyle(Element)} instead
*/
@Deprecated
public void addEmphasisStyle(com.google.gwt.user.client.Element elementOver) {
String originalStylename = getStyleName(elementOver);
setStyleName(elementOver, originalStylename + DRAGEMPHASISSTYLE);
}
/**
* @since 7.2
*/
public void addEmphasisStyle(Element elementOver) {
addEmphasisStyle(DOM.asOld(elementOver));
}
/**
* @deprecated As of 7.2, call or override
* {@link #removeEmphasisStyle(Element)} instead
*/
@Deprecated
public void removeEmphasisStyle(
com.google.gwt.user.client.Element elementOver) {
String originalStylename = getStyleName(elementOver);
setStyleName(
elementOver,
originalStylename.substring(0, originalStylename.length()
- DRAGEMPHASISSTYLE.length()));
}
/**
* @since 7.2
*/
public void removeEmphasisStyle(Element elementOver) {
removeEmphasisStyle(DOM.asOld(elementOver));
}
@Override
public void onContextMenu(ContextMenuEvent event) {
if (weekgrid.getCalendar().getMouseEventListener() != null) {
event.preventDefault();
event.stopPropagation();
weekgrid.getCalendar().getMouseEventListener()
.contextMenu(event, DateCell.this);
}
}
private void updateEventCellsWidth() {
for (Widget widget : getChildren()) {
if (widget instanceof DateCellDayEvent) {
((DateCellDayEvent) widget).setMoveWidth(width);
}
}
}
private void updateEventCellsHeight() {
for (Widget widget : getChildren()) {
if (widget instanceof DateCellDayEvent) {
((DateCellDayEvent) widget).setSlotHeightInPX(getSlotHeight());
}
}
}
}