// This code is taken from WSO2 Carbon and is licensed by WSO2, Inc.
// under the Apache License version 2.0 http://www.apache.org/licenses/LICENSE-2.0.html
package org.wso2.carbon.bpel.ui.bpel2svg.impl;
import org.wso2.carbon.bpel.ui.bpel2svg.ActivityInterface;
import org.wso2.carbon.bpel.ui.bpel2svg.BPEL2SVGFactory;
import org.wso2.carbon.bpel.ui.bpel2svg.SVGCoordinates;
import java.util.Iterator;
import org.w3c.dom.Element;
import org.w3c.dom.svg.SVGDocument;
import org.apache.axiom.om.OMElement;
public class FlowImpl extends ActivityImpl implements org.wso2.carbon.bpel.ui.bpel2svg.FlowInterface {
public FlowImpl(String token) {
super(token);
// Set Icon and Size
startIconPath = BPEL2SVGFactory.getInstance().getIconPath(this.getClass().getName());
endIconPath = org.wso2.carbon.bpel.ui.bpel2svg.BPEL2SVGFactory.getInstance().getEndIconPath(this.getClass().getName());
// Set Layout
setVerticalChildLayout(false);
}
public FlowImpl(OMElement omElement) {
super(omElement);
// Set Icon and Size
startIconPath = org.wso2.carbon.bpel.ui.bpel2svg.BPEL2SVGFactory.getInstance().getIconPath(this.getClass().getName());
endIconPath = BPEL2SVGFactory.getInstance().getEndIconPath(this.getClass().getName());
// Set Layout
setVerticalChildLayout(false);
}
public FlowImpl(OMElement omElement, ActivityInterface parent) {
super(omElement);
setParent(parent);
// Set Icon and Size
startIconPath = BPEL2SVGFactory.getInstance().getIconPath(this.getClass().getName());
endIconPath = BPEL2SVGFactory.getInstance().getEndIconPath(this.getClass().getName());
// setVerticalChildLayout(false);
}
@Override
public String getId() {
return getName(); // + "-Flow";
}
@Override
public String getEndTag() {
return org.wso2.carbon.bpel.ui.bpel2svg.BPEL2SVGFactory.FLOW_END_TAG;
}
@Override
public org.wso2.carbon.bpel.ui.bpel2svg.SVGDimension getDimensions() {
if (dimensions == null) {
int width = 0;
int height = 0;
dimensions = new org.wso2.carbon.bpel.ui.bpel2svg.SVGDimension(width, height);
org.wso2.carbon.bpel.ui.bpel2svg.SVGDimension subActivityDim = null;
ActivityInterface activity = null;
Iterator<org.wso2.carbon.bpel.ui.bpel2svg.ActivityInterface> itr = getSubActivities().iterator();
while (itr.hasNext()) {
activity = itr.next();
subActivityDim = activity.getDimensions();
if (subActivityDim.getHeight() > height) {
height += subActivityDim.getHeight();
}
width += subActivityDim.getWidth();
}
height += (getYSpacing() * 2) + getStartIconHeight() + getEndIconHeight();
width += getXSpacing();
dimensions.setWidth(width);
dimensions.setHeight(height);
}
return dimensions;
}
@Override
public void layout(int startXLeft, int startYTop) {
if (layoutManager.isVerticalLayout()) {
layoutVertical(startXLeft, startYTop);
} else {
layoutHorizontal(startXLeft, startYTop);
}
}
public void layoutVertical(int startXLeft, int startYTop) {
int centreOfMyLayout = startXLeft + (dimensions.getWidth() / 2);
int xLeft = centreOfMyLayout - (getStartIconWidth() / 2);
int yTop = startYTop + (getYSpacing() / 2);
int endXLeft = centreOfMyLayout - (getEndIconWidth() / 2);
int endYTop = startYTop + dimensions.getHeight() - getEndIconHeight() - (getYSpacing() / 2);
ActivityInterface activity = null;
Iterator<org.wso2.carbon.bpel.ui.bpel2svg.ActivityInterface> itr = getSubActivities().iterator();
int childYTop = yTop + getStartIconHeight() + (getYSpacing() / 2);
int childXLeft = startXLeft + (getXSpacing() / 2);
while (itr.hasNext()) {
activity = itr.next();
// childYTop += centreOfMyLayout - (activity.getDimensions().getHeight() / 2);
activity.layout(childXLeft, childYTop);
childXLeft += activity.getDimensions().getWidth();
}
// Set the values
setStartIconXLeft(xLeft);
setStartIconYTop(yTop);
setEndIconXLeft(endXLeft);
setEndIconYTop(endYTop);
setStartIconTextXLeft(startXLeft + BOX_MARGIN);
setStartIconTextYTop(startYTop + BOX_MARGIN + BPEL2SVGFactory.TEXT_ADJUST);
getDimensions().setXLeft(startXLeft);
getDimensions().setYTop(startYTop);
}
private void layoutHorizontal(int startXLeft, int startYTop) {
int centreOfMyLayout = startYTop + (dimensions.getHeight() / 2);
int xLeft = startXLeft + (getYSpacing() / 2);
int yTop = centreOfMyLayout - (getStartIconHeight() / 2);
int endXLeft = startXLeft + dimensions.getWidth() - getEndIconWidth() - (getYSpacing() / 2);
int endYTop = centreOfMyLayout - (getEndIconHeight() / 2);
org.wso2.carbon.bpel.ui.bpel2svg.ActivityInterface activity = null;
Iterator<ActivityInterface> itr = getSubActivities().iterator();
int childXLeft = xLeft + getStartIconWidth() + (getYSpacing() / 2);
int childYTop = startYTop + (getXSpacing() / 2);
while (itr.hasNext()) {
activity = itr.next();
// childXLeft = centreOfMyLayout - activity.getDimensions().getWidth() / 2;
activity.layout(childXLeft, childYTop);
childYTop += activity.getDimensions().getHeight();
}
// Set the values
setStartIconXLeft(xLeft);
setStartIconYTop(yTop);
setEndIconXLeft(endXLeft);
setEndIconYTop(endYTop);
setStartIconTextXLeft(startXLeft + BOX_MARGIN);
setStartIconTextYTop(startYTop + BOX_MARGIN + BPEL2SVGFactory.TEXT_ADJUST);
getDimensions().setXLeft(startXLeft);
getDimensions().setYTop(startYTop);
}
@Override
public SVGCoordinates getEntryArrowCoords() {
int xLeft = 0;
int yTop = 0;
if (layoutManager.isVerticalLayout()) {
xLeft = getStartIconXLeft() + (getStartIconWidth() / 2);
yTop = getStartIconYTop();
} else {
xLeft = getStartIconXLeft();
yTop = getStartIconYTop() + (getStartIconHeight() / 2);
}
org.wso2.carbon.bpel.ui.bpel2svg.SVGCoordinates coords = new SVGCoordinates(xLeft, yTop);
return coords;
}
@Override
public SVGCoordinates getExitArrowCoords() {
int xLeft = 0;
int yTop = 0;
if (layoutManager.isVerticalLayout()) {
xLeft = getEndIconXLeft() + (getEndIconWidth() / 2);
yTop = getEndIconYTop() + getEndIconHeight();
} else {
xLeft = getEndIconXLeft() + getEndIconWidth();
yTop = getEndIconYTop() + (getEndIconHeight() / 2);
}
SVGCoordinates coords = new SVGCoordinates(xLeft, yTop);
return coords;
}
protected SVGCoordinates getStartIconExitArrowCoords() {
int xLeft = 0;
int yTop = 0;
if (layoutManager.isVerticalLayout()) {
xLeft = getStartIconXLeft() + (getStartIconWidth() / 2);
yTop = getStartIconYTop() + getStartIconHeight();
} else {
xLeft = getStartIconXLeft() + getStartIconWidth();
yTop = getStartIconYTop() + (getStartIconHeight() / 2);
}
SVGCoordinates coords = new SVGCoordinates(xLeft, yTop);
return coords;
}
protected SVGCoordinates getEndIconEntryArrowCoords() {
int xLeft = 0;
int yTop = 0;
if (layoutManager.isVerticalLayout()) {
xLeft = getEndIconXLeft() + (getEndIconWidth() / 2);
yTop = getEndIconYTop();
} else {
xLeft = getEndIconXLeft();
yTop = getEndIconYTop() + (getEndIconHeight() / 2);
}
SVGCoordinates coords = new SVGCoordinates(xLeft, yTop);
return coords;
}
@Override
public Element getSVGString(SVGDocument doc) {
Element group = null;
group = doc.createElementNS("http://www.w3.org/2000/svg", "g");
group.setAttributeNS(null, "id", getLayerId());
// Check if Layer & Opacity required
if (isAddOpacity()) {
group.setAttributeNS(null, "style", "opacity:" + getOpacity());
}
group.appendChild(getBoxDefinition(doc));
group.appendChild(getImageDefinition(doc));
group.appendChild(getStartImageText(doc));
// Process Sub Activities
group.appendChild(getSubActivitiesSVGString(doc));
group.appendChild(getEndImageDefinition(doc));
//Add Arrow
group.appendChild(getArrows(doc));
return group;
}
protected Element getArrows(SVGDocument doc) {
Element subGroup = null;
subGroup = doc.createElementNS("http://www.w3.org/2000/svg", "g");
//the below code segment is commented inorder to have the Arrow style of Flow
/*if (subActivities != null) {
org.wso2.carbon.bpel.ui.bpel2svg.ActivityInterface activity = null;
String id = null;
SVGCoordinates myStartCoords = getStartIconExitArrowCoords();
SVGCoordinates myExitCoords = getEndIconEntryArrowCoords();
org.wso2.carbon.bpel.ui.bpel2svg.SVGCoordinates activityExitCoords = null;
SVGCoordinates activityEntryCoords = null;
Iterator<ActivityInterface> itr = subActivities.iterator();
while (itr.hasNext()) {
activity = itr.next();
activityExitCoords = activity.getExitArrowCoords();
activityEntryCoords = activity.getEntryArrowCoords();
subGroup.appendChild(getArrowDefinition(doc, myStartCoords.getXLeft(), myStartCoords.getYTop(), activityEntryCoords.getXLeft(), activityEntryCoords.getYTop(), id));
subGroup.appendChild(getArrowDefinition(doc, activityExitCoords.getXLeft(), activityExitCoords.getYTop(), myExitCoords.getXLeft(), myExitCoords.getYTop(), id));
}
} */
//pls use a function to find the closest activity to the flow start
//as well as the closest activity to the flow end;
SVGCoordinates myStartCoords = getStartIconExitArrowCoords();
SVGCoordinates myExitCoords = getEndIconEntryArrowCoords();
subGroup.appendChild(getArrowDefinition(doc, myStartCoords.getXLeft(), myStartCoords.getYTop(),
myStartCoords.getXLeft(), (myStartCoords.getYTop() + 30), "Flow_Top", true));
subGroup.appendChild(getArrowDefinition(doc, (myStartCoords.getXLeft() - dimensions.getWidth()/2 + getXSpacing()),
(myStartCoords.getYTop() + 30), (myStartCoords.getXLeft() + dimensions.getWidth()/2 - getXSpacing()),
(myStartCoords.getYTop() + 30), "Flow_TopH", true));
subGroup.appendChild(getArrowDefinition(doc, (myStartCoords.getXLeft() - dimensions.getWidth()/2 + getXSpacing()),
(myExitCoords.getYTop() - 20), (myStartCoords.getXLeft() + dimensions.getWidth()/2 - getXSpacing()),
(myExitCoords.getYTop() - 20), "Flow_DownH", true));
subGroup.appendChild(getArrowDefinition(doc, myExitCoords.getXLeft(), myExitCoords.getYTop() - 20,
myExitCoords.getXLeft(), myExitCoords.getYTop(), "Flow_Top", false));
return subGroup;
}
public Element getArrowDefinition(SVGDocument doc, int startX, int startY, int endX, int endY, String id, boolean to) { //here we have to find whether
Element path = doc.createElementNS("http://www.w3.org/2000/svg", "path");
if ((startX == endX) || (startY == endY)) {
path.setAttributeNS(null, "d", "M " + startX + "," + startY + " L " + endX + "," + endY);
}
else {
if (to) {
if(layoutManager.isVerticalLayout()){
path.setAttributeNS(null, "d", "M " + startX + "," + startY + " L " + startX + "," +
((startY + 2 * endY) / 3) + " L " + endX + "," + ((startY + 2 * endY) / 3)); //use constants for these propotions
}else{
path.setAttributeNS(null, "d", "M " + startX + "," + startY + " L " + ((startX + 1* endX) / 2) +
"," + startY + " L " + ((startX + 1* endX) / 2) + "," + endY); //use constants for these propotions
}
}
else {
if(layoutManager.isVerticalLayout()){
path.setAttributeNS(null, "d", "M " + startX + "," + ((startY + 2 * endY) / 3) + " L " + endX + "," + ((startY + 2 * endY) / 3) + " L " + endX + "," + endY); //use constants for these propotions
}else{
path.setAttributeNS(null, "d", "M " + ((startX + 1* endX) / 2) + "," + startY + " L " + ((startX + 1* endX) / 2) + "," + endY + " L " + endX + "," + endY); //use constants for these propotions
}
}
}
path.setAttributeNS(null, "id", id);
path.setAttributeNS(null, "style", getArrowStyle(to));
return path;
}
private String getArrowStyle(boolean to) {
if (to) {
String largeArrowStr = "fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1.0;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1";
String mediumArrowStr = "fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1.0;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1";
if (isLargeArrow()) {
return largeArrowStr;
} else {
return mediumArrowStr;
}
}
else {
String largeArrowStr = "fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1.0;stroke-linecap:butt;stroke-linejoin:round;marker-end:url(#Arrow1Lend);stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1";
String mediumArrowStr = "fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1.0;stroke-linecap:butt;stroke-linejoin:round;marker-end:url(#Arrow1Mend);stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1";
if (isLargeArrow()) {
return largeArrowStr;
} else {
return mediumArrowStr;
}
}
}
@Override
public boolean isAddOpacity() {
return isAddCompositeActivityOpacity();
}
@Override
public double getOpacity() {
return getCompositeOpacity();
}
}