Examples of org.w3c.dom.Element

org.w3c.dom.Element
The Element interface represents an element in an HTML or XML document. Elements may have attributes associated with them; since the Element interface inherits from Node , the generic Node interface attribute attributes may be used to retrieve the set of all attributes for an element. There are methods on the Element interface to retrieve either an Attr object by name or an attribute value by name. In XML, where an attribute value may contain entity references, an Attr object should be retrieved to examine the possibly fairly complex sub-tree representing the attribute value. On the other hand, in HTML, where all attributes have simple string values, methods to directly access an attribute value can safely be used as a convenience. In DOM Level 2, the method normalize is inherited from the Node interface where it was moved.

        return subElement;
    }


    protected Element getImageDefinition(SVGDocument doc, String imgPath, int imgXLeft, int imgYTop,
                                         int imgWidth, int imgHeight, String id) {
        Element group = null;
        group = doc.createElementNS("http://www.w3.org/2000/svg", "g");
        group.setAttributeNS(null, "id", getLayerId());


        if (getStartIconPath() != null) {         // TODO looks like redundent, imgPath in method arguments
            //if (isAddIconOpacity() && !isAddSimpleActivityOpacity()) {
                group.setAttributeNS(null, "style", "opacity:" + getIconOpacity(getState()));
            //}
            Element image = doc.createElementNS("http://www.w3.org/2000/svg", "image");
            image.setAttributeNS(null, "xlink:href", imgPath);
            //image.setAttributeNS(null, "transform", BPEL2SVGIcons.TRANSFORMATION_MATRIX);
            image.setAttributeNS(null, "x", String.valueOf(imgXLeft));
            image.setAttributeNS(null, "y", String.valueOf(imgYTop));
            image.setAttributeNS(null, "width", String.valueOf(imgWidth));
            image.setAttributeNS(null, "height", String.valueOf(imgHeight));
            image.setAttributeNS(null, "id", id);
            image.setAttributeNS("xlink", "title", getActivityInfoString());


            //if (isAddIconOpacity() && !isAddSimpleActivityOpacity()) {
                group.appendChild(image);
                return group;
            //} else {

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        return group;
    }


    protected Element getArrows(SVGDocument doc) {
        Element subGroup = null;
        subGroup = doc.createElementNS("http://www.w3.org/2000/svg", "g");


        if (subActivities != null) {
            ActivityInterface prevActivity = null;
            ActivityInterface activity = null;
            String id = null;
            org.wso2.carbon.bpel.ui.bpel2svg.SVGCoordinates exitCoords = null;
            SVGCoordinates entryCoords = null;
            Iterator<org.wso2.carbon.bpel.ui.bpel2svg.ActivityInterface> itr = subActivities.iterator();
            while (itr.hasNext()) {
                activity = itr.next();
                if (prevActivity != null) {
                    exitCoords = prevActivity.getExitArrowCoords();
                    entryCoords = activity.getEntryArrowCoords();
                    id = prevActivity.getId() + "-" + activity.getId();
                    subGroup.appendChild(getArrowDefinition(doc, exitCoords.getXLeft(),
                        exitCoords.getYTop(), entryCoords.getXLeft(),
                        entryCoords.getYTop(), id, prevActivity, activity));
                }
                prevActivity = activity;
            }

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        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());
        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));
        //Add Arrow
        group.appendChild(getArrows(doc));


        return group;
    }

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        return group;
    }


    protected Element getArrows(SVGDocument doc) {
        Element subGroup = null;
        subGroup = doc.createElementNS("http://www.w3.org/2000/svg", "g");
        if (subActivities != null) {
            ActivityInterface prevActivity = null;
            ActivityInterface activity = null;
            String id = null;
            org.wso2.carbon.bpel.ui.bpel2svg.SVGCoordinates myStartCoords = getStartIconExitArrowCoords();
            org.wso2.carbon.bpel.ui.bpel2svg.SVGCoordinates exitCoords = null;
            SVGCoordinates entryCoords = null;
            Iterator<org.wso2.carbon.bpel.ui.bpel2svg.ActivityInterface> itr = subActivities.iterator();
            while (itr.hasNext()) {
                activity = itr.next();
                if (prevActivity != null) {
                    exitCoords = prevActivity.getExitArrowCoords();
                    entryCoords = activity.getEntryArrowCoords();
                    id = prevActivity.getId() + "-" + activity.getId();
                    subGroup.appendChild(getArrowDefinition(doc, exitCoords.getXLeft(), 
                        exitCoords.getYTop(), entryCoords.getXLeft(), 
                        entryCoords.getYTop(), id, prevActivity, activity));
                } else {
                    entryCoords = activity.getEntryArrowCoords();
                    subGroup.appendChild(getArrowDefinition(doc, myStartCoords.getXLeft(), 
                        myStartCoords.getYTop(), entryCoords.getXLeft(), 
                        entryCoords.getYTop(), id, prevActivity, activity));
                }
                prevActivity = activity;
            }

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        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;


    }

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        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;
    }

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    }    
    
    public Object end(final String uri,
                      final String localName,
                      final ExtensibleXmlParser xmlPackageReader) throws SAXException {
        final Element element = xmlPackageReader.endElementBuilder();


        ActionNode actionNode = ( ActionNode ) xmlPackageReader.getCurrent();
        
        String text = ((org.w3c.dom.Text)element.getChildNodes().item( 0 )).getWholeText();
        
        DroolsConsequenceAction actionText = new DroolsConsequenceAction( "mvel", "list.add(\"" + text + "\")" );
        
        actionNode.setAction( actionText );

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        return coords;
    }


    public Element getSVGString(SVGDocument doc) {
        Element group1 = null;
        group1 = doc.createElementNS("http://www.w3.org/2000/svg", "g");
        group1.setAttributeNS(null, "id", getLayerId());


        if (isAddOpacity()) {
            group1.setAttributeNS(null, "style", "opacity:" + getOpacity());
        }
        group1.appendChild(getBoxDefinition(doc));
        group1.appendChild(getImageDefinition(doc));
        group1.appendChild(getStartImageText(doc));
        // Get Sub Activities
        group1.appendChild(getSubActivitiesSVGString(doc));
        group1.appendChild(getEndImageDefinition(doc));
        // Add Arrow
        group1.appendChild(getArrows(doc));


        //attention - here group1 contain the box definition+ImageDefinition+etc... in the original
        // but here group does not contain that


        return group1;

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        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;
    }

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        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());  attention - this has no implementaion
        return group;
    }

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