/**
* Copyright 2010 JBoss Inc
*
* 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 org.drools.guvnor.client.rulefloweditor;
/*
* Copyright 2005 JBoss Inc
*
* 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.
*/
import org.cobogw.gwt.user.client.ui.RoundedPanel;
import org.drools.guvnor.client.rulefloweditor.RuleFlowBaseNode.Corners;
import org.drools.guvnor.client.rulefloweditor.TransferNode.Type;
import pl.balon.gwt.diagrams.client.connection.Connection;
import com.google.gwt.user.client.ui.AbsolutePanel;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Widget;
public class RuleFlowNodeFactory {
public static RuleFlowBaseNode createNode(TransferNode tn) {
RuleFlowBaseNode n;
if ( tn.getType() == Type.START ) {
n = new StartNode();
} else if ( tn.getType() == Type.HUMANTASK ) {
n = createHumanTask( (HumanTaskTransferNode) tn );
} else if ( tn.getType() == Type.JOIN ) {
n = new JoinNode();
} else if ( tn.getType() == Type.SUB_PROCESS ) {
n = new SubProcessNode();
} else if ( tn.getType() == Type.MILESTONE ) {
n = new MileStoneNode();
} else if ( tn.getType() == Type.TIMER ) {
n = new TimerNode();
} else if ( tn.getType() == Type.ACTION_NODE ) {
n = new ActionNode();
} else if ( tn.getType() == Type.WORK_ITEM ) {
n = createWorkItemNode( (WorkItemTransferNode) tn );
} else if ( tn.getType() == Type.RULESET ) {
n = new RuleSetNode();
} else if ( tn.getType() == Type.SPLIT ) {
n = createSplit( (SplitTransferNode) tn );
} else if ( tn.getType() == Type.FOR_EACH ) {
n = createElementContainerNode( new ForEachNode(),
(ElementContainerTransferNode) tn );
} else if ( tn.getType() == Type.FAULT ) {
n = new FaultNode();
} else if ( tn.getType() == Type.EVENT ) {
n = new EventNode();
} else if ( tn.getType() == Type.COMPOSITE ) {
n = createElementContainerNode( new CompositeNode(),
(ElementContainerTransferNode) tn );
} else if ( tn.getType() == Type.END ) {
n = new EndNode();
} else {
throw new IllegalArgumentException( "Unkown node type " + tn );
}
fillRuleFlowBaseNode( n,
tn );
return n;
}
private static RuleFlowBaseNode createElementContainerNode(ElementContainerNode node,
ElementContainerTransferNode tn) {
for ( TransferNode subNode : tn.getContentModel().getNodes() ) {
RuleFlowBaseNode baseNode = createNode( subNode );
node.getNodes().put( baseNode.getId(),
baseNode );
}
for ( TransferConnection c : tn.getContentModel().getConnections() ) {
try {
node.getConnections().add( RuleFlowConnectionFactory.createConnection( c,
node.getNodes() ) );
} catch ( RuntimeException e ) {
// TODO: handle exception
}
}
return node;
}
private static RuleFlowBaseNode createWorkItemNode(WorkItemTransferNode node) {
WorkItemNode workItemNode = null;
if ( node.getWorkName().equals( WorkItemNode.EMAIL ) ) {
workItemNode = new EmailNode();
} else if ( node.getWorkName().equals( WorkItemNode.LOG ) ) {
workItemNode = new LogNode();
} else {
workItemNode = new DefaultWorkItemNode();
}
workItemNode.setAttributes( node.getParameters() );
return workItemNode;
}
private static RuleFlowBaseNode createSplit(SplitTransferNode tn) {
SplitNode splitNode = new SplitNode();
splitNode.type = tn.getSplitType();
splitNode.constraints = tn.getConstraints();
return splitNode;
}
private static RuleFlowBaseNode createHumanTask(HumanTaskTransferNode node) {
HumanTaskNode n = new HumanTaskNode();
n.setAttributes( node.getParameters() );
return n;
}
private static void fillRuleFlowBaseNode(RuleFlowBaseNode node,
TransferNode tn) {
fillIdAndCoordinates( node,
tn );
Widget panel;
if ( node.getImagePath() == null ) {
panel = createContentWithoutImage( tn.getName(),
node,
tn.getWidth() );
} else {
panel = createContentWithImage( tn.getName(),
node,
tn.getWidth() );
}
if ( node.getCorners() == Corners.ROUNDED ) {
int cornerHeight = LayoutCalculator.calculateCornerHeight( tn.getWidth() );
panel.setHeight( LayoutCalculator.calculateNodeHeight( tn.getHeight(),
cornerHeight ) + "px" );
RuleFlowRoundedPanel rp = new RuleFlowRoundedPanel( RoundedPanel.ALL,
RuleFlowBaseNode.CORNER_HEIGHT );
rp.setTopAndBottomRowColor( "Black" );
rp.setCornerStyleName( node.getStyle() );
rp.add( panel );
node.add( rp );
} else if ( node.getCorners() == Corners.ROUND ) {
int cornerHeight = LayoutCalculator.calculateRoundCornerHeight( tn.getWidth() );
panel.setHeight( "1px" );
RuleFlowRoundPanel rp = new RuleFlowRoundPanel( cornerHeight );
rp.setTopAndBottomRowColor( "Black" );
rp.setCornerStyleName( node.getStyle() );
rp.add( panel );
node.add( rp );
} else {
panel.setHeight( tn.getHeight() + "px" );
if ( node instanceof ElementContainerNode ) {
// Add nodes that are in for each node
AbsolutePanel ap = new AbsolutePanel();
ElementContainerNode fen = (ElementContainerNode) node;
for ( RuleFlowBaseNode baseNode : fen.getNodes().values() ) {
ap.add( baseNode,
baseNode.getX(),
baseNode.getY() );
}
// Add connections that are in for each node
for ( Connection c : fen.getConnections() ) {
c.appendTo( ap );
}
ap.add( panel );
node.add( ap );
} else {
node.add( panel );
}
}
}
private static Widget createContentWithoutImage(String name,
RuleFlowBaseNode node,
int width) {
Label label = new Label( name );
label.setStyleName( node.getStyle() );
label.setWidth( width + "px" );
return label;
}
private static Widget createContentWithImage(String name,
RuleFlowBaseNode node,
int width) {
Label label = new Label( name );
Image image = new Image();
image.setStyleName( RuleFlowBaseNode.IMAGE_STYLE );
image.setResource( node.getImagePath() );
HorizontalPanel panel = new HorizontalPanel();
panel.setStyleName( node.getStyle() );
panel.add( image );
panel.add( label );
panel.setWidth( width + "px" );
return panel;
}
protected static void fillIdAndCoordinates(RuleFlowBaseNode node,
TransferNode tn) {
node.addClickHandler( node );
node.setId( tn.getId() );
node.setX( tn.getX() );
node.setY( tn.getY() );
}
protected static class LayoutCalculator {
/**
* Subtracts the border height from nodes height.
*
* @return node height
*/
static int calculateNodeHeight(int height,
int cornerHeight) {
int newHeight = 0;
if ( height < (2 * cornerHeight) ) {
newHeight = height;
} else {
newHeight = height - (2 * cornerHeight);
}
return newHeight;
}
/**
* Calculates the corner height. If the width is too short, adding the
* corner divs go over the node edges.
*
* @param width
* @return The fixed corner height
*/
static int calculateCornerHeight(int width) {
int newWidth = 1;
if ( width < RuleFlowBaseNode.CORNER_HEIGHT ) {
newWidth = width - 4;
} else if ( width <= 20 ) {
newWidth = 6;
} else {
newWidth = RuleFlowBaseNode.CORNER_HEIGHT;
}
if ( newWidth <= 0 ) {
return 1;
} else {
return newWidth;
}
}
static int calculateRoundCornerHeight(int width) {
if ( width < 44 ) {
return width / 2 - 1;
} else {
return 16;
}
}
}
}