/*
* 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.eclipse.flow.ruleflow.view.property.constraint;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.drools.eclipse.editors.DRLSourceViewerConfig;
import org.drools.eclipse.editors.scanners.DRLPartionScanner;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IDocumentPartitioner;
import org.eclipse.jface.text.contentassist.ContentAssistant;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.jface.text.contentassist.IContentAssistant;
import org.eclipse.jface.text.reconciler.IReconciler;
import org.eclipse.jface.text.rules.FastPartitioner;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.KeyListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;
import org.jbpm.workflow.core.WorkflowProcess;
/**
* Dialog for editing imports.
*/
public class RuleFlowGlobalsDialog extends Dialog {
private static final Pattern GLOBAL_PATTERN = Pattern.compile(
"\\n\\s*global\\s+([^\\s;#]+)\\s+([^\\s;#]+);?", Pattern.DOTALL);
private WorkflowProcess process;
private boolean success;
private TabFolder tabFolder;
private SourceViewer globalsViewer;
private Map<String, String> globals;
public RuleFlowGlobalsDialog(Shell parentShell, WorkflowProcess process) {
super(parentShell);
this.process = process;
setShellStyle(getShellStyle() | SWT.RESIZE);
}
protected void configureShell(Shell newShell) {
super.configureShell(newShell);
newShell.setText("Globals editor");
}
protected Point getInitialSize() {
return new Point(600, 450);
}
private Control createTextualEditor(Composite parent) {
globalsViewer = new SourceViewer(parent, null, SWT.BORDER);
globalsViewer.configure(new DRLSourceViewerConfig(null) {
public IReconciler getReconciler(ISourceViewer sourceViewer) {
return null;
}
public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {
ContentAssistant assistant = new ContentAssistant();
IContentAssistProcessor completionProcessor = new GlobalCompletionProcessor();
assistant.setContentAssistProcessor(
completionProcessor, IDocument.DEFAULT_CONTENT_TYPE);
assistant.setProposalPopupOrientation(IContentAssistant.PROPOSAL_OVERLAY);
return assistant;
}
});
IDocument document = new Document(getProcessImports());
globalsViewer.setDocument(document);
IDocumentPartitioner partitioner =
new FastPartitioner(
new DRLPartionScanner(),
DRLPartionScanner.LEGAL_CONTENT_TYPES);
partitioner.connect(document);
document.setDocumentPartitioner(partitioner);
globalsViewer.getControl().addKeyListener(new KeyListener() {
public void keyPressed(KeyEvent e) {
if (e.character == ' ' && e.stateMask == SWT.CTRL) {
globalsViewer.doOperation(ISourceViewer.CONTENTASSIST_PROPOSALS);
}
}
public void keyReleased(KeyEvent e) {
}
});
return globalsViewer.getControl();
}
private String getProcessImports() {
String result = "# define your globals here: e.g. global java.util.List myList\n";
Map<String, String> globals = ((org.jbpm.process.core.Process) process).getGlobals();
if (globals != null) {
for (Map.Entry<String, String> entry: globals.entrySet()) {
result += "global " + entry.getValue() + " " + entry.getKey() + "\n";
}
}
return result;
}
public Control createDialogArea(Composite parent) {
GridLayout layout = new GridLayout();
parent.setLayout(layout);
layout.numColumns = 1;
tabFolder = new TabFolder(parent, SWT.NONE);
GridData gd = new GridData();
gd.grabExcessHorizontalSpace = true;
gd.grabExcessVerticalSpace = true;
gd.verticalAlignment = GridData.FILL;
gd.horizontalAlignment = GridData.FILL;
tabFolder.setLayoutData(gd);
TabItem textEditorTab = new TabItem(tabFolder, SWT.NONE);
textEditorTab.setText("Globals");
textEditorTab.setControl(createTextualEditor(tabFolder));
return tabFolder;
}
protected void okPressed() {
success = true;
updateGlobals();
super.okPressed();
}
public boolean isSuccess() {
return success;
}
public Map<String, String> getGlobals() {
return globals;
}
private void updateGlobals() {
this.globals = new HashMap<String, String>();
Matcher matcher = GLOBAL_PATTERN.matcher(globalsViewer.getDocument().get());
while (matcher.find()) {
this.globals.put(matcher.group(2), matcher.group(1));
}
}
}