/**
* Copyright 2009 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.safehaus.penrose.studio.directory.dialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.events.*;
import org.eclipse.swt.widgets.*;
import org.safehaus.penrose.mapping.*;
import org.safehaus.penrose.studio.PenroseImage;
import org.safehaus.penrose.studio.PenroseStudio;
import org.safehaus.penrose.studio.dialog.ErrorDialog;
import org.apache.log4j.Logger;
public class RelationshipDialog extends Dialog {
Logger log = Logger.getLogger(getClass());
public final static int CANCEL = 0;
public final static int OK = 1;
Shell shell;
Button expressionButton;
Button simpleJoinButton;
Text expressionText;
Table leftTable;
Combo operatorCombo;
Table rightTable;
private int action;
Relationship relationship;
String[] comparisons = new String[] { "=" }; //, ">", ">=", "<", "<=" };
public RelationshipDialog(Shell parent, int style) {
super(parent, style);
shell = new Shell(parent, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL | SWT.RESIZE);
createControl(shell);
}
public void open () {
Point size = new Point(400, 300);
shell.setSize(size);
Point l = getParent().getLocation();
Point s = getParent().getSize();
shell.setLocation(l.x + (s.x - size.x)/2, l.y + (s.y - size.y)/2);
shell.setText(getText());
shell.setImage(PenroseStudio.getImage(PenroseImage.LOGO));
shell.open();
Display display = getParent().getDisplay();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) display.sleep();
}
}
public void createControl(final Shell parent) {
GridLayout layout = new GridLayout();
layout.numColumns = 3;
parent.setLayout(layout);
/*
// (x) Expression
expressionButton = new Button(sectionClient, SWT.RADIO);
expressionButton.setText("Expression");
expressionButton.setLayoutData(new TableWrapData(TableWrapData.FILL_GRAB, TableWrapData.FILL_GRAB, 1, 3));
expressionButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
selectionChanged();
}
});
// (expression text)
expressionText = new Text(parent, SWT.BORDER);
GridData gd = new GridData(GridData.FILL_HORIZONTAL);
gd.horizontalSpan = 3;
expressionText.setLayoutData(gd);
expressionText.setEditable(false);
expressionText.setEnabled(false);
expressionText.addModifyListener(new ModifyListener() {
public void modifyText(ModifyEvent e) {
guessSimpleExpression(false);
}
});
// (x) Simple Join
simpleJoinButton = new Button(sectionClient, SWT.RADIO);
simpleJoinButton.setText("Simple Join");
simpleJoinButton.setLayoutData(new TableWrapData(TableWrapData.FILL_GRAB, TableWrapData.FILL_GRAB, 1, 3));
simpleJoinButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
selectionChanged();
}
});
*/
leftTable = new Table(parent, SWT.BORDER | SWT.READ_ONLY);
leftTable.setLayoutData(new GridData(GridData.FILL_BOTH));
/*
leftTable.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
updateSimpleJoin();
}
});
*/
operatorCombo = new Combo(parent, SWT.DROP_DOWN | SWT.READ_ONLY);
operatorCombo.setLayoutData(new GridData(GridData.FILL));
for (String comparison : comparisons) {
operatorCombo.add(comparison);
}
operatorCombo.select(0);
/*
operatorCombo.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
updateSimpleJoin();
}
});
*/
rightTable = new Table(parent, SWT.BORDER | SWT.READ_ONLY);
rightTable.setLayoutData(new GridData(GridData.FILL_BOTH));
/*
rightTable.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
updateSimpleJoin();
}
});
*/
Composite buttons = new Composite(parent, SWT.NONE);
GridData gd = new GridData(GridData.FILL_HORIZONTAL);
gd.horizontalSpan = 3;
gd.horizontalAlignment = GridData.END;
buttons.setLayoutData(gd);
buttons.setLayout(new RowLayout());
Button saveButton = new Button(buttons, SWT.PUSH);
saveButton.setText("Save");
saveButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
try {
if (leftTable.getSelectionCount() == 0) return;
if (rightTable.getSelectionCount() == 0) return;
TableItem leftItem = leftTable.getSelection()[0];
TableItem rightItem = rightTable.getSelection()[0];
String expression = leftItem.getText()+" "+operatorCombo.getText()+" "+rightItem.getText();
System.out.println("Expression: "+expression);
relationship.setLhs(leftItem.getText());
relationship.setRhs(rightItem.getText());
System.out.println("Relationship: "+relationship.getExpression());
action = OK;
shell.close();
} catch (Exception e) {
log.error(e.getMessage(), e);
ErrorDialog.open(e);
}
}
});
Button cancelButton = new Button(buttons, SWT.PUSH);
cancelButton.setText("Cancel");
cancelButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
shell.close();
}
});
}
public void selectionChanged() {
/*
if (expressionButton.getSelection()) {
expression.setEditable(true);
expression.setEnabled(true);
leftTable.setEnabled(false);
rightTable.setEnabled(false);
operatorCombo.setEnabled(false);
} else if (simpleJoinButton.getSelection()) {
expressionText.setEditable(false);
expressionText.setEnabled(false);
leftTable.setEnabled(true);
rightTable.setEnabled(true);
operatorCombo.setEnabled(true);
//}
*/
}
/*
public void updateSimpleJoin() {
try {
String left = leftTable.getSelection()[0].getText();
String right = rightTable.getSelection()[0].getText();
String comp = operatorCombo.getText();
if (left == null || left.equals("")) return;
if (right == null || right.equals("")) return;
if (comp == null || comp.equals("")) return;
String exp = left + " " + comp + " " + right;
expressionText.setText(exp);
} catch (Exception ex) {
System.out.println("Error: "+ex.getMessage());
}
}
public void guessSimpleExpression(boolean initial) {
System.out.println("[RelationshipDialog] guessSimpleExpression");
if (expressionText.getText() == null || expressionText.getText().equals("")) return;
try {
for (int i=comparisons.length-1; i>=0; i--) {
String comp = comparisons[i];
int f1 = expressionText.getText().indexOf(comp);
int f2 = -1;
try {
expressionText.getText().indexOf(comp, f1+1);
} catch (Exception ex) {
}
if (f1 >= 0 && f2 < 0) {
// exactly one occurence of comparison
String l = expressionText.getText().substring(0, f1-1).trim();
String r = expressionText.getText().substring(f1+comp.length()).trim();
int lj = -1;
int rj = -1;
for (int j=0; j<leftTable.getItemCount(); j++) {
TableItem item = leftTable.getItem(j);
if (item.getText().equals(l)) {
lj = j;
}
}
for (int j=0; j<rightTable.getItemCount(); j++) {
TableItem item = rightTable.getItem(j);
if (item.getText().equals(r)) {
rj = j;
}
}
if (lj > -1 && rj > -1) {
leftTable.select(lj);
rightTable.select(rj);
operatorCombo.select(i);
if (initial) {
//expressionButton.setSelection(false);
//simpleJoinButton.setSelection(true);
}
} else {
if (initial) {
//expressionButton.setSelection(true);
//simpleJoinButton.setSelection(false);
}
}
selectionChanged();
break;
}
}
} catch (Exception ex) {
// don't worry if we fail
System.out.println("Error: "+ex.getMessage());
}
}
*/
public void addField(String name, boolean primaryKey) {
TableItem item = new TableItem(leftTable, SWT.NONE);
item.setText(name);
item.setImage(PenroseStudio.getImage(primaryKey ? PenroseImage.KEY : PenroseImage.NOKEY));
item = new TableItem(rightTable, SWT.NONE);
item.setText(name);
item.setImage(PenroseStudio.getImage(primaryKey ? PenroseImage.KEY : PenroseImage.NOKEY));
}
public void setRelationship(Relationship relationship) {
this.relationship = relationship;
String lhs = relationship.getLhs();
String rhs = relationship.getRhs();
TableItem items[] = leftTable.getItems();
for (int i=0; i<items.length; i++) {
if (items[i].getText().equals(lhs)) leftTable.select(i);
if (items[i].getText().equals(rhs)) rightTable.select(i);
}
operatorCombo.setText(relationship.getOperator());
}
public int getAction() {
return action;
}
public void setAction(int action) {
this.action = action;
}
}