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/*******************************************************************************
* Copyright (c) 2000, 2009 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.snippets;
/*
* Browser example snippet: View DOM tree and edit node values in a Mozilla Browser
*
* IMPORTANT: For this snippet to work properly all of the requirements
* for using JavaXPCOM in a stand-alone application must be satisfied
* (see http://www.eclipse.org/swt/faq.php#howusejavaxpcom).
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*
* @since 3.3
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.*;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
import org.mozilla.interfaces.*;
public class Snippet323 {
public static void main (String[] args) {
new Snippet323 ().run ();
}
void run () {
final Display display = new Display ();
final Shell shell = new Shell (display);
shell.setBounds (10,10,500,500);
shell.setLayout (new FillLayout ());
final Browser browser = new Browser (shell, SWT.MOZILLA);
browser.setUrl ("http://www.google.com");
browser.addProgressListener (new ProgressAdapter () {
public void completed (ProgressEvent event) {
nsIWebBrowser webBrowser = (nsIWebBrowser)browser.getWebBrowser ();
nsIDOMWindow domWindow = webBrowser.getContentDOMWindow ();
nsIDOMDocument document = domWindow.getDocument ();
nsIDOMElement documentElement = document.getDocumentElement ();
DOMEditor domEditor = new DOMEditor (shell);
domEditor.populate (documentElement);
}
});
shell.open ();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
}
class DOMEditor {
Tree tree;
public DOMEditor (Shell parent) {
super ();
Shell shell = new Shell (parent, SWT.SHELL_TRIM);
shell.setText ("DOM Editor");
shell.setBounds (510,10,400,400);
shell.setLayout (new FillLayout ());
tree = new Tree (shell, SWT.NONE);
shell.open ();
final TreeItem[] lastItem = new TreeItem[1];
final TreeEditor editor = new TreeEditor (tree);
tree.addSelectionListener (new SelectionAdapter () {
public void widgetDefaultSelected (SelectionEvent e) {
final TreeItem item = (TreeItem)e.item;
final nsIDOMNode node = (nsIDOMNode)item.getData ();
if (node == null) return; /* not editable */
if (item != null && item == lastItem[0]) {
final Composite composite = new Composite (tree, SWT.NONE);
final Text text = new Text (composite, SWT.NONE);
final int inset = 1;
composite.addListener (SWT.Resize, new Listener () {
public void handleEvent (Event e) {
Rectangle rect = composite.getClientArea ();
text.setBounds (rect.x + inset, rect.y + inset, rect.width - inset * 2, rect.height - inset * 2);
}
});
Listener textListener = new Listener () {
public void handleEvent (final Event e) {
switch (e.type) {
case SWT.FocusOut:
String string = text.getText ();
node.setNodeValue (string);
item.setText ("Node Value: " + node.getNodeValue ());
composite.dispose ();
break;
case SWT.Verify:
String newText = text.getText ();
String leftText = newText.substring (0, e.start);
String rightText = newText.substring (e.end, newText.length ());
GC gc = new GC (text);
Point size = gc.textExtent (leftText + e.text + rightText);
gc.dispose ();
size = text.computeSize (size.x, SWT.DEFAULT);
editor.horizontalAlignment = SWT.LEFT;
Rectangle itemRect = item.getBounds (), rect = tree.getClientArea ();
editor.minimumWidth = Math.max (size.x, itemRect.width) + inset * 2;
int left = itemRect.x, right = rect.x + rect.width;
editor.minimumWidth = Math.min (editor.minimumWidth, right - left);
editor.minimumHeight = size.y + inset * 2;
editor.layout ();
break;
case SWT.Traverse:
switch (e.detail) {
case SWT.TRAVERSE_RETURN:
string = text.getText ();
node.setNodeValue (string);
item.setText ("Node Value: " + node.getNodeValue ());
//FALL THROUGH
case SWT.TRAVERSE_ESCAPE:
composite.dispose ();
e.doit = false;
}
break;
}
}
};
text.addListener (SWT.FocusOut, textListener);
text.addListener (SWT.Traverse, textListener);
text.addListener (SWT.Verify, textListener);
editor.setEditor (composite, item);
String nodeValue = node.getNodeValue ();
text.setText (nodeValue == null ? "null" : nodeValue);
text.selectAll ();
text.setFocus ();
}
lastItem [0] = item;
}
});
}
public void populate (nsIDOMElement element) {
tree.removeAll ();
TreeItem root = new TreeItem (tree, SWT.NONE);
root.setText ("Root: " + element.getTagName ());
populate (root, element);
}
void populate (TreeItem parentItem, nsIDOMNode node) {
String nodeName = node.getNodeName ();
if (nodeName.length () > 0) {
new TreeItem (parentItem, SWT.NONE).setText ("Node Name: " + nodeName);
}
String localName = node.getLocalName ();
if (localName != null && localName.length () > 0) {
new TreeItem (parentItem, SWT.NONE).setText ("Local Name: " + localName);
}
TreeItem valueItem = new TreeItem (parentItem, SWT.NONE);
String nodeValue = node.getNodeValue ();
valueItem.setText ("Node Value: " + nodeValue);
if (node != null) {
valueItem.setData (node);
Color red = parentItem.getDisplay ().getSystemColor (SWT.COLOR_RED);
valueItem.setForeground (red);
}
String prefix = node.getPrefix ();
if (prefix != null && prefix.length () > 0) {
new TreeItem (parentItem, SWT.NONE).setText ("Prefix: " + prefix);
}
String namespaceURI = node.getNamespaceURI ();
if (namespaceURI != null && namespaceURI.length () > 0) {
new TreeItem (parentItem, SWT.NONE).setText ("Namespace URI: " + namespaceURI);
}
nsIDOMNamedNodeMap attributes = node.getAttributes ();
if (attributes != null) {
int count = (int)attributes.getLength ();
if (count > 0) {
for (int i = 0; i < count; i++) {
TreeItem attributeItem = new TreeItem (parentItem, SWT.NONE);
nsIDOMNode child = attributes.item (i);
attributeItem.setText ("Attribute " + i + " (" + child.getNodeName () + ")");
populate (attributeItem, child);
}
}
}
String typeString;
switch (node.getNodeType ()) {
case 1: typeString = "ELEMENT_NODE"; break;
case 2: typeString = "ATTRIBUTE_NODE"; break;
case 3: typeString = "TEXT_NODE"; break;
case 4: typeString = "CDATA_SECTION_NODE"; break;
case 5: typeString = "ENTITY_REFERENCE_NODE"; break;
case 6: typeString = "ENTITY_NODE"; break;
case 7: typeString = "PROCESSING_INSTRUCTION_NODE"; break;
case 8: typeString = "COMMENT_NODE"; break;
case 9: typeString = "DOCUMENT_NODE"; break;
case 10: typeString = "DOCUMENT_TYPE_NODE"; break;
case 11: typeString = "DOCUMENT_FRAGMENT_NODE"; break;
case 12: typeString = "NOTATION_NODE"; break;
default: typeString = "unknown?!?";
}
new TreeItem (parentItem, SWT.NONE).setText ("Type: " + typeString);
nsIDOMNodeList children = node.getChildNodes ();
int count = (int)children.getLength ();
if (count > 0) {
for (int i = 0; i < count; i++) {
TreeItem childItem = new TreeItem (parentItem, SWT.NONE);
nsIDOMNode child = children.item (i);
childItem.setText ("Child " + i + " (" + child.getNodeName () + ")");
populate (childItem, child);
}
}
}
}
}
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