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/*******************************************************************************
* Copyright (c) 2018 Red Hat Inc. 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:
* Lucas Bullen (Red Hat Inc.) - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.snippets;
/*
* Browser: Resize the shell to the fit the html content after it's loaded.
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*
* @since 4.8
*/
import org.eclipse.swt.*;
import org.eclipse.swt.browser.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
public class Snippet372 {
static Double width = null;
public static void main(String [] args) {
int maximumWidth = 200;
int maximumHeight= 2000;
String html = "<HTML><HEAD><TITLE>HTML Test</TITLE></HEAD><BODY>";
for (int i = 0; i < 15; i++) html += "<P>This is line "+i+"</P>";
html += "</BODY></HTML>";
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
Browser browser;
try {
browser = new Browser(shell, SWT.NONE);
} catch (SWTError e) {
System.out.println("Could not instantiate Browser: " + e.getMessage());
display.dispose();
return;
}
browser.setText(html);
browser.addProgressListener(ProgressListener.completedAdapter(event -> {
// Set the display to something known to be smaller than the content
shell.setSize(50, 50);
browser.execute("document.getElementsByTagName(\"html\")[0].style.whiteSpace = \"nowrap\""); //$NON-NLS-1$
// Save the width to either be a decided maximum or the browser's content width plus the margin
Double width = Math.min(maximumWidth, 10 + (Double) browser.evaluate("return document.body.scrollWidth;")); //$NON-NLS-1$
shell.setSize(width.intValue(), 0);
browser.execute("document.getElementsByTagName(\"html\")[0].style.whiteSpace = \"normal\""); //$NON-NLS-1$
shell.layout();
// Set the height to either be a decided maximum or the browser's content height plus the margin
Double height = Math.min(maximumHeight, 5 + (Double) browser.evaluate("return document.body.scrollHeight;")); //$NON-NLS-1$
shell.setSize(width.intValue(), height.intValue());
}));
shell.open();
while (!shell.isDisposed()) {
shell.layout();
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
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