/*******************************************************************************
* Copyright (c) 2005, 2016 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.ui.internal.browser;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import org.eclipse.core.runtime.Adapters;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.dnd.DND;
import org.eclipse.swt.dnd.DropTarget;
import org.eclipse.swt.dnd.FileTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.ISelectionListener;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.browser.IWorkbenchBrowserSupport;
import org.eclipse.ui.part.ISetSelectionTarget;
import org.eclipse.ui.part.ViewPart;
/**
* A Web browser viewer.
*/
public class WebBrowserView extends ViewPart implements
IBrowserViewerContainer, ISetSelectionTarget {
public static final String WEB_BROWSER_VIEW_ID = "org.eclipse.ui.browser.view"; //$NON-NLS-1$
protected BrowserViewer viewer;
protected ISelectionListener listener;
@Override
public void createPartControl(Composite parent) {
int style = WebBrowserUtil.decodeStyle(getViewSite().getSecondaryId());
viewer = new BrowserViewer(parent, style);
viewer.setContainer(this);
initDragAndDrop();
}
@Override
public void dispose() {
if (viewer!=null)
viewer.setContainer(null);
if (listener != null)
removeSelectionListener();
}
public void setURL(String url) {
if (viewer != null)
viewer.setURL(url);
}
@Override
public void setFocus() {
viewer.setFocus();
}
@Override
public boolean close() {
try {
getSite().getPage().hideView(this);
return true;
} catch (Exception e) {
return false;
}
}
@Override
public IActionBars getActionBars() {
return getViewSite().getActionBars();
}
@Override
public void openInExternalBrowser(String url) {
try {
URL theURL = new URL(url);
IWorkbenchBrowserSupport support = PlatformUI.getWorkbench()
.getBrowserSupport();
support.getExternalBrowser().openURL(theURL);
} catch (MalformedURLException e) {
// TODO handle this
} catch (PartInitException e) {
// TODO handle this
}
}
public void addSelectionListener() {
if (listener != null)
return;
listener = (part, selection) -> onSelectionChange(selection);
getSite().getWorkbenchWindow().getSelectionService()
.addPostSelectionListener(listener);
}
private void onSelectionChange(ISelection selection) {
if (!(selection instanceof IStructuredSelection))
return;
IStructuredSelection sel = (IStructuredSelection) selection;
Object obj = sel.getFirstElement();
URL url = getURLFrom(obj);
if (url != null)
setURL(url.toExternalForm());
}
private URL getURLFrom(Object adapt) {
// test for path
IPath path = Adapters.adapt(adapt, IPath.class);
if (path != null) {
File file = path.toFile();
if (file.exists() && isWebFile(file.getName()))
try {
return file.toURI().toURL();
} catch (MalformedURLException e) {
return null;
}
}
return Adapters.adapt(adapt, URL.class);
}
public void removeSelectionListener() {
if (listener == null)
return;
getSite().getWorkbenchWindow().getSelectionService()
.removePostSelectionListener(listener);
listener = null;
}
/**
* Return true if the filename has a "web" extension.
*
* @param name
* @return
*/
protected boolean isWebFile(String name) {
return name.endsWith("html") || name.endsWith("htm") || name.endsWith("gif") || //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
name.endsWith("jpg"); //$NON-NLS-1$
}
/**
* Adds drag and drop support to the view.
*/
protected void initDragAndDrop() {
Transfer[] transfers = new Transfer[] { FileTransfer.getInstance() };
DropTarget dropTarget = new DropTarget(viewer, DND.DROP_COPY | DND.DROP_DEFAULT);
dropTarget.setTransfer(transfers);
dropTarget.addDropListener(new WebBrowserViewDropAdapter(viewer));
}
@Override
public void selectReveal(ISelection selection) {
onSelectionChange(selection);
}
public void setBrowserViewName(String name) {
setPartName(name);
}
public void setBrowserViewTooltip(String tip) {
setTitleToolTip(tip);
}
}