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QueryTextResultPane.java
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QueryTextResultPane.java
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/*******************************************************************************
* Copyright (c) 2008, 2020 SAP AG and IBM Corporation.
* 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:
* SAP AG - initial API and implementation
* Andrew Johnson (IBM Corporation) - MAT Calcite
*******************************************************************************/
package org.eclipse.mat.ui.internal.panes;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.nio.file.Files;
import java.nio.file.StandardCopyOption;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.mat.SnapshotException;
import org.eclipse.mat.query.ContextProvider;
import org.eclipse.mat.query.IContextObject;
import org.eclipse.mat.query.registry.ArgumentSet;
import org.eclipse.mat.query.registry.CommandLine;
import org.eclipse.mat.query.registry.QueryObjectLink;
import org.eclipse.mat.query.registry.QueryResult;
import org.eclipse.mat.query.results.DisplayFileResult;
import org.eclipse.mat.query.results.TextResult;
import org.eclipse.mat.ui.MemoryAnalyserPlugin;
import org.eclipse.mat.ui.Messages;
import org.eclipse.mat.ui.QueryExecution;
import org.eclipse.mat.ui.actions.OpenHelpPageAction;
import org.eclipse.mat.ui.editor.AbstractEditorPane;
import org.eclipse.mat.ui.util.ErrorHelper;
import org.eclipse.mat.ui.util.PopupMenu;
import org.eclipse.mat.ui.util.QueryContextMenu;
import org.eclipse.mat.util.HTMLUtils;
import org.eclipse.mat.util.MessageUtil;
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTError;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.browser.CloseWindowListener;
import org.eclipse.swt.browser.LocationEvent;
import org.eclipse.swt.browser.LocationListener;
import org.eclipse.swt.browser.OpenWindowListener;
import org.eclipse.swt.browser.VisibilityWindowListener;
import org.eclipse.swt.browser.WindowEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.actions.ActionFactory;
public class QueryTextResultPane extends AbstractEditorPane implements ISelectionProvider, LocationListener
{
private Browser browser;
private Text text;
private IStructuredSelection selection;
private List<ISelectionChangedListener> listeners = Collections
.synchronizedList(new ArrayList<ISelectionChangedListener>());
QueryContextMenu contextMenu;
QueryResult queryResult;
private Menu menu;
static final int BROWSER_STYLE = SWT.NONE;
public void createPartControl(Composite parent)
{
final Composite top = new Composite(parent, SWT.NONE);
top.setLayout(new FillLayout(SWT.VERTICAL));
try
{
browser = new Browser(top, BROWSER_STYLE);
browser.addLocationListener(this);
//initialize(browser.getDisplay(), browser);
}
catch (SWTError e)
{
Text text1 = new Text(top, SWT.MULTI);
text1.setText(MessageUtil.format(Messages.QueryTextResultPane_FailedBrowser, e.getLocalizedMessage()));
PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, "org.eclipse.mat.ui.help.report"); //$NON-NLS-1$
text = new Text(top, SWT.MULTI | SWT.READ_ONLY);
ErrorHelper.logThrowableAndShowMessage(e, MessageUtil.format(Messages.QueryTextResultPane_FailedBrowser2, e.getLocalizedMessage()));
}
contextMenu = new QueryContextMenu(this, new ContextProvider((String) null)
{
public IContextObject getContext(Object obj)
{
return (IContextObject) obj;
}
});
}
/*
* From examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet270.java
* Aims to allow target=_blank for Linux - but doesn't yet work (crash in libwebkit2gtk-4.0.so.37)
*/
/* register WindowEvent listeners */
void initialize(final Display display, Browser browser)
{
browser.addOpenWindowListener(new OpenWindowListener() {
public void open(WindowEvent event)
{
if (!event.required) return; /* only do it if necessary */
Shell shell = new Shell(display);
shell.setText(Messages.QueryTextResultPane_BrowserTitle);
shell.setLayout(new FillLayout());
Browser browser = new Browser(shell, BROWSER_STYLE);
initialize(display, browser);
event.browser = browser;
}
});
browser.addVisibilityWindowListener(new VisibilityWindowListener() {
public void hide(WindowEvent event)
{
Browser browser = (Browser)event.widget;
Shell shell = browser.getShell();
shell.setVisible(false);
}
public void show(WindowEvent event)
{
Browser browser = (Browser)event.widget;
final Shell shell = browser.getShell();
if (event.location != null) shell.setLocation(event.location);
if (event.size != null)
{
Point size = event.size;
shell.setSize(shell.computeSize(size.x, size.y));
}
shell.open();
}
});
browser.addCloseWindowListener(new CloseWindowListener() {
public void close(WindowEvent event)
{
Browser browser = (Browser)event.widget;
Shell shell = browser.getShell();
shell.close();
}
});
}
@Override
public void initWithArgument(Object argument)
{
if (!(argument instanceof QueryResult))
return;
queryResult = (QueryResult) argument;
if (queryResult.getSubject() instanceof TextResult)
{
TextResult textResult = (TextResult) queryResult.getSubject();
if (textResult.isHtml())
{
if (browser != null)
browser.setText(textResult.getText());
else
text.setText(textResult.getText());
}
else
{
String html = "<pre>" + HTMLUtils.escapeText(textResult.getText()) + "</pre>"; //$NON-NLS-1$//$NON-NLS-2$
if (browser != null)
browser.setText(html);
else
text.setText(html);
}
}
else if (queryResult.getSubject() instanceof DisplayFileResult)
{
try
{
DisplayFileResult r = (DisplayFileResult) queryResult.getSubject();
if (browser != null)
{
// Current Eclipse IE browser doesn't handle @media prefers-color-scheme
if (browser.getBrowserType().equals("ie") && darkMode()) //$NON-NLS-1$
{
File p = r.getFile().getParentFile();
File styles = new File(p, "styles.css"); //$NON-NLS-1$
File stylesDark = new File(p, "styles-dark.css"); //$NON-NLS-1$
if (styles.canWrite() && stylesDark.canRead())
{
try
{
Files.copy(stylesDark.toPath(), styles.toPath(), StandardCopyOption.REPLACE_EXISTING);
}
catch (IOException e)
{
// Log and leave in light mode
ErrorHelper.logThrowableAndShowMessage(e);
}
}
}
browser.setUrl(r.getFile().toURI().toURL().toExternalForm());
}
else
text.setText(r.getFile().toURI().toURL().toExternalForm());
}
catch (MalformedURLException e)
{
ErrorHelper.logThrowableAndShowMessage(e);
}
}
else
{
if (browser != null)
browser.setText(String.valueOf(queryResult.getSubject()));
else
text.setText(String.valueOf(queryResult.getSubject()));
}
firePropertyChange(IWorkbenchPart.PROP_TITLE);
}
boolean darkMode()
{
// Get the system colors
Color bgColor = browser.getBackground();
int br = bgColor.getRed();
int bg = bgColor.getGreen();
int bb = bgColor.getBlue();
return br * br + bg * bg + bb * bb < 128 * 128 * 3;
}
@Override
public void contributeToToolBar(IToolBarManager manager)
{
if (queryResult.getQuery() != null && queryResult.getQuery().getHelpUrl() != null)
manager.appendToGroup("help", new OpenHelpPageAction(queryResult.getQuery().getHelpUrl())); //$NON-NLS-1$
super.contributeToToolBar(manager);
}
@Override
public void setFocus()
{
// unregister the old global action handler (handles trees and tables)
// to be able to use Ctrl-C to copy text
site.getActionBars().setGlobalActionHandler(ActionFactory.COPY.getId(), null);
site.getActionBars().updateActionBars();
if (browser != null)
browser.setFocus();
else
text.setFocus();
}
public ISelection getSelection()
{
return selection != null ? selection : StructuredSelection.EMPTY;
}
public void changing(LocationEvent event)
{
QueryObjectLink url = QueryObjectLink.parse(event.location);
if (url == null)
return;
switch (url.getType())
{
case OBJECT:
onObjectLinkEvent(event, url);
break;
case QUERY:
onQueryLinkEvent(event, url);
break;
case DETAIL_RESULT:
break;
}
}
private void onObjectLinkEvent(LocationEvent event, QueryObjectLink url)
{
try
{
final int objectId = getEditor().getQueryContext().mapToObjectId(url.getTarget());
if (objectId < 0)
return;
this.selection = new StructuredSelection(new IContextObject()
{
public int getObjectId()
{
return objectId;
}
});
for (ISelectionChangedListener l : new ArrayList<ISelectionChangedListener>(listeners))
l.selectionChanged(new SelectionChangedEvent(QueryTextResultPane.this, selection));
PopupMenu m = new PopupMenu();
contextMenu.addContextActions(m, selection, null);
if (menu != null && !menu.isDisposed())
menu.dispose();
menu = m.createMenu(getEditorSite().getActionBars().getStatusLineManager(), browser);
menu.setVisible(true);
}
catch (Exception e)
{
ErrorHelper.logThrowableAndShowMessage(e, MessageUtil.format(
Messages.QueryTextResultPane_UnableToMapAddress, url.getTarget()));
}
event.doit = false;
}
private void onQueryLinkEvent(LocationEvent event, QueryObjectLink url)
{
try
{
ArgumentSet set = CommandLine.parse(getQueryContext(), url.getTarget());
QueryExecution.execute(getEditor(), this.getPaneState(), null, set, false, true);
}
catch (SnapshotException e)
{
ErrorHelper.logThrowableAndShowMessage(e);
}
event.doit = false;
}
public void changed(LocationEvent event)
{}
public String getTitle()
{
return queryResult != null ? queryResult.getTitle() : Messages.QueryTextResultPane_Text;
}
@Override
public Image getTitleImage()
{
Image image = queryResult != null ? MemoryAnalyserPlugin.getDefault().getImage(queryResult.getQuery()) : null;
return image != null ? image : MemoryAnalyserPlugin.getImage(MemoryAnalyserPlugin.ISharedImages.QUERY);
}
@Override
public String getTitleToolTip()
{
return queryResult != null ? queryResult.getTitleToolTip() : null;
}
public void addSelectionChangedListener(ISelectionChangedListener listener)
{
listeners.add(listener);
}
public void removeSelectionChangedListener(ISelectionChangedListener listener)
{
listeners.remove(listener);
}
public void setSelection(ISelection selection)
{
throw new UnsupportedOperationException();
}
public <T> T getAdapter(Class<T> adapter)
{
if (adapter.isAssignableFrom(queryResult.getClass()))
{
return (adapter.cast(queryResult));
}
if (adapter.isAssignableFrom(queryResult.getSubject().getClass()))
{
return (adapter.cast(queryResult.getSubject()));
}
return super.getAdapter(adapter);
}
@Override
public void dispose()
{
super.dispose();
if (menu != null && !menu.isDisposed())
menu.dispose();
}
}