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/*******************************************************************************
* Copyright (c) 2006 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:
* IBM Corporation - Jeff Briggs, Henry Hughes, Ryan Morse
*******************************************************************************/
package org.eclipse.linuxtools.systemtap.ui.ide.views;
import java.io.File;
import org.eclipse.core.runtime.Preferences.IPropertyChangeListener;
import org.eclipse.core.runtime.Preferences.PropertyChangeEvent;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.linuxtools.systemtap.ui.ide.actions.hidden.KernelSourceAction;
import org.eclipse.linuxtools.systemtap.ui.ide.internal.IDEPlugin;
import org.eclipse.linuxtools.systemtap.ui.ide.internal.Localization;
import org.eclipse.linuxtools.systemtap.ui.ide.preferences.IDEPreferenceConstants;
import org.eclipse.linuxtools.systemtap.ui.logging.LogManager;
import org.eclipse.linuxtools.systemtap.ui.structures.KernelSourceTree;
import org.eclipse.linuxtools.systemtap.ui.structures.TreeNode;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.DirectoryDialog;
import org.eclipse.ui.PlatformUI;
/**
* The Kernel Source Browser module for the SystemTap GUI. This browser provides a list of kernel source
* files and allows the user to open those files in an editor in order to place probes in arbitary locations.
* @author Henry Hughes
* @author Ryan Morse
*/
public class KernelBrowserView extends BrowserView {
public KernelBrowserView() {
super();
LogManager.logInfo("Initializing", this);
}
/**
* Creates the UI on the given <code>Composite</code>
*/
public void createPartControl(Composite parent) {
LogManager.logDebug("Start createPartControl: parent-" + parent, this);
super.createPartControl(parent);
refresh();
makeActions();
LogManager.logDebug("End createPartControl", this);
}
/**
* Wires up all of the actions for this browser, such as double and right click handlers.
*/
public void makeActions() {
LogManager.logDebug("Start makeActions:", this);
doubleClickAction = new KernelSourceAction(getSite().getWorkbenchWindow(), this);
dblClickListener = new IDoubleClickListener() {
public void doubleClick(DoubleClickEvent event) {
LogManager.logDebug("Start doubleClick: event-" + event, this);
doubleClickAction.run();
LogManager.logDebug("End doubleClick:", this);
}
};
viewer.addDoubleClickListener(dblClickListener);
IDEPlugin.getDefault().getPluginPreferences().addPropertyChangeListener(propertyChangeListener);
LogManager.logDebug("End makeActions:", this);
}
/**
* Updates the kernel source displayed to the user with the new kernel source tree. Usually
* a response to the user changing the preferences related to the kernel source location, requiring
* that the application update the kernel source information.
*/
public void refresh() {
LogManager.logDebug("Start refresh:", this);
KernelSourceTree kst = new KernelSourceTree();
IPreferenceStore p = IDEPlugin.getDefault().getPreferenceStore();
String kernelSource = p.getString(IDEPreferenceConstants.P_KERNEL_SOURCE);
if(null == kernelSource || kernelSource.length() < 1) {
LogManager.logInfo("Kernel Source Directory not found, querying", this);
DirectoryDialog dialog= new DirectoryDialog(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(), SWT.OPEN);
dialog.setText(Localization.getString("KernelBrowserView.WhereKernelSource"));
kernelSource = dialog.open();
if(null == kernelSource)
kernelSource = "";
p.setValue(IDEPreferenceConstants.P_KERNEL_SOURCE, kernelSource);
}
String[] excluded = p.getString(IDEPreferenceConstants.P_EXCLUDED_KERNEL_SOURCE).split(File.pathSeparator);
kst.buildKernelTree(kernelSource, excluded);
if(null != kst)
super.viewer.setInput(kst.getTree());
else
super.viewer.setInput(new TreeNode("", false));
kst.dispose();
LogManager.logDebug("End refresh:", this);
}
/**
* A <code>IPropertyChangeListener</code> that detects changes to the Kernel Source location
* and runs the <code>updateKernelSourceTree</code> method.
*/
private final IPropertyChangeListener propertyChangeListener = new IPropertyChangeListener() {
public void propertyChange(PropertyChangeEvent event) {
LogManager.logDebug("Start propertyChange: event-" + event, this);
if(event.getProperty().equals(IDEPreferenceConstants.P_KERNEL_SOURCE)) {
refresh();
}
LogManager.logDebug("End propertyChange:", this);
}
};
public void dispose() {
LogManager.logInfo("Disposing", this);
super.dispose();
IDEPlugin.getDefault().getPluginPreferences().removePropertyChangeListener(propertyChangeListener);
if(null != viewer)
viewer.removeDoubleClickListener(dblClickListener);
dblClickListener = null;
if(null != doubleClickAction)
doubleClickAction.dispose();
doubleClickAction = null;
}
public static final String ID = "org.eclipse.linuxtools.systemtap.ui.ide.views.KernelBrowserView";
private KernelSourceAction doubleClickAction;
private IDoubleClickListener dblClickListener;
}
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